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 1.4 2003/03/31 03:46:11 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_mux_t *, int, void *, void * );
  46 static int AddStream( sout_mux_t *, sout_input_t * );
  47 static int DelStream( sout_mux_t *, sout_input_t * );
  48 static int Mux      ( sout_mux_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 struct sout_mux_sys_t
 125 {
 126     int     b_write_header;
 127     int     i_streams;
 128
 129     mtime_t i_start_dts;
 130 };
 131
 132 #define SetWLE( p, v ) _SetWLE( (uint8_t*)p, v)
 133 static void _SetWLE( uint8_t *p, uint16_t i_dw )
 134 {
 135     p[1] = ( i_dw >>  8 )&0xff;
 136     p[0] = ( i_dw       )&0xff;
 137 }
 138
 139 #define SetDWLE( p, v ) _SetDWLE( (uint8_t*)p, v)
 140 static void _SetDWLE( uint8_t *p, uint32_t i_dw )
 141 {
 142     p[3] = ( i_dw >> 24 )&0xff;
 143     p[2] = ( i_dw >> 16 )&0xff;
 144     p[1] = ( i_dw >>  8 )&0xff;
 145     p[0] = ( i_dw       )&0xff;
 146 }
 147 #define SetQWLE( p, v ) _SetQWLE( (uint8_t*)p, v)
 148 static void _SetQWLE( uint8_t *p, uint64_t i_qw )
 149 {
 150     SetDWLE( p,   i_qw&0xffffffff );
 151     SetDWLE( p+4, ( i_qw >> 32)&0xffffffff );
 152 }
 153
 154 static void OggSetDate( sout_buffer_t *, mtime_t , mtime_t  );
 155 static sout_buffer_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
 156
 157 /*****************************************************************************
 158  * Open:
 159  *****************************************************************************/
 160 static int Open( vlc_object_t *p_this )
 161 {
 162     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 163     sout_mux_sys_t  *p_sys;
 164
 165     msg_Info( p_mux, "Open" );
 166
 167     p_sys                 = malloc( sizeof( sout_mux_sys_t ) );
 168     p_sys->i_streams      = 0;
 169     p_sys->b_write_header = VLC_TRUE;
 170
 171     p_mux->p_sys        = p_sys;
 172     p_mux->pf_capacity  = Capability;
 173     p_mux->pf_addstream = AddStream;
 174     p_mux->pf_delstream = DelStream;
 175     p_mux->pf_mux       = Mux;
 176     p_mux->i_preheader  = 1;
 177
 178     return VLC_SUCCESS;
 179 }
 180
 181 /*****************************************************************************
 182  * Close:
 183  *****************************************************************************/
 184
 185 static void Close( vlc_object_t * p_this )
 186 {
 187     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 188     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 189
 190     msg_Info( p_mux, "Close" );
 191
 192     free( p_sys );
 193 }
 194
 195 static int Capability( sout_mux_t *p_mux, int i_query, void *p_args, void *p_answer )
 196 {
 197    switch( i_query )
 198    {
 199         case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
 200             *(vlc_bool_t*)p_answer = VLC_FALSE;
 201             return( SOUT_MUX_CAP_ERR_OK );
 202         default:
 203             return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
 204    }
 205 }
 206
 207 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 208 {
 209     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 210     ogg_stream_t        *p_stream;
 211
 212     BITMAPINFOHEADER    *p_bih;
 213     WAVEFORMATEX        *p_wf;
 214
 215     msg_Dbg( p_mux, "adding input" );
 216     p_input->p_sys = (void*)p_stream = malloc( sizeof( ogg_stream_t ) );
 217
 218     p_stream->i_cat       = p_input->input_format.i_cat;
 219     p_stream->i_fourcc    = p_input->input_format.i_fourcc;
 220     p_stream->i_packet_no = 0;
 221
 222     p_stream->header.i_packet_type = PACKET_TYPE_HEADER;
 223     switch( p_input->input_format.i_cat )
 224     {
 225         case VIDEO_ES:
 226             p_bih = (BITMAPINFOHEADER*)p_input->input_format.p_format;
 227             switch( p_input->input_format.i_fourcc )
 228             {
 229                 case VLC_FOURCC( 'm', 'p','4', 'v' ):
 230                 case VLC_FOURCC( 'D', 'I','V', '3' ):
 231                     memcpy( p_stream->header.stream_type,
 232                             "video    ",
 233                             8 );
 234                     if( p_input->input_format.i_fourcc == VLC_FOURCC( 'm', 'p','4', 'v' ) )
 235                     {
 236                         memcpy( p_stream->header.sub_type, "XVID", 4 );
 237                     }
 238                     else if( p_input->input_format.i_fourcc == VLC_FOURCC( 'D', 'I','V', '3' ) )
 239                     {
 240                         memcpy( p_stream->header.sub_type, "DIV3", 4 );
 241                     }
 242                     SetDWLE( &p_stream->header.i_size, sizeof( ogg_stream_header_t ) - 1);
