From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- sound/core/oss/Makefile | 12 + sound/core/oss/copy.c | 87 ++ sound/core/oss/io.c | 134 +++ sound/core/oss/linear.c | 158 +++ sound/core/oss/mixer_oss.c | 1340 +++++++++++++++++++++++ sound/core/oss/mulaw.c | 308 ++++++ sound/core/oss/pcm_oss.c | 2530 +++++++++++++++++++++++++++++++++++++++++++ sound/core/oss/pcm_plugin.c | 921 ++++++++++++++++ sound/core/oss/pcm_plugin.h | 250 +++++ sound/core/oss/plugin_ops.h | 536 +++++++++ sound/core/oss/rate.c | 378 +++++++ sound/core/oss/route.c | 519 +++++++++ 12 files changed, 7173 insertions(+) create mode 100644 sound/core/oss/Makefile create mode 100644 sound/core/oss/copy.c create mode 100644 sound/core/oss/io.c create mode 100644 sound/core/oss/linear.c create mode 100644 sound/core/oss/mixer_oss.c create mode 100644 sound/core/oss/mulaw.c create mode 100644 sound/core/oss/pcm_oss.c create mode 100644 sound/core/oss/pcm_plugin.c create mode 100644 sound/core/oss/pcm_plugin.h create mode 100644 sound/core/oss/plugin_ops.h create mode 100644 sound/core/oss/rate.c create mode 100644 sound/core/oss/route.c (limited to 'sound/core/oss') diff --git a/sound/core/oss/Makefile b/sound/core/oss/Makefile new file mode 100644 index 000000000000..e6d5a045ba27 --- /dev/null +++ b/sound/core/oss/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for ALSA +# Copyright (c) 1999 by Jaroslav Kysela +# + +snd-mixer-oss-objs := mixer_oss.o + +snd-pcm-oss-objs := pcm_oss.o pcm_plugin.o \ + io.o copy.o linear.o mulaw.o route.o rate.o + +obj-$(CONFIG_SND_MIXER_OSS) += snd-mixer-oss.o +obj-$(CONFIG_SND_PCM_OSS) += snd-pcm-oss.o diff --git a/sound/core/oss/copy.c b/sound/core/oss/copy.c new file mode 100644 index 000000000000..edecbe7417bd --- /dev/null +++ b/sound/core/oss/copy.c @@ -0,0 +1,87 @@ +/* + * Linear conversion Plug-In + * Copyright (c) 2000 by Abramo Bagnara + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include "pcm_plugin.h" + +static snd_pcm_sframes_t copy_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + unsigned int channel; + unsigned int nchannels; + + snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO); + if (frames == 0) + return 0; + nchannels = plugin->src_format.channels; + for (channel = 0; channel < nchannels; channel++) { + snd_assert(src_channels->area.first % 8 == 0 && + src_channels->area.step % 8 == 0, + return -ENXIO); + snd_assert(dst_channels->area.first % 8 == 0 && + dst_channels->area.step % 8 == 0, + return -ENXIO); + if (!src_channels->enabled) { + if (dst_channels->wanted) + snd_pcm_area_silence(&dst_channels->area, 0, frames, plugin->dst_format.format); + dst_channels->enabled = 0; + continue; + } + dst_channels->enabled = 1; + snd_pcm_area_copy(&src_channels->area, 0, &dst_channels->area, 0, frames, plugin->src_format.format); + src_channels++; + dst_channels++; + } + return frames; +} + +int snd_pcm_plugin_build_copy(snd_pcm_plug_t *plug, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin) +{ + int err; + snd_pcm_plugin_t *plugin; + int width; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + + snd_assert(src_format->format == dst_format->format, return -ENXIO); + snd_assert(src_format->rate == dst_format->rate, return -ENXIO); + snd_assert(src_format->channels == dst_format->channels, return -ENXIO); + + width = snd_pcm_format_physical_width(src_format->format); + snd_assert(width > 0, return -ENXIO); + + err = snd_pcm_plugin_build(plug, "copy", src_format, dst_format, + 0, &plugin); + if (err < 0) + return err; + plugin->transfer = copy_transfer; + *r_plugin = plugin; + return 0; +} diff --git a/sound/core/oss/io.c b/sound/core/oss/io.c new file mode 100644 index 000000000000..bb1c99a5b734 --- /dev/null +++ b/sound/core/oss/io.c @@ -0,0 +1,134 @@ +/* + * PCM I/O Plug-In Interface + * Copyright (c) 1999 by Jaroslav Kysela + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include "pcm_plugin.h" + +#define pcm_write(plug,buf,count) snd_pcm_oss_write3(plug,buf,count,1) +#define pcm_writev(plug,vec,count) snd_pcm_oss_writev3(plug,vec,count,1) +#define pcm_read(plug,buf,count) snd_pcm_oss_read3(plug,buf,count,1) +#define pcm_readv(plug,vec,count) snd_pcm_oss_readv3(plug,vec,count,1) + +/* + * Basic io plugin + */ + +static snd_pcm_sframes_t io_playback_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels ATTRIBUTE_UNUSED, + snd_pcm_uframes_t frames) +{ + snd_assert(plugin != NULL, return -ENXIO); + snd_assert(src_channels != NULL, return -ENXIO); + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + return pcm_write(plugin->plug, src_channels->area.addr, frames); + } else { + int channel, channels = plugin->dst_format.channels; + void **bufs = (void**)plugin->extra_data; + snd_assert(bufs != NULL, return -ENXIO); + for (channel = 0; channel < channels; channel++) { + if (src_channels[channel].enabled) + bufs[channel] = src_channels[channel].area.addr; + else + bufs[channel] = NULL; + } + return pcm_writev(plugin->plug, bufs, frames); + } +} + +static snd_pcm_sframes_t io_capture_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels ATTRIBUTE_UNUSED, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + snd_assert(plugin != NULL, return -ENXIO); + snd_assert(dst_channels != NULL, return -ENXIO); + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + return pcm_read(plugin->plug, dst_channels->area.addr, frames); + } else { + int channel, channels = plugin->dst_format.channels; + void **bufs = (void**)plugin->extra_data; + snd_assert(bufs != NULL, return -ENXIO); + for (channel = 0; channel < channels; channel++) { + if (dst_channels[channel].enabled) + bufs[channel] = dst_channels[channel].area.addr; + else + bufs[channel] = NULL; + } + return pcm_readv(plugin->plug, bufs, frames); + } + return 0; +} + +static snd_pcm_sframes_t io_src_channels(snd_pcm_plugin_t *plugin, + snd_pcm_uframes_t frames, + snd_pcm_plugin_channel_t **channels) +{ + int err; + unsigned int channel; + snd_pcm_plugin_channel_t *v; + err = snd_pcm_plugin_client_channels(plugin, frames, &v); + if (err < 0) + return err; + *channels = v; + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + for (channel = 0; channel < plugin->src_format.channels; ++channel, ++v) + v->wanted = 1; + } + return frames; +} + +int snd_pcm_plugin_build_io(snd_pcm_plug_t *plug, + snd_pcm_hw_params_t *params, + snd_pcm_plugin_t **r_plugin) +{ + int err; + snd_pcm_plugin_format_t format; + snd_pcm_plugin_t *plugin; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + snd_assert(plug != NULL && params != NULL, return -ENXIO); + format.format = params_format(params); + format.rate = params_rate(params); + format.channels = params_channels(params); + err = snd_pcm_plugin_build(plug, "I/O io", + &format, &format, + sizeof(void *) * format.channels, + &plugin); + if (err < 0) + return err; + plugin->access = params_access(params); + if (snd_pcm_plug_stream(plug) == SNDRV_PCM_STREAM_PLAYBACK) { + plugin->transfer = io_playback_transfer; + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) + plugin->client_channels = io_src_channels; + } else { + plugin->transfer = io_capture_transfer; + } + + *r_plugin = plugin; + return 0; +} diff --git a/sound/core/oss/linear.c b/sound/core/oss/linear.c new file mode 100644 index 000000000000..12ed27a57b27 --- /dev/null +++ b/sound/core/oss/linear.c @@ -0,0 +1,158 @@ +/* + * Linear conversion Plug-In + * Copyright (c) 1999 by Jaroslav Kysela , + * Abramo Bagnara + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include "pcm_plugin.h" + +/* + * Basic linear conversion plugin + */ + +typedef struct linear_private_data { + int conv; +} linear_t; + +static void convert(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ +#define CONV_LABELS +#include "plugin_ops.h" +#undef CONV_LABELS + linear_t *data = (linear_t *)plugin->extra_data; + void *conv = conv_labels[data->conv]; + int channel; + int nchannels = plugin->src_format.channels; + for (channel = 0; channel < nchannels; ++channel) { + char *src; + char *dst; + int src_step, dst_step; + snd_pcm_uframes_t frames1; + if (!src_channels[channel].enabled) { + if (dst_channels[channel].wanted) + snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format); + dst_channels[channel].enabled = 0; + continue; + } + dst_channels[channel].enabled = 1; + src = src_channels[channel].area.addr + src_channels[channel].area.first / 8; + dst = dst_channels[channel].area.addr + dst_channels[channel].area.first / 8; + src_step = src_channels[channel].area.step / 8; + dst_step = dst_channels[channel].area.step / 8; + frames1 = frames; + while (frames1-- > 0) { + goto *conv; +#define CONV_END after +#include "plugin_ops.h" +#undef CONV_END + after: + src += src_step; + dst += dst_step; + } + } +} + +static snd_pcm_sframes_t linear_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + linear_t *data; + + snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO); + data = (linear_t *)plugin->extra_data; + if (frames == 0) + return 0; +#ifdef CONFIG_SND_DEBUG + { + unsigned int channel; + for (channel = 0; channel < plugin->src_format.channels; channel++) { + snd_assert(src_channels[channel].area.first % 8 == 0 && + src_channels[channel].area.step % 8 == 0, + return -ENXIO); + snd_assert(dst_channels[channel].area.first % 8 == 0 && + dst_channels[channel].area.step % 8 == 0, + return -ENXIO); + } + } +#endif + convert(plugin, src_channels, dst_channels, frames); + return frames; +} + +int conv_index(int src_format, int dst_format) +{ + int src_endian, dst_endian, sign, src_width, dst_width; + + sign = (snd_pcm_format_signed(src_format) != + snd_pcm_format_signed(dst_format)); +#ifdef SNDRV_LITTLE_ENDIAN + src_endian = snd_pcm_format_big_endian(src_format); + dst_endian = snd_pcm_format_big_endian(dst_format); +#else + src_endian = snd_pcm_format_little_endian(src_format); + dst_endian = snd_pcm_format_little_endian(dst_format); +#endif + + if (src_endian < 0) + src_endian = 0; + if (dst_endian < 0) + dst_endian = 0; + + src_width = snd_pcm_format_width(src_format) / 8 - 1; + dst_width = snd_pcm_format_width(dst_format) / 8 - 1; + + return src_width * 32 + src_endian * 16 + sign * 8 + dst_width * 2 + dst_endian; +} + +int snd_pcm_plugin_build_linear(snd_pcm_plug_t *plug, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin) +{ + int err; + struct linear_private_data *data; + snd_pcm_plugin_t *plugin; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + + snd_assert(src_format->rate == dst_format->rate, return -ENXIO); + snd_assert(src_format->channels == dst_format->channels, return -ENXIO); + snd_assert(snd_pcm_format_linear(src_format->format) && + snd_pcm_format_linear(dst_format->format), return -ENXIO); + + err = snd_pcm_plugin_build(plug, "linear format conversion", + src_format, dst_format, + sizeof(linear_t), &plugin); + if (err < 0) + return err; + data = (linear_t *)plugin->extra_data; + data->conv = conv_index(src_format->format, dst_format->format); + plugin->transfer = linear_transfer; + *r_plugin = plugin; + return 0; +} diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c new file mode 100644 index 000000000000..98ed9a9f0da6 --- /dev/null +++ b/sound/core/oss/mixer_oss.c @@ -0,0 +1,1340 @@ +/* + * OSS emulation layer for the mixer interface + * Copyright (c) by Jaroslav Kysela + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define OSS_ALSAEMULVER _SIOR ('M', 249, int) + +MODULE_AUTHOR("Jaroslav Kysela "); +MODULE_DESCRIPTION("Mixer OSS emulation for ALSA."); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER); + +static int snd_mixer_oss_open(struct inode *inode, struct file *file) +{ + int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode)); + snd_card_t *card; + snd_mixer_oss_file_t *fmixer; + int err; + + if ((card = snd_cards[cardnum]) == NULL) + return -ENODEV; + if (card->mixer_oss == NULL) + return -ENODEV; + err = snd_card_file_add(card, file); + if (err < 0) + return err; + fmixer = kcalloc(1, sizeof(*fmixer), GFP_KERNEL); + if (fmixer == NULL) { + snd_card_file_remove(card, file); + return -ENOMEM; + } + fmixer->card = card; + fmixer->mixer = card->mixer_oss; + file->private_data = fmixer; + if (!try_module_get(card->module)) { + kfree(fmixer); + snd_card_file_remove(card, file); + return -EFAULT; + } + return 0; +} + +static int snd_mixer_oss_release(struct inode *inode, struct file *file) +{ + snd_mixer_oss_file_t *fmixer; + + if (file->private_data) { + fmixer = (snd_mixer_oss_file_t *) file->private_data; + module_put(fmixer->card->module); + snd_card_file_remove(fmixer->card, file); + kfree(fmixer); + } + return 0; +} + +static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer, + mixer_info __user *_info) +{ + snd_card_t *card = fmixer->card; + snd_mixer_oss_t *mixer = fmixer->mixer; + struct mixer_info info; + + memset(&info, 0, sizeof(info)); + strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); + strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); + info.modify_counter = card->mixer_oss_change_count; + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer, + _old_mixer_info __user *_info) +{ + snd_card_t *card = fmixer->card; + snd_mixer_oss_t *mixer = fmixer->mixer; + _old_mixer_info info; + + memset(&info, 0, sizeof(info)); + strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); + strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + int result = 0; + + if (mixer == NULL) + return -EIO; + if (mixer->get_recsrc && mixer->put_recsrc) + result |= SOUND_CAP_EXCL_INPUT; + return result; +} + +static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_mixer_oss_slot_t *pslot; + int result = 0, chn; + + if (mixer == NULL) + return -EIO; + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_volume || pslot->put_recsrc) + result |= 1 << chn; + } + return result; +} + +static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_mixer_oss_slot_t *pslot; + int result = 0, chn; + + if (mixer == NULL) + return -EIO; + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_volume && pslot->stereo) + result |= 1 << chn; + } + return result; +} + +static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + int result = 0; + + if (mixer == NULL) + return -EIO; + if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ + result = mixer->mask_recsrc; + } else { + snd_mixer_oss_slot_t *pslot; + int chn; + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_recsrc) + result |= 1 << chn; + } + } + return result; +} + +static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + int result = 0; + + if (mixer == NULL) + return -EIO; + if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ + int err; + if ((err = mixer->get_recsrc(fmixer, &result)) < 0) + return err; + result = 1 << result; + } else { + snd_mixer_oss_slot_t *pslot; + int chn; + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->get_recsrc) { + int active = 0; + pslot->get_recsrc(fmixer, pslot, &active); + if (active) + result |= 1 << chn; + } + } + } + return mixer->oss_recsrc = result; +} + +static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_mixer_oss_slot_t *pslot; + int chn, active; + int result = 0; + + if (mixer == NULL) + return -EIO; + if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */ + if (recsrc & ~mixer->oss_recsrc) + recsrc &= ~mixer->oss_recsrc; + mixer->put_recsrc(fmixer, ffz(~recsrc)); + mixer->get_recsrc(fmixer, &result); + result = 1 << result; + } + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_recsrc) { + active = (recsrc & (1 << chn)) ? 1 : 0; + pslot->put_recsrc(fmixer, pslot, active); + } + } + if (! result) { + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->get_recsrc) { + active = 0; + pslot->get_recsrc(fmixer, pslot, &active); + if (active) + result |= 1 << chn; + } + } + } + return result; +} + +static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_mixer_oss_slot_t *pslot; + int result = 0, left, right; + + if (mixer == NULL || slot > 30) + return -EIO; + pslot = &mixer->slots[slot]; + left = pslot->volume[0]; + right = pslot->volume[1]; + if (pslot->get_volume) + result = pslot->get_volume(fmixer, pslot, &left, &right); + if (!pslot->stereo) + right = left; + snd_assert(left >= 0 && left <= 100, return -EIO); + snd_assert(right >= 0 && right <= 100, return -EIO); + if (result >= 0) { + pslot->volume[0] = left; + pslot->volume[1] = right; + result = (left & 0xff) | ((right & 0xff) << 8); + } + return result; +} + +static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer, + int slot, int volume) +{ + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_mixer_oss_slot_t *pslot; + int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; + + if (mixer == NULL || slot > 30) + return -EIO; + pslot = &mixer->slots[slot]; + if (left > 100) + left = 100; + if (right > 100) + right = 100; + if (!pslot->stereo) + right = left; + if (pslot->put_volume) + result = pslot->put_volume(fmixer, pslot, left, right); + if (result < 0) + return result; + pslot->volume[0] = left; + pslot->volume[1] = right; + return (left & 0xff) | ((right & 0xff) << 8); +} + +static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + int __user *p = argp; + int tmp; + + snd_assert(fmixer != NULL, return -ENXIO); + if (((cmd >> 8) & 0xff) == 'M') { + switch (cmd) { + case SOUND_MIXER_INFO: + return snd_mixer_oss_info(fmixer, argp); + case SOUND_OLD_MIXER_INFO: + return snd_mixer_oss_info_obsolete(fmixer, argp); + case SOUND_MIXER_WRITE_RECSRC: + if (get_user(tmp, p)) + return -EFAULT; + tmp = snd_mixer_oss_set_recsrc(fmixer, tmp); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + case OSS_GETVERSION: + return put_user(SNDRV_OSS_VERSION, p); + case OSS_ALSAEMULVER: + return put_user(1, p); + case SOUND_MIXER_READ_DEVMASK: + tmp = snd_mixer_oss_devmask(fmixer); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + case SOUND_MIXER_READ_STEREODEVS: + tmp = snd_mixer_oss_stereodevs(fmixer); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + case SOUND_MIXER_READ_RECMASK: + tmp = snd_mixer_oss_recmask(fmixer); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + case SOUND_MIXER_READ_CAPS: + tmp = snd_mixer_oss_caps(fmixer); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + case SOUND_MIXER_READ_RECSRC: + tmp = snd_mixer_oss_get_recsrc(fmixer); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + } + } + if (cmd & SIOC_IN) { + if (get_user(tmp, p)) + return -EFAULT; + tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + } else if (cmd & SIOC_OUT) { + tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff); + if (tmp < 0) + return tmp; + return put_user(tmp, p); + } + return -ENXIO; +} + +static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + return snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg); +} + +int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg) +{ + snd_mixer_oss_file_t fmixer; + + snd_assert(card != NULL, return -ENXIO); + if (card->mixer_oss == NULL) + return -ENXIO; + memset(&fmixer, 0, sizeof(fmixer)); + fmixer.card = card; + fmixer.mixer = card->mixer_oss; + return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); +} + +#ifdef CONFIG_COMPAT +/* all compatible */ +#define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl +#else +#define snd_mixer_oss_ioctl_compat NULL +#endif + +/* + * REGISTRATION PART + */ + +static struct file_operations snd_mixer_oss_f_ops = +{ + .owner = THIS_MODULE, + .open = snd_mixer_oss_open, + .release = snd_mixer_oss_release, + .unlocked_ioctl = snd_mixer_oss_ioctl, + .compat_ioctl = snd_mixer_oss_ioctl_compat, +}; + +static snd_minor_t snd_mixer_oss_reg = +{ + .comment = "mixer", + .f_ops = &snd_mixer_oss_f_ops, +}; + +/* + * utilities + */ + +static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) +{ + long orange = omax - omin, nrange = nmax - nmin; + + if (orange == 0) + return 0; + return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin; +} + +/* convert from alsa native to oss values (0-100) */ +static long snd_mixer_oss_conv1(long val, long min, long max, int *old) +{ + if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) + return *old; + return snd_mixer_oss_conv(val, min, max, 0, 100); +} + +/* convert from oss to alsa native values */ +static long snd_mixer_oss_conv2(long val, long min, long max) +{ + return snd_mixer_oss_conv(val, 0, 100, min, max); +} + +#if 0 +static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot) +{ + snd_mixer_oss_t *mixer = card->mixer_oss; + if (mixer) + mixer->mask_recsrc |= 1 << slot; +} + +static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot) +{ + snd_mixer_oss_t *mixer = card->mixer_oss; + if (mixer && (mixer->mask_recsrc & (1 << slot))) + return 1; + return 0; +} +#endif + +#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 + +#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 +#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 +#define SNDRV_MIXER_OSS_ITEM_GROUTE 2 +#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 +#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 +#define SNDRV_MIXER_OSS_ITEM_PROUTE 5 +#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 +#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 +#define SNDRV_MIXER_OSS_ITEM_CROUTE 8 +#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 +#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 + +#define SNDRV_MIXER_OSS_ITEM_COUNT 11 + +#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) +#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) +#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) +#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) +#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) +#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) +#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) +#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) +#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) +#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) +#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) + +struct slot { + unsigned int signature; + unsigned int present; + unsigned int channels; + unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; + unsigned int capture_item; + struct snd_mixer_oss_assign_table *assigned; + unsigned int allocated: 1; +}; + +#define ID_UNKNOWN ((unsigned int)-1) + +static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index) +{ + snd_card_t * card = mixer->card; + snd_ctl_elem_id_t id; + + memset(&id, 0, sizeof(id)); + id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + strcpy(id.name, name); + id.index = index; + return snd_ctl_find_id(card, &id); +} + +static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + unsigned int numid, + int *left, int *right) +{ + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + snd_kcontrol_t *kctl; + snd_card_t *card = fmixer->card; + + if (numid == ID_UNKNOWN) + return; + down_read(&card->controls_rwsem); + if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { + up_read(&card->controls_rwsem); + return; + } + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) + goto __unalloc; + snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); + snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc); + snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc); + *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); + if (uinfo->count > 1) + *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); + __unalloc: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); +} + +static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + unsigned int numid, + int *left, int *right, + int route) +{ + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + snd_kcontrol_t *kctl; + snd_card_t *card = fmixer->card; + + if (numid == ID_UNKNOWN) + return; + down_read(&card->controls_rwsem); + if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { + up_read(&card->controls_rwsem); + return; + } + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) + goto __unalloc; + snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); + snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc); + if (!uctl->value.integer.value[0]) { + *left = 0; + if (uinfo->count == 1) + *right = 0; + } + if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) + *right = 0; + __unalloc: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); +} + +static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int *left, int *right) +{ + struct slot *slot = (struct slot *)pslot->private_data; + + *left = *right = 100; + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { + snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { + snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { + snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); + } + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); + } + return 0; +} + +static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + unsigned int numid, + int left, int right) +{ + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + snd_kcontrol_t *kctl; + snd_card_t *card = fmixer->card; + int res; + + if (numid == ID_UNKNOWN) + return; + down_read(&card->controls_rwsem); + if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) + return; + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) + goto __unalloc; + snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); + snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc); + uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); + if (uinfo->count > 1) + uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); + snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc); + if (res > 0) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); + __unalloc: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); +} + +static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + unsigned int numid, + int left, int right, + int route) +{ + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + snd_kcontrol_t *kctl; + snd_card_t *card = fmixer->card; + int res; + + if (numid == ID_UNKNOWN) + return; + down_read(&card->controls_rwsem); + if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { + up_read(&fmixer->card->controls_rwsem); + return; + } + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) + goto __unalloc; + snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); + if (uinfo->count > 1) { + uctl->value.integer.value[0] = left > 0 ? 