2002-05-20 16:27:23 +00:00
|
|
|
/*
|
2006-10-23 08:57:54 +00:00
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|
|
* MPEG2 transport stream (aka DVB) demuxer
|
2009-01-19 15:46:40 +00:00
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|
|
* Copyright (c) 2002-2003 Fabrice Bellard
|
2002-05-20 16:27:23 +00:00
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*
|
2011-03-18 17:35:10 +00:00
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|
* This file is part of Libav.
|
2006-10-07 15:30:46 +00:00
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|
*
|
2011-03-18 17:35:10 +00:00
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|
|
* Libav is free software; you can redistribute it and/or
|
2002-05-25 22:34:32 +00:00
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|
* modify it under the terms of the GNU Lesser General Public
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|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
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|
|
* version 2.1 of the License, or (at your option) any later version.
|
2002-05-20 16:27:23 +00:00
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|
|
*
|
2011-03-18 17:35:10 +00:00
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|
|
* Libav is distributed in the hope that it will be useful,
|
2002-05-20 16:27:23 +00:00
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|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-25 22:34:32 +00:00
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|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
|
|
* Lesser General Public License for more details.
|
2002-05-20 16:27:23 +00:00
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|
|
*
|
2002-05-25 22:34:32 +00:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 17:35:10 +00:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
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|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2002-05-20 16:27:23 +00:00
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|
*/
|
2008-05-09 11:56:36 +00:00
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|
2009-09-06 15:59:32 +00:00
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|
//#define USE_SYNCPOINT_SEARCH
|
2009-05-26 20:13:03 +00:00
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|
|
2008-05-09 11:56:36 +00:00
|
|
|
#include "libavutil/crc.h"
|
2009-01-11 22:19:48 +00:00
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|
|
#include "libavutil/intreadwrite.h"
|
2011-04-30 11:42:55 +00:00
|
|
|
#include "libavutil/log.h"
|
2011-05-22 10:46:29 +00:00
|
|
|
#include "libavutil/dict.h"
|
2011-07-04 22:42:31 +00:00
|
|
|
#include "libavutil/mathematics.h"
|
2011-04-30 11:42:55 +00:00
|
|
|
#include "libavutil/opt.h"
|
2009-04-12 02:32:02 +00:00
|
|
|
#include "libavcodec/bytestream.h"
|
2011-10-11 21:49:59 +00:00
|
|
|
#include "libavcodec/get_bits.h"
|
2002-05-20 16:27:23 +00:00
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|
|
#include "avformat.h"
|
2003-06-13 14:28:45 +00:00
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|
|
#include "mpegts.h"
|
2008-12-03 23:04:30 +00:00
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|
|
#include "internal.h"
|
2011-02-20 10:04:13 +00:00
|
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|
#include "avio_internal.h"
|
2009-08-22 16:07:50 +00:00
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|
|
#include "seek.h"
|
2011-01-30 15:24:00 +00:00
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|
#include "mpeg.h"
|
2010-11-23 00:51:12 +00:00
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|
#include "isom.h"
|
2002-05-20 16:27:23 +00:00
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|
2003-07-15 13:21:39 +00:00
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|
|
/* maximum size in which we look for synchronisation if
|
|
|
|
synchronisation is lost */
|
2009-10-18 20:08:13 +00:00
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|
|
#define MAX_RESYNC_SIZE 65536
|
2003-06-13 14:28:45 +00:00
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|
2009-05-27 00:44:00 +00:00
|
|
|
#define MAX_PES_PAYLOAD 200*1024
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|
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|
2011-10-05 06:43:59 +00:00
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|
|
#define MAX_MP4_DESCR_COUNT 16
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|
2003-06-13 14:28:45 +00:00
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|
|
enum MpegTSFilterType {
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|
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MPEGTS_PES,
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|
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MPEGTS_SECTION,
|
2002-05-20 16:27:23 +00:00
|
|
|
};
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|
2007-07-08 13:42:51 +00:00
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|
typedef struct MpegTSFilter MpegTSFilter;
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|
2009-05-27 00:56:31 +00:00
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|
typedef int PESCallback(MpegTSFilter *f, const uint8_t *buf, int len, int is_start, int64_t pos);
|
2002-05-20 16:27:23 +00:00
|
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|
2003-06-13 14:28:45 +00:00
|
|
|
typedef struct MpegTSPESFilter {
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|
|
PESCallback *pes_cb;
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|
|
void *opaque;
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|
|
} MpegTSPESFilter;
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|
2007-07-08 13:42:51 +00:00
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|
|
typedef void SectionCallback(MpegTSFilter *f, const uint8_t *buf, int len);
|
2003-06-13 14:28:45 +00:00
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|
typedef void SetServiceCallback(void *opaque, int ret);
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|
|
typedef struct MpegTSSectionFilter {
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|
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|
int section_index;
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|
|
int section_h_size;
|
|
|
|
uint8_t *section_buf;
|
2008-07-08 23:20:22 +00:00
|
|
|
unsigned int check_crc:1;
|
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|
|
unsigned int end_of_section_reached:1;
|
2003-06-13 14:28:45 +00:00
|
|
|
SectionCallback *section_cb;
|
|
|
|
void *opaque;
|
|
|
|
} MpegTSSectionFilter;
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|
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|
2007-07-08 13:42:51 +00:00
|
|
|
struct MpegTSFilter {
|
2002-05-20 16:27:23 +00:00
|
|
|
int pid;
|
2011-10-10 19:50:00 +00:00
|
|
|
int es_id;
|
2002-05-20 16:27:23 +00:00
|
|
|
int last_cc; /* last cc code (-1 if first packet) */
|
2003-06-13 14:28:45 +00:00
|
|
|
enum MpegTSFilterType type;
|
|
|
|
union {
|
|
|
|
MpegTSPESFilter pes_filter;
|
|
|
|
MpegTSSectionFilter section_filter;
|
|
|
|
} u;
|
2007-07-08 13:42:51 +00:00
|
|
|
};
|
2003-06-13 14:28:45 +00:00
|
|
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|
2007-09-25 20:58:37 +00:00
|
|
|
#define MAX_PIDS_PER_PROGRAM 64
|
2008-12-13 00:04:34 +00:00
|
|
|
struct Program {
|
2007-09-25 20:58:37 +00:00
|
|
|
unsigned int id; //program id/service id
|
|
|
|
unsigned int nb_pids;
|
|
|
|
unsigned int pids[MAX_PIDS_PER_PROGRAM];
|
2008-12-13 00:04:34 +00:00
|
|
|
};
|
2007-09-25 20:58:37 +00:00
|
|
|
|
2010-02-01 23:30:30 +00:00
|
|
|
struct MpegTSContext {
|
2011-04-30 11:42:55 +00:00
|
|
|
const AVClass *class;
|
2003-06-13 14:28:45 +00:00
|
|
|
/* user data */
|
|
|
|
AVFormatContext *stream;
|
2007-01-23 21:47:32 +00:00
|
|
|
/** raw packet size, including FEC if present */
|
|
|
|
int raw_packet_size;
|
2008-04-23 21:16:25 +00:00
|
|
|
|
|
|
|
int pos47;
|
|
|
|
|
2007-01-23 21:47:32 +00:00
|
|
|
/** if true, all pids are analyzed to find streams */
|
|
|
|
int auto_guess;
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2007-01-23 21:47:32 +00:00
|
|
|
/** compute exact PCR for each transport stream packet */
|
|
|
|
int mpeg2ts_compute_pcr;
|
2003-10-29 14:16:31 +00:00
|
|
|
|
2007-01-23 21:47:32 +00:00
|
|
|
int64_t cur_pcr; /**< used to estimate the exact PCR */
|
|
|
|
int pcr_incr; /**< used to estimate the exact PCR */
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
/* data needed to handle file based ts */
|
2007-01-23 21:47:32 +00:00
|
|
|
/** stop parsing loop */
|
|
|
|
int stop_parse;
|
|
|
|
/** packet containing Audio/Video data */
|
|
|
|
AVPacket *pkt;
|
2009-05-27 00:44:00 +00:00
|
|
|
/** to detect seek */
|
|
|
|
int64_t last_pos;
|
2003-06-13 14:28:45 +00:00
|
|
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|
|
|
|
/******************************************/
|
|
|
|
/* private mpegts data */
|
|
|
|
/* scan context */
|
2007-09-25 20:58:37 +00:00
|
|
|
/** structure to keep track of Program->pids mapping */
|
|
|
|
unsigned int nb_prg;
|
2008-12-13 00:04:34 +00:00
|
|
|
struct Program *prg;
|
2005-12-17 18:14:38 +00:00
|
|
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|
2003-06-13 14:28:45 +00:00
|
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|
2007-01-23 21:47:32 +00:00
|
|
|
/** filters for various streams specified by PMT + for the PAT and PMT */
|
2003-06-13 14:28:45 +00:00
|
|
|
MpegTSFilter *pids[NB_PID_MAX];
|
2010-02-01 23:30:30 +00:00
|
|
|
};
|
2002-05-20 16:27:23 +00:00
|
|
|
|
2011-04-30 11:42:55 +00:00
|
|
|
static const AVOption options[] = {
|
2011-10-04 05:38:01 +00:00
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|
{"compute_pcr", "Compute exact PCR for each transport stream packet.", offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT,
|
2011-04-30 11:42:55 +00:00
|
|
|
{.dbl = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
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|
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|
{ NULL },
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|
|
|
};
|
|
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|
|
static const AVClass mpegtsraw_class = {
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|
|
|
.class_name = "mpegtsraw demuxer",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
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|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
};
|
|
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|
2007-06-04 14:11:54 +00:00
|
|
|
/* TS stream handling */
|
|
|
|
|
|
|
|
enum MpegTSState {
|
|
|
|
MPEGTS_HEADER = 0,
|
2009-06-02 07:53:44 +00:00
|
|
|
MPEGTS_PESHEADER,
|
2007-06-04 14:11:54 +00:00
|
|
|
MPEGTS_PESHEADER_FILL,
|
|
|
|
MPEGTS_PAYLOAD,
|
|
|
|
MPEGTS_SKIP,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* enough for PES header + length */
|
2009-06-02 07:53:44 +00:00
|
|
|
#define PES_START_SIZE 6
|
|
|
|
#define PES_HEADER_SIZE 9
|
2007-06-04 14:11:54 +00:00
|
|
|
#define MAX_PES_HEADER_SIZE (9 + 255)
|
|
|
|
|
2010-01-13 22:52:22 +00:00
|
|
|
typedef struct PESContext {
|
2007-06-04 14:11:54 +00:00
|
|
|
int pid;
|
2007-06-08 17:21:29 +00:00
|
|
|
int pcr_pid; /**< if -1 then all packets containing PCR are considered */
|
2007-06-04 14:11:54 +00:00
|
|
|
int stream_type;
|
|
|
|
MpegTSContext *ts;
|
|
|
|
AVFormatContext *stream;
|
|
|
|
AVStream *st;
|
2009-10-05 08:38:39 +00:00
|
|
|
AVStream *sub_st; /**< stream for the embedded AC3 stream in HDMV TrueHD */
|
2007-06-04 14:11:54 +00:00
|
|
|
enum MpegTSState state;
|
|
|
|
/* used to get the format */
|
|
|
|
int data_index;
|
2011-07-24 08:13:50 +00:00
|
|
|
int flags; /**< copied to the AVPacket flags */
|
2007-06-04 14:11:54 +00:00
|
|
|
int total_size;
|
|
|
|
int pes_header_size;
|
2009-10-05 08:38:39 +00:00
|
|
|
int extended_stream_id;
|
2007-06-04 14:11:54 +00:00
|
|
|
int64_t pts, dts;
|
2009-02-28 18:35:53 +00:00
|
|
|
int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
|
2007-06-04 14:11:54 +00:00
|
|
|
uint8_t header[MAX_PES_HEADER_SIZE];
|
2009-05-27 00:44:00 +00:00
|
|
|
uint8_t *buffer;
|
2011-10-11 21:49:59 +00:00
|
|
|
SLConfigDescr sl;
|
2010-01-13 22:52:22 +00:00
|
|
|
} PESContext;
|
2007-06-04 14:11:54 +00:00
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
extern AVInputFormat ff_mpegts_demuxer;
|
2007-09-16 23:00:44 +00:00
|
|
|
|
2007-09-25 20:58:37 +00:00
|
|
|
static void clear_program(MpegTSContext *ts, unsigned int programid)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for(i=0; i<ts->nb_prg; i++)
|
|
|
|
if(ts->prg[i].id == programid)
|
|
|
|
ts->prg[i].nb_pids = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void clear_programs(MpegTSContext *ts)
|
|
|
|
{
|
|
|
|
av_freep(&ts->prg);
|
|
|
|
ts->nb_prg=0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void add_pat_entry(MpegTSContext *ts, unsigned int programid)
|
|
|
|
{
|
2008-12-13 00:04:34 +00:00
|
|
|
struct Program *p;
|
|
|
|
void *tmp = av_realloc(ts->prg, (ts->nb_prg+1)*sizeof(struct Program));
|
2007-09-25 20:58:37 +00:00
|
|
|
if(!tmp)
|
|
|
|
return;
|
|
|
|
ts->prg = tmp;
|
|
|
|
p = &ts->prg[ts->nb_prg];
|
|
|
|
p->id = programid;
|
|
|
|
p->nb_pids = 0;
|
|
|
|
ts->nb_prg++;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid, unsigned int pid)
|
|
|
|
{
|
|
|
|
int i;
|
2008-12-13 00:04:34 +00:00
|
|
|
struct Program *p = NULL;
|
2007-09-25 20:58:37 +00:00
|
|
|
for(i=0; i<ts->nb_prg; i++) {
|
|
|
|
if(ts->prg[i].id == programid) {
|
|
|
|
p = &ts->prg[i];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(!p)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if(p->nb_pids >= MAX_PIDS_PER_PROGRAM)
|
|
|
|
return;
|
|
|
|
p->pids[p->nb_pids++] = pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2011-06-23 20:41:54 +00:00
|
|
|
* @brief discard_pid() decides if the pid is to be discarded according
|
2007-09-25 20:58:37 +00:00
|
|
|
* to caller's programs selection
|
2011-06-23 20:41:54 +00:00
|
|
|
* @param ts : - TS context
|
|
|
|
* @param pid : - pid
|
|
|
|
* @return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
|
2007-09-25 20:58:37 +00:00
|
|
|
* 0 otherwise
|
|
|
|
*/
|
|
|
|
static int discard_pid(MpegTSContext *ts, unsigned int pid)
|
|
|
|
{
|
|
|
|
int i, j, k;
|
|
|
|
int used = 0, discarded = 0;
|
2008-12-13 00:04:34 +00:00
|
|
|
struct Program *p;
|
2007-09-25 20:58:37 +00:00
|
|
|
for(i=0; i<ts->nb_prg; i++) {
|
|
|
|
p = &ts->prg[i];
|
|
|
|
for(j=0; j<p->nb_pids; j++) {
|
|
|
|
if(p->pids[j] != pid)
|
|
|
|
continue;
|
|
|
|
//is program with id p->id set to be discarded?
