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matroskaenc: convert avstream stereo3d side data during encoding

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Write the StereoMode Embl to bitstream.
This commit is contained in:
Vittorio Giovara 2014-08-05 11:16:17 +01:00
parent d4ae8ac92f
commit 4d686fb721
1 changed files with 76 additions and 18 deletions
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94
libavformat/matroskaenc.c
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@ -43,6 +43,7 @@
#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavutil/samplefmt.h"
#include "libavutil/stereo3d.h"
#include "libavcodec/xiph.h"
#include "libavcodec/mpeg4audio.h"
@ -624,25 +625,78 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
return ret;
}
static void mkv_write_stereo_mode(AVIOContext *pb, uint8_t stereo_fmt,
int mode)
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb,
AVStream *st, int mode)
{
int valid_fmt = 0;
int i;
AVDictionaryEntry *tag;
MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
switch (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;
// convert metadata into proper side data and add it to the stream
if ((tag = av_dict_get(s->metadata, "stereo_mode", NULL, 0))) {
int stereo_mode = atoi(tag->value);
if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
stereo_mode != 10 && stereo_mode != 12) {
int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
if (ret < 0)
return ret;
}
}
if (valid_fmt)
put_ebml_uint (pb, MATROSKA_ID_VIDEOSTEREOMODE, stereo_fmt);
for (i = 0; i < st->nb_side_data; i++) {
AVPacketSideData sd = st->side_data[i];
if (sd.type == AV_PKT_DATA_STEREO3D) {
AVStereo3D *stereo = (AVStereo3D *)sd.data;
switch (stereo->type) {
case AV_STEREO3D_2D:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_MONO;
break;
case AV_STEREO3D_SIDEBYSIDE:
format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT
: MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT;
break;
case AV_STEREO3D_TOPBOTTOM:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
break;
case AV_STEREO3D_CHECKERBOARD:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
break;
case AV_STEREO3D_LINES:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
break;
case AV_STEREO3D_COLUMNS:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format--;
break;
case AV_STEREO3D_FRAMESEQUENCE:
format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR;
if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
format++;
break;
}
break;
}
}
if (mode == MODE_WEBM &&
(format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM &&
format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT))
format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
if (format < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format);
return 0;
}
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
@ -743,9 +797,13 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
if ((tag = av_dict_get(s->metadata, "stereo_mode", NULL, 0))) {
mkv_write_stereo_mode(pb, atoi(tag->value), mkv->mode);
}
// 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);
if (ret < 0)
return ret;
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);