gstreamer/gst/mpegstream/gstmpegpacketize.h

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __MPEGPACKETIZE_H__
#define __MPEGPACKETIZE_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define PICTURE_START_CODE 0x00
#define SLICE_MIN_START_CODE 0x01
#define SLICE_MAX_START_CODE 0xaf
#define USER_START_CODE 0xb2
#define SEQUENCE_START_CODE 0xb3
#define SEQUENCE_ERROR_START_CODE 0xb4
#define EXT_START_CODE 0xb5
#define SEQUENCE_END_START_CODE 0xb7
#define GOP_START_CODE 0xb8
#define ISO11172_END_START_CODE 0xb9
#define PACK_START_CODE 0xba
#define SYS_HEADER_START_CODE 0xbb
typedef struct _GstMPEGPacketize GstMPEGPacketize;
#define GST_MPEG_PACKETIZE_ID(pack) ((pack)->id)
#define GST_MPEG_PACKETIZE_IS_MPEG2(pack) ((pack)->MPEG2)
typedef enum {
GST_MPEG_PACKETIZE_SYSTEM,
GST_MPEG_PACKETIZE_VIDEO,
} GstMPEGPacketizeType;
struct _GstMPEGPacketize {
/* current parse state */
guchar id;
GstPad *srcpad;
GstMPEGPacketizeType type;
guint8 *cache; /* cache for incoming data */
guint cache_size; /* allocated size of the cache */
guint cache_head; /* position of the beginning of the data */
guint cache_tail; /* position of the end of the data in the cache */
guint64 cache_byte_pos; /* byte position of the cache in the MPEG stream */
gboolean MPEG2;
gboolean resync;
};
GstMPEGPacketize* gst_mpeg_packetize_new (GstPad *pad, GstMPEGPacketizeType type);
void gst_mpeg_packetize_destroy (GstMPEGPacketize *packetize);
guint64 gst_mpeg_packetize_tell (GstMPEGPacketize *packetize);
gboolean gst_mpeg_packetize_put (GstMPEGPacketize *packetize, GstBuffer * buf);
GstFlowReturn gst_mpeg_packetize_read (GstMPEGPacketize *packetize, GstBuffer ** outbuf);
G_END_DECLS
#endif /* __MPEGPACKETIZE_H__ */