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

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 the VideoLAN team
   5  * $Id$
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 /* TODO: add OpenDML write support */
  28
  29 #include <stdlib.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc_sout.h>
  33 #include <vlc_block.h>
  34 #include <vlc_codecs.h>
  35
  36 /*****************************************************************************
  37  * Module descriptor
  38  *****************************************************************************/
  39 static int  Open   ( vlc_object_t * );
  40 static void Close  ( vlc_object_t * );
  41
  42 vlc_module_begin();
  43     set_description( _("AVI muxer") );
  44     set_category( CAT_SOUT );
  45     set_subcategory( SUBCAT_SOUT_MUX );
  46     set_capability( "sout mux", 5 );
  47     add_shortcut( "avi" );
  48     set_callbacks( Open, Close );
  49 vlc_module_end();
  50
  51
  52 /*****************************************************************************
  53  * Local prototypes
  54  *****************************************************************************/
  55 static int Control( sout_mux_t *, int, va_list );
  56 static int AddStream( sout_mux_t *, sout_input_t * );
  57 static int DelStream( sout_mux_t *, sout_input_t * );
  58 static int Mux      ( sout_mux_t * );
  59
  60 typedef struct avi_stream_s
  61 {
  62     int i_cat;
  63
  64     char fcc[4];
  65
  66     mtime_t i_duration;       // in µs
  67
  68     int     i_frames;        // total frame count
  69     int64_t i_totalsize;    // total stream size
  70
  71     float   f_fps;
  72     int     i_bitrate;
  73
  74     BITMAPINFOHEADER    *p_bih;
  75     WAVEFORMATEX        *p_wf;
  76
  77 } avi_stream_t;
  78
  79 typedef struct avi_idx1_entry_s
  80 {
  81     char     fcc[4];
  82     uint32_t i_flags;
  83     uint32_t i_pos;
  84     uint32_t i_length;
  85
  86 } avi_idx1_entry_t;
  87
  88 typedef struct avi_idx1_s
  89 {
  90     unsigned int i_entry_count;
  91     unsigned int i_entry_max;
  92
  93     avi_idx1_entry_t *entry;
  94 } avi_idx1_t;
  95
  96 struct sout_mux_sys_t
  97 {
  98     vlc_bool_t b_write_header;
  99
 100     int i_streams;
 101     int i_stream_video;
 102
 103     off_t i_movi_size;
 104     avi_stream_t stream[100];
 105
 106     avi_idx1_t idx1;
 107     off_t i_idx1_size;
 108
 109 };
 110
 111 // FIXME FIXME
 112 #define HDR_SIZE 10240
 113
 114 /* Flags in avih */
 115 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 116 #define AVIF_ISINTERLEAVED  0x00000100
 117 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 118
 119 /* Flags for index */
 120 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 121
 122
 123 static block_t *avi_HeaderCreateRIFF( sout_mux_t * );
 124 static block_t *avi_HeaderCreateidx1( sout_mux_t * );
 125
 126 static void SetFCC( uint8_t *p, char *fcc )
 127 {
 128     memcpy( p, fcc, 4 );
 129 }
 130
 131 /*****************************************************************************
 132  * Open:
 133  *****************************************************************************/
 134 static int Open( vlc_object_t *p_this )
 135 {
 136     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 137     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 138
 139     msg_Dbg( p_mux, "AVI muxer opened" );
 140
 141     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 142     p_sys->i_streams = 0;
 143     p_sys->i_stream_video = -1;
 144     p_sys->i_movi_size = 0;
 145
 146     p_sys->idx1.i_entry_count = 0;
 147     p_sys->idx1.i_entry_max = 10000;
 148     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 149                                 sizeof( avi_idx1_entry_t ) );
 150     p_sys->b_write_header = VLC_TRUE;
 151
 152
 153     p_mux->pf_control   = Control;
 154     p_mux->pf_addstream = AddStream;
 155     p_mux->pf_delstream = DelStream;
 156     p_mux->pf_mux       = Mux;
 157     p_mux->p_sys        = p_sys;
 158
 159     return VLC_SUCCESS;
 160 }
 161
 162 /*****************************************************************************
 163  * Close:
 164  *****************************************************************************/
 165 static void Close( vlc_object_t * p_this )
 166 {
 167     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 168     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 169
