static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb,
- AVStream *st, int mode)
+ AVStream *st, int mode, int *h_width, int *h_height)
{
int i;
int ret = 0;
AVDictionaryEntry *tag;
MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
+ *h_width = 1;
+ *h_height = 1;
// convert metadata into proper side data and add it to the stream
if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
}
}
+ // iterate to find the stereo3d side data
for (i = 0; i < st->nb_side_data; i++) {
AVPacketSideData sd = st->side_data[i];
if (sd.type == AV_PKT_DATA_STEREO3D) {
format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT
: MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT;
+ *h_width = 2;
break;
case AV_STEREO3D_TOPBOTTOM:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
+ *h_height = 2;
break;
case AV_STEREO3D_CHECKERBOARD:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR;
format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
+ *h_height = 2;
break;
case AV_STEREO3D_COLUMNS:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
+ *h_width = 2;
break;
case AV_STEREO3D_FRAMESEQUENCE:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR;
format++;
break;
}
- ret = stereo->type;
-
break;
}
}
if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
return ret;
+ // if webm, do not write unsupported modes
if ((mode == MODE_WEBM &&
format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM &&
format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT)
return AVERROR(EINVAL);
}
+ // write StereoMode if format is valid
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format);
return ret;
// check both side data and metadata for stereo information,
// write the result to the bitstream if any is found
- ret = mkv_write_stereo_mode(s, pb, st, mkv->mode);
+ ret = mkv_write_stereo_mode(s, pb, st, mkv->mode,
+ &display_width_div,
+ &display_height_div);
if (ret < 0)
return ret;
- switch (ret) {
- case AV_STEREO3D_SIDEBYSIDE:
- case AV_STEREO3D_COLUMNS:
- display_width_div = 2;
- break;
- case AV_STEREO3D_TOPBOTTOM:
- case AV_STEREO3D_LINES:
- display_height_div = 2;
- break;
- }
-
if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||
(codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1);
}
+ // write DisplayWidth and DisplayHeight, they contain the size of
+ // a single source view and/or the display aspect ratio
if (st->sample_aspect_ratio.num) {
int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
if (d_width > INT_MAX) {
uint32_t color_space = av_le2ne32(codec->codec_tag);
put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
}
+
end_ebml_master(pb, subinfo);
break;
if (!s->pb->seekable) {
if (!mkv->dyn_bc) {
- if ((ret = avio_open_dyn_buf(&mkv->dyn_bc)) < 0) {
+ ret = avio_open_dyn_buf(&mkv->dyn_bc);
+ if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n");
return ret;
}