mirror of
https://github.com/mpv-player/mpv
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ce8cc48c25
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12050 b3059339-0415-0410-9bf9-f77b7e298cf2
2167 lines
48 KiB
C
2167 lines
48 KiB
C
/*
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* Demultiplexer for MPEG2 Transport Streams.
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*
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* Written by Nico <nsabbi@libero.it>
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* Kind feedback is appreciated; 'sucks' and alike is not.
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* Originally based on demux_pva.c written by Matteo Giani and FFmpeg (libavformat) sources
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*
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* This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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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.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "parse_es.h"
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#include "stheader.h"
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#include "bswap.h"
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#include "../unrarlib.h"
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#define TS_FEC_PACKET_SIZE 204
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#define TS_PACKET_SIZE 188
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#define NB_PID_MAX 8192
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#define MAX_HEADER_SIZE 6 /* enough for PES header + length */
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#define MAX_CHECK_SIZE 65535
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#define TS_MAX_PROBE_SIZE 2000000 /* dont forget to change this in cfg-common.h too */
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#define NUM_CONSECUTIVE_TS_PACKETS 32
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#define NUM_CONSECUTIVE_AUDIO_PACKETS 348
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int ts_prog;
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int ts_keep_broken=0;
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off_t ts_probe = TS_MAX_PROBE_SIZE;
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extern char *dvdsub_lang, *audio_lang; //for -alang
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typedef enum
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{
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UNKNOWN = -1,
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VIDEO_MPEG1 = 0x10000001,
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VIDEO_MPEG2 = 0x10000002,
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VIDEO_MPEG4 = 0x10000004,
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AUDIO_MP2 = 0x50,
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AUDIO_A52 = 0x2000,
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AUDIO_LPCM_BE = 0x10001,
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AUDIO_AAC = mmioFOURCC('M', 'P', '4', 'A'),
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SPU_DVD = 0x3000000,
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SPU_DVB = 0x3000001
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} es_stream_type_t;
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typedef struct {
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int size;
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unsigned char *start;
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uint16_t payload_size;
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es_stream_type_t type;
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float pts, last_pts;
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int pid;
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char lang[4];
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int last_cc; // last cc code (-1 if first packet)
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uint64_t seen;
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} ES_stream_t;
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typedef struct MpegTSContext {
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int packet_size; // raw packet size, including FEC if present e.g. 188 bytes
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ES_stream_t *pids[NB_PID_MAX];
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} MpegTSContext;
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typedef struct {
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demux_stream_t *ds;
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demux_packet_t *pack;
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int offset, buffer_size;
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int broken; //set if it's the final part of a chunk (doesn't have a corresponding is_start)
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} av_fifo_t;
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typedef struct {
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uint8_t skip;
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uint8_t table_id;
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uint8_t ssi;
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uint16_t section_length;
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uint16_t ts_id;
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uint8_t version_number;
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uint8_t curr_next;
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uint8_t section_number;
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uint8_t last_section_number;
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struct pat_progs_t {
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uint16_t id;
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uint16_t pmt_pid;
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} *progs;
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uint16_t progs_cnt;
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char buffer[65535];
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uint16_t buffer_len;
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} pat_t;
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typedef struct {
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uint16_t progid;
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uint8_t skip;
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uint8_t table_id;
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uint8_t ssi;
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uint16_t section_length;
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uint8_t version_number;
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uint8_t curr_next;
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uint8_t section_number;
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uint8_t last_section_number;
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uint16_t PCR_PID;
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uint16_t prog_descr_length;
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char buffer[2048];
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uint16_t buffer_len;
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uint16_t es_cnt;
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struct pmt_es_t {
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uint16_t pid;
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uint32_t type; //it's 8 bit long, but cast to the right type as FOURCC
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uint16_t descr_length;
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uint8_t format_descriptor[5];
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uint8_t lang[4];
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} *es;
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} pmt_t;
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typedef struct {
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MpegTSContext ts;
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int last_pid;
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av_fifo_t fifo[3]; //0 for audio, 1 for video, 2 for subs
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pat_t pat;
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pmt_t *pmt;
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uint16_t pmt_cnt;
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uint32_t prog;
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int keep_broken;
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} ts_priv_t;
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static int ts_parse(demuxer_t *demuxer, ES_stream_t *es, unsigned char *packet, int probe);
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extern void resync_audio_stream( sh_audio_t *sh_audio );
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static uint8_t get_packet_size(const unsigned char *buf, int size)
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{
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int i;
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if (size < (TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS))
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return 0;
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for(i=0; i<NUM_CONSECUTIVE_TS_PACKETS; i++)
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{
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if (buf[i * TS_PACKET_SIZE] != 0x47)
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{
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mp_msg(MSGT_DEMUX, MSGL_DBG2, "GET_PACKET_SIZE, pos %d, char: %2x\n", i, buf[i * TS_PACKET_SIZE]);
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goto try_fec;
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}
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}
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return TS_PACKET_SIZE;
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try_fec:
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for(i=0; i<NUM_CONSECUTIVE_TS_PACKETS; i++)
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{
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if (buf[i * TS_FEC_PACKET_SIZE] != 0x47)
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return 0;
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}
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return TS_FEC_PACKET_SIZE;
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}
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int ts_check_file(demuxer_t * demuxer)
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{
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const int buf_size = (TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS);
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unsigned char buf[TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS], done = 0, *ptr;
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uint32_t _read, i, count = 0, is_ts;
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int cc[NB_PID_MAX], last_cc[NB_PID_MAX], pid, cc_ok, c, good, bad;
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uint8_t size = 0;
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off_t pos = 0;
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off_t init_pos;
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mp_msg(MSGT_DEMUX, MSGL_V, "Checking for MPEG-TS...\n");
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init_pos = stream_tell(demuxer->stream);
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is_ts = 0;
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while(! done)
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{
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i = 1;
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c = 0;
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while(((c=stream_read_char(demuxer->stream)) != 0x47)
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&& (c >= 0)
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&& (i < MAX_CHECK_SIZE)
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&& ! demuxer->stream->eof
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) i++;
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if(c != 0x47)
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{
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mp_msg(MSGT_DEMUX, MSGL_V, "THIS DOESN'T LOOK LIKE AN MPEG-TS FILE!\n");
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is_ts = 0;
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done = 1;
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continue;
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}
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pos = stream_tell(demuxer->stream) - 1;
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buf[0] = c;
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_read = stream_read(demuxer->stream, &buf[1], buf_size-1);
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if(_read < buf_size-1)
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{
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mp_msg(MSGT_DEMUX, MSGL_V, "COULDN'T READ ENOUGH DATA, EXITING TS_CHECK\n");
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stream_reset(demuxer->stream);
