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mpv/libmpdemux/tvi_v4l.c

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/*
Video 4 Linux input
(C) Alex Beregszaszi <alex@naxine.org>
Some ideas are based on xawtv/libng's grab-v4l.c written by
Gerd Knorr <kraxel@bytesex.org>
CODE IS UNDER DEVELOPMENT, NO FEATURE REQUESTS PLEASE!
*/
#include "config.h"
#if defined(USE_TV) && defined(HAVE_TV_V4L)
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <linux/videodev.h>
#include <unistd.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <string.h>
#include "mp_msg.h"
#include "../libao2/afmt.h"
#include "../libvo/img_format.h"
#include "../libvo/fastmemcpy.h"
#include "tv.h"
static tvi_info_t info = {
"Video for Linux TV Input",
"v4l",
"Alex Beregszaszi <alex@naxine.org>",
"under development"
};
typedef struct {
/* general */
char *video_device;
int fd;
struct video_capability capability;
struct video_channel *channels;
int act_channel;
struct video_tuner tuner;
/* video */
struct video_picture picture;
int format; /* output format */
int width;
int height;
int bytesperline;
struct video_mbuf mbuf;
unsigned char *mmap;
struct video_mmap *buf;
int nbuf;
int queue;
/* audio */
struct video_audio *audio;
int act_audio;
} priv_t;
#include "tvi_def.h"
static const char *device_cap2name[] = {
"capture", "tuner", "teletext", "overlay", "chromakey", "clipping",
"frameram", "scales", "monochrome", "subcapture", "mpeg-decoder",
"mpeg-encoder", "mjpeg-decoder", "mjpeg-encoder", NULL
};
static const char *device_palette2name[] = {
"-", "grey", "hi240", "rgb16", "rgb24", "rgb32", "rgb15", "yuv422",
"yuyv", "uyvy", "yuv420", "yuv411", "raw", "yuv422p", "yuv411p",
"yuv420p", "yuv410p", NULL
};
#define PALETTE(x) ((x < sizeof(device_pal)/sizeof(char*)) ? device_pal[x] : "UNKNOWN")
static const char *audio_mode2name[] = {
"unknown", "mono", "stereo", "language1", "language2", NULL
};
static int palette2depth(int palette)
{
switch(palette)
{
/* component */
case VIDEO_PALETTE_RGB555:
return(15);
case VIDEO_PALETTE_RGB565:
return(16);
case VIDEO_PALETTE_RGB24:
return(24);
case VIDEO_PALETTE_RGB32:
return(32);
/* planar */
case VIDEO_PALETTE_YUV422P:
case VIDEO_PALETTE_YUV411P:
case VIDEO_PALETTE_YUV420P:
case VIDEO_PALETTE_YUV410P:
return(12);
/* packed */
case VIDEO_PALETTE_YUV422:
case VIDEO_PALETTE_YUYV:
case VIDEO_PALETTE_UYVY:
case VIDEO_PALETTE_YUV420:
case VIDEO_PALETTE_YUV411:
return(16);
}
return(-1);
}
static int format2palette(int format)
{
switch(format)
{
case IMGFMT_RGB15:
return(VIDEO_PALETTE_RGB555);
case IMGFMT_RGB16:
return(VIDEO_PALETTE_RGB565);
case IMGFMT_RGB24:
return(VIDEO_PALETTE_RGB24);
case IMGFMT_RGB32:
return(VIDEO_PALETTE_RGB32);
case IMGFMT_YV12:
case IMGFMT_I420:
return(VIDEO_PALETTE_YUV420P);
case IMGFMT_UYVY:
return(VIDEO_PALETTE_YUV422);
}
return(-1);
}
#if 0
struct STRTAB {