|
|
|
|
for(k=0; k<ts->stream->nb_programs; k++) {
|
|
|
|
if(ts->stream->programs[k]->id == p->id) {
|
|
|
|
if(ts->stream->programs[k]->discard == AVDISCARD_ALL)
|
|
|
|
discarded++;
|
|
|
|
else
|
|
|
|
used++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-05-06 09:16:36 +00:00
|
|
|
return !used && discarded;
|
2007-09-25 20:58:37 +00:00
|
|
|
}
|
|
|
|
|
2007-01-23 21:47:32 +00:00
|
|
|
/**
|
2010-06-30 15:38:06 +00:00
|
|
|
* Assemble PES packets out of TS packets, and then call the "section_cb"
|
2007-01-23 21:47:32 +00:00
|
|
|
* function when they are complete.
|
|
|
|
*/
|
2003-06-13 14:28:45 +00:00
|
|
|
static void write_section_data(AVFormatContext *s, MpegTSFilter *tss1,
|
|
|
|
const uint8_t *buf, int buf_size, int is_start)
|
|
|
|
{
|
|
|
|
MpegTSSectionFilter *tss = &tss1->u.section_filter;
|
|
|
|
int len;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
if (is_start) {
|
|
|
|
memcpy(tss->section_buf, buf, buf_size);
|
|
|
|
tss->section_index = buf_size;
|
|
|
|
tss->section_h_size = -1;
|
|
|
|
tss->end_of_section_reached = 0;
|
|
|
|
} else {
|
|
|
|
if (tss->end_of_section_reached)
|
|
|
|
return;
|
|
|
|
len = 4096 - tss->section_index;
|
|
|
|
if (buf_size < len)
|
|
|
|
len = buf_size;
|
|
|
|
memcpy(tss->section_buf + tss->section_index, buf, len);
|
|
|
|
tss->section_index += len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* compute section length if possible */
|
|
|
|
if (tss->section_h_size == -1 && tss->section_index >= 3) {
|
2007-07-06 09:32:34 +00:00
|
|
|
len = (AV_RB16(tss->section_buf + 1) & 0xfff) + 3;
|
2003-06-13 14:28:45 +00:00
|
|
|
if (len > 4096)
|
|
|
|
return;
|
|
|
|
tss->section_h_size = len;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (tss->section_h_size != -1 && tss->section_index >= tss->section_h_size) {
|
|
|
|
tss->end_of_section_reached = 1;
|
2005-02-16 23:04:11 +00:00
|
|
|
if (!tss->check_crc ||
|
2008-01-04 23:09:58 +00:00
|
|
|
av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1,
|
|
|
|
tss->section_buf, tss->section_h_size) == 0)
|
2007-06-04 13:57:00 +00:00
|
|
|
tss->section_cb(tss1, tss->section_buf, tss->section_h_size);
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-06-18 11:33:14 +00:00
|
|
|
static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, unsigned int pid,
|
2003-06-13 14:28:45 +00:00
|
|
|
SectionCallback *section_cb, void *opaque,
|
|
|
|
int check_crc)
|
|
|
|
|
|
|
|
{
|
|
|
|
MpegTSFilter *filter;
|
|
|
|
MpegTSSectionFilter *sec;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "Filter: pid=0x%x\n", pid);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
if (pid >= NB_PID_MAX || ts->pids[pid])
|
|
|
|
return NULL;
|
|
|
|
filter = av_mallocz(sizeof(MpegTSFilter));
|
2005-12-17 18:14:38 +00:00
|
|
|
if (!filter)
|
2003-06-13 14:28:45 +00:00
|
|
|
return NULL;
|
|
|
|
ts->pids[pid] = filter;
|
|
|
|
filter->type = MPEGTS_SECTION;
|
|
|
|
filter->pid = pid;
|
2011-10-10 19:50:00 +00:00
|
|
|
filter->es_id = -1;
|
2003-06-13 14:28:45 +00:00
|
|
|
filter->last_cc = -1;
|
|
|
|
sec = &filter->u.section_filter;
|
|
|
|
sec->section_cb = section_cb;
|
|
|
|
sec->opaque = opaque;
|
|
|
|
sec->section_buf = av_malloc(MAX_SECTION_SIZE);
|
|
|
|
sec->check_crc = check_crc;
|
|
|
|
if (!sec->section_buf) {
|
|
|
|
av_free(filter);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return filter;
|
|
|
|
}
|
|
|
|
|
2006-06-18 11:33:14 +00:00
|
|
|
static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid,
|
2003-06-13 14:28:45 +00:00
|
|
|
PESCallback *pes_cb,
|
|
|
|
void *opaque)
|
|
|
|
{
|
|
|
|
MpegTSFilter *filter;
|
|
|
|
MpegTSPESFilter *pes;
|
|
|
|
|
|
|
|
if (pid >= NB_PID_MAX || ts->pids[pid])
|
|
|
|
return NULL;
|
|
|
|
filter = av_mallocz(sizeof(MpegTSFilter));
|
2005-12-17 18:14:38 +00:00
|
|
|
if (!filter)
|
2003-06-13 14:28:45 +00:00
|
|
|
return NULL;
|
|
|
|
ts->pids[pid] = filter;
|
|
|
|
filter->type = MPEGTS_PES;
|
|
|
|
filter->pid = pid;
|
2011-10-10 19:50:00 +00:00
|
|
|
filter->es_id = -1;
|
2003-06-13 14:28:45 +00:00
|
|
|
filter->last_cc = -1;
|
|
|
|
pes = &filter->u.pes_filter;
|
|
|
|
pes->pes_cb = pes_cb;
|
|
|
|
pes->opaque = opaque;
|
|
|
|
return filter;
|
|
|
|
}
|
|
|
|
|
2006-06-18 11:33:14 +00:00
|
|
|
static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
|
|
|
int pid;
|
|
|
|
|
|
|
|
pid = filter->pid;
|
|
|
|
if (filter->type == MPEGTS_SECTION)
|
|
|
|
av_freep(&filter->u.section_filter.section_buf);
|
2009-02-06 20:30:18 +00:00
|
|
|
else if (filter->type == MPEGTS_PES) {
|
2009-05-27 00:44:00 +00:00
|
|
|
PESContext *pes = filter->u.pes_filter.opaque;
|
|
|
|
av_freep(&pes->buffer);
|
2009-02-06 20:30:18 +00:00
|
|
|
/* referenced private data will be freed later in
|
2011-12-11 09:38:28 +00:00
|
|
|
* avformat_close_input */
|
2009-02-06 20:30:18 +00:00
|
|
|
if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
|
|
|
|
av_freep(&filter->u.pes_filter.opaque);
|
|
|
|
}
|
|
|
|
}
|
2004-01-08 19:01:16 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
av_free(filter);
|
|
|
|
ts->pids[pid] = NULL;
|
|
|
|
}
|
|
|
|
|
2003-12-09 00:17:43 +00:00
|
|
|
static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
|
2009-08-24 21:42:25 +00:00
|
|
|
int stat[TS_MAX_PACKET_SIZE];
|
2003-12-09 00:17:43 +00:00
|
|
|
int i;
|
|
|
|
int x=0;
|
|
|
|
int best_score=0;
|
|
|
|
|
|
|
|
memset(stat, 0, packet_size*sizeof(int));
|
|
|
|
|
2008-07-18 01:07:17 +00:00
|
|
|
for(x=i=0; i<size-3; i++){
|
|
|
|
if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && (buf[i+3] & 0x30)){
|
2003-12-09 00:17:43 +00:00
|
|
|
stat[x]++;
|
|
|
|
if(stat[x] > best_score){
|
|
|
|
best_score= stat[x];
|
|
|
|
if(index) *index= x;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
x++;
|
|
|
|
if(x == packet_size) x= 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return best_score;
|
|
|
|
}
|
|
|
|
|
2002-05-20 16:27:23 +00:00
|
|
|
/* autodetect fec presence. Must have at least 1024 bytes */
|
2003-06-13 14:28:45 +00:00
|
|
|
static int get_packet_size(const uint8_t *buf, int size)
|
2002-05-20 16:27:23 +00:00
|
|
|
{
|
2006-01-02 20:13:24 +00:00
|
|
|
int score, fec_score, dvhs_score;
|
2002-05-20 16:27:23 +00:00
|
|
|
|
|
|
|
if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
|
|
|
|
return -1;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-12-09 00:17:43 +00:00
|
|
|
score = analyze(buf, size, TS_PACKET_SIZE, NULL);
|
2006-01-02 20:13:24 +00:00
|
|
|
dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL);
|
2003-12-09 00:17:43 +00:00
|
|
|
fec_score= analyze(buf, size, TS_FEC_PACKET_SIZE, NULL);
|
2006-01-02 20:13:24 +00:00
|
|
|
// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2006-01-02 20:13:24 +00:00
|
|
|
if (score > fec_score && score > dvhs_score) return TS_PACKET_SIZE;
|
|
|
|
else if(dvhs_score > score && dvhs_score > fec_score) return TS_DVHS_PACKET_SIZE;
|
|
|
|
else if(score < fec_score && dvhs_score < fec_score) return TS_FEC_PACKET_SIZE;
|
2003-12-09 00:17:43 +00:00
|
|
|
else return -1;
|
2002-05-20 16:27:23 +00:00
|
|
|
}
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
typedef struct SectionHeader {
|
|
|
|
uint8_t tid;
|
|
|
|
uint16_t id;
|
|
|
|
uint8_t version;
|
|
|
|
uint8_t sec_num;
|
|
|
|
uint8_t last_sec_num;
|
|
|
|
} SectionHeader;
|
|
|
|
|
|
|
|
static inline int get8(const uint8_t **pp, const uint8_t *p_end)
|
2002-05-20 16:27:23 +00:00
|
|
|
{
|
2003-06-13 14:28:45 +00:00
|
|
|
const uint8_t *p;
|
|
|
|
int c;
|
|
|
|
|
|
|
|
p = *pp;
|
|
|
|
if (p >= p_end)
|
|
|
|
return -1;
|
|
|
|
c = *p++;
|
|
|
|
*pp = p;
|
|
|
|
return c;
|
2002-05-20 16:27:23 +00:00
|
|
|
}
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
static inline int get16(const uint8_t **pp, const uint8_t *p_end)
|
|
|
|
{
|
|
|
|
const uint8_t *p;
|
|
|
|
int c;
|
|
|
|
|
|
|
|
p = *pp;
|
|
|
|
if ((p + 1) >= p_end)
|
|
|
|
return -1;
|
2007-07-06 09:32:34 +00:00
|
|
|
c = AV_RB16(p);
|
2003-06-13 14:28:45 +00:00
|
|
|
p += 2;
|
|
|
|
*pp = p;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
2011-10-05 12:12:42 +00:00
|
|
|
/* read and allocate a DVB string preceded by its length */
|
2003-06-13 14:28:45 +00:00
|
|
|
static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
|
2002-05-20 16:27:23 +00:00
|
|
|
{
|
|
|
|
int len;
|
2003-06-13 14:28:45 +00:00
|
|
|
const uint8_t *p;
|
|
|
|
char *str;
|
2002-05-20 16:27:23 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
p = *pp;
|
|
|
|
len = get8(&p, p_end);
|
|
|
|
if (len < 0)
|
|
|
|
return NULL;
|
|
|
|
if ((p + len) > p_end)
|
|
|
|
return NULL;
|
|
|
|
str = av_malloc(len + 1);
|
|
|
|
if (!str)
|
|
|
|
return NULL;
|
|
|
|
memcpy(str, p, len);
|
|
|
|
str[len] = '\0';
|
|
|
|
p += len;
|
|
|
|
*pp = p;
|
|
|
|
return str;
|
|
|
|
}
|
|
|
|
|
2005-12-17 18:14:38 +00:00
|
|
|
static int parse_section_header(SectionHeader *h,
|
2003-06-13 14:28:45 +00:00
|
|
|
const uint8_t **pp, const uint8_t *p_end)
|
|
|
|
{
|
|
|
|
int val;
|
|
|
|
|
|
|
|
val = get8(pp, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return -1;
|
|
|
|
h->tid = val;
|
|
|
|
*pp += 2;
|
|
|
|
val = get16(pp, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return -1;
|
|
|
|
h->id = val;
|
|
|
|
val = get8(pp, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return -1;
|
|
|
|
h->version = (val >> 1) & 0x1f;
|
|
|
|
val = get8(pp, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return -1;
|
|
|
|
h->sec_num = val;
|
|
|
|
val = get8(pp, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return -1;
|
|
|
|
h->last_sec_num = val;
|
2002-05-20 16:27:23 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
|
2009-05-31 03:12:25 +00:00
|
|
|
typedef struct {
|
|
|
|
uint32_t stream_type;
|
2010-03-30 23:30:55 +00:00
|
|
|
enum AVMediaType codec_type;
|
2009-05-31 03:12:25 +00:00
|
|
|
enum CodecID codec_id;
|
|
|
|
} StreamType;
|
|
|
|
|
|
|
|
static const StreamType ISO_types[] = {
|
2010-03-30 23:30:55 +00:00
|
|
|
{ 0x01, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
|
|
|
|
{ 0x02, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
|
|
|
|
{ 0x03, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
|
|
|
|
{ 0x04, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
|
|
|
|
{ 0x0f, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC },
|
|
|
|
{ 0x10, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG4 },
|
2010-11-02 08:32:33 +00:00
|
|
|
{ 0x11, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC_LATM }, /* LATM syntax */
|
2010-03-30 23:30:55 +00:00
|
|
|
{ 0x1b, AVMEDIA_TYPE_VIDEO, CODEC_ID_H264 },
|
|
|
|
{ 0xd1, AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
|
|
|
|
{ 0xea, AVMEDIA_TYPE_VIDEO, CODEC_ID_VC1 },
|
2009-05-31 03:12:25 +00:00
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const StreamType HDMV_types[] = {
|
2010-03-30 23:30:55 +00:00
|
|
|
{ 0x80, AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_BLURAY },
|
|
|
|
{ 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
|
|
|
|
{ 0x82, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
|
|
|
|
{ 0x83, AVMEDIA_TYPE_AUDIO, CODEC_ID_TRUEHD },
|
|
|
|
{ 0x84, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 },
|
|
|
|
{ 0x90, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_HDMV_PGS_SUBTITLE },
|
2009-05-31 03:12:25 +00:00
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
/* ATSC ? */
|
|
|
|
static const StreamType MISC_types[] = {
|
2010-03-30 23:30:55 +00:00
|
|
|
{ 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
|
|
|
|
{ 0x8a, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
|
2009-05-31 03:12:25 +00:00
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const StreamType REGD_types[] = {
|
2010-03-30 23:30:55 +00:00
|
|
