git.sesse.net Git - vlc/blob - modules/mux/ogg.c

   1 /*****************************************************************************
   2  * ogg.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 VideoLAN
   5  * $Id: ogg.c,v 1.2 2003/02/25 17:17:43 fenrir Exp $
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/sout.h>
  34
  35 #include "codecs.h"
  36
  37 #include <ogg/ogg.h>
  38
  39 /*****************************************************************************
  40  * Exported prototypes
  41  *****************************************************************************/
  42 static int     Open   ( vlc_object_t * );
  43 static void    Close  ( vlc_object_t * );
  44
  45 static int Capability( sout_instance_t *, int, void *, void * );
  46 static int AddStream( sout_instance_t *, sout_input_t * );
  47 static int DelStream( sout_instance_t *, sout_input_t * );
  48 static int Mux      ( sout_instance_t * );
  49
  50 /*****************************************************************************
  51  * Module descriptor
  52  *****************************************************************************/
  53 vlc_module_begin();
  54     set_description( _("Ogg/ogm muxer") );
  55     set_capability( "sout mux", 10 );
  56     add_shortcut( "ogg" );
  57     add_shortcut( "ogm" );
  58     set_callbacks( Open, Close );
  59 vlc_module_end();
  60
  61 /*****************************************************************************
  62  *
  63  *****************************************************************************/
  64 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
  65
  66 #define PACKET_TYPE_HEADER   0x01
  67 #define PACKET_TYPE_COMMENT  0x03
  68
  69 #define PACKET_IS_SYNCPOINT      0x08
  70
  71 typedef struct __attribute__((__packed__))
  72 {
  73     int32_t i_width;
  74     int32_t i_height;
  75 } ogg_stream_header_video_t;
  76
  77 typedef struct __attribute__((__packed__))
  78 {
  79     int16_t i_channels;
  80     int16_t i_block_align;
  81     int32_t i_avgbytespersec;
  82 } ogg_stream_header_audio_t;
  83
  84 typedef struct __attribute__((__packed__))
  85 {
  86     uint8_t i_packet_type;
  87
  88     char stream_type[8];
  89     char sub_type[4];
  90
  91     int32_t i_size;
  92
  93     int64_t i_time_unit;
  94     int64_t i_samples_per_unit;
  95     int32_t i_default_len;
  96
  97     int32_t i_buffer_size;
  98     int16_t i_bits_per_sample;
  99     int16_t i_padding_0;            // hum hum
 100     union
 101     {
 102         ogg_stream_header_video_t video;
 103         ogg_stream_header_audio_t audio;
 104     } header;
 105
 106 } ogg_stream_header_t;
 107
 108
 109 typedef struct
 110 {
 111     int i_cat;
 112     int i_fourcc;
 113
 114     ogg_stream_header_t header;
 115
 116     int i_packet_no;
 117
 118     mtime_t             i_dts;
 119     mtime_t             i_length;
 120     ogg_stream_state    os;
 121
 122 } ogg_stream_t;
 123
 124 typedef struct sout_mux_s
 125 {
 126     int b_write_header;
 127     int i_streams;
 128
 129 } sout_mux_t;
 130
 131 #define SetWLE( p, v ) _SetWLE( (uint8_t*)p, v)
 132 static void _SetWLE( uint8_t *p, uint16_t i_dw )
 133 {
 134     p[1] = ( i_dw >>  8 )&0xff;
 135     p[0] = ( i_dw       )&0xff;
 136 }
 137
 138 #define SetDWLE( p, v ) _SetDWLE( (uint8_t*)p, v)
 139 static void _SetDWLE( uint8_t *p, uint32_t i_dw )
 140 {
 141     p[3] = ( i_dw >> 24 )&0xff;
 142     p[2] = ( i_dw >> 16 )&0xff;
 143     p[1] = ( i_dw >>  8 )&0xff;
 144     p[0] = ( i_dw       )&0xff;
 145 }
 146 #define SetQWLE( p, v ) _SetQWLE( (uint8_t*)p, v)
 147 static void _SetQWLE( uint8_t *p, uint64_t i_qw )
 148 {
 149     SetDWLE( p,   i_qw&0xffffffff );
 150     SetDWLE( p+4, ( i_qw >> 32)&0xffffffff );
 151 }
 152
 153 static void OggSetDate( sout_buffer_t *, mtime_t , mtime_t  );
 154 static sout_buffer_t *OggStreamFlush( sout_instance_t *, ogg_stream_state *, mtime_t );
 155
 156 /*****************************************************************************
 157  * Open:
 158  *****************************************************************************/
 159 static int Open( vlc_object_t *p_this )
 160 {
 161     sout_instance_t     *p_sout = (sout_instance_t*)p_this;
