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| author | Anton Khirnov <anton@khirnov.net> | 2011-05-23 21:53:44 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2011-05-25 15:55:47 +0200 |
| commit | a02fd06ab76c0abd7ef32f332a08177e6014b3a8 (patch) | |
| tree | 117bec77b50e389adbdd8ceb38be64b5df95d479 | |
| parent | fc68a8f7030227fc4fa8d83b9051aaf598cd12dd (diff) | |
| download | ffmpeg-a02fd06ab76c0abd7ef32f332a08177e6014b3a8.tar.gz | |
v4l2: add a private option for channel.
| -rw-r--r-- | libavdevice/v4l2.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c index 1c3059d850..59af2c83ec 100644 --- a/libavdevice/v4l2.c +++ b/libavdevice/v4l2.c @@ -68,6 +68,7 @@ struct video_data { void **buf_start; unsigned int *buf_len; char *standard; + int channel; }; struct buff_data { @@ -452,23 +453,24 @@ static int v4l2_set_parameters(AVFormatContext *s1, AVFormatParameters *ap) streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - if (ap->channel>=0) { + if (ap->channel > 0) + s->channel = ap->channel; + /* set tv video input */ memset (&input, 0, sizeof (input)); - input.index = ap->channel; + input.index = s->channel; if (ioctl(s->fd, VIDIOC_ENUMINPUT, &input) < 0) { av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl enum input failed:\n"); return AVERROR(EIO); } av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set input_id: %d, input: %s\n", - ap->channel, input.name); + s->channel, input.name); if (ioctl(s->fd, VIDIOC_S_INPUT, &input.index) < 0) { av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl set input(%d) failed\n", - ap->channel); + s->channel); return AVERROR(EIO); } - } #if FF_API_FORMAT_PARAMETERS if (ap->standard) { @@ -694,6 +696,7 @@ static int v4l2_read_close(AVFormatContext *s1) static const AVOption options[] = { { "standard", "", offsetof(struct video_data, standard), FF_OPT_TYPE_STRING, {.str = "NTSC" }, 0, 0, AV_OPT_FLAG_DECODING_PARAM }, + { "channel", "", offsetof(struct video_data, channel), FF_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, { NULL }, }; |