mirror of
https://github.com/mpv-player/mpv
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5960ddb8e5
A better solution should be considered later, esp. for the many broken demuxers that do not treat these flags correctly. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25911 b3059339-0415-0410-9bf9-f77b7e298cf2
899 lines
27 KiB
C
899 lines
27 KiB
C
/*
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* tivo@wingert.org, February 2003
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*
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* Copyright (C) 2003 Christopher R. Wingert
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*
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* The license covers the portions of this file regarding TiVo additions.
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*
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* Olaf Beck and Tridge (indirectly) were essential at providing
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* information regarding the format of the TiVo streams.
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*
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* However, no code in the following subsection is directly copied from
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* either author.
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <stdarg.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/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 "sub_cc.h"
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#include "libavutil/avstring.h"
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#include "libavutil/intreadwrite.h"
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extern void skip_audio_frame( sh_audio_t *sh_audio );
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extern int sub_justify;
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// 2/c0: audio data
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// 3/c0: audio packet header (PES header)
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// 4/c0: audio data (S/A only?)
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// 9/c0: audio packet header, AC-3 audio
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// 2/e0: video data
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// 6/e0: video packet header (PES header)
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// 7/e0: video sequence header start
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// 8/e0: video I-frame header start
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// a/e0: video P-frame header start
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// b/e0: video B-frame header start
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// c/e0: video GOP header start
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// e/01: closed-caption data
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// e/02: Extended data services data
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#define TIVO_PES_FILEID 0xf5467abd
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#define TIVO_PART_LENGTH 0x20000000
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#define CHUNKSIZE ( 128 * 1024 )
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#define MAX_AUDIO_BUFFER ( 16 * 1024 )
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#define TY_V 1
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#define TY_A 2
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typedef struct
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{
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off_t startOffset;
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off_t fileSize;
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int chunks;
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} tmf_fileParts;
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#define MAX_TMF_PARTS 16
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typedef struct
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{
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int whichChunk;
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unsigned char lastAudio[ MAX_AUDIO_BUFFER ];
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int lastAudioEnd;
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int tivoType; // 1 = SA, 2 = DTiVo
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int64_t lastAudioPTS;
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int64_t lastVideoPTS;
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off_t size;
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int readHeader;
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int tmf;
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tmf_fileParts tmfparts[ MAX_TMF_PARTS ];
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int tmf_totalparts;
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} TiVoInfo;
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off_t vstream_streamsize( );
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void ty_ClearOSD( int start );
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// ===========================================================================
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#define TMF_SIG "showing.xml"
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// ===========================================================================
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static int ty_tmf_filetoparts( demuxer_t *demux, TiVoInfo *tivo )
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{
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int parts = 0;
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stream_seek(demux->stream, 0);