 162     sout_mux_t          *p_mux;
 163
 164     msg_Info( p_sout, "Open" );
 165
 166     p_mux                 = malloc( sizeof( sout_mux_t ) );
 167     p_mux->i_streams      = 0;
 168     p_mux->b_write_header = VLC_TRUE;
 169
 170     p_sout->p_mux_data       = (void*)p_mux;
 171     p_sout->pf_mux_capacity  = Capability;
 172     p_sout->pf_mux_addstream = AddStream;
 173     p_sout->pf_mux_delstream = DelStream;
 174     p_sout->pf_mux           = Mux;
 175     p_sout->i_mux_preheader  = 1;
 176
 177     return VLC_SUCCESS;
 178 }
 179
 180 /*****************************************************************************
 181  * Close:
 182  *****************************************************************************/
 183
 184 static void Close( vlc_object_t * p_this )
 185 {
 186     sout_instance_t     *p_sout = (sout_instance_t*)p_this;
 187     sout_mux_t          *p_mux  = (sout_mux_t*)p_sout->p_mux_data;
 188
 189     msg_Info( p_sout, "Close" );
 190
 191     free( p_mux );
 192 }
 193
 194 static int Capability( sout_instance_t *p_sout, int i_query, void *p_args, void *p_answer )
 195 {
 196    switch( i_query )
 197    {
 198         case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
 199             *(vlc_bool_t*)p_answer = VLC_FALSE;
 200             return( SOUT_MUX_CAP_ERR_OK );
 201         default:
 202             return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
 203    }
 204 }
 205
 206 static int AddStream( sout_instance_t *p_sout, sout_input_t *p_input )
 207 {
 208     sout_mux_t          *p_mux  = (sout_mux_t*)p_sout->p_mux_data;
 209     ogg_stream_t        *p_stream;
 210
 211     BITMAPINFOHEADER    *p_bih;
 212     WAVEFORMATEX        *p_wf;
 213
 214     msg_Dbg( p_sout, "adding input" );
 215     p_input->p_mux_data = (void*)p_stream = malloc( sizeof( ogg_stream_t ) );
 216
 217     p_stream->i_cat       = p_input->input_format.i_cat;
 218     p_stream->i_fourcc    = p_input->input_format.i_fourcc;
 219     p_stream->i_packet_no = 0;
 220
 221     p_stream->header.i_packet_type = PACKET_TYPE_HEADER;
 222     switch( p_input->input_format.i_cat )
 223     {
 224         case VIDEO_ES:
 225             p_bih = (BITMAPINFOHEADER*)p_input->input_format.p_format;
 226             switch( p_input->input_format.i_fourcc )
 227             {
 228                 case VLC_FOURCC( 'm', 'p','4', 'v' ):
 229                 case VLC_FOURCC( 'D', 'I','V', '3' ):
 230                     memcpy( p_stream->header.stream_type,
 231                             "video    ",
 232                             8 );
 233                     if( p_input->input_format.i_fourcc == VLC_FOURCC( 'm', 'p','4', 'v' ) )
 234                     {
 235                         memcpy( p_stream->header.sub_type, "XVID", 4 );
 236                     }
 237                     else if( p_input->input_format.i_fourcc == VLC_FOURCC( 'D', 'I','V', '3' ) )
 238                     {
 239                         memcpy( p_stream->header.sub_type, "DIV3", 4 );
 240                     }
 241                     SetDWLE( &p_stream->header.i_size, sizeof( ogg_stream_header_t ) - 1);
 242                     /* XXX this won't make mplayer happy, but vlc can read that without any problem so...*/
 243                     SetQWLE( &p_stream->header.i_time_unit, 10*1000 );//(int64_t)10*1000*1000/(int64_t)25 );  // FIXME (25fps)
 244                     SetQWLE( &p_stream->header.i_samples_per_unit, 1 );
 245                     SetDWLE( &p_stream->header.i_default_len, 0 );      /* ??? */
 246                     SetDWLE( &p_stream->header.i_buffer_size, 1024*1024 );
 247                     SetWLE( &p_stream->header.i_bits_per_sample, 0 );
 248                     if( p_bih )
 249                     {
 250                         SetDWLE( &p_stream->header.header.video.i_width, p_bih->biWidth );
 251                         SetDWLE( &p_stream->header.header.video.i_height, p_bih->biHeight );
 252                     }
 253                     else
 254                     {
 255                         SetDWLE( &p_stream->header.header.video.i_width,  0 );
 256                         SetDWLE( &p_stream->header.header.video.i_height, 0 );
