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matroska: Handle interlaced field order

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This commit is contained in:
Doug Nazar 2019-08-07 10:01:34 -04:00 committed by Sebastian Dröge
parent 5f01b9da05
commit b0534c65d1
4 changed files with 85 additions and 1 deletions
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45
gst/matroska/matroska-demux.c
View file

@ -974,6 +974,44 @@ gst_matroska_demux_parse_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml,
break;
}
/* interlaced field order */
case GST_MATROSKA_ID_VIDEOFIELDORDER:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
break;
if (videocontext->interlace_mode !=
GST_MATROSKA_INTERLACE_MODE_INTERLACED) {
GST_WARNING_OBJECT (demux,
"FieldOrder element when not interlaced - ignoring");
break;
}
if (num == 0)
/* turns out we're actually progressive */
videocontext->interlace_mode =
GST_MATROSKA_INTERLACE_MODE_PROGRESSIVE;
else if (num == 2)
videocontext->field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
else if (num == 9)
videocontext->field_order =
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
else if (num == 14)
videocontext->field_order =
GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
else {
GST_FIXME_OBJECT (demux,
"Unknown or unsupported FieldOrder %" G_GUINT64_FORMAT,
num);
videocontext->field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
}
GST_DEBUG_OBJECT (demux, "video track field order: %d",
videocontext->field_order);
break;
}
/* aspect ratio behaviour */
case GST_MATROSKA_ID_VIDEOASPECTRATIOTYPE:{
guint64 num;
@ -6437,7 +6475,12 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
break;
case GST_MATROSKA_INTERLACE_MODE_INTERLACED:
gst_structure_set (structure,
"interlace-mode", G_TYPE_STRING, "mixed", NULL);
"interlace-mode", G_TYPE_STRING, "interleaved", NULL);
if (videocontext->field_order != GST_VIDEO_FIELD_ORDER_UNKNOWN)
gst_structure_set (structure, "field-order", G_TYPE_STRING,
gst_video_field_order_to_string (videocontext->field_order),
NULL);
break;
default:
break;

1
gst/matroska/matroska-ids.c
View file

@ -59,6 +59,7 @@ gst_matroska_track_init_video_context (GstMatroskaTrackContext ** p_context)
video_context->fourcc = 0;
video_context->default_fps = 0.0;
video_context->interlace_mode = GST_MATROSKA_INTERLACE_MODE_UNKNOWN;
video_context->field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
video_context->earliest_time = GST_CLOCK_TIME_NONE;
video_context->dirac_unit = NULL;
video_context->earliest_time = GST_CLOCK_TIME_NONE;

2
gst/matroska/matroska-ids.h
View file

@ -132,6 +132,7 @@
#define GST_MATROSKA_ID_VIDEOPIXELCROPLEFT 0x54CC
#define GST_MATROSKA_ID_VIDEOPIXELCROPRIGHT 0x54DD
#define GST_MATROSKA_ID_VIDEOFLAGINTERLACED 0x9A
#define GST_MATROSKA_ID_VIDEOFIELDORDER 0x9D
/* semi-draft */
#define GST_MATROSKA_ID_VIDEOSTEREOMODE 0x53B8
#define GST_MATROSKA_ID_VIDEOASPECTRATIOTYPE 0x54B3
@ -632,6 +633,7 @@ typedef struct _GstMatroskaTrackVideoContext {
guint32 fourcc;
GstMatroskaInterlaceMode interlace_mode;
GstVideoFieldOrder field_order;
GstVideoMultiviewMode multiview_mode;
GstVideoMultiviewFlags multiview_flags;

38
gst/matroska/matroska-parse.c
View file

@ -557,6 +557,44 @@ gst_matroska_parse_add_stream (GstMatroskaParse * parse, GstEbmlRead * ebml)
break;
}
/* interlaced field order */
case GST_MATROSKA_ID_VIDEOFIELDORDER:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
break;
if (videocontext->interlace_mode !=
GST_MATROSKA_INTERLACE_MODE_INTERLACED) {
GST_WARNING_OBJECT (parse,
"FieldOrder element when not interlaced - ignoring");
break;
}
if (num == 0)
/* turns out we're actually progressive */
videocontext->interlace_mode =
GST_MATROSKA_INTERLACE_MODE_PROGRESSIVE;
else if (num == 2)
videocontext->field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
else if (num == 9)
videocontext->field_order =
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST;
else if (num == 14)
videocontext->field_order =
GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST;
else {
GST_FIXME_OBJECT (parse,
"Unknown or unsupported FieldOrder %" G_GUINT64_FORMAT,
num);
videocontext->field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
}
GST_DEBUG_OBJECT (parse, "video track field order: %d",
videocontext->field_order);
break;
}
/* aspect ratio behaviour */
case GST_MATROSKA_ID_VIDEOASPECTRATIOTYPE:{
guint64 num;