/* * Routines for Gravis UltraSound soundcards - Synthesizer * 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 MODULE_AUTHOR("Jaroslav Kysela "); MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards - Synthesizer"); MODULE_LICENSE("GPL"); /* * */ static void snd_gus_synth_free_voices(struct snd_gus_card * gus, int client, int port) { int idx; struct snd_gus_voice * voice; for (idx = 0; idx < 32; idx++) { voice = &gus->gf1.voices[idx]; if (voice->use && voice->client == client && voice->port == port) snd_gf1_free_voice(gus, voice); } } static int snd_gus_synth_use(void *private_data, struct snd_seq_port_subscribe *info) { struct snd_gus_port * port = private_data; struct snd_gus_card * gus = port->gus; struct snd_gus_voice * voice; unsigned int idx; if (info->voices > 32) return -EINVAL; down(&gus->register_mutex); if (!snd_gus_use_inc(gus)) { up(&gus->register_mutex); return -EFAULT; } for (idx = 0; idx < info->voices; idx++) { voice = snd_gf1_alloc_voice(gus, SNDRV_GF1_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port); if (voice == NULL) { snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port); snd_gus_use_dec(gus); up(&gus->register_mutex); return -EBUSY; } voice->index = idx; } up(&gus->register_mutex); return 0; } static int snd_gus_synth_unuse(void *private_data, struct snd_seq_port_subscribe *info) { struct snd_gus_port * port = private_data; struct snd_gus_card * gus = port->gus; down(&gus->register_mutex); snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port); snd_gus_use_dec(gus); up(&gus->register_mutex); return 0; } /* * */ static void snd_gus_synth_free_private_instruments(struct snd_gus_port *p, int client) { struct snd_seq_instr_header ifree; memset(&ifree, 0, sizeof(ifree)); ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE; snd_seq_instr_list_free_cond(p->gus->gf1.ilist, &ifree, client, 0); } static int snd_gus_synth_event_input(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop) { struct snd_gus_port * p = private_data; snd_assert(p != NULL, return -EINVAL); if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE && ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) { snd_gus_sample_event(ev, p); return 0; } if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM && ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) { if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) { snd_gus_synth_free_private_instruments(p, ev->data.addr.client); return 0; } } if (direct) { if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) { snd_seq_instr_event(&p->gus->gf1.iwffff_ops.kops, p->gus->gf1.ilist, ev, p->gus->gf1.seq_client, atomic, hop); return 0; } } return 0; } static void snd_gus_synth_instr_notify(void *private_data, struct snd_seq_kinstr *instr, int what) { unsigned int idx; struct snd_gus_card *gus = private_data; struct snd_gus_voice *pvoice; unsigned long flags; spin_lock_irqsave(&gus->event_lock, flags); for (idx = 0; idx < 32; idx++) { pvoice = &gus->gf1.voices[idx]; if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) { if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) { pvoice->sample_ops->sample_stop(gus, pvoice, SAMPLE_STOP_IMMEDIATELY); } else { snd_gf1_stop_voice(gus, pvoice->number); pvoice->flags &= ~SNDRV_GF1_VFLG_RUNNING; } } } spin_unlock_irqrestore(&gus->event_lock, flags); } /* * */ static void snd_gus_synth_free_port(void *private_data) { struct snd_gus_port * p = private_data; if (p) snd_midi_channel_free_set(p->chset); } static int snd_gus_synth_create_port(struct snd_gus_card * gus, int idx) { struct snd_gus_port * p; struct snd_seq_port_callback callbacks; char name[32]; int result; p = &gus->gf1.seq_ports[idx]; p->chset = snd_midi_channel_alloc_set(16); if (p->chset == NULL) return -ENOMEM; p->chset->private_data = p; p->gus = gus; p->client = gus->gf1.seq_client; memset(&callbacks, 0, sizeof(callbacks)); callbacks.owner = THIS_MODULE; callbacks.use = snd_gus_synth_use; callbacks.unuse = snd_gus_synth_unuse; callbacks.event_input = snd_gus_synth_event_input; callbacks.private_free = snd_gus_synth_free_port; callbacks.private_data = p; sprintf(name, "%s port %i", gus->interwave ? "AMD InterWave" : "GF1", idx); p->chset->port = snd_seq_event_port_attach(gus->gf1.seq_client, &callbacks, SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE, SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE | SNDRV_SEQ_PORT_TYPE_SYNTH, 16, 0, name); if (p->chset->port < 0) { result = p->chset->port; snd_gus_synth_free_port(p); return result; } p->port = p->chset->port; return 0; } /* * */ static int snd_gus_synth_new_device(struct snd_seq_device *dev) { struct snd_gus_card *gus; int client, i; struct snd_seq_port_subscribe sub; struct snd_iwffff_ops *iwops; struct snd_gf1_ops *gf1ops; struct snd_simple_ops *simpleops; gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev); if (gus == NULL) return -EINVAL; init_MUTEX(&gus->register_mutex); gus->gf1.seq_client = -1; /* allocate new client */ client = gus->gf1.seq_client = snd_seq_create_kernel_client(gus->card, 1, gus->interwave ? "AMD InterWave" : "GF1"); if (client < 0) return client; for (i = 0; i < 4; i++) snd_gus_synth_create_port(gus, i); gus->gf1.ilist = snd_seq_instr_list_new(); if (gus->gf1.ilist == NULL) { snd_seq_delete_kernel_client(client); gus->gf1.seq_client = -1; return -ENOMEM; } gus->gf1.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT; simpleops = &gus->gf1.simple_ops; snd_seq_simple_init(simpleops, gus, NULL); simpleops->put_sample = snd_gus_simple_put_sample; simpleops->get_sample = snd_gus_simple_get_sample; simpleops->remove_sample = snd_gus_simple_remove_sample; simpleops->notify = snd_gus_synth_instr_notify; gf1ops = &gus->gf1.gf1_ops; snd_seq_gf1_init(gf1ops, gus, &simpleops->kops); gf1ops->put_sample = snd_gus_gf1_put_sample; gf1ops->get_sample = snd_gus_gf1_get_sample; gf1ops->remove_sample = snd_gus_gf1_remove_sample; gf1ops->notify = snd_gus_synth_instr_notify; iwops = &gus->gf1.iwffff_ops; snd_seq_iwffff_init(iwops, gus, &gf1ops->kops); iwops->put_sample = snd_gus_iwffff_put_sample; iwops->get_sample = snd_gus_iwffff_get_sample; iwops->remove_sample = snd_gus_iwffff_remove_sample; iwops->notify = snd_gus_synth_instr_notify; memset(&sub, 0, sizeof(sub)); sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM; sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE; sub.dest.client = client; sub.dest.port = 0; snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub); return 0; } static int snd_gus_synth_delete_device(struct snd_seq_device *dev) { struct snd_gus_card *gus; gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev); if (gus == NULL) return -EINVAL; if (gus->gf1.seq_client >= 0) { snd_seq_delete_kernel_client(gus->gf1.seq_client); gus->gf1.seq_client = -1; } if (gus->gf1.ilist) snd_seq_instr_list_free(&gus->gf1.ilist); return 0; } static int __init alsa_gus_synth_init(void) { static struct snd_seq_dev_ops ops = { snd_gus_synth_new_device, snd_gus_synth_delete_device }; return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops, sizeof(struct snd_gus_card *)); } static void __exit alsa_gus_synth_exit(void) { snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_GUS); } module_init(alsa_gus_synth_init) module_exit(alsa_gus_synth_exit)