 257                     }
 258                     break;
 259                 default:
 260                     FREE( p_input->p_mux_data );
 261                     return( VLC_EGENERIC );
 262             }
 263             break;
 264         case AUDIO_ES:
 265             p_wf = (WAVEFORMATEX*)p_input->input_format.p_format;
 266             switch( p_input->input_format.i_fourcc )
 267             {
 268                 case VLC_FOURCC( 'm', 'p','g', 'a' ):
 269                 case VLC_FOURCC( 'a', '5','2', ' ' ):
 270                     memcpy( p_stream->header.stream_type,
 271                             "audio    ",
 272                             8 );
 273                     if( p_input->input_format.i_fourcc == VLC_FOURCC( 'm', 'p','g', 'a' ) )
 274                     {
 275                         memcpy( p_stream->header.sub_type, "55  ", 4 );
 276                     }
 277                     else if( p_input->input_format.i_fourcc == VLC_FOURCC( 'a', '5','2', ' ' ) )
 278                     {
 279                         memcpy( p_stream->header.sub_type, "2000", 4 );
 280                     }
 281                     SetDWLE( &p_stream->header.i_size, sizeof( ogg_stream_header_t ) - 1);
 282                     SetQWLE( &p_stream->header.i_time_unit, 1000000 );  /* is it used ? */
 283                     SetDWLE( &p_stream->header.i_default_len, 0 );      /* ??? */
 284                     SetDWLE( &p_stream->header.i_buffer_size, 30*1024 );
 285                     if( p_wf )
 286                     {
 287                         SetQWLE( &p_stream->header.i_samples_per_unit, p_wf->nSamplesPerSec );
 288                         SetWLE( &p_stream->header.i_bits_per_sample, p_wf->wBitsPerSample );
 289                         SetDWLE( &p_stream->header.header.audio.i_channels, p_wf->nChannels );
 290                         SetDWLE( &p_stream->header.header.audio.i_block_align, p_wf->nBlockAlign );
 291                         SetDWLE( &p_stream->header.header.audio.i_avgbytespersec, p_wf->nAvgBytesPerSec );
 292                     }
 293                     else
 294                     {
 295                         /* perhaps it's better to fail */
 296                         SetQWLE( &p_stream->header.i_samples_per_unit, 44100 );
 297                         SetWLE( &p_stream->header.i_bits_per_sample, 0 );
 298                         SetDWLE( &p_stream->header.header.audio.i_channels, 2 );
 299                         SetDWLE( &p_stream->header.header.audio.i_block_align, 0 );
 300                         SetDWLE( &p_stream->header.header.audio.i_avgbytespersec, 0 );
 301                     }
 302                     break;
 303                 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
 304                 default:
 305                     FREE( p_input->p_mux_data );
 306                     return( VLC_EGENERIC );
 307             }
 308             break;
 309         default:
 310             FREE( p_input->p_mux_data );
 311             return( VLC_EGENERIC );
 312     }
 313
 314     ogg_stream_init (&p_stream->os, rand ());
 315
 316     p_mux->i_streams++;
 317     return( VLC_SUCCESS );
 318 }
 319
 320 static int DelStream( sout_instance_t *p_sout, sout_input_t *p_input )
 321 {
 322     ogg_stream_t        *p_stream = (ogg_stream_t*)p_input->p_mux_data;
 323     sout_buffer_t       *p_og;
 324
 325     msg_Dbg( p_sout, "removing input" );
 326
 327     /* flush all remaining data */
 328
 329     p_og = OggStreamFlush( p_sout, &p_stream->os, 0 );
 330     if( p_og )
 331     {
 332         OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
 333
 334         sout_AccessOutWrite( p_sout->p_access, p_og );
 335     }
 336
 337     ogg_stream_clear( &p_stream->os );
 338
 339     FREE( p_input->p_mux_data );
 340     return( 0 );
 341 }
 342
 343 /*
 344  * TODO  move this function to src/stream_output.c (used by nearly all muxers)
 345  */
 346 static int MuxGetStream( sout_instance_t *p_sout,
 347                          int        *pi_stream,
 348                          mtime_t    *pi_dts )
 349 {
 350     mtime_t i_dts;
 351     int     i_stream;
 352     int     i;
 353
