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matroska: Support interlaced content correctly

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The matroska specification now has two elements for it.
This commit is contained in:
Luca Barbato 2016-03-28 20:29:54 +02:00
parent 44f05f15d4
commit 5f02266681
2 changed files with 43 additions and 1 deletions
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16
libavformat/matroska.h
View File

@ -113,6 +113,7 @@
#define MATROSKA_ID_VIDEOPIXELCROPR 0x54DD
#define MATROSKA_ID_VIDEODISPLAYUNIT 0x54B2
#define MATROSKA_ID_VIDEOFLAGINTERLACED 0x9A
#define MATROSKA_ID_VIDEOFIELDORDER 0x9D
#define MATROSKA_ID_VIDEOSTEREOMODE 0x53B8
#define MATROSKA_ID_VIDEOASPECTRATIO 0x54B3
#define MATROSKA_ID_VIDEOCOLORSPACE 0x2EB524
@ -221,6 +222,21 @@ typedef enum {
MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP = 3,
} MatroskaTrackEncodingCompAlgo;
typedef enum {
MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED = 0,
MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED = 1,
MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE = 2
} MatroskaVideoInterlaceFlag;
typedef enum {
MATROSKA_VIDEO_FIELDORDER_PROGRESSIVE = 0,
MATROSKA_VIDEO_FIELDORDER_UNDETERMINED = 2,
MATROSKA_VIDEO_FIELDORDER_TT = 1,
MATROSKA_VIDEO_FIELDORDER_BB = 6,
MATROSKA_VIDEO_FIELDORDER_BT = 9,
MATROSKA_VIDEO_FIELDORDER_TB = 14,
} MatroskaVideoFieldOrder;
typedef enum {
MATROSKA_VIDEO_STEREOMODE_TYPE_MONO = 0,
MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT = 1,

28
libavformat/matroskadec.c
View File

@ -123,6 +123,8 @@ typedef struct MatroskaTrackVideo {
uint64_t pixel_width;
uint64_t pixel_height;
uint64_t fourcc;
uint64_t interlaced;
uint64_t field_order;
uint64_t stereo_mode;
} MatroskaTrackVideo;
@ -319,7 +321,8 @@ static EbmlSyntax matroska_track_video[] = {
{ MATROSKA_ID_VIDEOPIXELCROPL, EBML_NONE },
{ MATROSKA_ID_VIDEOPIXELCROPR, EBML_NONE },
{ MATROSKA_ID_VIDEODISPLAYUNIT, EBML_NONE },
{ MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_NONE },
{ MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_UINT, 0, offsetof(MatroskaTrackVideo, interlaced), { .u = MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED } },
{ MATROSKA_ID_VIDEOFIELDORDER, EBML_UINT, 0, offsetof(MatroskaTrackVideo, field_order), { .u = MATROSKA_VIDEO_FIELDORDER_UNDETERMINED } },
{ MATROSKA_ID_VIDEOSTEREOMODE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, stereo_mode), { .u = MATROSKA_VIDEO_STEREOMODE_TYPE_NB } },
{ MATROSKA_ID_VIDEOASPECTRATIO, EBML_NONE },
{ 0 }
@ -1525,6 +1528,26 @@ static int matroska_parse_flac(AVFormatContext *s,
return 0;
}
static int mkv_field_order(int64_t field_order)
{
switch (field_order) {
case MATROSKA_VIDEO_FIELDORDER_PROGRESSIVE:
return AV_FIELD_PROGRESSIVE;
case MATROSKA_VIDEO_FIELDORDER_UNDETERMINED:
return AV_FIELD_UNKNOWN;
case MATROSKA_VIDEO_FIELDORDER_TT:
return AV_FIELD_TT;
case MATROSKA_VIDEO_FIELDORDER_BB:
return AV_FIELD_BB;
case MATROSKA_VIDEO_FIELDORDER_BT:
return AV_FIELD_BT;
case MATROSKA_VIDEO_FIELDORDER_TB:
return AV_FIELD_TB;
default:
return AV_FIELD_UNKNOWN;
}
}
static void mkv_stereo_mode_display_mul(int stereo_mode,
int *h_width, int *h_height)
{
@ -1850,6 +1873,9 @@ static int matroska_parse_tracks(AVFormatContext *s)
st->codecpar->width = track->video.pixel_width;
st->codecpar->height = track->video.pixel_height;
if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED)
st->codecpar->field_order = mkv_field_order(track->video.field_order);
if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
mkv_stereo_mode_display_mul(track->video.stereo_mode, &display_width_mul, &display_height_mul);