 170     block_t       *p_hdr, *p_idx1;
 171     int                 i_stream;
 172
 173     msg_Dbg( p_mux, "AVI muxer closed" );
 174
 175     /* first create idx1 chunk (write at the end of the stream */
 176     p_idx1 = avi_HeaderCreateidx1( p_mux );
 177     p_sys->i_idx1_size = p_idx1->i_buffer;
 178     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 179
 180     /* calculate some value for headers creations */
 181     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 182     {
 183         avi_stream_t *p_stream;
 184
 185         p_stream = &p_sys->stream[i_stream];
 186
 187         p_stream->f_fps = 25;
 188         if( p_stream->i_duration > 0 )
 189         {
 190             p_stream->f_fps = (float)p_stream->i_frames /
 191                               ( (float)p_stream->i_duration /
 192                                 (float)1000000 );
 193         }
 194         p_stream->i_bitrate = 128 * 1024;
 195         if( p_stream->i_duration > 0 )
 196         {
 197             p_stream->i_bitrate =
 198                 8 * (uint64_t)1000000 *
 199                     (uint64_t)p_stream->i_totalsize /
 200                     (uint64_t)p_stream->i_duration;
 201         }
 202         msg_Info( p_mux, "stream[%d] duration:"I64Fd" totalsize:"I64Fd
 203                   " frames:%d fps:%f kb/s:%d",
 204                   i_stream,
 205                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 206                   p_stream->i_totalsize,
 207                   p_stream->i_frames,
 208                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 209     }
 210
 211     p_hdr = avi_HeaderCreateRIFF( p_mux );
 212     sout_AccessOutSeek( p_mux->p_access, 0 );
 213     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 214 }
 215
 216 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 217 {
 218     vlc_bool_t *pb_bool;
 219     char **ppsz;
 220
 221    switch( i_query )
 222    {
 223        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 224            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 225            *pb_bool = VLC_FALSE;
 226            return VLC_SUCCESS;
 227
 228        case MUX_GET_ADD_STREAM_WAIT:
 229            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 230            *pb_bool = VLC_TRUE;
 231            return VLC_SUCCESS;
 232
 233        case MUX_GET_MIME:
 234            ppsz = (char**)va_arg( args, char ** );
 235            *ppsz = strdup( "video/avi" );
 236            return VLC_SUCCESS;
 237
 238         default:
 239             return VLC_EGENERIC;
 240    }
 241 }
 242
 243 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 244 {
 245     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 246     avi_stream_t    *p_stream;
 247
 248     if( p_sys->i_streams >= 100 )
 249     {
 250         msg_Err( p_mux, "too many streams" );
 251         return( -1 );
 252     }
 253
 254     msg_Dbg( p_mux, "adding input" );
 255     p_input->p_sys = malloc( sizeof( int ) );
 256
 257     *((int*)p_input->p_sys) = p_sys->i_streams;
 258     p_stream = &p_sys->stream[p_sys->i_streams];
 259
 260     switch( p_input->p_fmt->i_cat )
 261     {
 262         case AUDIO_ES:
 263             p_stream->i_cat = AUDIO_ES;
 264             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 265             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 266             p_stream->fcc[2] = 'w';
 267             p_stream->fcc[3] = 'b';
 268
 269             p_stream->p_bih = NULL;
 270
 271             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 272                                       p_input->p_fmt->i_extra );
 273 #define p_wf p_stream->p_wf
 274             p_wf->cbSize = p_input->p_fmt->i_extra;
 275             if( p_wf->cbSize > 0 )
 276             {
 277                 memcpy( &p_wf[1],
 278                         p_input->p_fmt->p_extra,
 279                         p_input->p_fmt->i_extra );
 280             }
 281             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 282             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 283             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 284             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 285             p_wf->wBitsPerSample = 0;
 286
 287             switch( p_input->p_fmt->i_codec )
 288             {
