gstreamer/gst/mpegtsdemux/mpegtsparse.h
Jan Schmidt a49ce685d1 tsparse: Implement timestamp/retimestamping of output buffers
When the set-timestamps property is set, use PCRs on the provided
(or autodetected) pcr-pid to apply (or replace) timestamps on the
output buffers, using piece-wise linear interpolation.

This allows tsparse to be used to stream an arbitrary mpeg-ts file,
or to smooth jittery reception timestamps from a network stream.

The reported latency is increased to match the smoothing latency if
necessary.
2014-10-29 23:02:50 +11:00

84 lines
2.3 KiB
C

/*
* mpegts_parse.h - GStreamer MPEG transport stream parser
* Copyright (C) 2007 Alessandro Decina
*
* Authors:
* Alessandro Decina <alessandro@nnva.org>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef GST_MPEG_TS_PARSE_H
#define GST_MPEG_TS_PARSE_H
#include <gst/gst.h>
#include "mpegtsbase.h"
#include "mpegtspacketizer.h"
G_BEGIN_DECLS
#define GST_TYPE_MPEGTS_PARSE \
(mpegts_parse_get_type())
#define GST_MPEGTS_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEGTS_PARSE,MpegTSParse2))
#define GST_MPEGTS_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEGTS_PARSE,MpegTSParse2Class))
#define GST_IS_MPEGTS_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEGTS_PARSE))
#define GST_IS_MPEGTS_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEGTS_PARSE))
typedef struct _MpegTSParse2 MpegTSParse2;
typedef struct _MpegTSParse2Class MpegTSParse2Class;
struct _MpegTSParse2 {
MpegTSBase parent;
gboolean have_group_id;
guint group_id;
GstClockTime smoothing_latency;
GstClockTime current_pcr;
gint user_pcr_pid;
gint pcr_pid;
/* Always present source pad */
GstPad *srcpad;
GList *srcpads;
/* state */
gboolean first;
gboolean set_timestamps;
/* Pending buffer state */
GList *pending_buffers;
GstClockTime previous_pcr;
guint bytes_since_pcr;
};
struct _MpegTSParse2Class {
MpegTSBaseClass parent_class;
};
G_GNUC_INTERNAL GType mpegts_parse_get_type(void);
G_GNUC_INTERNAL gboolean gst_mpegtsparse_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif /* GST_MPEG_TS_PARSE_H */