mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 02:30:35 +00:00
244 lines
7.6 KiB
C
244 lines
7.6 KiB
C
/*
|
|
* This library is licensed under 2 different licenses and you
|
|
* can choose to use it under the terms of either one of them. The
|
|
* two licenses are the MPL 1.1 and the LGPL.
|
|
*
|
|
* MPL:
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License
|
|
* Version 1.1 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/.
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* LGPL:
|
|
*
|
|
* 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.
|
|
*
|
|
* The Original Code is Fluendo MPEG Demuxer plugin.
|
|
*
|
|
* The Initial Developer of the Original Code is Fluendo, S.A.
|
|
* Portions created by Fluendo, S.A. are Copyright (C) 2005,2006,2007,2008,2009
|
|
* Fluendo, S.A. All Rights Reserved.
|
|
*
|
|
* Contributor(s): Wim Taymans <wim@fluendo.com>
|
|
*/
|
|
|
|
#ifndef __GST_MPEGTS_DEMUX_H__
|
|
#define __GST_MPEGTS_DEMUX_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstadapter.h>
|
|
|
|
#include "gstmpegdesc.h"
|
|
#include "gstpesfilter.h"
|
|
#include "gstsectionfilter.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define MPEGTS_MIN_PES_BUFFER_SIZE 4 * 1024
|
|
#define MPEGTS_MAX_PES_BUFFER_SIZE 256 * 1024
|
|
|
|
#define MPEGTS_MAX_PID 0x1fff
|
|
#define MPEGTS_NORMAL_TS_PACKETSIZE 188
|
|
#define MPEGTS_M2TS_TS_PACKETSIZE 192
|
|
#define MPEGTS_DVB_ASI_TS_PACKETSIZE 204
|
|
#define MPEGTS_ATSC_TS_PACKETSIZE 208
|
|
|
|
#define IS_MPEGTS_SYNC(data) (((data)[0] == 0x47) && \
|
|
(((data)[1] & 0x80) == 0x00) && \
|
|
(((data)[3] & 0x10) == 0x10))
|
|
|
|
#define GST_TYPE_MPEGTS_DEMUX (gst_mpegts_demux_get_type())
|
|
#define GST_MPEGTS_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
|
|
GST_TYPE_MPEGTS_DEMUX,GstMpegTSDemux))
|
|
#define GST_MPEGTS_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\
|
|
GST_TYPE_MPEGTS_DEMUX,GstMpegTSDemuxClass))
|
|
#define GST_MPEGTS_DEMUX_GET_CLASS(klass) (G_TYPE_INSTANCE_GET_CLASS((klass),\
|
|
GST_TYPE_MPEGTS_DEMUX,GstMpegTSDemuxClass))
|
|
#define GST_IS_MPEGTS_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
|
|
GST_TYPE_MPEGTS_DEMUX))
|
|
#define GST_IS_MPEGTS_DEMUX_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),\
|
|
GST_TYPE_MPEGTS_DEMUX))
|
|
|
|
typedef struct _GstMpegTSStream GstMpegTSStream;
|
|
typedef struct _GstMpegTSPMTEntry GstMpegTSPMTEntry;
|
|
typedef struct _GstMpegTSPMT GstMpegTSPMT;
|
|
typedef struct _GstMpegTSPATEntry GstMpegTSPATEntry;
|
|
typedef struct _GstMpegTSPAT GstMpegTSPAT;
|
|
typedef struct _GstMpegTSDemux GstMpegTSDemux;
|
|
typedef struct _GstMpegTSDemuxClass GstMpegTSDemuxClass;
|
|
|
|
struct _GstMpegTSPMTEntry {
|
|
guint16 PID;
|
|
};
|
|
|
|
struct _GstMpegTSPMT {
|
|
guint16 program_number;
|
|
guint8 version_number;
|
|
gboolean current_next_indicator;
|
|
guint8 section_number;
|
|
guint8 last_section_number;
|
|
guint16 PCR_PID;
|
|
guint16 program_info_length;
|
|
GstMPEGDescriptor * program_info;
|
|
|
|
GArray * entries;
|
|
};
|
|
|
|
struct _GstMpegTSPATEntry {
|
|
guint16 program_number;
|
|
guint16 PID;
|
|
};
|
|
|
|
struct _GstMpegTSPAT {
|
|
guint16 transport_stream_id;
|
|
guint8 version_number;
|
|
gboolean current_next_indicator;
|
|
guint8 section_number;
|
|
guint8 last_section_number;