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return 0;
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}
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size = get_packet_size(buf, buf_size);
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if(size)
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{
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done = 1;
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is_ts = 1;
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}
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if(pos - init_pos >= MAX_CHECK_SIZE)
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{
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done = 1;
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is_ts = 0;
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}
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}
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mp_msg(MSGT_DEMUX, MSGL_V, "TRIED UP TO POSITION %llu, FOUND %x, packet_size= %d, SEEMS A TS? %d\n", (uint64_t) pos, c, size, is_ts);
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stream_seek(demuxer->stream, pos);
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if(! is_ts)
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return 0;
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//LET'S CHECK continuity counters
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good = bad = 0;
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for(count = 0; count < NB_PID_MAX; count++)
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{
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cc[count] = last_cc[count] = -1;
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}
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for(count = 0; count < NUM_CONSECUTIVE_TS_PACKETS; count++)
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{
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ptr = &(buf[size * count]);
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pid = ((ptr[1] & 0x1f) << 8) | ptr[2];
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mp_msg(MSGT_DEMUX, MSGL_DBG2, "BUF: %02x %02x %02x %02x, PID %d, SIZE: %d \n",
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ptr[0], ptr[1], ptr[2], ptr[3], pid, size);
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if((pid == 8191) || (pid < 16))
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continue;
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cc[pid] = (ptr[3] & 0xf);
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cc_ok = (last_cc[pid] < 0) || ((((last_cc[pid] + 1) & 0x0f) == cc[pid]));
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mp_msg(MSGT_DEMUX, MSGL_DBG2, "PID %d, COMPARE CC %d AND LAST_CC %d\n", pid, cc[pid], last_cc[pid]);
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if(! cc_ok)
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//return 0;
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bad++;
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else
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good++;
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last_cc[pid] = cc[pid];
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}
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mp_msg(MSGT_DEMUX, MSGL_V, "GOOD CC: %d, BAD CC: %d\n", good, bad);
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if(good >= bad)
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return size;
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else
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return 0;
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}
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static inline int32_t progid_idx_in_pmt(ts_priv_t *priv, uint16_t progid)
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{
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int x;
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if(priv->pmt == NULL)
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return -1;
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for(x = 0; x < priv->pmt_cnt; x++)
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{
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if(priv->pmt[x].progid == progid)
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return x;
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}
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return -1;
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}
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static inline int32_t progid_for_pid(ts_priv_t *priv, int pid, int32_t req) //finds the first program listing a pid
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{
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int i, j;
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pmt_t *pmt;
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if(priv->pmt == NULL)
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return -1;
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for(i=0; i < priv->pmt_cnt; i++)
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{
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pmt = &(priv->pmt[i]);
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if(pmt->es == NULL)
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return -1;
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for(j = 0; j < pmt->es_cnt; j++)
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{
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if(pmt->es[j].pid == pid)
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{
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if((req == 0) || (req == pmt->progid))
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return pmt->progid;
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}
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}
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}
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return -1;
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}
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static inline int pid_match_lang(ts_priv_t *priv, uint16_t pid, char *lang)
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{
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uint16_t i, j;
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pmt_t *pmt;
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if(priv->pmt == NULL)
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return -1;
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for(i=0; i < priv->pmt_cnt; i++)
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{
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pmt = &(priv->pmt[i]);
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if(pmt->es == NULL)
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return -1;
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for(j = 0; j < pmt->es_cnt; j++)
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{
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if(pmt->es[j].pid != pid)
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continue;
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mp_msg(MSGT_DEMUXER, MSGL_V, "CMP LANG %s AND %s, pids: %d %d\n",pmt->es[j].lang, lang, pmt->es[j].pid, pid);
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if(strncmp(pmt->es[j].lang, lang, 3) == 0)
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{
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return 1;
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}
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}
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}
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return -1;
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}
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typedef struct {
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int32_t atype, vtype, stype; //types
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int32_t apid, vpid, spid; //stream ids
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char slang[4], alang[4]; //languages
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int16_t prog;
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off_t probe;
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} tsdemux_init_t;
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static off_t ts_detect_streams(demuxer_t *demuxer, tsdemux_init_t *param)
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{
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int video_found = 0, audio_found = 0, sub_found = 0, i, num_packets = 0, req_apid, req_vpid, req_spid;
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int is_audio, is_video, is_sub, has_tables;
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int32_t p, chosen_pid = 0;
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off_t pos=0, ret = 0, init_pos;
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ES_stream_t es;
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unsigned char tmp[TS_FEC_PACKET_SIZE];
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ts_priv_t *priv = (ts_priv_t*) demuxer->priv;
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priv->last_pid = 8192; //invalid pid
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req_apid = param->apid;
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req_vpid = param->vpid;
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req_spid = param->spid;
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has_tables = 0;
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init_pos = stream_tell(demuxer->stream);
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mp_msg(MSGT_DEMUXER, MSGL_INFO, "PROBING UP TO %llu, PROG: %d\n", (uint64_t) param->probe, param->prog);
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while((pos <= init_pos + param->probe) && (! demuxer->stream->eof))
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{
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pos = stream_tell(demuxer->stream);
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if(ts_parse(demuxer, &es, tmp, 1))
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{
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is_audio = ((es.type == AUDIO_MP2) || (es.type == AUDIO_A52) || (es.type == AUDIO_LPCM_BE) || (es.type == AUDIO_AAC));
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is_video = ((es.type == VIDEO_MPEG1) || (es.type == VIDEO_MPEG2) || (es.type == VIDEO_MPEG4));
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is_sub = ((es.type == SPU_DVD) || (es.type == SPU_DVB));
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if((! is_audio) && (! is_video) && (! is_sub))
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continue;
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if(is_video)
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{
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chosen_pid = (req_vpid == es.pid);
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if((! chosen_pid) && (req_vpid > 0))
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continue;
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}
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else if(is_audio)
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{
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if(req_apid > 0)
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{
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chosen_pid = (req_apid == es.pid);
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if(! chosen_pid)
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continue;
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}
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else if(param->alang[0] > 0)
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{
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if(pid_match_lang(priv, es.pid, param->alang) == -1)
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continue;
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chosen_pid = 1;
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param->apid = req_apid = es.pid;
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}
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}
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else if(is_sub)
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{
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chosen_pid = (req_spid == es.pid);
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if((! chosen_pid) && (req_spid > 0))
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continue;
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}
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if(req_apid < 0 && (param->alang[0] == 0) && req_vpid < 0 && req_spid < 0)
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chosen_pid = 1;
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if((ret == 0) && chosen_pid)
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{
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ret = stream_tell(demuxer->stream);
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}
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p = progid_for_pid(priv, es.pid, param->prog);
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if(p != -1)
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has_tables++;
