gstreamer/gst/mpegstream/gstmpegparse.h
Jan Schmidt 3ef22c4774 ext/mpeg2dec/gstmpeg2dec.c: Don't send things to NULL PAD_PEERs
Original commit message from CVS:
* ext/mpeg2dec/gstmpeg2dec.c:
Don't send things to NULL PAD_PEERs

* gst/deinterlace/gstdeinterlace.c: (gst_deinterlace_chain):
Copy-on-write the incoming buffer.

* gst/mpegstream/gstdvddemux.h:
* gst/mpegstream/gstmpegclock.h:
* gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_parse_syshead),
(normal_seek), (gst_mpeg_demux_handle_src_event):
* gst/mpegstream/gstmpegdemux.h:
* gst/mpegstream/gstmpegpacketize.h:
* gst/mpegstream/gstmpegparse.c:
(gst_mpeg_parse_update_streaminfo), (gst_mpeg_parse_reset),
(gst_mpeg_parse_handle_discont), (gst_mpeg_parse_parse_packhead),
(gst_mpeg_parse_loop), (gst_mpeg_parse_get_rate),
(gst_mpeg_parse_convert_src), (gst_mpeg_parse_handle_src_query),
(gst_mpeg_parse_handle_src_event), (gst_mpeg_parse_change_state):
* gst/mpegstream/gstmpegparse.h:
* gst/mpegstream/gstrfc2250enc.h:
Various changes to the way time is computed that make seeking and
total time estimation much better here.
Use G_BEGIN/END_DECLS instead of __cplusplus

* gst/videocrop/gstvideocrop.c: (gst_video_crop_chain):
Use gst_buffer_stamp instead of only copying the TIMESTAMP
2005-02-01 16:40:10 +00:00

138 lines
4.9 KiB
C

/* 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 __MPEG_PARSE_H__
#define __MPEG_PARSE_H__
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
#include "gstmpegpacketize.h"
G_BEGIN_DECLS
#define GST_TYPE_MPEG_PARSE \
(gst_mpeg_parse_get_type())
#define GST_MPEG_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG_PARSE,GstMPEGParse))
#define GST_MPEG_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG_PARSE,GstMPEGParseClass))
#define GST_IS_MPEG_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG_PARSE))
#define GST_IS_MPEG_PARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG_PARSE))
#define GST_MPEG_PARSE_IS_MPEG2(parse) (GST_MPEG_PACKETIZE_IS_MPEG2 (GST_MPEG_PARSE (parse)->packetize))
#define CLOCK_BASE 9LL
#define CLOCK_FREQ CLOCK_BASE * 10000
#define MPEGTIME_TO_GSTTIME(time) (((time) * (GST_MSECOND/10)) / CLOCK_BASE)
#define GSTTIME_TO_MPEGTIME(time) (((time) * CLOCK_BASE) / (GST_MSECOND/10))
typedef struct _GstMPEGParse GstMPEGParse;
typedef struct _GstMPEGParseClass GstMPEGParseClass;
struct _GstMPEGParse
{
GstElement element;
GstPad *sinkpad, *srcpad;
GstMPEGPacketize *packetize;
/*
* Keep track of total rate using SCR
* and use hysteresis.
*/
guint64 first_scr; /* Earliest SCR value for reference */
guint64 first_scr_pos; /* Byte position of reference SCR */
guint64 last_scr; /* Latest SCR value for reference */
guint64 last_scr_pos; /* Byte position of reference SCR */
guint64 scr_rate; /* Remember the last rate for hysteresis */
/*
* Compute a rolling average for SCR interpolation (for MPEG1)
*/
guint64 avg_bitrate_time; /* Time total for local average bitrate */
guint64 avg_bitrate_bytes; /* bytes total for local average bitrate */
/* pack header values */
guint32 mux_rate; /* mux rate in bytes/sec derived from Pack
* header */
guint64 current_scr; /* Current SCR from the stream. */
guint64 next_scr; /* Expected next SCR. */
guint64 bytes_since_scr; /* Bytes since current_scr */
gboolean do_adjust; /* If false, send discont events on SCR
* jumps
*/
gboolean use_adjust; /* Collect SCR jumps into 'adjust' in
* order to adjust timestamps to smooth
* discontinuities. */
gint64 adjust; /* Current timestamp adjust value. */
gboolean discont_pending;
gboolean scr_pending;
gint max_discont;
GstClock *clock;
gboolean sync;
GstClockID id;
GstIndex *index;
gint index_id;
};
struct _GstMPEGParseClass
{
GstElementClass parent_class;
/* process packet types */
gboolean (*parse_packhead) (GstMPEGParse * parse, GstBuffer * buffer);
gboolean (*parse_syshead) (GstMPEGParse * parse, GstBuffer * buffer);
gboolean (*parse_packet) (GstMPEGParse * parse, GstBuffer * buffer);
gboolean (*parse_pes) (GstMPEGParse * parse, GstBuffer * buffer);
/* process events */
void (*handle_discont) (GstMPEGParse * parse, GstEvent * event);
/* optional method to send out the data */
void (*send_data) (GstMPEGParse * parse, GstData * data, GstClockTime time);
void (*send_discont) (GstMPEGParse * parse, GstClockTime time);
};
GType gst_mpeg_parse_get_type (void);
gboolean gst_mpeg_parse_plugin_init (GstPlugin * plugin);
const GstFormat *gst_mpeg_parse_get_src_formats (GstPad * pad);
gboolean gst_mpeg_parse_convert_src (GstPad * pad, GstFormat src_format,
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
const GstEventMask *gst_mpeg_parse_get_src_event_masks (GstPad * pad);
gboolean gst_mpeg_parse_handle_src_event (GstPad * pad, GstEvent * event);
const GstQueryType *gst_mpeg_parse_get_src_query_types (GstPad * pad);
gboolean gst_mpeg_parse_handle_src_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value);
G_END_DECLS
#endif /* __MPEG_PARSE_H__ */