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

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 VideoLAN
   5  * $Id: avi.c,v 1.16 2003/11/21 15:32:08 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 /* TODO: add OpenDML write support */
  28
  29 #include <stdlib.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/sout.h>
  34
  35 #include "codecs.h"
  36
  37 /*****************************************************************************
  38  * Module descriptor
  39  *****************************************************************************/
  40 static int  Open   ( vlc_object_t * );
  41 static void Close  ( vlc_object_t * );
  42
  43 vlc_module_begin();
  44     set_description( _("Avi muxer") );
  45     set_capability( "sout mux", 5 );
  46     add_shortcut( "avi" );
  47     set_callbacks( Open, Close );
  48 vlc_module_end();
  49
  50
  51 /*****************************************************************************
  52  * Local prototypes
  53  *****************************************************************************/
  54 static int  Capability(sout_mux_t *, int , void *, void * );
  55 static int  AddStream( sout_mux_t *, sout_input_t * );
  56 static int  DelStream( sout_mux_t *, sout_input_t * );
  57 static int  Mux      ( sout_mux_t * );
  58
  59 typedef struct avi_stream_s
  60 {
  61     int i_cat;
  62
  63     char fcc[4];
  64
  65     mtime_t i_duration;       // in µs
  66
  67     int     i_frames;        // total frame count
  68     int64_t i_totalsize;    // total stream size
  69
  70     float   f_fps;
  71     int     i_bitrate;
  72
  73     BITMAPINFOHEADER    *p_bih;
  74     WAVEFORMATEX        *p_wf;
  75
  76 } avi_stream_t;
  77
  78 typedef struct avi_idx1_entry_s
  79 {
  80     char     fcc[4];
  81     uint32_t i_flags;
  82     uint32_t i_pos;
  83     uint32_t i_length;
  84
  85 } avi_idx1_entry_t;
  86
  87 typedef struct avi_idx1_s
  88 {
  89     unsigned int i_entry_count;
  90     unsigned int i_entry_max;
  91
  92     avi_idx1_entry_t *entry;
  93 } avi_idx1_t;
  94
  95 struct sout_mux_sys_t
  96 {
  97     vlc_bool_t b_write_header;
  98
  99     int i_streams;
 100     int i_stream_video;
 101
 102     off_t i_movi_size;
 103     avi_stream_t stream[100];
 104
 105     avi_idx1_t idx1;
 106     off_t i_idx1_size;
 107
 108 };
 109
 110 // FIXME FIXME
 111 #define HDR_SIZE 10240
 112
 113 /* Flags in avih */
 114 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 115 #define AVIF_ISINTERLEAVED  0x00000100
 116 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 117
 118 /* Flags for index */
 119 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 120
 121
 122 static sout_buffer_t *avi_HeaderCreateRIFF( sout_mux_t * );
 123 static sout_buffer_t *avi_HeaderCreateidx1( sout_mux_t * );
 124
 125 static void SetFCC( uint8_t *p, char *fcc )
 126 {
 127     memcpy( p, fcc, 4 );
 128 }
 129
 130 static void SetDWLE( uint8_t *p, uint32_t i_dw )
 131 {
 132     p[3] = ( i_dw >> 24 )&0xff;
 133     p[2] = ( i_dw >> 16 )&0xff;
 134     p[1] = ( i_dw >>  8 )&0xff;
 135     p[0] = ( i_dw       )&0xff;
 136 }
 137
 138
 139 /*****************************************************************************
 140  * Open:
 141  *****************************************************************************/
 142 static int Open( vlc_object_t *p_this )
 143 {
 144     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 145     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 146
 147     msg_Dbg( p_mux, "AVI muxer opened" );
 148
 149     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 150     p_sys->i_streams = 0;
 151     p_sys->i_stream_video = -1;
 152     p_sys->i_movi_size = 0;
 153
 154     p_sys->idx1.i_entry_count = 0;
 155     p_sys->idx1.i_entry_max = 10000;
 156     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 157                                 sizeof( avi_idx1_entry_t ) );
 158     p_sys->b_write_header = VLC_TRUE;
 159
 160
 161     p_mux->pf_capacity  = Capability;
 162     p_mux->pf_addstream = AddStream;
 163     p_mux->pf_delstream = DelStream;
 164     p_mux->pf_mux       = Mux;
 165     p_mux->p_sys        = p_sys;
 166     p_mux->i_preheader  = 8;    /* (fourcc,length) header */
 167
 168     return VLC_SUCCESS;
 169 }
 170
 171 /*****************************************************************************
 172  * Close:
 173  *****************************************************************************/
 174 static void Close( vlc_object_t * p_this )
 175 {
 176     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 177     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 178
 179     sout_buffer_t       *p_hdr, *p_idx1;
 180     int                 i_stream;
 181
 182     msg_Dbg( p_mux, "AVI muxer closed" );
 183
 184     /* first create idx1 chunk (write at the end of the stream */
 185     p_idx1 = avi_HeaderCreateidx1( p_mux );
 186     p_sys->i_idx1_size = p_idx1->i_size;
 187     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 188
 189     /* calculate some value for headers creations */
 190     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 191     {
 192         avi_stream_t *p_stream;
 193
 194         p_stream = &p_sys->stream[i_stream];
 195
 196         p_stream->f_fps = 25;
 197         if( p_stream->i_duration > 0 )
 198         {
 199             p_stream->f_fps = (float)p_stream->i_frames /
 200                               ( (float)p_stream->i_duration /
 201                                 (float)1000000 );
 202         }
 203         p_stream->i_bitrate = 128 * 1024;
 204         if( p_stream->i_duration > 0 )
 205         {
 206             p_stream->i_bitrate =
 207                 8 * (uint64_t)1000000 *
 208                     (uint64_t)p_stream->i_totalsize /
 209                     (uint64_t)p_stream->i_duration;
 210         }
 211         msg_Info( p_mux, "stream[%d] duration:"I64Fd" totalsize:"I64Fd
 212                   " frames:%d fps:%f kb/s:%d",
 213                   i_stream,
 214                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 215                   p_stream->i_totalsize,
 216                   p_stream->i_frames,
 217                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 218     }
 219
 220     p_hdr = avi_HeaderCreateRIFF( p_mux );
 221     sout_AccessOutSeek( p_mux->p_access, 0 );
 222     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 223 }
 224
 225 static int Capability( sout_mux_t *p_mux, int i_query,
 226                        void *p_args, void *p_answer )
 227 {
 228    switch( i_query )
 229    {
 230         case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
 231             *(vlc_bool_t*)p_answer = VLC_FALSE;
 232             return( SOUT_MUX_CAP_ERR_OK );
 233         default:
 234             return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
 235    }
 236 }
 237
 238 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 239 {
 240     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 241     avi_stream_t    *p_stream;
 242
 243     if( p_sys->i_streams >= 100 )
 244     {
 245         msg_Err( p_mux, "too many streams" );
 246         return( -1 );
 247     }
 248
 249     msg_Dbg( p_mux, "adding input" );
 250     p_input->p_sys = malloc( sizeof( int ) );
 251
 252     *((int*)p_input->p_sys) = p_sys->i_streams;
 253     p_stream = &p_sys->stream[p_sys->i_streams];
 254
 255     switch( p_input->p_fmt->i_cat )
 256     {
 257         case AUDIO_ES:
 258             p_stream->i_cat = AUDIO_ES;
 259             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 260             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 261             p_stream->fcc[2] = 'w';
 262             p_stream->fcc[3] = 'b';
 263
 264             p_stream->p_bih = NULL;
 265
 266             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 267                                       p_input->p_fmt->i_extra );
 268 #define p_wf p_stream->p_wf
 269             p_wf->cbSize = p_input->p_fmt->i_extra;
 270             if( p_wf->cbSize > 0 )
 271             {
 272                 memcpy( &p_wf[1],
 273                         p_input->p_fmt->p_extra,
 274                         p_input->p_fmt->i_extra );
 275             }
 276             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 277             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 278             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 279             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 280             p_wf->wBitsPerSample = 0;
 281
 282             switch( p_input->p_fmt->i_codec )
 283             {
 284                 case VLC_FOURCC( 'a', '5', '2', ' ' ):
 285                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 286                     break;