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if((param->prog == 0) && (p != -1))
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{
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if(chosen_pid)
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param->prog = p;
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}
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if((param->prog > 0) && (param->prog != p))
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{
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if(audio_found)
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{
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if(is_video && (req_vpid == es.pid))
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{
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param->vtype = es.type;
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param->vpid = es.pid;
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video_found = 1;
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break;
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}
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}
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if(video_found)
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{
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if(is_audio && (req_apid == es.pid))
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{
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param->atype = es.type;
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param->apid = es.pid;
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audio_found = 1;
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break;
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}
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}
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|
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continue;
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}
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mp_msg(MSGT_DEMUXER, MSGL_DBG2, "TYPE: %x, PID: %d, PROG FOUND: %d\n", es.type, es.pid, param->prog);
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|
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if(is_video)
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{
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if((req_vpid == -1) || (req_vpid == es.pid))
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{
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param->vtype = es.type;
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param->vpid = es.pid;
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video_found = 1;
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}
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}
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|
|
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if(((req_vpid == -2) || (num_packets >= NUM_CONSECUTIVE_AUDIO_PACKETS)) && audio_found)
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{
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|
//novideo or we have at least 348 audio packets (64 KB) without video (TS with audio only)
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param->vtype = 0;
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break;
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}
|
|
|
|
if(is_sub)
|
|
{
|
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if((req_spid == -1) || (req_spid == es.pid))
|
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{
|
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param->stype = es.type;
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param->spid = es.pid;
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sub_found = 1;
|
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}
|
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}
|
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|
|
if(is_audio)
|
|
{
|
|
if((req_apid == -1) || (req_apid == es.pid))
|
|
{
|
|
param->atype = es.type;
|
|
param->apid = es.pid;
|
|
audio_found = 1;
|
|
}
|
|
}
|
|
|
|
if(audio_found && (param->apid == es.pid) && (! video_found))
|
|
num_packets++;
|
|
|
|
if((req_apid == -2) && video_found)
|
|
{
|
|
param->atype = 0;
|
|
break;
|
|
}
|
|
|
|
if((has_tables==0) && (video_found && audio_found) && (pos >= 1000000))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(video_found)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO MPEG%d(pid=%d)...", (param->vtype == VIDEO_MPEG1 ? 1 : (param->vtype == VIDEO_MPEG2 ? 2 : 4)), param->vpid);
|
|
else
|
|
{
|
|
video_found = 0;
|
|
param->vtype = UNKNOWN;
|
|
//WE DIDN'T MATCH ANY VIDEO STREAM
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "NO VIDEO! ");
|
|
}
|
|
|
|
if(param->atype == AUDIO_MP2)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO MP2(pid=%d)", param->apid);
|
|
else if(param->atype == AUDIO_A52)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO A52(pid=%d)", param->apid);
|
|
else if(param->atype == AUDIO_LPCM_BE)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO LPCM(pid=%d)", param->apid);
|
|
else if(param->atype == AUDIO_AAC)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO AAC(pid=%d)", param->apid);
|
|
else
|
|
{
|
|
audio_found = 0;
|
|
param->atype = UNKNOWN;
|
|
//WE DIDN'T MATCH ANY AUDIO STREAM, SO WE FORCE THE DEMUXER TO IGNORE AUDIO
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "NO AUDIO! ");
|
|
}
|
|
|
|
if(param->stype == SPU_DVD || param->stype == SPU_DVB)
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, " SUB DVx(pid=%d) ", param->spid);
|
|
else
|
|
{
|
|
param->stype = UNKNOWN;
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, " NO SUBS (yet)! ");
|
|
}
|
|
|
|
if(video_found || audio_found)
|
|
{
|
|
if(demuxer->stream->eof && (ret == 0))
|
|
ret = init_pos;
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, " PROGRAM N. %d\n", param->prog);
|
|
}
|
|
else
|
|
mp_msg(MSGT_DEMUXER, MSGL_INFO, "\n");
|
|
|
|
|
|
for(i=0; i<8192; i++)
|
|
{
|
|
if(priv->ts.pids[i] != NULL)
|
|
{
|
|
priv->ts.pids[i]->payload_size = 0;
|
|
priv->ts.pids[i]->pts = priv->ts.pids[i]->last_pts = 0;
|
|
priv->ts.pids[i]->seen = 0;
|
|
priv->ts.pids[i]->last_cc = -1;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
demuxer_t *demux_open_ts(demuxer_t * demuxer)
|
|
{
|
|
int i;
|
|
uint8_t packet_size;
|
|
sh_video_t *sh_video;
|
|
sh_audio_t *sh_audio;
|
|
off_t start_pos;
|
|
tsdemux_init_t params;
|
|
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_INFO, "DEMUX OPEN, AUDIO_ID: %d, VIDEO_ID: %d, SUBTITLE_ID: %d,\n",
|
|
demuxer->audio->id, demuxer->video->id, demuxer->sub->id);
|
|
|
|
|
|
demuxer->type= DEMUXER_TYPE_MPEG_TS;
|
|
|
|
|
|
stream_reset(demuxer->stream);
|
|
|
|
packet_size = ts_check_file(demuxer);
|
|
if(!packet_size)
|
|
return NULL;
|
|
|
|
priv = malloc(sizeof(ts_priv_t));
|
|
if(priv == NULL)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_FATAL, "DEMUX_OPEN_TS, couldn't allocate enough memory for ts->priv, exit\n");
|
|
return NULL;
|
|
}
|
|
|
|
for(i=0; i < 8192; i++)
|
|
priv->ts.pids[i] = NULL;
|
|
priv->pat.progs = NULL;
|
|
priv->pat.progs_cnt = 0;
|
|
|
|
priv->pmt = NULL;
|
|
priv->pmt_cnt = 0;
|
|
|
|
priv->keep_broken = ts_keep_broken;
|
|
priv->ts.packet_size = packet_size;
|
|
|
|
|
|
demuxer->priv = priv;
|
|
if(demuxer->stream->type != STREAMTYPE_FILE)
|
|
demuxer->seekable = 1;
|
|
else
|
|
demuxer->seekable = 1;
|
|
|
|
|
|
params.atype = params.vtype = params.stype = UNKNOWN;
|
|
params.apid = demuxer->audio->id;
|
|
params.vpid = demuxer->video->id;
|
|
params.spid = demuxer->sub->id;
|
|
params.prog = ts_prog;
|
|
params.probe = ts_probe;
|
|
|
|
if(dvdsub_lang != NULL)
|
|
{
|
|
strncpy(params.slang, dvdsub_lang, 3);
|
|
params.slang[3] = 0;
|
|
}
|
|
else
|
|
memset(params.slang, 0, 4);
|
|
|
|
if(audio_lang != NULL)
|
|
{
|
|
strncpy(params.alang, audio_lang, 3);
|
|
params.alang[3] = 0;
|
|
}
|
|
else
|
|
memset(params.alang, 0, 4);
|
|
|
|
start_pos = ts_detect_streams(demuxer, ¶ms);
|
|
|
|
demuxer->audio->id = params.apid;
|
|
demuxer->video->id = params.vpid;
|
|
demuxer->sub->id = params.spid;
|
|
priv->prog = params.prog;
|
|
|
|
|
|
if(params.vtype != UNKNOWN)
|
|
{
|
|
if(params.vtype == VIDEO_MPEG4)
|
|
demuxer->file_format= DEMUXER_TYPE_MPEG4_IN_TS;
|
|
|
|
sh_video = new_sh_video(demuxer, 0);
|
|
sh_video->ds = demuxer->video;
|
|
sh_video->format = params.vtype;
|
|
demuxer->video->sh = sh_video;
|
|
}
|
|
|
|
if(params.atype != UNKNOWN)
|
|
{
|
|
sh_audio = new_sh_audio(demuxer, 0);
|
|
sh_audio->ds = demuxer->audio;
|
|
sh_audio->format = params.atype;
|
|
demuxer->audio->sh = sh_audio;
|
|
}
|
|
|
|
|
|
mp_msg(MSGT_DEMUXER,MSGL_INFO, "Opened TS demuxer, audio: %x(pid %d), video: %x(pid %d)...POS=%llu\n", params.atype, demuxer->audio->id, params.vtype, demuxer->video->id, (uint64_t) start_pos);
|
|
|
|
|
|
start_pos = (start_pos <= priv->ts.packet_size ? 0 : start_pos - priv->ts.packet_size);
|
|
demuxer->movi_start = start_pos;
|
|
stream_reset(demuxer->stream);
|
|
stream_seek(demuxer->stream, start_pos); //IF IT'S FROM A PIPE IT WILL FAIL, BUT WHO CARES?
|
|
|
|
|
|
priv->last_pid = 8192; //invalid pid
|
|
|
|
for(i = 0; i < 3; i++)
|
|
{
|
|
priv->fifo[i].pack = NULL;
|
|
priv->fifo[i].offset = 0;
|
|
priv->fifo[i].broken = 1;
|
|
}
|
|
priv->fifo[0].ds = demuxer->audio;
|
|
priv->fifo[1].ds = demuxer->video;
|
|
priv->fifo[2].ds = demuxer->sub;
|
|
|
|
priv->fifo[0].buffer_size = 1536;
|
|
priv->fifo[1].buffer_size = 32767;
|
|
priv->fifo[2].buffer_size = 32767;
|
|
|
|
priv->pat.buffer_len = 0;
|
|
|
|
demuxer->filepos = stream_tell(demuxer->stream);
|
|
return demuxer;
|
|
}
|
|
|
|
void demux_close_ts(demuxer_t * demuxer)
|
|
{
|
|
if(demuxer->priv)
|
|
{
|
|
free(demuxer->priv);
|
|
demuxer->priv=NULL;
|
|
}
|
|
}
|
|
|
|
static int pes_parse2(unsigned char *buf, uint16_t packet_len, ES_stream_t *es, int32_t type_from_pmt)
|
|
{
|
|
unsigned char *p;
|
|
uint32_t header_len;
|
|
int64_t pts;
|
|
uint32_t stream_id;
|
|
uint32_t pkt_len;
|
|
|
|
//THE FOLLOWING CODE might be needed in the future:
|
|
//uint8_t es_rate_flag, escr_flag, pts_flag;
|
|
//int64_t escr, dts;
|
|
//uint32_t es_rate;
|
|
|
|
//Here we are always at the start of a PES packet
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2(%p, %d): \n", buf, (uint32_t) packet_len);
|
|
|
|
if(packet_len == 0)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2(,PACKET_LEN = 0, EXIT\n");
|
|
return 0;
|
|
}
|
|
|
|
if(packet_len > 184)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2, BUFFER LEN IS TOO BIG: %d, EXIT\n", packet_len);
|
|
return 0;
|
|
}
|
|
|
|
|
|
p = buf;
|
|
pkt_len = packet_len;
|
|
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: HEADER %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3]);
|
|
if (p[0] || p[1] || (p[2] != 1))
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: error HEADER %02x %02x %02x (should be 0x000001) \n", p[0], p[1], p[2]);
|
|
return 0 ;
|
|
}
|
|
|
|
packet_len -= 6;
|
|
if(packet_len==0)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: packet too short: %d, exit\n", packet_len);
|
|
return 0;
|
|
}
|
|
|
|
es->payload_size = (p[4] << 8 | p[5]);
|
|
|
|
stream_id = p[3];
|
|
|
|
|
|
if (p[7] & 0x80)
|
|
{ /* pts available */
|
|
pts = (int64_t)(p[9] & 0x0E) << 29 ;
|
|
pts |= p[10] << 22 ;
|
|
pts |= (p[11] & 0xFE) << 14 ;
|
|
pts |= p[12] << 7 ;
|
|
pts |= (p[13] & 0xFE) >> 1 ;
|
|
|
|
es->pts = pts / 90000.0f;
|
|
}
|
|
else
|
|
es->pts = 0.0f;
|
|
|
|
/*
|
|
CODE TO CALCULATE ES_RATE AND ESCR, ACTUALLY UNUSED BUT POSSIBLY NEEDED IN THE FUTURE
|
|
|
|
pts_flag = ((p[7] & 0xc0) >> 6) & 3;
|
|
escr_flag = p[7] & 0x20;
|
|
es_rate_flag = p[7] & 0x10;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "pes_parse: ES_RATE_FLAG=%d, ESCR_FLAG=%d, PTS_FLAG=%d, byte=%02X\n", es_rate_flag, escr_flag, pts_flag, p[7]);
|
|
|
|
|
|
if(es_rate_flag)
|
|
{
|
|
char *base;
|
|
int bytes = 0;
|
|
|
|
if(pts_flag == 2)
|
|
bytes += 5;
|
|
else if(pts_flag == 3)
|
|
bytes += 10;
|
|
|
|
if(escr_flag)
|
|
bytes += 6;
|
|
|
|
base = p[8+bytes];
|
|
es_rate = ((base[0] & 0x7f) << 8) | (base[1] << 8) | (base[0] & 0xfe);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "demux_ts: ES_RATE=%d)\n", es_rate*50);
|
|
}
|
|
*/
|
|
|
|
header_len = p[8];
|
|
|
|
|
|
if (header_len + 9 > pkt_len) //9 are the bytes read up to the header_length field
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "demux_ts: illegal value for PES_header_data_length (0x%02x)\n", header_len);
|
|
return 0;
|
|
}
|
|
|
|
p += header_len + 9;
|
|
packet_len -= header_len + 3;
|
|
|
|
/*
|
|
if(packet_len <= 0)
|
|
mp_msg(MSGT_DEMUX, MSGL_INFO, "\n\nNow: %d, prima: %d, ORIG: %d\n\n\n", packet_len, packet_len+3+header_len, pkt_len);
|
|
*/
|
|
|
|
if(es->payload_size)
|
|
es->payload_size -= header_len + 3;
|
|
|
|
|
|
if (stream_id == 0xbd)
|
|
{
|
|
int track; //, spu_id;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG3, "pes_parse2: audio buf = %02X %02X %02X %02X %02X %02X %02X %02X, 80: %d\n",
|
|
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[0] & 0x80);
|
|
|
|
track = p[0] & 0x0F;
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "A52 TRACK: %d\n", track);
|
|
|
|
|
|
/*
|
|
* we check the descriptor tag first because some stations
|
|
* do not include any of the A52 header info in their audio tracks
|
|
* these "raw" streams may begin with a byte that looks like a stream type.
