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     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
 227 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 228 {
 229     VLC_UNUSED(p_mux);
 230     bool *pb_bool;
 231     char **ppsz;
 232
 233    switch( i_query )
 234    {
 235        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 236            pb_bool = (bool*)va_arg( args, bool * );
 237            *pb_bool = false;
 238            return VLC_SUCCESS;
 239
 240        case MUX_GET_ADD_STREAM_WAIT:
 241            pb_bool = (bool*)va_arg( args, bool * );
 242            *pb_bool = true;
 243            return VLC_SUCCESS;
 244
 245        case MUX_GET_MIME:
 246            ppsz = (char**)va_arg( args, char ** );
 247            *ppsz = strdup( "video/avi" );
 248            return VLC_SUCCESS;
 249
 250         default:
 251             return VLC_EGENERIC;
 252    }
 253 }
 254
 255 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 256 {
 257     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 258     avi_stream_t    *p_stream;
 259
 260     if( p_sys->i_streams >= 100 )
 261     {
 262         msg_Err( p_mux, "too many streams" );
 263         return VLC_EGENERIC;
 264     }
 265
 266     msg_Dbg( p_mux, "adding input" );
 267     p_input->p_sys = malloc( sizeof( int ) );
 268     if( !p_input->p_sys )
 269         return VLC_ENOMEM;
 270
 271     *((int*)p_input->p_sys) = p_sys->i_streams;
 272     p_stream = &p_sys->stream[p_sys->i_streams];
 273
 274     switch( p_input->p_fmt->i_cat )
 275     {
 276         case AUDIO_ES:
 277             p_stream->i_cat = AUDIO_ES;
 278             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 279             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 280             p_stream->fcc[2] = 'w';
 281             p_stream->fcc[3] = 'b';
 282
 283             p_stream->p_bih = NULL;
 284
 285             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 286                                       p_input->p_fmt->i_extra );
 287             if( !p_stream->p_wf )
 288             {
 289                 free( p_input->p_sys );
 290                 return VLC_ENOMEM;
 291             }
 292 #define p_wf p_stream->p_wf
 293             p_wf->cbSize = p_input->p_fmt->i_extra;
 294             if( p_wf->cbSize > 0 )
 295             {
 296                 memcpy( &p_wf[1],
 297                         p_input->p_fmt->p_extra,
 298                         p_input->p_fmt->i_extra );
 299             }
 300             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 301             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 302             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 303             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 304             p_wf->wBitsPerSample = 0;
 305
 306             switch( p_input->p_fmt->i_codec )
 307             {
 308                 case VLC_CODEC_A52:
 309                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 310                     p_wf->nBlockAlign= 1;
 311                     break;
 312                 case VLC_CODEC_MPGA:
 313                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 314                     p_wf->nBlockAlign= 1;
 315                     break;
 316                 case VLC_CODEC_WMA1:
 317                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 318                     break;
 319                 case VLC_CODEC_WMA2:
 320                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 321                     break;
 322                 case VLC_CODEC_WMAP:
 323                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 324                     break;
 325                 case VLC_CODEC_WMAL:
 326                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 327                     break;
 328                     /* raw codec */
 329                 case VLC_CODEC_U8:
 330                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 331                     p_wf->nBlockAlign= p_wf->nChannels;
 332                     p_wf->wBitsPerSample = 8;
 333                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 334                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 335                     break;
 336                 case VLC_CODEC_S16L:
 337                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 338                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 339                     p_wf->wBitsPerSample = 16;
 340                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 341                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 342                     break;
 343                 case VLC_CODEC_S24L:
 344                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 345                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 346                     p_wf->wBitsPerSample = 24;
 347                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 348                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 349                     break;
 350                 case VLC_CODEC_S32L:
 351                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 352                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 353                     p_wf->wBitsPerSample = 32;
 354                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 355                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 356                     break;
 357                 default:
 358                     return VLC_EGENERIC;
 359             }
 360 #undef p_wf
 361             break;
 362         case VIDEO_ES:
 363             p_stream->i_cat = VIDEO_ES;
 364             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 365             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 366             p_stream->fcc[2] = 'd';
 367             p_stream->fcc[3] = 'c';
 368             if( p_sys->i_stream_video < 0 )
 369             {
 370                 p_sys->i_stream_video = p_sys->i_streams;
 371             }
 372             p_stream->p_wf  = NULL;
 373             p_stream->p_bih = malloc( sizeof( BITMAPINFOHEADER ) +
 374                                       p_input->p_fmt->i_extra );
 375             if( !p_stream->p_bih )
 376             {
 377                 free( p_input->p_sys );
 378                 return VLC_ENOMEM;
 379             }
 380 #define p_bih p_stream->p_bih
 381             p_bih->biSize  = sizeof( BITMAPINFOHEADER ) +
 382                              p_input->p_fmt->i_extra;
 383             if( p_input->p_fmt->i_extra > 0 )
 384             {
 385                 memcpy( &p_bih[1],
 386                         p_input->p_fmt->p_extra,
 387                         p_input->p_fmt->i_extra );
 388             }
 389             p_bih->biWidth = p_input->p_fmt->video.i_width;
 390             p_bih->biHeight= p_input->p_fmt->video.i_height;
 391             p_bih->biPlanes= 1;
 392             p_bih->biBitCount       = 24;
 393             p_bih->biSizeImage      = 0;
 394             p_bih->biXPelsPerMeter  = 0;
 395             p_bih->biYPelsPerMeter  = 0;
 396             p_bih->biClrUsed        = 0;
 397             p_bih->biClrImportant   = 0;
 398             switch( p_input->p_fmt->i_codec )
 399             {
 400                 case VLC_CODEC_MP4V:
 401                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 402                     break;
 403                 default:
 404                     p_bih->biCompression = p_input->p_fmt->i_original_fourcc ?: p_input->p_fmt->i_codec;
 405                     break;
 406             }
 407 #undef p_bih
 408             break;
 409         default:
 410             return( VLC_EGENERIC );
 411     }
 412     p_stream->i_totalsize = 0;
 413     p_stream->i_frames    = 0;
 414     p_stream->i_duration  = 0;
 415
 416     /* fixed later */
 417     p_stream->f_fps = 25;
 418     p_stream->i_bitrate = 128 * 1024;
 419
 420     p_sys->i_streams++;
 421     return( VLC_SUCCESS );
 422 }
 423
 424 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 425 {
 426     msg_Dbg( p_mux, "removing input" );
 427
 428     free( p_input->p_sys );
 429     return 0;
 430 }
 431
 432 static int Mux      ( sout_mux_t *p_mux )
 433 {
 434     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 435     avi_stream_t    *p_stream;
 436     int i_stream, i;
 437
 438     if( p_sys->b_write_header )
 439     {
 440         block_t *p_hdr;
 441
 442         msg_Dbg( p_mux, "writing header" );
 443
 444         p_hdr = avi_HeaderCreateRIFF( p_mux );
 445         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 446
 447         p_sys->b_write_header = false;
 448     }
 449