long nr;
const char *str;
};
static struct STRTAB stereo[] = {
{ 0, "auto" },
{ VIDEO_SOUND_MONO, "mono" },
{ VIDEO_SOUND_STEREO, "stereo" },
{ VIDEO_SOUND_LANG1, "lang1" },
{ VIDEO_SOUND_LANG2, "lang1" },
{ -1, NULL }
};
static struct STRTAB norms_v4l[] = {
{ VIDEO_MODE_PAL, "PAL" },
{ VIDEO_MODE_NTSC, "NTSC" },
{ VIDEO_MODE_SECAM, "SECAM" },
{ VIDEO_MODE_AUTO, "AUTO" },
{ -1, NULL }
};
static struct STRTAB norms_bttv[] = {
{ VIDEO_MODE_PAL, "PAL" },
{ VIDEO_MODE_NTSC, "NTSC" },
{ VIDEO_MODE_SECAM, "SECAM" },
{ 3, "PAL-NC" },
{ 4, "PAL-M" },
{ 5, "PAL-N" },
{ 6, "NTSC-JP" },
{ -1, NULL }
};
static unsigned short _format2palette[VIDEO_FMT_COUNT] = {
0, /* unused */
VIDEO_PALETTE_HI240, /* RGB8 */
VIDEO_PALETTE_GREY,
VIDEO_PALETTE_RGB555,
VIDEO_PALETTE_RGB565,
0,
0,
VIDEO_PALETTE_RGB24,
VIDEO_PALETTE_RGB32,
0,
0,
0,
0,
VIDEO_PALETTE_YUV422,
VIDEO_PALETTE_YUV422P,
VIDEO_PALETTE_YUV420P,
};
#define FMT2PAL(fmt) ((fmt < sizeof(format2palette)/sizeof(unsigned short)) ? \
format2palette[fmt] : 0);
const unsigned int vfmt_to_depth[] = {
0,
8,
8,
16,
16,
16,
16,
24,
32,
24,
32,
16,
32,
16,
16,
12,
0,
0,
};
#endif
static int one = 1, zero = 0;
tvi_handle_t *tvi_init_v4l(char *device)
{
tvi_handle_t *h;
priv_t *priv;
h = new_handle();
if (!h)
return(NULL);
priv = h->priv;
/* set video device name */
if (!device)
priv->video_device = strdup("/dev/video0");
else
priv->video_device = strdup(device);
/* allocation failed */
if (!priv->video_device) {
free_handle(h);
return(NULL);
}
return(h);
}
static int init(priv_t *priv, tvi_param_t *params)
{
int i;
priv->fd = open(priv->video_device, O_RDWR);
if (priv->fd == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "unable to open '%s': %s\n",
priv->video_device, strerror(errno));
goto err;
}
mp_msg(MSGT_TV, MSGL_V, "Video fd: %d\n", priv->fd);
/* get capabilities (priv->capability is needed!) */
if (ioctl(priv->fd, VIDIOCGCAP, &priv->capability) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno));
goto err;
}
fcntl(priv->fd, F_SETFD, FD_CLOEXEC);
mp_msg(MSGT_TV, MSGL_INFO, "Selected device: %s\n", priv->capability.name);
mp_msg(MSGT_TV, MSGL_INFO, " Capabilites: ");
for (i = 0; device_cap2name[i] != NULL; i++)
if (priv->capability.type & (1 << i))
mp_msg(MSGT_TV, MSGL_INFO, "%s ", device_cap2name[i]);
mp_msg(MSGT_TV, MSGL_INFO, "\n");
mp_msg(MSGT_TV, MSGL_INFO, " Device type: %d\n", priv->capability.type);
mp_msg(MSGT_TV, MSGL_INFO, " Supported sizes: %dx%d => %dx%d\n",
priv->capability.minwidth, priv->capability.minheight,
priv->capability.maxwidth, priv->capability.maxheight);
priv->width = priv->capability.minwidth;
priv->height = priv->capability.minheight;
mp_msg(MSGT_TV, MSGL_INFO, " Inputs: %d\n", priv->capability.channels);
priv->channels = (struct video_channel *)malloc(sizeof(struct video_channel)*priv->capability.channels);
if (!priv->channels)
