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

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 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
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38 #include <vlc_codecs.h>
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 static int  Open   ( vlc_object_t * );
  44 static void Close  ( vlc_object_t * );
  45
  46 vlc_module_begin ()
  47     set_description( N_("AVI muxer") )
  48     set_category( CAT_SOUT )
  49     set_subcategory( SUBCAT_SOUT_MUX )
  50     set_capability( "sout mux", 5 )
  51     add_shortcut( "avi" )
  52     set_callbacks( Open, Close )
  53 vlc_module_end ()
  54
  55
  56 /*****************************************************************************
  57  * Local prototypes
  58  *****************************************************************************/
  59 static int Control( sout_mux_t *, int, va_list );
  60 static int AddStream( sout_mux_t *, sout_input_t * );
  61 static int DelStream( sout_mux_t *, sout_input_t * );
  62 static int Mux      ( sout_mux_t * );
  63
  64 typedef struct avi_stream_s
  65 {
  66     int i_cat;
  67
  68     char fcc[4];
  69
  70     mtime_t i_duration;       // in µs
  71
  72     int     i_frames;        // total frame count
  73     int64_t i_totalsize;    // total stream size
  74
  75     float   f_fps;
  76     int     i_bitrate;
  77
  78     VLC_BITMAPINFOHEADER    *p_bih;
  79     WAVEFORMATEX            *p_wf;
  80
  81 } avi_stream_t;
  82
  83 typedef struct avi_idx1_entry_s
  84 {
  85     char     fcc[4];
  86     uint32_t i_flags;
  87     uint32_t i_pos;
  88     uint32_t i_length;
  89
  90 } avi_idx1_entry_t;
  91
  92 typedef struct avi_idx1_s
  93 {
  94     unsigned int i_entry_count;
  95     unsigned int i_entry_max;
  96
  97     avi_idx1_entry_t *entry;
  98 } avi_idx1_t;
  99
 100 struct sout_mux_sys_t
 101 {
 102     bool b_write_header;
 103
 104     int i_streams;
 105     int i_stream_video;
 106
 107     off_t i_movi_size;
 108     avi_stream_t stream[100];
 109
 110     avi_idx1_t idx1;
 111     off_t i_idx1_size;
 112
 113 };
 114
 115 // FIXME FIXME
 116 #define HDR_SIZE 10240
 117
 118 /* Flags in avih */
 119 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 120 #define AVIF_ISINTERLEAVED  0x00000100
 121 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 122
 123 /* Flags for index */
 124 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 125
 126
 127 static block_t *avi_HeaderCreateRIFF( sout_mux_t * );
 128 static block_t *avi_HeaderCreateidx1( sout_mux_t * );
 129
 130 static void SetFCC( uint8_t *p, char *fcc )
 131 {
 132     memcpy( p, fcc, 4 );
 133 }
 134
 135 /*****************************************************************************
 136  * Open:
 137  *****************************************************************************/
 138 static int Open( vlc_object_t *p_this )
 139 {
 140     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 141     sout_mux_sys_t  *p_sys;
 142
 143     msg_Dbg( p_mux, "AVI muxer opened" );
 144
 145     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 146     if( !p_sys )
 147         return VLC_ENOMEM;
 148     p_sys->i_streams = 0;
 149     p_sys->i_stream_video = -1;
 150     p_sys->i_movi_size = 0;
 151
 152     p_sys->idx1.i_entry_count = 0;
 153     p_sys->idx1.i_entry_max = 10000;
 154     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 155                                 sizeof( avi_idx1_entry_t ) );
 156     if( !p_sys->idx1.entry )
 157     {
 158         free( p_sys );
 159         return VLC_ENOMEM;
 160     }
 161     p_sys->b_write_header = true;
 162
 163
 164     p_mux->pf_control   = Control;
 165     p_mux->pf_addstream = AddStream;
 166     p_mux->pf_delstream = DelStream;
 167     p_mux->pf_mux       = Mux;
 168     p_mux->p_sys        = p_sys;
 169
 170     return VLC_SUCCESS;
 171 }
 172
 173 /*****************************************************************************
 174  * Close:
 175  *****************************************************************************/
 176 static void Close( vlc_object_t * p_this )
 177 {
 178     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 179     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 180
 181     block_t       *p_hdr, *p_idx1;
 182     int                 i_stream;
 183
 184     msg_Dbg( p_mux, "AVI muxer closed" );
 185
 186     /* first create idx1 chunk (write at the end of the stream */
 187     p_idx1 = avi_HeaderCreateidx1( p_mux );
 188     p_sys->i_idx1_size = p_idx1->i_buffer;
 189     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 190
 191     /* calculate some value for headers creations */