1 : 0; + uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; + if (route) { + uctl->value.integer.value[1] = + uctl->value.integer.value[2] = 0; + } + } else { + uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; + } + snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc); + if (res > 0) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); + __unalloc: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); +} + +static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int left, int right) +{ + struct slot *slot = (struct slot *)pslot->private_data; + + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { + snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); + if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) + snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { + snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { + snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); + } + if (left || right) { + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); + if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); + if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); + } else { + if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); + } + } + return 0; +} + +static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int *active) +{ + struct slot *slot = (struct slot *)pslot->private_data; + int left, right; + + left = right = 1; + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); + *active = (left || right) ? 1 : 0; + return 0; +} + +static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int *active) +{ + struct slot *slot = (struct slot *)pslot->private_data; + int left, right; + + left = right = 1; + snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); + *active = (left || right) ? 1 : 0; + return 0; +} + +static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int active) +{ + struct slot *slot = (struct slot *)pslot->private_data; + + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); + return 0; +} + +static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer, + snd_mixer_oss_slot_t *pslot, + int active) +{ + struct slot *slot = (struct slot *)pslot->private_data; + + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); + return 0; +} + +static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index) +{ + snd_card_t *card = fmixer->card; + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_kcontrol_t *kctl; + snd_mixer_oss_slot_t *pslot; + struct slot *slot; + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + int err, idx; + + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) { + err = -ENOMEM; + goto __unlock; + } + down_read(&card->controls_rwsem); + kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); + snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock); + snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock); + snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock); + for (idx = 0; idx < 32; idx++) { + if (!(mixer->mask_recsrc & (1 << idx))) + continue; + pslot = &mixer->slots[idx]; + slot = (struct slot *)pslot->private_data; + if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) + continue; + if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) + continue; + if (slot->capture_item == uctl->value.enumerated.item[0]) { + *active_index = idx; + break; + } + } + err = 0; + __unlock: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); + return err; +} + +static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index) +{ + snd_card_t *card = fmixer->card; + snd_mixer_oss_t *mixer = fmixer->mixer; + snd_kcontrol_t *kctl; + snd_mixer_oss_slot_t *pslot; + struct slot *slot = NULL; + snd_ctl_elem_info_t *uinfo; + snd_ctl_elem_value_t *uctl; + int err; + unsigned int idx; + + uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); + uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); + if (uinfo == NULL || uctl == NULL) { + err = -ENOMEM; + goto __unlock; + } + down_read(&card->controls_rwsem); + kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); + snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock); + snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock); + for (idx = 0; idx < 32; idx++) { + if (!(mixer->mask_recsrc & (1 << idx))) + continue; + pslot = &mixer->slots[idx]; + slot = (struct slot *)pslot->private_data; + if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) + continue; + if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) + continue; + if (idx == active_index) + break; + slot = NULL; + } + snd_runtime_check(slot != NULL, goto __unlock); + for (idx = 0; idx < uinfo->count; idx++) + uctl->value.enumerated.item[idx] = slot->capture_item; + snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, ); + if (err > 0) + snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); + err = 0; + __unlock: + up_read(&card->controls_rwsem); + kfree(uctl); + kfree(uinfo); + return err; +} + +struct snd_mixer_oss_assign_table { + int oss_id; + const char *name; + int index; +}; + +static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item) +{ + snd_ctl_elem_info_t *info; + snd_kcontrol_t *kcontrol; + snd_card_t *card = mixer->card; + int err; + + down_read(&card->controls_rwsem); + kcontrol = snd_mixer_oss_test_id(mixer, name, index); + if (kcontrol == NULL) { + up_read(&card->controls_rwsem); + return 0; + } + info = kmalloc(sizeof(*info), GFP_KERNEL); + if (! info) { + up_read(&card->controls_rwsem); + return -ENOMEM; + } + if ((err = kcontrol->info(kcontrol, info)) < 0) { + up_read(&card->controls_rwsem); + kfree(info); + return err; + } + slot->numid[item] = kcontrol->id.numid; + up_read(&card->controls_rwsem); + if (info->count > slot->channels) + slot->channels = info->count; + slot->present |= 1 << item; + kfree(info); + return 0; +} + +static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn) +{ + struct slot *p = (struct slot *)chn->private_data; + if (p) { + if (p->allocated && p->assigned) { + kfree(p->assigned->name); + kfree(p->assigned); + } + kfree(p); + } +} + +static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot) +{ + int idx = rslot->number; /* remember this */ + if (rslot->private_free) + rslot->private_free(rslot); + memset(rslot, 0, sizeof(*rslot)); + rslot->number = idx; +} + +/* + * build an OSS mixer element. + * ptr_allocated means the entry is dynamically allocated (change via proc file). + * when replace_old = 1, the old entry is replaced with the new one. + */ +static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old) +{ + struct slot slot; + struct slot *pslot; + snd_kcontrol_t *kctl; + snd_mixer_oss_slot_t *rslot; + char str[64]; + + /* check if already assigned */ + if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) + return 0; + + memset(&slot, 0, sizeof(slot)); + memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ + if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index, + SNDRV_MIXER_OSS_ITEM_GLOBAL)) + return 0; + sprintf(str, "%s Switch", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GSWITCH)) + return 0; + sprintf(str, "%s Route", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GROUTE)) + return 0; + sprintf(str, "%s Volume", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GVOLUME)) + return 0; + sprintf(str, "%s Playback Switch", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PSWITCH)) + return 0; + sprintf(str, "%s Playback Route", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PROUTE)) + return 0; + sprintf(str, "%s Playback Volume", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PVOLUME)) + return 0; + sprintf(str, "%s Capture Switch", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CSWITCH)) + return 0; + sprintf(str, "%s Capture Route", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CROUTE)) + return 0; + sprintf(str, "%s Capture Volume", ptr->name); + if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CVOLUME)) + return 0; + down_read(&mixer->card->controls_rwsem); + if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) { + snd_ctl_elem_info_t *uinfo; + + uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL); + if (! uinfo) { + up_read(&mixer->card->controls_rwsem); + return -ENOMEM; + } + + memset(uinfo, 0, sizeof(*uinfo)); + if (kctl->info(kctl, uinfo)) { + up_read(&mixer->card->controls_rwsem); + return 0; + } + strcpy(str, ptr->name); + if (!strcmp(str, "Master")) + strcpy(str, "Mix"); + if (!strcmp(str, "Master Mono")) + strcpy(str, "Mix Mono"); + slot.capture_item = 0; + if (!strcmp(uinfo->value.enumerated.name, str)) { + slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; + } else { + for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { + uinfo->value.enumerated.item = slot.capture_item; + if (kctl->info(kctl, uinfo)) { + up_read(&mixer->card->controls_rwsem); + return 0; + } + if (!strcmp(uinfo->value.enumerated.name, str)) { + slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; + break; + } + } + } + kfree(uinfo); + } + up_read(&mixer->card->controls_rwsem); + if (slot.present != 0) { + pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL); + snd_runtime_check(pslot != NULL, return -ENOMEM); + *pslot = slot; + pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; + pslot->assigned = ptr; + pslot->allocated = ptr_allocated; + rslot = &mixer->slots[ptr->oss_id]; + mixer_slot_clear(rslot); + rslot->stereo = slot.channels > 1 ? 1 : 0; + rslot->get_volume = snd_mixer_oss_get_volume1; + rslot->put_volume = snd_mixer_oss_put_volume1; + /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ + if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { + rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; + rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; + } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { + rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; + rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; + } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { + mixer->mask_recsrc |= 1 << ptr->oss_id; + } + rslot->private_data = pslot; + rslot->private_free = snd_mixer_oss_slot_free; + return 1; + } + return 0; +} + +/* + */ +#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name +static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { + MIXER_VOL(VOLUME), + MIXER_VOL(BASS), + MIXER_VOL(TREBLE), + MIXER_VOL(SYNTH), + MIXER_VOL(PCM), + MIXER_VOL(SPEAKER), + MIXER_VOL(LINE), + MIXER_VOL(MIC), + MIXER_VOL(CD), + MIXER_VOL(IMIX), + MIXER_VOL(ALTPCM), + MIXER_VOL(RECLEV), + MIXER_VOL(IGAIN), + MIXER_VOL(OGAIN), + MIXER_VOL(LINE1), + MIXER_VOL(LINE2), + MIXER_VOL(LINE3), + MIXER_VOL(DIGITAL1), + MIXER_VOL(DIGITAL2), + MIXER_VOL(DIGITAL3), + MIXER_VOL(PHONEIN), + MIXER_VOL(PHONEOUT), + MIXER_VOL(VIDEO), + MIXER_VOL(RADIO), + MIXER_VOL(MONITOR), +}; + +/* + * /proc interface + */ + +static void snd_mixer_oss_proc_read(snd_info_entry_t *entry, + snd_info_buffer_t * buffer) +{ + snd_mixer_oss_t *mixer = entry->private_data; + int i; + + down(&mixer->reg_mutex); + for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { + struct slot *p; + + if (! oss_mixer_names[i]) + continue; + p = (struct slot *)mixer->slots[i].private_data; + snd_iprintf(buffer, "%s ", oss_mixer_names[i]); + if (p && p->assigned) + snd_iprintf(buffer, "\"%s\" %d\n", + p->assigned->name, + p->assigned->index); + else + snd_iprintf(buffer, "\"\" 0\n"); + } + up(&mixer->reg_mutex); +} + +static void snd_mixer_oss_proc_write(snd_info_entry_t *entry, + snd_info_buffer_t * buffer) +{ + snd_mixer_oss_t *mixer = entry->private_data; + char line[128], str[32], idxstr[16], *cptr; + int ch, idx; + struct snd_mixer_oss_assign_table *tbl; + struct slot *slot; + + while (!snd_info_get_line(buffer, line, sizeof(line))) { + cptr = snd_info_get_str(str, line, sizeof(str)); + for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) + if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) + break; + if (ch >= SNDRV_OSS_MAX_MIXERS) { + snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str); + continue; + } + cptr = snd_info_get_str(str, cptr, sizeof(str)); + if (! *str) { + /* remove the entry */ + down(&mixer->reg_mutex); + mixer_slot_clear(&mixer->slots[ch]); + up(&mixer->reg_mutex); + continue; + } + snd_info_get_str(idxstr, cptr, sizeof(idxstr)); + idx = simple_strtoul(idxstr, NULL, 10); + if (idx >= 0x4000) { /* too big */ + snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx); + continue; + } + down(&mixer->reg_mutex); + slot = (struct slot *)mixer->slots[ch].private_data; + if (slot && slot->assigned && + slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) + /* not changed */ + goto __unlock; + tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); + if (! tbl) { + snd_printk(KERN_ERR "mixer_oss: no memory\n"); + goto __unlock; + } + tbl->oss_id = ch; + tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL); + if (! tbl->name) { + kfree(tbl); + goto __unlock; + } + tbl->index = idx; + if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { + kfree(tbl->name); + kfree(tbl); + } + __unlock: + up(&mixer->reg_mutex); + } +} + +static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer) +{ + snd_info_entry_t *entry; + + entry = snd_info_create_card_entry(mixer->card, "oss_mixer", + mixer->card->proc_root); + if (! entry) + return; + entry->content = SNDRV_INFO_CONTENT_TEXT; + entry->mode = S_IFREG | S_IRUGO | S_IWUSR; + entry->c.text.read_size = 8192; + entry->c.text.read = snd_mixer_oss_proc_read; + entry->c.text.write_size = 8192; + entry->c.text.write = snd_mixer_oss_proc_write; + entry->private_data = mixer; + if (snd_info_register(entry) < 0) { + snd_info_free_entry(entry); + entry = NULL; + } + mixer->proc_entry = entry; +} + +static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer) +{ + if (mixer->proc_entry) { + snd_info_unregister(mixer->proc_entry); + mixer->proc_entry = NULL; + } +} + +static void snd_mixer_oss_build(snd_mixer_oss_t *mixer) +{ + static struct snd_mixer_oss_assign_table table[] = { + { SOUND_MIXER_VOLUME, "Master", 0 }, + { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ + { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, + { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, + { SOUND_MIXER_SYNTH, "Synth", 0 }, + { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ + { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ + { SOUND_MIXER_PCM, "PCM", 0 }, + { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, + { SOUND_MIXER_LINE, "Line", 0 }, + { SOUND_MIXER_MIC, "Mic", 0 }, + { SOUND_MIXER_CD, "CD", 0 }, + { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, + { SOUND_MIXER_ALTPCM, "PCM", 1 }, + { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ + { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ + { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, + { SOUND_MIXER_IGAIN, "Capture", 0 }, + { SOUND_MIXER_OGAIN, "Playback", 0 }, + { SOUND_MIXER_LINE1, "Aux", 0 }, + { SOUND_MIXER_LINE2, "Aux", 1 }, + { SOUND_MIXER_LINE3, "Aux", 2 }, + { SOUND_MIXER_DIGITAL1, "Digital", 0 }, + { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ + { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ + { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ + { SOUND_MIXER_DIGITAL2, "Digital", 1 }, + { SOUND_MIXER_DIGITAL3, "Digital", 2 }, + { SOUND_MIXER_PHONEIN, "Phone", 0 }, + { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, + { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ + { SOUND_MIXER_VIDEO, "Video", 0 }, + { SOUND_MIXER_RADIO, "Radio", 0 }, + { SOUND_MIXER_MONITOR, "Monitor", 0 } + }; + unsigned int idx; + + for (idx = 0; idx < ARRAY_SIZE(table); idx++) + snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); + if (mixer->mask_recsrc) { + mixer->get_recsrc = snd_mixer_oss_get_recsrc2; + mixer->put_recsrc = snd_mixer_oss_put_recsrc2; + } +} + +/* + * + */ + +static int snd_mixer_oss_free1(void *private) +{ + snd_mixer_oss_t *mixer = private; + snd_card_t * card; + int idx; + + snd_assert(mixer != NULL, return -ENXIO); + card = mixer->card; + snd_assert(mixer == card->mixer_oss, return -ENXIO); + card->mixer_oss = NULL; + for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { + snd_mixer_oss_slot_t *chn = &mixer->slots[idx]; + if (chn->private_free) + chn->private_free(chn); + } + kfree(mixer); + return 0; +} + +static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd) +{ + snd_mixer_oss_t *mixer; + + if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { + char name[128]; + int idx, err; + + mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); + if (mixer == NULL) + return -ENOMEM; + init_MUTEX(&mixer->reg_mutex); + sprintf(name, "mixer%i%i", card->number, 0); + if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, + card, 0, + &snd_mixer_oss_reg, + name)) < 0) { + snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0); + kfree(mixer); + return err; + } + mixer->oss_dev_alloc = 1; + mixer->card = card; + if (*card->mixername) + strlcpy(mixer->name, card->mixername, sizeof(mixer->name)); + else + strlcpy(mixer->name, name, sizeof(mixer->name)); +#ifdef SNDRV_OSS_INFO_DEV_MIXERS + snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, + card->number, + mixer->name); +#endif + for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) + mixer->slots[idx].number = idx; + card->mixer_oss = mixer; + snd_mixer_oss_build(mixer); + snd_mixer_oss_proc_init(mixer); + } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) { + mixer = card->mixer_oss; + if (mixer == NULL || !mixer->oss_dev_alloc) + return 0; + snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); + mixer->oss_dev_alloc = 0; + } else { /* free */ + mixer = card->mixer_oss; + if (mixer == NULL) + return 0; +#ifdef SNDRV_OSS_INFO_DEV_MIXERS + snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); +#endif + if (mixer->oss_dev_alloc) + snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); + snd_mixer_oss_proc_done(mixer); + return snd_mixer_oss_free1(mixer); + } + return 0; +} + +static int __init alsa_mixer_oss_init(void) +{ + int idx; + + snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; + for (idx = 0; idx < SNDRV_CARDS; idx++) { + if (snd_cards[idx]) + snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER); + } + return 0; +} + +static void __exit alsa_mixer_oss_exit(void) +{ + int idx; + + snd_mixer_oss_notify_callback = NULL; + for (idx = 0; idx < SNDRV_CARDS; idx++) { + if (snd_cards[idx]) + snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE); + } +} + +module_init(alsa_mixer_oss_init) +module_exit(alsa_mixer_oss_exit) + +EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); diff --git a/sound/core/oss/mulaw.c b/sound/core/oss/mulaw.c new file mode 100644 index 000000000000..44ec4c66eb19 --- /dev/null +++ b/sound/core/oss/mulaw.c @@ -0,0 +1,308 @@ +/* + * Mu-Law conversion Plug-In Interface + * Copyright (c) 1999 by Jaroslav Kysela + * Uros Bizjak + * + * Based on reference implementation by Sun Microsystems, Inc. + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include "pcm_plugin.h" + +#define SIGN_BIT (0x80) /* Sign bit for a u-law byte. */ +#define QUANT_MASK (0xf) /* Quantization field mask. */ +#define NSEGS (8) /* Number of u-law segments. */ +#define SEG_SHIFT (4) /* Left shift for segment number. */ +#define SEG_MASK (0x70) /* Segment field mask. */ + +static inline int val_seg(int val) +{ + int r = 0; + val >>= 7; + if (val & 0xf0) { + val >>= 4; + r += 4; + } + if (val & 0x0c) { + val >>= 2; + r += 2; + } + if (val & 0x02) + r += 1; + return r; +} + +#define BIAS (0x84) /* Bias for linear code. */ + +/* + * linear2ulaw() - Convert a linear PCM value to u-law + * + * In order to simplify the encoding process, the original linear magnitude + * is biased by adding 33 which shifts the encoding range from (0 - 8158) to + * (33 - 8191). The result can be seen in the following encoding table: + * + * Biased Linear Input Code Compressed Code + * ------------------------ --------------- + * 00000001wxyza 000wxyz + * 0000001wxyzab 001wxyz + * 000001wxyzabc 010wxyz + * 00001wxyzabcd 011wxyz + * 0001wxyzabcde 100wxyz + * 001wxyzabcdef 101wxyz + * 01wxyzabcdefg 110wxyz + * 1wxyzabcdefgh 111wxyz + * + * Each biased linear code has a leading 1 which identifies the segment + * number. The value of the segment number is equal to 7 minus the number + * of leading 0's. The quantization interval is directly available as the + * four bits wxyz. * The trailing bits (a - h) are ignored. + * + * Ordinarily the complement of the resulting code word is used for + * transmission, and so the code word is complemented before it is returned. + * + * For further information see John C. Bellamy's Digital Telephony, 1982, + * John Wiley & Sons, pps 98-111 and 472-476. + */ +static unsigned char linear2ulaw(int pcm_val) /* 2's complement (16-bit range) */ +{ + int mask; + int seg; + unsigned char uval; + + /* Get the sign and the magnitude of the value. */ + if (pcm_val < 0) { + pcm_val = BIAS - pcm_val; + mask = 0x7F; + } else { + pcm_val += BIAS; + mask = 0xFF; + } + if (pcm_val > 0x7FFF) + pcm_val = 0x7FFF; + + /* Convert the scaled magnitude to segment number. */ + seg = val_seg(pcm_val); + + /* + * Combine the sign, segment, quantization bits; + * and complement the code word. + */ + uval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0xF); + return uval ^ mask; +} + +/* + * ulaw2linear() - Convert a u-law value to 16-bit linear PCM + * + * First, a biased linear code is derived from the code word. An unbiased + * output can then be obtained by subtracting 33 from the biased code. + * + * Note that this function expects to be passed the complement of the + * original code word. This is in keeping with ISDN conventions. + */ +static int ulaw2linear(unsigned char u_val) +{ + int t; + + /* Complement to obtain normal u-law value. */ + u_val = ~u_val; + + /* + * Extract and bias the quantization bits. Then + * shift up by the segment number and subtract out the bias. + */ + t = ((u_val & QUANT_MASK) << 3) + BIAS; + t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT; + + return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS)); +} + +/* + * Basic Mu-Law plugin + */ + +typedef void (*mulaw_f)(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames); + +typedef struct mulaw_private_data { + mulaw_f func; + int conv; +} mulaw_t; + +static void mulaw_decode(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ +#define PUT_S16_LABELS +#include "plugin_ops.h" +#undef PUT_S16_LABELS + mulaw_t *data = (mulaw_t *)plugin->extra_data; + void *put = put_s16_labels[data->conv]; + int channel; + int nchannels = plugin->src_format.channels; + for (channel = 0; channel < nchannels; ++channel) { + char *src; + char *dst; + int src_step, dst_step; + snd_pcm_uframes_t frames1; + if (!src_channels[channel].enabled) { + if (dst_channels[channel].wanted) + snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format); + dst_channels[channel].enabled = 0; + continue; + } + dst_channels[channel].enabled = 1; + src = src_channels[channel].area.addr + src_channels[channel].area.first / 8; + dst = dst_channels[channel].area.addr + dst_channels[channel].area.first / 8; + src_step = src_channels[channel].area.step / 8; + dst_step = dst_channels[channel].area.step / 8; + frames1 = frames; + while (frames1-- > 0) { + signed short sample = ulaw2linear(*src); + goto *put; +#define PUT_S16_END after +#include "plugin_ops.h" +#undef PUT_S16_END + after: + src += src_step; + dst += dst_step; + } + } +} + +static void mulaw_encode(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ +#define GET_S16_LABELS +#include "plugin_ops.h" +#undef GET_S16_LABELS + mulaw_t *data = (mulaw_t *)plugin->extra_data; + void *get = get_s16_labels[data->conv]; + int channel; + int nchannels = plugin->src_format.channels; + signed short sample = 0; + for (channel = 0; channel < nchannels; ++channel) { + char *src; + char *dst; + int src_step, dst_step; + snd_pcm_uframes_t frames1; + if (!src_channels[channel].enabled) { + if (dst_channels[channel].wanted) + snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format); + dst_channels[channel].enabled = 0; + continue; + } + dst_channels[channel].enabled = 1; + src = src_channels[channel].area.addr + src_channels[channel].area.first / 8; + dst = dst_channels[channel].area.addr + dst_channels[channel].area.first / 8; + src_step = src_channels[channel].area.step / 8; + dst_step = dst_channels[channel].area.step / 8; + frames1 = frames; + while (frames1-- > 0) { + goto *get; +#define GET_S16_END after +#include "plugin_ops.h" +#undef GET_S16_END + after: + *dst = linear2ulaw(sample); + src += src_step; + dst += dst_step; + } + } +} + +static snd_pcm_sframes_t mulaw_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + mulaw_t *data; + + snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO); + if (frames == 0) + return 0; +#ifdef CONFIG_SND_DEBUG + { + unsigned int channel; + for (channel = 0; channel < plugin->src_format.channels; channel++) { + snd_assert(src_channels[channel].area.first % 8 == 0 && + src_channels[channel].area.step % 8 == 0, + return -ENXIO); + snd_assert(dst_channels[channel].area.first % 8 == 0 && + dst_channels[channel].area.step % 8 == 0, + return -ENXIO); + } + } +#endif + data = (mulaw_t *)plugin->extra_data; + data->func(plugin, src_channels, dst_channels, frames); + return frames; +} + +int snd_pcm_plugin_build_mulaw(snd_pcm_plug_t *plug, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin) +{ + int err; + mulaw_t *data; + snd_pcm_plugin_t *plugin; + snd_pcm_plugin_format_t *format; + mulaw_f func; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + + snd_assert(src_format->rate == dst_format->rate, return -ENXIO); + snd_assert(src_format->channels == dst_format->channels, return -ENXIO); + + if (dst_format->format == SNDRV_PCM_FORMAT_MU_LAW) { + format = src_format; + func = mulaw_encode; + } + else if (src_format->format == SNDRV_PCM_FORMAT_MU_LAW) { + format = dst_format; + func = mulaw_decode; + } + else { + snd_BUG(); + return -EINVAL; + } + snd_assert(snd_pcm_format_linear(format->format) != 0, return -ENXIO); + + err = snd_pcm_plugin_build(plug, "Mu-Law<->linear conversion", + src_format, dst_format, + sizeof(mulaw_t), &plugin); + if (err < 0) + return err; + data = (mulaw_t*)plugin->extra_data; + data->func = func; + data->conv = getput_index(format->format); + snd_assert(data->conv >= 0 && data->conv < 4*2*2, return -EINVAL); + plugin->transfer = mulaw_transfer; + *r_plugin = plugin; + return 0; +} diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c new file mode 100644 index 000000000000..1a805020f57a --- /dev/null +++ b/sound/core/oss/pcm_oss.c @@ -0,0 +1,2530 @@ +/* + * Digital Audio (PCM) abstract layer / OSS compatible + * Copyright (c) by Jaroslav Kysela + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#if 0 +#define PLUGIN_DEBUG +#endif +#if 0 +#define OSS_DEBUG +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "pcm_plugin.h" +#include +#include +#include + +#define OSS_ALSAEMULVER _SIOR ('M', 249, int) + +static int dsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 0}; +static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; +static int nonblock_open = 1; + +MODULE_AUTHOR("Jaroslav Kysela , Abramo Bagnara "); +MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); +MODULE_LICENSE("GPL"); +module_param_array(dsp_map, int, NULL, 0444); +MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); +module_param_array(adsp_map, int, NULL, 0444); +MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); +module_param(nonblock_open, bool, 0644); +MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); +MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); +MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); + +extern int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg); +static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file); +static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file); +static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file); + +static inline mm_segment_t snd_enter_user(void) +{ + mm_segment_t fs = get_fs(); + set_fs(get_ds()); + return fs; +} + +static inline void snd_leave_user(mm_segment_t fs) +{ + set_fs(fs); +} + +static int snd_pcm_oss_plugin_clear(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_plugin_t *plugin, *next; + + plugin = runtime->oss.plugin_first; + while (plugin) { + next = plugin->next; + snd_pcm_plugin_free(plugin); + plugin = next; + } + runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; + return 0; +} + +static int snd_pcm_plugin_insert(snd_pcm_plugin_t *plugin) +{ + snd_pcm_runtime_t *runtime = plugin->plug->runtime; + plugin->next = runtime->oss.plugin_first; + plugin->prev = NULL; + if (runtime->oss.plugin_first) { + runtime->oss.plugin_first->prev = plugin; + runtime->oss.plugin_first = plugin; + } else { + runtime->oss.plugin_last = + runtime->oss.plugin_first = plugin; + } + return 0; +} + +int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin) +{ + snd_pcm_runtime_t *runtime = plugin->plug->runtime; + plugin->next = NULL; + plugin->prev = runtime->oss.plugin_last; + if (runtime->oss.plugin_last) { + runtime->oss.plugin_last->next = plugin; + runtime->oss.plugin_last = plugin; + } else { + runtime->oss.plugin_last = + runtime->oss.plugin_first = plugin; + } + return 0; +} + +static long snd_pcm_oss_bytes(snd_pcm_substream_t *substream, long frames) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream); + frames = frames_to_bytes(runtime, frames); + if (buffer_size == runtime->oss.buffer_bytes) + return frames; + return (runtime->oss.buffer_bytes * frames) / buffer_size; +} + +static long snd_pcm_alsa_frames(snd_pcm_substream_t *substream, long bytes) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream); + if (buffer_size == runtime->oss.buffer_bytes) + return bytes_to_frames(runtime, bytes); + return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); +} + +static int snd_pcm_oss_format_from(int format) +{ + switch (format) { + case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; + case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; + case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; + case AFMT_U8: return SNDRV_PCM_FORMAT_U8; + case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; + case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; + case AFMT_S8: return SNDRV_PCM_FORMAT_S8; + case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; + case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; + case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; + default: return SNDRV_PCM_FORMAT_U8; + } +} + +static int snd_pcm_oss_format_to(int format) +{ + switch (format) { + case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; + case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; + case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; + case SNDRV_PCM_FORMAT_U8: return AFMT_U8; + case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; + case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; + case SNDRV_PCM_FORMAT_S8: return AFMT_S8; + case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; + case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; + case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; + default: return -EINVAL; + } +} + +static int snd_pcm_oss_period_size(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *oss_params, + snd_pcm_hw_params_t *slave_params) +{ + size_t s; + size_t oss_buffer_size, oss_period_size, oss_periods; + size_t min_period_size, max_period_size; + snd_pcm_runtime_t *runtime = substream->runtime; + size_t oss_frame_size; + + oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * + params_channels(oss_params) / 8; + + oss_buffer_size = snd_pcm_plug_client_size(substream, + snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; + oss_buffer_size = 1 << ld2(oss_buffer_size); + if (atomic_read(&runtime->mmap_count)) { + if (oss_buffer_size > runtime->oss.mmap_bytes) + oss_buffer_size = runtime->oss.mmap_bytes; + } + + if (substream->oss.setup && + substream->oss.setup->period_size > 16) + oss_period_size = substream->oss.setup->period_size; + else if (runtime->oss.fragshift) { + oss_period_size = 1 << runtime->oss.fragshift; + if (oss_period_size > oss_buffer_size / 2) + oss_period_size = oss_buffer_size / 2; + } else { + int sd; + size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; + + oss_period_size = oss_buffer_size; + do { + oss_period_size /= 2; + } while (oss_period_size > bytes_per_sec); + if (runtime->oss.subdivision == 0) { + sd = 4; + if (oss_period_size / sd > 4096) + sd *= 2; + if (oss_period_size / sd < 4096) + sd = 1; + } else + sd = runtime->oss.subdivision; + oss_period_size /= sd; + if (oss_period_size < 16) + oss_period_size = 16; + } + + min_period_size = snd_pcm_plug_client_size(substream, + snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); + min_period_size *= oss_frame_size; + min_period_size = 1 << (ld2(min_period_size - 1) + 1); + if (oss_period_size < min_period_size) + oss_period_size = min_period_size; + + max_period_size = snd_pcm_plug_client_size(substream, + snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); + max_period_size *= oss_frame_size; + max_period_size = 1 << ld2(max_period_size); + if (oss_period_size > max_period_size) + oss_period_size = max_period_size; + + oss_periods = oss_buffer_size / oss_period_size; + + if (substream->oss.setup) { + if (substream->oss.setup->periods > 1) + oss_periods = substream->oss.setup->periods; + } + + s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); + if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) + s = runtime->oss.maxfrags; + if (oss_periods > s) + oss_periods = s; + + s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); + if (s < 2) + s = 2; + if (oss_periods < s) + oss_periods = s; + + while (oss_period_size * oss_periods > oss_buffer_size) + oss_period_size /= 2; + + snd_assert(oss_period_size >= 16, return -EINVAL); + runtime->oss.period_bytes = oss_period_size; + runtime->oss.period_frames = 1; + runtime->oss.periods = oss_periods; + return 0; +} + +static int choose_rate(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, unsigned int best_rate) +{ + snd_interval_t *it; + snd_pcm_hw_params_t *save; + unsigned int rate, prev; + + save = kmalloc(sizeof(*save), GFP_KERNEL); + if (save == NULL) + return -ENOMEM; + *save = *params; + it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); + + /* try multiples of the best rate */ + rate = best_rate; + for (;;) { + if (it->max < rate || (it->max == rate && it->openmax)) + break; + if (it->min < rate || (it->min == rate && !it->openmin)) { + int ret; + ret = snd_pcm_hw_param_set(substream, params, + SNDRV_PCM_HW_PARAM_RATE, + rate, 0); + if (ret == (int)rate) { + kfree(save); + return rate; + } + *params = *save; + } + prev = rate; + rate += best_rate; + if (rate <= prev) + break; + } + + /* not found, use the nearest rate */ + kfree(save); + return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); +} + +static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_hw_params_t *params, *sparams; + snd_pcm_sw_params_t *sw_params; + ssize_t oss_buffer_size, oss_period_size; + size_t oss_frame_size; + int err; + int direct; + int format, sformat, n; + snd_mask_t sformat_mask; + snd_mask_t mask; + + sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); + params = kmalloc(sizeof(*params), GFP_KERNEL); + sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); + if (!sw_params || !params || !sparams) { + snd_printd("No memory\n"); + err = -ENOMEM; + goto failure; + } + + if (atomic_read(&runtime->mmap_count)) { + direct = 1; + } else { + snd_pcm_oss_setup_t *setup = substream->oss.setup; + direct = (setup != NULL && setup->direct); + } + + _snd_pcm_hw_params_any(sparams); + _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); + _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); + snd_mask_none(&mask); + if (atomic_read(&runtime->mmap_count)) + snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); + else { + snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); + if (!direct) + snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + } + err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); + if (err < 0) { + snd_printd("No usable accesses\n"); + err = -EINVAL; + goto failure; + } + choose_rate(substream, sparams, runtime->oss.rate); + snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); + + format = snd_pcm_oss_format_from(runtime->oss.format); + + sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); + if (direct) + sformat = format; + else + sformat = snd_pcm_plug_slave_format(format, &sformat_mask); + + if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { + for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { + if (snd_mask_test(&sformat_mask, sformat) && + snd_pcm_oss_format_to(sformat) >= 0) + break; + } + if (sformat > SNDRV_PCM_FORMAT_LAST) { + snd_printd("Cannot find a format!!!\n"); + err = -EINVAL; + goto failure; + } + } + err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); + snd_assert(err >= 0, goto failure); + + if (direct) { + memcpy(params, sparams, sizeof(*params)); + } else { + _snd_pcm_hw_params_any(params); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, + SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, + snd_pcm_oss_format_from(runtime->oss.format), 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, + runtime->oss.channels, 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, + runtime->oss.rate, 0); + pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", + params_access(params), params_format(params), + params_channels(params), params_rate(params)); + } + pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", + params_access(sparams), params_format(sparams), + params_channels(sparams), params_rate(sparams)); + + oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * + params_channels(params) / 8; + + snd_pcm_oss_plugin_clear(substream); + if (!direct) { + /* add necessary plugins */ + snd_pcm_oss_plugin_clear(substream); + if ((err = snd_pcm_plug_format_plugins(substream, + params, + sparams)) < 0) { + snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); + snd_pcm_oss_plugin_clear(substream); + goto failure; + } + if (runtime->oss.plugin_first) { + snd_pcm_plugin_t *plugin; + if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { + snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); + snd_pcm_oss_plugin_clear(substream); + goto failure; + } + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + err = snd_pcm_plugin_append(plugin); + } else { + err = snd_pcm_plugin_insert(plugin); + } + if (err < 0) { + snd_pcm_oss_plugin_clear(substream); + goto failure; + } + } + } + + err = snd_pcm_oss_period_size(substream, params, sparams); + if (err < 0) + goto failure; + + n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); + err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); + snd_assert(err >= 0, goto failure); + + err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, + runtime->oss.periods, NULL); + snd_assert(err >= 0, goto failure); + + snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + + if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { + snd_printd("HW_PARAMS failed: %i\n", err); + goto failure; + } + + memset(sw_params, 0, sizeof(*sw_params)); + if (runtime->oss.trigger) { + sw_params->start_threshold = 1; + } else { + sw_params->start_threshold = runtime->boundary; + } + if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) + sw_params->stop_threshold = runtime->boundary; + else + sw_params->stop_threshold = runtime->buffer_size; + sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; + sw_params->period_step = 1; + sw_params->sleep_min = 0; + sw_params->avail_min = 1; + sw_params->xfer_align = 1; + if (atomic_read(&runtime->mmap_count) || + (substream->oss.setup && substream->oss.setup->nosilence)) { + sw_params->silence_threshold = 0; + sw_params->silence_size = 0; + } else { + snd_pcm_uframes_t frames; + frames = runtime->period_size + 16; + if (frames > runtime->buffer_size) + frames = runtime->buffer_size; + sw_params->silence_threshold = frames; + sw_params->silence_size = frames; + } + + if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { + snd_printd("SW_PARAMS failed: %i\n", err); + goto failure; + } + + runtime->oss.periods = params_periods(sparams); + oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); + snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); + if (runtime->oss.plugin_first) { + err = snd_pcm_plug_alloc(substream, oss_period_size); + if (err < 0) + goto failure; + } + oss_period_size *= oss_frame_size; + + oss_buffer_size = oss_period_size * runtime->oss.periods; + snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); + + runtime->oss.period_bytes = oss_period_size; + runtime->oss.buffer_bytes = oss_buffer_size; + + pdprintf("oss: period bytes = %i, buffer bytes = %i\n", + runtime->oss.period_bytes, + runtime->oss.buffer_bytes); + pdprintf("slave: period_size = %i, buffer_size = %i\n", + params_period_size(sparams), + params_buffer_size(sparams)); + + runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); + runtime->oss.channels = params_channels(params); + runtime->oss.rate = params_rate(params); + + runtime->oss.params = 0; + runtime->oss.prepare = 1; + vfree(runtime->oss.buffer); + runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); + runtime->oss.buffer_used = 0; + if (runtime->dma_area) + snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); + + runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); + + err = 0; +failure: + kfree(sw_params); + kfree(params); + kfree(sparams); + return err; +} + +static int snd_pcm_oss_get_active_substream(snd_pcm_oss_file_t *pcm_oss_file, snd_pcm_substream_t **r_substream) +{ + int idx, err; + snd_pcm_substream_t *asubstream = NULL, *substream; + + for (idx = 0; idx < 2; idx++) { + substream = pcm_oss_file->streams[idx]; + if (substream == NULL) + continue; + if (asubstream == NULL) + asubstream = substream; + if (substream->runtime->oss.params) { + err = snd_pcm_oss_change_params(substream); + if (err < 0) + return err; + } + } + snd_assert(asubstream != NULL, return -EIO); + if (r_substream) + *r_substream = asubstream; + return 0; +} + +static int snd_pcm_oss_prepare(snd_pcm_substream_t *substream) +{ + int err; + snd_pcm_runtime_t *runtime = substream->runtime; + + err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); + if (err < 0) { + snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); + return err; + } + runtime->oss.prepare = 0; + runtime->oss.prev_hw_ptr_interrupt = 0; + runtime->oss.period_ptr = 0; + runtime->oss.buffer_used = 0; + + return 0; +} + +static int snd_pcm_oss_make_ready(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime; + int err; + + if (substream == NULL) + return 0; + runtime = substream->runtime; + if (runtime->oss.params) { + err = snd_pcm_oss_change_params(substream); + if (err < 0) + return err; + } + if (runtime->oss.prepare) { + err = snd_pcm_oss_prepare(substream); + if (err < 0) + return err; + } + return 0; +} + +static int snd_pcm_oss_capture_position_fixup(snd_pcm_substream_t *substream, snd_pcm_sframes_t *delay) +{ + snd_pcm_runtime_t *runtime; + snd_pcm_uframes_t frames; + int err = 0; + + while (1) { + err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); + if (err < 0) + break; + runtime = substream->runtime; + if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) + break; + /* in case of overrun, skip whole periods like OSS/Linux driver does */ + /* until avail(delay) <= buffer_size */ + frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; + frames /= runtime->period_size; + frames *= runtime->period_size; + err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); + if (err < 0) + break; + } + return err; +} + +snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int ret; + while (1) { + if (runtime->status->state == SNDRV_PCM_STATE_XRUN || + runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { +#ifdef OSS_DEBUG + if (runtime->status->state == SNDRV_PCM_STATE_XRUN) + printk("pcm_oss: write: recovering from XRUN\n"); + else + printk("pcm_oss: write: recovering from SUSPEND\n"); +#endif + ret = snd_pcm_oss_prepare(substream); + if (ret < 0) + break; + } + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); + ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); + snd_leave_user(fs); + } else { + ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); + } + if (ret != -EPIPE && ret != -ESTRPIPE) + break; + /* test, if we can't store new data, because the stream */ + /* has not been started */ + if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) + return -EAGAIN; + } + return ret; +} + +snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_sframes_t delay; + int ret; + while (1) { + if (runtime->status->state == SNDRV_PCM_STATE_XRUN || + runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { +#ifdef OSS_DEBUG + if (runtime->status->state == SNDRV_PCM_STATE_XRUN) + printk("pcm_oss: read: recovering from XRUN\n"); + else + printk("pcm_oss: read: recovering from SUSPEND\n"); +#endif + ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); + if (ret < 0) + break; + } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { + ret = snd_pcm_oss_prepare(substream); + if (ret < 0) + break; + } + ret = snd_pcm_oss_capture_position_fixup(substream, &delay); + if (ret < 0) + break; + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); + ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); + snd_leave_user(fs); + } else { + ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); + } + if (ret == -EPIPE) { + if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { + ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + if (ret < 0) + break; + } + continue; + } + if (ret != -ESTRPIPE) + break; + } + return ret; +} + +snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int ret; + while (1) { + if (runtime->status->state == SNDRV_PCM_STATE_XRUN || + runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { +#ifdef OSS_DEBUG + if (runtime->status->state == SNDRV_PCM_STATE_XRUN) + printk("pcm_oss: writev: recovering from XRUN\n"); + else + printk("pcm_oss: writev: recovering from SUSPEND\n"); +#endif + ret = snd_pcm_oss_prepare(substream); + if (ret < 0) + break; + } + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); + ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); + snd_leave_user(fs); + } else { + ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); + } + if (ret != -EPIPE && ret != -ESTRPIPE) + break; + + /* test, if we can't store new data, because the stream */ + /* has not been started */ + if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) + return -EAGAIN; + } + return ret; +} + +snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int ret; + while (1) { + if (runtime->status->state == SNDRV_PCM_STATE_XRUN || + runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { +#ifdef OSS_DEBUG + if (runtime->status->state == SNDRV_PCM_STATE_XRUN) + printk("pcm_oss: readv: recovering from XRUN\n"); + else + printk("pcm_oss: readv: recovering from SUSPEND\n"); +#endif + ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); + if (ret < 0) + break; + } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { + ret = snd_pcm_oss_prepare(substream); + if (ret < 0) + break; + } + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); + ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); + snd_leave_user(fs); + } else { + ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); + } + if (ret != -EPIPE && ret != -ESTRPIPE) + break; + } + return ret; +} + +static ssize_t snd_pcm_oss_write2(snd_pcm_substream_t *substream, const char *buf, size_t bytes, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_sframes_t