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

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