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "Dumping tar contents\n" );
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while (!demux->stream->eof)
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{
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char header[ 512 ];
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char *name;
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char *extension;
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char *sizestr;
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int size;
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off_t skip;
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if (stream_read(demux->stream, header, 512) < 512)
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{
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "Read bad\n" );
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break;
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}
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name = header;
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name[99] = 0;
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sizestr = &header[124];
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sizestr[11] = 0;
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size = strtol(sizestr, NULL, 8);
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "name %-20.20s size %-12.12s %d\n",
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name, sizestr, size );
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extension = strrchr(name, '.');
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if (extension && strcmp(extension, ".ty") == 0)
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{
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if ( parts >= MAX_TMF_PARTS ) {
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mp_msg( MSGT_DEMUX, MSGL_ERR, "ty:tmf too big\n" );
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break;
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}
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tivo->tmfparts[ parts ].fileSize = size;
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tivo->tmfparts[ parts ].startOffset = stream_tell(demux->stream);
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tivo->tmfparts[ parts ].chunks = size / CHUNKSIZE;
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mp_msg(MSGT_DEMUX, MSGL_DBG3,
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"tmf_filetoparts(): index %d, chunks %d\n"
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"tmf_filetoparts(): size %"PRId64"\n"
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"tmf_filetoparts(): startOffset %"PRId64"\n",
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parts, tivo->tmfparts[ parts ].chunks,
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tivo->tmfparts[ parts ].fileSize, tivo->tmfparts[ parts ].startOffset
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);
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parts++;
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}
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// size rounded up to blocks
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skip = (size + 511) & ~511;
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stream_skip(demux->stream, skip);
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}
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stream_reset(demux->stream);
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tivo->tmf_totalparts = parts;
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"tmf_filetoparts(): No More Part Files %d\n", parts );
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return 1;
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}
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// ===========================================================================
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static off_t tmf_filetooffset(TiVoInfo *tivo, int chunk)
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{
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int i;
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for (i = 0; i < tivo->tmf_totalparts; i++) {
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if (chunk < tivo->tmfparts[i].chunks)
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return tivo->tmfparts[i].startOffset + chunk * CHUNKSIZE;
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chunk -= tivo->tmfparts[i].chunks;
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}
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return -1;
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}
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// ===========================================================================
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static int tmf_load_chunk( demuxer_t *demux, TiVoInfo *tivo,
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unsigned char *buff, int readChunk )
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{
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off_t fileoffset;
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int count;
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "\ntmf_load_chunk() begin %d\n",
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readChunk );
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fileoffset = tmf_filetooffset(tivo, readChunk);
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if (fileoffset == -1 || !stream_seek(demux->stream, fileoffset)) {
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mp_msg( MSGT_DEMUX, MSGL_ERR, "Read past EOF()\n" );
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return 0;
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}
