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67ac84c7b5
This can be used by parsers to provide pre-parsed information to downstream elements that would require it (so they can avoid having to parse the bitstream again).
87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/* Gstreamer
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* Copyright (C) <2012> Edward Hervey <edward@collabora.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_MPEG_VIDEO_META_H__
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#define __GST_MPEG_VIDEO_META_H__
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#ifndef GST_USE_UNSTABLE_API
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#warning "The Mpeg video parsing library is unstable API and may change in future."
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#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
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#endif
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#include <gst/gst.h>
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#include <gst/codecparsers/gstmpegvideoparser.h>
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G_BEGIN_DECLS
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typedef struct _GstMpegVideoMeta GstMpegVideoMeta;
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GType gst_mpeg_video_meta_api_get_type (void);
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#define GST_MPEG_VIDEO_META_API_TYPE (gst_mpeg_video_meta_api_get_type())
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#define GST_MPEG_VIDEO_META_INFO (gst_mpeg_video_meta_get_info())
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const GstMetaInfo * gst_mpeg_video_meta_get_info (void);
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/**
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* GstMpegVideoMeta:
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* @meta: parent #GstMeta
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* @sequencehdr: the #GstMpegVideoSequenceHdr if present in the buffer
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* @sequenceext: the #GstMpegVideoSequenceExt if present in the buffer
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* @sequencedispext: the #GstMpegVideoSequenceDisplayExt if present in the
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* buffer.
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* @pichdr: the #GstMpegVideoPictureHdr if present in the buffer.
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* @picext: the #GstMpegVideoPictureExt if present in the buffer.
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* @quantext: the #GstMpegVideoQuantMatrixExt if present in the buffer
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*
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* Extra buffer metadata describing the contents of a MPEG1/2 Video frame
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*
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* Can be used by elements (mainly decoders) to avoid having to parse
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* Mpeg video 1/2 packets if it can be done upstream.
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*
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* The various fields are only valid during the lifetime of the #GstH264Meta.
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* If elements wish to use those for longer, they are required to make a copy.
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*/
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struct _GstMpegVideoMeta {
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GstMeta meta;
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GstMpegVideoSequenceHdr *sequencehdr;
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GstMpegVideoSequenceExt *sequenceext;
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GstMpegVideoSequenceDisplayExt *sequencedispext;
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GstMpegVideoPictureHdr *pichdr;
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GstMpegVideoPictureExt *picext;
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GstMpegVideoQuantMatrixExt *quantext;
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guint num_slices;
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gsize slice_offset;
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};
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#define gst_buffer_get_mpeg_video_meta(b) ((GstMpegVideoMeta*)gst_buffer_get_meta((b),GST_MPEG_VIDEO_META_API_TYPE))
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GstMpegVideoMeta *
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gst_buffer_add_mpeg_video_meta (GstBuffer * buffer,
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const GstMpegVideoSequenceHdr *seq_hdr,
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const GstMpegVideoSequenceExt *seq_ext,
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const GstMpegVideoSequenceDisplayExt *disp_ext,
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const GstMpegVideoPictureHdr *pic_hdr,
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const GstMpegVideoPictureExt *pic_ext,
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const GstMpegVideoQuantMatrixExt *quant_ext);
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G_END_DECLS
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#endif
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