goto malloc_failed;
memset(priv->channels, 0, sizeof(struct video_channel)*priv->capability.channels);
for (i = 0; i < priv->capability.channels; i++)
{
priv->channels[i].channel = i;
if (ioctl(priv->fd, VIDIOCGCHAN, &priv->channels[i]) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno));
break;
}
mp_msg(MSGT_TV, MSGL_INFO, " %d: %s: %s%s%s%s (tuner:%d, norm:%d)\n", i,
priv->channels[i].name,
(priv->channels[i].flags & VIDEO_VC_TUNER) ? "tuner " : "",
(priv->channels[i].flags & VIDEO_VC_AUDIO) ? "audio " : "",
(priv->channels[i].flags & VIDEO_TYPE_TV) ? "tv " : "",
(priv->channels[i].flags & VIDEO_TYPE_CAMERA) ? "camera " : "",
priv->channels[i].tuners,
priv->channels[i].norm);
}
if (priv->capability.audios)
{
mp_msg(MSGT_TV, MSGL_INFO, " Audio devices: %d\n", priv->capability.audios);
priv->act_audio = 0;
for (i = 0; i < priv->capability.audios; i++)
{
priv->audio = realloc(priv->audio, sizeof(struct video_audio)*(i+1));
priv->audio[i].audio = i;
if (ioctl(priv->fd, VIDIOCGAUDIO, &priv->audio[i]) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get audio failed: %s\n", strerror(errno));
break;
}
mp_msg(MSGT_TV, MSGL_V, " %d: %s: ", priv->audio[i].audio,
priv->audio[i].name);
if (priv->audio[i].flags & VIDEO_AUDIO_MUTABLE)
mp_msg(MSGT_TV, MSGL_V, "muted=%s ",
(priv->audio[i].flags & VIDEO_AUDIO_MUTE) ? "yes" : "no");
mp_msg(MSGT_TV, MSGL_V, "volume=%d bass=%d treble=%d balance=%d mode=%s\n",
priv->audio[i].volume, priv->audio[i].bass, priv->audio[i].treble,
priv->audio[i].balance, audio_mode2name[priv->audio[i].mode]);
/* un-mute channels */
priv->audio[i].flags &= ~VIDEO_AUDIO_MUTE;
ioctl(priv->fd, VIDIOCGAUDIO, &priv->audio[i]);
}
}
if (!(priv->capability.type & VID_TYPE_CAPTURE))
{
mp_msg(MSGT_TV, MSGL_ERR, "Only grabbing supported (for overlay use another program)\n");
goto err;
}
/* map grab buffer */
if (ioctl(priv->fd, VIDIOCGMBUF, &priv->mbuf) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get mbuf failed: %s\n", strerror(errno));
goto err;
}
mp_msg(MSGT_TV, MSGL_V, "mbuf: size=%d, frames=%d\n",
priv->mbuf.size, priv->mbuf.frames);
priv->mmap = mmap(0, priv->mbuf.size, PROT_READ|PROT_WRITE,
MAP_SHARED, priv->fd, 0);
if (priv->mmap == (unsigned char *)-1)
{
mp_msg(MSGT_TV, MSGL_ERR, "Unabel to map memory for buffers: %s\n", strerror(errno));
goto err;
}
mp_msg(MSGT_TV, MSGL_DBG2, "our buffer: %p\n", priv->mmap);
/* num of buffers */
priv->nbuf = priv->mbuf.frames;
/* video buffers */
priv->buf = (struct video_mmap *)malloc(priv->nbuf * sizeof(struct video_mmap));
if (!priv->buf)
goto malloc_failed;
memset(priv->buf, 0, priv->nbuf * sizeof(struct video_mmap));
return(1);
malloc_failed:
if (priv->channels)
free(priv->channels);
if (priv->buf)
free(priv->buf);
err:
if (priv->fd != -1)
close(priv->fd);
return(0);
}
static int uninit(priv_t *priv)
{
close(priv->fd);
#warning "Implement uninit!"