frames, frames1; + if (runtime->oss.plugin_first) { + snd_pcm_plugin_channel_t *channels; + size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; + if (!in_kernel) { + if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) + return -EFAULT; + buf = runtime->oss.buffer; + } + frames = bytes / oss_frame_bytes; + frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); + if (frames1 < 0) + return frames1; + frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); + if (frames1 <= 0) + return frames1; + bytes = frames1 * oss_frame_bytes; + } else { + frames = bytes_to_frames(runtime, bytes); + frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); + if (frames1 <= 0) + return frames1; + bytes = frames_to_bytes(runtime, frames1); + } + return bytes; +} + +static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __user *buf, size_t bytes) +{ + size_t xfer = 0; + ssize_t tmp; + snd_pcm_runtime_t *runtime = substream->runtime; + + if (atomic_read(&runtime->mmap_count)) + return -ENXIO; + + if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) + return tmp; + while (bytes > 0) { + if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { + tmp = bytes; + if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) + tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; + if (tmp > 0) { + if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; + } + runtime->oss.buffer_used += tmp; + buf += tmp; + bytes -= tmp; + xfer += tmp; + if ((substream->oss.setup != NULL && substream->oss.setup->partialfrag) || + runtime->oss.buffer_used == runtime->oss.period_bytes) { + tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, + runtime->oss.buffer_used - runtime->oss.period_ptr, 1); + if (tmp <= 0) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; + runtime->oss.bytes += tmp; + runtime->oss.period_ptr += tmp; + runtime->oss.period_ptr %= runtime->oss.period_bytes; + if (runtime->oss.period_ptr == 0 || + runtime->oss.period_ptr == runtime->oss.buffer_used) + runtime->oss.buffer_used = 0; + else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) + return xfer > 0 ? xfer : -EAGAIN; + } + } else { + tmp = snd_pcm_oss_write2(substream, (const char *)buf, runtime->oss.period_bytes, 0); + if (tmp <= 0) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; + runtime->oss.bytes += tmp; + buf += tmp; + bytes -= tmp; + xfer += tmp; + if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && + tmp != runtime->oss.period_bytes) + break; + } + } + return xfer; +} + +static ssize_t snd_pcm_oss_read2(snd_pcm_substream_t *substream, char *buf, size_t bytes, int in_kernel) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_sframes_t frames, frames1; + char __user *final_dst = (char __user *)buf; + if (runtime->oss.plugin_first) { + snd_pcm_plugin_channel_t *channels; + size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; + if (!in_kernel) + buf = runtime->oss.buffer; + frames = bytes / oss_frame_bytes; + frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); + if (frames1 < 0) + return frames1; + frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); + if (frames1 <= 0) + return frames1; + bytes = frames1 * oss_frame_bytes; + if (!in_kernel && copy_to_user(final_dst, buf, bytes)) + return -EFAULT; + } else { + frames = bytes_to_frames(runtime, bytes); + frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); + if (frames1 <= 0) + return frames1; + bytes = frames_to_bytes(runtime, frames1); + } + return bytes; +} + +static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *buf, size_t bytes) +{ + size_t xfer = 0; + ssize_t tmp; + snd_pcm_runtime_t *runtime = substream->runtime; + + if (atomic_read(&runtime->mmap_count)) + return -ENXIO; + + if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) + return tmp; + while (bytes > 0) { + if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { + if (runtime->oss.buffer_used == 0) { + tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); + if (tmp <= 0) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; + runtime->oss.bytes += tmp; + runtime->oss.period_ptr = tmp; + runtime->oss.buffer_used = tmp; + } + tmp = bytes; + if ((size_t) tmp > runtime->oss.buffer_used) + tmp = runtime->oss.buffer_used; + if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; + buf += tmp; + bytes -= tmp; + xfer += tmp; + runtime->oss.buffer_used -= tmp; + } else { + tmp = snd_pcm_oss_read2(substream, (char *)buf, runtime->oss.period_bytes, 0); + if (tmp <= 0) + return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; + runtime->oss.bytes += tmp; + buf += tmp; + bytes -= tmp; + xfer += tmp; + } + } + return xfer; +} + +static int snd_pcm_oss_reset(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream != NULL) { + snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + substream->runtime->oss.prepare = 1; + } + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + if (substream != NULL) { + snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + substream->runtime->oss.prepare = 1; + } + return 0; +} + +static int snd_pcm_oss_post(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream != NULL) { + if ((err = snd_pcm_oss_make_ready(substream)) < 0) + return err; + snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); + } + /* note: all errors from the start action are ignored */ + /* OSS apps do not know, how to handle them */ + return 0; +} + +static int snd_pcm_oss_sync1(snd_pcm_substream_t *substream, size_t size) +{ + snd_pcm_runtime_t *runtime; + ssize_t result = 0; + long res; + wait_queue_t wait; + + runtime = substream->runtime; + init_waitqueue_entry(&wait, current); + add_wait_queue(&runtime->sleep, &wait); +#ifdef OSS_DEBUG + printk("sync1: size = %li\n", size); +#endif + while (1) { + result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); + if (result > 0) { + runtime->oss.buffer_used = 0; + result = 0; + break; + } + if (result != 0 && result != -EAGAIN) + break; + result = 0; + set_current_state(TASK_INTERRUPTIBLE); + snd_pcm_stream_lock_irq(substream); + res = runtime->status->state; + snd_pcm_stream_unlock_irq(substream); + if (res != SNDRV_PCM_STATE_RUNNING) { + set_current_state(TASK_RUNNING); + break; + } + res = schedule_timeout(10 * HZ); + if (signal_pending(current)) { + result = -ERESTARTSYS; + break; + } + if (res == 0) { + snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); + result = -EIO; + break; + } + } + remove_wait_queue(&runtime->sleep, &wait); + return result; +} + +static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file) +{ + int err = 0; + unsigned int saved_f_flags; + snd_pcm_substream_t *substream; + snd_pcm_runtime_t *runtime; + snd_pcm_format_t format; + unsigned long width; + size_t size; + + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream != NULL) { + runtime = substream->runtime; + if (atomic_read(&runtime->mmap_count)) + goto __direct; + if ((err = snd_pcm_oss_make_ready(substream)) < 0) + return err; + format = snd_pcm_oss_format_from(runtime->oss.format); + width = snd_pcm_format_physical_width(format); + if (runtime->oss.buffer_used > 0) { +#ifdef OSS_DEBUG + printk("sync: buffer_used\n"); +#endif + size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; + snd_pcm_format_set_silence(format, + runtime->oss.buffer + runtime->oss.buffer_used, + size); + err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); + if (err < 0) + return err; + } else if (runtime->oss.period_ptr > 0) { +#ifdef OSS_DEBUG + printk("sync: period_ptr\n"); +#endif + size = runtime->oss.period_bytes - runtime->oss.period_ptr; + snd_pcm_format_set_silence(format, + runtime->oss.buffer, + size * 8 / width); + err = snd_pcm_oss_sync1(substream, size); + if (err < 0) + return err; + } + /* + * The ALSA's period might be a bit large than OSS one. + * Fill the remain portion of ALSA period with zeros. + */ + size = runtime->control->appl_ptr % runtime->period_size; + if (size > 0) { + size = runtime->period_size - size; + if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + size = (runtime->frame_bits * size) / 8; + while (size > 0) { + mm_segment_t fs; + size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; + size -= size1; + size1 *= 8; + size1 /= runtime->sample_bits; + snd_pcm_format_set_silence(runtime->format, + runtime->oss.buffer, + size1); + fs = snd_enter_user(); + snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); + snd_leave_user(fs); + } + } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { + void __user *buffers[runtime->channels]; + memset(buffers, 0, runtime->channels * sizeof(void *)); + snd_pcm_lib_writev(substream, buffers, size); + } + } + /* + * finish sync: drain the buffer + */ + __direct: + saved_f_flags = substream->ffile->f_flags; + substream->ffile->f_flags &= ~O_NONBLOCK; + err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); + substream->ffile->f_flags = saved_f_flags; + if (err < 0) + return err; + runtime->oss.prepare = 1; + } + + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + if (substream != NULL) { + if ((err = snd_pcm_oss_make_ready(substream)) < 0) + return err; + runtime = substream->runtime; + err = snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + if (err < 0) + return err; + runtime->oss.buffer_used = 0; + runtime->oss.prepare = 1; + } + return 0; +} + +static int snd_pcm_oss_set_rate(snd_pcm_oss_file_t *pcm_oss_file, int rate) +{ + int idx; + + for (idx = 1; idx >= 0; --idx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + snd_pcm_runtime_t *runtime; + if (substream == NULL) + continue; + runtime = substream->runtime; + if (rate < 1000) + rate = 1000; + else if (rate > 192000) + rate = 192000; + if (runtime->oss.rate != rate) { + runtime->oss.params = 1; + runtime->oss.rate = rate; + } + } + return snd_pcm_oss_get_rate(pcm_oss_file); +} + +static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + + if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) + return err; + return substream->runtime->oss.rate; +} + +static int snd_pcm_oss_set_channels(snd_pcm_oss_file_t *pcm_oss_file, unsigned int channels) +{ + int idx; + if (channels < 1) + channels = 1; + if (channels > 128) + return -EINVAL; + for (idx = 1; idx >= 0; --idx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + snd_pcm_runtime_t *runtime; + if (substream == NULL) + continue; + runtime = substream->runtime; + if (runtime->oss.channels != channels) { + runtime->oss.params = 1; + runtime->oss.channels = channels; + } + } + return snd_pcm_oss_get_channels(pcm_oss_file); +} + +static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + + if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) + return err; + return substream->runtime->oss.channels; +} + +static int snd_pcm_oss_get_block_size(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + + if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) + return err; + return substream->runtime->oss.period_bytes; +} + +static int snd_pcm_oss_get_formats(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + int direct; + snd_pcm_hw_params_t *params; + unsigned int formats = 0; + snd_mask_t format_mask; + int fmt; + + if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) + return err; + if (atomic_read(&substream->runtime->mmap_count)) { + direct = 1; + } else { + snd_pcm_oss_setup_t *setup = substream->oss.setup; + direct = (setup != NULL && setup->direct); + } + if (!direct) + return AFMT_MU_LAW | AFMT_U8 | + AFMT_S16_LE | AFMT_S16_BE | + AFMT_S8 | AFMT_U16_LE | + AFMT_U16_BE; + params = kmalloc(sizeof(*params), GFP_KERNEL); + if (!params) + return -ENOMEM; + _snd_pcm_hw_params_any(params); + err = snd_pcm_hw_refine(substream, params); + format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + kfree(params); + snd_assert(err >= 0, return err); + for (fmt = 0; fmt < 32; ++fmt) { + if (snd_mask_test(&format_mask, fmt)) { + int f = snd_pcm_oss_format_to(fmt); + if (f >= 0) + formats |= f; + } + } + return formats; +} + +static int snd_pcm_oss_set_format(snd_pcm_oss_file_t *pcm_oss_file, int format) +{ + int formats, idx; + + if (format != AFMT_QUERY) { + formats = snd_pcm_oss_get_formats(pcm_oss_file); + if (!(formats & format)) + format = AFMT_U8; + for (idx = 1; idx >= 0; --idx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + snd_pcm_runtime_t *runtime; + if (substream == NULL) + continue; + runtime = substream->runtime; + if (runtime->oss.format != format) { + runtime->oss.params = 1; + runtime->oss.format = format; + } + } + } + return snd_pcm_oss_get_format(pcm_oss_file); +} + +static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + int err; + + if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) + return err; + return substream->runtime->oss.format; +} + +static int snd_pcm_oss_set_subdivide1(snd_pcm_substream_t *substream, int subdivide) +{ + snd_pcm_runtime_t *runtime; + + if (substream == NULL) + return 0; + runtime = substream->runtime; + if (subdivide == 0) { + subdivide = runtime->oss.subdivision; + if (subdivide == 0) + subdivide = 1; + return subdivide; + } + if (runtime->oss.subdivision || runtime->oss.fragshift) + return -EINVAL; + if (subdivide != 1 && subdivide != 2 && subdivide != 4 && + subdivide != 8 && subdivide != 16) + return -EINVAL; + runtime->oss.subdivision = subdivide; + runtime->oss.params = 1; + return subdivide; +} + +static int snd_pcm_oss_set_subdivide(snd_pcm_oss_file_t *pcm_oss_file, int subdivide) +{ + int err = -EINVAL, idx; + + for (idx = 1; idx >= 0; --idx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + if (substream == NULL) + continue; + if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) + return err; + } + return err; +} + +static int snd_pcm_oss_set_fragment1(snd_pcm_substream_t *substream, unsigned int val) +{ + snd_pcm_runtime_t *runtime; + + if (substream == NULL) + return 0; + runtime = substream->runtime; + if (runtime->oss.subdivision || runtime->oss.fragshift) + return -EINVAL; + runtime->oss.fragshift = val & 0xffff; + runtime->oss.maxfrags = (val >> 16) & 0xffff; + if (runtime->oss.fragshift < 4) /* < 16 */ + runtime->oss.fragshift = 4; + if (runtime->oss.maxfrags < 2) + runtime->oss.maxfrags = 2; + runtime->oss.params = 1; + return 0; +} + +static int snd_pcm_oss_set_fragment(snd_pcm_oss_file_t *pcm_oss_file, unsigned int val) +{ + int err = -EINVAL, idx; + + for (idx = 1; idx >= 0; --idx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + if (substream == NULL) + continue; + if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) + return err; + } + return err; +} + +static int snd_pcm_oss_nonblock(struct file * file) +{ + file->f_flags |= O_NONBLOCK; + return 0; +} + +static int snd_pcm_oss_get_caps1(snd_pcm_substream_t *substream, int res) +{ + + if (substream == NULL) { + res &= ~DSP_CAP_DUPLEX; + return res; + } +#ifdef DSP_CAP_MULTI + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + if (substream->pstr->substream_count > 1) + res |= DSP_CAP_MULTI; +#endif + /* DSP_CAP_REALTIME is set all times: */ + /* all ALSA drivers can return actual pointer in ring buffer */ +#if defined(DSP_CAP_REALTIME) && 0 + { + snd_pcm_runtime_t *runtime = substream->runtime; + if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) + res &= ~DSP_CAP_REALTIME; + } +#endif + return res; +} + +static int snd_pcm_oss_get_caps(snd_pcm_oss_file_t *pcm_oss_file) +{ + int result, idx; + + result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; + for (idx = 0; idx < 2; idx++) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; + result = snd_pcm_oss_get_caps1(substream, result); + } + result |= 0x0001; /* revision - same as SB AWE 64 */ + return result; +} + +static void snd_pcm_oss_simulate_fill(snd_pcm_substream_t *substream, snd_pcm_uframes_t hw_ptr) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + snd_pcm_uframes_t appl_ptr; + appl_ptr = hw_ptr + runtime->buffer_size; + appl_ptr %= runtime->boundary; + runtime->control->appl_ptr = appl_ptr; +} + +static int snd_pcm_oss_set_trigger(snd_pcm_oss_file_t *pcm_oss_file, int trigger) +{ + snd_pcm_runtime_t *runtime; + snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; + int err, cmd; + +#ifdef OSS_DEBUG + printk("pcm_oss: trigger = 0x%x\n", trigger); +#endif + + psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + + if (psubstream) { + if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) + return err; + } + if (csubstream) { + if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) + return err; + } + if (psubstream) { + runtime = psubstream->runtime; + if (trigger & PCM_ENABLE_OUTPUT) { + if (runtime->oss.trigger) + goto _skip1; + if (atomic_read(&psubstream->runtime->mmap_count)) + snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); + runtime->oss.trigger = 1; + runtime->start_threshold = 1; + cmd = SNDRV_PCM_IOCTL_START; + } else { + if (!runtime->oss.trigger) + goto _skip1; + runtime->oss.trigger = 0; + runtime->start_threshold = runtime->boundary; + cmd = SNDRV_PCM_IOCTL_DROP; + runtime->oss.prepare = 1; + } + err = snd_pcm_kernel_playback_ioctl(psubstream, cmd, NULL); + if (err < 0) + return err; + } + _skip1: + if (csubstream) { + runtime = csubstream->runtime; + if (trigger & PCM_ENABLE_INPUT) { + if (runtime->oss.trigger) + goto _skip2; + runtime->oss.trigger = 1; + runtime->start_threshold = 1; + cmd = SNDRV_PCM_IOCTL_START; + } else { + if (!runtime->oss.trigger) + goto _skip2; + runtime->oss.trigger = 0; + runtime->start_threshold = runtime->boundary; + cmd = SNDRV_PCM_IOCTL_DROP; + runtime->oss.prepare = 1; + } + err = snd_pcm_kernel_capture_ioctl(csubstream, cmd, NULL); + if (err < 0) + return err; + } + _skip2: + return 0; +} + +static int snd_pcm_oss_get_trigger(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; + int result = 0; + + psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) + result |= PCM_ENABLE_OUTPUT; + if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) + result |= PCM_ENABLE_INPUT; + return result; +} + +static int snd_pcm_oss_get_odelay(snd_pcm_oss_file_t *pcm_oss_file) +{ + snd_pcm_substream_t *substream; + snd_pcm_runtime_t *runtime; + snd_pcm_sframes_t delay; + int err; + + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream == NULL) + return -EINVAL; + if ((err = snd_pcm_oss_make_ready(substream)) < 0) + return err; + runtime = substream->runtime; + if (runtime->oss.params || runtime->oss.prepare) + return 0; + err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); + if (err == -EPIPE) + delay = 0; /* hack for broken OSS applications */ + else if (err < 0) + return err; + return snd_pcm_oss_bytes(substream, delay); +} + +static int snd_pcm_oss_get_ptr(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct count_info __user * _info) +{ + snd_pcm_substream_t *substream; + snd_pcm_runtime_t *runtime; + snd_pcm_sframes_t delay; + int fixup; + struct count_info info; + int err; + + if (_info == NULL) + return -EFAULT; + substream = pcm_oss_file->streams[stream]; + if (substream == NULL) + return -EINVAL; + if ((err = snd_pcm_oss_make_ready(substream)) < 0) + return err; + runtime = substream->runtime; + if (runtime->oss.params || runtime->oss.prepare) { + memset(&info, 0, sizeof(info)); + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); + if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { + err = 0; + delay = 0; + fixup = 0; + } else { + fixup = runtime->oss.buffer_used; + } + } else { + err = snd_pcm_oss_capture_position_fixup(substream, &delay); + fixup = -runtime->oss.buffer_used; + } + if (err < 0) + return err; + info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); + if (atomic_read(&runtime->mmap_count)) { + snd_pcm_sframes_t n; + n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; + if (n < 0) + n += runtime->boundary; + info.blocks = n / runtime->period_size; + runtime->oss.prev_hw_ptr_interrupt = delay; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + snd_pcm_oss_simulate_fill(substream, delay); + info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; + } else { + delay = snd_pcm_oss_bytes(substream, delay) + fixup; + info.blocks = delay / runtime->oss.period_bytes; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + info.bytes = (runtime->oss.bytes - delay) & INT_MAX; + else + info.bytes = (runtime->oss.bytes + delay) & INT_MAX; + } + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_pcm_oss_get_space(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct audio_buf_info __user *_info) +{ + snd_pcm_substream_t *substream; + snd_pcm_runtime_t *runtime; + snd_pcm_sframes_t avail; + int fixup; + struct audio_buf_info info; + int err; + + if (_info == NULL) + return -EFAULT; + substream = pcm_oss_file->streams[stream]; + if (substream == NULL) + return -EINVAL; + runtime = substream->runtime; + + if (runtime->oss.params && + (err = snd_pcm_oss_change_params(substream)) < 0) + return err; + + info.fragsize = runtime->oss.period_bytes; + info.fragstotal = runtime->periods; + if (runtime->oss.prepare) { + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + info.bytes = runtime->oss.period_bytes * runtime->oss.periods; + info.fragments = runtime->oss.periods; + } else { + info.bytes = 0; + info.fragments = 0; + } + } else { + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); + if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { + avail = runtime->buffer_size; + err = 0; + fixup = 0; + } else { + avail = runtime->buffer_size - avail; + fixup = -runtime->oss.buffer_used; + } + } else { + err = snd_pcm_oss_capture_position_fixup(substream, &avail); + fixup = runtime->oss.buffer_used; + } + if (err < 0) + return err; + info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; + info.fragments = info.bytes / runtime->oss.period_bytes; + } + +#ifdef OSS_DEBUG + printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); +#endif + if (copy_to_user(_info, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static int snd_pcm_oss_get_mapbuf(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct buffmem_desc __user * _info) +{ + // it won't be probably implemented + // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); + return -EINVAL; +} + +static snd_pcm_oss_setup_t *snd_pcm_oss_look_for_setup(snd_pcm_t *pcm, int stream, const char *task_name) +{ + const char *ptr, *ptrl; + snd_pcm_oss_setup_t *setup; + + down(&pcm->streams[stream].oss.setup_mutex); + for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { + if (!strcmp(setup->task_name, task_name)) { + up(&pcm->streams[stream].oss.setup_mutex); + return setup; + } + } + ptr = ptrl = task_name; + while (*ptr) { + if (*ptr == '/') + ptrl = ptr + 1; + ptr++; + } + if (ptrl == task_name) { + goto __not_found; + return NULL; + } + for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { + if (!strcmp(setup->task_name, ptrl)) { + up(&pcm->streams[stream].oss.setup_mutex); + return setup; + } + } + __not_found: + up(&pcm->streams[stream].oss.setup_mutex); + return NULL; +} + +static void snd_pcm_oss_init_substream(snd_pcm_substream_t *substream, + snd_pcm_oss_setup_t *setup, + int minor) +{ + snd_pcm_runtime_t *runtime; + + substream->oss.oss = 1; + substream->oss.setup = setup; + runtime = substream->runtime; + runtime->oss.params = 1; + runtime->oss.trigger = 1; + runtime->oss.rate = 8000; + switch (SNDRV_MINOR_OSS_DEVICE(minor)) { + case SNDRV_MINOR_OSS_PCM_8: + runtime->oss.format = AFMT_U8; + break; + case SNDRV_MINOR_OSS_PCM_16: + runtime->oss.format = AFMT_S16_LE; + break; + default: + runtime->oss.format = AFMT_MU_LAW; + } + runtime->oss.channels = 1; + runtime->oss.fragshift = 0; + runtime->oss.maxfrags = 0; + runtime->oss.subdivision = 0; +} + +static void snd_pcm_oss_release_substream(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime; + runtime = substream->runtime; + vfree(runtime->oss.buffer); + snd_pcm_oss_plugin_clear(substream); + substream->oss.file = NULL; + substream->oss.oss = 0; +} + +static int snd_pcm_oss_release_file(snd_pcm_oss_file_t *pcm_oss_file) +{ + int cidx; + snd_assert(pcm_oss_file != NULL, return -ENXIO); + for (cidx = 0; cidx < 2; ++cidx) { + snd_pcm_substream_t *substream = pcm_oss_file->streams[cidx]; + snd_pcm_runtime_t *runtime; + if (substream == NULL) + continue; + runtime = substream->runtime; + + snd_pcm_stream_lock_irq(substream); + if (snd_pcm_running(substream)) + snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); + snd_pcm_stream_unlock_irq(substream); + if (substream->open_flag) { + if (substream->ops->hw_free != NULL) + substream->ops->hw_free(substream); + substream->ops->close(substream); + substream->open_flag = 0; + } + substream->ffile = NULL; + snd_pcm_oss_release_substream(substream); + snd_pcm_release_substream(substream); + } + kfree(pcm_oss_file); + return 0; +} + +static int snd_pcm_oss_open_file(struct file *file, + snd_pcm_t *pcm, + snd_pcm_oss_file_t **rpcm_oss_file, + int minor, + snd_pcm_oss_setup_t *psetup, + snd_pcm_oss_setup_t *csetup) +{ + int err = 0; + snd_pcm_oss_file_t *pcm_oss_file; + snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; + unsigned int f_mode = file->f_mode; + + snd_assert(rpcm_oss_file != NULL, return -EINVAL); + *rpcm_oss_file = NULL; + + pcm_oss_file = kcalloc(1, sizeof(*pcm_oss_file), GFP_KERNEL); + if (pcm_oss_file == NULL) + return -ENOMEM; + + if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && + (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) + f_mode = FMODE_WRITE; + if ((f_mode & FMODE_WRITE) && !