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count = stream_read( demux->stream, buff, CHUNKSIZE );
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demux->filepos = stream_tell( demux->stream );
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "tmf_load_chunk() count %x\n",
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count );
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"tmf_load_chunk() bytes %x %x %x %x %x %x %x %x\n",
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buff[ 0 ], buff[ 1 ], buff[ 2 ], buff[ 3 ],
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buff[ 4 ], buff[ 5 ], buff[ 6 ], buff[ 7 ] );
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "tmf_load_chunk() end\n" );
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return count;
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}
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// ===========================================================================
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// DTiVo MPEG 336, 480, 576, 768
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// SA TiVo 864
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// DTiVo AC-3 1550
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//
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#define SERIES1_PTS_LENGTH 11
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#define SERIES1_PTS_OFFSET 6
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#define SERIES2_PTS_LENGTH 16
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#define SERIES2_PTS_OFFSET 9
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#define AC3_PTS_LENGTH 16
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#define AC3_PTS_OFFSET 9
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static int IsValidAudioPacket( int size, int *ptsOffset, int *ptsLen )
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{
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// AC-3
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if ( size == 1550 || size == 1552 )
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{
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*ptsOffset = AC3_PTS_OFFSET;
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*ptsLen = AC3_PTS_LENGTH;
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return 1;
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}
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// MPEG
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if ( (size & 15) == (SERIES1_PTS_LENGTH & 15) )
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{
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*ptsOffset = SERIES1_PTS_OFFSET;
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*ptsLen = SERIES1_PTS_LENGTH;
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return 1;
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}
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if ( (size & 15) == (SERIES2_PTS_LENGTH & 15) )
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{
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*ptsOffset = SERIES2_PTS_OFFSET;
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*ptsLen = SERIES2_PTS_LENGTH;
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return 1;
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}
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Tossing Audio Packet Size %d\n",
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size );
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return 0;
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}
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static int64_t get_ty_pts( unsigned char *buf )
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{
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int a = buf[0] & 0xe;
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int b = AV_RB16(buf + 1);
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int c = AV_RB16(buf + 3);
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if (!(1 & a & b & c)) // invalid MPEG timestamp
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return MP_NOPTS_VALUE;
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a >>= 1; b >>= 1; c >>= 1;
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return (((uint64_t)a) << 30) | (b << 15) | c;
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}
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static void demux_ty_AddToAudioBuffer( TiVoInfo *tivo, unsigned char *buffer,
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int size )
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{
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if ( tivo->lastAudioEnd + size < MAX_AUDIO_BUFFER )
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{
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memcpy( &tivo->lastAudio[ tivo->lastAudioEnd ],
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buffer, size );
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tivo->lastAudioEnd += size;
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}
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else
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mp_msg( MSGT_DEMUX, MSGL_ERR,
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"ty:WARNING - Would have blown my audio buffer\n" );
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}
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static void demux_ty_CopyToDemuxPacket( demux_stream_t *ds,
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unsigned char *buffer, int size, off_t pos, int64_t pts )
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{
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demux_packet_t *dp = new_demux_packet( size );