return(1);
}
static int start(priv_t *priv)
{
int i;
if (ioctl(priv->fd, VIDIOCGPICT, &priv->picture) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
return(0);
}
priv->picture.palette = format2palette(priv->format);
priv->picture.depth = palette2depth(priv->picture.palette);
priv->bytesperline = priv->width * priv->picture.depth / 8;
mp_msg(MSGT_TV, MSGL_INFO, "Picture values:\n");
mp_msg(MSGT_TV, MSGL_INFO, " Depth: %d, Palette: %d (Format: %s)\n", priv->picture.depth,
priv->picture.palette, vo_format_name(priv->format));
mp_msg(MSGT_TV, MSGL_INFO, " Brightness: %d, Hue: %d, Colour: %d, Contrast: %d\n",
priv->picture.brightness, priv->picture.hue,
priv->picture.colour, priv->picture.contrast);
if (ioctl(priv->fd, VIDIOCSPICT, &priv->picture) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set picture failed: %s\n", strerror(errno));
return(0);
}
priv->nbuf = priv->mbuf.frames;
for (i=0; i < priv->nbuf; i++)
{
priv->buf[i].format = priv->picture.palette;
priv->buf[i].frame = i;
priv->buf[i].width = priv->width;
priv->buf[i].height = priv->height;
mp_msg(MSGT_TV, MSGL_DBG2, "buffer: %d => %p\n", i, &priv->buf[i]);
}
#if 0
{
struct video_play_mode pmode;
pmode.mode = VID_PLAY_NORMAL;
pmode.p1 = 1;
pmode.p2 = 0;
if (ioctl(priv->fd, VIDIOCSPLAYMODE, &pmode) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set play mode failed: %s\n", strerror(errno));
// return(0);
}
}
#endif
#if 0
{
struct video_window win;
win.x = 0;
win.y = 0;
win.width = priv->width;
win.height = priv->height;
win.chromakey = -1;
win.flags = 0;
ioctl(priv->fd, VIDIOCSWIN, &win);
}
/* start capture */
if (ioctl(priv->fd, VIDIOCCAPTURE, &one) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl capture failed: %s\n", strerror(errno));
return(0);
}
#endif
return(1);
}
static int control(priv_t *priv, int cmd, void *arg)
{
mp_msg(MSGT_TV, MSGL_DBG2, "debug: control(priv=%p, cmd=%d, arg=%p)\n",
priv, cmd, arg);
switch(cmd)
{
/* ========== GENERIC controls =========== */
case TVI_CONTROL_IS_VIDEO:
{
if (priv->capability.type & VID_TYPE_CAPTURE)
return(TVI_CONTROL_TRUE);
return(TVI_CONTROL_FALSE);
}
case TVI_CONTROL_IS_AUDIO:
#if 0 /* also disable audio for as it's not working! */
if (priv->channels[priv->act_channel].flags & VIDEO_VC_AUDIO)
return(TVI_CONTROL_TRUE);
#endif
return(TVI_CONTROL_FALSE);
case TVI_CONTROL_IS_TUNER:
{
// if (priv->capability.type & VID_TYPE_TUNER)
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
return(TVI_CONTROL_TRUE);
return(TVI_CONTROL_FALSE);
}
/* ========== VIDEO controls =========== */
case TVI_CONTROL_VID_GET_FORMAT:
{
int output_fmt = -1;
output_fmt = priv->format;
(int)*(void **)arg = output_fmt;
mp_msg(MSGT_TV, MSGL_INFO, "Output format: %s\n", vo_format_name(output_fmt));
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_VID_SET_FORMAT:
priv->format = (int)*(void **)arg;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_PLANES:
(int)*(void **)arg = 1; /* FIXME, also not needed at this time */
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_BITS:
(int)*(void **)arg = palette2depth(format2palette(priv->format));
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_WIDTH:
(int)*(void **)arg = priv->width;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_CHK_WIDTH:
{
int req_width = (int)*(void **)arg;
mp_msg(MSGT_TV, MSGL_INFO, "Requested width: %d\n", req_width);
