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codecparsers: h264: add support for Stereo Video Information SEI message.
Add the necessary payload parsing support for stereo_video_info. https://bugzilla.gnome.org/show_bug.cgi?id=685215 Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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3 changed files with 47 additions and 0 deletions
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@ -1052,6 +1052,30 @@ error:
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return GST_H264_PARSER_ERROR;
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}
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/* Parse SEI stereo_video_info() message */
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static GstH264ParserResult
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gst_h264_parser_parse_stereo_video_info (GstH264NalParser * nalparser,
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GstH264StereoVideoInfo * info, NalReader * nr)
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{
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GST_DEBUG ("parsing \"Stereo Video info\"");
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READ_UINT8 (nr, info->field_views_flag, 1);
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if (info->field_views_flag) {
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READ_UINT8 (nr, info->top_field_is_left_view_flag, 1);
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} else {
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READ_UINT8 (nr, info->current_frame_is_left_view_flag, 1);
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READ_UINT8 (nr, info->next_frame_is_second_view_flag, 1);
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}
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READ_UINT8 (nr, info->left_view_self_contained_flag, 1);
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READ_UINT8 (nr, info->right_view_self_contained_flag, 1);
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return GST_H264_PARSER_OK;
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error:
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GST_WARNING ("error parsing \"Stereo Video info\"");
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return GST_H264_PARSER_ERROR;
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}
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static GstH264ParserResult
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gst_h264_parser_parse_sei_message (GstH264NalParser * nalparser,
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NalReader * nr, GstH264SEIMessage * sei)
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@ -1097,6 +1121,10 @@ gst_h264_parser_parse_sei_message (GstH264NalParser * nalparser,
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res = gst_h264_parser_parse_recovery_point (nalparser,
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&sei->payload.recovery_point, nr);
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break;
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case GST_H264_SEI_STEREO_VIDEO_INFO:
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res = gst_h264_parser_parse_stereo_video_info (nalparser,
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&sei->payload.stereo_video_info, nr);
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break;
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default:
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/* Just consume payloadSize bytes, which does not account for
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emulation prevention bytes */
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@ -184,6 +184,7 @@ typedef enum
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GST_H264_SEI_BUF_PERIOD = 0,
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GST_H264_SEI_PIC_TIMING = 1,
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GST_H264_SEI_RECOVERY_POINT = 6,
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GST_H264_SEI_STEREO_VIDEO_INFO = 21
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/* and more... */
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} GstH264SEIPayloadType;
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@ -261,6 +262,7 @@ typedef struct _GstH264ClockTimestamp GstH264ClockTimestamp;
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typedef struct _GstH264PicTiming GstH264PicTiming;
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typedef struct _GstH264BufferingPeriod GstH264BufferingPeriod;
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typedef struct _GstH264RecoveryPoint GstH264RecoveryPoint;
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typedef struct _GstH264StereoVideoInfo GstH264StereoVideoInfo;
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typedef struct _GstH264SEIMessage GstH264SEIMessage;
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/**
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@ -842,6 +844,16 @@ struct _GstH264ClockTimestamp
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guint32 time_offset;
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};
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struct _GstH264StereoVideoInfo
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{
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guint8 field_views_flag;
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guint8 top_field_is_left_view_flag;
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guint8 current_frame_is_left_view_flag;
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guint8 next_frame_is_second_view_flag;
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guint8 left_view_self_contained_flag;
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guint8 right_view_self_contained_flag;
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};
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struct _GstH264PicTiming
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{
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guint32 cpb_removal_delay;
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@ -884,6 +896,7 @@ struct _GstH264SEIMessage
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GstH264BufferingPeriod buffering_period;
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GstH264PicTiming pic_timing;
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GstH264RecoveryPoint recovery_point;
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GstH264StereoVideoInfo stereo_video_info;
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/* ... could implement more */
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} payload;
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};
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@ -528,6 +528,12 @@ gst_h264_parse_process_sei (GstH264Parse * h264parse, GstH264NalUnit * nalu)
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sei.payload.recovery_point.broken_link_flag,
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sei.payload.recovery_point.changing_slice_group_idc);
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break;
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/* Additional messages that are not innerly useful to the
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* element but for debugging purposes */
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case GST_H264_SEI_STEREO_VIDEO_INFO:
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GST_LOG_OBJECT (h264parse, "stereo video information message");
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break;
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}
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}
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g_array_free (messages, TRUE);
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