 450     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 451     {
 452         int i_count;
 453         block_fifo_t *p_fifo;
 454
 455         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 456         p_stream = &p_sys->stream[i_stream];
 457
 458         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 459         i_count = block_FifoCount(  p_fifo );
 460         while( i_count > 1 )
 461         {
 462             avi_idx1_entry_t *p_idx;
 463             block_t *p_data;
 464
 465             p_data = block_FifoGet( p_fifo );
 466             if( block_FifoCount( p_fifo ) > 0 )
 467             {
 468                 block_t *p_next = block_FifoShow( p_fifo );
 469                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 470             }
 471
 472
 473             if( p_stream->i_frames == 0 &&p_stream->i_cat == VIDEO_ES )
 474             {
 475                /* Add header present at the end of BITMAP info header
 476                   to first frame in case of XVID */
 477                if( p_stream->p_bih->biCompression
 478                                == VLC_FOURCC( 'X', 'V', 'I', 'D' ) )
 479                {
 480                    int i_header_length =
 481                        p_stream->p_bih->biSize - sizeof(BITMAPINFOHEADER);
 482                    p_data = block_Realloc( p_data,
 483                                    i_header_length, p_data->i_buffer );
 484                    if( !p_data)
 485                        return VLC_ENOMEM;
 486                    memcpy(p_data->p_buffer,&p_stream->p_bih[1], i_header_length);
 487                }
 488             }
 489
 490             p_stream->i_frames++;
 491             if( p_data->i_length < 0 )
 492             {
 493                 msg_Warn( p_mux, "argg length < 0 l" );
 494                 block_Release( p_data );
 495                 i_count--;
 496                 continue;
 497             }
 498             p_stream->i_duration  += p_data->i_length;
 499             p_stream->i_totalsize += p_data->i_buffer;
 500
 501             /* add idx1 entry for this frame */
 502             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 503             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 504             p_idx->i_flags = 0;
 505             if( ( p_data->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 || ( p_data->i_flags & BLOCK_FLAG_TYPE_I ) )
 506                 p_idx->i_flags = AVIIF_KEYFRAME;
 507             p_idx->i_pos   = p_sys->i_movi_size + 4;
 508             p_idx->i_length= p_data->i_buffer;
 509             p_sys->idx1.i_entry_count++;
 510             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 511             {
 512                 p_sys->idx1.i_entry_max += 10000;
 513                 p_sys->idx1.entry = xrealloc( p_sys->idx1.entry,
 514                        p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 515             }
 516
 517             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 518             if( p_data )
 519             {
 520                 SetFCC( p_data->p_buffer, p_stream->fcc );
 521                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 522
 523                 if( p_data->i_buffer & 0x01 )
 524                 {
 525                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 526                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 527                 }
 528
 529                 p_sys->i_movi_size += p_data->i_buffer;
 530                 sout_AccessOutWrite( p_mux->p_access, p_data );
 531             }
 532
 533             i_count--;
 534         }
 535
 536     }
 537     return( 0 );
 538 }
 539
 540 /****************************************************************************/
 541 /****************************************************************************/
 542 /****************************************************************************/
 543 /****************************************************************************/
 544
 545 typedef struct buffer_out_s
 546 {
 547     int      i_buffer_size;
 548     int      i_buffer;
 549     uint8_t  *p_buffer;
 550
 551 } buffer_out_t;
 552
 553 static void bo_Init( buffer_out_t *p_bo, int i_size, uint8_t *p_buffer )
 554 {
 555     p_bo->i_buffer_size = i_size;
 556     p_bo->i_buffer = 0;
 557     p_bo->p_buffer = p_buffer;
 558 }