 243                     /* XXX this won't make mplayer happy, but vlc can read that without any problem so...*/
 244                     SetQWLE( &p_stream->header.i_time_unit, 10*1000 );//(int64_t)10*1000*1000/(int64_t)25 );  // FIXME (25fps)
 245                     SetQWLE( &p_stream->header.i_samples_per_unit, 1 );
 246                     SetDWLE( &p_stream->header.i_default_len, 0 );      /* ??? */
 247                     SetDWLE( &p_stream->header.i_buffer_size, 1024*1024 );
 248                     SetWLE( &p_stream->header.i_bits_per_sample, 0 );
 249                     if( p_bih )
 250                     {
 251                         SetDWLE( &p_stream->header.header.video.i_width, p_bih->biWidth );
 252                         SetDWLE( &p_stream->header.header.video.i_height, p_bih->biHeight );
 253                     }
 254                     else
 255                     {
 256                         SetDWLE( &p_stream->header.header.video.i_width,  0 );
 257                         SetDWLE( &p_stream->header.header.video.i_height, 0 );
 258                     }
 259                     break;
 260                 default:
 261                     FREE( p_input->p_sys );
 262                     return( VLC_EGENERIC );
 263             }
 264             break;
 265         case AUDIO_ES:
 266             p_wf = (WAVEFORMATEX*)p_input->input_format.p_format;
 267             switch( p_input->input_format.i_fourcc )
 268             {
 269                 case VLC_FOURCC( 'm', 'p','g', 'a' ):
 270                 case VLC_FOURCC( 'a', '5','2', ' ' ):
 271                     memcpy( p_stream->header.stream_type,
 272                             "audio    ",
 273                             8 );
 274                     if( p_input->input_format.i_fourcc == VLC_FOURCC( 'm', 'p','g', 'a' ) )
 275                     {
 276                         memcpy( p_stream->header.sub_type, "55  ", 4 );
 277                     }
 278                     else if( p_input->input_format.i_fourcc == VLC_FOURCC( 'a', '5','2', ' ' ) )
 279                     {
 280                         memcpy( p_stream->header.sub_type, "2000", 4 );
 281                     }
 282                     SetDWLE( &p_stream->header.i_size, sizeof( ogg_stream_header_t ) - 1);
 283                     SetQWLE( &p_stream->header.i_time_unit, 1000000 );  /* is it used ? */
 284                     SetDWLE( &p_stream->header.i_default_len, 0 );      /* ??? */
 285                     SetDWLE( &p_stream->header.i_buffer_size, 30*1024 );
 286                     if( p_wf )
 287                     {
 288                         SetQWLE( &p_stream->header.i_samples_per_unit, p_wf->nSamplesPerSec );
 289                         SetWLE( &p_stream->header.i_bits_per_sample, p_wf->wBitsPerSample );
 290                         SetDWLE( &p_stream->header.header.audio.i_channels, p_wf->nChannels );
 291                         SetDWLE( &p_stream->header.header.audio.i_block_align, p_wf->nBlockAlign );
 292                         SetDWLE( &p_stream->header.header.audio.i_avgbytespersec, p_wf->nAvgBytesPerSec );
 293                     }
 294                     else
 295                     {
 296                         /* perhaps it's better to fail */
 297                         SetQWLE( &p_stream->header.i_samples_per_unit, 44100 );
 298                         SetWLE( &p_stream->header.i_bits_per_sample, 0 );
 299                         SetDWLE( &p_stream->header.header.audio.i_channels, 2 );
 300                         SetDWLE( &p_stream->header.header.audio.i_block_align, 0 );
 301                         SetDWLE( &p_stream->header.header.audio.i_avgbytespersec, 0 );
 302                     }
 303                     break;
 304                 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
 305                 default:
 306                     FREE( p_input->p_sys );
 307                     return( VLC_EGENERIC );
 308             }
 309             break;
 310         default:
 311             FREE( p_input->p_sys );
 312             return( VLC_EGENERIC );
 313     }
 314
 315     ogg_stream_init (&p_stream->os, rand ());
 316
 317     p_sys->i_streams++;
 318     return( VLC_SUCCESS );
 319 }
 320
 321 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 322 {
 323     ogg_stream_t        *p_stream = (ogg_stream_t*)p_input->p_sys;
 324     sout_buffer_t       *p_og;
 325
 326     msg_Dbg( p_mux, "removing input" );
 327
 328     /* flush all remaining data */
 329
 330     if( p_input->p_sys )
 331     {
 332         p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
 333         if( p_og )
 334         {
 335             OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