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memcpy( dp->buffer, buffer, size );
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if (pts != MP_NOPTS_VALUE)
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dp->pts = pts / 90000.0;
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dp->pos = pos;
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dp->flags = 0;
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ds_add_packet( ds, dp );
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}
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static int demux_ty_FindESHeader( uint8_t nal,
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unsigned char *buffer, int bufferSize )
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{
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uint32_t search = 0x00000100 | nal;
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uint32_t found = -1;
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uint8_t *p = buffer;
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uint8_t *end = p + bufferSize;
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while (p < end) {
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found <<= 8;
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found |= *p++;
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if (found == search)
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return p - buffer - 4;
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}
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return -1;
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}
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static void demux_ty_FindESPacket( uint8_t nal,
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unsigned char *buffer, int bufferSize, int *esOffset1, int *esOffset2 )
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{
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*esOffset1 = demux_ty_FindESHeader(nal, buffer, bufferSize);
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if (*esOffset1 == -1) {
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*esOffset2 = -1;
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return;
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}
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buffer += *esOffset1 + 1;
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bufferSize -= *esOffset1 + 1;
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*esOffset2 = demux_ty_FindESHeader(nal, buffer, bufferSize);
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if (*esOffset2 != -1)
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*esOffset2 += *esOffset1 + 1;
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}
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#define VIDEO_NAL 0xe0
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#define AUDIO_NAL 0xc0
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#define AC3_NAL 0xbd
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static int demux_ty_fill_buffer( demuxer_t *demux, demux_stream_t *dsds )
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{
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int invalidType = 0;
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int errorHeader = 0;
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int recordsDecoded = 0;
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unsigned char chunk[ CHUNKSIZE ];
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int readSize;
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int numberRecs;
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unsigned char *recPtr;
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int offset;
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int counter;
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int aid;
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TiVoInfo *tivo = demux->priv;
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if ( demux->stream->type == STREAMTYPE_DVD )
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return 0;
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:ty processing\n" );
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if( demux->stream->eof ) return 0;
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// ======================================================================
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// If we haven't figured out the size of the stream, let's do so
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// ======================================================================
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#ifdef STREAMTYPE_STREAM_TY
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if ( demux->stream->type == STREAMTYPE_STREAM_TY )
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{
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// The vstream code figures out the exact size of the stream
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demux->movi_start = 0;
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demux->movi_end = vstream_streamsize();
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tivo->size = vstream_streamsize();
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}
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else
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#endif
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{
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// If its a local file, try to find the Part Headers, so we can
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// calculate the ACTUAL stream size
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// If we can't find it, go off with the file size and hope the