 289                 case VLC_FOURCC( 'a', '5', '2', ' ' ):
 290                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 291                     break;
 292                 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 293                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 294                     break;
 295                 case VLC_FOURCC( 'w', 'm', 'a', '1' ):
 296                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 297                     break;
 298                 case VLC_FOURCC( 'w', 'm', 'a', ' ' ):
 299                 case VLC_FOURCC( 'w', 'm', 'a', '2' ):
 300                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 301                     break;
 302                 case VLC_FOURCC( 'w', 'm', 'a', 'p' ):
 303                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 304                     break;
 305                 case VLC_FOURCC( 'w', 'm', 'a', 'l' ):
 306                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 307                     break;
 308                     /* raw codec */
 309                 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 310                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 311                     p_wf->nBlockAlign= p_wf->nChannels;
 312                     p_wf->wBitsPerSample = 8;
 313                     break;
 314                 case VLC_FOURCC( 's', '1', '6', 'l' ):
 315                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 316                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 317                     p_wf->wBitsPerSample = 16;
 318                     break;
 319                 case VLC_FOURCC( 's', '2', '4', 'l' ):
 320                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 321                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 322                     p_wf->wBitsPerSample = 24;
 323                     break;
 324                 case VLC_FOURCC( 's', '3', '2', 'l' ):
 325                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 326                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 327                     p_wf->wBitsPerSample = 32;
 328                     break;
 329                 default:
 330                     return VLC_EGENERIC;
 331             }
 332 #undef p_wf
 333             break;
 334         case VIDEO_ES:
 335             p_stream->i_cat = VIDEO_ES;
 336             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 337             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 338             p_stream->fcc[2] = 'd';
 339             p_stream->fcc[3] = 'c';
 340             if( p_sys->i_stream_video < 0 )
 341             {
 342                 p_sys->i_stream_video = p_sys->i_streams;
 343             }
 344             p_stream->p_wf  = NULL;
 345             p_stream->p_bih = malloc( sizeof( BITMAPINFOHEADER ) +
 346                                       p_input->p_fmt->i_extra );
 347 #define p_bih p_stream->p_bih
 348             p_bih->biSize  = sizeof( BITMAPINFOHEADER ) +
 349                              p_input->p_fmt->i_extra;
 350             if( p_input->p_fmt->i_extra > 0 )
 351             {
 352                 memcpy( &p_bih[1],
 353                         p_input->p_fmt->p_extra,
 354                         p_input->p_fmt->i_extra );
 355             }
 356             p_bih->biWidth = p_input->p_fmt->video.i_width;
 357             p_bih->biHeight= p_input->p_fmt->video.i_height;
 358             p_bih->biPlanes= 1;
 359             p_bih->biBitCount       = 24;
 360             p_bih->biSizeImage      = 0;
 361             p_bih->biXPelsPerMeter  = 0;
 362             p_bih->biYPelsPerMeter  = 0;
 363             p_bih->biClrUsed        = 0;
 364             p_bih->biClrImportant   = 0;
 365             switch( p_input->p_fmt->i_codec )
 366             {
 367                 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 368                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 369                     break;
 370                 default:
 371                     p_bih->biCompression = p_input->p_fmt->i_codec;
 372                     break;
 373             }
 374 #undef p_bih
 375             break;
 376         default:
 377             return( VLC_EGENERIC );
 378     }
 379     p_stream->i_totalsize = 0;
 380     p_stream->i_frames    = 0;