 354     for( i = 0, i_dts = 0, i_stream = -1; i < p_sout->i_nb_inputs; i++ )
 355     {
 356         sout_fifo_t  *p_fifo;
 357
 358         p_fifo = p_sout->pp_inputs[i]->p_fifo;
 359
 360         if( p_fifo->i_depth > 1 )
 361         {
 362             sout_buffer_t *p_buf;
 363
 364             p_buf = sout_FifoShow( p_fifo );
 365             if( i_stream < 0 || p_buf->i_dts < i_dts )
 366             {
 367                 i_dts = p_buf->i_dts;
 368                 i_stream = i;
 369             }
 370         }
 371         else
 372         {
 373             return( -1 ); // wait that all fifo have at least 2 packets
 374         }
 375     }
 376     if( pi_stream )
 377     {
 378         *pi_stream = i_stream;
 379     }
 380     if( pi_dts )
 381     {
 382         *pi_dts = i_dts;
 383     }
 384     return( i_stream );
 385 }
 386
 387
 388 static sout_buffer_t *OggStreamFlush( sout_instance_t *p_sout,
 389                                       ogg_stream_state *p_os,
 390                                       mtime_t i_pts )
 391 {
 392     sout_buffer_t       *p_og, *p_og_first = NULL;
 393     ogg_page            og;
 394
 395     for( ;; )
 396     {
 397         /* flush all data */
 398         int i_result;
 399         int i_size;
 400         if( ( i_result = ogg_stream_flush( p_os, &og ) ) == 0 )
 401         {
 402             break;
 403         }
 404         i_size = og.header_len + og.body_len;
 405         p_og = sout_BufferNew( p_sout, i_size);
 406
 407         memcpy( p_og->p_buffer,
 408                 og.header,
 409                 og.header_len );
 410         memcpy( p_og->p_buffer + og.header_len,
 411                 og.body,
 412                 og.body_len );
 413         p_og->i_size    = i_size;
 414         p_og->i_dts     = 0;
 415         p_og->i_pts     = i_pts;
 416         p_og->i_length  = 0;
 417
 418         i_pts   = 0; // write it only once
 419
 420         sout_BufferChain( &p_og_first, p_og );
 421     }
 422
 423     return( p_og_first );
 424 }
 425 static sout_buffer_t *OggStreamPageOut( sout_instance_t *p_sout,
 426                                         ogg_stream_state *p_os,
 427                                         mtime_t i_pts )
 428 {
 429     sout_buffer_t       *p_og, *p_og_first = NULL;
 430     ogg_page            og;
 431
 432     for( ;; )
 433     {
 434         /* flush all data */
 435         int i_result;
 436         int i_size;
 437         if( ( i_result = ogg_stream_pageout( p_os, &og ) ) == 0 )
 438         {
 439             break;
 440         }
 441         i_size = og.header_len + og.body_len;
 442         p_og = sout_BufferNew( p_sout, i_size);
 443
 444         memcpy( p_og->p_buffer,
 445                 og.header,
 446                 og.header_len );
 447         memcpy( p_og->p_buffer + og.header_len,
 448                 og.body,
 449                 og.body_len );
 450         p_og->i_size    = i_size;
 451         p_og->i_dts     = 0;
 452         p_og->i_pts     = i_pts;
 453         p_og->i_length  = 0;
 454
 455         i_pts   = 0; // write them only once
 456
 457         sout_BufferChain( &p_og_first, p_og );
 458     }
 459
 460     return( p_og_first );
 461 }
 462 static sout_buffer_t *OggCreateHeader( sout_instance_t *p_sout, mtime_t i_dts )
 463 {
 464     sout_buffer_t *p_hdr = NULL;
 465     sout_buffer_t *p_og;
 466     ogg_packet    op;
 467     int i;
 468
 469     /* write header for each stream */
 470     for( i = 0; i < p_sout->i_nb_inputs; i++ )
 471     {
 472         ogg_stream_t *p_stream;
 473
 474         p_stream = (ogg_stream_t*)p_sout->pp_inputs[i]->p_mux_data;
 475
 476         if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
 477         {
 478             /* special case */
 479         }
 480         else
 481         {
 482             /* ds header */
 483 #if 0
 484             uint8_t com[128];
 485             int     i_com;
 486 #endif
 487
 488             /* header */
 489             op.packet = (uint8_t*)&p_stream->header;
 490             op.bytes  = sizeof( ogg_stream_t );
 491             op.b_o_s  = 1;
 492             op.e_o_s  = 0;
 493             op.granulepos = 0;
 494             op.packetno = p_stream->i_packet_no++;