 192     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 193     {
 194         avi_stream_t *p_stream;
 195
 196         p_stream = &p_sys->stream[i_stream];
 197
 198         p_stream->f_fps = 25;
 199         if( p_stream->i_duration > 0 )
 200         {
 201             p_stream->f_fps = (float)p_stream->i_frames /
 202                               ( (float)p_stream->i_duration /
 203                                 (float)1000000 );
 204         }
 205         p_stream->i_bitrate = 128 * 1024;
 206         if( p_stream->i_duration > 0 )
 207         {
 208             p_stream->i_bitrate =
 209                 8 * (uint64_t)1000000 *
 210                     (uint64_t)p_stream->i_totalsize /
 211                     (uint64_t)p_stream->i_duration;
 212         }
 213         msg_Info( p_mux, "stream[%d] duration:%"PRId64" totalsize:%"PRId64
 214                   " frames:%d fps:%f KiB/s:%d",
 215                   i_stream,
 216                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 217                   p_stream->i_totalsize,
 218                   p_stream->i_frames,
 219                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 220     }
 221
 222     p_hdr = avi_HeaderCreateRIFF( p_mux );
 223     sout_AccessOutSeek( p_mux->p_access, 0 );
 224     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 225
 226     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 227     {
 228         avi_stream_t *p_stream;
 229         p_stream = &p_sys->stream[i_stream];
 230         free( p_stream->p_bih );
 231         free( p_stream->p_wf );
 232     }
 233     free( p_sys->idx1.entry );
 234     free( p_sys );
 235 }
 236
 237 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 238 {
 239     VLC_UNUSED(p_mux);
 240     bool *pb_bool;
 241     char **ppsz;
 242
 243    switch( i_query )
 244    {
 245        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 246            pb_bool = (bool*)va_arg( args, bool * );
 247            *pb_bool = false;
 248            return VLC_SUCCESS;
 249
 250        case MUX_GET_ADD_STREAM_WAIT:
 251            pb_bool = (bool*)va_arg( args, bool * );
 252            *pb_bool = true;
 253            return VLC_SUCCESS;
 254
 255        case MUX_GET_MIME:
 256            ppsz = (char**)va_arg( args, char ** );
 257            *ppsz = strdup( "video/avi" );
 258            return VLC_SUCCESS;
 259
 260         default:
 261             return VLC_EGENERIC;
 262    }
 263 }
 264
 265 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 266 {
 267     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 268     avi_stream_t    *p_stream;
 269
 270     if( p_sys->i_streams >= 100 )
 271     {
 272         msg_Err( p_mux, "too many streams" );
 273         return VLC_EGENERIC;
 274     }
 275
 276     msg_Dbg( p_mux, "adding input" );
 277     p_input->p_sys = malloc( sizeof( int ) );
 278     if( !p_input->p_sys )
 279         return VLC_ENOMEM;
 280
 281     *((int*)p_input->p_sys) = p_sys->i_streams;
 282     p_stream = &p_sys->stream[p_sys->i_streams];
 283
 284     switch( p_input->p_fmt->i_cat )
 285     {
 286         case AUDIO_ES:
 287             p_stream->i_cat = AUDIO_ES;
 288             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 289             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 290             p_stream->fcc[2] = 'w';
 291             p_stream->fcc[3] = 'b';
 292
 293             p_stream->p_bih = NULL;
 294
 295             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 296                                       p_input->p_fmt->i_extra );
 297             if( !p_stream->p_wf )
 298             {
 299                 free( p_input->p_sys );
 300                 return VLC_ENOMEM;
 301             }
 302 #define p_wf p_stream->p_wf
 303             p_wf->cbSize = p_input->p_fmt->i_extra;
 304             if( p_wf->cbSize > 0 )
 305             {
 306                 memcpy( &p_wf[1],
 307                         p_input->p_fmt->p_extra,
 308                         p_input->p_fmt->i_extra );
 309             }
 310             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 311             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 312             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 313             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 314             p_wf->wBitsPerSample = 0;
 315
 316             switch( p_input->p_fmt->i_codec )
 317             {
 318                 case VLC_CODEC_A52:
 319                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 320                     p_wf->nBlockAlign= 1;