 381     p_stream->i_duration  = 0;
 382
 383     /* fixed later */
 384     p_stream->f_fps = 25;
 385     p_stream->i_bitrate = 128 * 1024;
 386
 387     p_sys->i_streams++;
 388     return( VLC_SUCCESS );
 389 }
 390
 391 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 392 {
 393
 394     msg_Dbg( p_mux, "removing input" );
 395
 396     free( p_input->p_sys );
 397     return( 0 );
 398 }
 399
 400 static int Mux      ( sout_mux_t *p_mux )
 401 {
 402     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 403     avi_stream_t    *p_stream;
 404     int i_stream;
 405     int i;
 406
 407     if( p_sys->b_write_header )
 408     {
 409         block_t *p_hdr;
 410
 411         msg_Dbg( p_mux, "writing header" );
 412
 413         p_hdr = avi_HeaderCreateRIFF( p_mux );
 414         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 415
 416         p_sys->b_write_header = VLC_FALSE;
 417     }
 418
 419     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 420     {
 421         int i_count;
 422         block_fifo_t *p_fifo;
 423
 424         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 425         p_stream = &p_sys->stream[i_stream];
 426
 427         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 428         i_count = p_fifo->i_depth;
 429         while( i_count > 1 )
 430         {
 431             avi_idx1_entry_t *p_idx;
 432             block_t *p_data;
 433
 434             p_data = block_FifoGet( p_fifo );
 435             if( p_fifo->i_depth > 0 )
 436             {
 437                 block_t *p_next = block_FifoShow( p_fifo );
 438                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 439             }
 440
 441             p_stream->i_frames++;
 442             if( p_data->i_length < 0 )
 443             {
 444                 msg_Warn( p_mux, "argg length < 0 l" );
 445                 block_Release( p_data );
 446                 i_count--;
 447                 continue;
 448             }
 449             p_stream->i_duration  += p_data->i_length;
 450             p_stream->i_totalsize += p_data->i_buffer;
 451
 452             /* add idx1 entry for this frame */
 453             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 454             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 455             p_idx->i_flags = AVIIF_KEYFRAME;
 456             p_idx->i_pos   = p_sys->i_movi_size + 4;
 457             p_idx->i_length= p_data->i_buffer;
 458             p_sys->idx1.i_entry_count++;
 459             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 460             {
 461                 p_sys->idx1.i_entry_max += 10000;
 462                 p_sys->idx1.entry = realloc( p_sys->idx1.entry,
 463                                              p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 464             }
 465
 466             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 467             if( p_data )
 468             {
 469                 SetFCC( p_data->p_buffer, p_stream->fcc );
 470                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 471
 472                 if( p_data->i_buffer & 0x01 )
 473                 {
 474                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 475                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 476                 }
 477
 478                 p_sys->i_movi_size += p_data->i_buffer;
 479                 sout_AccessOutWrite( p_mux->p_access, p_data );
 480             }
 481
 482             i_count--;
 483         }
 484
 485     }
 486     return( 0 );
 487 }
 488
 489 /****************************************************************************/
 490 /****************************************************************************/
 491 /****************************************************************************/
 492 /****************************************************************************/
 493
 494 typedef struct buffer_out_s
 495 {
 496     int      i_buffer_size;
 497     int      i_buffer;
 498     uint8_t  *p_buffer;
 499
 500 } buffer_out_t;
 501
 502 static void bo_Init( buffer_out_t *p_bo, int i_size, uint8_t *p_buffer )
 503 {
 504     p_bo->i_buffer_size = i_size;
 505     p_bo->i_buffer = 0;
 506     p_bo->p_buffer = p_buffer;
 507 }
 508 static void bo_AddByte( buffer_out_t *p_bo, uint8_t i )
 509 {
 510     if( p_bo->i_buffer < p_bo->i_buffer_size )
 511     {