 287                 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 288                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 289                     break;
 290                 case VLC_FOURCC( 'w', 'm', 'a', '1' ):
 291                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 292                     break;
 293                 case VLC_FOURCC( 'w', 'm', 'a', '2' ):
 294                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 295                     break;
 296                 case VLC_FOURCC( 'w', 'm', 'a', '3' ):
 297                     p_wf->wFormatTag = WAVE_FORMAT_WMA3;
 298                     break;
 299                     /* raw codec */
 300                 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 301                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 302                     p_wf->nBlockAlign= p_wf->nChannels;
 303                     p_wf->wBitsPerSample = 8;
 304                     break;
 305                 case VLC_FOURCC( 's', '1', '6', 'l' ):
 306                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 307                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 308                     p_wf->wBitsPerSample = 16;
 309                     break;
 310                 case VLC_FOURCC( 's', '2', '4', 'l' ):
 311                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 312                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 313                     p_wf->wBitsPerSample = 24;
 314                     break;
 315                 case VLC_FOURCC( 's', '3', '2', 'l' ):
 316                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 317                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 318                     p_wf->wBitsPerSample = 32;
 319                     break;
 320                 default:
 321                     return VLC_EGENERIC;
 322             }
 323 #undef p_wf
 324             break;
 325         case VIDEO_ES:
 326             p_stream->i_cat = VIDEO_ES;
 327             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 328             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 329             p_stream->fcc[2] = 'd';
 330             p_stream->fcc[3] = 'c';
 331             if( p_sys->i_stream_video < 0 )
 332             {
 333                 p_sys->i_stream_video = p_sys->i_streams;
 334             }
 335             p_stream->p_wf  = NULL;
 336             p_stream->p_bih = malloc( sizeof( BITMAPINFOHEADER ) +
 337                                       p_input->p_fmt->i_extra );
 338 #define p_bih p_stream->p_bih
 339             p_bih->biSize  = sizeof( BITMAPINFOHEADER ) +
 340                              p_input->p_fmt->i_extra;
 341             if( p_input->p_fmt->i_extra > 0 )
 342             {
 343                 memcpy( &p_bih[1],
 344                         p_input->p_fmt->p_extra,
 345                         p_input->p_fmt->i_extra );
 346             }
 347             p_bih->biWidth = p_input->p_fmt->video.i_width;
 348             p_bih->biHeight= p_input->p_fmt->video.i_height;
 349             p_bih->biPlanes= 1;
 350             p_bih->biBitCount       = 24;
 351             p_bih->biSizeImage      = 0;
 352             p_bih->biXPelsPerMeter  = 0;
 353             p_bih->biYPelsPerMeter  = 0;
 354             p_bih->biClrUsed        = 0;
 355             p_bih->biClrImportant   = 0;
 356             switch( p_input->p_fmt->i_codec )
 357             {
 358                 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 359                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 360                     break;
 361                 default:
 362                     p_bih->biCompression = p_input->p_fmt->i_codec;
 363                     break;
 364             }
 365 #undef p_bih
 366             break;
 367         default:
 368             return( VLC_EGENERIC );
 369     }
 370     p_stream->i_totalsize = 0;
 371     p_stream->i_frames    = 0;
 372     p_stream->i_duration  = 0;
 373
 374     /* fixed later */
 375     p_stream->f_fps = 25;
 376     p_stream->i_bitrate = 128 * 1024;
 377
 378     p_sys->i_streams++;
 379     return( VLC_SUCCESS );
 380 }
 381
 382 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 383 {
 384
 385     msg_Dbg( p_mux, "removing input" );
 386
 387     free( p_input->p_sys );
