gstmpegvideometa

gstmpegvideometa

Functions

Types and Values

Object Hierarchy


Includes

#include <gst/codecparsers/gstmpegvideometa.h>

Description

Functions

GST_MPEG_VIDEO_META_API_TYPE

#define GST_MPEG_VIDEO_META_API_TYPE  (gst_mpeg_video_meta_api_get_type())

GST_MPEG_VIDEO_META_INFO

#define GST_MPEG_VIDEO_META_INFO  (gst_mpeg_video_meta_get_info())

gst_buffer_add_mpeg_video_meta ()

GstMpegVideoMeta *
gst_buffer_add_mpeg_video_meta (GstBuffer *buffer,
                                const GstMpegVideoSequenceHdr *seq_hdr,
                                const GstMpegVideoSequenceExt *seq_ext,
                                const GstMpegVideoSequenceDisplayExt *disp_ext,
                                const GstMpegVideoPictureHdr *pic_hdr,
                                const GstMpegVideoPictureExt *pic_ext,
                                const GstMpegVideoQuantMatrixExt *quant_ext);

Creates and adds a GstMpegVideoMeta to a buffer .

Provided structures must either be NULL or GSlice-allocated.

Parameters

buffer

a GstBuffer

 

Returns

a newly created GstMpegVideoMeta.

[transfer full]

Since 1.2


gst_buffer_get_mpeg_video_meta()

#define gst_buffer_get_mpeg_video_meta(b) ((GstMpegVideoMeta*)gst_buffer_get_meta((b),GST_MPEG_VIDEO_META_API_TYPE))

gst_mpeg_video_meta_get_info ()

const GstMetaInfo *
gst_mpeg_video_meta_get_info (void);

Types and Values

struct GstMpegVideoMeta

struct GstMpegVideoMeta {
  GstMeta            meta;

  GstMpegVideoSequenceHdr        *sequencehdr;
  GstMpegVideoSequenceExt        *sequenceext;
  GstMpegVideoSequenceDisplayExt *sequencedispext;
  GstMpegVideoPictureHdr         *pichdr;
  GstMpegVideoPictureExt         *picext;
  GstMpegVideoQuantMatrixExt     *quantext;

  guint num_slices;
  gsize slice_offset;
};

Extra buffer metadata describing the contents of a MPEG1/2 Video frame

Can be used by elements (mainly decoders) to avoid having to parse Mpeg video 1/2 packets if it can be done upstream.

The various fields are only valid during the lifetime of the GstMpegVideoMeta. If elements wish to use those for longer, they are required to make a copy.

Members

GstMeta meta;

parent GstMeta

 

GstMpegVideoSequenceHdr *sequencehdr;

the GstMpegVideoSequenceHdr if present in the buffer

 

GstMpegVideoSequenceExt *sequenceext;

the GstMpegVideoSequenceExt if present in the buffer

 

GstMpegVideoSequenceDisplayExt *sequencedispext;

the GstMpegVideoSequenceDisplayExt if present in the buffer.

 

GstMpegVideoPictureHdr *pichdr;

the GstMpegVideoPictureHdr if present in the buffer.

 

GstMpegVideoPictureExt *picext;

the GstMpegVideoPictureExt if present in the buffer.

 

GstMpegVideoQuantMatrixExt *quantext;

the GstMpegVideoQuantMatrixExt if present in the buffer

 

guint num_slices;

   

gsize slice_offset;

   

Since 1.2