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// extract program did the "right thing"
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if ( tivo->readHeader == 0 )
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{
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off_t filePos;
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tivo->readHeader = 1;
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filePos = demux->filepos;
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stream_seek( demux->stream, 0 );
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readSize = stream_read( demux->stream, chunk, CHUNKSIZE );
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if ( memcmp( chunk, TMF_SIG, sizeof( TMF_SIG ) ) == 0 )
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{
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Detected a tmf\n" );
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tivo->tmf = 1;
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ty_tmf_filetoparts( demux, tivo );
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readSize = tmf_load_chunk( demux, tivo, chunk, 0 );
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}
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if ( readSize == CHUNKSIZE && AV_RB32(chunk) == TIVO_PES_FILEID )
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{
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off_t numberParts;
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readSize = 0;
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if ( tivo->tmf != 1 )
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{
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off_t offset;
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numberParts = demux->stream->end_pos / TIVO_PART_LENGTH;
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offset = numberParts * TIVO_PART_LENGTH;
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:ty/ty+Number Parts %"PRId64"\n",
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(int64_t)numberParts );
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if ( offset + CHUNKSIZE < demux->stream->end_pos )
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{
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stream_seek( demux->stream, offset );
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readSize = stream_read( demux->stream, chunk, CHUNKSIZE );
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}
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}
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else
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{
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numberParts = tivo->tmf_totalparts;
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offset = numberParts * TIVO_PART_LENGTH;
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readSize = tmf_load_chunk( demux, tivo, chunk,
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numberParts * ( TIVO_PART_LENGTH - CHUNKSIZE ) /
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CHUNKSIZE );
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}
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if ( readSize == CHUNKSIZE && AV_RB32(chunk) == TIVO_PES_FILEID )
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{
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int size = AV_RB24(chunk + 12);
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size -= 4;
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size *= CHUNKSIZE;
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tivo->size = numberParts * TIVO_PART_LENGTH;
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tivo->size += size;
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"ty:Header Calc Stream Size %"PRId64"\n", tivo->size );
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}
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}
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if ( demux->stream->start_pos > 0 )
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filePos = demux->stream->start_pos;
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stream_seek( demux->stream, filePos );
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demux->filepos = stream_tell( demux->stream );
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tivo->whichChunk = filePos / CHUNKSIZE;
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}
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demux->movi_start = 0;
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demux->movi_end = tivo->size;
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}
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// ======================================================================
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// Give a clue as to where we are in the stream
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// ======================================================================
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"ty:ty header size %"PRIx64"\n", (int64_t)tivo->size );
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"ty:ty which Chunk %d\n", tivo->whichChunk );
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"ty:file end_pos %"PRIx64"\n", (int64_t)demux->stream->end_pos );
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"\nty:wanted current offset %"PRIx64"\n", (int64_t)stream_tell( demux->stream ) );
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if ( tivo->size > 0 && stream_tell( demux->stream ) > tivo->size )
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{
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demux->stream->eof = 1;
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return 0;
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}