 321                     break;
 322                 case VLC_CODEC_MPGA:
 323                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 324                     p_wf->nBlockAlign= 1;
 325                     break;
 326                 case VLC_CODEC_WMA1:
 327                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 328                     break;
 329                 case VLC_CODEC_WMA2:
 330                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 331                     break;
 332                 case VLC_CODEC_WMAP:
 333                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 334                     break;
 335                 case VLC_CODEC_WMAL:
 336                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 337                     break;
 338                     /* raw codec */
 339                 case VLC_CODEC_U8:
 340                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 341                     p_wf->nBlockAlign= p_wf->nChannels;
 342                     p_wf->wBitsPerSample = 8;
 343                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 344                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 345                     break;
 346                 case VLC_CODEC_S16L:
 347                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 348                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 349                     p_wf->wBitsPerSample = 16;
 350                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 351                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 352                     break;
 353                 case VLC_CODEC_S24L:
 354                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 355                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 356                     p_wf->wBitsPerSample = 24;
 357                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 358                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 359                     break;
 360                 case VLC_CODEC_S32L:
 361                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 362                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 363                     p_wf->wBitsPerSample = 32;
 364                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 365                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 366                     break;
 367                 default:
 368                     return VLC_EGENERIC;
 369             }
 370 #undef p_wf
 371             break;
 372         case VIDEO_ES:
 373             p_stream->i_cat = VIDEO_ES;
 374             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 375             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 376             p_stream->fcc[2] = 'd';
 377             p_stream->fcc[3] = 'c';
 378             if( p_sys->i_stream_video < 0 )
 379             {
 380                 p_sys->i_stream_video = p_sys->i_streams;
 381             }
 382             p_stream->p_wf  = NULL;
 383             p_stream->p_bih = malloc( sizeof( VLC_BITMAPINFOHEADER ) +
 384                                       p_input->p_fmt->i_extra );
 385             if( !p_stream->p_bih )
 386             {
 387                 free( p_input->p_sys );
 388                 return VLC_ENOMEM;
 389             }
 390 #define p_bih p_stream->p_bih
 391             p_bih->biSize  = sizeof( VLC_BITMAPINFOHEADER ) +
 392                              p_input->p_fmt->i_extra;
 393             if( p_input->p_fmt->i_extra > 0 )
 394             {
 395                 memcpy( &p_bih[1],
 396                         p_input->p_fmt->p_extra,
 397                         p_input->p_fmt->i_extra );
 398             }
 399             p_bih->biWidth = p_input->p_fmt->video.i_width;
 400             p_bih->biHeight= p_input->p_fmt->video.i_height;
 401             p_bih->biPlanes= 1;
 402             p_bih->biBitCount       = 24;
 403             p_bih->biSizeImage      = 0;
 404             p_bih->biXPelsPerMeter  = 0;
 405             p_bih->biYPelsPerMeter  = 0;
 406             p_bih->biClrUsed        = 0;
 407             p_bih->biClrImportant   = 0;
 408             switch( p_input->p_fmt->i_codec )
 409             {
 410                 case VLC_CODEC_MP4V:
 411                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 412                     break;
 413                 default:
 414                     p_bih->biCompression = p_input->p_fmt->i_original_fourcc ?: p_input->p_fmt->i_codec;
 415                     break;
 416             }
 417 #undef p_bih