|
|
*/
|
|
|
|
|
|
if(
|
|
(type_from_pmt == AUDIO_A52) || /* A52 - raw */
|
|
(p[0] == 0x0B && p[1] == 0x77) /* A52 - syncword */
|
|
)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "A52 RAW OR SYNCWORD\n");
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
es->type = AUDIO_A52;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
/* SPU SUBS */
|
|
else if(type_from_pmt == SPU_DVB ||
|
|
(p[0] == 0x20)) // && p[1] == 0x00))
|
|
{
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
es->type = SPU_DVB;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
else if ((p[0] & 0xE0) == 0x20) //SPU_DVD
|
|
{
|
|
//DVD SUBS
|
|
es->start = p+1;
|
|
es->size = packet_len-1;
|
|
es->type = SPU_DVD;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
else if ((p[0] & 0xF0) == 0x80)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "A52 WITH HEADER\n");
|
|
es->start = p+4;
|
|
es->size = packet_len - 4;
|
|
es->type = AUDIO_A52;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
else if ((p[0]&0xf0) == 0xa0)
|
|
{
|
|
int pcm_offset;
|
|
|
|
for (pcm_offset=0; ++pcm_offset < packet_len-1 ; )
|
|
{
|
|
if (p[pcm_offset] == 0x01 && p[pcm_offset+1] == 0x80)
|
|
{ /* START */
|
|
pcm_offset += 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
es->start = p + pcm_offset;
|
|
es->size = packet_len - pcm_offset;
|
|
es->type = AUDIO_LPCM_BE;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
else if ((stream_id >= 0xbc) && ((stream_id & 0xf0) == 0xe0))
|
|
{
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
if(type_from_pmt != UNKNOWN)
|
|
es->type = type_from_pmt;
|
|
else
|
|
es->type = VIDEO_MPEG2;
|
|
if(es->payload_size)
|
|
es->payload_size -= packet_len;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: M2V size %d\n", es->size);
|
|
return 1;
|
|
}
|
|
else if ((stream_id == 0xfa))
|
|
{
|
|
if(type_from_pmt != -1) //MP4 A/V
|
|
{
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
es->type = type_from_pmt;
|
|
if(es->payload_size)
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
else if ((stream_id & 0xe0) == 0xc0)
|
|
{
|
|
int profile = 0, srate = 0, channels = 0;
|
|
uint32_t hdr, l = 0;
|
|
|
|
hdr = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
|
|
if((hdr & 0xfff00000) == 0xfff00000)
|
|
{
|
|
// ADTS AAC shows with MPA layer 4 (00 in the layer bitstream)
|
|
l = 4 - ((hdr & 0x00060000) >> 17);
|
|
profile = ((hdr & 0x0000C000) >> 14);
|
|
srate = ((hdr & 0x00003c00) >> 10);
|
|
channels = ((hdr & 0x000001E0) >> 5);
|
|
}
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "\n\naudio header: %2X %2X %2X %2X\nLAYER: %d, PROFILE: %d, SRATE=%d, CHANNELS=%d\n\n", p[0], p[1], p[3], p[4], l, profile, srate, channels);
|
|
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
|
|
|
|
//if((type_from_pmt == 0x0f) || (l == 4)) //see in parse_pmt()
|
|
if(l==4)
|
|
es->type = AUDIO_AAC;
|
|
else
|
|
es->type = AUDIO_MP2;
|
|
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
else if (type_from_pmt != -1) //as a last resort here we trust the PMT, if present
|
|
{
|
|
es->start = p;
|
|
es->size = packet_len;
|
|
es->type = type_from_pmt;
|
|
es->payload_size -= packet_len;
|
|
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: unknown packet, id: %x\n", stream_id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
static int ts_sync(stream_t *stream)
|
|
{
|
|
int c=0;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "TS_SYNC \n");
|
|
|
|
while(((c=stream_read_char(stream)) != 0x47) && ! stream->eof);
|
|
|
|
if(c == 0x47)
|
|
return c;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void ts_dump_streams(ts_priv_t *priv)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; i < 3; i++)
|
|
{
|
|
if((priv->fifo[i].pack != NULL) && (priv->fifo[i].offset != 0))
|
|
{
|
|
resize_demux_packet(priv->fifo[i].pack, priv->fifo[i].offset);
|
|
ds_add_packet(priv->fifo[i].ds, priv->fifo[i].pack);
|
|
priv->fifo[i].offset = 0;
|
|
priv->fifo[i].pack = NULL;
|
|
}
|
|
priv->fifo[i].broken = 1;
|
|
}
|
|
}
|
|
|
|
|
|
static inline int32_t prog_idx_in_pat(ts_priv_t *priv, uint16_t progid)
|
|
{
|
|
int x;
|
|
|
|
if(priv->pat.progs == NULL)
|
|
return -1;
|
|
|
|
for(x = 0; x < priv->pat.progs_cnt; x++)
|
|
{
|
|
if(priv->pat.progs[x].id == progid)
|
|
return x;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
static inline int32_t prog_id_in_pat(ts_priv_t *priv, uint16_t pid)
|
|
{
|
|
int x;
|
|
|
|
if(priv->pat.progs == NULL)
|
|
return -1;
|
|
|
|
for(x = 0; x < priv->pat.progs_cnt; x++)
|
|
{
|
|
if(priv->pat.progs[x].pmt_pid == pid)
|
|
return priv->pat.progs[x].id;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
DON'T REMOVE, I'LL NEED IT IN THE (NEAR) FUTURE)
|
|
static int check_crc32(uint32_t val, uint8_t *ptr, uint16_t len, uint8_t *vbase)
|
|
{
|
|
uint32_t tab_crc32, calc_crc32;
|
|
|
|
calc_crc32 = CalcCRC32(val, ptr, len);
|
|
|
|
tab_crc32 = (vbase[0] << 24) | (vbase[1] << 16) | (vbase[2] << 8) | vbase[3];
|
|
|
|
printf("CRC32, TAB: %x, CALC: %x, eq: %x\n", tab_crc32, calc_crc32, tab_crc32 == calc_crc32);
|
|
return (tab_crc32 == calc_crc32);
|
|
|
|
}
|
|
*/
|
|
|
|
static int parse_pat(ts_priv_t * priv, int is_start, unsigned char *buff, int size)
|
|
{
|
|
uint8_t skip, m = 0;
|
|
unsigned char *ptr;
|
|
unsigned char *base;
|
|
int entries, i, sections;
|
|
uint16_t progid;
|
|
|
|
//PRE-FILLING
|
|
if(! is_start)
|
|
{
|
|
if(priv->pat.buffer_len == 0) //a broken packet
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if(priv->pat.skip)
|
|
m = min(priv->pat.skip, size);
|
|
|
|
priv->pat.skip -= m;
|
|
if(m == size)
|
|
return -1; //keep on buffering
|
|
}
|
|
else //IS_START, replace the old content
|
|
{
|
|
priv->pat.buffer_len = 0;
|
|
skip = buff[0]+1;
|
|
m = min(skip, size);
|
|
|
|
priv->pat.skip = skip - m;
|
|
|
|
if(m == size)
|
|
return -1;
|
|
}
|
|
|
|
//FILLING
|
|
memcpy(&(priv->pat.buffer[priv->pat.buffer_len]), &buff[m], size - m);
|
|
|
|
priv->pat.buffer_len += size - m;
|
|
|
|
//PARSING
|
|
ptr = priv->pat.buffer;
|
|
|
|
priv->pat.table_id = ptr[0];
|
|
priv->pat.ssi = (ptr[1] >> 7) & 0x1;
|
|
priv->pat.curr_next = ptr[5] & 0x01;
|
|
priv->pat.ts_id = (ptr[3] << 8 ) | ptr[4];
|
|
priv->pat.version_number = (ptr[5] >> 1) & 0x1F;
