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avformat/matroska: Add macro for stereomode<->AVStereo3D correspondence

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It will allow to create tables for easy conversion from AVStereo3D
to stereomode and back again as well as derive the properties
of a given stereomode.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-08-11 02:48:58 +02:00
parent 3fc9ed8497
commit 230312b3c8
1 changed files with 37 additions and 0 deletions
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37
libavformat/matroska.h
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@ -386,6 +386,43 @@ typedef struct CodecTags{
extern const CodecTags ff_mkv_codec_tags[];
extern const CodecTags ff_webm_codec_tags[];
extern const AVMetadataConv ff_mkv_metadata_conv[];
/* The following macro contains all the information about which
* MATROSKA_VIDEO_STEREOMODE_TYPE_* correspond to which AVStereo3D
* structures and also the relevant horizontal/vertical divisors
* as well as WebM compatibility.
*
* MAP and MKV_ONLY are macros to be provided by the user.
* MAP(MatroskaVideoStereoModeType, AVStereo3DType, AV_STEREO3D_FLAG_*,
* HALF_WIDTH, HALF_HEIGHT, WebM-compatibility)
* is for the stereo modes that have a Stereo3D counterpart.
* MKV_ONLY(MatroskaVideoStereoModeType, HALF_WIDTH, HALF_HEIGHT, WebM)
* is for those that don't have a Stereo3D counterpart.
* */
#define STEREOMODE_STEREO3D_MAPPING(MAP, MKV_ONLY) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_MONO, AV_STEREO3D_2D, 0, 0, 0, 1) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT, AV_STEREO3D_SIDEBYSIDE, 0, 1, 0, 1) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_BOTTOM_TOP, AV_STEREO3D_TOPBOTTOM, \
AV_STEREO3D_FLAG_INVERT, 0, 1, 1) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM, AV_STEREO3D_TOPBOTTOM, 0, 0, 1, 1) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_RL, AV_STEREO3D_CHECKERBOARD, \
AV_STEREO3D_FLAG_INVERT, 0, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR, AV_STEREO3D_CHECKERBOARD, 0, 0, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_RL, AV_STEREO3D_LINES, \
AV_STEREO3D_FLAG_INVERT, 0, 1, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR, AV_STEREO3D_LINES, 0, 0, 1, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_RL, AV_STEREO3D_COLUMNS, \
AV_STEREO3D_FLAG_INVERT, 1, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR, AV_STEREO3D_COLUMNS, 0, 1, 0, 0) \
MKV_ONLY(MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_CYAN_RED, 0, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT, AV_STEREO3D_SIDEBYSIDE, \
AV_STEREO3D_FLAG_INVERT, 1, 0, 1) \
MKV_ONLY(MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_GREEN_MAG, 0, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR, AV_STEREO3D_FRAMESEQUENCE, \
0, 0, 0, 0) \
MAP(MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL, AV_STEREO3D_FRAMESEQUENCE, \
AV_STEREO3D_FLAG_INVERT, 0, 0, 0)
extern const char * const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB];
/* AVStream Metadata tag keys for WebM Dash Manifest */