 512         p_bo->p_buffer[p_bo->i_buffer] = i;
 513     }
 514     p_bo->i_buffer++;
 515 }
 516 static void bo_AddWordLE( buffer_out_t *p_bo, uint16_t i )
 517 {
 518     bo_AddByte( p_bo, i &0xff );
 519     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 520 }
 521 static void bo_AddWordBE( buffer_out_t *p_bo, uint16_t i )
 522 {
 523     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 524     bo_AddByte( p_bo, i &0xff );
 525 }
 526 static void bo_AddDWordLE( buffer_out_t *p_bo, uint32_t i )
 527 {
 528     bo_AddWordLE( p_bo, i &0xffff );
 529     bo_AddWordLE( p_bo, ( ( i >> 16) &0xffff ) );
 530 }
 531 static void bo_AddDWordBE( buffer_out_t *p_bo, uint32_t i )
 532 {
 533     bo_AddWordBE( p_bo, ( ( i >> 16) &0xffff ) );
 534     bo_AddWordBE( p_bo, i &0xffff );
 535 }
 536 #if 0
 537 static void bo_AddLWordLE( buffer_out_t *p_bo, uint64_t i )
 538 {
 539     bo_AddDWordLE( p_bo, i &0xffffffff );
 540     bo_AddDWordLE( p_bo, ( ( i >> 32) &0xffffffff ) );
 541 }
 542 static void bo_AddLWordBE( buffer_out_t *p_bo, uint64_t i )
 543 {
 544     bo_AddDWordBE( p_bo, ( ( i >> 32) &0xffffffff ) );
 545     bo_AddDWordBE( p_bo, i &0xffffffff );
 546 }
 547 #endif
 548
 549 static void bo_AddFCC( buffer_out_t *p_bo, char *fcc )
 550 {
 551     bo_AddByte( p_bo, fcc[0] );
 552     bo_AddByte( p_bo, fcc[1] );
 553     bo_AddByte( p_bo, fcc[2] );
 554     bo_AddByte( p_bo, fcc[3] );
 555 }
 556
 557 static void bo_AddMem( buffer_out_t *p_bo, int i_size, uint8_t *p_mem )
 558 {
 559     int i;
 560
 561     for( i = 0; i < i_size; i++ )
 562     {
 563         bo_AddByte( p_bo, p_mem[i] );
 564     }
 565 }
 566
 567 /****************************************************************************
 568  ****************************************************************************
 569  **
 570  ** avi header generation
 571  **
 572  ****************************************************************************
 573  ****************************************************************************/
 574 #define AVI_BOX_ENTER( fcc ) \
 575     buffer_out_t _bo_sav_; \
 576     bo_AddFCC( p_bo, fcc ); \
 577     _bo_sav_ = *p_bo; \
 578     bo_AddDWordLE( p_bo, 0 )
 579
 580 #define AVI_BOX_ENTER_LIST( fcc ) \
 581     AVI_BOX_ENTER( "LIST" ); \
 582     bo_AddFCC( p_bo, fcc )
 583
 584 #define AVI_BOX_EXIT( i_err ) \
 585     if( p_bo->i_buffer&0x01 ) bo_AddByte( p_bo, 0 ); \
 586     bo_AddDWordLE( &_bo_sav_, p_bo->i_buffer - _bo_sav_.i_buffer - 4 ); \
 587     return( i_err );
 588
 589 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 590                                buffer_out_t *p_bo )
 591 {
 592     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 593     avi_stream_t    *p_video = NULL;
 594     int         i_stream;
 595     uint32_t    i_microsecperframe;
 596     int         i_maxbytespersec;
 597     int         i_totalframes;
 598     AVI_BOX_ENTER( "avih" );
 599
 600     if( p_sys->i_stream_video >= 0 )
 601     {
 602         p_video = &p_sys->stream[p_sys->i_stream_video];
 603         if( p_video->i_frames <= 0 )
 604         {
 605         //    p_video = NULL;
 606         }
 607     }
 608
 609     if( p_video )
 610     {
 611         i_microsecperframe =
 612             (uint32_t)( (float)1000000 /
 613                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 614         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 615     }
 616     else
 617     {
 618         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 619         i_microsecperframe = 0;
 620         i_totalframes = 0;
 621     }
 622
 623     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 624     {
 625         if( p_sys->stream[i_stream].i_duration > 0 )
 626         {
 627             i_maxbytespersec +=
 628                 p_sys->stream[i_stream].i_totalsize /
 629                 p_sys->stream[i_stream].i_duration;
 630         }
 631     }
 632
 633     bo_AddDWordLE( p_bo, i_microsecperframe );
 634     bo_AddDWordLE( p_bo, i_maxbytespersec );
 635     bo_AddDWordLE( p_bo, 0 );                   /* padding */
 636     bo_AddDWordLE( p_bo, AVIF_TRUSTCKTYPE |
 637                          AVIF_HASINDEX |
 638                          AVIF_ISINTERLEAVED );  /* flags */
 639     bo_AddDWordLE( p_bo, i_totalframes );
 640     bo_AddDWordLE( p_bo, 0 );                   /* initial frame */
 641     bo_AddDWordLE( p_bo, p_sys->i_streams );    /* streams count */