|
|
priv->pat.section_length = ((ptr[1] & 0x03) << 8 ) | ptr[2];
|
|
priv->pat.section_number = ptr[6];
|
|
priv->pat.last_section_number = ptr[7];
|
|
|
|
|
|
if((! priv->pat.curr_next) || (priv->pat.table_id != 0)) // || (! priv->pat.ssi))
|
|
return 0;
|
|
|
|
|
|
//beginning of sections loop
|
|
sections = priv->pat.last_section_number - priv->pat.section_number + 1;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PAT, section %d of %d, TOTAL: %d\n", priv->pat.section_number, priv->pat.last_section_number, sections);
|
|
|
|
if(priv->pat.section_length + 3 > priv->pat.buffer_len)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PAT, section larger than buffer size: %d > %d, EXIT\n",
|
|
priv->pat.section_length, priv->pat.buffer_len - 3);
|
|
|
|
return -1; //KEEP ON FILLING THE TABLE
|
|
}
|
|
|
|
//check_crc32(0xFFFFFFFFL, ptr, priv->pat.buffer_len - 4, &ptr[priv->pat.buffer_len - 4]);
|
|
|
|
entries = (int) (priv->pat.section_length - 9) / 4; //entries per section
|
|
|
|
|
|
for(i=0; i < entries; i++)
|
|
{
|
|
int32_t idx;
|
|
base = &ptr[8 + i*4];
|
|
progid = (base[0] << 8) | base[1];
|
|
|
|
if((idx = prog_idx_in_pat(priv, progid)) == -1)
|
|
{
|
|
int sz = sizeof(struct pat_progs_t) * (priv->pat.progs_cnt+1);
|
|
priv->pat.progs = (struct pat_progs_t*) realloc(priv->pat.progs, sz);
|
|
if(priv->pat.progs == NULL)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PAT: COULDN'T REALLOC %d bytes, NEXT\n", sz);
|
|
break;
|
|
}
|
|
|
|
idx = priv->pat.progs_cnt;
|
|
priv->pat.progs_cnt++;
|
|
}
|
|
|
|
priv->pat.progs[idx].id = progid;
|
|
priv->pat.progs[idx].pmt_pid = ((base[2] & 0x1F) << 8) | base[3];
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PROG: %d (%d-th of %d), PMT: %d\n", priv->pat.progs[idx].id, i+1, entries, priv->pat.progs[idx].pmt_pid);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
static inline int32_t es_pid_in_pmt(pmt_t * pmt, uint16_t pid)
|
|
{
|
|
uint16_t i;
|
|
|
|
if(pmt == NULL)
|
|
return -1;
|
|
|
|
if(pmt->es == NULL)
|
|
return -1;
|
|
|
|
for(i = 0; i < pmt->es_cnt; i++)
|
|
{
|
|
if(pmt->es[i].pid == pid)
|
|
return (int32_t) i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int parse_descriptors(struct pmt_es_t *es, uint8_t *ptr)
|
|
{
|
|
int j, descr_len, len;
|
|
|
|
j = 0;
|
|
len = es->descr_length;
|
|
while(len > 2)
|
|
{
|
|
descr_len = ptr[j+1];
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "...descr id: 0x%x, len=%d\n", ptr[j], descr_len);
|
|
if(descr_len > len)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "INVALID DESCR LEN: %d vs %d max, EXIT LOOP\n", descr_len, len);
|
|
return -1;
|
|
}
|
|
|
|
|
|
if(ptr[j] == 0x6a) //A52 Descriptor
|
|
{
|
|
es->type = AUDIO_A52;
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "DVB A52 Descriptor\n");
|
|
}
|
|
else if(ptr[j] == 0x59) //Subtitling Descriptor
|
|
{
|
|
uint8_t subtype;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Subtitling Descriptor\n");
|
|
if(descr_len < 8)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Descriptor length too short for DVB Subtitle Descriptor: %d, SKIPPING\n", descr_len);
|
|
}
|
|
else
|
|
{
|
|
memcpy(es->lang, &ptr[j+2], 3);
|
|
es->lang[3] = 0;
|
|
subtype = ptr[j+5];
|
|
if(
|
|
(subtype >= 0x10 && subtype <= 0x13) ||
|
|
(subtype >= 0x20 && subtype <= 0x23)
|
|
)
|
|
{
|
|
es->type = SPU_DVB;
|
|
//page parameters: compo page 2 bytes, ancillary page 2 bytes
|
|
}
|
|
else
|
|
es->type = UNKNOWN;
|
|
}
|
|
}
|
|
else if(ptr[j] == 0x50) //Component Descriptor
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Component Descriptor\n");
|
|
memcpy(es->lang, &ptr[j+5], 3);
|
|
es->lang[3] = 0;
|
|
}
|
|
else if(ptr[j] == 0xa) //Language Descriptor
|
|
{
|
|
memcpy(es->lang, &ptr[j+2], 3);
|
|
es->lang[3] = 0;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "Language Descriptor: %s\n", es->lang);
|
|
}
|
|
else if(ptr[j] == 0x5) //Registration Descriptor (looks like e fourCC :) )
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Registration Descriptor\n");
|
|
if(descr_len < 4)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Registration Descriptor length too short: %d, SKIPPING\n", descr_len);
|
|
}
|
|
else
|
|
{
|
|
char *d;
|
|
memcpy(es->format_descriptor, &ptr[j+2], 4);
|
|
es->format_descriptor[4] = 0;
|
|
|
|
d = &ptr[j+2];
|
|
if(d[0] == 'A' && d[1] == 'C' && d[2] == '-' && d[3] == '3')
|
|
{
|
|
es->type = AUDIO_A52;
|
|
}
|
|
else
|
|
es->type = UNKNOWN;
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "FORMAT %s\n", es->format_descriptor);
|
|
}
|
|
}
|
|
else
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Unknown descriptor 0x%x, SKIPPING\n", ptr[j]);
|
|
|
|
len -= 2 + descr_len;
|
|
j += 2 + descr_len;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
static int parse_pmt(ts_priv_t * priv, uint16_t progid, uint16_t pid, int is_start, unsigned char *buff, int size)
|
|
{
|
|
unsigned char *base, *es_base;
|
|
pmt_t *pmt;
|
|
int32_t idx, es_count, section_bytes;
|
|
uint8_t skip, m=0;
|
|
|
|
idx = progid_idx_in_pmt(priv, progid);
|
|
|
|
if(idx == -1)
|
|
{
|
|
int sz = (priv->pmt_cnt + 1) * sizeof(pmt_t);
|
|
priv->pmt = (pmt_t *) realloc(priv->pmt, sz);
|
|
if(priv->pmt == NULL)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PMT: COULDN'T REALLOC %d bytes, NEXT\n", sz);
|
|
return NULL;
|
|
}
|
|
|
|
idx = priv->pmt_cnt;
|
|
memset(&(priv->pmt[idx]), 0, sizeof(pmt_t));
|
|
priv->pmt_cnt++;
|
|
}
|
|
|
|
pmt = &(priv->pmt[idx]);
|
|
|
|
|
|
if(! is_start)
|
|
{
|
|
if(pmt->buffer_len == 0)
|
|
{
|
|
//BROKEN PMT PACKET, DISCARD
|
|
return -1;
|
|
}
|
|
|
|
if(pmt->skip)
|
|
m = min(pmt->skip, size);
|
|
|
|
pmt->skip -= m;
|
|
if(m == size)
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
pmt->buffer_len = 0;
|
|
skip = buff[0] + 1;
|
|
m = min(skip, size);
|
|
|
|
pmt->skip = skip - m;
|
|
|
|
if(m == size)
|
|
return 0;
|
|
}
|
|
|
|
|
|
if(size-m + pmt->buffer_len > 2048)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "FILL_PMT(prog=%d, PID=%d), ERROR! PMT TOO LONG, IGNORING\n", progid, pid);
|
|
pmt->buffer_len = 0;
|
|
return NULL;
|
|
}
|
|
|
|
memcpy(&(pmt->buffer[pmt->buffer_len]), &buff[m], size - m);
|
|
pmt->progid = progid;