 388     return( 0 );
 389 }
 390
 391 static int Mux      ( sout_mux_t *p_mux )
 392 {
 393     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 394     avi_stream_t    *p_stream;
 395     int i_stream;
 396     int i;
 397
 398     if( p_sys->b_write_header )
 399     {
 400         sout_buffer_t *p_hdr;
 401
 402         msg_Dbg( p_mux, "writing header" );
 403
 404         p_hdr = avi_HeaderCreateRIFF( p_mux );
 405         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 406
 407         p_sys->b_write_header = VLC_FALSE;
 408     }
 409
 410     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 411     {
 412         int i_count;
 413         sout_fifo_t *p_fifo;
 414
 415         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 416         p_stream = &p_sys->stream[i_stream];
 417
 418         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 419         i_count = p_fifo->i_depth;
 420         while( i_count > 0 )
 421         {
 422             avi_idx1_entry_t *p_idx;
 423             sout_buffer_t *p_data;
 424
 425             p_data = sout_FifoGet( p_fifo );
 426
 427             p_stream->i_frames++;
 428             if( p_data->i_length < 0 )
 429             {
 430                 msg_Warn( p_mux, "argg length < 0 l" );
 431                 sout_BufferDelete( p_mux->p_sout, p_data );
 432                 i_count--;
 433                 continue;
 434             }
 435             p_stream->i_duration  += p_data->i_length;
 436             p_stream->i_totalsize += p_data->i_size;
 437
 438             /* add idx1 entry for this frame */
 439             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 440             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 441             p_idx->i_flags = AVIIF_KEYFRAME;
 442             p_idx->i_pos   = p_sys->i_movi_size + 4;
 443             p_idx->i_length= p_data->i_size;
 444             p_sys->idx1.i_entry_count++;
 445             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 446             {
 447                 p_sys->idx1.i_entry_max += 10000;
 448                 p_sys->idx1.entry = realloc( p_sys->idx1.entry,
 449                                              p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 450             }
 451
 452
 453             if( sout_BufferReallocFromPreHeader( p_mux->p_sout, p_data, 8 ) )
 454             {
 455                 /* there isn't enough data in preheader */
 456                 sout_buffer_t *p_hdr;
 457
 458                 p_hdr = sout_BufferNew( p_mux->p_sout, 8 );
 459                 SetFCC( p_hdr->p_buffer, p_stream->fcc );
 460                 SetDWLE( p_hdr->p_buffer + 4, p_data->i_size );
 461
 462                 sout_AccessOutWrite( p_mux->p_access, p_hdr );
 463                 p_sys->i_movi_size += p_hdr->i_size;
 464
 465             }
 466             else
 467             {
 468                 SetFCC( p_data->p_buffer, p_stream->fcc );
 469                 SetDWLE( p_data->p_buffer + 4, p_data->i_size - 8 );
 470             }
 471
 472             if( p_data->i_size & 0x01 )
 473             {
 474                 sout_BufferRealloc( p_mux->p_sout, p_data, p_data->i_size + 1 );
 475                 p_data->i_size += 1;
 476             }
 477
 478             p_sys->i_movi_size += p_data->i_size;
 479             sout_AccessOutWrite( p_mux->p_access, p_data );
 480
 481             i_count--;
 482         }
 483
 484     }
 485     return( 0 );
 486 }
 487
 488 /****************************************************************************/
 489 /****************************************************************************/
 490 /****************************************************************************/
 491 /****************************************************************************/
 492
 493 typedef struct buffer_out_s
 494 {
 495     int      i_buffer_size;
 496     int      i_buffer;
 497     uint8_t  *p_buffer;
 498
 499 } buffer_out_t;
 500
 501 static void bo_Init( buffer_out_t *p_bo, int i_size, uint8_t *p_buffer )
 502 {
 503     p_bo->i_buffer_size = i_size;
 504     p_bo->i_buffer = 0;
 505     p_bo->p_buffer = p_buffer;
 506 }
 507 static void bo_AddByte( buffer_out_t *p_bo, uint8_t i )
 508 {
 509     if( p_bo->i_buffer < p_bo->i_buffer_size )
 510     {
 511         p_bo->p_buffer[p_bo->i_buffer] = i;
 512     }
 513     p_bo->i_buffer++;
 514 }
