/* * * Video for Linux Two * Backward Compatibility Layer * * Support subroutines for providing V4L2 drivers with backward * compatibility with applications using the old API. * * 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. * * Author: Bill Dirks * et al. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_KMOD #include #endif static unsigned int debug = 0; module_param(debug, int, 0644); MODULE_PARM_DESC(debug,"enable debug messages"); MODULE_AUTHOR("Bill Dirks"); MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers."); MODULE_LICENSE("GPL"); #define dprintk(fmt, arg...) if (debug) \ printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg) /* * I O C T L T R A N S L A T I O N * * From here on down is the code for translating the numerous * ioctl commands from the old API to the new API. */ static int get_v4l_control(struct inode *inode, struct file *file, int cid, v4l2_kioctl drv) { struct v4l2_queryctrl qctrl2; struct v4l2_control ctrl2; int err; qctrl2.id = cid; err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2); if (err < 0) dprintk("VIDIOC_QUERYCTRL: %d\n",err); if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) { ctrl2.id = qctrl2.id; err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2); if (err < 0) { dprintk("VIDIOC_G_CTRL: %d\n",err); return 0; } return ((ctrl2.value - qctrl2.minimum) * 65535 + (qctrl2.maximum - qctrl2.minimum) / 2) / (qctrl2.maximum - qctrl2.minimum); } return 0; } static int set_v4l_control(struct inode *inode, struct file *file, int cid, int value, v4l2_kioctl drv) { struct v4l2_queryctrl qctrl2; struct v4l2_control ctrl2; int err; qctrl2.id = cid; err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2); if (err < 0) dprintk("VIDIOC_QUERYCTRL: %d\n",err); if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) && !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) { if (value < 0) value = 0; if (value > 65535) value = 65535; if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN) value = 65535; ctrl2.id = qctrl2.id; ctrl2.value = (value * (qctrl2.maximum - qctrl2.minimum) + 32767) / 65535; ctrl2.value += qctrl2.minimum; err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2); if (err < 0) dprintk("VIDIOC_S_CTRL: %d\n",err); } return 0; } /* ----------------------------------------------------------------- */ static int palette2pixelformat[] = { [VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY, [VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555, [VIDEO_PALETTE_RGB565] = V4L2_PIX_FMT_RGB565, [VIDEO_PALETTE_RGB24] = V4L2_PIX_FMT_BGR24, [VIDEO_PALETTE_RGB32] = V4L2_PIX_FMT_BGR32, /* yuv packed pixel */ [VIDEO_PALETTE_YUYV] = V4L2_PIX_FMT_YUYV, [VIDEO_PALETTE_YUV422] = V4L2_PIX_FMT_YUYV, [VIDEO_PALETTE_UYVY] = V4L2_PIX_FMT_UYVY, /* yuv planar */ [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410, [VIDEO_PALETTE_YUV420] = V4L2_PIX_FMT_YUV420, [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420, [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P, [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P, }; static unsigned int palette_to_pixelformat(unsigned int palette) { if (palette < ARRAY_SIZE(palette2pixelformat)) return palette2pixelformat[palette]; else return 0; } static unsigned int pixelformat_to_palette(int pixelformat) { int palette = 0; switch (pixelformat) { case V4L2_PIX_FMT_GREY: palette = VIDEO_PALETTE_GREY; break; case V4L2_PIX_FMT_RGB555: palette = VIDEO_PALETTE_RGB555; break; case V4L2_PIX_FMT_RGB565: palette = VIDEO_PALETTE_RGB565; break; case V4L2_PIX_FMT_BGR24: palette = VIDEO_PALETTE_RGB24; break; case V4L2_PIX_FMT_BGR32: palette = VIDEO_PALETTE_RGB32; break; /* yuv packed pixel */ case V4L2_PIX_FMT_YUYV: palette = VIDEO_PALETTE_YUYV; break; case V4L2_PIX_FMT_UYVY: palette = VIDEO_PALETTE_UYVY; break; /* yuv planar */ case V4L2_PIX_FMT_YUV410: palette = VIDEO_PALETTE_YUV420; break; case V4L2_PIX_FMT_YUV420: palette = VIDEO_PALETTE_YUV420; break; case V4L2_PIX_FMT_YUV411P: palette = VIDEO_PALETTE_YUV411P; break; case V4L2_PIX_FMT_YUV422P: palette = VIDEO_PALETTE_YUV422P; break; } return palette; } /* ----------------------------------------------------------------- */ static int poll_one(struct file *file) { int retval = 1; poll_table *table; struct poll_wqueues pwq; poll_initwait(&pwq); table = &pwq.pt; for (;;) { int mask; set_current_state(TASK_INTERRUPTIBLE); mask = file->f_op->poll(file, table); if (mask & POLLIN) break; table = NULL; if (signal_pending(current)) { retval = -ERESTARTSYS; break; } schedule(); } set_current_state(TASK_RUNNING); poll_freewait(&pwq); return retval; } static int count_inputs(struct inode *inode, struct file *file, v4l2_kioctl drv) { struct v4l2_input input2; int i; for (i = 0;; i++) { memset(&input2,0,sizeof(input2)); input2.index = i; if (0 != drv(inode,file,VIDIOC_ENUMINPUT, &input2)) break; } return i; } static int check_size(struct inode *inode, struct file *file, v4l2_kioctl drv, int *maxw, int *maxh) { struct v4l2_fmtdesc desc2; struct v4l2_format fmt2; memset(&desc2,0,sizeof(desc2)); memset(&fmt2,0,sizeof(fmt2)); desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; if (0 != drv(inode,file,VIDIOC_ENUM_FMT, &desc2)) goto done; fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fmt2.fmt.pix.width = 10000; fmt2.fmt.pix.height = 10000; fmt2.fmt.pix.pixelformat = desc2.pixelformat; if (0 != drv(inode,file,VIDIOC_TRY_FMT, &fmt2)) goto done; *maxw = fmt2.fmt.pix.width; *maxh = fmt2.fmt.pix.height; done: return 0; } /* ----------------------------------------------------------------- */ /* * This function is exported. */ int v4l_compat_translate_ioctl(struct inode *inode, struct file *file, int cmd, void *arg, v4l2_kioctl drv) { struct v4l2_capability *cap2 = NULL; struct v4l2_format *fmt2 = NULL; enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE; struct v4l2_framebuffer fbuf2; struct v4l2_input input2; struct v4l2_tuner tun2; struct v4l2_standard std2; struct v4l2_frequency freq2; struct v4l2_audio aud2; struct v4l2_queryctrl qctrl2; struct v4l2_buffer buf2; v4l2_std_id sid; int i, err = 0; switch (cmd) { case VIDIOCGCAP: /* capability */ { struct video_capability *cap = arg; cap2 = kzalloc(sizeof(*cap2),GFP_KERNEL); memset(cap, 0, sizeof(*cap)); memset(&fbuf2, 0, sizeof(fbuf2)); err = drv(inode, file, VIDIOC_QUERYCAP, cap2); if (err < 0) { dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err); break; } if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) { err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2); if (err < 0) { dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err); memset(&fbuf2, 0, sizeof(fbuf2)); } err = 0; } memcpy(cap->name, cap2->card, min(sizeof(cap->name), sizeof(cap2->card))); cap->name[sizeof(cap->name) - 1] = 0; if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE) cap->type |= VID_TYPE_CAPTURE; if (cap2->capabilities & V4L2_CAP_TUNER) cap->type |= VID_TYPE_TUNER; if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE) cap->type |= VID_TYPE_TELETEXT; if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) cap->type |= VID_TYPE_OVERLAY; if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING) cap->type |= VID_TYPE_CLIPPING; cap->channels = count_inputs(inode,file,drv); check_size(inode,file,drv, &cap->maxwidth,&cap->maxheight); cap->audios = 0; /* FIXME */ cap->minwidth = 48; /* FIXME */ cap->minheight = 32; /* FIXME */ break; } case VIDIOCGFBUF: /* get frame buffer */ { struct video_buffer *buffer = arg; memset(buffer, 0, sizeof(*buffer)); memset(&fbuf2, 0, sizeof(fbuf2)); err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2); if (err < 0) { dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err); break; } buffer->base = fbuf2.base; buffer->height = fbuf2.fmt.height; buffer->width = fbuf2.fmt.width; switch (fbuf2.fmt.pixelformat) { case V4L2_PIX_FMT_RGB332: buffer->depth = 8; break; case V4L2_PIX_FMT_RGB555: buffer->depth = 15; break; case V4L2_PIX_FMT_RGB565: buffer->depth = 16; break; case V4L2_PIX_FMT_BGR24: buffer->depth = 24; break; case V4L2_PIX_FMT_BGR32: buffer->depth = 32; break; default: buffer->depth = 0; } if (fbuf2.fmt.bytesperline) { buffer->bytesperline = fbuf2.fmt.bytesperline; if (!buffer->depth && buffer->width) buffer->depth = ((fbuf2.fmt.bytesperline<<3) + (buffer->width-1) ) /buffer->width; } else { buffer->bytesperline = (buffer->width * buffer->depth + 7) & 7; buffer->bytesperline >>= 3; } break; } case VIDIOCSFBUF: /* set frame buffer */ { struct video_buffer *buffer = arg; memset(&fbuf2, 0, sizeof(fbuf2)); fbuf2.base = buffer->base; fbuf2.fmt.height = buffer->height; fbuf2.fmt.width = buffer->width; switch (buffer->depth) { case 8: fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332; break; case 15: fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555; break; case 16: fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565; break; case 24: fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24; break; case 32: fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32; break; } fbuf2.fmt.bytesperline = buffer->bytesperline; err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2); if (err < 0) dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err); break; } case VIDIOCGWIN: /* get window or capture dimensions */ { struct video_window *win = arg; fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); memset(win,0,sizeof(*win)); fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err); if (err == 0) { win->x = fmt2->fmt.win.w.left; win->y = fmt2->fmt.win.w.top; win->width = fmt2->fmt.win.w.width; win->height = fmt2->fmt.win.w.height; win->chromakey = fmt2->fmt.win.chromakey; win->clips = NULL; win->clipcount = 0; break; } fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) { dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err); break; } win->x = 0; win->y = 0; win->width = fmt2->fmt.pix.width; win->height = fmt2->fmt.pix.height; win->chromakey = 0; win->clips = NULL; win->clipcount = 0; break; } case VIDIOCSWIN: /* set window and/or capture dimensions */ { struct video_window *win = arg; int err1,err2; fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type); err1 = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err1 < 0) dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err); if (err1 == 0) { fmt2->fmt.pix.width = win->width; fmt2->fmt.pix.height = win->height; fmt2->fmt.pix.field = V4L2_FIELD_ANY; fmt2->fmt.pix.bytesperline = 0; err = drv(inode, file, VIDIOC_S_FMT, fmt2); if (err < 0) dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n", err); win->width = fmt2->fmt.pix.width; win->height = fmt2->fmt.pix.height; } memset(fmt2,0,sizeof(*fmt2)); fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY; fmt2->fmt.win.w.left = win->x; fmt2->fmt.win.w.top = win->y; fmt2->fmt.win.w.width = win->width; fmt2->fmt.win.w.height = win->height; fmt2->fmt.win.chromakey = win->chromakey; fmt2->fmt.win.clips = (void __user *)win->clips; fmt2->fmt.win.clipcount = win->clipcount; err2 = drv(inode, file, VIDIOC_S_FMT, fmt2); if (err2 < 0) dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err); if (err1 != 0 && err2 != 0) err = err1; break; } case VIDIOCCAPTURE: /* turn on/off preview */ { int *on = arg; if (0 == *on) { /* dirty hack time. But v4l1 has no STREAMOFF * equivalent in the API, and this one at * least comes close ... */ drv(inode, file, VIDIOC_STREAMOFF, &captype); } err = drv(inode, file, VIDIOC_OVERLAY, arg); if (err < 0) dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err); break; } case VIDIOCGCHAN: /* get input information */ { struct video_channel *chan = arg; memset(&input2,0,sizeof(input2)); input2.index = chan->channel; err = drv(inode, file, VIDIOC_ENUMINPUT, &input2); if (err < 0) { dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: " "channel=%d err=%d\n",chan->channel,err); break; } chan->channel = input2.index; memcpy(chan->name, input2.name, min(sizeof(chan->name), sizeof(input2.name))); chan->name[sizeof(chan->name) - 1] = 0; chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0; chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0; switch (input2.type) { case V4L2_INPUT_TYPE_TUNER: chan->type = VIDEO_TYPE_TV; break; default: case V4L2_INPUT_TYPE_CAMERA: chan->type = VIDEO_TYPE_CAMERA; break; } chan->norm = 0; err = drv(inode, file, VIDIOC_G_STD, &sid); if (err < 0) dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err); if (err == 0) { if (sid & V4L2_STD_PAL) chan->norm = VIDEO_MODE_PAL; if (sid & V4L2_STD_NTSC) chan->norm = VIDEO_MODE_NTSC; if (sid & V4L2_STD_SECAM) chan->norm = VIDEO_MODE_SECAM; } break; } case VIDIOCSCHAN: /* set input */ { struct video_channel *chan = arg; sid = 0; err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel); if (err < 0) dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err); switch (chan->norm) { case VIDEO_MODE_PAL: sid = V4L2_STD_PAL; break; case VIDEO_MODE_NTSC: sid = V4L2_STD_NTSC; break; case VIDEO_MODE_SECAM: sid = V4L2_STD_SECAM; break; } if (0 != sid) { err = drv(inode, file, VIDIOC_S_STD, &sid); if (err < 0) dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err); } break; } case VIDIOCGPICT: /* get tone controls & partial capture format */ { struct video_picture *pict = arg; pict->brightness = get_v4l_control(inode, file, V4L2_CID_BRIGHTNESS,drv); pict->hue = get_v4l_control(inode, file, V4L2_CID_HUE, drv); pict->contrast = get_v4l_control(inode, file, V4L2_CID_CONTRAST, drv); pict->colour = get_v4l_control(inode, file, V4L2_CID_SATURATION, drv); pict->whiteness = get_v4l_control(inode, file, V4L2_CID_WHITENESS, drv); fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) { dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err); break; } pict->depth = ((fmt2->fmt.pix.bytesperline<<3) + (fmt2->fmt.pix.width-1) ) /fmt2->fmt.pix.width; pict->palette = pixelformat_to_palette( fmt2->fmt.pix.pixelformat); break; } case VIDIOCSPICT: /* set tone controls & partial capture format */ { struct video_picture *pict = arg; memset(&fbuf2, 0, sizeof(fbuf2)); set_v4l_control(inode, file, V4L2_CID_BRIGHTNESS, pict->brightness, drv); set_v4l_control(inode, file, V4L2_CID_HUE, pict->hue, drv); set_v4l_control(inode, file, V4L2_CID_CONTRAST, pict->contrast, drv); set_v4l_control(inode, file, V4L2_CID_SATURATION, pict->colour, drv); set_v4l_control(inode, file, V4L2_CID_WHITENESS, pict->whiteness, drv); fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err); if (fmt2->fmt.pix.pixelformat != palette_to_pixelformat(pict->palette)) { fmt2->fmt.pix.pixelformat = palette_to_pixelformat( pict->palette); err = drv(inode, file, VIDIOC_S_FMT, fmt2); if (err < 0) dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",err); } err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2); if (err < 0) dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err); if (fbuf2.fmt.pixelformat != palette_to_pixelformat(pict->palette)) { fbuf2.fmt.pixelformat = palette_to_pixelformat( pict->palette); err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2); if (err < 0) dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",err); err = 0; /* likely fails for non-root */ } break; } case VIDIOCGTUNER: /* get tuner information */ { struct video_tuner *tun = arg; memset(&tun2,0,sizeof(tun2)); err = drv(inode, file, VIDIOC_G_TUNER, &tun2); if (err < 0) { dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err); break; } memcpy(tun->name, tun2.name, min(sizeof(tun->name), sizeof(tun2.name))); tun->name[sizeof(tun->name) - 1] = 0; tun->rangelow = tun2.rangelow; tun->rangehigh = tun2.rangehigh; tun->flags = 0; tun->mode = VIDEO_MODE_AUTO; for (i = 0; i < 64; i++) { memset(&std2,0,sizeof(std2)); std2.index = i; if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2)) break; if (std2.id & V4L2_STD_PAL) tun->flags |= VIDEO_TUNER_PAL; if (std2.id & V4L2_STD_NTSC) tun->flags |= VIDEO_TUNER_NTSC; if (std2.id & V4L2_STD_SECAM) tun->flags |= VIDEO_TUNER_SECAM; } err = drv(inode, file, VIDIOC_G_STD, &sid); if (err < 0) dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err); if (err == 0) { if (sid & V4L2_STD_PAL) tun->mode = VIDEO_MODE_PAL; if (sid & V4L2_STD_NTSC) tun->mode = VIDEO_MODE_NTSC; if (sid & V4L2_STD_SECAM) tun->mode = VIDEO_MODE_SECAM; } if (tun2.capability & V4L2_TUNER_CAP_LOW) tun->flags |= VIDEO_TUNER_LOW; if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO) tun->flags |= VIDEO_TUNER_STEREO_ON; tun->signal = tun2.signal; break; } case VIDIOCSTUNER: /* select a tuner input */ { struct video_tuner *tun = arg; struct v4l2_tuner t; memset(&t,0,sizeof(t)); t.index=tun->tuner; err = drv(inode, file, VIDIOC_S_INPUT, &t); if (err < 0) dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err); break; } case VIDIOCGFREQ: /* get frequency */ { unsigned long *freq = arg; memset(&freq2,0,sizeof(freq2)); freq2.tuner = 0; err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2); if (err < 0) dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err); if (0 == err) *freq = freq2.frequency; break; } case VIDIOCSFREQ: /* set frequency */ { unsigned long *freq = arg; memset(&freq2,0,sizeof(freq2)); drv(inode, file, VIDIOC_G_FREQUENCY, &freq2); freq2.frequency = *freq; err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2); if (err < 0) dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err); break; } case VIDIOCGAUDIO: /* get audio properties/controls */ { struct video_audio *aud = arg; memset(&aud2,0,sizeof(aud2)); err = drv(inode, file, VIDIOC_G_AUDIO, &aud2); if (err < 0) { dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err); break; } memcpy(aud->name, aud2.name, min(sizeof(aud->name), sizeof(aud2.name))); aud->name[sizeof(aud->name) - 1] = 0; aud->audio = aud2.index; aud->flags = 0; i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv); if (i >= 0) { aud->volume = i; aud->flags |= VIDEO_AUDIO_VOLUME; } i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv); if (i >= 0) { aud->bass = i; aud->flags |= VIDEO_AUDIO_BASS; } i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv); if (i >= 0) { aud->treble = i; aud->flags |= VIDEO_AUDIO_TREBLE; } i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv); if (i >= 0) { aud->balance = i; aud->flags |= VIDEO_AUDIO_BALANCE; } i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv); if (i >= 0) { if (i) aud->flags |= VIDEO_AUDIO_MUTE; aud->flags |= VIDEO_AUDIO_MUTABLE; } aud->step = 1; qctrl2.id = V4L2_CID_AUDIO_VOLUME; if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) aud->step = qctrl2.step; aud->mode = 0; memset(&tun2,0,sizeof(tun2)); err = drv(inode, file, VIDIOC_G_TUNER, &tun2); if (err < 0) { dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err); err = 0; break; } if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2) aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2; else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO) aud->mode = VIDEO_SOUND_STEREO; else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO) aud->mode = VIDEO_SOUND_MONO; break; } case VIDIOCSAUDIO: /* set audio controls */ { struct video_audio *aud = arg; memset(&aud2,0,sizeof(aud2)); memset(&tun2,0,sizeof(tun2)); aud2.index = aud->audio; err = drv(inode, file, VIDIOC_S_AUDIO, &aud2); if (err < 0) { dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err); break; } set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, aud->volume, drv); set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, aud->bass, drv); set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, aud->treble, drv); set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, aud->balance, drv); set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, !!(aud->flags & VIDEO_AUDIO_MUTE), drv); err = drv(inode, file, VIDIOC_G_TUNER, &tun2); if (err < 0) dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err); if (err == 0) { switch (aud->mode) { default: case VIDEO_SOUND_MONO: case VIDEO_SOUND_LANG1: tun2.audmode = V4L2_TUNER_MODE_MONO; break; case VIDEO_SOUND_STEREO: tun2.audmode = V4L2_TUNER_MODE_STEREO; break; case VIDEO_SOUND_LANG2: tun2.audmode = V4L2_TUNER_MODE_LANG2; break; } err = drv(inode, file, VIDIOC_S_TUNER, &tun2); if (err < 0) dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err); } err = 0; break; } case VIDIOCMCAPTURE: /* capture a frame */ { struct video_mmap *mm = arg; fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); memset(&buf2,0,sizeof(buf2)); fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) { dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err); break; } if (mm->width != fmt2->fmt.pix.width || mm->height != fmt2->fmt.pix.height || palette_to_pixelformat(mm->format) != fmt2->fmt.pix.pixelformat) {/* New capture format... */ fmt2->fmt.pix.width = mm->width; fmt2->fmt.pix.height = mm->height; fmt2->fmt.pix.pixelformat = palette_to_pixelformat(mm->format); fmt2->fmt.pix.field = V4L2_FIELD_ANY; fmt2->fmt.pix.bytesperline = 0; err = drv(inode, file, VIDIOC_S_FMT, fmt2); if (err < 0) { dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err); break; } } buf2.index = mm->frame; buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_QUERYBUF, &buf2); if (err < 0) { dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err); break; } err = drv(inode, file, VIDIOC_QBUF, &buf2); if (err < 0) { dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err); break; } err = drv(inode, file, VIDIOC_STREAMON, &captype); if (err < 0) dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err); break; } case VIDIOCSYNC: /* wait for a frame */ { int *i = arg; memset(&buf2,0,sizeof(buf2)); buf2.index = *i; buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; err = drv(inode, file, VIDIOC_QUERYBUF, &buf2); if (err < 0) { /* No such buffer */ dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err); break; } if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) { /* Buffer is not mapped */ err = -EINVAL; break; } /* make sure capture actually runs so we don't block forever */ err = drv(inode, file, VIDIOC_STREAMON, &captype); if (err < 0) { dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err); break; } /* Loop as long as the buffer is queued, but not done */ while ((buf2.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE)) == V4L2_BUF_FLAG_QUEUED) { err = poll_one(file); if (err < 0 || /* error or sleep was interrupted */ err == 0) /* timeout? Shouldn't occur. */ break; err = drv(inode, file, VIDIOC_QUERYBUF, &buf2); if (err < 0) dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err); } if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */ break; do { err = drv(inode, file, VIDIOC_DQBUF, &buf2); if (err < 0) dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err); } while (err == 0 && buf2.index != *i); break; } case VIDIOCGVBIFMT: /* query VBI data capture format */ { struct vbi_format *fmt = arg; fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE; err = drv(inode, file, VIDIOC_G_FMT, fmt2); if (err < 0) { dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err); break; } if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) { err = -EINVAL; break; } memset(fmt, 0, sizeof(*fmt)); fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line; fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate; fmt->sample_format = VIDEO_PALETTE_RAW; fmt->start[0] = fmt2->fmt.vbi.start[0]; fmt->count[0] = fmt2->fmt.vbi.count[0]; fmt->start[1] = fmt2->fmt.vbi.start[1]; fmt->count[1] = fmt2->fmt.vbi.count[1]; fmt->flags = fmt2->fmt.vbi.flags & 0x03; break; } case VIDIOCSVBIFMT: { struct vbi_format *fmt = arg; if (VIDEO_PALETTE_RAW != fmt->sample_format) { err = -EINVAL; break; } fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL); fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE; fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line; fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate; fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; fmt2->fmt.vbi.start[0] = fmt->start[0]; fmt2->fmt.vbi.count[0] = fmt->count[0]; fmt2->fmt.vbi.start[1] = fmt->start[1]; fmt2->fmt.vbi.count[1] = fmt->count[1]; fmt2->fmt.vbi.flags = fmt->flags; err = drv(inode, file, VIDIOC_TRY_FMT, fmt2); if (err < 0) { dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err); break; } if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line || fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate || fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY || fmt2->fmt.vbi.start[0] != fmt->start[0] || fmt2->fmt.vbi.count[0] != fmt->count[0] || fmt2->fmt.vbi.start[1] != fmt->start[1] || fmt2->fmt.vbi.count[1] != fmt->count[1] || fmt2->fmt.vbi.flags != fmt->flags) { err = -EINVAL; break; } err = drv(inode, file, VIDIOC_S_FMT, fmt2); if (err < 0) dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err); break; } default: err = -ENOIOCTLCMD; break; } kfree(cap2); kfree(fmt2); return err; } EXPORT_SYMBOL(v4l_compat_translate_ioctl); /* * Local variables: * c-basic-offset: 8 * End: */