 559 static void bo_AddByte( buffer_out_t *p_bo, uint8_t i )
 560 {
 561     if( p_bo->i_buffer < p_bo->i_buffer_size )
 562     {
 563         p_bo->p_buffer[p_bo->i_buffer] = i;
 564     }
 565     p_bo->i_buffer++;
 566 }
 567 static void bo_AddWordLE( buffer_out_t *p_bo, uint16_t i )
 568 {
 569     bo_AddByte( p_bo, i &0xff );
 570     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 571 }
 572 static void bo_AddWordBE( buffer_out_t *p_bo, uint16_t i )
 573 {
 574     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 575     bo_AddByte( p_bo, i &0xff );
 576 }
 577 static void bo_AddDWordLE( buffer_out_t *p_bo, uint32_t i )
 578 {
 579     bo_AddWordLE( p_bo, i &0xffff );
 580     bo_AddWordLE( p_bo, ( ( i >> 16) &0xffff ) );
 581 }
 582 static void bo_AddDWordBE( buffer_out_t *p_bo, uint32_t i )
 583 {
 584     bo_AddWordBE( p_bo, ( ( i >> 16) &0xffff ) );
 585     bo_AddWordBE( p_bo, i &0xffff );
 586 }
 587 #if 0
 588 static void bo_AddLWordLE( buffer_out_t *p_bo, uint64_t i )
 589 {
 590     bo_AddDWordLE( p_bo, i &0xffffffff );
 591     bo_AddDWordLE( p_bo, ( ( i >> 32) &0xffffffff ) );
 592 }
 593 static void bo_AddLWordBE( buffer_out_t *p_bo, uint64_t i )
 594 {
 595     bo_AddDWordBE( p_bo, ( ( i >> 32) &0xffffffff ) );
 596     bo_AddDWordBE( p_bo, i &0xffffffff );
 597 }
 598 #endif
 599
 600 static void bo_AddFCC( buffer_out_t *p_bo, const char *fcc )
 601 {
 602     bo_AddByte( p_bo, fcc[0] );
 603     bo_AddByte( p_bo, fcc[1] );
 604     bo_AddByte( p_bo, fcc[2] );
 605     bo_AddByte( p_bo, fcc[3] );
 606 }
 607
 608 static void bo_AddMem( buffer_out_t *p_bo, int i_size, uint8_t *p_mem )
 609 {
 610     int i;
 611
 612     for( i = 0; i < i_size; i++ )
 613     {
 614         bo_AddByte( p_bo, p_mem[i] );
 615     }
 616 }
 617
 618 /****************************************************************************
 619  ****************************************************************************
 620  **
 621  ** avi header generation
 622  **
 623  ****************************************************************************
 624  ****************************************************************************/
 625 #define AVI_BOX_ENTER( fcc ) \
 626     buffer_out_t _bo_sav_; \
 627     bo_AddFCC( p_bo, fcc ); \
 628     _bo_sav_ = *p_bo; \
 629     bo_AddDWordLE( p_bo, 0 )
 630
 631 #define AVI_BOX_ENTER_LIST( fcc ) \
 632     AVI_BOX_ENTER( "LIST" ); \
 633     bo_AddFCC( p_bo, fcc )
 634
 635 #define AVI_BOX_EXIT( i_err ) \
 636     if( p_bo->i_buffer&0x01 ) bo_AddByte( p_bo, 0 ); \
 637     bo_AddDWordLE( &_bo_sav_, p_bo->i_buffer - _bo_sav_.i_buffer - 4 ); \
 638     return( i_err );
 639
 640 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 641                                buffer_out_t *p_bo )
 642 {
 643     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 644     avi_stream_t    *p_video = NULL;
 645     int         i_stream;
 646     uint32_t    i_microsecperframe;
 647     int         i_maxbytespersec;
 648     int         i_totalframes;
 649     AVI_BOX_ENTER( "avih" );
 650
 651     if( p_sys->i_stream_video >= 0 )
 652     {
 653         p_video = &p_sys->stream[p_sys->i_stream_video];
 654         if( p_video->i_frames <= 0 )
 655         {
 656         //    p_video = NULL;
 657         }
 658     }
 659
 660     if( p_video )
 661     {
 662         i_microsecperframe =
 663             (uint32_t)( (float)1000000 /
 664                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 665         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 666     }
 667     else
 668     {
 669         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 670         i_microsecperframe = 0;
 671         i_totalframes = 0;
 672     }
 673
 674     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 675     {
 676         if( p_sys->stream[i_stream].i_duration > 0 )
 677         {
 678             i_maxbytespersec +=
 679                 p_sys->stream[i_stream].i_totalsize /
 680                 p_sys->stream[i_stream].i_duration;
 681         }
 682     }
 683
 684     bo_AddDWordLE( p_bo, i_microsecperframe );
 685     bo_AddDWordLE( p_bo, i_maxbytespersec );
 686     bo_AddDWordLE( p_bo, 0 );                   /* padding */
 687     bo_AddDWordLE( p_bo, AVIF_TRUSTCKTYPE |
 688                          AVIF_HASINDEX |
 689                          AVIF_ISINTERLEAVED );  /* flags */
 690     bo_AddDWordLE( p_bo, i_totalframes );