|
|
|
|
GArray * entries;
|
|
};
|
|
|
|
typedef enum _MpegTsStreamFlags {
|
|
MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN = 0x01,
|
|
MPEGTS_STREAM_FLAG_PMT_VALID = 0x02,
|
|
MPEGTS_STREAM_FLAG_IS_VIDEO = 0x04
|
|
} MpegTsStreamFlags;
|
|
|
|
/* Information associated to a single MPEG stream. */
|
|
struct _GstMpegTSStream {
|
|
GstMpegTSDemux * demux;
|
|
|
|
MpegTsStreamFlags flags;
|
|
|
|
/* PID and type */
|
|
guint16 PID;
|
|
guint8 PID_type;
|
|
|
|
/* adaptation_field data */
|
|
guint64 last_PCR;
|
|
guint64 base_PCR;
|
|
guint64 last_OPCR;
|
|
guint64 last_PCR_difference;
|
|
gboolean discont_PCR;
|
|
GstClockTimeDiff discont_difference;
|
|
|
|
/* for PAT streams */
|
|
GstMpegTSPAT PAT;
|
|
|
|
/* for PMT streams */
|
|
GstMpegTSPMT PMT;
|
|
|
|
/* for CA streams */
|
|
|
|
/* for PAT, PMT, CA and private streams */
|
|
GstSectionFilter section_filter;
|
|
|
|
/* for PES streams */
|
|
guint8 id;
|
|
guint8 stream_type;
|
|
GstBuffer * pes_buffer;
|
|
guint32 pes_buffer_size;
|
|
guint32 pes_buffer_used;
|
|
gboolean pes_buffer_overflow;
|
|
gboolean pes_buffer_in_sync;
|
|
GstPESFilter filter;
|
|
GstPad * pad;
|
|
GstFlowReturn last_ret;
|
|
GstMPEGDescriptor *ES_info;
|
|
/* needed because 33bit mpeg timestamps wrap around every (approx) 26.5 hrs */
|
|
GstClockTimeDiff base_time;
|
|
GstClockTime last_time;
|
|
/* pid of PMT that this stream belongs to */
|
|
guint16 PMT_pid;
|
|
gboolean discont;
|
|
};
|
|
|
|
struct _GstMpegTSDemux {
|
|
GstElement parent;
|
|
|
|
/* properties */
|
|
gboolean check_crc;
|
|
|
|
/* sink pad and adapter */
|
|
GstPad * sinkpad;
|
|
GstAdapter * adapter;
|
|
guint8 ** sync_lut;
|
|
guint sync_lut_len;
|
|
|
|
/* current PMT PID */
|
|
guint16 current_PMT;
|
|
|
|
/* Array of MPEGTS_MAX_PID + 1 stream entries */
|
|
GstMpegTSStream ** streams;
|
|
/* Array to perform pmts checks at gst_mpegts_demux_parse_adaptation_field */
|
|
gboolean pmts_checked[MPEGTS_MAX_PID + 1];
|
|
|
|
/* Array of Elementary Stream pids for ts with PMT */
|
|
guint16 * elementary_pids;
|
|
guint nb_elementary_pids;
|
|
|
|
/* Program number to use */
|
|
gint program_number;
|
|
|
|
/* indicates that we need to close our pad group, because we've added
|
|
* at least one pad */
|
|
gboolean need_no_more_pads;
|
|
gint packetsize;
|
|
gboolean m2ts_mode;
|
|
/* clocking */
|
|
GstClock * clock;
|
|
GstClockTime clock_base;
|
|
|
|
/* Additional information required for seeking.
|
|
* num_packets: Number of packets outputted
|
|
* bitrate: estimated bitrate (based on pcr and num_packets */
|
|
guint64 num_packets;
|
|
gint64 bitrate;
|
|
|
|
/* Two PCRs observations to calculate bitrate */
|
|
guint64 pcr[2];
|
|
|
|
/* Cached duration estimation */
|
|
GstClockTime cache_duration;
|
|
|
|
/* Cached base_PCR in GStreamer time. */
|
|
GstClockTime base_pts;
|
|
};
|
|
|
|
struct _GstMpegTSDemuxClass {
|
|
GstElementClass parent_class;
|
|
|
|
GstPadTemplate * sink_template;
|
|
GstPadTemplate * video_template;
|
|
GstPadTemplate * audio_template;
|
|
GstPadTemplate * subpicture_template;
|
|
GstPadTemplate * private_template;
|
|
};
|
|
|
|
GType gst_mpegts_demux_get_type (void);
|
|
|
|
gboolean gst_mpegts_demux_plugin_init (GstPlugin *plugin);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_MPEGTS_DEMUX_H__ */
|