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do {
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if ( tivo->tmf != 1 )
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{
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// Make sure we are on a 128k boundary
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if ( demux->filepos % CHUNKSIZE != 0 )
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{
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int whichChunk = demux->filepos / CHUNKSIZE;
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if ( demux->filepos % CHUNKSIZE > CHUNKSIZE / 2 )
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whichChunk++;
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stream_seek( demux->stream, whichChunk * CHUNKSIZE );
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}
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demux->filepos = stream_tell( demux->stream );
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tivo->whichChunk = demux->filepos / CHUNKSIZE;
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readSize = stream_read( demux->stream, chunk, CHUNKSIZE );
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if ( readSize != CHUNKSIZE )
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return 0;
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}
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else
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{
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readSize = tmf_load_chunk( demux, tivo, chunk, tivo->whichChunk );
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if ( readSize != CHUNKSIZE )
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return 0;
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tivo->whichChunk++;
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}
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if (AV_RB32(chunk) == TIVO_PES_FILEID)
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mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Skipping PART Header\n" );
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} while (AV_RB32(chunk) == TIVO_PES_FILEID);
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mp_msg( MSGT_DEMUX, MSGL_DBG3,
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"\nty:actual current offset %"PRIx64"\n", stream_tell( demux->stream ) -
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CHUNKSIZE );
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|
|
|
|
|
// Let's make a Video Demux Stream for MPlayer
|
|
aid = 0x0;
|
|
if( !demux->v_streams[ aid ] ) new_sh_video( demux, aid );
|
|
if( demux->video->id == -1 ) demux->video->id = aid;
|
|
if( demux->video->id == aid )
|
|
{
|
|
demux_stream_t *ds = demux->video;
|
|
if( !ds->sh ) ds->sh = demux->v_streams[ aid ];
|
|
}
|
|
|
|
// ======================================================================
|
|
// Finally, we get to actually parse the chunk
|
|
// ======================================================================
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:ty parsing a chunk\n" );
|
|
numberRecs = chunk[ 0 ];
|
|
recPtr = &chunk[ 4 ];
|
|
offset = numberRecs * 16 + 4;
|
|
for ( counter = 0 ; counter < numberRecs ; counter++ )
|
|
{
|
|
int size = AV_RB24(recPtr) >> 4;
|
|
int type = recPtr[ 3 ];
|
|
int nybbleType = recPtr[ 2 ] & 0x0f;
|
|
recordsDecoded++;
|
|
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3,
|
|
"ty:Record Type %x/%x %d\n", nybbleType, type, size );
|
|
|
|
// ================================================================
|
|
// Video Parsing
|
|
// ================================================================
|
|
if ( type == 0xe0 )
|
|
{
|
|
if ( size > 0 && size + offset <= CHUNKSIZE )
|
|
{
|
|
int esOffset1 = demux_ty_FindESHeader( VIDEO_NAL, &chunk[ offset ],
|
|
size);
|
|
if ( esOffset1 != -1 )
|
|
tivo->lastVideoPTS = get_ty_pts(
|
|
&chunk[ offset + esOffset1 + 9 ] );
|
|
|
|
// Do NOT Pass the PES Header onto the MPEG2 Decode
|
|
if( nybbleType != 0x06 )
|
|
demux_ty_CopyToDemuxPacket( demux->video,
|
|
&chunk[ offset ], size, demux->filepos + offset,
|
|
tivo->lastVideoPTS );
|
|
offset += size;
|
|
}
|
|
else
|
|
errorHeader++;
|
|
}
|
|
// ================================================================
|
|
// Audio Parsing
|
|
// ================================================================
|
|
else if ( type == 0xc0 )
|
|
{
|
|
if ( size > 0 && size + offset <= CHUNKSIZE )
|
|
{
|
|
if( demux->audio->id == -1 )
|
|
{
|
|
if ( nybbleType == 0x02 )
|
|
continue; // DTiVo inconclusive, wait for more
|
|
else if ( nybbleType == 0x09 )
|
|
{
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Setting AC-3 Audio\n" );
|
|
aid = 0x80; // AC-3
|
|
}
|
|
else
|
|
{
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Setting MPEG Audio\n" );
|
|
aid = 0x0; // MPEG Audio
|
|
}
|
|
|
|
demux->audio->id = aid;
|
|
if( !demux->a_streams[ aid ] ) new_sh_audio( demux, aid );
|
|
if( demux->audio->id == aid )
|
|
{
|
|
demux_stream_t *ds = demux->audio;
|
|
if( !ds->sh ) {
|
|
sh_audio_t* sh_a;
|
|
ds->sh = demux->a_streams[ aid ];
|
|
sh_a = (sh_audio_t*)ds->sh;
|
|
switch(aid & 0xE0){ // 1110 0000 b (high 3 bit: type low 5: id)
|
|
case 0x00: sh_a->format=0x50;break; // mpeg
|
|
case 0xA0: sh_a->format=0x10001;break; // dvd pcm
|
|
case 0x80: if((aid & 0xF8) == 0x88) sh_a->format=0x2001;//dts
|
|
else sh_a->format=0x2000;break; // ac3
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
aid = demux->audio->id;
|
|
|
|
|
|
// SA DTiVo Audio Data, no PES
|
|
// ================================================
|
|
if ( nybbleType == 0x02 || nybbleType == 0x04 )
|
|
{
|
|
if ( nybbleType == 0x02 && tivo->tivoType == 2 )
|
|
demux_ty_AddToAudioBuffer( tivo, &chunk[ offset ], size );