 515 static void bo_AddWordLE( buffer_out_t *p_bo, uint16_t i )
 516 {
 517     bo_AddByte( p_bo, i &0xff );
 518     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 519 }
 520 static void bo_AddWordBE( buffer_out_t *p_bo, uint16_t i )
 521 {
 522     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 523     bo_AddByte( p_bo, i &0xff );
 524 }
 525 static void bo_AddDWordLE( buffer_out_t *p_bo, uint32_t i )
 526 {
 527     bo_AddWordLE( p_bo, i &0xffff );
 528     bo_AddWordLE( p_bo, ( ( i >> 16) &0xffff ) );
 529 }
 530 static void bo_AddDWordBE( buffer_out_t *p_bo, uint32_t i )
 531 {
 532     bo_AddWordBE( p_bo, ( ( i >> 16) &0xffff ) );
 533     bo_AddWordBE( p_bo, i &0xffff );
 534 }
 535 #if 0
 536 static void bo_AddLWordLE( buffer_out_t *p_bo, uint64_t i )
 537 {
 538     bo_AddDWordLE( p_bo, i &0xffffffff );
 539     bo_AddDWordLE( p_bo, ( ( i >> 32) &0xffffffff ) );
 540 }
 541 static void bo_AddLWordBE( buffer_out_t *p_bo, uint64_t i )
 542 {
 543     bo_AddDWordBE( p_bo, ( ( i >> 32) &0xffffffff ) );
 544     bo_AddDWordBE( p_bo, i &0xffffffff );
 545 }
 546 #endif
 547
 548 static void bo_AddFCC( buffer_out_t *p_bo, char *fcc )
 549 {
 550     bo_AddByte( p_bo, fcc[0] );
 551     bo_AddByte( p_bo, fcc[1] );
 552     bo_AddByte( p_bo, fcc[2] );
 553     bo_AddByte( p_bo, fcc[3] );
 554 }
 555
 556 static void bo_AddMem( buffer_out_t *p_bo, int i_size, uint8_t *p_mem )
 557 {
 558     int i;
 559
 560     for( i = 0; i < i_size; i++ )
 561     {
 562         bo_AddByte( p_bo, p_mem[i] );
 563     }
 564 }
 565
 566 /****************************************************************************
 567  ****************************************************************************
 568  **
 569  ** avi header generation
 570  **
 571  ****************************************************************************
 572  ****************************************************************************/
 573 #define AVI_BOX_ENTER( fcc ) \
 574     buffer_out_t _bo_sav_; \
 575     bo_AddFCC( p_bo, fcc ); \
 576     _bo_sav_ = *p_bo; \
 577     bo_AddDWordLE( p_bo, 0 )
 578
 579 #define AVI_BOX_ENTER_LIST( fcc ) \
 580     AVI_BOX_ENTER( "LIST" ); \
 581     bo_AddFCC( p_bo, fcc )
 582
 583 #define AVI_BOX_EXIT( i_err ) \
 584     if( p_bo->i_buffer&0x01 ) bo_AddByte( p_bo, 0 ); \
 585     bo_AddDWordLE( &_bo_sav_, p_bo->i_buffer - _bo_sav_.i_buffer - 4 ); \
 586     return( i_err );
 587
 588 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 589                                buffer_out_t *p_bo )
 590 {
 591     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 592     avi_stream_t    *p_video = NULL;
 593     int         i_stream;
 594     uint32_t    i_microsecperframe;
 595     int         i_maxbytespersec;
 596     int         i_totalframes;
 597     AVI_BOX_ENTER( "avih" );
 598
 599     if( p_sys->i_stream_video >= 0 )
 600     {
 601         p_video = &p_sys->stream[p_sys->i_stream_video];
 602         if( p_video->i_frames <= 0 )
 603         {
 604         //    p_video = NULL;
 605         }
 606     }
 607
 608     if( p_video )
 609     {
 610         i_microsecperframe =
 611             (uint32_t)( (float)1000000 /
 612                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 613         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 614     }
 615     else
 616     {
 617         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 618         i_microsecperframe = 0;
 619         i_totalframes = 0;
 620     }
 621
 622     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 623     {
 624         if( p_sys->stream[i_stream].i_duration > 0 )
 625         {
 626             i_maxbytespersec +=
 627                 p_sys->stream[p_sys->i_stream_video].i_totalsize /
 628                 p_sys->stream[p_sys->i_stream_video].i_duration;
 629         }
 630     }
 631
 632     bo_AddDWordLE( p_bo, i_microsecperframe );
 633     bo_AddDWordLE( p_bo, i_maxbytespersec );
 634     bo_AddDWordLE( p_bo, 0 );                   /* padding */
 635     bo_AddDWordLE( p_bo, AVIF_TRUSTCKTYPE |
 636                          AVIF_HASINDEX |
 637                          AVIF_ISINTERLEAVED );  /* flags */
 638     bo_AddDWordLE( p_bo, i_totalframes );
 639     bo_AddDWordLE( p_bo, 0 );                   /* initial frame */
 640     bo_AddDWordLE( p_bo, p_sys->i_streams );    /* streams count */
 641     bo_AddDWordLE( p_bo, 1024 * 1024 );         /* suggested buffer size */