|
{ MKTAG('d','r','a','c'), AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
|
|
|
|
{ MKTAG('A','C','-','3'), AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
|
2011-04-12 22:29:09 +00:00
|
|
|
{ MKTAG('B','S','S','D'), AVMEDIA_TYPE_AUDIO, CODEC_ID_S302M },
|
2009-05-31 03:12:25 +00:00
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
2009-05-31 03:40:36 +00:00
|
|
|
/* descriptor present */
|
|
|
|
static const StreamType DESC_types[] = {
|
2010-03-30 23:30:55 +00:00
|
|
|
{ 0x6a, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 }, /* AC-3 descriptor */
|
|
|
|
{ 0x7a, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
|
|
|
|
{ 0x7b, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
|
|
|
|
{ 0x56, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_TELETEXT },
|
|
|
|
{ 0x59, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
|
2009-06-20 06:09:30 +00:00
|
|
|
{ 0 },
|
2009-05-31 03:40:36 +00:00
|
|
|
};
|
|
|
|
|
2009-05-31 03:12:25 +00:00
|
|
|
static void mpegts_find_stream_type(AVStream *st,
|
|
|
|
uint32_t stream_type, const StreamType *types)
|
|
|
|
{
|
|
|
|
for (; types->stream_type; types++) {
|
|
|
|
if (stream_type == types->stream_type) {
|
|
|
|
st->codec->codec_type = types->codec_type;
|
|
|
|
st->codec->codec_id = types->codec_id;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-11-08 03:17:08 +00:00
|
|
|
static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
|
|
|
|
uint32_t stream_type, uint32_t prog_reg_desc)
|
2009-05-31 03:12:25 +00:00
|
|
|
{
|
2011-11-29 18:28:15 +00:00
|
|
|
avpriv_set_pts_info(st, 33, 1, 90000);
|
2009-05-31 03:12:25 +00:00
|
|
|
st->priv_data = pes;
|
2010-03-30 23:30:55 +00:00
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_DATA;
|
2009-06-25 19:01:16 +00:00
|
|
|
st->codec->codec_id = CODEC_ID_NONE;
|
2009-05-31 03:12:25 +00:00
|
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
|
|
pes->st = st;
|
2009-11-08 03:17:08 +00:00
|
|
|
pes->stream_type = stream_type;
|
2009-05-31 03:12:25 +00:00
|
|
|
|
2009-11-08 03:17:08 +00:00
|
|
|
av_log(pes->stream, AV_LOG_DEBUG,
|
|
|
|
"stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
|
|
|
|
st->index, pes->stream_type, pes->pid, (char*)&prog_reg_desc);
|
2009-05-31 03:12:25 +00:00
|
|
|
|
2009-05-31 04:10:15 +00:00
|
|
|
st->codec->codec_tag = pes->stream_type;
|
|
|
|
|
2009-05-31 03:45:45 +00:00
|
|
|
mpegts_find_stream_type(st, pes->stream_type, ISO_types);
|
|
|
|
if (prog_reg_desc == AV_RL32("HDMV") &&
|
2009-10-05 08:38:39 +00:00
|
|
|
st->codec->codec_id == CODEC_ID_NONE) {
|
2009-05-31 03:45:45 +00:00
|
|
|
mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
|
2009-10-05 08:38:39 +00:00
|
|
|
if (pes->stream_type == 0x83) {
|
|
|
|
// HDMV TrueHD streams also contain an AC3 coded version of the
|
|
|
|
// audio track - add a second stream for this
|
|
|
|
AVStream *sub_st;
|
|
|
|
// priv_data cannot be shared between streams
|
|
|
|
PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
|
|
|
|
if (!sub_pes)
|
2009-11-08 03:17:08 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2009-10-05 08:38:39 +00:00
|
|
|
memcpy(sub_pes, pes, sizeof(*sub_pes));
|
|
|
|
|
2011-06-18 09:43:24 +00:00
|
|
|
sub_st = avformat_new_stream(pes->stream, NULL);
|
2009-10-05 08:38:39 +00:00
|
|
|
if (!sub_st) {
|
|
|
|
av_free(sub_pes);
|
2009-11-08 03:17:08 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2009-10-05 08:38:39 +00:00
|
|
|
}
|
|
|
|
|
2011-06-18 09:43:24 +00:00
|
|
|
sub_st->id = pes->pid;
|
2011-11-29 18:28:15 +00:00
|
|
|
avpriv_set_pts_info(sub_st, 33, 1, 90000);
|
2009-10-05 08:38:39 +00:00
|
|
|
sub_st->priv_data = sub_pes;
|
2010-03-30 23:30:55 +00:00
|
|
|
sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
2009-10-05 08:38:39 +00:00
|
|
|
sub_st->codec->codec_id = CODEC_ID_AC3;
|
|
|
|
sub_st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
|
|
sub_pes->sub_st = pes->sub_st = sub_st;
|
|
|
|
}
|
|
|
|
}
|
2009-06-25 19:01:16 +00:00
|
|
|
if (st->codec->codec_id == CODEC_ID_NONE)
|
2009-05-31 03:45:45 +00:00
|
|
|
mpegts_find_stream_type(st, pes->stream_type, MISC_types);
|
2009-05-31 03:12:25 +00:00
|
|
|
|
2009-11-08 03:17:08 +00:00
|
|
|
return 0;
|
2009-05-31 03:12:25 +00:00
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2009-11-08 03:27:58 +00:00
|
|
|
static void new_pes_packet(PESContext *pes, AVPacket *pkt)
|
|
|
|
{
|
|
|
|
av_init_packet(pkt);
|
|
|
|
|
|
|
|
pkt->destruct = av_destruct_packet;
|
|
|
|
pkt->data = pes->buffer;
|
|
|
|
pkt->size = pes->data_index;
|
2011-07-24 08:13:51 +00:00
|
|
|
|
|
|
|
if(pes->total_size != MAX_PES_PAYLOAD &&
|
2011-12-16 09:01:16 +00:00
|
|
|
pes->pes_header_size + pes->data_index != pes->total_size + PES_START_SIZE) {
|
2011-08-16 01:14:12 +00:00
|
|
|
av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n");
|
2011-07-24 08:13:51 +00:00
|
|
|
pes->flags |= AV_PKT_FLAG_CORRUPT;
|
|
|
|
}
|
2009-11-08 03:27:58 +00:00
|
|
|
memset(pkt->data+pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
|
|
|
|
// Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
|
|
|
|
if (pes->sub_st && pes->stream_type == 0x83 && pes->extended_stream_id == 0x76)
|
|
|
|
pkt->stream_index = pes->sub_st->index;
|
|
|
|
else
|
|
|
|
pkt->stream_index = pes->st->index;
|
|
|
|
pkt->pts = pes->pts;
|
|
|
|
pkt->dts = pes->dts;
|
|
|
|
/* store position of first TS packet of this PES packet */
|
|
|
|
pkt->pos = pes->ts_packet_pos;
|
2011-07-24 08:13:50 +00:00
|
|
|
pkt->flags = pes->flags;
|
2009-11-08 03:27:58 +00:00
|
|
|
|
|
|
|
/* reset pts values */
|
|
|
|
pes->pts = AV_NOPTS_VALUE;
|
|
|
|
pes->dts = AV_NOPTS_VALUE;
|
|
|
|
pes->buffer = NULL;
|
|
|
|
pes->data_index = 0;
|
2011-07-24 08:13:50 +00:00
|
|
|
pes->flags = 0;
|
2009-11-08 03:27:58 +00:00
|
|
|
}
|
|
|
|
|
2011-10-11 21:49:59 +00:00
|
|
|
static uint64_t get_bits64(GetBitContext *gb, int bits)
|
|
|
|
{
|
|
|
|
uint64_t ret = 0;
|
|
|
|
while (bits > 17) {
|
|
|
|
ret <<= 17;
|
|
|
|
ret |= get_bits(gb, 17);
|
|
|
|
bits -= 17;
|
|
|
|
}
|
|
|
|
ret <<= bits;
|
|
|
|
ret |= get_bits(gb, bits);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
GetBitContext gb;
|
|
|
|
int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
|
|
|
|
int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
|
|
|
|
int dts_flag = -1, cts_flag = -1;
|
|
|
|
int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE;
|
|
|
|
init_get_bits(&gb, buf, buf_size*8);
|
|
|
|
|
|
|
|
if (sl->use_au_start)
|
|
|
|
au_start_flag = get_bits1(&gb);
|
|
|
|
if (sl->use_au_end)
|
|
|
|
au_end_flag = get_bits1(&gb);
|
|
|
|
if (!sl->use_au_start && !sl->use_au_end)
|
|
|
|
au_start_flag = au_end_flag = 1;
|
|
|
|
if (sl->ocr_len > 0)
|
|
|
|
ocr_flag = get_bits1(&gb);
|
|
|
|
if (sl->use_idle)
|
|
|
|
idle_flag = get_bits1(&gb);
|
|
|
|
if (sl->use_padding)
|
|
|
|
padding_flag = get_bits1(&gb);
|
|
|
|
if (padding_flag)
|
|
|
|
padding_bits = get_bits(&gb, 3);
|
|
|
|
|
|
|
|
if (!idle_flag && (!padding_flag || padding_bits != 0)) {
|
|
|
|
if (sl->packet_seq_num_len)
|
|
|
|
skip_bits_long(&gb, sl->packet_seq_num_len);
|
|
|
|
if (sl->degr_prior_len)
|
|
|
|
if (get_bits1(&gb))
|
|
|
|
skip_bits(&gb, sl->degr_prior_len);
|
|
|
|
if (ocr_flag)
|
|
|
|
skip_bits_long(&gb, sl->ocr_len);
|
|
|
|
if (au_start_flag) {
|
|
|
|
if (sl->use_rand_acc_pt)
|
|
|
|
get_bits1(&gb);
|
|
|
|
if (sl->au_seq_num_len > 0)
|
|
|
|
skip_bits_long(&gb, sl->au_seq_num_len);
|
|
|
|
if (sl->use_timestamps) {
|
|
|
|
dts_flag = get_bits1(&gb);
|
|
|
|
cts_flag = get_bits1(&gb);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (sl->inst_bitrate_len)
|
|
|
|
inst_bitrate_flag = get_bits1(&gb);
|
|
|
|
if (dts_flag == 1)
|
|
|
|
dts = get_bits64(&gb, sl->timestamp_len);
|
|
|
|
if (cts_flag == 1)
|
|
|
|
cts = get_bits64(&gb, sl->timestamp_len);
|
|
|
|
if (sl->au_len > 0)
|
|
|
|
skip_bits_long(&gb, sl->au_len);
|
|
|
|
if (inst_bitrate_flag)
|
|
|
|
skip_bits_long(&gb, sl->inst_bitrate_len);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dts != AV_NOPTS_VALUE)
|
|
|
|
pes->dts = dts;
|
|
|
|
if (cts != AV_NOPTS_VALUE)
|
|
|
|
pes->pts = cts;
|
|
|
|
|
2011-12-19 18:48:57 +00:00
|
|
|
if (sl->timestamp_len && sl->timestamp_res)
|
|
|
|
avpriv_set_pts_info(pes->st, sl->timestamp_len, 1, sl->timestamp_res);
|
2011-10-11 21:49:59 +00:00
|
|
|
|
|
|
|
return (get_bits_count(&gb) + 7) >> 3;
|
|
|
|
}
|
|
|
|
|
2009-11-08 03:27:58 +00:00
|
|
|
/* return non zero if a packet could be constructed */
|
|
|
|
static int mpegts_push_data(MpegTSFilter *filter,
|
|
|
|
const uint8_t *buf, int buf_size, int is_start,
|
|
|
|
int64_t pos)
|
|
|
|
{
|
|
|
|
PESContext *pes = filter->u.pes_filter.opaque;
|
|
|
|
MpegTSContext *ts = pes->ts;
|
|
|
|
const uint8_t *p;
|
|
|
|
int len, code;
|
|
|
|
|
|
|
|
if(!ts->pkt)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (is_start) {
|
|
|
|
if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
|
|
|
|
new_pes_packet(pes, ts->pkt);
|
|
|
|
ts->stop_parse = 1;
|
|
|
|
}
|
|
|
|
pes->state = MPEGTS_HEADER;
|
|
|
|
pes->data_index = 0;
|
|
|
|
pes->ts_packet_pos = pos;
|
|
|
|
}
|
|
|
|
p = buf;
|
|
|
|
while (buf_size > 0) {
|
|
|
|
switch(pes->state) {
|
|
|
|
case MPEGTS_HEADER:
|
|
|
|
len = PES_START_SIZE - pes->data_index;
|
|
|
|
if (len > buf_size)
|
|
|
|
len = buf_size;
|
|
|
|
memcpy(pes->header + pes->data_index, p, len);
|
|
|
|
pes->data_index += len;
|
|
|
|
p += len;
|
|
|
|
buf_size -= len;
|
|
|
|
if (pes->data_index == PES_START_SIZE) {
|
|
|
|
/* we got all the PES or section header. We can now
|
|
|
|
decide */
|
|
|
|
if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
|
|
|
|
pes->header[2] == 0x01) {
|
|
|
|
/* it must be an mpeg2 PES stream */
|
|
|
|
code = pes->header[3] | 0x100;
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(pes->stream, "pid=%x pes_code=%#x\n", pes->pid, code);
|
2009-11-08 03:27:58 +00:00
|
|
|
|
2010-08-09 23:21:08 +00:00
|
|
|
if ((pes->st && pes->st->discard == AVDISCARD_ALL) ||
|
2009-11-08 03:27:58 +00:00
|
|
|
code == 0x1be) /* padding_stream */
|
|
|
|
goto skip;
|
|
|
|
|
|
|
|
/* stream not present in PMT */
|
|
|
|
if (!pes->st) {
|
2011-06-18 09:43:24 +00:00
|
|
|
pes->st = avformat_new_stream(ts->stream, NULL);
|
2009-11-08 03:27:58 +00:00
|
|
|
if (!pes->st)
|
|
|
|
return AVERROR(ENOMEM);
|
2011-06-18 09:43:24 +00:00
|
|
|
pes->st->id = pes->pid;
|
2009-11-08 03:27:58 +00:00
|
|
|
mpegts_set_stream_info(pes->st, pes, 0, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
pes->total_size = AV_RB16(pes->header + 4);
|
|
|
|
/* NOTE: a zero total size means the PES size is
|
|
|
|
unbounded */
|
|
|
|
if (!pes->total_size)
|
|
|
|
pes->total_size = MAX_PES_PAYLOAD;
|
|
|
|
|
|
|
|
/* allocate pes buffer */
|
|
|
|
pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (!pes->buffer)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
|
|
|
if (code != 0x1bc && code != 0x1bf && /* program_stream_map, private_stream_2 */
|
|
|
|
code != 0x1f0 && code != 0x1f1 && /* ECM, EMM */
|
|
|
|
code != 0x1ff && code != 0x1f2 && /* program_stream_directory, DSMCC_stream */
|
|
|
|
code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */
|
|
|
|
pes->state = MPEGTS_PESHEADER;
|
|
|
|
if (pes->st->codec->codec_id == CODEC_ID_NONE) {
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(pes->stream, "pid=%x stream_type=%x probing\n",
|
2009-11-08 03:27:58 +00:00
|
|
|
pes->pid, pes->stream_type);
|
|
|
|
pes->st->codec->codec_id = CODEC_ID_PROBE;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
pes->state = MPEGTS_PAYLOAD;
|
|
|
|
pes->data_index = 0;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* otherwise, it should be a table */
|
|
|
|
/* skip packet */
|
|
|
|
skip:
|
|
|
|
pes->state = MPEGTS_SKIP;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
/**********************************************/
|
|
|
|
/* PES packing parsing */
|
|
|
|
case MPEGTS_PESHEADER:
|
|
|
|
len = PES_HEADER_SIZE - pes->data_index;
|
|
|
|
if (len < 0)
|
|
|
|
return -1;
|
|
|
|
if (len > buf_size)
|
|
|
|
len = buf_size;
|
|
|
|
memcpy(pes->header + pes->data_index, p, len);
|
|
|
|
pes->data_index += len;
|
|
|
|
p += len;
|
|
|
|
buf_size -= len;
|
|
|
|
if (pes->data_index == PES_HEADER_SIZE) {
|
|
|
|
pes->pes_header_size = pes->header[8] + 9;
|
|
|
|
pes->state = MPEGTS_PESHEADER_FILL;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case MPEGTS_PESHEADER_FILL:
|
|
|
|
len = pes->pes_header_size - pes->data_index;
|
|
|
|
if (len < 0)
|
|
|
|
return -1;
|
|
|
|
if (len > buf_size)
|
|
|
|
len = buf_size;
|
|
|
|
memcpy(pes->header + pes->data_index, p, len);
|
|
|
|
pes->data_index += len;
|
|
|
|
p += len;
|
|
|
|
buf_size -= len;
|
|
|
|
if (pes->data_index == pes->pes_header_size) {
|
|
|
|
const uint8_t *r;
|
|
|
|
unsigned int flags, pes_ext, skip;
|
|
|
|
|
|
|
|
flags = pes->header[7];
|
|
|
|
r = pes->header + 9;
|
|
|
|
pes->pts = AV_NOPTS_VALUE;
|
|
|
|
pes->dts = AV_NOPTS_VALUE;
|
|
|
|
if ((flags & 0xc0) == 0x80) {
|
2011-01-30 15:24:00 +00:00
|
|
|
pes->dts = pes->pts = ff_parse_pes_pts(r);
|
2009-11-08 03:27:58 +00:00
|
|
|
r += 5;
|
|
|
|
} else if ((flags & 0xc0) == 0xc0) {
|
2011-01-30 15:24:00 +00:00
|
|
|
pes->pts = ff_parse_pes_pts(r);
|
2009-11-08 03:27:58 +00:00
|
|
|
r += 5;
|
2011-01-30 15:24:00 +00:00
|
|
|
pes->dts = ff_parse_pes_pts(r);
|
2009-11-08 03:27:58 +00:00
|
|
|
r += 5;
|
|
|
|
}
|
|
|
|
pes->extended_stream_id = -1;
|
|
|
|
if (flags & 0x01) { /* PES extension */
|
|
|
|
pes_ext = *r++;
|
|
|
|
/* Skip PES private data, program packet sequence counter and P-STD buffer */
|
|
|
|
skip = (pes_ext >> 4) & 0xb;
|
|
|
|
skip += skip & 0x9;
|
|
|
|
r += skip;
|
|
|
|
if ((pes_ext & 0x41) == 0x01 &&
|
|
|
|
(r + 2) <= (pes->header + pes->pes_header_size)) {
|
|
|
|
/* PES extension 2 */
|
|
|
|
if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
|
|
|
|
pes->extended_stream_id = r[1];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* we got the full header. We parse it and get the payload */
|
|
|
|
pes->state = MPEGTS_PAYLOAD;
|
|
|
|
pes->data_index = 0;
|
2011-10-11 21:49:59 +00:00
|
|
|
if (pes->stream_type == 0x12) {
|
|
|
|
int sl_header_bytes = read_sl_header(pes, &pes->sl, p, buf_size);
|
|
|
|
pes->pes_header_size += sl_header_bytes;
|
|
|
|
p += sl_header_bytes;
|
|
|
|
buf_size -= sl_header_bytes;
|
|
|
|
}
|
2009-11-08 03:27:58 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case MPEGTS_PAYLOAD:
|
|
|
|
if (buf_size > 0 && pes->buffer) {
|
2010-11-29 03:43:56 +00:00
|
|
|
if (pes->data_index > 0 && pes->data_index+buf_size > pes->total_size) {
|
2009-11-08 03:27:58 +00:00
|
|
|
new_pes_packet(pes, ts->pkt);
|
|
|
|
pes->total_size = MAX_PES_PAYLOAD;
|
|
|
|
pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (!pes->buffer)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
ts->stop_parse = 1;
|
2010-11-29 03:43:56 +00:00
|
|
|
} else if (pes->data_index == 0 && buf_size > pes->total_size) {
|
|
|
|
// pes packet size is < ts size packet and pes data is padded with 0xff
|
|
|
|
// not sure if this is legal in ts but see issue #2392
|
|
|
|
buf_size = pes->total_size;
|
2009-11-08 03:27:58 +00:00
|
|
|
}
|
|
|
|
memcpy(pes->buffer+pes->data_index, p, buf_size);
|
|
|
|
pes->data_index += buf_size;
|
|
|
|
}
|
|
|
|
buf_size = 0;
|
2010-05-18 17:28:07 +00:00
|
|
|
/* emit complete packets with known packet size
|
|
|
|
* decreases demuxer delay for infrequent packets like subtitles from
|
|
|
|
* a couple of seconds to milliseconds for properly muxed files.
|
|
|
|
* total_size is the number of bytes following pes_packet_length
|
2011-12-16 09:01:16 +00:00
|
|
|
* in the pes header, i.e. not counting the first PES_START_SIZE bytes */
|
2011-02-28 00:19:50 +00:00
|
|
|
if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
|
2011-12-16 09:01:16 +00:00
|
|
|
pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) {
|
2010-05-18 17:28:07 +00:00
|
|
|
ts->stop_parse = 1;
|
|
|
|
new_pes_packet(pes, ts->pkt);
|
|
|
|
}
|
2009-11-08 03:27:58 +00:00
|
|
|
break;
|
|
|
|
case MPEGTS_SKIP:
|
|
|
|
buf_size = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
|
|
|
|
{
|
|
|
|
MpegTSFilter *tss;
|
|
|
|
PESContext *pes;
|
|
|
|
|
|
|
|
/* if no pid found, then add a pid context */
|
|
|
|
pes = av_mallocz(sizeof(PESContext));
|
|
|
|
if (!pes)
|
|
|
|
return 0;
|
|
|
|
pes->ts = ts;
|
|
|
|
pes->stream = ts->stream;
|
|
|
|
pes->pid = pid;
|
|
|
|
pes->pcr_pid = pcr_pid;
|
|
|
|
pes->state = MPEGTS_SKIP;
|
|
|
|
pes->pts = AV_NOPTS_VALUE;
|
|
|
|
pes->dts = AV_NOPTS_VALUE;
|
|
|
|
tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
|
|
|
|
if (!tss) {
|
|
|
|
av_free(pes);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return pes;
|
|
|
|
}
|
|
|
|
|
2011-10-05 18:04:42 +00:00
|
|
|
#define MAX_LEVEL 4
|
|
|
|
typedef struct {
|
|
|
|
AVFormatContext *s;
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext pb;
|
2011-10-05 18:04:42 +00:00
|
|
|
Mp4Descr *descr;
|
|
|
|
Mp4Descr *active_descr;
|
|
|
|
int descr_count;
|
|
|
|
int max_descr_count;
|
|
|
|
int level;
|
|
|
|
} MP4DescrParseContext;
|
|
|
|
|
|
|
|
static int init_MP4DescrParseContext(
|
|
|
|
MP4DescrParseContext *d, AVFormatContext *s, const uint8_t *buf,
|
|
|
|
unsigned size, Mp4Descr *descr, int max_descr_count)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
if (size > (1<<30))
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
|
|
|
|
if ((ret = ffio_init_context(&d->pb, (unsigned char*)buf, size, 0,
|
|
|
|
NULL, NULL, NULL, NULL)) < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
d->s = s;
|
|
|
|
d->level = 0;
|
|
|
|
d->descr_count = 0;
|
|
|
|
d->descr = descr;
|
|
|
|
d->active_descr = NULL;
|
|
|
|
d->max_descr_count = max_descr_count;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void update_offsets(AVIOContext *pb, int64_t *off, int *len) {
|
|
|
|
int64_t new_off = avio_tell(pb);
|
|
|
|
(*len) -= new_off - *off;
|
|
|
|
*off = new_off;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
|
|
|
|
int target_tag);
|
|
|
|
|
|
|
|
static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
while (len > 0) {
|
|
|
|
if (parse_mp4_descr(d, off, len, 0) < 0)
|
|
|
|
return -1;
|
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
avio_rb16(&d->pb); // ID
|
|
|
|
avio_r8(&d->pb);
|
|
|
|
avio_r8(&d->pb);
|
|
|
|
avio_r8(&d->pb);
|
|
|
|
avio_r8(&d->pb);
|
|
|
|
avio_r8(&d->pb);
|
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
return parse_mp4_descr_arr(d, off, len);
|
|
|
|
}
|
|
|
|
|
2011-10-10 19:50:00 +00:00
|
|
|
static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
int id_flags;
|
|
|
|
if (len < 2)
|
|
|
|
return 0;
|
|
|
|
id_flags = avio_rb16(&d->pb);
|
|
|
|
if (!(id_flags & 0x0020)) { //URL_Flag
|
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
return parse_mp4_descr_arr(d, off, len); //ES_Descriptor[]
|
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-10-05 18:04:42 +00:00
|
|
|
static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
int es_id = 0;
|
|
|
|
if (d->descr_count >= d->max_descr_count)
|
|
|
|
return -1;
|
|
|
|
ff_mp4_parse_es_descr(&d->pb, &es_id);
|
|
|
|
d->active_descr = d->descr + (d->descr_count++);
|
|
|
|
|
|
|
|
d->active_descr->es_id = es_id;
|
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
parse_mp4_descr(d, off, len, MP4DecConfigDescrTag);
|
2011-10-11 21:49:59 +00:00
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
if (len > 0)
|
|
|
|
parse_mp4_descr(d, off, len, MP4SLDescrTag);
|
2011-10-05 18:04:42 +00:00
|
|
|
d->active_descr = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
Mp4Descr *descr = d->active_descr;
|
|
|
|
if (!descr)
|
|
|
|
return -1;
|
|
|
|
d->active_descr->dec_config_descr = av_malloc(len);
|
|
|
|
if (!descr->dec_config_descr)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
descr->dec_config_descr_len = len;
|
|
|
|
avio_read(&d->pb, descr->dec_config_descr, len);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-10-11 21:49:59 +00:00
|
|
|
static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
|
|
|
|
{
|
|
|
|
Mp4Descr *descr = d->active_descr;
|
|
|
|
int predefined;
|
|
|
|
if (!descr)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
predefined = avio_r8(&d->pb);
|
|
|
|
if (!predefined) {
|
|
|
|
int lengths;
|
|
|
|
int flags = avio_r8(&d->pb);
|
|
|
|
descr->sl.use_au_start = !!(flags & 0x80);
|
|
|
|
descr->sl.use_au_end = !!(flags & 0x40);
|
|
|
|
descr->sl.use_rand_acc_pt = !!(flags & 0x20);
|
|
|
|
descr->sl.use_padding = !!(flags & 0x08);
|
|
|
|
descr->sl.use_timestamps = !!(flags & 0x04);
|
|
|
|
descr->sl.use_idle = !!(flags & 0x02);
|
|
|
|
descr->sl.timestamp_res = avio_rb32(&d->pb);
|
|
|
|
avio_rb32(&d->pb);
|
|
|
|
descr->sl.timestamp_len = avio_r8(&d->pb);
|
|
|
|
descr->sl.ocr_len = avio_r8(&d->pb);
|
|
|
|
descr->sl.au_len = avio_r8(&d->pb);
|
|
|
|
descr->sl.inst_bitrate_len = avio_r8(&d->pb);
|
|
|
|
lengths = avio_rb16(&d->pb);
|
|
|
|
descr->sl.degr_prior_len = lengths >> 12;
|
|
|
|
descr->sl.au_seq_num_len = (lengths >> 7) & 0x1f;
|
|
|
|
descr->sl.packet_seq_num_len = (lengths >> 2) & 0x1f;
|
|
|
|
} else {
|
|
|
|
av_log_missing_feature(d->s, "Predefined SLConfigDescriptor\n", 0);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-10-05 18:04:42 +00:00
|
|
|
static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
|
|
|
|
int target_tag) {
|
2010-11-23 00:51:12 +00:00
|
|
|
int tag;
|
2011-10-05 18:04:42 +00:00
|
|
|
int len1 = ff_mp4_read_descr(d->s, &d->pb, &tag);
|
|
|
|
update_offsets(&d->pb, &off, &len);
|
|
|
|
if (len < 0 || len1 > len || len1 <= 0) {
|
|
|
|
av_log(d->s, AV_LOG_ERROR, "Tag %x length violation new length %d bytes remaining %d\n", tag, len1, len);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (d->level++ >= MAX_LEVEL) {
|
|
|
|
av_log(d->s, AV_LOG_ERROR, "Maximum MP4 descriptor level exceeded\n");
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (target_tag && tag != target_tag) {
|
|
|
|
av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag, target_tag);
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (tag) {
|
|
|
|
case MP4IODescrTag:
|
|
|
|
parse_MP4IODescrTag(d, off, len1);
|
|
|
|
break;
|
2011-10-10 19:50:00 +00:00
|
|
|
case MP4ODescrTag:
|
|
|
|
parse_MP4ODescrTag(d, off, len1);
|
|
|
|
break;
|
2011-10-05 18:04:42 +00:00
|
|
|
case MP4ESDescrTag:
|
|
|
|
parse_MP4ESDescrTag(d, off, len1);
|
|
|
|
break;
|
|
|
|
case MP4DecConfigDescrTag:
|
|
|
|
parse_MP4DecConfigDescrTag(d, off, len1);
|
|
|
|
break;
|
2011-10-11 21:49:59 +00:00
|
|
|
case MP4SLDescrTag:
|
|
|
|
parse_MP4SLDescrTag(d, off, len1);
|
|
|
|
break;
|
2010-11-23 00:51:12 +00:00
|
|
|
}
|
2011-10-05 18:04:42 +00:00
|
|
|
|
|
|
|
done:
|
|
|
|
d->level--;
|
|
|
|
avio_seek(&d->pb, off + len1, SEEK_SET);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
|
|
|
|
Mp4Descr *descr, int *descr_count, int max_descr_count)
|
|
|
|
{
|
|
|
|
MP4DescrParseContext d;
|
|
|
|
if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag);
|
|
|
|
|
|
|
|
*descr_count = d.descr_count;
|
2010-11-23 00:51:12 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-10-10 19:50:00 +00:00
|
|
|
static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size,
|
|
|
|
Mp4Descr *descr, int *descr_count, int max_descr_count)
|
|
|
|
{
|
|
|
|
MP4DescrParseContext d;
|
|
|
|
if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
parse_mp4_descr_arr(&d, avio_tell(&d.pb), size);
