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codecparsers: h264: add support for Frame Packing Arrangement SEI message.

Browse source 
This parses the frame_packing_arragement() payload in SEI message.
This information can be used by decoders to appropriately rearrange the
samples which belong to Stereoscopic and Multiview High profiles.

https://bugzilla.gnome.org/show_bug.cgi?id=685215

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Sreerenj Balachandran 2014-03-25 14:08:44 +01:00 committed by Jan Schmidt
parent 51f003e469
commit 3776e78ae6
3 changed files with 114 additions and 1 deletions
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62
gst-libs/gst/codecparsers/gsth264parser.c
View file

@ -1076,6 +1076,64 @@ error:
return GST_H264_PARSER_ERROR;
}
/* Parse SEI frame_packing_arrangement() message */
static GstH264ParserResult
gst_h264_parser_parse_frame_packing (GstH264NalParser * nalparser,
GstH264FramePacking * frame_packing, NalReader * nr, guint payload_size)
{
guint8 frame_packing_extension_flag;
guint start_pos;
GST_DEBUG ("parsing \"Frame Packing Arrangement\"");
start_pos = nal_reader_get_pos (nr);
READ_UE (nr, frame_packing->frame_packing_id);
READ_UINT8 (nr, frame_packing->frame_packing_cancel_flag, 1);
if (!frame_packing->frame_packing_cancel_flag) {
READ_UINT8 (nr, frame_packing->frame_packing_type, 7);
READ_UINT8 (nr, frame_packing->quincunx_sampling_flag, 1);
READ_UINT8 (nr, frame_packing->content_interpretation_type, 6);
READ_UINT8 (nr, frame_packing->spatial_flipping_flag, 1);
READ_UINT8 (nr, frame_packing->frame0_flipped_flag, 1);
READ_UINT8 (nr, frame_packing->field_views_flag, 1);
READ_UINT8 (nr, frame_packing->current_frame_is_frame0_flag, 1);
READ_UINT8 (nr, frame_packing->frame0_self_contained_flag, 1);
READ_UINT8 (nr, frame_packing->frame1_self_contained_flag, 1);
if (!frame_packing->quincunx_sampling_flag &&
frame_packing->frame_packing_type !=
GST_H264_FRAME_PACKING_TEMPORAL_INTERLEAVING) {
READ_UINT8 (nr, frame_packing->frame0_grid_position_x, 4);
READ_UINT8 (nr, frame_packing->frame0_grid_position_y, 4);
READ_UINT8 (nr, frame_packing->frame1_grid_position_x, 4);
READ_UINT8 (nr, frame_packing->frame1_grid_position_y, 4);
}
/* Skip frame_packing_arrangement_reserved_byte */
if (!nal_reader_skip (nr, 8))
goto error;
READ_UE_ALLOWED (nr, frame_packing->frame_packing_repetition_period, 0,
16384);
}
/* All data that follows within a frame packing arrangement SEI message
after the value 1 for frame_packing_arrangement_extension_flag shall
be ignored (D.2.25) */
READ_UINT8 (nr, frame_packing_extension_flag, 1);
if (!frame_packing_extension_flag)
goto error;
nal_reader_skip_long (nr,
payload_size - (nal_reader_get_pos (nr) - start_pos));
return GST_H264_PARSER_OK;
error:
GST_WARNING ("error parsing \"Frame Packing Arrangement\"");
return GST_H264_PARSER_ERROR;
}
static GstH264ParserResult
gst_h264_parser_parse_sei_message (GstH264NalParser * nalparser,
NalReader * nr, GstH264SEIMessage * sei)
@ -1125,6 +1183,10 @@ gst_h264_parser_parse_sei_message (GstH264NalParser * nalparser,
res = gst_h264_parser_parse_stereo_video_info (nalparser,
&sei->payload.stereo_video_info, nr);
break;
case GST_H264_SEI_FRAME_PACKING:
res = gst_h264_parser_parse_frame_packing (nalparser,
&sei->payload.frame_packing, nr, payload_size);
break;
default:
/* Just consume payloadSize bytes, which does not account for
emulation prevention bytes */