(psetup && psetup->disable)) { + if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &psubstream)) < 0) { + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK] = psubstream; + } + if ((f_mode & FMODE_READ) && !(csetup && csetup->disable)) { + if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_CAPTURE, + &csubstream)) < 0) { + if (!(f_mode & FMODE_WRITE) || err != -ENODEV) { + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } else { + csubstream = NULL; + } + } + pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE] = csubstream; + } + + if (psubstream == NULL && csubstream == NULL) { + snd_pcm_oss_release_file(pcm_oss_file); + return -EINVAL; + } + if (psubstream != NULL) { + psubstream->oss.file = pcm_oss_file; + err = snd_pcm_hw_constraints_init(psubstream); + if (err < 0) { + snd_printd("snd_pcm_hw_constraint_init failed\n"); + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + if ((err = psubstream->ops->open(psubstream)) < 0) { + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + psubstream->open_flag = 1; + err = snd_pcm_hw_constraints_complete(psubstream); + if (err < 0) { + snd_printd("snd_pcm_hw_constraint_complete failed\n"); + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + psubstream->ffile = file; + snd_pcm_oss_init_substream(psubstream, psetup, minor); + } + if (csubstream != NULL) { + csubstream->oss.file = pcm_oss_file; + err = snd_pcm_hw_constraints_init(csubstream); + if (err < 0) { + snd_printd("snd_pcm_hw_constraint_init failed\n"); + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + if ((err = csubstream->ops->open(csubstream)) < 0) { + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + csubstream->open_flag = 1; + err = snd_pcm_hw_constraints_complete(csubstream); + if (err < 0) { + snd_printd("snd_pcm_hw_constraint_complete failed\n"); + snd_pcm_oss_release_file(pcm_oss_file); + return err; + } + csubstream->ffile = file; + snd_pcm_oss_init_substream(csubstream, csetup, minor); + } + + file->private_data = pcm_oss_file; + *rpcm_oss_file = pcm_oss_file; + return 0; +} + + +static int snd_pcm_oss_open(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + int cardnum = SNDRV_MINOR_OSS_CARD(minor); + int device; + int err; + char task_name[32]; + snd_pcm_t *pcm; + snd_pcm_oss_file_t *pcm_oss_file; + snd_pcm_oss_setup_t *psetup = NULL, *csetup = NULL; + int nonblock; + wait_queue_t wait; + + snd_assert(cardnum >= 0 && cardnum < SNDRV_CARDS, return -ENXIO); + device = SNDRV_MINOR_OSS_DEVICE(minor) == SNDRV_MINOR_OSS_PCM1 ? + adsp_map[cardnum] : dsp_map[cardnum]; + + pcm = snd_pcm_devices[(cardnum * SNDRV_PCM_DEVICES) + device]; + if (pcm == NULL) { + err = -ENODEV; + goto __error1; + } + err = snd_card_file_add(pcm->card, file); + if (err < 0) + goto __error1; + if (!try_module_get(pcm->card->module)) { + err = -EFAULT; + goto __error2; + } + if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { + err = -EFAULT; + goto __error; + } + if (file->f_mode & FMODE_WRITE) + psetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, task_name); + if (file->f_mode & FMODE_READ) + csetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, task_name); + + nonblock = !!(file->f_flags & O_NONBLOCK); + if (psetup && !psetup->disable) { + if (psetup->nonblock) + nonblock = 1; + else if (psetup->block) + nonblock = 0; + } else if (csetup && !csetup->disable) { + if (csetup->nonblock) + nonblock = 1; + else if (csetup->block) + nonblock = 0; + } + if (!nonblock) + nonblock = nonblock_open; + + init_waitqueue_entry(&wait, current); + add_wait_queue(&pcm->open_wait, &wait); + down(&pcm->open_mutex); + while (1) { + err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, + minor, psetup, csetup); + if (err >= 0) + break; + if (err == -EAGAIN) { + if (nonblock) { + err = -EBUSY; + break; + } + } else + break; + set_current_state(TASK_INTERRUPTIBLE); + up(&pcm->open_mutex); + schedule(); + down(&pcm->open_mutex); + if (signal_pending(current)) { + err = -ERESTARTSYS; + break; + } + } + remove_wait_queue(&pcm->open_wait, &wait); + up(&pcm->open_mutex); + if (err < 0) + goto __error; + return err; + + __error: + module_put(pcm->card->module); + __error2: + snd_card_file_remove(pcm->card, file); + __error1: + return err; +} + +static int snd_pcm_oss_release(struct inode *inode, struct file *file) +{ + snd_pcm_t *pcm; + snd_pcm_substream_t *substream; + snd_pcm_oss_file_t *pcm_oss_file; + + pcm_oss_file = file->private_data; + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream == NULL) + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + snd_assert(substream != NULL, return -ENXIO); + pcm = substream->pcm; + snd_pcm_oss_sync(pcm_oss_file); + down(&pcm->open_mutex); + snd_pcm_oss_release_file(pcm_oss_file); + up(&pcm->open_mutex); + wake_up(&pcm->open_wait); + module_put(pcm->card->module); + snd_card_file_remove(pcm->card, file); + return 0; +} + +static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + snd_pcm_oss_file_t *pcm_oss_file; + int __user *p = (int __user *)arg; + int res; + + pcm_oss_file = file->private_data; + if (cmd == OSS_GETVERSION) + return put_user(SNDRV_OSS_VERSION, p); + if (cmd == OSS_ALSAEMULVER) + return put_user(1, p); +#if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) + if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ + snd_pcm_substream_t *substream; + int idx; + for (idx = 0; idx < 2; ++idx) { + substream = pcm_oss_file->streams[idx]; + if (substream != NULL) + break; + } + snd_assert(substream != NULL, return -ENXIO); + return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); + } +#endif + if (((cmd >> 8) & 0xff) != 'P') + return -EINVAL; +#ifdef OSS_DEBUG + printk("pcm_oss: ioctl = 0x%x\n", cmd); +#endif + switch (cmd) { + case SNDCTL_DSP_RESET: + return snd_pcm_oss_reset(pcm_oss_file); + case SNDCTL_DSP_SYNC: + return snd_pcm_oss_sync(pcm_oss_file); + case SNDCTL_DSP_SPEED: + if (get_user(res, p)) + return -EFAULT; + if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) + return res; + return put_user(res, p); + case SOUND_PCM_READ_RATE: + res = snd_pcm_oss_get_rate(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_STEREO: + if (get_user(res, p)) + return -EFAULT; + res = res > 0 ? 2 : 1; + if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) + return res; + return put_user(--res, p); + case SNDCTL_DSP_GETBLKSIZE: + res = snd_pcm_oss_get_block_size(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_SETFMT: + if (get_user(res, p)) + return -EFAULT; + res = snd_pcm_oss_set_format(pcm_oss_file, res); + if (res < 0) + return res; + return put_user(res, p); + case SOUND_PCM_READ_BITS: + res = snd_pcm_oss_get_format(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_CHANNELS: + if (get_user(res, p)) + return -EFAULT; + res = snd_pcm_oss_set_channels(pcm_oss_file, res); + if (res < 0) + return res; + return put_user(res, p); + case SOUND_PCM_READ_CHANNELS: + res = snd_pcm_oss_get_channels(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SOUND_PCM_WRITE_FILTER: + case SOUND_PCM_READ_FILTER: + return -EIO; + case SNDCTL_DSP_POST: + return snd_pcm_oss_post(pcm_oss_file); + case SNDCTL_DSP_SUBDIVIDE: + if (get_user(res, p)) + return -EFAULT; + res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_SETFRAGMENT: + if (get_user(res, p)) + return -EFAULT; + return snd_pcm_oss_set_fragment(pcm_oss_file, res); + case SNDCTL_DSP_GETFMTS: + res = snd_pcm_oss_get_formats(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_GETOSPACE: + case SNDCTL_DSP_GETISPACE: + return snd_pcm_oss_get_space(pcm_oss_file, + cmd == SNDCTL_DSP_GETISPACE ? + SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, + (struct audio_buf_info __user *) arg); + case SNDCTL_DSP_NONBLOCK: + return snd_pcm_oss_nonblock(file); + case SNDCTL_DSP_GETCAPS: + res = snd_pcm_oss_get_caps(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_GETTRIGGER: + res = snd_pcm_oss_get_trigger(pcm_oss_file); + if (res < 0) + return res; + return put_user(res, p); + case SNDCTL_DSP_SETTRIGGER: + if (get_user(res, p)) + return -EFAULT; + return snd_pcm_oss_set_trigger(pcm_oss_file, res); + case SNDCTL_DSP_GETIPTR: + case SNDCTL_DSP_GETOPTR: + return snd_pcm_oss_get_ptr(pcm_oss_file, + cmd == SNDCTL_DSP_GETIPTR ? + SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, + (struct count_info __user *) arg); + case SNDCTL_DSP_MAPINBUF: + case SNDCTL_DSP_MAPOUTBUF: + return snd_pcm_oss_get_mapbuf(pcm_oss_file, + cmd == SNDCTL_DSP_MAPINBUF ? + SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, + (struct buffmem_desc __user *) arg); + case SNDCTL_DSP_SETSYNCRO: + /* stop DMA now.. */ + return 0; + case SNDCTL_DSP_SETDUPLEX: + if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) + return 0; + return -EIO; + case SNDCTL_DSP_GETODELAY: + res = snd_pcm_oss_get_odelay(pcm_oss_file); + if (res < 0) { + /* it's for sure, some broken apps don't check for error codes */ + put_user(0, p); + return res; + } + return put_user(res, p); + case SNDCTL_DSP_PROFILE: + return 0; /* silently ignore */ + default: + snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); + } + return -EINVAL; +} + +#ifdef CONFIG_COMPAT +/* all compatible */ +#define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl +#else +#define snd_pcm_oss_ioctl_compat NULL +#endif + +static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) +{ + snd_pcm_oss_file_t *pcm_oss_file; + snd_pcm_substream_t *substream; + + pcm_oss_file = file->private_data; + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + if (substream == NULL) + return -ENXIO; +#ifndef OSS_DEBUG + return snd_pcm_oss_read1(substream, buf, count); +#else + { + ssize_t res = snd_pcm_oss_read1(substream, buf, count); + printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); + return res; + } +#endif +} + +static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) +{ + snd_pcm_oss_file_t *pcm_oss_file; + snd_pcm_substream_t *substream; + long result; + + pcm_oss_file = file->private_data; + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream == NULL) + return -ENXIO; + up(&file->f_dentry->d_inode->i_sem); + result = snd_pcm_oss_write1(substream, buf, count); + down(&file->f_dentry->d_inode->i_sem); +#ifdef OSS_DEBUG + printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); +#endif + return result; +} + +static int snd_pcm_oss_playback_ready(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + if (atomic_read(&runtime->mmap_count)) + return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; + else + return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; +} + +static int snd_pcm_oss_capture_ready(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + if (atomic_read(&runtime->mmap_count)) + return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; + else + return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; +} + +static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) +{ + snd_pcm_oss_file_t *pcm_oss_file; + unsigned int mask; + snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; + + pcm_oss_file = file->private_data; + + psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + + mask = 0; + if (psubstream != NULL) { + snd_pcm_runtime_t *runtime = psubstream->runtime; + poll_wait(file, &runtime->sleep, wait); + snd_pcm_stream_lock_irq(psubstream); + if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && + (runtime->status->state != SNDRV_PCM_STATE_RUNNING || + snd_pcm_oss_playback_ready(psubstream))) + mask |= POLLOUT | POLLWRNORM; + snd_pcm_stream_unlock_irq(psubstream); + } + if (csubstream != NULL) { + snd_pcm_runtime_t *runtime = csubstream->runtime; + enum sndrv_pcm_state ostate; + poll_wait(file, &runtime->sleep, wait); + snd_pcm_stream_lock_irq(csubstream); + if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || + snd_pcm_oss_capture_ready(csubstream)) + mask |= POLLIN | POLLRDNORM; + snd_pcm_stream_unlock_irq(csubstream); + if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { + snd_pcm_oss_file_t ofile; + memset(&ofile, 0, sizeof(ofile)); + ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + runtime->oss.trigger = 0; + snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); + } + } + + return mask; +} + +static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) +{ + snd_pcm_oss_file_t *pcm_oss_file; + snd_pcm_substream_t *substream = NULL; + snd_pcm_runtime_t *runtime; + int err; + +#ifdef OSS_DEBUG + printk("pcm_oss: mmap begin\n"); +#endif + pcm_oss_file = file->private_data; + switch ((area->vm_flags & (VM_READ | VM_WRITE))) { + case VM_READ | VM_WRITE: + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (substream) + break; + /* Fall through */ + case VM_READ: + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; + break; + case VM_WRITE: + substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; + break; + default: + return -EINVAL; + } + /* set VM_READ access as well to fix memset() routines that do + reads before writes (to improve performance) */ + area->vm_flags |= VM_READ; + if (substream == NULL) + return -ENXIO; + runtime = substream->runtime; + if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) + return -EIO; + if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) + runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; + else + return -EIO; + + if (runtime->oss.params) { + if ((err = snd_pcm_oss_change_params(substream)) < 0) + return err; + } + if (runtime->oss.plugin_first != NULL) + return -EIO; + + if (area->vm_pgoff != 0) + return -EINVAL; + + err = snd_pcm_mmap_data(substream, file, area); + if (err < 0) + return err; + runtime->oss.mmap_bytes = area->vm_end - area->vm_start; + runtime->silence_threshold = 0; + runtime->silence_size = 0; +#ifdef OSS_DEBUG + printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); +#endif + /* In mmap mode we never stop */ + runtime->stop_threshold = runtime->boundary; + + return 0; +} + +/* + * /proc interface + */ + +static void snd_pcm_oss_proc_read(snd_info_entry_t *entry, + snd_info_buffer_t * buffer) +{ + snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; + snd_pcm_oss_setup_t *setup = pstr->oss.setup_list; + down(&pstr->oss.setup_mutex); + while (setup) { + snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", + setup->task_name, + setup->periods, + setup->period_size, + setup->disable ? " disable" : "", + setup->direct ? " direct" : "", + setup->block ? " block" : "", + setup->nonblock ? " non-block" : "", + setup->partialfrag ? " partial-frag" : "", + setup->nosilence ? " no-silence" : ""); + setup = setup->next; + } + up(&pstr->oss.setup_mutex); +} + +static void snd_pcm_oss_proc_free_setup_list(snd_pcm_str_t * pstr) +{ + unsigned int idx; + snd_pcm_substream_t *substream; + snd_pcm_oss_setup_t *setup, *setupn; + + for (idx = 0, substream = pstr->substream; + idx < pstr->substream_count; idx++, substream = substream->next) + substream->oss.setup = NULL; + for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; + setup; setup = setupn) { + setupn = setup->next; + kfree(setup->task_name); + kfree(setup); + } + pstr->oss.setup_list = NULL; +} + +static void snd_pcm_oss_proc_write(snd_info_entry_t *entry, + snd_info_buffer_t * buffer) +{ + snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; + char line[128], str[32], task_name[32], *ptr; + int idx1; + snd_pcm_oss_setup_t *setup, *setup1, template; + + while (!snd_info_get_line(buffer, line, sizeof(line))) { + down(&pstr->oss.setup_mutex); + memset(&template, 0, sizeof(template)); + ptr = snd_info_get_str(task_name, line, sizeof(task_name)); + if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { + snd_pcm_oss_proc_free_setup_list(pstr); + up(&pstr->oss.setup_mutex); + continue; + } + for (setup = pstr->oss.setup_list; setup; setup = setup->next) { + if (!strcmp(setup->task_name, task_name)) { + template = *setup; + break; + } + } + ptr = snd_info_get_str(str, ptr, sizeof(str)); + template.periods = simple_strtoul(str, NULL, 10); + ptr = snd_info_get_str(str, ptr, sizeof(str)); + template.period_size = simple_strtoul(str, NULL, 10); + for (idx1 = 31; idx1 >= 0; idx1--) + if (template.period_size & (1 << idx1)) + break; + for (idx1--; idx1 >= 0; idx1--) + template.period_size &= ~(1 << idx1); + do { + ptr = snd_info_get_str(str, ptr, sizeof(str)); + if (!strcmp(str, "disable")) { + template.disable = 1; + } else if (!strcmp(str, "direct")) { + template.direct = 1; + } else if (!strcmp(str, "block")) { + template.block = 1; + } else if (!strcmp(str, "non-block")) { + template.nonblock = 1; + } else if (!strcmp(str, "partial-frag")) { + template.partialfrag = 1; + } else if (!strcmp(str, "no-silence")) { + template.nosilence = 1; + } + } while (*str); + if (setup == NULL) { + setup = (snd_pcm_oss_setup_t *) kmalloc(sizeof(snd_pcm_oss_setup_t), GFP_KERNEL); + if (setup) { + if (pstr->oss.setup_list == NULL) { + pstr->oss.setup_list = setup; + } else { + for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next); + setup1->next = setup; + } + template.task_name = snd_kmalloc_strdup(task_name, GFP_KERNEL); + } else { + buffer->error = -ENOMEM; + } + } + if (setup) + *setup = template; + up(&pstr->oss.setup_mutex); + } +} + +static void snd_pcm_oss_proc_init(snd_pcm_t *pcm) +{ + int stream; + for (stream = 0; stream < 2; ++stream) { + snd_info_entry_t *entry; + snd_pcm_str_t *pstr = &pcm->streams[stream]; + if (pstr->substream_count == 0) + continue; + if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { + entry->content = SNDRV_INFO_CONTENT_TEXT; + entry->mode = S_IFREG | S_IRUGO | S_IWUSR; + entry->c.text.read_size = 8192; + entry->c.text.read = snd_pcm_oss_proc_read; + entry->c.text.write_size = 8192; + entry->c.text.write = snd_pcm_oss_proc_write; + entry->private_data = pstr; + if (snd_info_register(entry) < 0) { + snd_info_free_entry(entry); + entry = NULL; + } + } + pstr->oss.proc_entry = entry; + } +} + +static void snd_pcm_oss_proc_done(snd_pcm_t *pcm) +{ + int stream; + for (stream = 0; stream < 2; ++stream) { + snd_pcm_str_t *pstr = &pcm->streams[stream]; + if (pstr->oss.proc_entry) { + snd_info_unregister(pstr->oss.proc_entry); + pstr->oss.proc_entry = NULL; + snd_pcm_oss_proc_free_setup_list(pstr); + } + } +} + +/* + * ENTRY functions + */ + +static struct file_operations snd_pcm_oss_f_reg = +{ + .owner = THIS_MODULE, + .read = snd_pcm_oss_read, + .write = snd_pcm_oss_write, + .open = snd_pcm_oss_open, + .release = snd_pcm_oss_release, + .poll = snd_pcm_oss_poll, + .unlocked_ioctl = snd_pcm_oss_ioctl, + .compat_ioctl = snd_pcm_oss_ioctl_compat, + .mmap = snd_pcm_oss_mmap, +}; + +static snd_minor_t snd_pcm_oss_reg = +{ + .comment = "digital audio", + .f_ops = &snd_pcm_oss_f_reg, +}; + +static void register_oss_dsp(snd_pcm_t *pcm, int index) +{ + char name[128]; + sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); + if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, + pcm->card, index, &snd_pcm_oss_reg, + name) < 0) { + snd_printk("unable to register OSS PCM device %i:%i\n", pcm->card->number, pcm->device); + } +} + +static int snd_pcm_oss_register_minor(snd_pcm_t * pcm) +{ + pcm->oss.reg = 0; + if (dsp_map[pcm->card->number] == (int)pcm->device) { + char name[128]; + int duplex; + register_oss_dsp(pcm, 0); + duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && + pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && + !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); + sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); +#ifdef SNDRV_OSS_INFO_DEV_AUDIO + snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, + pcm->card->number, + name); +#endif + pcm->oss.reg++; + pcm->oss.reg_mask |= 1; + } + if (adsp_map[pcm->card->number] == (int)pcm->device) { + register_oss_dsp(pcm, 1); + pcm->oss.reg++; + pcm->oss.reg_mask |= 2; + } + + if (pcm->oss.reg) + snd_pcm_oss_proc_init(pcm); + + return 0; +} + +static int snd_pcm_oss_disconnect_minor(snd_pcm_t * pcm) +{ + if (pcm->oss.reg) { + if (pcm->oss.reg_mask & 1) { + pcm->oss.reg_mask &= ~1; + snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, + pcm->card, 0); + } + if (pcm->oss.reg_mask & 2) { + pcm->oss.reg_mask &= ~2; + snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, + pcm->card, 1); + } + } + return 0; +} + +static int snd_pcm_oss_unregister_minor(snd_pcm_t * pcm) +{ + snd_pcm_oss_disconnect_minor(pcm); + if (pcm->oss.reg) { + if (dsp_map[pcm->card->number] == (int)pcm->device) { +#ifdef SNDRV_OSS_INFO_DEV_AUDIO + snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); +#endif + } + pcm->oss.reg = 0; + snd_pcm_oss_proc_done(pcm); + } + return 0; +} + +static snd_pcm_notify_t snd_pcm_oss_notify = +{ + .n_register = snd_pcm_oss_register_minor, + .n_disconnect = snd_pcm_oss_disconnect_minor, + .n_unregister = snd_pcm_oss_unregister_minor, +}; + +static int __init alsa_pcm_oss_init(void) +{ + int i; + int err; + + /* check device map table */ + for (i = 0; i < SNDRV_CARDS; i++) { + if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { + snd_printk("invalid dsp_map[%d] = %d\n", i, dsp_map[i]); + dsp_map[i] = 0; + } + if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { + snd_printk("invalid adsp_map[%d] = %d\n", i, adsp_map[i]); + adsp_map[i] = 1; + } + } + if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) + return err; + return 0; +} + +static void __exit alsa_pcm_oss_exit(void) +{ + snd_pcm_notify(&snd_pcm_oss_notify, 1); +} + +module_init(alsa_pcm_oss_init) +module_exit(alsa_pcm_oss_exit) diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c new file mode 100644 index 000000000000..6bb31009f0b4 --- /dev/null +++ b/sound/core/oss/pcm_plugin.c @@ -0,0 +1,921 @@ +/* + * PCM Plug-In shared (kernel/library) code + * Copyright (c) 1999 by Jaroslav Kysela + * Copyright (c) 2000 by Abramo Bagnara + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#if 0 +#define PLUGIN_DEBUG +#endif + +#include +#include +#include +#include +#include +#include +#include +#include "pcm_plugin.h" + +#define snd_pcm_plug_first(plug) ((plug)->runtime->oss.plugin_first) +#define snd_pcm_plug_last(plug) ((plug)->runtime->oss.plugin_last) + +static int snd_pcm_plugin_src_channels_mask(snd_pcm_plugin_t *plugin, + bitset_t *dst_vmask, + bitset_t **src_vmask) +{ + bitset_t *vmask = plugin->src_vmask; + bitset_copy(vmask, dst_vmask, plugin->src_format.channels); + *src_vmask = vmask; + return 0; +} + +static int snd_pcm_plugin_dst_channels_mask(snd_pcm_plugin_t *plugin, + bitset_t *src_vmask, + bitset_t **dst_vmask) +{ + bitset_t *vmask = plugin->dst_vmask; + bitset_copy(vmask, src_vmask, plugin->dst_format.channels); + *dst_vmask = vmask; + return 0; +} + +/* + * because some cards might have rates "very close", we ignore + * all "resampling" requests within +-5% + */ +static int rate_match(unsigned int src_rate, unsigned int dst_rate) +{ + unsigned int low = (src_rate * 95) / 100; + unsigned int high = (src_rate * 105) / 100; + return dst_rate >= low && dst_rate <= high; +} + +static int snd_pcm_plugin_alloc(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t frames) +{ + snd_pcm_plugin_format_t *format; + ssize_t width; + size_t size; + unsigned int channel; + snd_pcm_plugin_channel_t *c; + + if (plugin->stream == SNDRV_PCM_STREAM_PLAYBACK) { + format = &plugin->src_format; + } else { + format = &plugin->dst_format; + } + if ((width = snd_pcm_format_physical_width(format->format)) < 0) + return width; + size = frames * format->channels * width; + snd_assert((size % 8) == 0, return -ENXIO); + size /= 8; + if (plugin->buf_frames < frames) { + vfree(plugin->buf); + plugin->buf = vmalloc(size); + plugin->buf_frames = frames; + } + if (!plugin->buf) { + plugin->buf_frames = 0; + return -ENOMEM; + } + c = plugin->buf_channels; + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + for (channel = 0; channel < format->channels; channel++, c++) { + c->frames = frames; + c->enabled = 1; + c->wanted = 0; + c->area.addr = plugin->buf; + c->area.first = channel * width; + c->area.step = format->channels * width; + } + } else if (plugin->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { + snd_assert((size % format->channels) == 0,); + size /= format->channels; + for (channel = 0; channel < format->channels; channel++, c++) { + c->frames = frames; + c->enabled = 1; + c->wanted = 0; + c->area.addr = plugin->buf + (channel * size); + c->area.first = 0; + c->area.step = width; + } + } else + return -EINVAL; + return 0; +} + +int snd_pcm_plug_alloc(snd_pcm_plug_t *plug, snd_pcm_uframes_t frames) +{ + int err; + snd_assert(snd_pcm_plug_first(plug) != NULL, return -ENXIO); + if (snd_pcm_plug_stream(plug) == SNDRV_PCM_STREAM_PLAYBACK) { + snd_pcm_plugin_t *plugin = snd_pcm_plug_first(plug); + while (plugin->next) { + if (plugin->dst_frames) + frames = plugin->dst_frames(plugin, frames); + snd_assert(frames > 0, return -ENXIO); + plugin = plugin->next; + err = snd_pcm_plugin_alloc(plugin, frames); + if (err < 0) + return err; + } + } else { + snd_pcm_plugin_t *plugin = snd_pcm_plug_last(plug); + while (plugin->prev) { + if (plugin->src_frames) + frames = plugin->src_frames(plugin, frames); + snd_assert(frames > 0, return -ENXIO); + plugin = plugin->prev; + err = snd_pcm_plugin_alloc(plugin, frames); + if (err < 0) + return err; + } + } + return 0; +} + + +snd_pcm_sframes_t snd_pcm_plugin_client_channels(snd_pcm_plugin_t *plugin, + snd_pcm_uframes_t frames, + snd_pcm_plugin_channel_t **channels) +{ + *channels = plugin->buf_channels; + return frames; +} + +int snd_pcm_plugin_build(snd_pcm_plug_t *plug, + const char *name, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + size_t extra, + snd_pcm_plugin_t **ret) +{ + snd_pcm_plugin_t *plugin; + unsigned int channels; + + snd_assert(plug != NULL, return -ENXIO); + snd_assert(src_format != NULL && dst_format != NULL, return -ENXIO); + plugin = kcalloc(1, sizeof(*plugin) + extra, GFP_KERNEL); + if (plugin == NULL) + return -ENOMEM; + plugin->name = name; + plugin->plug = plug; + plugin->stream = snd_pcm_plug_stream(plug); + plugin->access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + plugin->src_format = *src_format; + plugin->src_width = snd_pcm_format_physical_width(src_format->format); + snd_assert(plugin->src_width > 0, ); + plugin->dst_format = *dst_format; + plugin->dst_width = snd_pcm_format_physical_width(dst_format->format); + snd_assert(plugin->dst_width > 0, ); + if (plugin->stream == SNDRV_PCM_STREAM_PLAYBACK) + channels = src_format->channels; + else + channels = dst_format->channels; + plugin->buf_channels = kcalloc(channels, sizeof(*plugin->buf_channels), GFP_KERNEL); + if (plugin->buf_channels == NULL) { + snd_pcm_plugin_free(plugin); + return -ENOMEM; + } + plugin->src_vmask = bitset_alloc(src_format->channels); + if (plugin->src_vmask == NULL) { + snd_pcm_plugin_free(plugin); + return -ENOMEM; + } + plugin->dst_vmask = bitset_alloc(dst_format->channels); + if (plugin->dst_vmask == NULL) { + snd_pcm_plugin_free(plugin); + return -ENOMEM; + } + plugin->client_channels = snd_pcm_plugin_client_channels; + plugin->src_channels_mask = snd_pcm_plugin_src_channels_mask; + plugin->dst_channels_mask = snd_pcm_plugin_dst_channels_mask; + *ret = plugin; + return 0; +} + +int snd_pcm_plugin_free(snd_pcm_plugin_t *plugin) +{ + if (! plugin) + return 0; + if (plugin->private_free) + plugin->private_free(plugin); + kfree(plugin->buf_channels); + vfree(plugin->buf); + kfree(plugin->src_vmask); + kfree(plugin->dst_vmask); + kfree(plugin); + return 0; +} + +snd_pcm_sframes_t snd_pcm_plug_client_size(snd_pcm_plug_t *plug, snd_pcm_uframes_t drv_frames) +{ + snd_pcm_plugin_t *plugin, *plugin_prev, *plugin_next; + int stream = snd_pcm_plug_stream(plug); + + snd_assert(plug != NULL, return -ENXIO); + if (drv_frames == 0) + return 0; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + plugin = snd_pcm_plug_last(plug); + while (plugin && drv_frames > 0) { + plugin_prev = plugin->prev; + if (plugin->src_frames) + drv_frames = plugin->src_frames(plugin, drv_frames); + plugin = plugin_prev; + } + } else if (stream == SNDRV_PCM_STREAM_CAPTURE) { + plugin = snd_pcm_plug_first(plug); + while (plugin && drv_frames > 0) { + plugin_next = plugin->next; + if (plugin->dst_frames) + drv_frames = plugin->dst_frames(plugin, drv_frames); + plugin = plugin_next; + } + } else + snd_BUG(); + return drv_frames; +} + +snd_pcm_sframes_t snd_pcm_plug_slave_size(snd_pcm_plug_t *plug, snd_pcm_uframes_t clt_frames) +{ + snd_pcm_plugin_t *plugin, *plugin_prev, *plugin_next; + snd_pcm_sframes_t frames; + int stream = snd_pcm_plug_stream(plug); + + snd_assert(plug != NULL, return -ENXIO); + if (clt_frames == 0) + return 0; + frames = clt_frames; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + plugin = snd_pcm_plug_first(plug); + while (plugin && frames > 0) { + plugin_next = plugin->next; + if (plugin->dst_frames) { + frames = plugin->dst_frames(plugin, frames); + if (frames < 0) + return frames; + } + plugin = plugin_next; + } + } else if (stream == SNDRV_PCM_STREAM_CAPTURE) { + plugin = snd_pcm_plug_last(plug); + while (plugin) { + plugin_prev = plugin->prev; + if (plugin->src_frames) { + frames = plugin->src_frames(plugin, frames); + if (frames < 0) + return frames; + } + plugin = plugin_prev; + } + } else + snd_BUG(); + return frames; +} + +static int snd_pcm_plug_formats(snd_mask_t *mask, int format) +{ + snd_mask_t formats = *mask; + u64 linfmts = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE | + SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_S24_LE | + SNDRV_PCM_FMTBIT_U24_BE | SNDRV_PCM_FMTBIT_S24_BE | + SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE | + SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE); + snd_mask_set(&formats, SNDRV_PCM_FORMAT_MU_LAW); + + if (formats.bits[0] & (u32)linfmts) + formats.bits[0] |= (u32)linfmts; + if (formats.bits[1] & (u32)(linfmts >> 32)) + formats.bits[1] |= (u32)(linfmts >> 32); + return snd_mask_test(&formats, format); +} + +static int preferred_formats[] = { + SNDRV_PCM_FORMAT_S16_LE, + SNDRV_PCM_FORMAT_S16_BE, + SNDRV_PCM_FORMAT_U16_LE, + SNDRV_PCM_FORMAT_U16_BE, + SNDRV_PCM_FORMAT_S24_LE, + SNDRV_PCM_FORMAT_S24_BE, + SNDRV_PCM_FORMAT_U24_LE, + SNDRV_PCM_FORMAT_U24_BE, + SNDRV_PCM_FORMAT_S32_LE, + SNDRV_PCM_FORMAT_S32_BE, + SNDRV_PCM_FORMAT_U32_LE, + SNDRV_PCM_FORMAT_U32_BE, + SNDRV_PCM_FORMAT_S8, + SNDRV_PCM_FORMAT_U8 +}; + +int snd_pcm_plug_slave_format(int format, snd_mask_t *format_mask) +{ + if (snd_mask_test(format_mask, format)) + return format; + if (! snd_pcm_plug_formats(format_mask, format)) + return -EINVAL; + if (snd_pcm_format_linear(format)) { + int width = snd_pcm_format_width(format); + int unsignd = snd_pcm_format_unsigned(format); + int big = snd_pcm_format_big_endian(format); + int format1; + int wid, width1=width; + int dwidth1 = 8; + for (wid = 0; wid < 4; ++wid) { + int end, big1 = big; + for (end = 0; end < 2; ++end) { + int sgn, unsignd1 = unsignd; + for (sgn = 0; sgn < 2; ++sgn) { + format1 = snd_pcm_build_linear_format(width1, unsignd1, big1); + if (format1 >= 0 && + snd_mask_test(format_mask, format1)) + goto _found; + unsignd1 = !unsignd1; + } + big1 = !big1; + } + if (width1 == 32) { + dwidth1 = -dwidth1; + width1 = width; + } + width1 += dwidth1; + } + return -EINVAL; + _found: + return format1; + } else { + unsigned int i; + switch (format) { + case SNDRV_PCM_FORMAT_MU_LAW: + for (i = 0; i < ARRAY_SIZE(preferred_formats); ++i) { + int format1 = preferred_formats[i]; + if (snd_mask_test(format_mask, format1)) + return format1; + } + default: + return -EINVAL; + } + } +} + +int snd_pcm_plug_format_plugins(snd_pcm_plug_t *plug, + snd_pcm_hw_params_t *params, + snd_pcm_hw_params_t *slave_params) +{ + snd_pcm_plugin_format_t tmpformat; + snd_pcm_plugin_format_t dstformat; + snd_pcm_plugin_format_t srcformat; + int src_access, dst_access; + snd_pcm_plugin_t *plugin = NULL; + int err; + int stream = snd_pcm_plug_stream(plug); + int slave_interleaved = (params_channels(slave_params) == 1 || + params_access(slave_params) == SNDRV_PCM_ACCESS_RW_INTERLEAVED); + + switch (stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + dstformat.format = params_format(slave_params); + dstformat.rate = params_rate(slave_params); + dstformat.channels = params_channels(slave_params); + srcformat.format = params_format(params); + srcformat.rate = params_rate(params); + srcformat.channels = params_channels(params); + src_access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + dst_access = (slave_interleaved ? SNDRV_PCM_ACCESS_RW_INTERLEAVED : + SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + break; + case SNDRV_PCM_STREAM_CAPTURE: + dstformat.format = params_format(params); + dstformat.rate = params_rate(params); + dstformat.channels = params_channels(params); + srcformat.format = params_format(slave_params); + srcformat.rate = params_rate(slave_params); + srcformat.channels = params_channels(slave_params); + src_access = (slave_interleaved ? SNDRV_PCM_ACCESS_RW_INTERLEAVED : + SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + dst_access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + break; + default: + snd_BUG(); + return -EINVAL; + } + tmpformat = srcformat; + + pdprintf("srcformat: format=%i, rate=%i, channels=%i\n", + srcformat.format, + srcformat.rate, + srcformat.channels); + pdprintf("dstformat: format=%i, rate=%i, channels=%i\n", + dstformat.format, + dstformat.rate, + dstformat.channels); + + /* Format change (linearization) */ + if ((srcformat.format != dstformat.format || + !rate_match(srcformat.rate, dstformat.rate) || + srcformat.channels != dstformat.channels) && + !snd_pcm_format_linear(srcformat.format)) { + if (snd_pcm_format_linear(dstformat.format)) + tmpformat.format = dstformat.format; + else + tmpformat.format = SNDRV_PCM_FORMAT_S16; + switch (srcformat.format) { + case SNDRV_PCM_FORMAT_MU_LAW: + err = snd_pcm_plugin_build_mulaw(plug, + &srcformat, &tmpformat, + &plugin); + break; + default: + return -EINVAL; + } + pdprintf("format change: src=%i, dst=%i returns %i\n", srcformat.format, tmpformat.format, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* channels reduction */ + if (srcformat.channels > dstformat.channels) { + int sv = srcformat.channels; + int dv = dstformat.channels; + route_ttable_entry_t *ttable = kcalloc(dv * sv, sizeof(*ttable), GFP_KERNEL); + if (ttable == NULL) + return -ENOMEM; +#if 1 + if (sv == 2 && dv == 1) { + ttable[0] = HALF; + ttable[1] = HALF; + } else +#endif + { + int v; + for (v = 0; v < dv; ++v) + ttable[v * sv + v] = FULL; + } + tmpformat.channels = dstformat.channels; + if (rate_match(srcformat.rate, dstformat.rate) && + snd_pcm_format_linear(dstformat.format)) + tmpformat.format = dstformat.format; + err = snd_pcm_plugin_build_route(plug, + &srcformat, &tmpformat, + ttable, &plugin); + kfree(ttable); + pdprintf("channels reduction: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* rate resampling */ + if (!rate_match(srcformat.rate, dstformat.rate)) { + tmpformat.rate = dstformat.rate; + if (srcformat.channels == dstformat.channels && + snd_pcm_format_linear(dstformat.format)) + tmpformat.format = dstformat.format; + err = snd_pcm_plugin_build_rate(plug, + &srcformat, &tmpformat, + &plugin); + pdprintf("rate down resampling: src=%i, dst=%i returns %i\n", srcformat.rate, tmpformat.rate, err); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* channels extension */ + if (srcformat.channels < dstformat.channels) { + int sv = srcformat.channels; + int dv = dstformat.channels; + route_ttable_entry_t *ttable = kcalloc(dv * sv, sizeof(*ttable), GFP_KERNEL); + if (ttable == NULL) + return -ENOMEM; +#if 0 + { + int v; + for (v = 0; v < sv; ++v) + ttable[v * sv + v] = FULL; + } +#else + { + /* Playback is spreaded on all channels */ + int vd, vs; + for (vd = 0, vs = 0; vd < dv; ++vd) { + ttable[vd * sv + vs] = FULL; + vs++; + if (vs == sv) + vs = 0; + } + } +#endif + tmpformat.channels = dstformat.channels; + if (snd_pcm_format_linear(dstformat.format)) + tmpformat.format = dstformat.format; + err = snd_pcm_plugin_build_route(plug, + &srcformat, &tmpformat, + ttable, &plugin); + kfree(ttable); + pdprintf("channels extension: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* format change */ + if (srcformat.format != dstformat.format) { + tmpformat.format = dstformat.format; + if (tmpformat.format == SNDRV_PCM_FORMAT_MU_LAW) { + err = snd_pcm_plugin_build_mulaw(plug, + &srcformat, &tmpformat, + &plugin); + } + else if (snd_pcm_format_linear(srcformat.format) && + snd_pcm_format_linear(tmpformat.format)) { + err = snd_pcm_plugin_build_linear(plug, + &srcformat, &tmpformat, + &plugin); + } + else + return -EINVAL; + pdprintf("format change: src=%i, dst=%i returns %i\n", srcformat.format, tmpformat.format, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* de-interleave */ + if (src_access != dst_access) { + err = snd_pcm_plugin_build_copy(plug, + &srcformat, + &tmpformat, + &plugin); + pdprintf("interleave change (copy: returns %i)\n", err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + } + + return 0; +} + +snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(snd_pcm_plug_t *plug, + char *buf, + snd_pcm_uframes_t count, + snd_pcm_plugin_channel_t **channels) +{ + snd_pcm_plugin_t *plugin; + snd_pcm_plugin_channel_t *v; + snd_pcm_plugin_format_t *format; + int width, nchannels, channel; + int stream = snd_pcm_plug_stream(plug); + + snd_assert(buf != NULL, return -ENXIO); + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + plugin = snd_pcm_plug_first(plug); + format = &plugin->src_format; + } else { + plugin = snd_pcm_plug_last(plug); + format = &plugin->dst_format; + } + v = plugin->buf_channels; + *channels = v; + if ((width = snd_pcm_format_physical_width(format->format)) < 0) + return width; + nchannels = format->channels; + snd_assert(plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || format->channels <= 1, return -ENXIO); + for (channel = 0; channel < nchannels; channel++, v++) { + v->frames = count; + v->enabled = 1; + v->wanted = (stream == SNDRV_PCM_STREAM_CAPTURE); + v->area.addr = buf; + v->area.first = channel * width; + v->area.step = nchannels * width; + } + return count; +} + +static int snd_pcm_plug_playback_channels_mask(snd_pcm_plug_t *plug, + bitset_t *client_vmask) +{ + snd_pcm_plugin_t *plugin = snd_pcm_plug_last(plug); + if (plugin == NULL) { + return 0; + } else { + int schannels = plugin->dst_format.channels; + bitset_t bs[bitset_size(schannels)]; + bitset_t *srcmask; + bitset_t *dstmask = bs; + int err; + bitset_one(dstmask, schannels); + if (plugin == NULL) { + bitset_and(client_vmask, dstmask, schannels); + return 0; + } + while (1) { + err = plugin->src_channels_mask(plugin, dstmask, &srcmask); + if (err < 0) + return err; + dstmask = srcmask; + if (plugin->prev == NULL) + break; + plugin = plugin->prev; + } + bitset_and(client_vmask, dstmask, plugin->src_format.channels); + return 0; + } +} + +static int snd_pcm_plug_playback_disable_useless_channels(snd_pcm_plug_t *plug, + snd_pcm_plugin_channel_t *src_channels) +{ + snd_pcm_plugin_t *plugin = snd_pcm_plug_first(plug); + unsigned int nchannels = plugin->src_format.channels; + bitset_t bs[bitset_size(nchannels)]; + bitset_t *srcmask = bs; + int err; + unsigned int channel; + for (channel = 0; channel < nchannels; channel++) { + if (src_channels[channel].enabled) + bitset_set(srcmask, channel); + else + bitset_reset(srcmask, channel); + } + err = snd_pcm_plug_playback_channels_mask(plug, srcmask); + if (err < 0) + return err; + for (channel = 0; channel < nchannels; channel++) { + if (!bitset_get(srcmask, channel)) + src_channels[channel].enabled = 0; + } + return 0; +} + +static int snd_pcm_plug_capture_disable_useless_channels(snd_pcm_plug_t *plug, + snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *client_channels) +{ + snd_pcm_plugin_t *plugin = snd_pcm_plug_last(plug); + unsigned int nchannels = plugin->dst_format.channels; + bitset_t bs[bitset_size(nchannels)]; + bitset_t *dstmask = bs; + bitset_t *srcmask; + int err; + unsigned int channel; + for (channel = 0; channel < nchannels; channel++) { + if (client_channels[channel].enabled) + bitset_set(dstmask, channel); + else + bitset_reset(dstmask, channel); + } + while (plugin) { + err = plugin->src_channels_mask(plugin, dstmask, &srcmask); + if (err < 0) + return err; + dstmask = srcmask; + plugin = plugin->prev; + } + plugin = snd_pcm_plug_first(plug); + nchannels = plugin->src_format.channels; + for (channel = 0; channel < nchannels; channel++) { + if (!bitset_get(dstmask, channel)) + src_channels[channel].enabled = 0; + } + return 0; +} + +snd_pcm_sframes_t snd_pcm_plug_write_transfer(snd_pcm_plug_t *plug, snd_pcm_plugin_channel_t *src_channels, snd_pcm_uframes_t size) +{ + snd_pcm_plugin_t *plugin, *next; + snd_pcm_plugin_channel_t *dst_channels; + int err; + snd_pcm_sframes_t frames = size; + + if ((err = snd_pcm_plug_playback_disable_useless_channels(plug, src_channels)) < 0) + return err; + + plugin = snd_pcm_plug_first(plug); + while (plugin && frames > 0) { + if ((next = plugin->next) != NULL) { + snd_pcm_sframes_t frames1 = frames; + if (plugin->dst_frames) + frames1 = plugin->dst_frames(plugin, frames); + if ((err = next->client_channels(next, frames1, &dst_channels)) < 0) { + return err; + } + if (err != frames1) { + frames = err; + if (plugin->src_frames) + frames = plugin->src_frames(plugin, frames1); + } + } else + dst_channels = NULL; + pdprintf("write plugin: %s, %li\n", plugin->name, frames); + if ((frames = plugin->transfer(plugin, src_channels, dst_channels, frames)) < 0) + return frames; + src_channels = dst_channels; + plugin = next; + } + return snd_pcm_plug_client_size(plug, frames); +} + +snd_pcm_sframes_t snd_pcm_plug_read_transfer(snd_pcm_plug_t *plug, snd_pcm_plugin_channel_t *dst_channels_final, snd_pcm_uframes_t size) +{ + snd_pcm_plugin_t *plugin, *next; + snd_pcm_plugin_channel_t *src_channels, *dst_channels; + snd_pcm_sframes_t frames = size; + int err; + + frames = snd_pcm_plug_slave_size(plug, frames); + if (frames < 0) + return frames; + + src_channels = NULL; + plugin = snd_pcm_plug_first(plug); + while (plugin && frames > 0) { + if ((next = plugin->next) != NULL) { + if ((err = plugin->client_channels(plugin, frames, &dst_channels)) < 0) { + return err; + } + frames = err; + if (!plugin->prev) { + if ((err = snd_pcm_plug_capture_disable_useless_channels(plug, dst_channels, dst_channels_final)) < 0) + return err; + } + } else { + dst_channels = dst_channels_final; + } + pdprintf("read plugin: %s, %li\n", plugin->name, frames); + if ((frames = plugin->transfer(plugin, src_channels, dst_channels, frames)) < 0) + return frames; + plugin = next; + src_channels = dst_channels; + } + return frames; +} + +int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_area, size_t dst_offset, + size_t samples, int format) +{ + /* FIXME: sub byte resolution and odd dst_offset */ + unsigned char *dst; + unsigned int dst_step; + int width; + const unsigned char *silence; + if (!dst_area->addr) + return 0; + dst = dst_area->addr + (dst_area->first + dst_area->step * dst_offset) / 8; + width = snd_pcm_format_physical_width(format); + if (width <= 0) + return -EINVAL; + if (dst_area->step == (unsigned int) width && width >= 8) + return snd_pcm_format_set_silence(format, dst, samples); + silence = snd_pcm_format_silence_64(format); + if (! silence) + return -EINVAL; + dst_step = dst_area->step / 8; + if (width == 4) { + /* Ima ADPCM */ + int dstbit = dst_area->first % 8; + int dstbit_step = dst_area->step % 8; + while (samples-- > 0) { + if (dstbit) + *dst &= 0xf0; + else + *dst &= 0x0f; + dst += dst_step; + dstbit += dstbit_step; + if (dstbit == 8) { + dst++; + dstbit = 0; + } + } + } else { + width /= 8; + while (samples-- > 0) { + memcpy(dst, silence, width); + dst += dst_step; + } + } + return 0; +} + +int snd_pcm_area_copy(const snd_pcm_channel_area_t *src_area, size_t src_offset, + const snd_pcm_channel_area_t *dst_area, size_t dst_offset, + size_t samples, int format) +{ + /* FIXME: sub byte resolution and odd dst_offset */ + char *src, *dst; + int width; + int src_step, dst_step; + src = src_area->addr + (src_area->first + src_area->step * src_offset) / 8; + if (!src_area->addr) + return snd_pcm_area_silence(dst_area, dst_offset, samples, format); + dst = dst_area->addr + (dst_area->first + dst_area->step * dst_offset) / 8; + if (!dst_area->addr) + return 0; + width = snd_pcm_format_physical_width(format); + if (width <= 0) + return -EINVAL; + if (src_area->step == (unsigned int) width && + dst_area->step == (unsigned int) width && width >= 8) { + size_t bytes = samples * width / 8; + memcpy(dst, src, bytes); + return 0; + } + src_step = src_area->step / 8; + dst_step = dst_area->step / 8; + if (width == 4) { + /* Ima ADPCM */ + int srcbit = src_area->first % 8; + int srcbit_step = src_area->step % 8; + int dstbit = dst_area->first % 8; + int dstbit_step = dst_area->step % 8; + while (samples-- > 0) { + unsigned char srcval; + if (srcbit) + srcval = *src & 0x0f; + else + srcval = (*src & 0xf0) >> 4; + if (dstbit) + *dst = (*dst & 0xf0) | srcval; + else + *dst = (*dst & 0x0f) | (srcval << 4); + src += src_step; + srcbit += srcbit_step; + if (srcbit == 8) { + src++; + srcbit = 0; + } + dst += dst_step; + dstbit += dstbit_step; + if (dstbit == 8) { + dst++; + dstbit = 0; + } + } + } else { + width /= 8; + while (samples-- > 0) { + memcpy(dst, src, width); + src += src_step; + dst += dst_step; + } + } + return 0; +} diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h new file mode 100644 index 000000000000..0f86ce477490 --- /dev/null +++ b/sound/core/oss/pcm_plugin.h @@ -0,0 +1,250 @@ +#ifndef __PCM_PLUGIN_H +#define __PCM_PLUGIN_H + +/* + * Digital Audio (Plugin interface) abstract layer + * Copyright (c) by Jaroslav Kysela + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef ATTRIBUTE_UNUSED +#define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#endif + +typedef unsigned int bitset_t; + +static inline size_t bitset_size(int nbits) +{ + return (nbits + sizeof(bitset_t) * 8 - 1) / (sizeof(bitset_t) * 8); +} + +static inline bitset_t *bitset_alloc(int nbits) +{ + return kcalloc(bitset_size(nbits), sizeof(bitset_t), GFP_KERNEL); +} + +static inline void bitset_set(bitset_t *bitmap, unsigned int pos) +{ + size_t bits = sizeof(*bitmap) * 8; + bitmap[pos / bits] |= 1 << (pos % bits); +} + +static inline void bitset_reset(bitset_t *bitmap, unsigned int pos) +{ + size_t bits = sizeof(*bitmap) * 8; + bitmap[pos / bits] &= ~(1 << (pos % bits)); +} + +static inline int bitset_get(bitset_t *bitmap, unsigned int pos) +{ + size_t bits = sizeof(*bitmap) * 8; + return !!