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authorAlok Ahuja <waveletcoeff@gmail.com>2011-04-23 22:29:13 -0700
committerMichael Niedermayer <michaelni@gmx.at>2011-05-21 17:23:29 +0200
commit8dd12b077b9f6c8437f387195feaefa806f93957 (patch)
tree1f99af5a956dfd0029d889d8d9555e675cfa4757 /libavformat/matroskaenc.c
parenta38a00eddf200e18c6cf3ba090beaa3b224bd114 (diff)
Create a stereo_mode metadata tag to specify the stereo 3d video layout using the StereoMode tag in a matroska/webm video track.
Diffstat (limited to 'libavformat/matroskaenc.c')
-rw-r--r--libavformat/matroskaenc.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 387cead8cd..5ac2fd4896 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -586,6 +586,25 @@ static int mkv_write_tracks(AVFormatContext *s)
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
+ if ((tag = av_metadata_get(s->metadata, "stereo_mode", NULL, 0))) {
+ uint8_t stereo_fmt = atoi(tag->value);
+ int valid_fmt = 0;
+
+ switch (mkv->mode) {
+ case MODE_WEBM:
+ if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM
+ || stereo_fmt == MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT)
+ valid_fmt = 1;
+ break;
+ case MODE_MATROSKAv2:
+ if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL)
+ valid_fmt = 1;
+ break;
+ }
+
+ if (valid_fmt)
+ put_ebml_uint (pb, MATROSKA_ID_VIDEOSTEREOMODE, stereo_fmt);
+ }
if (st->sample_aspect_ratio.num) {
int d_width = codec->width*av_q2d(st->sample_aspect_ratio);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width);