|
|
pmt->buffer_len += size - m;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "FILL_PMT(prog=%d), PMT_len: %d, IS_START: %d, TS_PID: %d, SIZE=%d, M=%d, ES_CNT=%d, IDX=%d, PMT_PTR=%p\n",
|
|
progid, pmt->buffer_len, is_start, pid, size, m, pmt->es_cnt, idx, pmt);
|
|
|
|
base = pmt->buffer;
|
|
|
|
|
|
pmt->table_id = base[0];
|
|
pmt->ssi = base[1] & 0x80;
|
|
pmt->section_length = (((base[1] & 0xf) << 8 ) | base[2]);
|
|
pmt->version_number = (base[5] >> 1) & 0x1f;
|
|
pmt->curr_next = (base[5] & 1);
|
|
pmt->section_number = base[6];
|
|
pmt->last_section_number = base[7];
|
|
pmt->PCR_PID = ((base[8] & 0x1f) << 8 ) | base[9];
|
|
pmt->prog_descr_length = ((base[10] & 0xf) << 8 ) | base[11];
|
|
|
|
|
|
|
|
if((pmt->curr_next == 0) || (pmt->table_id != 2))
|
|
return -1;
|
|
|
|
|
|
if(pmt->section_length + 3 > pmt->buffer_len)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT, SECTION LENGTH TOO LARGE FOR CURRENT BUFFER (%d vs %d), NEXT TIME\n", pmt->section_length, pmt->buffer_len);
|
|
|
|
return -1;
|
|
}
|
|
|
|
if(pmt->prog_descr_length > pmt->section_length - 9)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT, INVALID PROG_DESCR LENGTH (%d vs %d)\n", pmt->prog_descr_length, pmt->section_length - 9);
|
|
return -1;
|
|
}
|
|
|
|
|
|
es_base = &base[12 + pmt->prog_descr_length]; //the beginning of th ES loop
|
|
|
|
section_bytes= pmt->section_length - 13 - pmt->prog_descr_length;
|
|
es_count = 0;
|
|
|
|
while(section_bytes >= 5)
|
|
{
|
|
int es_pid, es_type;
|
|
|
|
es_type = es_base[0];
|
|
es_pid = ((es_base[1] & 0x1f) << 8) | es_base[2];
|
|
|
|
idx = es_pid_in_pmt(pmt, es_pid);
|
|
if(idx == -1)
|
|
{
|
|
int sz = sizeof(struct pmt_es_t) * (pmt->es_cnt + 1);
|
|
pmt->es = (struct pmt_es_t *) realloc(pmt->es, sz);
|
|
if(pmt->es == NULL)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PMT, COULDN'T ALLOCATE %d bytes for PMT_ES\n", sz);
|
|
continue;
|
|
}
|
|
idx = pmt->es_cnt;
|
|
memset(&(pmt->es[idx]), 0, sizeof(struct pmt_es_t));
|
|
pmt->es_cnt++;
|
|
}
|
|
|
|
pmt->es[idx].descr_length = ((es_base[3] & 0xf) << 8) | es_base[4];
|
|
|
|
|
|
if(pmt->es[idx].descr_length > section_bytes - 5)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT, ES_DESCR_LENGTH TOO LARGE %d > %d, EXIT\n",
|
|
pmt->es[idx].descr_length, section_bytes - 5);
|
|
return -1;
|
|
}
|
|
|
|
|
|
pmt->es[idx].pid = es_pid;
|
|
pmt->es[idx].type = es_type;
|
|
|
|
pmt->es[idx].type = UNKNOWN;
|
|
|
|
switch(es_type)
|
|
{
|
|
case 1:
|
|
pmt->es[idx].type = VIDEO_MPEG1;
|
|
break;
|
|
case 2:
|
|
pmt->es[idx].type = VIDEO_MPEG2;
|
|
break;
|
|
case 3:
|
|
case 4:
|
|
parse_descriptors(&pmt->es[idx], &es_base[5]);
|
|
pmt->es[idx].type = AUDIO_MP2;
|
|
break;
|
|
case 6:
|
|
parse_descriptors(&pmt->es[idx], &es_base[5]);
|
|
if(pmt->es[idx].type == 0x6)
|
|
pmt->es[idx].type = UNKNOWN;
|
|
break;
|
|
case 0x10:
|
|
pmt->es[idx].type = VIDEO_MPEG4;
|
|
break;
|
|
case 0x11:
|
|
parse_descriptors(&pmt->es[idx], &es_base[5]);
|
|
pmt->es[idx].type = AUDIO_AAC;
|
|
break;
|
|
|
|
/* seems to indicate an AAC in a certain broadcaster's tables, but
|
|
it's deceiving, so it's commented out
|
|
case 0x0f:
|
|
parse_descriptors(&pmt->es[idx], &es_base[5]);
|
|
pmt->es[idx].type = 0x0f;
|
|
break;
|
|
*/
|
|
|
|
case 0x81:
|
|
pmt->es[idx].type = AUDIO_A52;
|
|
break;
|
|
|
|
default:
|
|
{
|
|
if(es_type > 0x80)
|
|
{
|
|
parse_descriptors(&pmt->es[idx], &es_base[5]);
|
|
}
|
|
else
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "UNKNOWN ES TYPE=0x%x\n", es_type);
|
|
pmt->es[idx].type = UNKNOWN;
|
|
}
|
|
}
|
|
}
|
|
|
|
section_bytes -= 5 + pmt->es[idx].descr_length;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT(%d INDEX %d), STREAM: %d, FOUND pid=0x%x (%d), type=0x%x, ES_DESCR_LENGTH: %d, bytes left: %d\n",
|
|
progid, idx, es_count, pmt->es[idx].pid, pmt->es[idx].pid, pmt->es[idx].type, pmt->es[idx].descr_length, section_bytes);
|
|
|
|
|
|
es_base += 5 + pmt->es[idx].descr_length;
|
|
|
|
es_count++;
|
|
}
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "----------------------------\n");
|
|
return 1;
|
|
}
|
|
|
|
|
|
static inline int32_t pid_type_from_pmt(ts_priv_t *priv, int pid)
|
|
{
|
|
int32_t pmt_idx, pid_idx, i, j;
|
|
|
|
pmt_idx = progid_idx_in_pmt(priv, priv->prog);
|
|
|
|
if(pmt_idx != -1)
|
|
{
|
|
pid_idx = es_pid_in_pmt(&(priv->pmt[pmt_idx]), pid);
|
|
if(pid_idx != -1)
|
|
return priv->pmt[pmt_idx].es[pid_idx].type;
|
|
}
|
|
//else
|
|
//{
|
|
for(i = 0; i < priv->pmt_cnt; i++)
|
|
{
|
|
pmt_t *pmt = &(priv->pmt[i]);
|
|
for(j = 0; j < pmt->es_cnt; j++)
|
|
if(pmt->es[j].pid == pid)
|
|
return pmt->es[j].type;
|
|
}
|
|
//}
|
|
|
|
return UNKNOWN;
|
|
}
|
|
|
|
|
|
static inline uint8_t *pid_lang_from_pmt(ts_priv_t *priv, int pid)
|
|
{
|
|
int32_t pmt_idx, pid_idx, i, j;
|
|
|
|
pmt_idx = progid_idx_in_pmt(priv, priv->prog);
|
|
|
|
if(pmt_idx != -1)
|
|
{
|
|
pid_idx = es_pid_in_pmt(&(priv->pmt[pmt_idx]), pid);
|
|
if(pid_idx != -1)
|
|
return priv->pmt[pmt_idx].es[pid_idx].lang;
|
|
}
|
|
else
|
|
{
|
|
for(i = 0; i < priv->pmt_cnt; i++)
|
|
{
|
|
pmt_t *pmt = &(priv->pmt[i]);
|
|
for(j = 0; j < pmt->es_cnt; j++)
|
|
if(pmt->es[j].pid == pid)
|
|
return pmt->es[j].lang;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static int fill_packet(demuxer_t *demuxer, demux_stream_t *ds, demux_packet_t **dp, int *dp_offset, int *broken)
|
|
{
|
|
int ret = 0;
|
|
|
|
if((*dp != NULL) && (*dp_offset > 0))
|
|
{
|
|
if(*broken == 0)
|
|
{
|
|
ret = *dp_offset;
|
|
resize_demux_packet(*dp, ret); //shrinked to the right size
|
|
ds_add_packet(ds, *dp);
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "ADDED %d bytes to %s fifo, PTS=%f\n", ret, (ds == demuxer->audio ? "audio" : (ds == demuxer->video ? "video" : "sub")), (*dp)->pts);
|
|
}
|
|
else
|
|
{
|
|
ret = 0;
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "BROKEN PES, DISCARDING\n");
|
|
free_demux_packet(*dp);
|
|
}
|
|
}
|
|
|
|
*broken = 1;
|
|
*dp = NULL;
|
|
*dp_offset = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
// 0 = EOF or no stream found
|
|
// else = [-] number of bytes written to the packet
|
|
static int ts_parse(demuxer_t *demuxer , ES_stream_t *es, unsigned char *packet, int probe)
