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restore audio settings - use all the frame buffers provided by the driver

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Originally committed as revision 127 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2001-09-16 21:49:48 +00:00
parent 813cae4bc4
commit 5a56c87c10
1 changed files with 7 additions and 3 deletions
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10
libav/grab.c
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@ -42,7 +42,7 @@ static struct video_capability video_cap;
static UINT8 *video_buf;
static struct video_mbuf gb_buffers;
static struct video_mmap gb_buf;
static struct video_audio audio;
static struct video_audio audio, audio_saved;
static int gb_frame = 0;
static int v4l_init(URLContext *h)
@ -73,6 +73,7 @@ static int v4l_init(URLContext *h)
/* unmute audio */
ioctl(video_fd, VIDIOCGAUDIO, &audio);
memcpy(&audio_saved, &audio, sizeof(audio));
audio.flags &= ~VIDEO_AUDIO_MUTE;
ioctl(video_fd, VIDIOCSAUDIO, &audio);
@ -132,7 +133,7 @@ static int v4l_init(URLContext *h)
s->time_frame = gettime();
/* start to grab the first frame */
gb_buf.frame = 1 - gb_frame;
gb_buf.frame = (gb_frame + 1) % gb_buffers.frames;
gb_buf.height = height;
gb_buf.width = width;
gb_buf.format = VIDEO_PALETTE_YUV420P;
@ -196,7 +197,7 @@ static int v4l_mm_read_picture(URLContext *h, UINT8 *buf)
perror("VIDIOCMCAPTURE");
return -EIO;
}
gb_frame = 1 - gb_frame;
gb_frame = (gb_frame + 1) % gb_buffers.frames;
while (ioctl(s->fd, VIDIOCSYNC, &gb_frame) < 0 &&
(errno == EAGAIN || errno == EINTR));
@ -301,6 +302,9 @@ static int video_close(URLContext *h)
{
VideoData *s = h->priv_data;
/* restore audio settings */
ioctl(s->fd, VIDIOCSAUDIO, &audio_saved);
close(s->fd);
free(s);
return 0;