 418             break;
 419         default:
 420             return( VLC_EGENERIC );
 421     }
 422     p_stream->i_totalsize = 0;
 423     p_stream->i_frames    = 0;
 424     p_stream->i_duration  = 0;
 425
 426     /* fixed later */
 427     p_stream->f_fps = 25;
 428     p_stream->i_bitrate = 128 * 1024;
 429
 430     p_sys->i_streams++;
 431     return( VLC_SUCCESS );
 432 }
 433
 434 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 435 {
 436     msg_Dbg( p_mux, "removing input" );
 437
 438     free( p_input->p_sys );
 439     return 0;
 440 }
 441
 442 static int Mux      ( sout_mux_t *p_mux )
 443 {
 444     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 445     avi_stream_t    *p_stream;
 446     int i_stream, i;
 447
 448     if( p_sys->b_write_header )
 449     {
 450         block_t *p_hdr;
 451
 452         msg_Dbg( p_mux, "writing header" );
 453
 454         p_hdr = avi_HeaderCreateRIFF( p_mux );
 455         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 456
 457         p_sys->b_write_header = false;
 458     }
 459
 460     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 461     {
 462         int i_count;
 463         block_fifo_t *p_fifo;
 464
 465         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 466         p_stream = &p_sys->stream[i_stream];
 467
 468         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 469         i_count = block_FifoCount(  p_fifo );
 470         while( i_count > 1 )
 471         {
 472             avi_idx1_entry_t *p_idx;
 473             block_t *p_data;
 474
 475             p_data = block_FifoGet( p_fifo );
 476             if( block_FifoCount( p_fifo ) > 0 )
 477             {
 478                 block_t *p_next = block_FifoShow( p_fifo );
 479                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 480             }
 481
 482
 483             if( p_stream->i_frames == 0 &&p_stream->i_cat == VIDEO_ES )
 484             {
 485                /* Add header present at the end of BITMAP info header
 486                   to first frame in case of XVID */
 487                if( p_stream->p_bih->biCompression
 488                                == VLC_FOURCC( 'X', 'V', 'I', 'D' ) )
 489                {
 490                    int i_header_length =
 491                        p_stream->p_bih->biSize - sizeof(VLC_BITMAPINFOHEADER);
 492                    p_data = block_Realloc( p_data,
 493                                    i_header_length, p_data->i_buffer );
 494                    if( !p_data)
 495                        return VLC_ENOMEM;
 496                    memcpy(p_data->p_buffer,&p_stream->p_bih[1], i_header_length);
 497                }
 498             }
 499
 500             p_stream->i_frames++;
 501             if( p_data->i_length < 0 )
 502             {
 503                 msg_Warn( p_mux, "argg length < 0 l" );
 504                 block_Release( p_data );
 505                 i_count--;
 506                 continue;
 507             }
 508             p_stream->i_duration  += p_data->i_length;
 509             p_stream->i_totalsize += p_data->i_buffer;
 510
 511             /* add idx1 entry for this frame */
 512             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 513             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 514             p_idx->i_flags = 0;
 515             if( ( p_data->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 || ( p_data->i_flags & BLOCK_FLAG_TYPE_I ) )
 516                 p_idx->i_flags = AVIIF_KEYFRAME;
 517             p_idx->i_pos   = p_sys->i_movi_size + 4;
 518             p_idx->i_length= p_data->i_buffer;
 519             p_sys->idx1.i_entry_count++;
 520             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 521             {
 522                 p_sys->idx1.i_entry_max += 10000;
 523                 p_sys->idx1.entry = xrealloc( p_sys->idx1.entry,
 524                        p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 525             }
 526
 527             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 528             if( p_data )
 529             {
 530                 SetFCC( p_data->p_buffer, p_stream->fcc );
 531                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 532
 533                 if( p_data->i_buffer & 0x01 )
 534                 {
 535                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 536                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 537                 }
 538
 539                 p_sys->i_movi_size += p_data->i_buffer;
 540                 sout_AccessOutWrite( p_mux->p_access, p_data );
 541             }
 542