|
|
else
|
|
{
|
|
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3,
|
|
"ty:Adding Audio Packet Size %d\n", size );
|
|
demux_ty_CopyToDemuxPacket( demux->audio,
|
|
&chunk[ offset ], size, ( demux->filepos + offset ),
|
|
tivo->lastAudioPTS );
|
|
}
|
|
}
|
|
|
|
// 3 - MPEG Audio with PES Header, either SA or DTiVo
|
|
// 9 - DTiVo AC3 Audio Data with PES Header
|
|
// ================================================
|
|
if ( nybbleType == 0x03 || nybbleType == 0x09 )
|
|
{
|
|
int esOffset1, esOffset2;
|
|
if ( nybbleType == 0x03 )
|
|
esOffset1 = demux_ty_FindESHeader( AUDIO_NAL, &chunk[ offset ],
|
|
size);
|
|
|
|
// SA PES Header, No Audio Data
|
|
// ================================================
|
|
if ( nybbleType == 0x03 && esOffset1 == 0 && size == 16 )
|
|
{
|
|
tivo->tivoType = 1;
|
|
tivo->lastAudioPTS = get_ty_pts( &chunk[ offset +
|
|
SERIES2_PTS_OFFSET ] );
|
|
}
|
|
else
|
|
// DTiVo Audio with PES Header
|
|
// ================================================
|
|
{
|
|
tivo->tivoType = 2;
|
|
|
|
demux_ty_AddToAudioBuffer( tivo, &chunk[ offset ], size );
|
|
demux_ty_FindESPacket( nybbleType == 9 ? AC3_NAL : AUDIO_NAL,
|
|
tivo->lastAudio, tivo->lastAudioEnd, &esOffset1,
|
|
&esOffset2 );
|
|
|
|
if ( esOffset1 != -1 && esOffset2 != -1 )
|
|
{
|
|
int packetSize = esOffset2 - esOffset1;
|
|
int headerSize;
|
|
int ptsOffset;
|
|
|
|
if ( IsValidAudioPacket( packetSize, &ptsOffset,
|
|
&headerSize ) )
|
|
{
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3,
|
|
"ty:Adding DTiVo Audio Packet Size %d\n",
|
|
packetSize );
|
|
|
|
tivo->lastAudioPTS = get_ty_pts(
|
|
&tivo->lastAudio[ esOffset1 + ptsOffset ] );
|
|
|
|
if (nybbleType == 9) headerSize = 0;
|
|
demux_ty_CopyToDemuxPacket
|
|
(
|
|
demux->audio,
|
|
&tivo->lastAudio[ esOffset1 + headerSize ],
|
|
packetSize - headerSize,
|
|
demux->filepos + offset,
|
|
tivo->lastAudioPTS
|
|
);
|
|
|
|
}
|
|
|
|
// Collapse the Audio Buffer
|
|
tivo->lastAudioEnd -= esOffset2;
|
|
memmove( &tivo->lastAudio[ 0 ],
|
|
&tivo->lastAudio[ esOffset2 ],
|
|
tivo->lastAudioEnd );
|
|
}
|
|
}
|
|
}
|
|
|
|
offset += size;
|
|
}
|
|
else
|
|
errorHeader++;
|
|
}
|
|
// ================================================================
|
|
// 1 = Closed Caption
|
|
// 2 = Extended Data Services
|
|
// ================================================================
|
|
else if ( type == 0x01 || type == 0x02 )
|
|
{
|
|
unsigned char lastXDS[ 16 ];
|
|
int b = AV_RB24(recPtr) >> 4;
|
|
b &= 0x7f7f;
|
|
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:%s %04x\n", type == 1 ? "CC" : "XDS", b);
|
|
|
|
lastXDS[ 0x00 ] = 0x00;
|
|
lastXDS[ 0x01 ] = 0x00;
|
|
lastXDS[ 0x02 ] = 0x01;
|
|
lastXDS[ 0x03 ] = 0xb2;
|
|
lastXDS[ 0x04 ] = 'T';
|
|
lastXDS[ 0x05 ] = 'Y';
|
|
lastXDS[ 0x06 ] = type;
|
|
lastXDS[ 0x07 ] = b >> 8;
|
|
lastXDS[ 0x08 ] = b;
|
|
if ( subcc_enabled )
|
|
demux_ty_CopyToDemuxPacket( demux->video, lastXDS, 0x09,
|
|
demux->filepos + offset, tivo->lastVideoPTS );
|
|
}
|
|
// ================================================================
|
|
// Unknown
|
|
// ================================================================
|
|
else
|
|
{
|
|
if ( size > 0 && size + offset <= CHUNKSIZE )
|
|
offset += size;
|
|
if (type != 3 && type != 5 && (type != 0 || size > 0)) {
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Invalid Type %x\n", type );
|
|
invalidType++;
|
|
}
|
|
}
|
|
recPtr += 16;
|
|
}
|
|
|
|
if ( errorHeader > 0 || invalidType > 0 )
|
|
{
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3,
|
|
"ty:Error Check - Records %d, Parsed %d, Errors %d + %d\n",
|
|
numberRecs, recordsDecoded, errorHeader, invalidType );
|
|
|
|
// Invalid MPEG ES Size Check
|
|
if ( errorHeader > numberRecs / 2 )
|
|
return 0;
|
|
|
|
// Invalid MPEG Stream Type Check
|
|
if ( invalidType > numberRecs / 2 )
|
|
return 0;
|
|
}
|
|
|
|
demux->filepos = stream_tell( demux->stream );
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void demux_seek_ty( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags )
|
|
{
|
|
demux_stream_t *d_audio = demuxer->audio;
|
|
demux_stream_t *d_video = demuxer->video;
|
|
sh_audio_t *sh_audio = d_audio->sh;
|
|
sh_video_t *sh_video = d_video->sh;
|
|
off_t newpos;
|
|
off_t res;
|
|
TiVoInfo *tivo = demuxer->priv;
|
|
|
|
mp_msg( MSGT_DEMUX, MSGL_DBG3, "ty:Seeking to %7.1f\n", rel_seek_secs );
|
|
|
|
tivo->lastAudioEnd = 0;
|
|
tivo->lastAudioPTS = MP_NOPTS_VALUE;
|
|
tivo->lastVideoPTS = MP_NOPTS_VALUE;
|
|
//
|
|
//================= seek in MPEG ==========================
|
|
demuxer->filepos = stream_tell( demuxer->stream );
|
|
|
|
newpos = ( flags & SEEK_ABSOLUTE ) ? demuxer->movi_start : demuxer->filepos;
|
|
|
|
if( flags & SEEK_FACTOR )
|
|
// float seek 0..1
|
|
newpos += ( demuxer->movi_end - demuxer->movi_start ) * rel_seek_secs;
|
|
else
|
|
{
|
|
// time seek (secs)
|
|
if( ! sh_video->i_bps ) // unspecified or VBR
|
|
newpos += 2324 * 75 * rel_seek_secs; // 174.3 kbyte/sec
|
|
else
|
|
newpos += sh_video->i_bps * rel_seek_secs;
|
|
}
|
|
|
|
if ( newpos < demuxer->movi_start )
|
|
{
|
|
if( demuxer->stream->type != STREAMTYPE_VCD ) demuxer->movi_start = 0;
|
|
if( newpos < demuxer->movi_start ) newpos = demuxer->movi_start;
|
|
}
|
|
|
|
res = newpos / CHUNKSIZE;
|
|
if ( rel_seek_secs >= 0 )
|
|
newpos = ( res + 1 ) * CHUNKSIZE;
|
|
else
|
|
newpos = res * CHUNKSIZE;
|
|
|
|
if ( newpos < 0 )
|
|
newpos = 0;
|
|
|
|
tivo->whichChunk = newpos / CHUNKSIZE;
|
|
|
|
stream_seek( demuxer->stream, newpos );
|
|
|
|
// re-sync video:
|
|
videobuf_code_len = 0; // reset ES stream buffer
|
|
|
|
ds_fill_buffer( d_video );
|
|
if( sh_audio )
|
|
ds_fill_buffer( d_audio );
|
|
|
|
while( 1 )
|
|
{
|
|
int i;
|
|
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( i == 0x1B3 || i == 0x1B8 ) break; // found it!