|
|
|
|
|
|
|
|
*descr_count = d.descr_count;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-10-11 21:49:59 +00:00
|
|
|
static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
|
2011-10-10 19:50:00 +00:00
|
|
|
{
|
2011-10-11 21:49:59 +00:00
|
|
|
MpegTSContext *ts = filter->u.section_filter.opaque;
|
|
|
|
SectionHeader h;
|
|
|
|
const uint8_t *p, *p_end;
|
2011-10-10 19:50:00 +00:00
|
|
|
AVIOContext pb;
|
|
|
|
Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }};
|
|
|
|
int mp4_descr_count = 0;
|
|
|
|
int i, pid;
|
2011-10-11 21:49:59 +00:00
|
|
|
AVFormatContext *s = ts->stream;
|
|
|
|
|
|
|
|
p_end = section + section_len - 4;
|
|
|
|
p = section;
|
|
|
|
if (parse_section_header(&h, &p, p_end) < 0)
|
|
|
|
return;
|
|
|
|
if (h.tid != M4OD_TID)
|
|
|
|
return;
|
2011-10-10 19:50:00 +00:00
|
|
|
|
|
|
|
mp4_read_od(s, p, (unsigned)(p_end - p), mp4_descr, &mp4_descr_count, MAX_MP4_DESCR_COUNT);
|
|
|
|
|
|
|
|
for (pid = 0; pid < NB_PID_MAX; pid++) {
|
|
|
|
if (!ts->pids[pid])
|
|
|
|
continue;
|
|
|
|
for (i = 0; i < mp4_descr_count; i++) {
|
|
|
|
PESContext *pes;
|
|
|
|
AVStream *st;
|
|
|
|
if (ts->pids[pid]->es_id != mp4_descr[i].es_id)
|
|
|
|
continue;
|
|
|
|
if (!(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES)) {
|
|
|
|
av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
pes = ts->pids[pid]->u.pes_filter.opaque;
|
|
|
|
st = pes->st;
|
|
|
|
if (!st) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2011-10-11 21:49:59 +00:00
|
|
|
pes->sl = mp4_descr[i].sl;
|
|
|
|
|
2011-10-10 19:50:00 +00:00
|
|
|
ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
|
|
|
|
mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
|
|
|
|
ff_mp4_read_dec_config_descr(s, st, &pb);
|
|
|
|
if (st->codec->codec_id == CODEC_ID_AAC &&
|
|
|
|
st->codec->extradata_size > 0)
|
|
|
|
st->need_parsing = 0;
|
|
|
|
if (st->codec->codec_id == CODEC_ID_H264 &&
|
|
|
|
st->codec->extradata_size > 0)
|
|
|
|
st->need_parsing = 0;
|
|
|
|
|
|
|
|
if (st->codec->codec_id <= CODEC_ID_NONE) {
|
|
|
|
} else if (st->codec->codec_id < CODEC_ID_FIRST_AUDIO) {
|
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
|
|
} else if (st->codec->codec_id < CODEC_ID_FIRST_SUBTITLE) {
|
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
|
|
} else if (st->codec->codec_id < CODEC_ID_FIRST_UNKNOWN) {
|
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (i = 0; i < mp4_descr_count; i++)
|
|
|
|
av_free(mp4_descr[i].dec_config_descr);
|
|
|
|
}
|
|
|
|
|
2010-12-29 12:45:31 +00:00
|
|
|
int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type,
|
|
|
|
const uint8_t **pp, const uint8_t *desc_list_end,
|
2011-10-06 01:24:17 +00:00
|
|
|
Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
|
|
|
|
MpegTSContext *ts)
|
2010-12-29 12:45:31 +00:00
|
|
|
{
|
|
|
|
const uint8_t *desc_end;
|
2011-10-05 01:24:22 +00:00
|
|
|
int desc_len, desc_tag, desc_es_id;
|
2011-02-17 15:26:34 +00:00
|
|
|
char language[252];
|
|
|
|
int i;
|
2010-12-29 12:45:31 +00:00
|
|
|
|
|
|
|
desc_tag = get8(pp, desc_list_end);
|
|
|
|
if (desc_tag < 0)
|
|
|
|
return -1;
|
|
|
|
desc_len = get8(pp, desc_list_end);
|
|
|
|
if (desc_len < 0)
|
|
|
|
return -1;
|
|
|
|
desc_end = *pp + desc_len;
|
|
|
|
if (desc_end > desc_list_end)
|
|
|
|
return -1;
|
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(fc, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
|
2010-12-29 12:45:31 +00:00
|
|
|
|
|
|
|
if (st->codec->codec_id == CODEC_ID_NONE &&
|
|
|
|
stream_type == STREAM_TYPE_PRIVATE_DATA)
|
|
|
|
mpegts_find_stream_type(st, desc_tag, DESC_types);
|
|
|
|
|
|
|
|
switch(desc_tag) {
|
2011-10-05 01:24:22 +00:00
|
|
|
case 0x1E: /* SL descriptor */
|
|
|
|
desc_es_id = get16(pp, desc_end);
|
2011-10-10 19:50:00 +00:00
|
|
|
if (ts && ts->pids[pid])
|
|
|
|
ts->pids[pid]->es_id = desc_es_id;
|
2011-10-05 06:43:59 +00:00
|
|
|
for (i = 0; i < mp4_descr_count; i++)
|
|
|
|
if (mp4_descr[i].dec_config_descr_len &&
|
|
|
|
mp4_descr[i].es_id == desc_es_id) {
|
2011-10-05 01:24:22 +00:00
|
|
|
AVIOContext pb;
|
2011-10-05 06:43:59 +00:00
|
|
|
ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
|
|
|
|
mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
|
2011-10-05 01:24:22 +00:00
|
|
|
ff_mp4_read_dec_config_descr(fc, st, &pb);
|
|
|
|
if (st->codec->codec_id == CODEC_ID_AAC &&
|
|
|
|
st->codec->extradata_size > 0)
|
|
|
|
st->need_parsing = 0;
|
2011-10-06 01:24:17 +00:00
|
|
|
if (st->codec->codec_id == CODEC_ID_MPEG4SYSTEMS)
|
|
|
|
mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1);
|
2011-10-05 01:24:22 +00:00
|
|
|
}
|
|
|
|
break;
|
2010-12-29 12:45:31 +00:00
|
|
|
case 0x1F: /* FMC descriptor */
|
|
|
|
get16(pp, desc_end);
|
2011-10-05 06:43:59 +00:00
|
|
|
if (mp4_descr_count > 0 && st->codec->codec_id == CODEC_ID_AAC_LATM &&
|
|
|
|
mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) {
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext pb;
|
2011-10-05 06:43:59 +00:00
|
|
|
ffio_init_context(&pb, mp4_descr->dec_config_descr,
|
|
|
|
mp4_descr->dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
|
2010-12-29 12:45:31 +00:00
|
|
|
ff_mp4_read_dec_config_descr(fc, st, &pb);
|
|
|
|
if (st->codec->codec_id == CODEC_ID_AAC &&
|
|
|
|
st->codec->extradata_size > 0)
|
|
|
|
st->need_parsing = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 0x56: /* DVB teletext descriptor */
|
|
|
|
language[0] = get8(pp, desc_end);
|
|
|
|
language[1] = get8(pp, desc_end);
|
|
|
|
language[2] = get8(pp, desc_end);
|
|
|
|
language[3] = 0;
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&st->metadata, "language", language, 0);
|
2010-12-29 12:45:31 +00:00
|
|
|
break;
|
|
|
|
case 0x59: /* subtitling descriptor */
|
|
|
|
language[0] = get8(pp, desc_end);
|
|
|
|
language[1] = get8(pp, desc_end);
|
|
|
|
language[2] = get8(pp, desc_end);
|
|
|
|
language[3] = 0;
|
2011-02-20 01:38:23 +00:00
|
|
|
/* hearing impaired subtitles detection */
|
|
|
|
switch(get8(pp, desc_end)) {
|
|
|
|
case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */
|
|
|
|
case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */
|
|
|
|
case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */
|
|
|
|
case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */
|
|
|
|
case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */
|
|
|
|
case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */
|
|
|
|
st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
|
|
|
|
break;
|
|
|
|
}
|
2010-12-29 12:45:31 +00:00
|
|
|
if (st->codec->extradata) {
|
|
|
|
if (st->codec->extradata_size == 4 && memcmp(st->codec->extradata, *pp, 4))
|
|
|
|
av_log_ask_for_sample(fc, "DVB sub with multiple IDs\n");
|
|
|
|
} else {
|
|
|
|
st->codec->extradata = av_malloc(4 + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (st->codec->extradata) {
|
|
|
|
st->codec->extradata_size = 4;
|
|
|
|
memcpy(st->codec->extradata, *pp, 4);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
*pp += 4;
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&st->metadata, "language", language, 0);
|
2010-12-29 12:45:31 +00:00
|
|
|
break;
|
|
|
|
case 0x0a: /* ISO 639 language descriptor */
|
2011-02-17 15:26:34 +00:00
|
|
|
for (i = 0; i + 4 <= desc_len; i += 4) {
|
|
|
|
language[i + 0] = get8(pp, desc_end);
|
|
|
|
language[i + 1] = get8(pp, desc_end);
|
|
|
|
language[i + 2] = get8(pp, desc_end);
|
|
|
|
language[i + 3] = ',';
|
2011-02-14 18:55:04 +00:00
|
|
|
switch (get8(pp, desc_end)) {
|
|
|
|
case 0x01: st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS; break;
|
|
|
|
case 0x02: st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; break;
|
|
|
|
case 0x03: st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED; break;
|
|
|
|
}
|
2011-02-17 15:26:34 +00:00
|
|
|
}
|
|
|
|
if (i) {
|
|
|
|
language[i - 1] = 0;
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&st->metadata, "language", language, 0);
|
2011-02-17 15:26:34 +00:00
|
|
|
}
|
2010-12-29 12:45:31 +00:00
|
|
|
break;
|
|
|
|
case 0x05: /* registration descriptor */
|
|
|
|
st->codec->codec_tag = bytestream_get_le32(pp);
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(fc, "reg_desc=%.4s\n", (char*)&st->codec->codec_tag);
|
2010-12-29 12:45:31 +00:00
|
|
|
if (st->codec->codec_id == CODEC_ID_NONE &&
|
|
|
|
stream_type == STREAM_TYPE_PRIVATE_DATA)
|
|
|
|
mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
*pp = desc_end;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-06-04 13:57:00 +00:00
|
|
|
static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
2007-06-04 13:57:00 +00:00
|
|
|
MpegTSContext *ts = filter->u.section_filter.opaque;
|
2003-06-13 14:28:45 +00:00
|
|
|
SectionHeader h1, *h = &h1;
|
2005-07-17 00:28:12 +00:00
|
|
|
PESContext *pes;
|
|
|
|
AVStream *st;
|
2010-12-29 12:45:31 +00:00
|
|
|
const uint8_t *p, *p_end, *desc_list_end;
|
2005-07-17 00:28:12 +00:00
|
|
|
int program_info_length, pcr_pid, pid, stream_type;
|
2010-12-29 12:45:31 +00:00
|
|
|
int desc_list_len;
|
2009-05-31 02:56:15 +00:00
|
|
|
uint32_t prog_reg_desc = 0; /* registration descriptor */
|
2011-10-05 06:43:59 +00:00
|
|
|
|
|
|
|
Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }};
|
|
|
|
int mp4_descr_count = 0;
|
|
|
|
int i;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "PMT: len %i\n", section_len);
|
2011-05-27 18:34:01 +00:00
|
|
|
hex_dump_debug(ts->stream, (uint8_t *)section, section_len);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
p_end = section + section_len - 4;
|
|
|
|
p = section;
|
|
|
|
if (parse_section_header(h, &p, p_end) < 0)
|
|
|
|
return;
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "sid=0x%x sec_num=%d/%d\n",
|
2007-01-23 21:41:30 +00:00
|
|
|
h->id, h->sec_num, h->last_sec_num);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2007-06-04 14:17:43 +00:00
|
|
|
if (h->tid != PMT_TID)
|
2003-06-13 14:28:45 +00:00
|
|
|
return;
|
|
|
|
|
2007-09-25 20:58:37 +00:00
|
|
|
clear_program(ts, h->id);
|
2003-06-13 14:28:45 +00:00
|
|
|
pcr_pid = get16(&p, p_end) & 0x1fff;
|
|
|
|
if (pcr_pid < 0)
|
|
|
|
return;
|
2007-09-25 20:58:37 +00:00
|
|
|
add_pid_to_pmt(ts, h->id, pcr_pid);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "pcr_pid=0x%x\n", pcr_pid);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
program_info_length = get16(&p, p_end) & 0xfff;
|
|
|
|
if (program_info_length < 0)
|
|
|
|
return;
|
2008-02-23 10:57:38 +00:00
|
|
|
while(program_info_length >= 2) {
|
|
|
|
uint8_t tag, len;
|
|
|
|
tag = get8(&p, p_end);
|
|
|
|
len = get8(&p, p_end);
|
2010-11-23 00:51:12 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "program tag: 0x%02x len=%d\n", tag, len);
|
2010-11-23 00:51:12 +00:00
|
|
|
|
2008-02-23 10:57:38 +00:00
|
|
|
if(len > program_info_length - 2)
|
|
|
|
//something else is broken, exit the program_descriptors_loop
|
|
|
|
break;
|
|
|
|
program_info_length -= len + 2;
|
2010-11-23 00:51:12 +00:00
|
|
|
if (tag == 0x1d) { // IOD descriptor
|
|
|
|
get8(&p, p_end); // scope
|
|
|
|
get8(&p, p_end); // label
|
|
|
|
len -= 2;
|
2011-10-05 18:04:42 +00:00
|
|
|
mp4_read_iods(ts->stream, p, len, mp4_descr + mp4_descr_count,
|
|
|
|
&mp4_descr_count, MAX_MP4_DESCR_COUNT);
|
2010-11-23 00:51:12 +00:00
|
|
|
} else if (tag == 0x05 && len >= 4) { // registration descriptor
|
2009-05-31 02:56:15 +00:00
|
|
|
prog_reg_desc = bytestream_get_le32(&p);
|
2008-02-23 10:57:38 +00:00
|
|
|
len -= 4;
|
|
|
|
}
|
|
|
|
p += len;
|
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
p += program_info_length;
|
|
|
|
if (p >= p_end)
|
2010-11-23 01:04:49 +00:00
|
|
|
goto out;
|
2009-07-29 02:17:08 +00:00
|
|
|
|
|
|
|
// stop parsing after pmt, we found header
|
|
|
|