 642     bo_AddDWordLE( p_bo, 1024 * 1024 );         /* suggested buffer size */
 643     if( p_video )
 644     {
 645         bo_AddDWordLE( p_bo, p_video->p_bih->biWidth );
 646         bo_AddDWordLE( p_bo, p_video->p_bih->biHeight );
 647     }
 648     else
 649     {
 650         bo_AddDWordLE( p_bo, 0 );
 651         bo_AddDWordLE( p_bo, 0 );
 652     }
 653     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 654     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 655     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 656     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 657
 658     AVI_BOX_EXIT( 0 );
 659 }
 660 static int avi_HeaderAdd_strh( sout_mux_t   *p_mux,
 661                                buffer_out_t *p_bo,
 662                                avi_stream_t *p_stream )
 663 {
 664     AVI_BOX_ENTER( "strh" );
 665
 666     switch( p_stream->i_cat )
 667     {
 668         case VIDEO_ES:
 669             {
 670                 bo_AddFCC( p_bo, "vids" );
 671                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 672                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 673                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 674                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 675                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 676                 bo_AddDWordLE( p_bo, 1000 );/* scale */
 677                 bo_AddDWordLE( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 678                 bo_AddDWordLE( p_bo, 0 );   /* start */
 679                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 680                 bo_AddDWordLE( p_bo, 1024 * 1024 );
 681                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 682                 bo_AddDWordLE( p_bo, 0 );   /* samplesize */
 683                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 684                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 685                 bo_AddWordLE(  p_bo, p_stream->p_bih->biWidth );
 686                 bo_AddWordLE(  p_bo, p_stream->p_bih->biHeight );
 687             }
 688             break;
 689         case AUDIO_ES:
 690             {
 691                 int i_rate, i_scale, i_samplesize;
 692
 693                 i_samplesize = p_stream->p_wf->nBlockAlign;
 694                 if( i_samplesize > 1 )
 695                 {
 696                     i_scale = i_samplesize;
 697                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 698                 }
 699                 else
 700                 {
 701                     i_samplesize = 1;
 702                     i_scale = 1000;
 703                     i_rate = 1000 * p_stream->i_bitrate / 8;
 704                 }
 705                 bo_AddFCC( p_bo, "auds" );
 706                 bo_AddDWordLE( p_bo, 0 );   /* tag */
 707                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 708                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 709                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 710                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 711                 bo_AddDWordLE( p_bo, i_scale );/* scale */
 712                 bo_AddDWordLE( p_bo, i_rate );
 713                 bo_AddDWordLE( p_bo, 0 );   /* start */
 714                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 715                 bo_AddDWordLE( p_bo, 10 * 1024 );
 716                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 717                 bo_AddDWordLE( p_bo, i_samplesize );
 718                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 719                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 720                 bo_AddWordLE(  p_bo, 0 );
 721                 bo_AddWordLE(  p_bo, 0 );
 722             }
 723             break;
 724     }
 725
 726     AVI_BOX_EXIT( 0 );
 727 }
 728
 729 static int avi_HeaderAdd_strf( sout_mux_t *p_mux,
 730                                buffer_out_t *p_bo,
 731                                avi_stream_t *p_stream )
 732 {
 733     AVI_BOX_ENTER( "strf" );
 734
 735     switch( p_stream->i_cat )
 736     {
 737         case AUDIO_ES:
 738             bo_AddWordLE( p_bo, p_stream->p_wf->wFormatTag );
 739             bo_AddWordLE( p_bo, p_stream->p_wf->nChannels );