 495             ogg_stream_packetin( &p_stream->os, &op );
 496 #if 0
 497             /* I don't know why but this produce broken file */
 498             /* comment */
 499             com[0] = PACKET_TYPE_COMMENT;
 500             i_com = snprintf( &com[1], 128, "VLC 0.5.x stream output" ) + 1;
 501             op.packet = com;
 502             op.bytes  = i_com;
 503             op.b_o_s  = 0;
 504             op.e_o_s  = 0;
 505             op.granulepos = 0;
 506             op.packetno = p_stream->i_packet_no++;
 507             ogg_stream_packetin( &p_stream->os, &op );
 508 #endif
 509         }
 510
 511         p_og = OggStreamFlush( p_sout, &p_stream->os, 0 );
 512         sout_BufferChain( &p_hdr, p_og );
 513     }
 514
 515     /* set HEADER flag */
 516     for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
 517     {
 518         p_og->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
 519     }
 520     return( p_hdr );
 521 }
 522
 523
 524 static void OggSetDate( sout_buffer_t *p_og, mtime_t i_dts, mtime_t i_length )
 525 {
 526     int i_count;
 527     sout_buffer_t *p_tmp;
 528     mtime_t i_delta;
 529
 530     for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
 531     {
 532         i_count++;
 533     }
 534     i_delta = i_length / i_count;
 535
 536     for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
 537     {
 538         p_tmp->i_dts    = i_dts;
 539         p_tmp->i_length = i_delta;
 540
 541         i_dts += i_delta;
 542     }
 543 }
 544
 545 static int Mux      ( sout_instance_t *p_sout )
 546 {
 547     sout_mux_t          *p_mux  = (sout_mux_t*)p_sout->p_mux_data;
 548     sout_buffer_t       *p_og = NULL;
 549     int i_stream;
 550     mtime_t             i_dts;
 551
 552     if( p_mux->b_write_header )
 553     {
 554         if( MuxGetStream( p_sout, &i_stream, &i_dts) < 0 )
 555         {
 556             return( VLC_SUCCESS );
 557         }
 558         sout_BufferChain( &p_og, OggCreateHeader( p_sout, i_dts ) );
 559         p_mux->b_write_header = VLC_FALSE;
 560     }
 561
 562     for( ;; )
 563     {
 564         sout_input_t    *p_input;
 565         ogg_stream_t    *p_stream;
 566         sout_buffer_t   *p_data;
 567         ogg_packet          op;
 568
 569         if( MuxGetStream( p_sout, &i_stream, &i_dts) < 0 )
 570         {
 571             return( VLC_SUCCESS );
 572         }
 573
 574         p_input  = p_sout->pp_inputs[i_stream];
 575         p_stream = (ogg_stream_t*)p_input->p_mux_data;
 576
 577         p_data  = sout_FifoGet( p_input->p_fifo );
 578
 579         sout_BufferReallocFromPreHeader( p_sout, p_data, 1 );
 580         p_data->p_buffer[0] = PACKET_IS_SYNCPOINT;      // FIXME
 581
 582         op.packet = p_data->p_buffer;
 583         op.bytes  = p_data->i_size;
 584         op.b_o_s  = 0;
 585         op.e_o_s  = 0;
 586         if( p_stream->i_cat == AUDIO_ES )
 587         {
 588             /* number of sample from begining */
 589             op.granulepos = i_dts * p_stream->header.i_samples_per_unit / (int64_t)1000000;
 590         }
 591         else if( p_stream->i_cat == VIDEO_ES )
 592         {
 593             op.granulepos = i_dts/1000;//p_stream->i_packet_no;
 594         }
 595         op.packetno = p_stream->i_packet_no++;
 596         ogg_stream_packetin( &p_stream->os, &op );
 597
 598         sout_BufferChain( &p_og,
 599                           OggStreamPageOut( p_sout,
 600                                             &p_stream->os,
 601                                             p_data->i_pts ) );
 602
 603         if( p_og )
 604         {
 605             OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
 606             p_stream->i_dts = -1;
 607             p_stream->i_length = 0;;
 608             sout_AccessOutWrite( p_sout->p_access, p_og );
 609
 610             p_og = NULL;
 611         }
 612         else
 613         {
 614             if( p_stream->i_dts < 0 )
 615             {
 616                 p_stream->i_dts     = p_data->i_dts;
 617             }
 618             p_stream->i_length += p_data->i_length;
 619         }
 620
 621         sout_BufferDelete( p_sout, p_data );
 622     }
 623
 624     return( VLC_SUCCESS );
 625 }
 626