if ((req_width >= priv->capability.minwidth) &&
(req_width <= priv->capability.maxwidth))
return(TVI_CONTROL_TRUE);
return(TVI_CONTROL_FALSE);
}
case TVI_CONTROL_VID_SET_WIDTH:
priv->width = (int)*(void **)arg;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_HEIGHT:
(int)*(void **)arg = priv->height;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_CHK_HEIGHT:
{
int req_height = (int)*(void **)arg;
mp_msg(MSGT_TV, MSGL_INFO, "Requested height: %d\n", req_height);
if ((req_height >= priv->capability.minheight) &&
(req_height <= priv->capability.maxheight))
return(TVI_CONTROL_TRUE);
return(TVI_CONTROL_FALSE);
}
case TVI_CONTROL_VID_SET_HEIGHT:
priv->height = (int)*(void **)arg;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_PICTURE:
if (ioctl(priv->fd, VIDIOCGPICT, &priv->picture) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_PICTURE:
if (ioctl(priv->fd, VIDIOCSPICT, &priv->picture) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_BRIGHTNESS:
priv->picture.brightness = (int)*(void **)arg;
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_HUE:
priv->picture.hue = (int)*(void **)arg;
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_SATURATION:
priv->picture.colour = (int)*(void **)arg;
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_CONTRAST:
priv->picture.contrast = (int)*(void **)arg;
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
return(TVI_CONTROL_TRUE);
/* ========== TUNER controls =========== */
case TVI_CONTROL_TUN_GET_FREQ:
{
unsigned long freq;
if (ioctl(priv->fd, VIDIOCGFREQ, &freq) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get freq failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
/* tuner uses khz not mhz ! */
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
// freq /= 1000;
(unsigned long)*(void **)arg = freq;
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_TUN_SET_FREQ:
{
/* argument is in MHz ! */
unsigned long freq = (unsigned long)*(void **)arg;
mp_msg(MSGT_TV, MSGL_V, "requested frequency: %.3f\n", (float)freq/16);
/* tuner uses khz not mhz ! */
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
// freq *= 1000;
// mp_msg(MSGT_TV, MSGL_V, " requesting from driver: freq=%.3f\n", (float)freq/16);
if (ioctl(priv->fd, VIDIOCSFREQ, &freq) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set freq failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_TUN_GET_TUNER:
{
if (ioctl(priv->fd, VIDIOCGTUNER, &priv->tuner) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get tuner failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
mp_msg(MSGT_TV, MSGL_INFO, "Tuner (%s) range: %lu -> %lu\n", priv->tuner.name,
priv->tuner.rangelow, priv->tuner.rangehigh);
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_TUN_SET_TUNER:
{
if (ioctl(priv->fd, VIDIOCSTUNER, &priv->tuner) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get tuner failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_TUN_SET_NORM:
{
int req_mode = (int)*(void **)arg;
if ((!(priv->tuner.flags & VIDEO_TUNER_NORM)) ||
((req_mode == VIDEO_MODE_PAL) && !(priv->tuner.flags & VIDEO_TUNER_PAL)) ||
((req_mode == VIDEO_MODE_NTSC) && !(priv->tuner.flags & VIDEO_TUNER_NTSC)) ||
((req_mode == VIDEO_MODE_SECAM) && !(priv->tuner.flags & VIDEO_TUNER_SECAM)))
{
mp_msg(MSGT_TV, MSGL_ERR, "Tuner isn't capable to set norm!\n");
return(TVI_CONTROL_FALSE);