if (!ts->stream->nb_streams)
|
|
|
|
ts->stop_parse = 1;
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
for(;;) {
|
2005-07-17 00:28:12 +00:00
|
|
|
st = 0;
|
2011-10-06 01:24:17 +00:00
|
|
|
pes = NULL;
|
2003-06-13 14:28:45 +00:00
|
|
|
stream_type = get8(&p, p_end);
|
|
|
|
if (stream_type < 0)
|
|
|
|
break;
|
|
|
|
pid = get16(&p, p_end) & 0x1fff;
|
|
|
|
if (pid < 0)
|
|
|
|
break;
|
2009-05-31 03:35:29 +00:00
|
|
|
|
2011-10-30 16:56:57 +00:00
|
|
|
/* now create stream */
|
2009-05-31 03:35:29 +00:00
|
|
|
if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
|
|
|
|
pes = ts->pids[pid]->u.pes_filter.opaque;
|
2011-06-18 09:43:24 +00:00
|
|
|
if (!pes->st) {
|
|
|
|
pes->st = avformat_new_stream(pes->stream, NULL);
|
2011-11-08 13:13:30 +00:00
|
|
|
pes->st->id = pes->pid;
|
2011-06-18 09:43:24 +00:00
|
|
|
}
|
2009-05-31 03:35:29 +00:00
|
|
|
st = pes->st;
|
2011-10-06 01:24:17 +00:00
|
|
|
} else if (stream_type != 0x13) {
|
2009-05-31 03:35:29 +00:00
|
|
|
if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
|
2009-11-08 03:17:08 +00:00
|
|
|
pes = add_pes_stream(ts, pid, pcr_pid);
|
2011-06-18 09:43:24 +00:00
|
|
|
if (pes) {
|
|
|
|
st = avformat_new_stream(pes->stream, NULL);
|
|
|
|
st->id = pes->pid;
|
|
|
|
}
|
2011-10-06 01:24:17 +00:00
|
|
|
} else {
|
|
|
|
int idx = ff_find_stream_index(ts->stream, pid);
|
|
|
|
if (idx >= 0) {
|
|
|
|
st = ts->stream->streams[idx];
|
|
|
|
} else {
|
2011-12-19 18:41:22 +00:00
|
|
|
st = avformat_new_stream(ts->stream, NULL);
|
2011-10-06 01:24:17 +00:00
|
|
|
st->id = pid;
|
2011-10-10 19:50:00 +00:00
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_DATA;
|
2011-10-06 01:24:17 +00:00
|
|
|
}
|
2009-05-31 03:35:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!st)
|
2010-11-23 01:04:49 +00:00
|
|
|
goto out;
|
2009-05-31 03:35:29 +00:00
|
|
|
|
2011-10-06 01:24:17 +00:00
|
|
|
if (pes && !pes->stream_type)
|
2009-11-08 03:17:08 +00:00
|
|
|
mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
|
|
|
|
|
2009-05-31 03:35:29 +00:00
|
|
|
add_pid_to_pmt(ts, h->id, pid);
|
|
|
|
|
2010-03-15 23:14:07 +00:00
|
|
|
ff_program_add_stream_index(ts->stream, h->id, st->index);
|
2009-05-31 03:35:29 +00:00
|
|
|
|
2005-07-17 00:28:12 +00:00
|
|
|
desc_list_len = get16(&p, p_end) & 0xfff;
|
|
|
|
if (desc_list_len < 0)
|
|
|
|
break;
|
|
|
|
desc_list_end = p + desc_list_len;
|
2009-04-12 02:19:40 +00:00
|
|
|
if (desc_list_end > p_end)
|
2003-06-13 14:28:45 +00:00
|
|
|
break;
|
2005-07-17 00:28:12 +00:00
|
|
|
for(;;) {
|
2010-12-29 12:45:31 +00:00
|
|
|
if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p, desc_list_end,
|
2011-10-06 01:24:17 +00:00
|
|
|
mp4_descr, mp4_descr_count, pid, ts) < 0)
|
2010-11-23 00:51:12 +00:00
|
|
|
break;
|
2009-10-05 08:38:39 +00:00
|
|
|
|
2011-10-06 01:24:17 +00:00
|
|
|
if (pes && prog_reg_desc == AV_RL32("HDMV") && stream_type == 0x83 && pes->sub_st) {
|
2010-03-15 23:14:07 +00:00
|
|
|
ff_program_add_stream_index(ts->stream, h->id, pes->sub_st->index);
|
2009-10-05 08:38:39 +00:00
|
|
|
pes->sub_st->codec->codec_tag = st->codec->codec_tag;
|
|
|
|
}
|
2005-07-17 00:28:12 +00:00
|
|
|
}
|
|
|
|
p = desc_list_end;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
2010-11-23 01:04:49 +00:00
|
|
|
|
|
|
|
out:
|
2011-10-05 06:43:59 +00:00
|
|
|
for (i = 0; i < mp4_descr_count; i++)
|
|
|
|
av_free(mp4_descr[i].dec_config_descr);
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
|
2007-06-04 13:57:00 +00:00
|
|
|
static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
2007-06-04 13:57:00 +00:00
|
|
|
MpegTSContext *ts = filter->u.section_filter.opaque;
|
2003-06-13 14:28:45 +00:00
|
|
|
SectionHeader h1, *h = &h1;
|
|
|
|
const uint8_t *p, *p_end;
|
|
|
|
int sid, pmt_pid;
|
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "PAT:\n");
|
2011-05-27 18:34:01 +00:00
|
|
|
hex_dump_debug(ts->stream, (uint8_t *)section, section_len);
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
p_end = section + section_len - 4;
|
|
|
|
p = section;
|
|
|
|
if (parse_section_header(h, &p, p_end) < 0)
|
|
|
|
return;
|
|
|
|
if (h->tid != PAT_TID)
|
|
|
|
return;
|
|
|
|
|
2007-09-25 20:58:37 +00:00
|
|
|
clear_programs(ts);
|
2003-06-13 14:28:45 +00:00
|
|
|
for(;;) {
|
|
|
|
sid = get16(&p, p_end);
|
|
|
|
if (sid < 0)
|
|
|
|
break;
|
|
|
|
pmt_pid = get16(&p, p_end) & 0x1fff;
|
|
|
|
if (pmt_pid < 0)
|
|
|
|
break;
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
if (sid == 0x0000) {
|
|
|
|
/* NIT info */
|
|
|
|
} else {
|
2007-09-25 20:49:11 +00:00
|
|
|
av_new_program(ts->stream, sid);
|
2010-11-25 00:29:44 +00:00
|
|
|
if (ts->pids[pmt_pid])
|
|
|
|
mpegts_close_filter(ts, ts->pids[pmt_pid]);
|
2007-06-04 14:53:47 +00:00
|
|
|
mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1);
|
2007-09-25 20:58:37 +00:00
|
|
|
add_pat_entry(ts, sid);
|
|
|
|
add_pid_to_pmt(ts, sid, 0); //add pat pid to program
|
|
|
|
add_pid_to_pmt(ts, sid, pmt_pid);
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-06-04 13:57:00 +00:00
|
|
|
static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
2007-06-04 13:57:00 +00:00
|
|
|
MpegTSContext *ts = filter->u.section_filter.opaque;
|
2003-06-13 14:28:45 +00:00
|
|
|
SectionHeader h1, *h = &h1;
|
|
|
|
const uint8_t *p, *p_end, *desc_list_end, *desc_end;
|
|
|
|
int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
|
|
|
|
char *name, *provider_name;
|
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "SDT:\n");
|
2011-05-27 18:34:01 +00:00
|
|
|
hex_dump_debug(ts->stream, (uint8_t *)section, section_len);
|
2003-06-13 14:28:45 +00:00
|
|
|
|
|
|
|
p_end = section + section_len - 4;
|
|
|
|
p = section;
|
|
|
|
if (parse_section_header(h, &p, p_end) < 0)
|
|
|
|
return;
|
|
|
|
if (h->tid != SDT_TID)
|
|
|
|
return;
|
|
|
|
onid = get16(&p, p_end);
|
|
|
|
if (onid < 0)
|
|
|
|
return;
|
|
|
|
val = get8(&p, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
return;
|
|
|
|
for(;;) {
|
|
|
|
sid = get16(&p, p_end);
|
|
|
|
if (sid < 0)
|
|
|
|
break;
|
|
|
|
val = get8(&p, p_end);
|
|
|
|
if (val < 0)
|
|
|
|
break;
|
|
|
|
desc_list_len = get16(&p, p_end) & 0xfff;
|
|
|
|
if (desc_list_len < 0)
|
|
|
|
break;
|
|
|
|
desc_list_end = p + desc_list_len;
|
|
|
|
if (desc_list_end > p_end)
|
|
|
|
break;
|
|
|
|
for(;;) {
|
|
|
|
desc_tag = get8(&p, desc_list_end);
|
|
|
|
if (desc_tag < 0)
|
|
|
|
break;
|
|
|
|
desc_len = get8(&p, desc_list_end);
|
|
|
|
desc_end = p + desc_len;
|
|
|
|
if (desc_end > desc_list_end)
|
|
|
|
break;
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "tag: 0x%02x len=%d\n",
|
2007-01-23 21:41:30 +00:00
|
|
|
desc_tag, desc_len);
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
switch(desc_tag) {
|
|
|
|
case 0x48:
|
|
|
|
service_type = get8(&p, p_end);
|
|
|
|
if (service_type < 0)
|
|
|
|
break;
|
|
|
|
provider_name = getstr8(&p, p_end);
|
|
|
|
if (!provider_name)
|
|
|
|
break;
|
|
|
|
name = getstr8(&p, p_end);
|
2007-09-25 20:49:11 +00:00
|
|
|
if (name) {
|
|
|
|
AVProgram *program = av_new_program(ts->stream, sid);
|
2009-02-10 00:25:21 +00:00
|
|
|
if(program) {
|
2011-05-22 10:46:29 +00:00
|
|
|
av_dict_set(&program->metadata, "service_name", name, 0);
|
|
|
|
av_dict_set(&program->metadata, "service_provider", provider_name, 0);
|
2009-02-10 00:25:21 +00:00
|
|
|
}
|
2007-09-25 20:49:11 +00:00
|
|
|
}
|
2008-04-24 22:16:00 +00:00
|
|
|
av_free(name);
|
|
|
|
av_free(provider_name);
|
2003-06-13 14:28:45 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
p = desc_end;
|
|
|
|
}
|
|
|
|
p = desc_list_end;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* handle one TS packet */
|
2009-05-27 00:56:31 +00:00
|
|
|
static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
|
2002-05-20 16:27:23 +00:00
|
|
|
{
|
2003-10-29 14:16:31 +00:00
|
|
|
AVFormatContext *s = ts->stream;
|
2003-06-13 14:28:45 +00:00
|
|
|
MpegTSFilter *tss;
|
2011-07-24 08:13:50 +00:00
|
|
|
int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
|
|
|
|
has_adaptation, has_payload;
|
2003-06-13 14:28:45 +00:00
|
|
|
const uint8_t *p, *p_end;
|
2009-02-28 18:35:53 +00:00
|
|
|
int64_t pos;
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2007-07-06 09:32:34 +00:00
|
|
|
pid = AV_RB16(packet + 1) & 0x1fff;
|
2007-09-25 20:58:37 +00:00
|
|
|
if(pid && discard_pid(ts, pid))
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
is_start = packet[1] & 0x40;
|
|
|
|
tss = ts->pids[pid];
|
|
|
|
if (ts->auto_guess && tss == NULL && is_start) {
|
2009-11-08 03:17:08 +00:00
|
|
|
add_pes_stream(ts, pid, -1);
|
2003-06-13 14:28:45 +00:00
|
|
|
tss = ts->pids[pid];
|
|
|
|
}
|
|
|
|
if (!tss)
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2011-07-24 08:13:50 +00:00
|
|
|
afc = (packet[3] >> 4) & 3;
|
|
|
|
if (afc == 0) /* reserved value */
|
|
|
|
return 0;
|
|
|
|
has_adaptation = afc & 2;
|
|
|
|
has_payload = afc & 1;
|
|
|
|
is_discontinuity = has_adaptation
|
|
|
|
&& packet[4] != 0 /* with length > 0 */
|
|
|
|
&& (packet[5] & 0x80); /* and discontinuity indicated */
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
/* continuity check (currently not used) */
|
|
|
|
cc = (packet[3] & 0xf);
|
2011-07-24 08:13:50 +00:00
|
|
|
expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc;
|
|
|
|
cc_ok = pid == 0x1FFF // null packet PID
|
|
|
|
|| is_discontinuity
|
|
|
|
|| tss->last_cc < 0
|
|
|
|
|| expected_cc == cc;
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
tss->last_cc = cc;
|
2011-07-24 08:13:50 +00:00
|
|
|
if (!cc_ok) {
|
2011-09-08 17:38:48 +00:00
|
|
|
av_log(ts->stream, AV_LOG_WARNING,
|
|
|
|
"Continuity check failed for pid %d expected %d got %d\n",
|
|
|
|
pid, expected_cc, cc);
|
2011-07-24 08:13:50 +00:00
|
|
|
if(tss->type == MPEGTS_PES) {
|
|
|
|
PESContext *pc = tss->u.pes_filter.opaque;
|
|
|
|
pc->flags |= AV_PKT_FLAG_CORRUPT;
|
|
|
|
}
|
|
|
|
}
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-07-24 08:13:50 +00:00
|
|
|
if (!has_payload)
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2011-07-24 08:13:50 +00:00
|
|
|
p = packet + 4;
|
|
|
|
if (has_adaptation) {
|
2011-10-05 12:12:42 +00:00
|
|
|
/* skip adaptation field */
|
2003-06-13 14:28:45 +00:00
|
|
|
p += p[0] + 1;
|
|
|
|
}
|
|
|
|
/* if past the end of packet, ignore */
|
|
|
|
p_end = packet + TS_PACKET_SIZE;
|
|
|
|
if (p >= p_end)
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
pos = avio_tell(ts->stream->pb);
|
2009-02-28 18:35:53 +00:00
|
|
|
ts->pos47= pos % ts->raw_packet_size;
|
2008-04-23 21:16:25 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
if (tss->type == MPEGTS_SECTION) {
|
|
|
|
if (is_start) {
|
|
|
|
/* pointer field present */
|
|
|
|
len = *p++;
|
|
|
|
if (p + len > p_end)
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
if (len && cc_ok) {
|
2005-02-16 23:04:11 +00:00
|
|
|
/* write remaining section bytes */
|
2005-12-17 18:14:38 +00:00
|
|
|
write_section_data(s, tss,
|
2003-06-13 14:28:45 +00:00
|
|
|
p, len, 0);
|
2005-02-16 23:04:11 +00:00
|
|
|
/* check whether filter has been closed */
|
|
|
|
if (!ts->pids[pid])
|
2009-05-27 00:56:31 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
p += len;
|
|
|
|
if (p < p_end) {
|
2005-12-17 18:14:38 +00:00
|
|
|
write_section_data(s, tss,
|
2003-06-13 14:28:45 +00:00
|
|
|
p, p_end - p, 1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if (cc_ok) {
|
2005-12-17 18:14:38 +00:00
|
|
|
write_section_data(s, tss,
|
2003-06-13 14:28:45 +00:00
|
|
|
p, p_end - p, 0);
|
2003-07-15 13:21:39 +00:00
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
} else {
|
2009-05-27 00:56:31 +00:00
|
|
|
int ret;
|
2009-02-28 18:35:53 +00:00
|
|
|
// Note: The position here points actually behind the current packet.
