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/*
* 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,
MPEGTS_STREAM_FLAG_IS_AUDIO = 0x08
} 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__ */
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