 642     if( p_video )
 643     {
 644         bo_AddDWordLE( p_bo, p_video->p_bih->biWidth );
 645         bo_AddDWordLE( p_bo, p_video->p_bih->biHeight );
 646     }
 647     else
 648     {
 649         bo_AddDWordLE( p_bo, 0 );
 650         bo_AddDWordLE( p_bo, 0 );
 651     }
 652     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 653     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 654     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 655     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 656
 657     AVI_BOX_EXIT( 0 );
 658 }
 659 static int avi_HeaderAdd_strh( sout_mux_t   *p_mux,
 660                                buffer_out_t *p_bo,
 661                                avi_stream_t *p_stream )
 662 {
 663     AVI_BOX_ENTER( "strh" );
 664
 665     switch( p_stream->i_cat )
 666     {
 667         case VIDEO_ES:
 668             {
 669                 bo_AddFCC( p_bo, "vids" );
 670                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 671                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 672                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 673                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 674                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 675                 bo_AddDWordLE( p_bo, 1000 );/* scale */
 676                 bo_AddDWordLE( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 677                 bo_AddDWordLE( p_bo, 0 );   /* start */
 678                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 679                 bo_AddDWordLE( p_bo, 1024 * 1024 );
 680                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 681                 bo_AddDWordLE( p_bo, 0 );   /* samplesize */
 682                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 683                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 684                 bo_AddWordLE(  p_bo, p_stream->p_bih->biWidth );
 685                 bo_AddWordLE(  p_bo, p_stream->p_bih->biHeight );
 686             }
 687             break;
 688         case AUDIO_ES:
 689             {
 690                 int i_rate, i_scale, i_samplesize;
 691
 692                 i_samplesize = p_stream->p_wf->nBlockAlign;
 693                 if( i_samplesize > 1 )
 694                 {
 695                     i_scale = i_samplesize;
 696                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 697                 }
 698                 else
 699                 {
 700                     i_samplesize = 1;
 701                     i_scale = 1000;
 702                     i_rate = 1000 * p_stream->i_bitrate / 8;
 703                 }
 704                 bo_AddFCC( p_bo, "auds" );
 705                 bo_AddDWordLE( p_bo, 0 );   /* tag */
 706                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 707                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 708                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 709                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 710                 bo_AddDWordLE( p_bo, i_scale );/* scale */
 711                 bo_AddDWordLE( p_bo, i_rate );
 712                 bo_AddDWordLE( p_bo, 0 );   /* start */
 713                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 714                 bo_AddDWordLE( p_bo, 10 * 1024 );
 715                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 716                 bo_AddDWordLE( p_bo, i_samplesize );
 717                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 718                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 719                 bo_AddWordLE(  p_bo, 0 );
 720                 bo_AddWordLE(  p_bo, 0 );
 721             }
 722             break;
 723     }
 724
 725     AVI_BOX_EXIT( 0 );
 726 }
 727
 728 static int avi_HeaderAdd_strf( sout_mux_t *p_mux,
 729                                buffer_out_t *p_bo,
 730                                avi_stream_t *p_stream )
 731 {
 732     AVI_BOX_ENTER( "strf" );
 733
 734     switch( p_stream->i_cat )
 735     {
 736         case AUDIO_ES:
 737             bo_AddWordLE( p_bo, p_stream->p_wf->wFormatTag );
 738             bo_AddWordLE( p_bo, p_stream->p_wf->nChannels );
 739             bo_AddDWordLE( p_bo, p_stream->p_wf->nSamplesPerSec );