 336
 337             sout_AccessOutWrite( p_mux->p_access, p_og );
 338         }
 339
 340         ogg_stream_clear( &p_stream->os );
 341
 342         FREE( p_input->p_sys );
 343     }
 344     return( 0 );
 345 }
 346
 347 /*
 348  * TODO  move this function to src/stream_output.c (used by nearly all muxers)
 349  */
 350 static int MuxGetStream( sout_mux_t *p_mux,
 351                          int        *pi_stream,
 352                          mtime_t    *pi_dts )
 353 {
 354     mtime_t i_dts;
 355     int     i_stream;
 356     int     i;
 357
 358     for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
 359     {
 360         sout_fifo_t  *p_fifo;
 361
 362         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 363
 364         if( p_fifo->i_depth > 1 )
 365         {
 366             sout_buffer_t *p_buf;
 367
 368             p_buf = sout_FifoShow( p_fifo );
 369             if( i_stream < 0 || p_buf->i_dts < i_dts )
 370             {
 371                 i_dts = p_buf->i_dts;
 372                 i_stream = i;
 373             }
 374         }
 375         else
 376         {
 377             return( -1 ); // wait that all fifo have at least 2 packets
 378         }
 379     }
 380     if( pi_stream )
 381     {
 382         *pi_stream = i_stream;
 383     }
 384     if( pi_dts )
 385     {
 386         *pi_dts = i_dts;
 387     }
 388     return( i_stream );
 389 }
 390
 391
 392 static sout_buffer_t *OggStreamFlush( sout_mux_t *p_mux,
 393                                       ogg_stream_state *p_os,
 394                                       mtime_t i_pts )
 395 {
 396     sout_buffer_t       *p_og, *p_og_first = NULL;
 397     ogg_page            og;
 398
 399     for( ;; )
 400     {
 401         /* flush all data */
 402         int i_result;
 403         int i_size;
 404         if( ( i_result = ogg_stream_flush( p_os, &og ) ) == 0 )
 405         {
 406             break;
 407         }
 408         i_size = og.header_len + og.body_len;
 409         p_og = sout_BufferNew( p_mux->p_sout, i_size);
 410
 411         memcpy( p_og->p_buffer,
 412                 og.header,
 413                 og.header_len );
 414         memcpy( p_og->p_buffer + og.header_len,
 415                 og.body,
 416                 og.body_len );
 417         p_og->i_size    = i_size;
 418         p_og->i_dts     = 0;
 419         p_og->i_pts     = i_pts;
 420         p_og->i_length  = 0;
 421
 422         i_pts   = 0; // write it only once
 423
 424         sout_BufferChain( &p_og_first, p_og );
 425     }
 426
 427     return( p_og_first );
 428 }
 429 static sout_buffer_t *OggStreamPageOut( sout_mux_t *p_mux,
 430                                         ogg_stream_state *p_os,
 431                                         mtime_t i_pts )
 432 {
 433     sout_buffer_t       *p_og, *p_og_first = NULL;
 434     ogg_page            og;
 435
 436     for( ;; )
 437     {
 438         /* flush all data */
 439         int i_result;
 440         int i_size;
 441         if( ( i_result = ogg_stream_pageout( p_os, &og ) ) == 0 )
 442         {
 443             break;
 444         }
 445         i_size = og.header_len + og.body_len;
 446         p_og = sout_BufferNew( p_mux->p_sout, i_size);
 447
 448         memcpy( p_og->p_buffer,
 449                 og.header,
 450                 og.header_len );
 451         memcpy( p_og->p_buffer + og.header_len,
 452                 og.body,
 453                 og.body_len );
 454         p_og->i_size    = i_size;
 455         p_og->i_dts     = 0;
 456         p_og->i_pts     = i_pts;
 457         p_og->i_length  = 0;
 458
 459         i_pts   = 0; // write them only once
 460
 461         sout_BufferChain( &p_og_first, p_og );
 462     }
 463
 464     return( p_og_first );
 465 }
 466 static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
 467 {
 468     sout_buffer_t *p_hdr = NULL;
 469     sout_buffer_t *p_og;
 470     ogg_packet    op;
 471     int i;
 472
 473     /* write header for each stream */
 474     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 475     {
 476         ogg_stream_t *p_stream;
 477
 478         p_stream = (ogg_stream_t*)p_mux->pp_inputs[i]->p_sys;
 479
 480         if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
 481         {
 482             /* special case */
 483         }
 484         else
 485         {
 486             /* ds header */
 487 #if 0
 488             uint8_t com[128];
 489             int     i_com;
 490 #endif
 491
 492             /* header */
 493             op.packet = (uint8_t*)&p_stream->header;
 494             op.bytes  = sizeof( ogg_stream_t );
 495             op.b_o_s  = 1;
 496             op.e_o_s  = 0;