 543             i_count--;
 544         }
 545
 546     }
 547     return( 0 );
 548 }
 549
 550 /****************************************************************************/
 551 /****************************************************************************/
 552 /****************************************************************************/
 553 /****************************************************************************/
 554
 555 typedef struct buffer_out_s
 556 {
 557     int      i_buffer_size;
 558     int      i_buffer;
 559     uint8_t  *p_buffer;
 560
 561 } buffer_out_t;
 562
 563 static void bo_Init( buffer_out_t *p_bo, int i_size, uint8_t *p_buffer )
 564 {
 565     p_bo->i_buffer_size = i_size;
 566     p_bo->i_buffer = 0;
 567     p_bo->p_buffer = p_buffer;
 568 }
 569 static void bo_AddByte( buffer_out_t *p_bo, uint8_t i )
 570 {
 571     if( p_bo->i_buffer < p_bo->i_buffer_size )
 572     {
 573         p_bo->p_buffer[p_bo->i_buffer] = i;
 574     }
 575     p_bo->i_buffer++;
 576 }
 577 static void bo_AddWordLE( buffer_out_t *p_bo, uint16_t i )
 578 {
 579     bo_AddByte( p_bo, i &0xff );
 580     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 581 }
 582 static void bo_AddWordBE( buffer_out_t *p_bo, uint16_t i )
 583 {
 584     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 585     bo_AddByte( p_bo, i &0xff );
 586 }
 587 static void bo_AddDWordLE( buffer_out_t *p_bo, uint32_t i )
 588 {
 589     bo_AddWordLE( p_bo, i &0xffff );
 590     bo_AddWordLE( p_bo, ( ( i >> 16) &0xffff ) );
 591 }
 592 static void bo_AddDWordBE( buffer_out_t *p_bo, uint32_t i )
 593 {
 594     bo_AddWordBE( p_bo, ( ( i >> 16) &0xffff ) );
 595     bo_AddWordBE( p_bo, i &0xffff );
 596 }
 597 #if 0
 598 static void bo_AddLWordLE( buffer_out_t *p_bo, uint64_t i )
 599 {
 600     bo_AddDWordLE( p_bo, i &0xffffffff );
 601     bo_AddDWordLE( p_bo, ( ( i >> 32) &0xffffffff ) );
 602 }
 603 static void bo_AddLWordBE( buffer_out_t *p_bo, uint64_t i )
 604 {
 605     bo_AddDWordBE( p_bo, ( ( i >> 32) &0xffffffff ) );
 606     bo_AddDWordBE( p_bo, i &0xffffffff );
 607 }
 608 #endif
 609
 610 static void bo_AddFCC( buffer_out_t *p_bo, const char *fcc )
 611 {
 612     bo_AddByte( p_bo, fcc[0] );
 613     bo_AddByte( p_bo, fcc[1] );
 614     bo_AddByte( p_bo, fcc[2] );
 615     bo_AddByte( p_bo, fcc[3] );
 616 }
 617
 618 static void bo_AddMem( buffer_out_t *p_bo, int i_size, uint8_t *p_mem )
 619 {
 620     int i;
 621
 622     for( i = 0; i < i_size; i++ )
 623     {
 624         bo_AddByte( p_bo, p_mem[i] );
 625     }
 626 }
 627
 628 /****************************************************************************
 629  ****************************************************************************
 630  **
 631  ** avi header generation
 632  **
 633  ****************************************************************************
 634  ****************************************************************************/
 635 #define AVI_BOX_ENTER( fcc ) \
 636     buffer_out_t _bo_sav_; \
 637     bo_AddFCC( p_bo, fcc ); \
 638     _bo_sav_ = *p_bo; \
 639     bo_AddDWordLE( p_bo, 0 )
 640
 641 #define AVI_BOX_ENTER_LIST( fcc ) \
 642     AVI_BOX_ENTER( "LIST" ); \
 643     bo_AddFCC( p_bo, fcc )
 644
 645 #define AVI_BOX_EXIT( i_err ) \
 646     if( p_bo->i_buffer&0x01 ) bo_AddByte( p_bo, 0 ); \
 647     bo_AddDWordLE( &_bo_sav_, p_bo->i_buffer - _bo_sav_.i_buffer - 4 ); \
 648     return( i_err );
 649
 650 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 651                                buffer_out_t *p_bo )
 652 {
 653     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 654     avi_stream_t    *p_video = NULL;
 655     int         i_stream;
 656     uint32_t    i_microsecperframe;
 657     int         i_maxbytespersec;
 658     int         i_totalframes;
 659     AVI_BOX_ENTER( "avih" );
 660
 661     if( p_sys->i_stream_video >= 0 )
 662     {
 663         p_video = &p_sys->stream[p_sys->i_stream_video];
 664         if( p_video->i_frames <= 0 )
 665         {
 666         //    p_video = NULL;
 667         }
 668     }
 669
 670     if( p_video )
 671     {
 672         i_microsecperframe =
 673             (uint32_t)( (float)1000000 /
 674                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 675         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 676     }
 677     else
 678     {
 679         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 680         i_microsecperframe = 0;
 681         i_totalframes = 0;
 682     }
 683
 684     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 685     {
 686         if( p_sys->stream[i_stream].i_duration > 0 )
 687         {