|
|
{
|
|
ES_stream_t *tss;
|
|
uint8_t done = 0;
|
|
int buf_size, is_start, pid, base;
|
|
int len, cc, cc_ok, afc, retv = 0, is_video, is_audio, is_sub;
|
|
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
|
|
stream_t *stream = demuxer->stream;
|
|
char *p, tmp[TS_FEC_PACKET_SIZE];
|
|
demux_stream_t *ds = NULL;
|
|
demux_packet_t **dp = NULL;
|
|
int *dp_offset = 0, *buffer_size = 0, *broken = NULL;
|
|
int32_t progid, pid_type, bad, ts_error;
|
|
|
|
|
|
while(! done)
|
|
{
|
|
bad = ts_error = 0;
|
|
ds = (demux_stream_t*) NULL;
|
|
dp = (demux_packet_t **) NULL;
|
|
broken = dp_offset = buffer_size = NULL;
|
|
|
|
buf_size = priv->ts.packet_size;
|
|
|
|
if(stream_eof(stream))
|
|
{
|
|
if(! probe)
|
|
{
|
|
ts_dump_streams(priv);
|
|
demuxer->filepos = stream_tell(demuxer->stream);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
if(! ts_sync(stream))
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "TS_PARSE: COULDN'T SYNC\n");
|
|
return 0;
|
|
}
|
|
|
|
len = stream_read(stream, &packet[1], 3);
|
|
if (len != 3)
|
|
return 0;
|
|
|
|
if((packet[1] >> 7) & 0x01) //transport error
|
|
ts_error = 1;
|
|
|
|
buf_size -= 4;
|
|
|
|
is_start = packet[1] & 0x40;
|
|
pid = ((packet[1] & 0x1f) << 8) | packet[2];
|
|
|
|
tss = priv->ts.pids[pid]; //an ES stream
|
|
if(tss == NULL)
|
|
{
|
|
tss = malloc(sizeof(ES_stream_t));
|
|
if(! tss)
|
|
continue;
|
|
memset(tss, 0, sizeof(ES_stream_t));
|
|
tss->pid = pid;
|
|
tss->last_cc = -1;
|
|
tss->type = UNKNOWN;
|
|
tss->payload_size = 0;
|
|
tss->seen = 0;
|
|
priv->ts.pids[pid] = tss;
|
|
}
|
|
|
|
|
|
|
|
if(((pid > 1) && (pid < 16)) || (pid == 8191)) //invalid pid
|
|
{
|
|
stream_skip(stream, buf_size-1);
|
|
continue;
|
|
}
|
|
|
|
cc = (packet[3] & 0xf);
|
|
cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc));
|
|
tss->last_cc = cc;
|
|
|
|
bad = ts_error || (! cc_ok);
|
|
|
|
if(! bad)
|
|
{
|
|
// skip adaptation field, but only if cc_ok is not corrupt,
|
|
//otherwise we may throw away good data
|
|
afc = (packet[3] >> 4) & 3;
|
|
if(! (afc % 2)) //no payload in this TS packet
|
|
{
|
|
stream_skip(stream, buf_size-1);
|
|
continue;
|
|
}
|
|
|
|
if(afc == 3)
|
|
{
|
|
int c;
|
|
c = stream_read_char(stream);
|
|
buf_size--;
|
|
|
|
c = min(c, buf_size);
|
|
stream_skip(stream, c);
|
|
buf_size -= c;
|
|
if(buf_size == 0)
|
|
continue;
|
|
|
|
afc = c + 1;
|
|
}
|
|
else
|
|
afc = 0; //payload only
|
|
}
|
|
else
|
|
{
|
|
// logically this packet should be dropped, but if I do it
|
|
// certain streams play corrupted. Maybe the decoders know
|
|
// how to deal with it, but at least I consider the packet
|
|
// as "not initial"
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "ts_parse: PID=%d, Transport error: %d, CC_OK: %s\n\n", tss->pid, ts_error, (cc_ok ? "yes" : "no"));
|
|
|
|
if(priv->keep_broken == 0)
|
|
{
|
|
stream_skip(stream, buf_size-1);
|
|
continue;
|
|
}
|
|
|
|
is_start = 0; //queued to the packet data
|
|
}
|
|
|
|
tss->seen++;
|
|
if(tss->seen == 16 && cc_ok) //at least a complete round
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "\nNew TS pid=%u\n", pid);
|
|
|
|
|
|
//TABLE PARSING
|
|
|
|
base = priv->ts.packet_size - buf_size;
|
|
if(pid == 0)
|
|
{
|
|
stream_read(stream,&packet[base], buf_size);
|
|
parse_pat(priv, is_start, &packet[base], buf_size);
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
progid = prog_id_in_pat(priv, pid);
|
|
if(((progid != -1) || (pid == 16)))
|
|
{
|
|
if(pid != demuxer->video->id && pid != demuxer->audio->id && pid != demuxer->sub->id)
|
|
{
|
|
stream_read(stream,&packet[base], buf_size);
|
|
parse_pmt(priv, progid, pid, is_start, &packet[base], buf_size);
|
|
continue;
|
|
}
|
|
else
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "Argh! Data pid used in the PMT, Skipping PMT parsing!\n");
|
|
}
|
|
}
|
|
|
|
|
|
priv->last_pid = pid;
|
|
|
|
is_video = ((tss->type == VIDEO_MPEG1) || (tss->type == VIDEO_MPEG2) || (tss->type == VIDEO_MPEG4));
|
|
is_audio = ((tss->type == AUDIO_MP2) || (tss->type == AUDIO_A52) || (tss->type == AUDIO_LPCM_BE) || (tss->type == AUDIO_AAC));
|
|
is_sub = ((tss->type == SPU_DVD) || (tss->type == SPU_DVB));
|
|
pid_type = pid_type_from_pmt(priv, pid);
|
|
|
|
// PES CONTENT STARTS HERE
|
|
if(! probe)
|
|
{
|
|
if((pid == demuxer->sub->id)) //or the lang is right
|
|
{
|
|
pid_type = SPU_DVD;
|
|
}
|
|
|
|
if(is_video && (demuxer->video->id == tss->pid))
|
|
{
|
|
ds = demuxer->video;
|
|
|
|
dp = &priv->fifo[1].pack;
|
|
dp_offset = &priv->fifo[1].offset;
|
|
buffer_size = &priv->fifo[1].buffer_size;
|
|
broken = &priv->fifo[1].broken;
|
|
}
|
|
else if(is_audio && (demuxer->audio->id == tss->pid))
|
|
{
|
|
ds = demuxer->audio;
|
|
|
|
dp = &priv->fifo[0].pack;
|
|
dp_offset = &priv->fifo[0].offset;
|
|
buffer_size = &priv->fifo[0].buffer_size;
|
|
broken = &priv->fifo[0].broken;
|
|
}
|
|
else if(is_sub
|
|
|| (pid_type == SPU_DVD) || (pid_type == SPU_DVB))
|
|
{
|
|
//SUBS are infrequent, so the initial detection may fail
|
|
// and we may need to add them at play-time
|
|
if(demuxer->sub->id == -1)
|
|
{
|
|
uint16_t p;
|
|
p = progid_for_pid(priv, tss->pid, priv->prog);
|
|
|
|
if(p == priv->prog)
|
|
{
|
|
int asgn = 0;
|
|
uint8_t *lang;
|
|
|
|
if(!strcmp(dvdsub_lang, ""))
|
|
asgn = 1;
|
|
else
|
|
{
|
|
lang = pid_lang_from_pmt(priv, pid);
|
|
if(lang != NULL)
|
|
asgn = (strncmp(lang, dvdsub_lang, 3) == 0);
|
|
else
|
|
asgn = 0;
|
|
}
|
|
|
|
if(asgn)
|
|
{
|
|
demuxer->sub->id = tss->pid;
|
|
mp_msg(MSGT_DEMUX, MSGL_INFO, "CHOSEN SUBs pid 0x%x (%d) FROM PROG %d\n", tss->pid, tss->pid, priv->prog);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "DISCARDED SUBs pid 0x%x (%d) NOT CHOSEN OR NOT IN PROG %d\n", tss->pid, tss->pid, priv->prog);
|
|
}
|
|
}
|
|
|
|
if(demuxer->sub->id == tss->pid)
|
|
{
|
|
ds = demuxer->sub;
|
|
|
|
dp = &priv->fifo[2].pack;
|
|
dp_offset = &priv->fifo[2].offset;
|
|
buffer_size = &priv->fifo[2].buffer_size;
|
|
broken = &priv->fifo[2].broken;
|
|
}
|
|
else
|
|
{
|
|
stream_skip(stream, buf_size);
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
stream_skip(stream, buf_size);
|
|
continue;
|
|
}
|
|
|
|
//IS IT TIME TO QUEUE DATA to the dp_packet?