 691     bo_AddDWordLE( p_bo, 0 );                   /* initial frame */
 692     bo_AddDWordLE( p_bo, p_sys->i_streams );    /* streams count */
 693     bo_AddDWordLE( p_bo, 1024 * 1024 );         /* suggested buffer size */
 694     if( p_video )
 695     {
 696         bo_AddDWordLE( p_bo, p_video->p_bih->biWidth );
 697         bo_AddDWordLE( p_bo, p_video->p_bih->biHeight );
 698     }
 699     else
 700     {
 701         bo_AddDWordLE( p_bo, 0 );
 702         bo_AddDWordLE( p_bo, 0 );
 703     }
 704     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 705     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 706     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 707     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 708
 709     AVI_BOX_EXIT( 0 );
 710 }
 711 static int avi_HeaderAdd_strh( buffer_out_t *p_bo, avi_stream_t *p_stream )
 712 {
 713     AVI_BOX_ENTER( "strh" );
 714
 715     switch( p_stream->i_cat )
 716     {
 717         case VIDEO_ES:
 718             {
 719                 bo_AddFCC( p_bo, "vids" );
 720                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 721                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 722                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 723                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 724                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 725                 bo_AddDWordLE( p_bo, 1000 );/* scale */
 726                 bo_AddDWordLE( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 727                 bo_AddDWordLE( p_bo, 0 );   /* start */
 728                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 729                 bo_AddDWordLE( p_bo, 1024 * 1024 );
 730                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 731                 bo_AddDWordLE( p_bo, 0 );   /* samplesize */
 732                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 733                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 734                 bo_AddWordLE(  p_bo, p_stream->p_bih->biWidth );
 735                 bo_AddWordLE(  p_bo, p_stream->p_bih->biHeight );
 736             }
 737             break;
 738         case AUDIO_ES:
 739             {
 740                 int i_rate, i_scale, i_samplesize;
 741
 742                 i_samplesize = p_stream->p_wf->nBlockAlign;
 743                 if( i_samplesize > 1 )
 744                 {
 745                     i_scale = i_samplesize;
 746                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 747                 }
 748                 else
 749                 {
 750                     i_samplesize = 1;
 751                     i_scale = 1000;
 752                     i_rate = 1000 * p_stream->i_bitrate / 8;
 753                 }
 754                 bo_AddFCC( p_bo, "auds" );
 755                 bo_AddDWordLE( p_bo, 0 );   /* tag */
 756                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 757                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 758                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 759                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 760                 bo_AddDWordLE( p_bo, i_scale );/* scale */
 761                 bo_AddDWordLE( p_bo, i_rate );
 762                 bo_AddDWordLE( p_bo, 0 );   /* start */
 763                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 764                 bo_AddDWordLE( p_bo, 10 * 1024 );
 765                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 766                 bo_AddDWordLE( p_bo, i_samplesize );
 767                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 768                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 769                 bo_AddWordLE(  p_bo, 0 );
 770                 bo_AddWordLE(  p_bo, 0 );
 771             }
 772             break;
 773     }
 774
 775     AVI_BOX_EXIT( 0 );
 776 }
 777
 778 static int avi_HeaderAdd_strf( buffer_out_t *p_bo, avi_stream_t *p_stream )
 779 {
 780     AVI_BOX_ENTER( "strf" );
 781
 782     switch( p_stream->i_cat )
 783     {
 784         case AUDIO_ES:
 785             bo_AddWordLE( p_bo, p_stream->p_wf->wFormatTag );
 786             bo_AddWordLE( p_bo, p_stream->p_wf->nChannels );
 787             bo_AddDWordLE( p_bo, p_stream->p_wf->nSamplesPerSec );