 688             i_maxbytespersec +=
 689                 p_sys->stream[i_stream].i_totalsize /
 690                 p_sys->stream[i_stream].i_duration;
 691         }
 692     }
 693
 694     bo_AddDWordLE( p_bo, i_microsecperframe );
 695     bo_AddDWordLE( p_bo, i_maxbytespersec );
 696     bo_AddDWordLE( p_bo, 0 );                   /* padding */
 697     bo_AddDWordLE( p_bo, AVIF_TRUSTCKTYPE |
 698                          AVIF_HASINDEX |
 699                          AVIF_ISINTERLEAVED );  /* flags */
 700     bo_AddDWordLE( p_bo, i_totalframes );
 701     bo_AddDWordLE( p_bo, 0 );                   /* initial frame */
 702     bo_AddDWordLE( p_bo, p_sys->i_streams );    /* streams count */
 703     bo_AddDWordLE( p_bo, 1024 * 1024 );         /* suggested buffer size */
 704     if( p_video )
 705     {
 706         bo_AddDWordLE( p_bo, p_video->p_bih->biWidth );
 707         bo_AddDWordLE( p_bo, p_video->p_bih->biHeight );
 708     }
 709     else
 710     {
 711         bo_AddDWordLE( p_bo, 0 );
 712         bo_AddDWordLE( p_bo, 0 );
 713     }
 714     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 715     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 716     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 717     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 718
 719     AVI_BOX_EXIT( 0 );
 720 }
 721 static int avi_HeaderAdd_strh( buffer_out_t *p_bo, avi_stream_t *p_stream )
 722 {
 723     AVI_BOX_ENTER( "strh" );
 724
 725     switch( p_stream->i_cat )
 726     {
 727         case VIDEO_ES:
 728             {
 729                 bo_AddFCC( p_bo, "vids" );
 730                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 731                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 732                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 733                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 734                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 735                 bo_AddDWordLE( p_bo, 1000 );/* scale */
 736                 bo_AddDWordLE( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 737                 bo_AddDWordLE( p_bo, 0 );   /* start */
 738                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 739                 bo_AddDWordLE( p_bo, 1024 * 1024 );
 740                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 741                 bo_AddDWordLE( p_bo, 0 );   /* samplesize */
 742                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 743                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 744                 bo_AddWordLE(  p_bo, p_stream->p_bih->biWidth );
 745                 bo_AddWordLE(  p_bo, p_stream->p_bih->biHeight );
 746             }
 747             break;
 748         case AUDIO_ES:
 749             {
 750                 int i_rate, i_scale, i_samplesize;
 751
 752                 i_samplesize = p_stream->p_wf->nBlockAlign;
 753                 if( i_samplesize > 1 )
 754                 {
 755                     i_scale = i_samplesize;
 756                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 757                 }
 758                 else
 759                 {
 760                     i_samplesize = 1;
 761                     i_scale = 1000;
 762                     i_rate = 1000 * p_stream->i_bitrate / 8;
 763                 }
 764                 bo_AddFCC( p_bo, "auds" );
 765                 bo_AddDWordLE( p_bo, 0 );   /* tag */
 766                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 767                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 768                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 769                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 770                 bo_AddDWordLE( p_bo, i_scale );/* scale */
 771                 bo_AddDWordLE( p_bo, i_rate );
 772                 bo_AddDWordLE( p_bo, 0 );   /* start */
 773                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 774                 bo_AddDWordLE( p_bo, 10 * 1024 );
 775                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 776                 bo_AddDWordLE( p_bo, i_samplesize );
 777                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 778                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 779                 bo_AddWordLE(  p_bo, 0 );
 780                 bo_AddWordLE(  p_bo, 0 );
 781             }
 782             break;
 783     }
 784
 785     AVI_BOX_EXIT( 0 );
 786 }
 787
 788 static int avi_HeaderAdd_strf( buffer_out_t *p_bo, avi_stream_t *p_stream )
 789 {
 790     AVI_BOX_ENTER( "strf" );
 791