 740             bo_AddDWordLE( p_bo, p_stream->p_wf->nSamplesPerSec );
 741             bo_AddDWordLE( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 742             bo_AddWordLE( p_bo, p_stream->p_wf->nBlockAlign );
 743             bo_AddWordLE( p_bo, p_stream->p_wf->wBitsPerSample );
 744             bo_AddWordLE( p_bo, p_stream->p_wf->cbSize );
 745             bo_AddMem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 746             break;
 747         case VIDEO_ES:
 748             bo_AddDWordLE( p_bo, p_stream->p_bih->biSize );
 749             bo_AddDWordLE( p_bo, p_stream->p_bih->biWidth );
 750             bo_AddDWordLE( p_bo, p_stream->p_bih->biHeight );
 751             bo_AddWordLE( p_bo, p_stream->p_bih->biPlanes );
 752             bo_AddWordLE( p_bo, p_stream->p_bih->biBitCount );
 753             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 754             {
 755                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 756             }
 757             else
 758             {
 759                 bo_AddDWordLE( p_bo, p_stream->p_bih->biCompression );
 760             }
 761             bo_AddDWordLE( p_bo, p_stream->p_bih->biSizeImage );
 762             bo_AddDWordLE( p_bo, p_stream->p_bih->biXPelsPerMeter );
 763             bo_AddDWordLE( p_bo, p_stream->p_bih->biYPelsPerMeter );
 764             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrUsed );
 765             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrImportant );
 766             bo_AddMem( p_bo,
 767                        p_stream->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 768                        (uint8_t*)&p_stream->p_bih[1] );
 769             break;
 770     }
 771
 772     AVI_BOX_EXIT( 0 );
 773 }
 774
 775 static int avi_HeaderAdd_strl( sout_mux_t *p_mux,
 776                                buffer_out_t *p_bo,
 777                                avi_stream_t *p_stream )
 778 {
 779     AVI_BOX_ENTER_LIST( "strl" );
 780
 781     avi_HeaderAdd_strh( p_mux, p_bo, p_stream );
 782     avi_HeaderAdd_strf( p_mux, p_bo, p_stream );
 783
 784     AVI_BOX_EXIT( 0 );
 785 }
 786
 787 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 788 {
 789     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 790     block_t       *p_hdr;
 791     int                 i_stream;
 792     int                 i_maxbytespersec;
 793     int                 i_junk;
 794     buffer_out_t        bo;
 795
 796     p_hdr = block_New( p_mux, HDR_SIZE );
 797     memset( p_hdr->p_buffer, 0, HDR_SIZE );
 798
 799     bo_Init( &bo, HDR_SIZE, p_hdr->p_buffer );
 800
 801     bo_AddFCC( &bo, "RIFF" );
 802     bo_AddDWordLE( &bo, p_sys->i_movi_size + HDR_SIZE - 8 + p_sys->i_idx1_size );
 803     bo_AddFCC( &bo, "AVI " );
 804
 805     bo_AddFCC( &bo, "LIST" );
 806     bo_AddDWordLE( &bo, HDR_SIZE - 8);
 807     bo_AddFCC( &bo, "hdrl" );
 808
 809     avi_HeaderAdd_avih( p_mux, &bo );
 810     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 811     {
 812         avi_HeaderAdd_strl( p_mux, &bo, &p_sys->stream[i_stream] );
 813     }
 814
 815     i_junk = HDR_SIZE - bo.i_buffer - 8 - 12;
 816     bo_AddFCC( &bo, "JUNK" );
 817     bo_AddDWordLE( &bo, i_junk );
 818
 819     bo.i_buffer += i_junk;
 820     bo_AddFCC( &bo, "LIST" );
 821     bo_AddDWordLE( &bo, p_sys->i_movi_size + 4 );
 822     bo_AddFCC( &bo, "movi" );
 823
 824     return( p_hdr );
 825 }
 826
 827 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 828 {
 829     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 830     block_t       *p_idx1;
 831     uint32_t            i_idx1_size;
 832     unsigned int        i;
 833     buffer_out_t        bo;
 834
 835     i_idx1_size = 16 * p_sys->idx1.i_entry_count;
 836
 837     p_idx1 = block_New( p_mux, i_idx1_size + 8 );
 838     memset( p_idx1->p_buffer, 0, i_idx1_size );
 839
 840     bo_Init( &bo, i_idx1_size, p_idx1->p_buffer );
 841     bo_AddFCC( &bo, "idx1" );
 842     bo_AddDWordLE( &bo, i_idx1_size );
 843
 844     for( i = 0; i < p_sys->idx1.i_entry_count; i++ )
 845     {
 846         bo_AddFCC( &bo, p_sys->idx1.entry[i].fcc );
 847         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_flags );
 848         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_pos );
 849         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_length );
 850     }
 851
 852     return( p_idx1 );
 853 }
 854