49
gst-libs/gst/codecparsers/gsth264parser.h
View file

@ -170,6 +170,30 @@ typedef enum
GST_H264_PARSER_NO_NAL_END
} GstH264ParserResult;
/**
* GstH264FramePackingType:
* @GST_H264_FRAME_PACKING_NONE: A complete 2D frame without any frame packing
* @GST_H264_FRAME_PACKING_CHECKERBOARD_INTERLEAVING: Checkerboard
* based interleaving
* @GST_H264_FRAME_PACKING_COLUMN_INTERLEAVING: Column based interleaving
* @GST_H264_FRAME_PACKING_ROW_INTERLEAVING: Row based interleaving
* @GST_H264_FRAME_PACKING_SIDE_BY_SIDE: Side-by-side packing
* @GST_H264_FRMAE_PACKING_TOP_BOTTOM: Top-Bottom packing
* @GST_H264_FRAME_PACKING_TEMPORAL_INTERLEAVING: Temporal interleaving
*
* Frame packing arrangement types.
*/
typedef enum
{
GST_H264_FRAME_PACKING_NONE = 6,
GST_H264_FRAME_PACKING_CHECKERBOARD_INTERLEAVING = 0,
GST_H264_FRAME_PACKING_COLUMN_INTERLEAVING = 1,
GST_H264_FRAME_PACKING_ROW_INTERLEAVING = 2,
GST_H264_FRAME_PACKING_SIDE_BY_SIDE = 3,
GST_H264_FRMAE_PACKING_TOP_BOTTOM = 4,
GST_H264_FRAME_PACKING_TEMPORAL_INTERLEAVING = 5
} GstH264FramePackingType;
/**
* GstH264SEIPayloadType:
* @GST_H264_SEI_BUF_PERIOD: Buffering Period SEI Message
@ -184,7 +208,8 @@ typedef enum
GST_H264_SEI_BUF_PERIOD = 0,
GST_H264_SEI_PIC_TIMING = 1,
GST_H264_SEI_RECOVERY_POINT = 6,
GST_H264_SEI_STEREO_VIDEO_INFO = 21
GST_H264_SEI_STEREO_VIDEO_INFO = 21,
GST_H264_SEI_FRAME_PACKING = 45
/* and more... */
} GstH264SEIPayloadType;
@ -263,6 +288,7 @@ typedef struct _GstH264PicTiming GstH264PicTiming;
typedef struct _GstH264BufferingPeriod GstH264BufferingPeriod;
typedef struct _GstH264RecoveryPoint GstH264RecoveryPoint;
typedef struct _GstH264StereoVideoInfo GstH264StereoVideoInfo;
typedef struct _GstH264FramePacking GstH264FramePacking;
typedef struct _GstH264SEIMessage GstH264SEIMessage;
/**
@ -844,6 +870,26 @@ struct _GstH264ClockTimestamp
guint32 time_offset;
};
struct _GstH264FramePacking
{
guint32 frame_packing_id;
guint8 frame_packing_cancel_flag;
guint8 frame_packing_type; /* GstH264FramePackingType */
guint8 quincunx_sampling_flag;
guint8 content_interpretation_type;
guint8 spatial_flipping_flag;
guint8 frame0_flipped_flag;
guint8 field_views_flag;
guint8 current_frame_is_frame0_flag;
guint8 frame0_self_contained_flag;
guint8 frame1_self_contained_flag;
guint8 frame0_grid_position_x;
guint8 frame0_grid_position_y;
guint8 frame1_grid_position_x;
guint8 frame1_grid_position_y;
guint16 frame_packing_repetition_period;
};
struct _GstH264StereoVideoInfo
{
guint8 field_views_flag;
@ -897,6 +943,7 @@ struct _GstH264SEIMessage
GstH264PicTiming pic_timing;
GstH264RecoveryPoint recovery_point;
GstH264StereoVideoInfo stereo_video_info;
GstH264FramePacking frame_packing;
/* ... could implement more */
} payload;
};

4
gst/videoparsers/gsth264parse.c
View file

@ -534,6 +534,10 @@ gst_h264_parse_process_sei (GstH264Parse * h264parse, GstH264NalUnit * nalu)
case GST_H264_SEI_STEREO_VIDEO_INFO:
GST_LOG_OBJECT (h264parse, "stereo video information message");
break;
case GST_H264_SEI_FRAME_PACKING:
GST_LOG_OBJECT (h264parse, "frame packing arrangement message: type %d",
sei.payload.frame_packing.frame_packing_type);
break;
}
}
g_array_free (messages, TRUE);