 788             bo_AddDWordLE( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 789             bo_AddWordLE( p_bo, p_stream->p_wf->nBlockAlign );
 790             bo_AddWordLE( p_bo, p_stream->p_wf->wBitsPerSample );
 791             bo_AddWordLE( p_bo, p_stream->p_wf->cbSize );
 792             bo_AddMem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 793             break;
 794         case VIDEO_ES:
 795             bo_AddDWordLE( p_bo, p_stream->p_bih->biSize );
 796             bo_AddDWordLE( p_bo, p_stream->p_bih->biWidth );
 797             bo_AddDWordLE( p_bo, p_stream->p_bih->biHeight );
 798             bo_AddWordLE( p_bo, p_stream->p_bih->biPlanes );
 799             bo_AddWordLE( p_bo, p_stream->p_bih->biBitCount );
 800             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 801             {
 802                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 803             }
 804             else
 805             {
 806                 bo_AddDWordLE( p_bo, p_stream->p_bih->biCompression );
 807             }
 808             bo_AddDWordLE( p_bo, p_stream->p_bih->biSizeImage );
 809             bo_AddDWordLE( p_bo, p_stream->p_bih->biXPelsPerMeter );
 810             bo_AddDWordLE( p_bo, p_stream->p_bih->biYPelsPerMeter );
 811             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrUsed );
 812             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrImportant );
 813             bo_AddMem( p_bo,
 814                        p_stream->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 815                        (uint8_t*)&p_stream->p_bih[1] );
 816             break;
 817     }
 818
 819     AVI_BOX_EXIT( 0 );
 820 }
 821
 822 static int avi_HeaderAdd_strl( buffer_out_t *p_bo, avi_stream_t *p_stream )
 823 {
 824     AVI_BOX_ENTER_LIST( "strl" );
 825
 826     avi_HeaderAdd_strh( p_bo, p_stream );
 827     avi_HeaderAdd_strf( p_bo, p_stream );
 828
 829     AVI_BOX_EXIT( 0 );
 830 }
 831
 832 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 833 {
 834     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 835     block_t       *p_hdr;
 836     int                 i_stream;
 837     int                 i_junk;
 838     buffer_out_t        bo;
 839
 840     p_hdr = block_New( p_mux, HDR_SIZE );
 841     memset( p_hdr->p_buffer, 0, HDR_SIZE );
 842
 843     bo_Init( &bo, HDR_SIZE, p_hdr->p_buffer );
 844
 845     bo_AddFCC( &bo, "RIFF" );
 846     bo_AddDWordLE( &bo, p_sys->i_movi_size + HDR_SIZE - 8 + p_sys->i_idx1_size );
 847     bo_AddFCC( &bo, "AVI " );
 848
 849     bo_AddFCC( &bo, "LIST" );
 850     /* HDRL List size should exclude following data in HDR buffer
 851      *  -12 (RIFF, RIFF size, 'AVI ' tag),
 852      *  - 8 (hdr1 LIST tag and its size)
 853      *  - 12 (movi LIST tag, size, 'movi' listType )
 854      */
 855     bo_AddDWordLE( &bo, HDR_SIZE - 12 - 8 - 12);
 856     bo_AddFCC( &bo, "hdrl" );
 857
 858     avi_HeaderAdd_avih( p_mux, &bo );
 859     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 860     {
 861         avi_HeaderAdd_strl( &bo, &p_sys->stream[i_stream] );
 862     }
 863
 864     i_junk = HDR_SIZE - bo.i_buffer - 8 - 12;
 865     bo_AddFCC( &bo, "JUNK" );
 866     bo_AddDWordLE( &bo, i_junk );
 867
 868     bo.i_buffer += i_junk;
 869     bo_AddFCC( &bo, "LIST" );
 870     bo_AddDWordLE( &bo, p_sys->i_movi_size + 4 );
 871     bo_AddFCC( &bo, "movi" );
 872
 873     return( p_hdr );
 874 }
 875
 876 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 877 {
 878     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 879     block_t             *p_idx1;
 880     uint32_t            i_idx1_size;
 881     buffer_out_t        bo;
 882
 883     i_idx1_size = 16 * p_sys->idx1.i_entry_count + 8;
 884
 885     p_idx1 = block_New( p_mux, i_idx1_size);
 886     memset( p_idx1->p_buffer, 0, i_idx1_size);
 887
 888     bo_Init( &bo, i_idx1_size, p_idx1->p_buffer );
 889     bo_AddFCC( &bo, "idx1" );
 890     bo_AddDWordLE( &bo, i_idx1_size - 8);
 891
 892     for( unsigned i = 0; i < p_sys->idx1.i_entry_count; i++ )
 893     {
 894         bo_AddFCC( &bo, p_sys->idx1.entry[i].fcc );
 895         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_flags );
 896         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_pos );
 897         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_length );
 898     }
 899
 900     return( p_idx1 );
 901 }
 902