|
|
if(is_start && (dp != NULL))
|
|
{
|
|
retv = fill_packet(demuxer, ds, dp, dp_offset, broken);
|
|
}
|
|
|
|
|
|
if(*dp == NULL)
|
|
{
|
|
*dp = new_demux_packet(*buffer_size); //es->size
|
|
*dp_offset = 0;
|
|
if(! *dp)
|
|
{
|
|
fprintf(stderr, "fill_buffer, NEW_ADD_PACKET(%d)FAILED\n", *buffer_size);
|
|
continue;
|
|
}
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "CREATED DP(%d)\n", *buffer_size);
|
|
}
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "NOW PACKET_SIZE = %d, DP_OFFSET = %d\n", *buffer_size, *dp_offset);
|
|
}
|
|
|
|
|
|
|
|
if(is_start)
|
|
{
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "IS_START\n");
|
|
|
|
p = &packet[base];
|
|
stream_read(stream, p, buf_size);
|
|
|
|
len = pes_parse2(p, buf_size, es, pid_type);
|
|
|
|
if(len > 0)
|
|
{
|
|
if(es->type == UNKNOWN)
|
|
continue;
|
|
|
|
es->pid = tss->pid;
|
|
tss->type = es->type;
|
|
|
|
if((es->pts < tss->last_pts) && es->pts)
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "BACKWARDS PTS! : NEW: %f -> LAST: %f, PID %d\n", es->pts, tss->last_pts, tss->pid);
|
|
|
|
if(es->pts == 0.0f)
|
|
es->pts = tss->pts = tss->last_pts;
|
|
else
|
|
tss->pts = tss->last_pts = es->pts;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "ts_parse, NEW pid=%d, PSIZE: %u, type=%X, start=%p, len=%d\n",
|
|
es->pid, es->payload_size, es->type, es->start, es->size);
|
|
|
|
tss->payload_size = es->payload_size;
|
|
|
|
demuxer->filepos = stream_tell(demuxer->stream) - es->size;
|
|
|
|
if(probe)
|
|
return 1; //es->size;
|
|
else
|
|
{
|
|
*broken = 0;
|
|
if(es->size > 0)
|
|
{
|
|
if(*dp_offset + es->size > *buffer_size)
|
|
{
|
|
*buffer_size = *dp_offset + es->size + TS_FEC_PACKET_SIZE;
|
|
resize_demux_packet(*dp, *buffer_size);
|
|
//we'll skip at least one RESIZE() in the next iteration of ts_parse()
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "RESIZE DP TO %d\n", *buffer_size);
|
|
}
|
|
memcpy(&((*dp)->buffer[*dp_offset]), es->start, es->size);
|
|
*dp_offset += es->size;
|
|
(*dp)->flags = 0;
|
|
(*dp)->pos = stream_tell(demuxer->stream);
|
|
(*dp)->pts = es->pts;
|
|
}
|
|
|
|
if(retv > 0)
|
|
return retv;
|
|
else
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
uint16_t sz;
|
|
|
|
if(tss->type == UNKNOWN)
|
|
{
|
|
stream_skip(stream, buf_size);
|
|
continue;
|
|
}
|
|
|
|
|
|
es->pid = tss->pid;
|
|
es->type = tss->type;
|
|
es->pts = tss->pts = tss->last_pts;
|
|
es->start = &packet[base];
|
|
|
|
|
|
if(tss->payload_size > 0)
|
|
{
|
|
sz = min(tss->payload_size, buf_size);
|
|
tss->payload_size -= sz;
|
|
es->size = sz;
|
|
}
|
|
else
|
|
{
|
|
if(is_video)
|
|
{
|
|
sz = es->size = buf_size;
|
|
}
|
|
else
|
|
{
|
|
stream_skip(stream, buf_size);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
|
|
if(! probe)
|
|
{
|
|
if(*dp_offset + sz > *buffer_size)
|
|
{
|
|
*buffer_size = *dp_offset + sz + TS_FEC_PACKET_SIZE;
|
|
resize_demux_packet(*dp, *buffer_size);
|
|
//we'll skip at least one RESIZE() in the next iteration of ts_parse()
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "RESIZE DP TO %d\n", *buffer_size);
|
|
//mp_msg(MSGT_DEMUX, MSGL_INFO, "SECOND TYPE=%x, bytes=%d, afc=%d, psize=%d, tell=%llu\n", es->type, sz, afc, tss->payload_size, (uint64_t) stream_tell(demuxer->stream));
|
|
}
|
|
|
|
stream_read(stream, &((*dp)->buffer[*dp_offset]), sz);
|
|
*dp_offset += sz;
|
|
|
|
if(buf_size - sz > 0)
|
|
{
|
|
stream_skip(stream, buf_size - sz);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
stream_read(stream, es->start, sz);
|
|
if(buf_size - sz) stream_read(stream, tmp, buf_size-sz);
|
|
|
|
if(es->size)
|
|
return es->size;
|
|
else
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern void resync_audio_stream(sh_audio_t *sh_audio);
|
|
extern void skip_audio_frame(sh_audio_t *sh_audio);
|
|
|
|
static void reset_fifos(ts_priv_t* priv, int a, int v, int s)
|
|
{
|
|
if(a)
|
|
{
|
|
if(priv->fifo[0].pack != NULL)
|
|
{
|
|
free_demux_packet(priv->fifo[0].pack);
|
|
priv->fifo[0].pack = NULL;
|
|
}
|
|
priv->fifo[0].offset = 0;
|
|
priv->fifo[0].broken = 1;
|
|
}
|
|
|
|
if(v)
|
|
{
|
|
if(priv->fifo[1].pack != NULL)
|
|
{
|
|
free_demux_packet(priv->fifo[1].pack);
|
|
priv->fifo[1].pack = NULL;
|
|
}
|
|
priv->fifo[1].offset = 0;
|
|
priv->fifo[1].broken = 1;
|
|
}
|
|
|
|
if(s)
|
|
{
|
|
if(priv->fifo[2].pack != NULL)
|
|
{
|
|
free_demux_packet(priv->fifo[2].pack);
|
|
priv->fifo[2].pack = NULL;
|
|
}
|
|
priv->fifo[2].offset = 0;
|
|
priv->fifo[2].broken = 1;
|
|
}
|
|
}
|
|
|
|
extern int videobuf_code_len;
|
|
extern int sync_video_packet(demux_stream_t *);
|
|
extern int skip_video_packet(demux_stream_t *);
|
|
|
|
void demux_seek_ts(demuxer_t *demuxer, float rel_seek_secs, int flags)
|
|
{
|
|
demux_stream_t *d_audio=demuxer->audio;
|
|
demux_stream_t *d_video=demuxer->video;
|
|
demux_stream_t *d_sub=demuxer->sub;
|
|
sh_audio_t *sh_audio=d_audio->sh;
|
|
sh_video_t *sh_video=d_video->sh;
|
|
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
|
|
int i, video_stats;
|
|
off_t newpos;
|
|
|
|
//================= seek in MPEG-TS ==========================
|
|
|
|
ts_dump_streams(demuxer->priv);
|
|
reset_fifos(priv, sh_audio != NULL, sh_video != NULL, demuxer->sub->id > 0);
|
|
|
|
|
|
if(sh_audio != NULL)
|
|
ds_free_packs(d_audio);
|
|
if(sh_video != NULL)
|
|
ds_free_packs(d_video);
|
|
if(demuxer->sub->id > 0)
|
|
ds_free_packs(d_sub);
|
|
|
|
|
|
video_stats = (sh_video != NULL);
|
|
if(video_stats)
|
|
video_stats = sh_video->i_bps;
|
|
|
|
newpos = (flags & 1) ? demuxer->movi_start : demuxer->filepos;
|
|
if(flags & 2) // float seek 0..1
|
|
newpos+=(demuxer->movi_end-demuxer->movi_start)*rel_seek_secs;
|
|
else
|
|
{
|
|
// time seek (secs)
|
|
|
|
if(! video_stats) // unspecified or VBR
|
|
newpos += 2324*75*rel_seek_secs; // 174.3 kbyte/sec
|
|
else
|
|
newpos += video_stats*rel_seek_secs;
|
|
}
|
|
|
|
|
|
if(newpos < demuxer->movi_start)
|
|
newpos = demuxer->movi_start; //begininng of stream
|
|
|
|
#ifdef _LARGEFILE_SOURCE
|
|
newpos &= ~((long long) (STREAM_BUFFER_SIZE - 1)); /* sector boundary */
|
|
#else
|
|
newpos &= ~(STREAM_BUFFER_SIZE - 1); /* sector boundary */
|
|
#endif
|
|
|
|
stream_seek(demuxer->stream, newpos);
|
|
|
|
videobuf_code_len = 0;
|
|
|
|
if(sh_video != NULL)
|
|
ds_fill_buffer(d_video);
|
|
|
|
if(sh_audio != NULL)
|
|
{
|
|
ds_fill_buffer(d_audio);
|
|
resync_audio_stream(sh_audio);
|
|
}
|
|
|
|
while(sh_video != NULL)
|
|
{
|
|
if(sh_audio && !d_audio->eof && d_video->pts && d_audio->pts)
|
|
{
|
|
float a_pts=d_audio->pts;
|
|
a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
|
|
if(d_video->pts > a_pts)
|
|
{
|
|
skip_audio_frame(sh_audio); // sync audio
|
|
continue;
|
|
}
|
|
}
|
|
|
|
|
|
i = sync_video_packet(d_video);
|
|
if((sh_video->format == VIDEO_MPEG1) || (sh_video->format == VIDEO_MPEG2))
|
|
{
|
|
if(i==0x1B3 || i==0x1B8) break; // found it!
|
|
}
|
|
else //MPEG4
|
|
{
|
|
if(i==0x1B6) break; // found it!
|
|
}
|
|
|
|
if(!i || !skip_video_packet(d_video)) break; // EOF?
|
|
}
|
|
}
|
|
|
|
|
|
int demux_ts_fill_buffer(demuxer_t * demuxer)
|
|
{
|
|
ES_stream_t es;
|
|
char packet[TS_FEC_PACKET_SIZE];
|
|
|
|
return -ts_parse(demuxer, &es, packet, 0);
|
|
}
|
|
|
|
|
|
|