|
2009-05-27 00:56:31 +00:00
|
|
|
if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
|
|
|
|
pos - ts->raw_packet_size)) < 0)
|
|
|
|
return ret;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
2009-05-27 00:56:31 +00:00
|
|
|
|
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
|
2003-07-15 13:21:39 +00:00
|
|
|
/* XXX: try to find a better synchro over several packets (use
|
|
|
|
get_packet_size() ?) */
|
2009-10-18 20:08:13 +00:00
|
|
|
static int mpegts_resync(AVFormatContext *s)
|
2003-07-15 13:21:39 +00:00
|
|
|
{
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *pb = s->pb;
|
2003-07-15 13:21:39 +00:00
|
|
|
int c, i;
|
|
|
|
|
|
|
|
for(i = 0;i < MAX_RESYNC_SIZE; i++) {
|
2011-03-06 18:59:29 +00:00
|
|
|
c = avio_r8(pb);
|
2011-03-07 20:50:25 +00:00
|
|
|
if (pb->eof_reached)
|
2003-07-15 13:21:39 +00:00
|
|
|
return -1;
|
|
|
|
if (c == 0x47) {
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(pb, -1, SEEK_CUR);
|
2003-07-15 13:21:39 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
2009-10-18 20:08:13 +00:00
|
|
|
av_log(s, AV_LOG_ERROR, "max resync size reached, could not find sync byte\n");
|
2003-07-15 13:21:39 +00:00
|
|
|
/* no sync found */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
/* return -1 if error or EOF. Return 0 if OK. */
|
2009-10-18 20:08:13 +00:00
|
|
|
static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *pb = s->pb;
|
2003-10-29 14:16:31 +00:00
|
|
|
int skip, len;
|
|
|
|
|
|
|
|
for(;;) {
|
2011-02-21 15:43:01 +00:00
|
|
|
len = avio_read(pb, buf, TS_PACKET_SIZE);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (len != TS_PACKET_SIZE)
|
2011-03-31 14:58:50 +00:00
|
|
|
return len < 0 ? len : AVERROR_EOF;
|
2011-10-05 12:12:42 +00:00
|
|
|
/* check packet sync byte */
|
2003-10-29 14:16:31 +00:00
|
|
|
if (buf[0] != 0x47) {
|
|
|
|
/* find a new packet start */
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(pb, -TS_PACKET_SIZE, SEEK_CUR);
|
2009-10-18 20:08:13 +00:00
|
|
|
if (mpegts_resync(s) < 0)
|
|
|
|
return AVERROR(EAGAIN);
|
2003-10-29 14:16:31 +00:00
|
|
|
else
|
|
|
|
continue;
|
|
|
|
} else {
|
|
|
|
skip = raw_packet_size - TS_PACKET_SIZE;
|
|
|
|
if (skip > 0)
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(pb, skip);
|
2003-10-29 14:16:31 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int handle_packets(MpegTSContext *ts, int nb_packets)
|
|
|
|
{
|
|
|
|
AVFormatContext *s = ts->stream;
|
|
|
|
uint8_t packet[TS_PACKET_SIZE];
|
2011-07-24 08:13:50 +00:00
|
|
|
int packet_num, ret = 0;
|
|
|
|
|
|
|
|
if (avio_tell(s->pb) != ts->last_pos) {
|
|
|
|
int i;
|
2011-09-13 15:00:16 +00:00
|
|
|
av_dlog(ts->stream, "Skipping after seek\n");
|
2011-07-24 08:13:50 +00:00
|
|
|
/* seek detected, flush pes buffer */
|
|
|
|
for (i = 0; i < NB_PID_MAX; i++) {
|
2011-09-08 13:18:48 +00:00
|
|
|
if (ts->pids[i]) {
|
|
|
|
if (ts->pids[i]->type == MPEGTS_PES) {
|
|
|
|
PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
|
|
|
|
av_freep(&pes->buffer);
|
|
|
|
pes->data_index = 0;
|
|
|
|
pes->state = MPEGTS_SKIP; /* skip until pes header */
|
|
|
|
}
|
2011-07-24 08:13:50 +00:00
|
|
|
ts->pids[i]->last_cc = -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
|
|
|
|
ts->stop_parse = 0;
|
|
|
|
packet_num = 0;
|
2002-05-20 16:27:23 +00:00
|
|
|
for(;;) {
|
2007-06-04 14:17:43 +00:00
|
|
|
if (ts->stop_parse>0)
|
2003-06-13 14:28:45 +00:00
|
|
|
break;
|
|
|
|
packet_num++;
|
|
|
|
if (nb_packets != 0 && packet_num >= nb_packets)
|
|
|
|
break;
|
2009-10-18 20:08:13 +00:00
|
|
|
ret = read_packet(s, packet, ts->raw_packet_size);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (ret != 0)
|
2011-07-24 08:13:50 +00:00
|
|
|
break;
|
2009-05-27 00:56:31 +00:00
|
|
|
ret = handle_packet(ts, packet);
|
|
|
|
if (ret != 0)
|
2011-07-24 08:13:50 +00:00
|
|
|
break;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
2011-07-24 08:13:50 +00:00
|
|
|
ts->last_pos = avio_tell(s->pb);
|
|
|
|
return ret;
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
2002-05-20 16:27:23 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
static int mpegts_probe(AVProbeData *p)
|
|
|
|
{
|
2003-07-15 13:21:39 +00:00
|
|
|
#if 1
|
2003-12-09 00:17:43 +00:00
|
|
|
const int size= p->buf_size;
|
2006-01-02 20:13:24 +00:00
|
|
|
int score, fec_score, dvhs_score;
|
2009-02-03 11:01:57 +00:00
|
|
|
int check_count= size / TS_FEC_PACKET_SIZE;
|
2003-12-09 00:17:43 +00:00
|
|
|
#define CHECK_COUNT 10
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2009-02-03 11:01:57 +00:00
|
|
|
if (check_count < CHECK_COUNT)
|
2003-12-09 00:17:43 +00:00
|
|
|
return -1;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2009-02-03 11:01:57 +00:00
|
|
|
score = analyze(p->buf, TS_PACKET_SIZE *check_count, TS_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
|
|
|
|
dvhs_score= analyze(p->buf, TS_DVHS_PACKET_SIZE*check_count, TS_DVHS_PACKET_SIZE, NULL)*CHECK_COUNT/check_count;
|
|
|
|
fec_score = analyze(p->buf, TS_FEC_PACKET_SIZE *check_count, TS_FEC_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
|
2006-01-02 20:13:24 +00:00
|
|
|
// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-12-09 00:17:43 +00:00
|
|
|
// we need a clear definition for the returned score otherwise things will become messy sooner or later
|
2006-01-02 20:13:24 +00:00
|
|
|
if (score > fec_score && score > dvhs_score && score > 6) return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
|
|
|
|
else if(dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6) return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
|
2003-12-09 00:17:43 +00:00
|
|
|
else if( fec_score > 6) return AVPROBE_SCORE_MAX + fec_score - CHECK_COUNT;
|
|
|
|
else return -1;
|
2003-07-15 13:21:39 +00:00
|
|
|
#else
|
|
|
|
/* only use the extension for safer guess */
|
2010-03-08 23:46:04 +00:00
|
|
|
if (av_match_ext(p->filename, "ts"))
|
2003-07-15 13:21:39 +00:00
|
|
|
return AVPROBE_SCORE_MAX;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
#endif
|
2003-06-13 14:28:45 +00:00
|
|
|
}
|
|
|
|
|
2008-10-02 16:28:58 +00:00
|
|
|
/* return the 90kHz PCR and the extension for the 27MHz PCR. return
|
2003-10-29 14:16:31 +00:00
|
|
|
(-1) if not available */
|
2005-12-17 18:14:38 +00:00
|
|
|
static int parse_pcr(int64_t *ppcr_high, int *ppcr_low,
|
2003-10-29 14:16:31 +00:00
|
|
|
const uint8_t *packet)
|
|
|
|
{
|
|
|
|
int afc, len, flags;
|
|
|
|
const uint8_t *p;
|
|
|
|
unsigned int v;
|
|
|
|
|
|
|
|
afc = (packet[3] >> 4) & 3;
|
|
|
|
if (afc <= 1)
|
|
|
|
return -1;
|
|
|
|
p = packet + 4;
|
|
|
|
len = p[0];
|
|
|
|
p++;
|
|
|
|
if (len == 0)
|
|
|
|
return -1;
|
|
|
|
flags = *p++;
|
|
|
|
len--;
|
|
|
|
if (!(flags & 0x10))
|
|
|
|
return -1;
|
|
|
|
if (len < 6)
|
|
|
|
return -1;
|
2007-07-06 09:32:34 +00:00
|
|
|
v = AV_RB32(p);
|
2003-10-29 14:16:31 +00:00
|
|
|
*ppcr_high = ((int64_t)v << 1) | (p[4] >> 7);
|
|
|
|
*ppcr_low = ((p[4] & 1) << 8) | p[5];
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-01-12 12:20:36 +00:00
|
|
|
static int mpegts_read_header(AVFormatContext *s)
|
2003-06-13 14:28:45 +00:00
|
|
|
{
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *pb = s->pb;
|
2009-02-03 11:01:57 +00:00
|
|
|
uint8_t buf[5*1024];
|
2007-06-04 14:20:07 +00:00
|
|
|
int len;
|
2003-06-13 14:28:45 +00:00
|
|
|
int64_t pos;
|
2004-05-31 16:57:00 +00:00
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
/* read the first 1024 bytes to get packet size */
|
2011-03-03 19:11:45 +00:00
|
|
|
pos = avio_tell(pb);
|
2011-02-21 15:43:01 +00:00
|
|
|
len = avio_read(pb, buf, sizeof(buf));
|
2003-06-13 14:28:45 +00:00
|
|
|
if (len != sizeof(buf))
|
|
|
|
goto fail;
|
|
|
|
ts->raw_packet_size = get_packet_size(buf, sizeof(buf));
|
|
|
|
if (ts->raw_packet_size <= 0)
|
|
|
|
goto fail;
|
2003-10-29 14:16:31 +00:00
|
|
|
ts->stream = s;
|
2003-06-13 14:28:45 +00:00
|
|
|
ts->auto_guess = 0;
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
if (s->iformat == &ff_mpegts_demuxer) {
|
2003-10-29 14:16:31 +00:00
|
|
|
/* normal demux */
|
2003-07-15 13:21:39 +00:00
|
|
|
|
2011-10-05 12:12:42 +00:00
|
|
|
/* first do a scan to get all the services */
|
2011-07-24 08:13:50 +00:00
|
|
|
if (pb->seekable && avio_seek(pb, pos, SEEK_SET) < 0)
|
2010-07-24 08:43:52 +00:00
|
|
|
av_log(s, AV_LOG_ERROR, "Unable to seek back to the start\n");
|
2009-04-12 09:04:12 +00:00
|
|
|
|
|
|
|
mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2009-04-12 08:52:16 +00:00
|
|
|
mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2009-10-18 20:11:32 +00:00
|
|
|
handle_packets(ts, s->probesize / ts->raw_packet_size);
|
2007-06-04 08:53:08 +00:00
|
|
|
/* if could not find service, enable auto_guess */
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2007-06-04 08:53:08 +00:00
|
|
|
ts->auto_guess = 1;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-01-29 16:46:18 +00:00
|
|
|
av_dlog(ts->stream, "tuning done\n");
|
2009-04-12 03:08:46 +00:00
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
s->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
} else {
|
|
|
|
AVStream *st;
|
|
|
|
int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
|
|
|
|
int64_t pcrs[2], pcr_h;
|
|
|
|
int packet_count[2];
|
|
|
|
uint8_t packet[TS_PACKET_SIZE];
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
/* only read packets */
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2011-06-18 09:43:24 +00:00
|
|
|
st = avformat_new_stream(s, NULL);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (!st)
|
|
|
|
goto fail;
|
2011-11-29 18:28:15 +00:00
|
|
|
avpriv_set_pts_info(st, 60, 1, 27000000);
|
2010-03-30 23:30:55 +00:00
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_DATA;
|
2005-07-17 22:24:36 +00:00
|
|
|
st->codec->codec_id = CODEC_ID_MPEG2TS;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
/* we iterate until we find two PCRs to estimate the bitrate */
|
|
|
|
pcr_pid = -1;
|
|
|
|
nb_pcrs = 0;
|
|
|
|
nb_packets = 0;
|
|
|
|
for(;;) {
|
2009-10-18 20:08:13 +00:00
|
|
|
ret = read_packet(s, packet, ts->raw_packet_size);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (ret < 0)
|
|
|
|
return -1;
|
2007-07-06 09:32:34 +00:00
|
|
|
pid = AV_RB16(packet + 1) & 0x1fff;
|
2003-10-29 14:16:31 +00:00
|
|
|
if ((pcr_pid == -1 || pcr_pid == pid) &&
|
|
|
|
parse_pcr(&pcr_h, &pcr_l, packet) == 0) {
|
|
|
|
pcr_pid = pid;
|
|
|
|
packet_count[nb_pcrs] = nb_packets;
|
|
|
|
pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
|
|
|
|
nb_pcrs++;
|
|
|
|
if (nb_pcrs >= 2)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
nb_packets++;
|
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
/* NOTE1: the bitrate is computed without the FEC */
|
|
|
|
/* NOTE2: it is only the bitrate of the start of the stream */
|
|
|
|
ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
|
|
|
|
ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0];
|
|
|
|
s->bit_rate = (TS_PACKET_SIZE * 8) * 27e6 / ts->pcr_incr;
|
2005-07-17 22:24:36 +00:00
|
|
|
st->codec->bit_rate = s->bit_rate;
|
2005-04-30 21:43:59 +00:00
|
|
|
st->start_time = ts->cur_pcr;
|
2011-06-02 18:40:09 +00:00
|
|
|
av_dlog(ts->stream, "start=%0.3f pcr=%0.3f incr=%d\n",
|
2011-04-29 15:27:01 +00:00
|
|
|
st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
|
2002-05-20 16:27:23 +00:00
|
|
|
}
|
2003-06-13 14:28:45 +00:00
|
|
|
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(pb, pos, SEEK_SET);
|
2002-05-20 16:27:23 +00:00
|
|
|
return 0;
|
2003-06-13 14:28:45 +00:00
|
|
|
fail:
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
#define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
|
|
|
|
|
|
|
|
static int mpegts_raw_read_packet(AVFormatContext *s,
|
|
|
|
AVPacket *pkt)
|
|
|
|
{
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
|
|
|
int ret, i;
|
|
|
|
int64_t pcr_h, next_pcr_h, pos;
|
|
|
|
int pcr_l, next_pcr_l;
|
|
|
|
uint8_t pcr_buf[12];
|
|
|
|
|
|
|
|
if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
|
2007-02-13 18:26:14 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2011-03-03 19:11:45 +00:00
|
|
|
pkt->pos= avio_tell(s->pb);
|
2009-10-18 20:08:13 +00:00
|
|
|