 792     switch( p_stream->i_cat )
 793     {
 794         case AUDIO_ES:
 795             bo_AddWordLE( p_bo, p_stream->p_wf->wFormatTag );
 796             bo_AddWordLE( p_bo, p_stream->p_wf->nChannels );
 797             bo_AddDWordLE( p_bo, p_stream->p_wf->nSamplesPerSec );
 798             bo_AddDWordLE( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 799             bo_AddWordLE( p_bo, p_stream->p_wf->nBlockAlign );
 800             bo_AddWordLE( p_bo, p_stream->p_wf->wBitsPerSample );
 801             bo_AddWordLE( p_bo, p_stream->p_wf->cbSize );
 802             bo_AddMem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 803             break;
 804         case VIDEO_ES:
 805             bo_AddDWordLE( p_bo, p_stream->p_bih->biSize );
 806             bo_AddDWordLE( p_bo, p_stream->p_bih->biWidth );
 807             bo_AddDWordLE( p_bo, p_stream->p_bih->biHeight );
 808             bo_AddWordLE( p_bo, p_stream->p_bih->biPlanes );
 809             bo_AddWordLE( p_bo, p_stream->p_bih->biBitCount );
 810             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 811             {
 812                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 813             }
 814             else
 815             {
 816                 bo_AddDWordLE( p_bo, p_stream->p_bih->biCompression );
 817             }
 818             bo_AddDWordLE( p_bo, p_stream->p_bih->biSizeImage );
 819             bo_AddDWordLE( p_bo, p_stream->p_bih->biXPelsPerMeter );
 820             bo_AddDWordLE( p_bo, p_stream->p_bih->biYPelsPerMeter );
 821             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrUsed );
 822             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrImportant );
 823             bo_AddMem( p_bo,
 824                        p_stream->p_bih->biSize - sizeof( VLC_BITMAPINFOHEADER ),
 825                        (uint8_t*)&p_stream->p_bih[1] );
 826             break;
 827     }
 828
 829     AVI_BOX_EXIT( 0 );
 830 }
 831
 832 static int avi_HeaderAdd_strl( buffer_out_t *p_bo, avi_stream_t *p_stream )
 833 {
 834     AVI_BOX_ENTER_LIST( "strl" );
 835
 836     avi_HeaderAdd_strh( p_bo, p_stream );
 837     avi_HeaderAdd_strf( p_bo, p_stream );
 838
 839     AVI_BOX_EXIT( 0 );
 840 }
 841
 842 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 843 {
 844     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 845     block_t       *p_hdr;
 846     int                 i_stream;
 847     int                 i_junk;
 848     buffer_out_t        bo;
 849
 850     p_hdr = block_Alloc( HDR_SIZE );
 851     memset( p_hdr->p_buffer, 0, HDR_SIZE );
 852
 853     bo_Init( &bo, HDR_SIZE, p_hdr->p_buffer );
 854
 855     bo_AddFCC( &bo, "RIFF" );
 856     bo_AddDWordLE( &bo, p_sys->i_movi_size + HDR_SIZE - 8 + p_sys->i_idx1_size );
 857     bo_AddFCC( &bo, "AVI " );
 858
 859     bo_AddFCC( &bo, "LIST" );
 860     /* HDRL List size should exclude following data in HDR buffer
 861      *  -12 (RIFF, RIFF size, 'AVI ' tag),
 862      *  - 8 (hdr1 LIST tag and its size)
 863      *  - 12 (movi LIST tag, size, 'movi' listType )
 864      */
 865     bo_AddDWordLE( &bo, HDR_SIZE - 12 - 8 - 12);
 866     bo_AddFCC( &bo, "hdrl" );
 867
 868     avi_HeaderAdd_avih( p_mux, &bo );
 869     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 870     {
 871         avi_HeaderAdd_strl( &bo, &p_sys->stream[i_stream] );
 872     }
 873
 874     i_junk = HDR_SIZE - bo.i_buffer - 8 - 12;
 875     bo_AddFCC( &bo, "JUNK" );
 876     bo_AddDWordLE( &bo, i_junk );
 877
 878     bo.i_buffer += i_junk;
 879     bo_AddFCC( &bo, "LIST" );
 880     bo_AddDWordLE( &bo, p_sys->i_movi_size + 4 );
 881     bo_AddFCC( &bo, "movi" );
 882
 883     return( p_hdr );
 884 }
 885
 886 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 887 {
 888     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 889     block_t             *p_idx1;
 890     uint32_t            i_idx1_size;
 891     buffer_out_t        bo;
 892
 893     i_idx1_size = 16 * p_sys->idx1.i_entry_count + 8;
 894
 895     p_idx1 = block_Alloc( i_idx1_size);
 896     memset( p_idx1->p_buffer, 0, i_idx1_size);
 897
 898     bo_Init( &bo, i_idx1_size, p_idx1->p_buffer );
 899     bo_AddFCC( &bo, "idx1" );
 900     bo_AddDWordLE( &bo, i_idx1_size - 8);
 901
 902     for( unsigned i = 0; i < p_sys->idx1.i_entry_count; i++ )
 903     {
 904         bo_AddFCC( &bo, p_sys->idx1.entry[i].fcc );
 905         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_flags );
 906         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_pos );
 907         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_length );
 908     }
 909
 910     return( p_idx1 );
 911 }
 912