 497             op.granulepos = 0;
 498             op.packetno = p_stream->i_packet_no++;
 499             ogg_stream_packetin( &p_stream->os, &op );
 500 #if 0
 501             /* I don't know why but this produce broken file */
 502             /* comment */
 503             com[0] = PACKET_TYPE_COMMENT;
 504             i_com = snprintf( &com[1], 128, "VLC 0.5.x stream output" ) + 1;
 505             op.packet = com;
 506             op.bytes  = i_com;
 507             op.b_o_s  = 0;
 508             op.e_o_s  = 0;
 509             op.granulepos = 0;
 510             op.packetno = p_stream->i_packet_no++;
 511             ogg_stream_packetin( &p_stream->os, &op );
 512 #endif
 513         }
 514
 515         p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
 516         sout_BufferChain( &p_hdr, p_og );
 517     }
 518
 519     /* set HEADER flag */
 520     for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
 521     {
 522         p_og->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
 523     }
 524     return( p_hdr );
 525 }
 526
 527
 528 static void OggSetDate( sout_buffer_t *p_og, mtime_t i_dts, mtime_t i_length )
 529 {
 530     int i_count;
 531     sout_buffer_t *p_tmp;
 532     mtime_t i_delta;
 533
 534     for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
 535     {
 536         i_count++;
 537     }
 538     i_delta = i_length / i_count;
 539
 540     for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
 541     {
 542         p_tmp->i_dts    = i_dts;
 543         p_tmp->i_length = i_delta;
 544
 545         i_dts += i_delta;
 546     }
 547 }
 548
 549 static int Mux      ( sout_mux_t *p_mux )
 550 {
 551     sout_mux_sys_t      *p_sys  = p_mux->p_sys;
 552     sout_buffer_t       *p_og = NULL;
 553     int i_stream;
 554     mtime_t             i_dts;
 555
 556     if( p_sys->b_write_header )
 557     {
 558         if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
 559         {
 560             msg_Dbg( p_mux, "waiting data..." );
 561             return( VLC_SUCCESS );
 562         }
 563         p_sys->i_start_dts = i_dts;
 564
 565         msg_Dbg( p_mux, "writing header" );
 566         sout_BufferChain( &p_og, OggCreateHeader( p_mux, i_dts ) );
 567         p_sys->b_write_header = VLC_FALSE;
 568     }
 569
 570     for( ;; )
 571     {
 572         sout_input_t    *p_input;
 573         ogg_stream_t    *p_stream;
 574         sout_buffer_t   *p_data;
 575         ogg_packet          op;
 576
 577         if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
 578         {
 579             //msg_Dbg( p_mux, "waiting data..." );
 580             return( VLC_SUCCESS );
 581         }
 582         //msg_Dbg( p_mux, "doing job" );
 583
 584         p_input  = p_mux->pp_inputs[i_stream];
 585         p_stream = (ogg_stream_t*)p_input->p_sys;
 586
 587         p_data  = sout_FifoGet( p_input->p_fifo );
 588
 589         sout_BufferReallocFromPreHeader( p_mux->p_sout, p_data, 1 );
 590         p_data->p_buffer[0] = PACKET_IS_SYNCPOINT;      // FIXME
 591
 592         op.packet = p_data->p_buffer;
 593         op.bytes  = p_data->i_size;
 594         op.b_o_s  = 0;
 595         op.e_o_s  = 0;
 596         if( p_stream->i_cat == AUDIO_ES )
 597         {
 598             /* number of sample from begining */
 599             op.granulepos = ( i_dts - p_sys->i_start_dts ) *
 600                                 p_stream->header.i_samples_per_unit / (int64_t)1000000;
 601         }
 602         else if( p_stream->i_cat == VIDEO_ES )
 603         {
 604             op.granulepos = ( i_dts - p_sys->i_start_dts ) / 1000;//p_stream->i_packet_no;
 605         }
 606         op.packetno = p_stream->i_packet_no++;
 607         ogg_stream_packetin( &p_stream->os, &op );
 608
 609         sout_BufferChain( &p_og,
 610                           OggStreamPageOut( p_mux,
 611                                             &p_stream->os,
 612                                             p_data->i_dts ) );
 613
 614         if( p_og )
 615         {
 616             OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
 617             p_stream->i_dts = -1;
 618             p_stream->i_length = 0;
 619
 620             msg_Dbg( p_mux, "writing data..." );
 621             sout_AccessOutWrite( p_mux->p_access, p_og );
 622
 623             p_og = NULL;
 624         }
 625         else
 626         {
 627             if( p_stream->i_dts < 0 )
 628             {
 629                 p_stream->i_dts = p_data->i_dts;
 630             }
 631             p_stream->i_length += p_data->i_length;
 632         }
 633
 634         sout_BufferDelete( p_mux->p_sout, p_data );
 635     }
 636
 637     return( VLC_SUCCESS );
 638 }
 639