}
priv->tuner.mode = req_mode;
if (control(priv->fd, TVI_CONTROL_TUN_SET_TUNER, &priv->tuner) != TVI_CONTROL_TRUE)
return(TVI_CONTROL_FALSE);
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_TUN_GET_NORM:
{
(int)*(void **)arg = priv->tuner.mode;
return(TVI_CONTROL_TRUE);
}
/* ========== AUDIO controls =========== */
case TVI_CONTROL_AUD_GET_FORMAT:
{
(int)*(void **)arg = AFMT_S16_LE;
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_AUD_GET_CHANNELS:
{
(int)*(void **)arg = 2;
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_AUD_GET_SAMPLERATE:
{
(int)*(void **)arg = 44100;
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_AUD_GET_SAMPLESIZE:
{
(int)*(void **)arg = 76000;
return(TVI_CONTROL_TRUE);
}
/* ========== SPECIFIC controls =========== */
case TVI_CONTROL_SPC_GET_INPUT:
{
int req_chan = (int)*(void **)arg;
int i;
for (i = 0; i < priv->capability.channels; i++)
{
if (priv->channels[i].channel == req_chan)
break;
}
priv->act_channel = i;
if (ioctl(priv->fd, VIDIOCGCHAN, &priv->channels[i]) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_SPC_SET_INPUT:
{
struct video_channel chan;
int req_chan = (int)*(void **)arg;
int i;
if (req_chan >= priv->capability.channels)
{
mp_msg(MSGT_TV, MSGL_ERR, "Invalid input requested: %d, valid: 0-%d\n",
req_chan, priv->capability.channels);
return(TVI_CONTROL_FALSE);
}
for (i = 0; i < priv->capability.channels; i++)
{
if (priv->channels[i].channel == req_chan)
chan = priv->channels[i];
}
if (ioctl(priv->fd, VIDIOCSCHAN, &chan) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno));
return(TVI_CONTROL_FALSE);
}
mp_msg(MSGT_TV, MSGL_INFO, "Using input '%s'\n", chan.name);
priv->act_channel = i;
/* update tuner state */
// if (priv->capability.type & VID_TYPE_TUNER)
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
control(priv, TVI_CONTROL_TUN_GET_TUNER, 0);
/* update local channel list */
control(priv, TVI_CONTROL_SPC_GET_INPUT, &req_chan);
return(TVI_CONTROL_TRUE);
}
}
return(TVI_CONTROL_UNKNOWN);
}
static int grab_video_frame(priv_t *priv, char *buffer, int len)
{
int frame = priv->queue % priv->nbuf;
int nextframe = (priv->queue+1) % priv->nbuf;
mp_dbg(MSGT_TV, MSGL_DBG2, "grab_video_frame(priv=%p, buffer=%p, len=%d)\n",
priv, buffer, len);
mp_dbg(MSGT_TV, MSGL_DBG3, "buf: %p + frame: %d => %p\n",
priv->buf, nextframe, &priv->buf[nextframe]);
if (ioctl(priv->fd, VIDIOCMCAPTURE, &priv->buf[nextframe]) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, "ioctl mcapture failed: %s\n", strerror(errno));
return(0);
}
while (ioctl(priv->fd, VIDIOCSYNC, &priv->buf[frame].frame) < 0 &&
(errno == EAGAIN || errno == EINTR));
mp_dbg(MSGT_TV, MSGL_DBG3, "picture sync failed\n");
priv->queue++;
mp_dbg(MSGT_TV, MSGL_DBG3, "mmap: %p + offset: %d => %p\n",
priv->mmap, priv->mbuf.offsets[frame],
priv->mmap+priv->mbuf.offsets[frame]);
/* XXX also directrendering would be nicer! */
/* 3 times copying the same picture to other buffer :( */
/* copy the actual frame */
memcpy(buffer, priv->mmap+priv->mbuf.offsets[frame], len);
return(len);
}
static int get_video_framesize(priv_t *priv)
{
return(priv->bytesperline * priv->height);
}
static int grab_audio_frame(priv_t *priv, char *buffer, int len)
{
return(65536);
}
static int get_audio_framesize(priv_t *priv)
{
return(65536);
}
#endif /* USE_TV */
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