|
|
if( !i || !skip_video_packet( d_video ) ) break; // EOF?
|
|
}
|
|
if ( subcc_enabled )
|
|
ty_ClearOSD( 0 );
|
|
}
|
|
|
|
static int demux_ty_control( demuxer_t *demuxer,int cmd, void *arg )
|
|
{
|
|
demux_stream_t *d_video = demuxer->video;
|
|
sh_video_t *sh_video = d_video->sh;
|
|
|
|
switch(cmd)
|
|
{
|
|
case DEMUXER_CTRL_GET_TIME_LENGTH:
|
|
if(!sh_video->i_bps) // unspecified or VBR
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
*(double *)arg=
|
|
(double)demuxer->movi_end-demuxer->movi_start/sh_video->i_bps;
|
|
return DEMUXER_CTRL_GUESS;
|
|
|
|
case DEMUXER_CTRL_GET_PERCENT_POS:
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
default:
|
|
return DEMUXER_CTRL_NOTIMPL;
|
|
}
|
|
}
|
|
|
|
|
|
static void demux_close_ty( demuxer_t *demux )
|
|
{
|
|
TiVoInfo *tivo = demux->priv;
|
|
|
|
free( tivo );
|
|
sub_justify = 0;
|
|
}
|
|
|
|
|
|
static int ty_check_file(demuxer_t* demuxer)
|
|
{
|
|
TiVoInfo *tivo = calloc(1, sizeof(TiVoInfo));
|
|
demuxer->priv = tivo;
|
|
return ds_fill_buffer(demuxer->video) ? DEMUXER_TYPE_MPEG_TY : 0;
|
|
}
|
|
|
|
|
|
static demuxer_t* demux_open_ty(demuxer_t* demuxer)
|
|
{
|
|
sh_audio_t *sh_audio=NULL;
|
|
sh_video_t *sh_video=NULL;
|
|
|
|
sh_video=demuxer->video->sh;sh_video->ds=demuxer->video;
|
|
|
|
if(demuxer->audio->id!=-2) {
|
|
if(!ds_fill_buffer(demuxer->audio)){
|
|
mp_msg(MSGT_DEMUXER,MSGL_INFO,"MPEG: " MSGTR_MissingAudioStream);
|
|
demuxer->audio->sh=NULL;
|
|
} else {
|
|
sh_audio=demuxer->audio->sh;sh_audio->ds=demuxer->audio;
|
|
}
|
|
}
|
|
|
|
return demuxer;
|
|
}
|
|
|
|
|
|
const demuxer_desc_t demuxer_desc_mpeg_ty = {
|
|
"TiVo demuxer",
|
|
"tivo",
|
|
"TiVo",
|
|
"Christopher R. Wingert",
|
|
"Demux streams from TiVo",
|
|
DEMUXER_TYPE_MPEG_TY,
|
|
0, // unsafe autodetect
|
|
ty_check_file,
|
|
demux_ty_fill_buffer,
|
|
demux_open_ty,
|
|
demux_close_ty,
|
|
demux_seek_ty,
|
|
demux_ty_control
|
|
};
|