 740             bo_AddDWordLE( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 741             bo_AddWordLE( p_bo, p_stream->p_wf->nBlockAlign );
 742             bo_AddWordLE( p_bo, p_stream->p_wf->wBitsPerSample );
 743             bo_AddWordLE( p_bo, p_stream->p_wf->cbSize );
 744             bo_AddMem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 745             break;
 746         case VIDEO_ES:
 747             bo_AddDWordLE( p_bo, p_stream->p_bih->biSize );
 748             bo_AddDWordLE( p_bo, p_stream->p_bih->biWidth );
 749             bo_AddDWordLE( p_bo, p_stream->p_bih->biHeight );
 750             bo_AddWordLE( p_bo, p_stream->p_bih->biPlanes );
 751             bo_AddWordLE( p_bo, p_stream->p_bih->biBitCount );
 752             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 753             {
 754                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 755             }
 756             else
 757             {
 758                 bo_AddDWordLE( p_bo, p_stream->p_bih->biCompression );
 759             }
 760             bo_AddDWordLE( p_bo, p_stream->p_bih->biSizeImage );
 761             bo_AddDWordLE( p_bo, p_stream->p_bih->biXPelsPerMeter );
 762             bo_AddDWordLE( p_bo, p_stream->p_bih->biYPelsPerMeter );
 763             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrUsed );
 764             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrImportant );
 765             bo_AddMem( p_bo,
 766                        p_stream->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 767                        (uint8_t*)&p_stream->p_bih[1] );
 768             break;
 769     }
 770
 771     AVI_BOX_EXIT( 0 );
 772 }
 773
 774 static int avi_HeaderAdd_strl( sout_mux_t *p_mux,
 775                                buffer_out_t *p_bo,
 776                                avi_stream_t *p_stream )
 777 {
 778     AVI_BOX_ENTER_LIST( "strl" );
 779
 780     avi_HeaderAdd_strh( p_mux, p_bo, p_stream );
 781     avi_HeaderAdd_strf( p_mux, p_bo, p_stream );
 782
 783     AVI_BOX_EXIT( 0 );
 784 }
 785
 786 static sout_buffer_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 787 {
 788     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 789     sout_buffer_t       *p_hdr;
 790     int                 i_stream;
 791     int                 i_maxbytespersec;
 792     int                 i_junk;
 793     buffer_out_t        bo;
 794
 795     p_hdr = sout_BufferNew( p_mux->p_sout, HDR_SIZE );
 796     memset( p_hdr->p_buffer, 0, HDR_SIZE );
 797
 798     bo_Init( &bo, HDR_SIZE, p_hdr->p_buffer );
 799
 800     bo_AddFCC( &bo, "RIFF" );
 801     bo_AddDWordLE( &bo, p_sys->i_movi_size + HDR_SIZE - 8 + p_sys->i_idx1_size );
 802     bo_AddFCC( &bo, "AVI " );
 803
 804     bo_AddFCC( &bo, "LIST" );
 805     bo_AddDWordLE( &bo, HDR_SIZE - 8);
 806     bo_AddFCC( &bo, "hdrl" );
 807
 808     avi_HeaderAdd_avih( p_mux, &bo );
 809     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 810     {
 811         avi_HeaderAdd_strl( p_mux, &bo, &p_sys->stream[i_stream] );
 812     }
 813
 814     i_junk = HDR_SIZE - bo.i_buffer - 8 - 12;
 815     bo_AddFCC( &bo, "JUNK" );
 816     bo_AddDWordLE( &bo, i_junk );
 817
 818     bo.i_buffer += i_junk;
 819     bo_AddFCC( &bo, "LIST" );
 820     bo_AddDWordLE( &bo, p_sys->i_movi_size + 4 );
 821     bo_AddFCC( &bo, "movi" );
 822
 823     return( p_hdr );
 824 }
 825
 826 static sout_buffer_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 827 {
 828     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 829     sout_buffer_t       *p_idx1;
 830     uint32_t            i_idx1_size;
 831     unsigned int        i;
 832     buffer_out_t        bo;
 833
 834     i_idx1_size = 16 * p_sys->idx1.i_entry_count;
 835
 836     p_idx1 = sout_BufferNew( p_mux->p_sout, i_idx1_size + 8 );
 837     memset( p_idx1->p_buffer, 0, i_idx1_size );
 838
 839     bo_Init( &bo, i_idx1_size, p_idx1->p_buffer );
 840     bo_AddFCC( &bo, "idx1" );
 841     bo_AddDWordLE( &bo, i_idx1_size );
 842
 843     for( i = 0; i < p_sys->idx1.i_entry_count; i++ )
 844     {
 845         bo_AddFCC( &bo, p_sys->idx1.entry[i].fcc );
 846         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_flags );
 847         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_pos );
 848         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_length );
 849     }
 850
 851     return( p_idx1 );
 852 }
 853