diff options
author | Anton Khirnov <anton@khirnov.net> | 2011-05-23 23:21:59 +0400 |
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committer | Anton Khirnov <anton@khirnov.net> | 2011-05-25 17:55:46 +0400 |
commit | a861ffeffa40dfc4f3d20c221c1accca99db23df (patch) | |
tree | 501ded3741602bb6a9a55b7610e6a5d26d53ed20 /libavdevice/v4l.c | |
parent | eb040dbbd39898f03e5057a21b0981a8ffe9f37b (diff) |
v4l: add a private option for video standard.
Diffstat (limited to 'libavdevice/v4l.c')
-rw-r--r-- | libavdevice/v4l.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/libavdevice/v4l.c b/libavdevice/v4l.c index d97282b7e7..8c1134536a 100644 --- a/libavdevice/v4l.c +++ b/libavdevice/v4l.c @@ -23,6 +23,8 @@ #include "config.h" #include "libavutil/rational.h" #include "libavutil/imgutils.h" +#include "libavutil/log.h" +#include "libavutil/opt.h" #include "libavformat/avformat.h" #include "libavcodec/dsputil.h" #include <unistd.h> @@ -36,6 +38,7 @@ #include <strings.h> typedef struct { + AVClass *class; int fd; int frame_format; /* see VIDEO_PALETTE_xxx */ int use_mmap; @@ -49,6 +52,7 @@ typedef struct { struct video_mbuf gb_buffers; struct video_mmap gb_buf; int gb_frame; + int standard; } VideoData; static const struct { @@ -131,13 +135,16 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap) } /* set tv standard */ - if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) { - if (!strcasecmp(ap->standard, "pal")) - tuner.mode = VIDEO_MODE_PAL; - else if (!strcasecmp(ap->standard, "secam")) - tuner.mode = VIDEO_MODE_SECAM; - else - tuner.mode = VIDEO_MODE_NTSC; + if (!ioctl(video_fd, VIDIOCGTUNER, &tuner)) { + if (ap->standard) { + if (!strcasecmp(ap->standard, "pal")) + s->standard = VIDEO_MODE_PAL; + else if (!strcasecmp(ap->standard, "secam")) + s->standard = VIDEO_MODE_SECAM; + else + s->standard = VIDEO_MODE_NTSC; + } + tuner.mode = s->standard; ioctl(video_fd, VIDIOCSTUNER, &tuner); } @@ -333,6 +340,21 @@ static int grab_read_close(AVFormatContext *s1) return 0; } +static const AVOption options[] = { + { "standard", "", offsetof(VideoData, standard), FF_OPT_TYPE_INT, {.dbl = VIDEO_MODE_NTSC}, VIDEO_MODE_PAL, VIDEO_MODE_NTSC, AV_OPT_FLAG_DECODING_PARAM, "standard" }, + { "PAL", "", 0, FF_OPT_TYPE_CONST, {.dbl = VIDEO_MODE_PAL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, + { "SECAM", "", 0, FF_OPT_TYPE_CONST, {.dbl = VIDEO_MODE_SECAM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, + { "NTSC", "", 0, FF_OPT_TYPE_CONST, {.dbl = VIDEO_MODE_NTSC}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" }, + { NULL }, +}; + +static const AVClass v4l_class = { + .class_name = "V4L indev", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVInputFormat ff_v4l_demuxer = { "video4linux", NULL_IF_CONFIG_SMALL("Video4Linux device grab"), @@ -342,4 +364,5 @@ AVInputFormat ff_v4l_demuxer = { grab_read_packet, grab_read_close, .flags = AVFMT_NOFILE, + .priv_class = &v4l_class, }; |