(bitmap[pos / bits] & (1 << (pos % bits))); +} + +static inline void bitset_copy(bitset_t *dst, bitset_t *src, unsigned int nbits) +{ + memcpy(dst, src, bitset_size(nbits) * sizeof(bitset_t)); +} + +static inline void bitset_and(bitset_t *dst, bitset_t *bs, unsigned int nbits) +{ + bitset_t *end = dst + bitset_size(nbits); + while (dst < end) + *dst++ &= *bs++; +} + +static inline void bitset_or(bitset_t *dst, bitset_t *bs, unsigned int nbits) +{ + bitset_t *end = dst + bitset_size(nbits); + while (dst < end) + *dst++ |= *bs++; +} + +static inline void bitset_zero(bitset_t *dst, unsigned int nbits) +{ + bitset_t *end = dst + bitset_size(nbits); + while (dst < end) + *dst++ = 0; +} + +static inline void bitset_one(bitset_t *dst, unsigned int nbits) +{ + bitset_t *end = dst + bitset_size(nbits); + while (dst < end) + *dst++ = ~(bitset_t)0; +} + +#define snd_pcm_plug_t snd_pcm_substream_t +#define snd_pcm_plug_stream(plug) ((plug)->stream) + +typedef enum { + INIT = 0, + PREPARE = 1, +} snd_pcm_plugin_action_t; + +typedef struct _snd_pcm_channel_area { + void *addr; /* base address of channel samples */ + unsigned int first; /* offset to first sample in bits */ + unsigned int step; /* samples distance in bits */ +} snd_pcm_channel_area_t; + +typedef struct _snd_pcm_plugin_channel { + void *aptr; /* pointer to the allocated area */ + snd_pcm_channel_area_t area; + snd_pcm_uframes_t frames; /* allocated frames */ + unsigned int enabled:1; /* channel need to be processed */ + unsigned int wanted:1; /* channel is wanted */ +} snd_pcm_plugin_channel_t; + +typedef struct _snd_pcm_plugin_format { + int format; + unsigned int rate; + unsigned int channels; +} snd_pcm_plugin_format_t; + +struct _snd_pcm_plugin { + const char *name; /* plug-in name */ + int stream; + snd_pcm_plugin_format_t src_format; /* source format */ + snd_pcm_plugin_format_t dst_format; /* destination format */ + int src_width; /* sample width in bits */ + int dst_width; /* sample width in bits */ + int access; + snd_pcm_sframes_t (*src_frames)(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t dst_frames); + snd_pcm_sframes_t (*dst_frames)(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t src_frames); + snd_pcm_sframes_t (*client_channels)(snd_pcm_plugin_t *plugin, + snd_pcm_uframes_t frames, + snd_pcm_plugin_channel_t **channels); + int (*src_channels_mask)(snd_pcm_plugin_t *plugin, + bitset_t *dst_vmask, + bitset_t **src_vmask); + int (*dst_channels_mask)(snd_pcm_plugin_t *plugin, + bitset_t *src_vmask, + bitset_t **dst_vmask); + snd_pcm_sframes_t (*transfer)(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames); + int (*action)(snd_pcm_plugin_t *plugin, + snd_pcm_plugin_action_t action, + unsigned long data); + snd_pcm_plugin_t *prev; + snd_pcm_plugin_t *next; + snd_pcm_plug_t *plug; + void *private_data; + void (*private_free)(snd_pcm_plugin_t *plugin); + char *buf; + snd_pcm_uframes_t buf_frames; + snd_pcm_plugin_channel_t *buf_channels; + bitset_t *src_vmask; + bitset_t *dst_vmask; + char extra_data[0]; +}; + +int snd_pcm_plugin_build(snd_pcm_plug_t *handle, + const char *name, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + size_t extra, + snd_pcm_plugin_t **ret); +int snd_pcm_plugin_free(snd_pcm_plugin_t *plugin); +int snd_pcm_plugin_clear(snd_pcm_plugin_t **first); +int snd_pcm_plug_alloc(snd_pcm_plug_t *plug, snd_pcm_uframes_t frames); +snd_pcm_sframes_t snd_pcm_plug_client_size(snd_pcm_plug_t *handle, snd_pcm_uframes_t drv_size); +snd_pcm_sframes_t snd_pcm_plug_slave_size(snd_pcm_plug_t *handle, snd_pcm_uframes_t clt_size); + +#define FULL ROUTE_PLUGIN_RESOLUTION +#define HALF ROUTE_PLUGIN_RESOLUTION / 2 +typedef int route_ttable_entry_t; + +int snd_pcm_plugin_build_io(snd_pcm_plug_t *handle, + snd_pcm_hw_params_t *params, + snd_pcm_plugin_t **r_plugin); +int snd_pcm_plugin_build_linear(snd_pcm_plug_t *handle, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin); +int snd_pcm_plugin_build_mulaw(snd_pcm_plug_t *handle, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin); +int snd_pcm_plugin_build_rate(snd_pcm_plug_t *handle, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin); +int snd_pcm_plugin_build_route(snd_pcm_plug_t *handle, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + route_ttable_entry_t *ttable, + snd_pcm_plugin_t **r_plugin); +int snd_pcm_plugin_build_copy(snd_pcm_plug_t *handle, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin); + +int snd_pcm_plug_format_plugins(snd_pcm_plug_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_params_t *slave_params); + +int snd_pcm_plug_slave_format(int format, snd_mask_t *format_mask); + +int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin); + +snd_pcm_sframes_t snd_pcm_plug_write_transfer(snd_pcm_plug_t *handle, snd_pcm_plugin_channel_t *src_channels, snd_pcm_uframes_t size); +snd_pcm_sframes_t snd_pcm_plug_read_transfer(snd_pcm_plug_t *handle, snd_pcm_plugin_channel_t *dst_channels_final, snd_pcm_uframes_t size); + +snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(snd_pcm_plug_t *handle, + char *buf, snd_pcm_uframes_t count, + snd_pcm_plugin_channel_t **channels); + +snd_pcm_sframes_t snd_pcm_plugin_client_channels(snd_pcm_plugin_t *plugin, + snd_pcm_uframes_t frames, + snd_pcm_plugin_channel_t **channels); + +int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, size_t dst_offset, + size_t samples, int format); +int snd_pcm_area_copy(const snd_pcm_channel_area_t *src_channel, size_t src_offset, + const snd_pcm_channel_area_t *dst_channel, size_t dst_offset, + size_t samples, int format); + +void *snd_pcm_plug_buf_alloc(snd_pcm_plug_t *plug, snd_pcm_uframes_t size); +void snd_pcm_plug_buf_unlock(snd_pcm_plug_t *plug, void *ptr); +snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char *ptr, snd_pcm_uframes_t size, int in_kernel); +snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, snd_pcm_uframes_t size, int in_kernel); +snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel); +snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel); + + + +#define ROUTE_PLUGIN_RESOLUTION 16 + +int getput_index(int format); +int copy_index(int format); +int conv_index(int src_format, int dst_format); + +void zero_channel(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *dst_channel, + size_t samples); + +#ifdef PLUGIN_DEBUG +#define pdprintf( fmt, args... ) printk( "plugin: " fmt, ##args) +#else +#define pdprintf( fmt, args... ) +#endif + +#endif /* __PCM_PLUGIN_H */ diff --git a/sound/core/oss/plugin_ops.h b/sound/core/oss/plugin_ops.h new file mode 100644 index 000000000000..0607e9566084 --- /dev/null +++ b/sound/core/oss/plugin_ops.h @@ -0,0 +1,536 @@ +/* + * Plugin sample operators with fast switch + * Copyright (c) 2000 by Jaroslav Kysela + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + + +#define as_u8(ptr) (*(u_int8_t*)(ptr)) +#define as_u16(ptr) (*(u_int16_t*)(ptr)) +#define as_u32(ptr) (*(u_int32_t*)(ptr)) +#define as_u64(ptr) (*(u_int64_t*)(ptr)) +#define as_s8(ptr) (*(int8_t*)(ptr)) +#define as_s16(ptr) (*(int16_t*)(ptr)) +#define as_s32(ptr) (*(int32_t*)(ptr)) +#define as_s64(ptr) (*(int64_t*)(ptr)) + +#ifdef COPY_LABELS +static void *copy_labels[4] = { + &©_8, + &©_16, + &©_32, + &©_64 +}; +#endif + +#ifdef COPY_END +while(0) { +copy_8: as_s8(dst) = as_s8(src); goto COPY_END; +copy_16: as_s16(dst) = as_s16(src); goto COPY_END; +copy_32: as_s32(dst) = as_s32(src); goto COPY_END; +copy_64: as_s64(dst) = as_s64(src); goto COPY_END; +} +#endif + +#ifdef CONV_LABELS +/* src_wid src_endswap sign_toggle dst_wid dst_endswap */ +static void *conv_labels[4 * 2 * 2 * 4 * 2] = { + &&conv_xxx1_xxx1, /* 8h -> 8h */ + &&conv_xxx1_xxx1, /* 8h -> 8s */ + &&conv_xxx1_xx10, /* 8h -> 16h */ + &&conv_xxx1_xx01, /* 8h -> 16s */ + &&conv_xxx1_x100, /* 8h -> 24h */ + &&conv_xxx1_001x, /* 8h -> 24s */ + &&conv_xxx1_1000, /* 8h -> 32h */ + &&conv_xxx1_0001, /* 8h -> 32s */ + &&conv_xxx1_xxx9, /* 8h ^> 8h */ + &&conv_xxx1_xxx9, /* 8h ^> 8s */ + &&conv_xxx1_xx90, /* 8h ^> 16h */ + &&conv_xxx1_xx09, /* 8h ^> 16s */ + &&conv_xxx1_x900, /* 8h ^> 24h */ + &&conv_xxx1_009x, /* 8h ^> 24s */ + &&conv_xxx1_9000, /* 8h ^> 32h */ + &&conv_xxx1_0009, /* 8h ^> 32s */ + &&conv_xxx1_xxx1, /* 8s -> 8h */ + &&conv_xxx1_xxx1, /* 8s -> 8s */ + &&conv_xxx1_xx10, /* 8s -> 16h */ + &&conv_xxx1_xx01, /* 8s -> 16s */ + &&conv_xxx1_x100, /* 8s -> 24h */ + &&conv_xxx1_001x, /* 8s -> 24s */ + &&conv_xxx1_1000, /* 8s -> 32h */ + &&conv_xxx1_0001, /* 8s -> 32s */ + &&conv_xxx1_xxx9, /* 8s ^> 8h */ + &&conv_xxx1_xxx9, /* 8s ^> 8s */ + &&conv_xxx1_xx90, /* 8s ^> 16h */ + &&conv_xxx1_xx09, /* 8s ^> 16s */ + &&conv_xxx1_x900, /* 8s ^> 24h */ + &&conv_xxx1_009x, /* 8s ^> 24s */ + &&conv_xxx1_9000, /* 8s ^> 32h */ + &&conv_xxx1_0009, /* 8s ^> 32s */ + &&conv_xx12_xxx1, /* 16h -> 8h */ + &&conv_xx12_xxx1, /* 16h -> 8s */ + &&conv_xx12_xx12, /* 16h -> 16h */ + &&conv_xx12_xx21, /* 16h -> 16s */ + &&conv_xx12_x120, /* 16h -> 24h */ + &&conv_xx12_021x, /* 16h -> 24s */ + &&conv_xx12_1200, /* 16h -> 32h */ + &&conv_xx12_0021, /* 16h -> 32s */ + &&conv_xx12_xxx9, /* 16h ^> 8h */ + &&conv_xx12_xxx9, /* 16h ^> 8s */ + &&conv_xx12_xx92, /* 16h ^> 16h */ + &&conv_xx12_xx29, /* 16h ^> 16s */ + &&conv_xx12_x920, /* 16h ^> 24h */ + &&conv_xx12_029x, /* 16h ^> 24s */ + &&conv_xx12_9200, /* 16h ^> 32h */ + &&conv_xx12_0029, /* 16h ^> 32s */ + &&conv_xx12_xxx2, /* 16s -> 8h */ + &&conv_xx12_xxx2, /* 16s -> 8s */ + &&conv_xx12_xx21, /* 16s -> 16h */ + &&conv_xx12_xx12, /* 16s -> 16s */ + &&conv_xx12_x210, /* 16s -> 24h */ + &&conv_xx12_012x, /* 16s -> 24s */ + &&conv_xx12_2100, /* 16s -> 32h */ + &&conv_xx12_0012, /* 16s -> 32s */ + &&conv_xx12_xxxA, /* 16s ^> 8h */ + &&conv_xx12_xxxA, /* 16s ^> 8s */ + &&conv_xx12_xxA1, /* 16s ^> 16h */ + &&conv_xx12_xx1A, /* 16s ^> 16s */ + &&conv_xx12_xA10, /* 16s ^> 24h */ + &&conv_xx12_01Ax, /* 16s ^> 24s */ + &&conv_xx12_A100, /* 16s ^> 32h */ + &&conv_xx12_001A, /* 16s ^> 32s */ + &&conv_x123_xxx1, /* 24h -> 8h */ + &&conv_x123_xxx1, /* 24h -> 8s */ + &&conv_x123_xx12, /* 24h -> 16h */ + &&conv_x123_xx21, /* 24h -> 16s */ + &&conv_x123_x123, /* 24h -> 24h */ + &&conv_x123_321x, /* 24h -> 24s */ + &&conv_x123_1230, /* 24h -> 32h */ + &&conv_x123_0321, /* 24h -> 32s */ + &&conv_x123_xxx9, /* 24h ^> 8h */ + &&conv_x123_xxx9, /* 24h ^> 8s */ + &&conv_x123_xx92, /* 24h ^> 16h */ + &&conv_x123_xx29, /* 24h ^> 16s */ + &&conv_x123_x923, /* 24h ^> 24h */ + &&conv_x123_329x, /* 24h ^> 24s */ + &&conv_x123_9230, /* 24h ^> 32h */ + &&conv_x123_0329, /* 24h ^> 32s */ + &&conv_123x_xxx3, /* 24s -> 8h */ + &&conv_123x_xxx3, /* 24s -> 8s */ + &&conv_123x_xx32, /* 24s -> 16h */ + &&conv_123x_xx23, /* 24s -> 16s */ + &&conv_123x_x321, /* 24s -> 24h */ + &&conv_123x_123x, /* 24s -> 24s */ + &&conv_123x_3210, /* 24s -> 32h */ + &&conv_123x_0123, /* 24s -> 32s */ + &&conv_123x_xxxB, /* 24s ^> 8h */ + &&conv_123x_xxxB, /* 24s ^> 8s */ + &&conv_123x_xxB2, /* 24s ^> 16h */ + &&conv_123x_xx2B, /* 24s ^> 16s */ + &&conv_123x_xB21, /* 24s ^> 24h */ + &&conv_123x_12Bx, /* 24s ^> 24s */ + &&conv_123x_B210, /* 24s ^> 32h */ + &&conv_123x_012B, /* 24s ^> 32s */ + &&conv_1234_xxx1, /* 32h -> 8h */ + &&conv_1234_xxx1, /* 32h -> 8s */ + &&conv_1234_xx12, /* 32h -> 16h */ + &&conv_1234_xx21, /* 32h -> 16s */ + &&conv_1234_x123, /* 32h -> 24h */ + &&conv_1234_321x, /* 32h -> 24s */ + &&conv_1234_1234, /* 32h -> 32h */ + &&conv_1234_4321, /* 32h -> 32s */ + &&conv_1234_xxx9, /* 32h ^> 8h */ + &&conv_1234_xxx9, /* 32h ^> 8s */ + &&conv_1234_xx92, /* 32h ^> 16h */ + &&conv_1234_xx29, /* 32h ^> 16s */ + &&conv_1234_x923, /* 32h ^> 24h */ + &&conv_1234_329x, /* 32h ^> 24s */ + &&conv_1234_9234, /* 32h ^> 32h */ + &&conv_1234_4329, /* 32h ^> 32s */ + &&conv_1234_xxx4, /* 32s -> 8h */ + &&conv_1234_xxx4, /* 32s -> 8s */ + &&conv_1234_xx43, /* 32s -> 16h */ + &&conv_1234_xx34, /* 32s -> 16s */ + &&conv_1234_x432, /* 32s -> 24h */ + &&conv_1234_234x, /* 32s -> 24s */ + &&conv_1234_4321, /* 32s -> 32h */ + &&conv_1234_1234, /* 32s -> 32s */ + &&conv_1234_xxxC, /* 32s ^> 8h */ + &&conv_1234_xxxC, /* 32s ^> 8s */ + &&conv_1234_xxC3, /* 32s ^> 16h */ + &&conv_1234_xx3C, /* 32s ^> 16s */ + &&conv_1234_xC32, /* 32s ^> 24h */ + &&conv_1234_23Cx, /* 32s ^> 24s */ + &&conv_1234_C321, /* 32s ^> 32h */ + &&conv_1234_123C, /* 32s ^> 32s */ +}; +#endif + +#ifdef CONV_END +while(0) { +conv_xxx1_xxx1: as_u8(dst) = as_u8(src); goto CONV_END; +conv_xxx1_xx10: as_u16(dst) = (u_int16_t)as_u8(src) << 8; goto CONV_END; +conv_xxx1_xx01: as_u16(dst) = (u_int16_t)as_u8(src); goto CONV_END; +conv_xxx1_x100: as_u32(dst) = (u_int32_t)as_u8(src) << 16; goto CONV_END; +conv_xxx1_001x: as_u32(dst) = (u_int32_t)as_u8(src) << 8; goto CONV_END; +conv_xxx1_1000: as_u32(dst) = (u_int32_t)as_u8(src) << 24; goto CONV_END; +conv_xxx1_0001: as_u32(dst) = (u_int32_t)as_u8(src); goto CONV_END; +conv_xxx1_xxx9: as_u8(dst) = as_u8(src) ^ 0x80; goto CONV_END; +conv_xxx1_xx90: as_u16(dst) = (u_int16_t)(as_u8(src) ^ 0x80) << 8; goto CONV_END; +conv_xxx1_xx09: as_u16(dst) = (u_int16_t)(as_u8(src) ^ 0x80); goto CONV_END; +conv_xxx1_x900: as_u32(dst) = (u_int32_t)(as_u8(src) ^ 0x80) << 16; goto CONV_END; +conv_xxx1_009x: as_u32(dst) = (u_int32_t)(as_u8(src) ^ 0x80) << 8; goto CONV_END; +conv_xxx1_9000: as_u32(dst) = (u_int32_t)(as_u8(src) ^ 0x80) << 24; goto CONV_END; +conv_xxx1_0009: as_u32(dst) = (u_int32_t)(as_u8(src) ^ 0x80); goto CONV_END; +conv_xx12_xxx1: as_u8(dst) = as_u16(src) >> 8; goto CONV_END; +conv_xx12_xx12: as_u16(dst) = as_u16(src); goto CONV_END; +conv_xx12_xx21: as_u16(dst) = swab16(as_u16(src)); goto CONV_END; +conv_xx12_x120: as_u32(dst) = (u_int32_t)as_u16(src) << 8; goto CONV_END; +conv_xx12_021x: as_u32(dst) = (u_int32_t)swab16(as_u16(src)) << 8; goto CONV_END; +conv_xx12_1200: as_u32(dst) = (u_int32_t)as_u16(src) << 16; goto CONV_END; +conv_xx12_0021: as_u32(dst) = (u_int32_t)swab16(as_u16(src)); goto CONV_END; +conv_xx12_xxx9: as_u8(dst) = (as_u16(src) >> 8) ^ 0x80; goto CONV_END; +conv_xx12_xx92: as_u16(dst) = as_u16(src) ^ 0x8000; goto CONV_END; +conv_xx12_xx29: as_u16(dst) = swab16(as_u16(src)) ^ 0x80; goto CONV_END; +conv_xx12_x920: as_u32(dst) = (u_int32_t)(as_u16(src) ^ 0x8000) << 8; goto CONV_END; +conv_xx12_029x: as_u32(dst) = (u_int32_t)(swab16(as_u16(src)) ^ 0x80) << 8; goto CONV_END; +conv_xx12_9200: as_u32(dst) = (u_int32_t)(as_u16(src) ^ 0x8000) << 16; goto CONV_END; +conv_xx12_0029: as_u32(dst) = (u_int32_t)(swab16(as_u16(src)) ^ 0x80); goto CONV_END; +conv_xx12_xxx2: as_u8(dst) = as_u16(src) & 0xff; goto CONV_END; +conv_xx12_x210: as_u32(dst) = (u_int32_t)swab16(as_u16(src)) << 8; goto CONV_END; +conv_xx12_012x: as_u32(dst) = (u_int32_t)as_u16(src) << 8; goto CONV_END; +conv_xx12_2100: as_u32(dst) = (u_int32_t)swab16(as_u16(src)) << 16; goto CONV_END; +conv_xx12_0012: as_u32(dst) = (u_int32_t)as_u16(src); goto CONV_END; +conv_xx12_xxxA: as_u8(dst) = (as_u16(src) ^ 0x80) & 0xff; goto CONV_END; +conv_xx12_xxA1: as_u16(dst) = swab16(as_u16(src) ^ 0x80); goto CONV_END; +conv_xx12_xx1A: as_u16(dst) = as_u16(src) ^ 0x80; goto CONV_END; +conv_xx12_xA10: as_u32(dst) = (u_int32_t)swab16(as_u16(src) ^ 0x80) << 8; goto CONV_END; +conv_xx12_01Ax: as_u32(dst) = (u_int32_t)(as_u16(src) ^ 0x80) << 8; goto CONV_END; +conv_xx12_A100: as_u32(dst) = (u_int32_t)swab16(as_u16(src) ^ 0x80) << 16; goto CONV_END; +conv_xx12_001A: as_u32(dst) = (u_int32_t)(as_u16(src) ^ 0x80); goto CONV_END; +conv_x123_xxx1: as_u8(dst) = as_u32(src) >> 16; goto CONV_END; +conv_x123_xx12: as_u16(dst) = as_u32(src) >> 8; goto CONV_END; +conv_x123_xx21: as_u16(dst) = swab16(as_u32(src) >> 8); goto CONV_END; +conv_x123_x123: as_u32(dst) = as_u32(src); goto CONV_END; +conv_x123_321x: as_u32(dst) = swab32(as_u32(src)); goto CONV_END; +conv_x123_1230: as_u32(dst) = as_u32(src) << 8; goto CONV_END; +conv_x123_0321: as_u32(dst) = swab32(as_u32(src)) >> 8; goto CONV_END; +conv_x123_xxx9: as_u8(dst) = (as_u32(src) >> 16) ^ 0x80; goto CONV_END; +conv_x123_xx92: as_u16(dst) = (as_u32(src) >> 8) ^ 0x8000; goto CONV_END; +conv_x123_xx29: as_u16(dst) = swab16(as_u32(src) >> 8) ^ 0x80; goto CONV_END; +conv_x123_x923: as_u32(dst) = as_u32(src) ^ 0x800000; goto CONV_END; +conv_x123_329x: as_u32(dst) = swab32(as_u32(src)) ^ 0x8000; goto CONV_END; +conv_x123_9230: as_u32(dst) = (as_u32(src) ^ 0x800000) << 8; goto CONV_END; +conv_x123_0329: as_u32(dst) = (swab32(as_u32(src)) >> 8) ^ 0x80; goto CONV_END; +conv_123x_xxx3: as_u8(dst) = (as_u32(src) >> 8) & 0xff; goto CONV_END; +conv_123x_xx32: as_u16(dst) = swab16(as_u32(src) >> 8); goto CONV_END; +conv_123x_xx23: as_u16(dst) = (as_u32(src) >> 8) & 0xffff; goto CONV_END; +conv_123x_x321: as_u32(dst) = swab32(as_u32(src)); goto CONV_END; +conv_123x_123x: as_u32(dst) = as_u32(src); goto CONV_END; +conv_123x_3210: as_u32(dst) = swab32(as_u32(src)) << 8; goto CONV_END; +conv_123x_0123: as_u32(dst) = as_u32(src) >> 8; goto CONV_END; +conv_123x_xxxB: as_u8(dst) = ((as_u32(src) >> 8) & 0xff) ^ 0x80; goto CONV_END; +conv_123x_xxB2: as_u16(dst) = swab16((as_u32(src) >> 8) ^ 0x80); goto CONV_END; +conv_123x_xx2B: as_u16(dst) = ((as_u32(src) >> 8) & 0xffff) ^ 0x80; goto CONV_END; +conv_123x_xB21: as_u32(dst) = swab32(as_u32(src)) ^ 0x800000; goto CONV_END; +conv_123x_12Bx: as_u32(dst) = as_u32(src) ^ 0x8000; goto CONV_END; +conv_123x_B210: as_u32(dst) = swab32(as_u32(src) ^ 0x8000) << 8; goto CONV_END; +conv_123x_012B: as_u32(dst) = (as_u32(src) >> 8) ^ 0x80; goto CONV_END; +conv_1234_xxx1: as_u8(dst) = as_u32(src) >> 24; goto CONV_END; +conv_1234_xx12: as_u16(dst) = as_u32(src) >> 16; goto CONV_END; +conv_1234_xx21: as_u16(dst) = swab16(as_u32(src) >> 16); goto CONV_END; +conv_1234_x123: as_u32(dst) = as_u32(src) >> 8; goto CONV_END; +conv_1234_321x: as_u32(dst) = swab32(as_u32(src)) << 8; goto CONV_END; +conv_1234_1234: as_u32(dst) = as_u32(src); goto CONV_END; +conv_1234_4321: as_u32(dst) = swab32(as_u32(src)); goto CONV_END; +conv_1234_xxx9: as_u8(dst) = (as_u32(src) >> 24) ^ 0x80; goto CONV_END; +conv_1234_xx92: as_u16(dst) = (as_u32(src) >> 16) ^ 0x8000; goto CONV_END; +conv_1234_xx29: as_u16(dst) = swab16(as_u32(src) >> 16) ^ 0x80; goto CONV_END; +conv_1234_x923: as_u32(dst) = (as_u32(src) >> 8) ^ 0x800000; goto CONV_END; +conv_1234_329x: as_u32(dst) = (swab32(as_u32(src)) ^ 0x80) << 8; goto CONV_END; +conv_1234_9234: as_u32(dst) = as_u32(src) ^ 0x80000000; goto CONV_END; +conv_1234_4329: as_u32(dst) = swab32(as_u32(src)) ^ 0x80; goto CONV_END; +conv_1234_xxx4: as_u8(dst) = as_u32(src) & 0xff; goto CONV_END; +conv_1234_xx43: as_u16(dst) = swab16(as_u32(src)); goto CONV_END; +conv_1234_xx34: as_u16(dst) = as_u32(src) & 0xffff; goto CONV_END; +conv_1234_x432: as_u32(dst) = swab32(as_u32(src)) >> 8; goto CONV_END; +conv_1234_234x: as_u32(dst) = as_u32(src) << 8; goto CONV_END; +conv_1234_xxxC: as_u8(dst) = (as_u32(src) & 0xff) ^ 0x80; goto CONV_END; +conv_1234_xxC3: as_u16(dst) = swab16(as_u32(src) ^ 0x80); goto CONV_END; +conv_1234_xx3C: as_u16(dst) = (as_u32(src) & 0xffff) ^ 0x80; goto CONV_END; +conv_1234_xC32: as_u32(dst) = (swab32(as_u32(src)) >> 8) ^ 0x800000; goto CONV_END; +conv_1234_23Cx: as_u32(dst) = (as_u32(src) ^ 0x80) << 8; goto CONV_END; +conv_1234_C321: as_u32(dst) = swab32(as_u32(src) ^ 0x80); goto CONV_END; +conv_1234_123C: as_u32(dst) = as_u32(src) ^ 0x80; goto CONV_END; +} +#endif + +#ifdef GET_S16_LABELS +/* src_wid src_endswap unsigned */ +static void *get_s16_labels[4 * 2 * 2] = { + &&get_s16_xxx1_xx10, /* 8h -> 16h */ + &&get_s16_xxx1_xx90, /* 8h ^> 16h */ + &&get_s16_xxx1_xx10, /* 8s -> 16h */ + &&get_s16_xxx1_xx90, /* 8s ^> 16h */ + &&get_s16_xx12_xx12, /* 16h -> 16h */ + &&get_s16_xx12_xx92, /* 16h ^> 16h */ + &&get_s16_xx12_xx21, /* 16s -> 16h */ + &&get_s16_xx12_xxA1, /* 16s ^> 16h */ + &&get_s16_x123_xx12, /* 24h -> 16h */ + &&get_s16_x123_xx92, /* 24h ^> 16h */ + &&get_s16_123x_xx32, /* 24s -> 16h */ + &&get_s16_123x_xxB2, /* 24s ^> 16h */ + &&get_s16_1234_xx12, /* 32h -> 16h */ + &&get_s16_1234_xx92, /* 32h ^> 16h */ + &&get_s16_1234_xx43, /* 32s -> 16h */ + &&get_s16_1234_xxC3, /* 32s ^> 16h */ +}; +#endif + +#ifdef GET_S16_END +while(0) { +get_s16_xxx1_xx10: sample = (u_int16_t)as_u8(src) << 8; goto GET_S16_END; +get_s16_xxx1_xx90: sample = (u_int16_t)(as_u8(src) ^ 0x80) << 8; goto GET_S16_END; +get_s16_xx12_xx12: sample = as_u16(src); goto GET_S16_END; +get_s16_xx12_xx92: sample = as_u16(src) ^ 0x8000; goto GET_S16_END; +get_s16_xx12_xx21: sample = swab16(as_u16(src)); goto GET_S16_END; +get_s16_xx12_xxA1: sample = swab16(as_u16(src) ^ 0x80); goto GET_S16_END; +get_s16_x123_xx12: sample = as_u32(src) >> 8; goto GET_S16_END; +get_s16_x123_xx92: sample = (as_u32(src) >> 8) ^ 0x8000; goto GET_S16_END; +get_s16_123x_xx32: sample = swab16(as_u32(src) >> 8); goto GET_S16_END; +get_s16_123x_xxB2: sample = swab16((as_u32(src) >> 8) ^ 0x8000); goto GET_S16_END; +get_s16_1234_xx12: sample = as_u32(src) >> 16; goto GET_S16_END; +get_s16_1234_xx92: sample = (as_u32(src) >> 16) ^ 0x8000; goto GET_S16_END; +get_s16_1234_xx43: sample = swab16(as_u32(src)); goto GET_S16_END; +get_s16_1234_xxC3: sample = swab16(as_u32(src) ^ 0x80); goto GET_S16_END; +} +#endif + +#ifdef PUT_S16_LABELS +/* dst_wid dst_endswap unsigned */ +static void *put_s16_labels[4 * 2 * 2] = { + &&put_s16_xx12_xxx1, /* 16h -> 8h */ + &&put_s16_xx12_xxx9, /* 16h ^> 8h */ + &&put_s16_xx12_xxx1, /* 16h -> 8s */ + &&put_s16_xx12_xxx9, /* 16h ^> 8s */ + &&put_s16_xx12_xx12, /* 16h -> 16h */ + &&put_s16_xx12_xx92, /* 16h ^> 16h */ + &&put_s16_xx12_xx21, /* 16h -> 16s */ + &&put_s16_xx12_xx29, /* 16h ^> 16s */ + &&put_s16_xx12_x120, /* 16h -> 24h */ + &&put_s16_xx12_x920, /* 16h ^> 24h */ + &&put_s16_xx12_021x, /* 16h -> 24s */ + &&put_s16_xx12_029x, /* 16h ^> 24s */ + &&put_s16_xx12_1200, /* 16h -> 32h */ + &&put_s16_xx12_9200, /* 16h ^> 32h */ + &&put_s16_xx12_0021, /* 16h -> 32s */ + &&put_s16_xx12_0029, /* 16h ^> 32s */ +}; +#endif + +#ifdef PUT_S16_END +while (0) { +put_s16_xx12_xxx1: as_u8(dst) = sample >> 8; goto PUT_S16_END; +put_s16_xx12_xxx9: as_u8(dst) = (sample >> 8) ^ 0x80; goto PUT_S16_END; +put_s16_xx12_xx12: as_u16(dst) = sample; goto PUT_S16_END; +put_s16_xx12_xx92: as_u16(dst) = sample ^ 0x8000; goto PUT_S16_END; +put_s16_xx12_xx21: as_u16(dst) = swab16(sample); goto PUT_S16_END; +put_s16_xx12_xx29: as_u16(dst) = swab16(sample) ^ 0x80; goto PUT_S16_END; +put_s16_xx12_x120: as_u32(dst) = (u_int32_t)sample << 8; goto PUT_S16_END; +put_s16_xx12_x920: as_u32(dst) = (u_int32_t)(sample ^ 0x8000) << 8; goto PUT_S16_END; +put_s16_xx12_021x: as_u32(dst) = (u_int32_t)swab16(sample) << 8; goto PUT_S16_END; +put_s16_xx12_029x: as_u32(dst) = (u_int32_t)(swab16(sample) ^ 0x80) << 8; goto PUT_S16_END; +put_s16_xx12_1200: as_u32(dst) = (u_int32_t)sample << 16; goto PUT_S16_END; +put_s16_xx12_9200: as_u32(dst) = (u_int32_t)(sample ^ 0x8000) << 16; goto PUT_S16_END; +put_s16_xx12_0021: as_u32(dst) = (u_int32_t)swab16(sample); goto PUT_S16_END; +put_s16_xx12_0029: as_u32(dst) = (u_int32_t)swab16(sample) ^ 0x80; goto PUT_S16_END; +} +#endif + +#if 0 +#ifdef GET32_LABELS +/* src_wid src_endswap unsigned */ +static void *get32_labels[4 * 2 * 2] = { + &&get32_xxx1_1000, /* 8h -> 32h */ + &&get32_xxx1_9000, /* 8h ^> 32h */ + &&get32_xxx1_1000, /* 8s -> 32h */ + &&get32_xxx1_9000, /* 8s ^> 32h */ + &&get32_xx12_1200, /* 16h -> 32h */ + &&get32_xx12_9200, /* 16h ^> 32h */ + &&get32_xx12_2100, /* 16s -> 32h */ + &&get32_xx12_A100, /* 16s ^> 32h */ + &&get32_x123_1230, /* 24h -> 32h */ + &&get32_x123_9230, /* 24h ^> 32h */ + &&get32_123x_3210, /* 24s -> 32h */ + &&get32_123x_B210, /* 24s ^> 32h */ + &&get32_1234_1234, /* 32h -> 32h */ + &&get32_1234_9234, /* 32h ^> 32h */ + &&get32_1234_4321, /* 32s -> 32h */ + &&get32_1234_C321, /* 32s ^> 32h */ +}; +#endif + +#ifdef GET32_END +while (0) { +get32_xxx1_1000: sample = (u_int32_t)as_u8(src) << 24; goto GET32_END; +get32_xxx1_9000: sample = (u_int32_t)(as_u8(src) ^ 0x80) << 24; goto GET32_END; +get32_xx12_1200: sample = (u_int32_t)as_u16(src) << 16; goto GET32_END; +get32_xx12_9200: sample = (u_int32_t)(as_u16(src) ^ 0x8000) << 16; goto GET32_END; +get32_xx12_2100: sample = (u_int32_t)swab16(as_u16(src)) << 16; goto GET32_END; +get32_xx12_A100: sample = (u_int32_t)swab16(as_u16(src) ^ 0x80) << 16; goto GET32_END; +get32_x123_1230: sample = as_u32(src) << 8; goto GET32_END; +get32_x123_9230: sample = (as_u32(src) << 8) ^ 0x80000000; goto GET32_END; +get32_123x_3210: sample = swab32(as_u32(src) >> 8); goto GET32_END; +get32_123x_B210: sample = swab32((as_u32(src) >> 8) ^ 0x80); goto GET32_END; +get32_1234_1234: sample = as_u32(src); goto GET32_END; +get32_1234_9234: sample = as_u32(src) ^ 0x80000000; goto GET32_END; +get32_1234_4321: sample = swab32(as_u32(src)); goto GET32_END; +get32_1234_C321: sample = swab32(as_u32(src) ^ 0x80); goto GET32_END; +} +#endif +#endif + +#ifdef PUT_U32_LABELS +/* dst_wid dst_endswap unsigned */ +static void *put_u32_labels[4 * 2 * 2] = { + &&put_u32_1234_xxx9, /* u32h -> s8h */ + &&put_u32_1234_xxx1, /* u32h -> u8h */ + &&put_u32_1234_xxx9, /* u32h -> s8s */ + &&put_u32_1234_xxx1, /* u32h -> u8s */ + &&put_u32_1234_xx92, /* u32h -> s16h */ + &&put_u32_1234_xx12, /* u32h -> u16h */ + &&put_u32_1234_xx29, /* u32h -> s16s */ + &&put_u32_1234_xx21, /* u32h -> u16s */ + &&put_u32_1234_x923, /* u32h -> s24h */ + &&put_u32_1234_x123, /* u32h -> u24h */ + &&put_u32_1234_329x, /* u32h -> s24s */ + &&put_u32_1234_321x, /* u32h -> u24s */ + &&put_u32_1234_9234, /* u32h -> s32h */ + &&put_u32_1234_1234, /* u32h -> u32h */ + &&put_u32_1234_4329, /* u32h -> s32s */ + &&put_u32_1234_4321, /* u32h -> u32s */ +}; +#endif + +#ifdef PUT_U32_END +while (0) { +put_u32_1234_xxx1: as_u8(dst) = sample >> 24; goto PUT_U32_END; +put_u32_1234_xxx9: as_u8(dst) = (sample >> 24) ^ 0x80; goto PUT_U32_END; +put_u32_1234_xx12: as_u16(dst) = sample >> 16; goto PUT_U32_END; +put_u32_1234_xx92: as_u16(dst) = (sample >> 16) ^ 0x8000; goto PUT_U32_END; +put_u32_1234_xx21: as_u16(dst) = swab16(sample >> 16); goto PUT_U32_END; +put_u32_1234_xx29: as_u16(dst) = swab16(sample >> 16) ^ 0x80; goto PUT_U32_END; +put_u32_1234_x123: as_u32(dst) = sample >> 8; goto PUT_U32_END; +put_u32_1234_x923: as_u32(dst) = (sample >> 8) ^ 0x800000; goto PUT_U32_END; +put_u32_1234_321x: as_u32(dst) = swab32(sample) << 8; goto PUT_U32_END; +put_u32_1234_329x: as_u32(dst) = (swab32(sample) ^ 0x80) << 8; goto PUT_U32_END; +put_u32_1234_1234: as_u32(dst) = sample; goto PUT_U32_END; +put_u32_1234_9234: as_u32(dst) = sample ^ 0x80000000; goto PUT_U32_END; +put_u32_1234_4321: as_u32(dst) = swab32(sample); goto PUT_U32_END; +put_u32_1234_4329: as_u32(dst) = swab32(sample) ^ 0x80; goto PUT_U32_END; +} +#endif + +#ifdef GET_U_LABELS +/* width endswap unsigned*/ +static void *get_u_labels[4 * 2 * 2] = { + &&get_u_s8, /* s8 -> u8 */ + &&get_u_u8, /* u8 -> u8 */ + &&get_u_s8, /* s8 -> u8 */ + &&get_u_u8, /* u8 -> u8 */ + &&get_u_s16h, /* s16h -> u16h */ + &&get_u_u16h, /* u16h -> u16h */ + &&get_u_s16s, /* s16s -> u16h */ + &&get_u_u16s, /* u16s -> u16h */ + &&get_u_s24h, /* s24h -> u32h */ + &&get_u_u24h, /* u24h -> u32h */ + &&get_u_s24s, /* s24s -> u32h */ + &&get_u_u24s, /* u24s -> u32h */ + &&get_u_s32h, /* s32h -> u32h */ + &&get_u_u32h, /* u32h -> u32h */ + &&get_u_s32s, /* s32s -> u32h */ + &&get_u_u32s, /* u32s -> u32h */ +}; +#endif + +#ifdef GET_U_END +while (0) { +get_u_s8: sample = as_u8(src) ^ 0x80; goto GET_U_END; +get_u_u8: sample = as_u8(src); goto GET_U_END; +get_u_s16h: sample = as_u16(src) ^ 0x8000; goto GET_U_END; +get_u_u16h: sample = as_u16(src); goto GET_U_END; +get_u_s16s: sample = swab16(as_u16(src) ^ 0x80); goto GET_U_END; +get_u_u16s: sample = swab16(as_u16(src)); goto GET_U_END; +get_u_s24h: sample = (as_u32(src) ^ 0x800000); goto GET_U_END; +get_u_u24h: sample = as_u32(src); goto GET_U_END; +get_u_s24s: sample = swab32(as_u32(src) ^ 0x800000); goto GET_U_END; +get_u_u24s: sample = swab32(as_u32(src)); goto GET_U_END; +get_u_s32h: sample = as_u32(src) ^ 0x80000000; goto GET_U_END; +get_u_u32h: sample = as_u32(src); goto GET_U_END; +get_u_s32s: sample = swab32(as_u32(src) ^ 0x80); goto GET_U_END; +get_u_u32s: sample = swab32(as_u32(src)); goto GET_U_END; +} +#endif + +#if 0 +#ifdef PUT_LABELS +/* width endswap unsigned */ +static void *put_labels[4 * 2 * 2] = { + &&put_s8, /* s8 -> s8 */ + &&put_u8, /* u8 -> s8 */ + &&put_s8, /* s8 -> s8 */ + &&put_u8, /* u8 -> s8 */ + &&put_s16h, /* s16h -> s16h */ + &&put_u16h, /* u16h -> s16h */ + &&put_s16s, /* s16s -> s16h */ + &&put_u16s, /* u16s -> s16h */ + &&put_s24h, /* s24h -> s32h */ + &&put_u24h, /* u24h -> s32h */ + &&put_s24s, /* s24s -> s32h */ + &&put_u24s, /* u24s -> s32h */ + &&put_s32h, /* s32h -> s32h */ + &&put_u32h, /* u32h -> s32h */ + &&put_s32s, /* s32s -> s32h */ + &&put_u32s, /* u32s -> s32h */ +}; +#endif + +#ifdef PUT_END +put_s8: as_s8(dst) = sample; goto PUT_END; +put_u8: as_u8(dst) = sample ^ 0x80; goto PUT_END; +put_s16h: as_s16(dst) = sample; goto PUT_END; +put_u16h: as_u16(dst) = sample ^ 0x8000; goto PUT_END; +put_s16s: as_s16(dst) = swab16(sample); goto PUT_END; +put_u16s: as_u16(dst) = swab16(sample ^ 0x80); goto PUT_END; +put_s24h: as_s24(dst) = sample & 0xffffff; goto PUT_END; +put_u24h: as_u24(dst) = sample ^ 0x80000000; goto PUT_END; +put_s24s: as_s24(dst) = swab32(sample & 0xffffff); goto PUT_END; +put_u24s: as_u24(dst) = swab32(sample ^ 0x80); goto PUT_END; +put_s32h: as_s32(dst) = sample; goto PUT_END; +put_u32h: as_u32(dst) = sample ^ 0x80000000; goto PUT_END; +put_s32s: as_s32(dst) = swab32(sample); goto PUT_END; +put_u32s: as_u32(dst) = swab32(sample ^ 0x80); goto PUT_END; +#endif +#endif + +#undef as_u8 +#undef as_u16 +#undef as_u32 +#undef as_s8 +#undef as_s16 +#undef as_s32 diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c new file mode 100644 index 000000000000..1096ec186714 --- /dev/null +++ b/sound/core/oss/rate.c @@ -0,0 +1,378 @@ +/* + * Rate conversion Plug-In + * Copyright (c) 1999 by Jaroslav Kysela + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include "pcm_plugin.h" + +#define SHIFT 11 +#define BITS (1<extra_data; + data->pos = 0; + for (channel = 0; channel < plugin->src_format.channels; channel++) { + data->channels[channel].last_S1 = 0; + data->channels[channel].last_S2 = 0; + } +} + +static void resample_expand(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + int src_frames, int dst_frames) +{ + unsigned int pos = 0; + signed int val; + signed short S1, S2; + char *src, *dst; + unsigned int channel; + int src_step, dst_step; + int src_frames1, dst_frames1; + rate_t *data = (rate_t *)plugin->extra_data; + rate_channel_t *rchannels = data->channels; + +#define GET_S16_LABELS +#define PUT_S16_LABELS +#include "plugin_ops.h" +#undef GET_S16_LABELS +#undef PUT_S16_LABELS + void *get = get_s16_labels[data->get]; + void *put = put_s16_labels[data->put]; + signed short sample = 0; + + for (channel = 0; channel < plugin->src_format.channels; channel++) { + pos = data->pos; + S1 = rchannels->last_S1; + S2 = rchannels->last_S2; + if (!src_channels[channel].enabled) { + if (dst_channels[channel].wanted) + snd_pcm_area_silence(&dst_channels[channel].area, 0, dst_frames, plugin->dst_format.format); + dst_channels[channel].enabled = 0; + continue; + } + dst_channels[channel].enabled = 1; + src = (char *)src_channels[channel].area.addr + src_channels[channel].area.first / 8; + dst = (char *)dst_channels[channel].area.addr + dst_channels[channel].area.first / 8; + src_step = src_channels[channel].area.step / 8; + dst_step = dst_channels[channel].area.step / 8; + src_frames1 = src_frames; + dst_frames1 = dst_frames; + while (dst_frames1-- > 0) { + if (pos & ~R_MASK) { + pos &= R_MASK; + S1 = S2; + if (src_frames1-- > 0) { + goto *get; +#define GET_S16_END after_get +#include "plugin_ops.h" +#undef GET_S16_END + after_get: + S2 = sample; + src += src_step; + } + } + val = S1 + ((S2 - S1) * (signed int)pos) / BITS; + if (val < -32768) + val = -32768; + else if (val > 32767) + val = 32767; + sample = val; + goto *put; +#define PUT_S16_END after_put +#include "plugin_ops.h" +#undef PUT_S16_END + after_put: + dst += dst_step; + pos += data->pitch; + } + rchannels->last_S1 = S1; + rchannels->last_S2 = S2; + rchannels++; + } + data->pos = pos; +} + +static void resample_shrink(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + int src_frames, int dst_frames) +{ + unsigned int pos = 0; + signed int val; + signed short S1, S2; + char *src, *dst; + unsigned int channel; + int src_step, dst_step; + int src_frames1, dst_frames1; + rate_t *data = (rate_t *)plugin->extra_data; + rate_channel_t *rchannels = data->channels; + +#define GET_S16_LABELS +#define PUT_S16_LABELS +#include "plugin_ops.h" +#undef GET_S16_LABELS +#undef PUT_S16_LABELS + void *get = get_s16_labels[data->get]; + void *put = put_s16_labels[data->put]; + signed short sample = 0; + + for (channel = 0; channel < plugin->src_format.channels; ++channel) { + pos = data->pos; + S1 = rchannels->last_S1; + S2 = rchannels->last_S2; + if (!src_channels[channel].enabled) { + if (dst_channels[channel].wanted) + snd_pcm_area_silence(&dst_channels[channel].area, 0, dst_frames, plugin->dst_format.format); + dst_channels[channel].enabled = 0; + continue; + } + dst_channels[channel].enabled = 1; + src = (char *)src_channels[channel].area.addr + src_channels[channel].area.first / 8; + dst = (char *)dst_channels[channel].area.addr + dst_channels[channel].area.first / 8; + src_step = src_channels[channel].area.step / 8; + dst_step = dst_channels[channel].area.step / 8; + src_frames1 = src_frames; + dst_frames1 = dst_frames; + while (dst_frames1 > 0) { + S1 = S2; + if (src_frames1-- > 0) { + goto *get; +#define GET_S16_END after_get +#include "plugin_ops.h" +#undef GET_S16_END + after_get: + S2 = sample; + src += src_step; + } + if (pos & ~R_MASK) { + pos &= R_MASK; + val = S1 + ((S2 - S1) * (signed int)pos) / BITS; + if (val < -32768) + val = -32768; + else if (val > 32767) + val = 32767; + sample = val; + goto *put; +#define PUT_S16_END after_put +#include "plugin_ops.h" +#undef PUT_S16_END + after_put: + dst += dst_step; + dst_frames1--; + } + pos += data->pitch; + } + rchannels->last_S1 = S1; + rchannels->last_S2 = S2; + rchannels++; + } + data->pos = pos; +} + +static snd_pcm_sframes_t rate_src_frames(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t frames) +{ + rate_t *data; + snd_pcm_sframes_t res; + + snd_assert(plugin != NULL, return -ENXIO); + if (frames == 0) + return 0; + data = (rate_t *)plugin->extra_data; + if (plugin->src_format.rate < plugin->dst_format.rate) { + res = (((frames * data->pitch) + (BITS/2)) >> SHIFT); + } else { + res = (((frames << SHIFT) + (data->pitch / 2)) / data->pitch); + } + if (data->old_src_frames > 0) { + snd_pcm_sframes_t frames1 = frames, res1 = data->old_dst_frames; + while (data->old_src_frames < frames1) { + frames1 >>= 1; + res1 <<= 1; + } + while (data->old_src_frames > frames1) { + frames1 <<= 1; + res1 >>= 1; + } + if (data->old_src_frames == frames1) + return res1; + } + data->old_src_frames = frames; + data->old_dst_frames = res; + return res; +} + +static snd_pcm_sframes_t rate_dst_frames(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t frames) +{ + rate_t *data; + snd_pcm_sframes_t res; + + snd_assert(plugin != NULL, return -ENXIO); + if (frames == 0) + return 0; + data = (rate_t *)plugin->extra_data; + if (plugin->src_format.rate < plugin->dst_format.rate) { + res = (((frames << SHIFT) + (data->pitch / 2)) / data->pitch); + } else { + res = (((frames * data->pitch) + (BITS/2)) >> SHIFT); + } + if (data->old_dst_frames > 0) { + snd_pcm_sframes_t frames1 = frames, res1 = data->old_src_frames; + while (data->old_dst_frames < frames1) { + frames1 >>= 1; + res1 <<= 1; + } + while (data->old_dst_frames > frames1) { + frames1 <<= 1; + res1 >>= 1; + } + if (data->old_dst_frames == frames1) + return res1; + } + data->old_dst_frames = frames; + data->old_src_frames = res; + return res; +} + +static snd_pcm_sframes_t rate_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + snd_pcm_uframes_t dst_frames; + rate_t *data; + + snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO); + if (frames == 0) + return 0; +#ifdef CONFIG_SND_DEBUG + { + unsigned int channel; + for (channel = 0; channel < plugin->src_format.channels; channel++) { + snd_assert(src_channels[channel].area.first % 8 == 0 && + src_channels[channel].area.step % 8 == 0, + return -ENXIO); + snd_assert(dst_channels[channel].area.first % 8 == 0 && + dst_channels[channel].area.step % 8 == 0, + return -ENXIO); + } + } +#endif + + dst_frames = rate_dst_frames(plugin, frames); + if (dst_frames > dst_channels[0].frames) + dst_frames = dst_channels[0].frames; + data = (rate_t *)plugin->extra_data; + data->func(plugin, src_channels, dst_channels, frames, dst_frames); + return dst_frames; +} + +static int rate_action(snd_pcm_plugin_t *plugin, + snd_pcm_plugin_action_t action, + unsigned long udata ATTRIBUTE_UNUSED) +{ + snd_assert(plugin != NULL, return -ENXIO); + switch (action) { + case INIT: + case PREPARE: + rate_init(plugin); + break; + default: + break; + } + return 0; /* silenty ignore other actions */ +} + +int snd_pcm_plugin_build_rate(snd_pcm_plug_t *plug, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + snd_pcm_plugin_t **r_plugin) +{ + int err; + rate_t *data; + snd_pcm_plugin_t *plugin; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + + snd_assert(src_format->channels == dst_format->channels, return -ENXIO); + snd_assert(src_format->channels > 0, return -ENXIO); + snd_assert(snd_pcm_format_linear(src_format->format) != 0, return -ENXIO); + snd_assert(snd_pcm_format_linear(dst_format->format) != 0, return -ENXIO); + snd_assert(src_format->rate != dst_format->rate, return -ENXIO); + + err = snd_pcm_plugin_build(plug, "rate conversion", + src_format, dst_format, + sizeof(rate_t) + src_format->channels * sizeof(rate_channel_t), + &plugin); + if (err < 0) + return err; + data = (rate_t *)plugin->extra_data; + data->get = getput_index(src_format->format); + snd_assert(data->get >= 0 && data->get < 4*2*2, return -EINVAL); + data->put = getput_index(dst_format->format); + snd_assert(data->put >= 0 && data->put < 4*2*2, return -EINVAL); + + if (src_format->rate < dst_format->rate) { + data->pitch = ((src_format->rate << SHIFT) + (dst_format->rate >> 1)) / dst_format->rate; + data->func = resample_expand; + } else { + data->pitch = ((dst_format->rate << SHIFT) + (src_format->rate >> 1)) / src_format->rate; + data->func = resample_shrink; + } + data->pos = 0; + rate_init(plugin); + data->old_src_frames = data->old_dst_frames = 0; + plugin->transfer = rate_transfer; + plugin->src_frames = rate_src_frames; + plugin->dst_frames = rate_dst_frames; + plugin->action = rate_action; + *r_plugin = plugin; + return 0; +} diff --git a/sound/core/oss/route.c b/sound/core/oss/route.c new file mode 100644 index 000000000000..c955b7dfdb30 --- /dev/null +++ b/sound/core/oss/route.c @@ -0,0 +1,519 @@ +/* + * Attenuated route Plug-In + * Copyright (c) 2000 by Abramo Bagnara + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include "pcm_plugin.h" + +/* The best possible hack to support missing optimization in gcc 2.7.2.3 */ +#if ROUTE_PLUGIN_RESOLUTION & (ROUTE_PLUGIN_RESOLUTION - 1) != 0 +#define div(a) a /= ROUTE_PLUGIN_RESOLUTION +#elif ROUTE_PLUGIN_RESOLUTION == 16 +#define div(a) a >>= 4 +#else +#error "Add some code here" +#endif + +typedef struct ttable_dst ttable_dst_t; +typedef struct route_private_data route_t; + +typedef void (*route_channel_f)(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channel, + ttable_dst_t* ttable, snd_pcm_uframes_t frames); + +typedef struct { + int channel; + int as_int; +} ttable_src_t; + +struct ttable_dst { + int att; /* Attenuated */ + unsigned int nsrcs; + ttable_src_t* srcs; + route_channel_f func; +}; + +struct route_private_data { + enum {R_UINT32=0, R_UINT64=1} sum_type; + int get, put; + int conv; + int src_sample_size; + ttable_dst_t ttable[0]; +}; + +typedef union { + u_int32_t as_uint32; + u_int64_t as_uint64; +} sum_t; + + +static void route_to_channel_from_zero(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels ATTRIBUTE_UNUSED, + snd_pcm_plugin_channel_t *dst_channel, + ttable_dst_t* ttable ATTRIBUTE_UNUSED, snd_pcm_uframes_t frames) +{ + if (dst_channel->wanted) + snd_pcm_area_silence(&dst_channel->area, 0, frames, plugin->dst_format.format); + dst_channel->enabled = 0; +} + +static void route_to_channel_from_one(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channel, + ttable_dst_t* ttable, snd_pcm_uframes_t frames) +{ +#define CONV_LABELS +#include "plugin_ops.h" +#undef CONV_LABELS + route_t *data = (route_t *)plugin->extra_data; + void *conv; + const snd_pcm_plugin_channel_t *src_channel = NULL; + unsigned int srcidx; + char *src, *dst; + int src_step, dst_step; + for (srcidx = 0; srcidx < ttable->nsrcs; ++srcidx) { + src_channel = &src_channels[ttable->srcs[srcidx].channel]; + if (src_channel->area.addr != NULL) + break; + } + if (srcidx == ttable->nsrcs) { + route_to_channel_from_zero(plugin, src_channels, dst_channel, ttable, frames); + return; + } + + dst_channel->enabled = 1; + conv = conv_labels[data->conv]; + src = src_channel->area.addr + src_channel->area.first / 8; + src_step = src_channel->area.step / 8; + dst = dst_channel->area.addr + dst_channel->area.first / 8; + dst_step = dst_channel->area.step / 8; + while (frames-- > 0) { + goto *conv; +#define CONV_END after +#include "plugin_ops.h" +#undef CONV_END + after: + src += src_step; + dst += dst_step; + } +} + +static void route_to_channel(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channel, + ttable_dst_t* ttable, snd_pcm_uframes_t frames) +{ +#define GET_U_LABELS +#define PUT_U32_LABELS +#include "plugin_ops.h" +#undef GET_U_LABELS +#undef PUT_U32_LABELS + static void *zero_labels[2] = { &&zero_int32, &&zero_int64 }; + /* sum_type att */ + static void *add_labels[2 * 2] = { &&add_int32_noatt, &&add_int32_att, + &&add_int64_noatt, &&add_int64_att, + }; + /* sum_type att shift */ + static void *norm_labels[2 * 2 * 4] = { NULL, + &&norm_int32_8_noatt, + &&norm_int32_16_noatt, + &&norm_int32_24_noatt, + NULL, + &&norm_int32_8_att, + &&norm_int32_16_att, + &&norm_int32_24_att, + &&norm_int64_0_noatt, + &&norm_int64_8_noatt, + &&norm_int64_16_noatt, + &&norm_int64_24_noatt, + &&norm_int64_0_att, + &&norm_int64_8_att, + &&norm_int64_16_att, + &&norm_int64_24_att, + }; + route_t *data = (route_t *)plugin->extra_data; + void *zero, *get, *add, *norm, *put_u32; + int nsrcs = ttable->nsrcs; + char *dst; + int dst_step; + char *srcs[nsrcs]; + int src_steps[nsrcs]; + ttable_src_t src_tt[nsrcs]; + u_int32_t sample = 0; + int srcidx, srcidx1 = 0; + for (srcidx = 0; srcidx < nsrcs; ++srcidx) { + const snd_pcm_plugin_channel_t *src_channel = &src_channels[ttable->srcs[srcidx].channel]; + if (!src_channel->enabled) + continue; + srcs[srcidx1] = src_channel->area.addr + src_channel->area.first / 8; + src_steps[srcidx1] = src_channel->area.step / 8; + src_tt[srcidx1] = ttable->srcs[srcidx]; + srcidx1++; + } + nsrcs = srcidx1; + if (nsrcs == 0) { + route_to_channel_from_zero(plugin, src_channels, dst_channel, ttable, frames); + return; + } else if (nsrcs == 1 && src_tt[0].as_int == ROUTE_PLUGIN_RESOLUTION) { + route_to_channel_from_one(plugin, src_channels, dst_channel, ttable, frames); + return; + } + + dst_channel->enabled = 1; + zero = zero_labels[data->sum_type]; + get = get_u_labels[data->get]; + add = add_labels[data->sum_type * 2 + ttable->att]; + norm = norm_labels[data->sum_type * 8 + ttable->att * 4 + 4 - data->src_sample_size]; + put_u32 = put_u32_labels[data->put]; + dst = dst_channel->area.addr + dst_channel->area.first / 8; + dst_step = dst_channel->area.step / 8; + + while (frames-- > 0) { + ttable_src_t *ttp = src_tt; + sum_t sum; + + /* Zero sum */ + goto *zero; + zero_int32: + sum.as_uint32 = 0; + goto zero_end; + zero_int64: + sum.as_uint64 = 0; + goto zero_end; + zero_end: + for (srcidx = 0; srcidx < nsrcs; ++srcidx) { + char *src = srcs[srcidx]; + + /* Get sample */ + goto *get; +#define GET_U_END after_get +#include "plugin_ops.h" +#undef GET_U_END + after_get: + + /* Sum */ + goto *add; + add_int32_att: + sum.as_uint32 += sample * ttp->as_int; + goto after_sum; + add_int32_noatt: + if (ttp->as_int) + sum.as_uint32 += sample; + goto after_sum; + add_int64_att: + sum.as_uint64 += (u_int64_t) sample * ttp->as_int; + goto after_sum; + add_int64_noatt: + if (ttp->as_int) + sum.as_uint64 += sample; + goto after_sum; + after_sum: + srcs[srcidx] += src_steps[srcidx]; + ttp++; + } + + /* Normalization */ + goto *norm; + norm_int32_8_att: + sum.as_uint64 = sum.as_uint32; + norm_int64_8_att: + sum.as_uint64 <<= 8; + norm_int64_0_att: + div(sum.as_uint64); + goto norm_int; + + norm_int32_16_att: + sum.as_uint64 = sum.as_uint32; + norm_int64_16_att: + sum.as_uint64 <<= 16; + div(sum.as_uint64); + goto norm_int; + + norm_int32_24_att: + sum.as_uint64 = sum.as_uint32; + norm_int64_24_att: + sum.as_uint64 <<= 24; + div(sum.as_uint64); + goto norm_int; + + norm_int32_8_noatt: + sum.as_uint64 = sum.as_uint32; + norm_int64_8_noatt: + sum.as_uint64 <<= 8; + goto norm_int; + + norm_int32_16_noatt: + sum.as_uint64 = sum.as_uint32; + norm_int64_16_noatt: + sum.as_uint64 <<= 16; + goto norm_int; + + norm_int32_24_noatt: + sum.as_uint64 = sum.as_uint32; + norm_int64_24_noatt: + sum.as_uint64 <<= 24; + goto norm_int; + + norm_int64_0_noatt: + norm_int: + if (sum.as_uint64 > (u_int32_t)0xffffffff) + sample = (u_int32_t)0xffffffff; + else + sample = sum.as_uint64; + goto after_norm; + + after_norm: + + /* Put sample */ + goto *put_u32; +#define PUT_U32_END after_put_u32 +#include "plugin_ops.h" +#undef PUT_U32_END + after_put_u32: + + dst += dst_step; + } +} + +static int route_src_channels_mask(snd_pcm_plugin_t *plugin, + bitset_t *dst_vmask, + bitset_t **src_vmask) +{ + route_t *data = (route_t *)plugin->extra_data; + int schannels = plugin->src_format.channels; + int dchannels = plugin->dst_format.channels; + bitset_t *vmask = plugin->src_vmask; + int channel; + ttable_dst_t *dp = data->ttable; + bitset_zero(vmask, schannels); + for (channel = 0; channel < dchannels; channel++, dp++) { + unsigned int src; + ttable_src_t *sp; + if (!bitset_get(dst_vmask, channel)) + continue; + sp = dp->srcs; + for (src = 0; src < dp->nsrcs; src++, sp++) + bitset_set(vmask, sp->channel); + } + *src_vmask = vmask; + return 0; +} + +static int route_dst_channels_mask(snd_pcm_plugin_t *plugin, + bitset_t *src_vmask, + bitset_t **dst_vmask) +{ + route_t *data = (route_t *)plugin->extra_data; + int dchannels = plugin->dst_format.channels; + bitset_t *vmask = plugin->dst_vmask; + int channel; + ttable_dst_t *dp = data->ttable; + bitset_zero(vmask, dchannels); + for (channel = 0; channel < dchannels; channel++, dp++) { + unsigned int src; + ttable_src_t *sp; + sp = dp->srcs; + for (src = 0; src < dp->nsrcs; src++, sp++) { + if (bitset_get(src_vmask, sp->channel)) { + bitset_set(vmask, channel); + break; + } + } + } + *dst_vmask = vmask; + return 0; +} + +static void route_free(snd_pcm_plugin_t *plugin) +{ + route_t *data = (route_t *)plugin->extra_data; + unsigned int dst_channel; + for (dst_channel = 0; dst_channel < plugin->dst_format.channels; ++dst_channel) { + kfree(data->ttable[dst_channel].srcs); + } +} + +static int route_load_ttable(snd_pcm_plugin_t *plugin, + const route_ttable_entry_t* src_ttable) +{ + route_t *data; + unsigned int src_channel, dst_channel; + const route_ttable_entry_t *sptr; + ttable_dst_t *dptr; + if (src_ttable == NULL) + return 0; + data = (route_t *)plugin->extra_data; + dptr = data->ttable; + sptr = src_ttable; + plugin->private_free = route_free; + for (dst_channel = 0; dst_channel < plugin->dst_format.channels; ++dst_channel) { + route_ttable_entry_t t = 0; + int att = 0; + int nsrcs = 0; + ttable_src_t srcs[plugin->src_format.channels]; + for (src_channel = 0; src_channel < plugin->src_format.channels; ++src_channel) { + snd_assert(*sptr >= 0 || *sptr <= FULL, return -ENXIO); + if (*sptr != 0) { + srcs[nsrcs].channel = src_channel; + srcs[nsrcs].as_int = *sptr; + if (*sptr != FULL) + att = 1; + t += *sptr; + nsrcs++; + } + sptr++; + } + dptr->att = att; + dptr->nsrcs = nsrcs; + if (nsrcs == 0) + dptr->func = route_to_channel_from_zero; + else if (nsrcs == 1 && !att) + dptr->func = route_to_channel_from_one; + else + dptr->func = route_to_channel; + if (nsrcs > 0) { + int srcidx; + dptr->srcs = kcalloc(nsrcs, sizeof(*srcs), GFP_KERNEL); + for(srcidx = 0; srcidx < nsrcs; srcidx++) + dptr->srcs[srcidx] = srcs[srcidx]; + } else + dptr->srcs = NULL; + dptr++; + } + return 0; +} + +static snd_pcm_sframes_t route_transfer(snd_pcm_plugin_t *plugin, + const snd_pcm_plugin_channel_t *src_channels, + snd_pcm_plugin_channel_t *dst_channels, + snd_pcm_uframes_t frames) +{ + route_t *data; + int src_nchannels, dst_nchannels; + int dst_channel; + ttable_dst_t *ttp; + snd_pcm_plugin_channel_t *dvp; + + snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO); + if (frames == 0) + return 0; + data = (route_t *)plugin->extra_data; + + src_nchannels = plugin->src_format.channels; + dst_nchannels = plugin->dst_format.channels; + +#ifdef CONFIG_SND_DEBUG + { + int src_channel; + for (src_channel = 0; src_channel < src_nchannels; ++src_channel) { + snd_assert(src_channels[src_channel].area.first % 8 == 0 || + src_channels[src_channel].area.step % 8 == 0, + return -ENXIO); + } + for (dst_channel = 0; dst_channel < dst_nchannels; ++dst_channel) { + snd_assert(dst_channels[dst_channel].area.first % 8 == 0 || + dst_channels[dst_channel].area.step % 8 == 0, + return -ENXIO); + } + } +#endif + + ttp = data->ttable; + dvp = dst_channels; + for (dst_channel = 0; dst_channel < dst_nchannels; ++dst_channel) { + ttp->func(plugin, src_channels, dvp, ttp, frames); + dvp++; + ttp++; + } + return frames; +} + +int getput_index(int format) +{ + int sign, width, endian; + sign = !snd_pcm_format_signed(format); + width = snd_pcm_format_width(format) / 8 - 1; + if (width < 0 || width > 3) { + snd_printk(KERN_ERR "snd-pcm-oss: invalid format %d\n", format); + width = 0; + } +#ifdef SNDRV_LITTLE_ENDIAN + endian = snd_pcm_format_big_endian(format); +#else + endian = snd_pcm_format_little_endian(format); +#endif + if (endian < 0) + endian = 0; + return width * 4 + endian * 2 + sign; +} + +int snd_pcm_plugin_build_route(snd_pcm_plug_t *plug, + snd_pcm_plugin_format_t *src_format, + snd_pcm_plugin_format_t *dst_format, + route_ttable_entry_t *ttable, + snd_pcm_plugin_t **r_plugin) +{ + route_t *data; + snd_pcm_plugin_t *plugin; + int err; + + snd_assert(r_plugin != NULL, return -ENXIO); + *r_plugin = NULL; + snd_assert(src_format->rate == dst_format->rate, return -ENXIO); + snd_assert(snd_pcm_format_linear(src_format->format) != 0 && + snd_pcm_format_linear(dst_format->format) != 0, + return -ENXIO); + + err = snd_pcm_plugin_build(plug, "attenuated route conversion", + src_format, dst_format, + sizeof(route_t) + sizeof(data->ttable[0]) * dst_format->channels, + &plugin); + if (err < 0) + return err; + + data = (route_t *) plugin->extra_data; + + data->get = getput_index(src_format->format); + snd_assert(data->get >= 0 && data->get < 4*2*2, return -EINVAL); + data->put = getput_index(dst_format->format); + snd_assert(data->get >= 0 && data->get < 4*2*2, return -EINVAL); + data->conv = conv_index(src_format->format, dst_format->format); + + if (snd_pcm_format_width(src_format->format) == 32) + data->sum_type = R_UINT64; + else + data->sum_type = R_UINT32; + data->src_sample_size = snd_pcm_format_width(src_format->format) / 8; + + if ((err = route_load_ttable(plugin, ttable)) < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + plugin->transfer = route_transfer; + plugin->src_channels_mask = route_src_channels_mask; + plugin->dst_channels_mask = route_dst_channels_mask; + *r_plugin = plugin; + return 0; +} -- cgit v1.2.3-59-g8ed1b