ret = read_packet(s, pkt->data, ts->raw_packet_size);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (ret < 0) {
|
|
|
|
av_free_packet(pkt);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
if (ts->mpeg2ts_compute_pcr) {
|
|
|
|
/* compute exact PCR for each packet */
|
|
|
|
if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
|
|
|
|
/* we read the next PCR (XXX: optimize it by using a bigger buffer */
|
2011-03-03 19:11:45 +00:00
|
|
|
pos = avio_tell(s->pb);
|
2003-10-29 14:16:31 +00:00
|
|
|
for(i = 0; i < MAX_PACKET_READAHEAD; i++) {
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_read(s->pb, pcr_buf, 12);
|
2003-10-29 14:16:31 +00:00
|
|
|
if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
|
|
|
|
/* XXX: not precise enough */
|
2005-12-17 18:14:38 +00:00
|
|
|
ts->pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
|
2003-10-29 14:16:31 +00:00
|
|
|
(i + 1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2003-10-29 14:16:31 +00:00
|
|
|
/* no next PCR found: we use previous increment */
|
|
|
|
ts->cur_pcr = pcr_h * 300 + pcr_l;
|
|
|
|
}
|
|
|
|
pkt->pts = ts->cur_pcr;
|
|
|
|
pkt->duration = ts->pcr_incr;
|
|
|
|
ts->cur_pcr += ts->pcr_incr;
|
|
|
|
}
|
|
|
|
pkt->stream_index = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2003-06-13 14:28:45 +00:00
|
|
|
static int mpegts_read_packet(AVFormatContext *s,
|
|
|
|
AVPacket *pkt)
|
|
|
|
{
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
2009-05-27 00:44:00 +00:00
|
|
|
int ret, i;
|
|
|
|
|
2007-06-02 20:57:31 +00:00
|
|
|
ts->pkt = pkt;
|
2009-05-27 00:44:00 +00:00
|
|
|
ret = handle_packets(ts, 0);
|
|
|
|
if (ret < 0) {
|
|
|
|
/* flush pes data left */
|
|
|
|
for (i = 0; i < NB_PID_MAX; i++) {
|
|
|
|
if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
|
|
|
|
PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
|
|
|
|
if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
|
|
|
|
new_pes_packet(pes, pkt);
|
2009-09-13 20:06:49 +00:00
|
|
|
pes->state = MPEGTS_SKIP;
|
2009-05-27 00:44:00 +00:00
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
2002-05-20 16:27:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int mpegts_read_close(AVFormatContext *s)
|
|
|
|
{
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
|
|
|
int i;
|
2008-04-24 22:16:00 +00:00
|
|
|
|
|
|
|
clear_programs(ts);
|
|
|
|
|
2002-05-20 16:27:23 +00:00
|
|
|
for(i=0;i<NB_PID_MAX;i++)
|
2004-01-08 19:01:16 +00:00
|
|
|
if (ts->pids[i]) mpegts_close_filter(ts, ts->pids[i]);
|
2006-04-01 18:19:00 +00:00
|
|
|
|
2002-05-20 16:27:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-12-17 18:14:38 +00:00
|
|
|
static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
|
2004-05-23 16:26:12 +00:00
|
|
|
int64_t *ppos, int64_t pos_limit)
|
2003-11-10 18:47:52 +00:00
|
|
|
{
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
|
|
|
int64_t pos, timestamp;
|
|
|
|
uint8_t buf[TS_PACKET_SIZE];
|
2007-06-08 17:21:29 +00:00
|
|
|
int pcr_l, pcr_pid = ((PESContext*)s->streams[stream_index]->priv_data)->pcr_pid;
|
2004-05-23 16:26:12 +00:00
|
|
|
const int find_next= 1;
|
2008-04-23 21:16:25 +00:00
|
|
|
pos = ((*ppos + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) * ts->raw_packet_size + ts->pos47;
|
2003-11-10 18:47:52 +00:00
|
|
|
if (find_next) {
|
|
|
|
for(;;) {
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
|
2003-11-10 18:47:52 +00:00
|
|
|
return AV_NOPTS_VALUE;
|
2007-07-06 09:32:34 +00:00
|
|
|
if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
|
2003-11-10 18:47:52 +00:00
|
|
|
parse_pcr(×tamp, &pcr_l, buf) == 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
pos += ts->raw_packet_size;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
for(;;) {
|
|
|
|
pos -= ts->raw_packet_size;
|
|
|
|
if (pos < 0)
|
|
|
|
return AV_NOPTS_VALUE;
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
|
2003-11-10 18:47:52 +00:00
|
|
|
return AV_NOPTS_VALUE;
|
2007-07-06 09:32:34 +00:00
|
|
|
if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
|
2003-11-10 18:47:52 +00:00
|
|
|
parse_pcr(×tamp, &pcr_l, buf) == 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
*ppos = pos;
|
|
|
|
|
2004-05-23 16:26:12 +00:00
|
|
|
return timestamp;
|
2003-11-10 18:47:52 +00:00
|
|
|
}
|
|
|
|
|
2009-09-06 15:59:32 +00:00
|
|
|
#ifdef USE_SYNCPOINT_SEARCH
|
|
|
|
|
2009-08-26 22:33:48 +00:00
|
|
|
static int read_seek2(AVFormatContext *s,
|
|
|
|
int stream_index,
|
|
|
|
int64_t min_ts,
|
|
|
|
int64_t target_ts,
|
|
|
|
int64_t max_ts,
|
|
|
|
int flags)
|
2009-08-22 16:07:50 +00:00
|
|
|
{
|
2004-05-31 16:57:00 +00:00
|
|
|
int64_t pos;
|
|
|
|
|
2009-08-22 16:07:50 +00:00
|
|
|
int64_t ts_ret, ts_adj;
|
|
|
|
int stream_index_gen_search;
|
|
|
|
AVStream *st;
|
|
|
|
AVParserState *backup;
|
2004-05-31 16:57:00 +00:00
|
|
|
|
2009-08-22 16:07:50 +00:00
|
|
|
backup = ff_store_parser_state(s);
|
2004-05-31 16:57:00 +00:00
|
|
|
|
2009-08-22 16:07:50 +00:00
|
|
|
// detect direction of seeking for search purposes
|
2009-08-26 22:33:48 +00:00
|
|
|
flags |= (target_ts - min_ts > (uint64_t)(max_ts - target_ts)) ?
|
|
|
|
AVSEEK_FLAG_BACKWARD : 0;
|
2009-08-22 16:07:50 +00:00
|
|
|
|
|
|
|
if (flags & AVSEEK_FLAG_BYTE) {
|
2009-08-26 22:33:48 +00:00
|
|
|
// use position directly, we will search starting from it
|
2009-08-22 16:07:50 +00:00
|
|
|
pos = target_ts;
|
|
|
|
} else {
|
2009-08-26 22:33:48 +00:00
|
|
|
// search for some position with good timestamp match
|
|
|
|
if (stream_index < 0) {
|
2009-08-22 16:07:50 +00:00
|
|
|
stream_index_gen_search = av_find_default_stream_index(s);
|
|
|
|
if (stream_index_gen_search < 0) {
|
|
|
|
ff_restore_parser_state(s, backup);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
st = s->streams[stream_index_gen_search];
|
2009-08-26 22:33:48 +00:00
|
|
|
// timestamp for default must be expressed in AV_TIME_BASE units
|
|
|
|
ts_adj = av_rescale(target_ts,
|
|
|
|
st->time_base.den,
|
|
|
|
AV_TIME_BASE * (int64_t)st->time_base.num);
|
2009-08-22 16:07:50 +00:00
|
|
|
} else {
|
|
|
|
ts_adj = target_ts;
|
|
|
|
stream_index_gen_search = stream_index;
|
|
|
|
}
|
2011-10-16 13:03:30 +00:00
|
|
|
pos = ff_gen_search(s, stream_index_gen_search, ts_adj,
|
2009-08-22 16:07:50 +00:00
|
|
|
0, INT64_MAX, -1,
|
|
|
|
AV_NOPTS_VALUE,
|
|
|
|
AV_NOPTS_VALUE,
|
|
|
|
flags, &ts_ret, mpegts_get_pcr);
|
|
|
|
if (pos < 0) {
|
|
|
|
ff_restore_parser_state(s, backup);
|
2004-05-31 16:57:00 +00:00
|
|
|
return -1;
|
2009-08-22 16:07:50 +00:00
|
|
|
}
|
2005-12-17 18:14:38 +00:00
|
|
|
}
|
2004-05-31 16:57:00 +00:00
|
|
|
|
2009-08-26 22:33:48 +00:00
|
|
|
// search for actual matching keyframe/starting position for all streams
|
|
|
|
if (ff_gen_syncpoint_search(s, stream_index, pos,
|
|
|
|
min_ts, target_ts, max_ts,
|
|
|
|
flags) < 0) {
|
2009-08-22 16:07:50 +00:00
|
|
|
ff_restore_parser_state(s, backup);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
ff_free_parser_state(s, backup);
|
2004-05-31 16:57:00 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-08-22 16:07:50 +00:00
|
|
|
static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
if (flags & AVSEEK_FLAG_BACKWARD) {
|
2009-08-26 22:33:48 +00:00
|
|
|
flags &= ~AVSEEK_FLAG_BACKWARD;
|
|
|
|
ret = read_seek2(s, stream_index, INT64_MIN, target_ts, target_ts, flags);
|
|
|
|
if (ret < 0)
|
|
|
|
// for compatibility reasons, seek to the best-fitting timestamp
|
|
|
|
ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
|
2009-08-22 16:07:50 +00:00
|
|
|
} else {
|
|
|
|
ret = read_seek2(s, stream_index, target_ts, target_ts, INT64_MAX, flags);
|
2009-08-26 22:33:48 +00:00
|
|
|
if (ret < 0)
|
|
|
|
// for compatibility reasons, seek to the best-fitting timestamp
|
2009-08-22 16:07:50 +00:00
|
|
|
ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-09-06 15:59:32 +00:00
|
|
|
#else
|
|
|
|
|
|
|
|
static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
|
|
|
|
MpegTSContext *ts = s->priv_data;
|
|
|
|
uint8_t buf[TS_PACKET_SIZE];
|
|
|
|
int64_t pos;
|
|
|
|
|
2011-10-16 13:03:30 +00:00
|
|
|
if (ff_seek_frame_binary(s, stream_index, target_ts, flags) < 0)
|
2009-09-06 15:59:32 +00:00
|
|
|
return -1;
|
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
pos= avio_tell(s->pb);
|
2009-09-06 15:59:32 +00:00
|
|
|
|
|
|
|
for(;;) {
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2011-02-21 15:43:01 +00:00
|
|
|
if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
|
2009-09-06 15:59:32 +00:00
|
|
|
return -1;
|
|
|
|
// pid = AV_RB16(buf + 1) & 0x1fff;
|
|
|
|
if(buf[1] & 0x40) break;
|
|
|
|
pos += ts->raw_packet_size;
|
|
|
|
}
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, pos, SEEK_SET);
|
2009-09-06 15:59:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
/**************************************************************/
|
|
|
|
/* parsing functions - called from other demuxers such as RTP */
|
|
|
|
|
2010-02-01 23:10:04 +00:00
|
|
|
MpegTSContext *ff_mpegts_parse_open(AVFormatContext *s)
|
2003-10-29 14:16:31 +00:00
|
|
|
{
|
|
|
|
MpegTSContext *ts;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2003-10-29 14:16:31 +00:00
|
|
|
ts = av_mallocz(sizeof(MpegTSContext));
|
|
|
|
if (!ts)
|
|
|
|
return NULL;
|
|
|
|
/* no stream case, currently used by RTP */
|
|
|
|
ts->raw_packet_size = TS_PACKET_SIZE;
|
|
|
|
ts->stream = s;
|
|
|
|
ts->auto_guess = 1;
|
|
|
|
return ts;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* return the consumed length if a packet was output, or -1 if no
|
|
|
|
packet is output */
|
2010-02-01 23:10:04 +00:00
|
|
|
int ff_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
|
2003-10-29 14:16:31 +00:00
|
|
|
const uint8_t *buf, int len)
|
|
|
|
{
|
|
|
|
int len1;
|
|
|
|
|
|
|
|
len1 = len;
|
|
|
|
ts->pkt = pkt;
|
|
|
|
ts->stop_parse = 0;
|
|
|
|
for(;;) {
|
2007-06-04 14:17:43 +00:00
|
|
|
if (ts->stop_parse>0)
|
2003-10-29 14:16:31 +00:00
|
|
|
break;
|
|
|
|
if (len < TS_PACKET_SIZE)
|
|
|
|
return -1;
|
|
|
|
if (buf[0] != 0x47) {
|
2004-04-13 13:33:02 +00:00
|
|
|
buf++;
|
2003-10-29 14:16:31 +00:00
|
|
|
len--;
|
|
|
|
} else {
|
|
|
|
handle_packet(ts, buf);
|
|
|
|
buf += TS_PACKET_SIZE;
|
|
|
|
len -= TS_PACKET_SIZE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return len1 - len;
|
|
|
|
}
|
|
|
|
|
2010-02-01 23:10:04 +00:00
|
|
|
void ff_mpegts_parse_close(MpegTSContext *ts)
|
2003-10-29 14:16:31 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for(i=0;i<NB_PID_MAX;i++)
|
|
|
|
av_free(ts->pids[i]);
|
|
|
|
av_free(ts);
|
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_mpegts_demuxer = {
|
2011-07-16 20:18:12 +00:00
|
|
|
.name = "mpegts",
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
|
|
|
|
.priv_data_size = sizeof(MpegTSContext),
|
|
|
|
.read_probe = mpegts_probe,
|
|
|
|
.read_header = mpegts_read_header,
|
|
|
|
.read_packet = mpegts_read_packet,
|
|
|
|
.read_close = mpegts_read_close,
|
|
|
|
.read_seek = read_seek,
|
|
|
|
.read_timestamp = mpegts_get_pcr,
|
2008-08-15 16:13:05 +00:00
|
|
|
.flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
|
2009-09-06 15:59:32 +00:00
|
|
|
#ifdef USE_SYNCPOINT_SEARCH
|
2009-08-22 16:07:50 +00:00
|
|
|
.read_seek2 = read_seek2,
|
2009-09-06 15:59:32 +00:00
|
|
|
#endif
|
2002-05-20 16:27:23 +00:00
|
|
|
};
|
2007-06-02 20:57:31 +00:00
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_mpegtsraw_demuxer = {
|
2011-07-16 20:18:12 +00:00
|
|
|
.name = "mpegtsraw",
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 raw transport stream format"),
|
|
|
|
.priv_data_size = sizeof(MpegTSContext),
|
|
|
|
.read_header = mpegts_read_header,
|
|
|
|
.read_packet = mpegts_raw_read_packet,
|
|
|
|
.read_close = mpegts_read_close,
|
|
|
|
.read_seek = read_seek,
|
|
|
|
.read_timestamp = mpegts_get_pcr,
|
2008-08-15 16:13:05 +00:00
|
|
|
.flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
|
2009-09-06 15:59:32 +00:00
|
|
|
#ifdef USE_SYNCPOINT_SEARCH
|
2009-08-22 16:07:50 +00:00
|
|
|
.read_seek2 = read_seek2,
|
2009-09-06 15:59:32 +00:00
|
|
|
#endif
|
2011-04-30 11:42:55 +00:00
|
|
|
.priv_class = &mpegtsraw_class,
|
2007-06-02 20:57:31 +00:00
|
|
|
};
|