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

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 VLC authors and 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 it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * 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 #include <vlc_bits.h>
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 static int  Open   ( vlc_object_t * );
  45 static void Close  ( vlc_object_t * );
  46
  47 #define SOUT_CFG_PREFIX "sout-avi-"
  48
  49 #define CFG_ARTIST_TEXT     N_("Artist")
  50 #define CFG_DATE_TEXT       N_("Date")
  51 #define CFG_GENRE_TEXT      N_("Genre")
  52 #define CFG_COPYRIGHT_TEXT  N_("Copyright")
  53 #define CFG_COMMENT_TEXT    N_("Comment")
  54 #define CFG_NAME_TEXT       N_("Name")
  55 #define CFG_SUBJECT_TEXT    N_("Subject")
  56 #define CFG_ENCODER_TEXT    N_("Encoder")
  57 #define CFG_KEYWORDS_TEXT   N_("Keywords")
  58
  59 vlc_module_begin ()
  60     set_description( N_("AVI muxer") )
  61     set_category( CAT_SOUT )
  62     set_subcategory( SUBCAT_SOUT_MUX )
  63     set_capability( "sout mux", 5 )
  64     add_shortcut( "avi" )
  65
  66     add_string( SOUT_CFG_PREFIX "artist", NULL,    CFG_ARTIST_TEXT, NULL, true )
  67     add_string( SOUT_CFG_PREFIX "date",   NULL,    CFG_DATE_TEXT, NULL, true )
  68     add_string( SOUT_CFG_PREFIX "genre",  NULL,    CFG_GENRE_TEXT, NULL, true )
  69     add_string( SOUT_CFG_PREFIX "copyright", NULL, CFG_COPYRIGHT_TEXT, NULL, true )
  70     add_string( SOUT_CFG_PREFIX "comment", NULL,   CFG_COMMENT_TEXT, NULL, true )
  71     add_string( SOUT_CFG_PREFIX "name", NULL,      CFG_NAME_TEXT, NULL, true )
  72     add_string( SOUT_CFG_PREFIX "subject", NULL,   CFG_SUBJECT_TEXT, NULL, true )
  73     add_string( SOUT_CFG_PREFIX "encoder",
  74                 "VLC Media Player - " VERSION_MESSAGE,
  75                                                    CFG_ENCODER_TEXT, NULL, true )
  76     add_string( SOUT_CFG_PREFIX "keywords", NULL,  CFG_KEYWORDS_TEXT, NULL, true )
  77
  78     set_callbacks( Open, Close )
  79 vlc_module_end ()
  80
  81
  82 /*****************************************************************************
  83  * Local prototypes
  84  *****************************************************************************/
  85 static int Control( sout_mux_t *, int, va_list );
  86 static int AddStream( sout_mux_t *, sout_input_t * );
  87 static void DelStream( sout_mux_t *, sout_input_t * );
  88 static int Mux      ( sout_mux_t * );
  89
  90 typedef struct avi_stream_s
  91 {
  92     int i_cat;
  93
  94     char fcc[4];
  95
  96     mtime_t i_duration;       // in µs
  97
  98     int     i_frames;        // total frame count
  99     int64_t i_totalsize;    // total stream size
 100
 101     float   f_fps;
 102     int     i_bitrate;
 103
 104     VLC_BITMAPINFOHEADER    *p_bih;
 105     WAVEFORMATEX            *p_wf;
 106
 107 } avi_stream_t;
 108
 109 typedef struct avi_idx1_entry_s
 110 {
 111     char     fcc[4];
 112     uint32_t i_flags;
 113     uint32_t i_pos;
 114     uint32_t i_length;
 115
 116 } avi_idx1_entry_t;
 117
 118 typedef struct avi_idx1_s
 119 {
 120     unsigned int i_entry_count;
 121     unsigned int i_entry_max;
 122
 123     avi_idx1_entry_t *entry;
 124 } avi_idx1_t;
 125
 126 struct sout_mux_sys_t
 127 {
 128     bool b_write_header;
 129
 130     int i_streams;
 131     int i_stream_video;
 132
 133     off_t i_movi_size;
 134     avi_stream_t stream[100];
 135
 136     avi_idx1_t idx1;
 137     off_t i_idx1_size;
 138
 139 };
 140
 141 #define HDR_BASE_SIZE 512 /* single video&audio ~ 400 bytes header */
 142
 143 /* Flags in avih */
 144 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 145 #define AVIF_ISINTERLEAVED  0x00000100
 146 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 147
 148 /* Flags for index */
 149 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 150
 151
 152 static block_t *avi_HeaderCreateRIFF( sout_mux_t * );
 153 static block_t *avi_HeaderCreateidx1( sout_mux_t * );
 154
 155 static void SetFCC( uint8_t *p, char *fcc )
 156 {
 157     memcpy( p, fcc, 4 );
 158 }
 159
 160 /*****************************************************************************
 161  * Open:
 162  *****************************************************************************/
 163 static int Open( vlc_object_t *p_this )
 164 {
 165     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 166     sout_mux_sys_t  *p_sys;
 167
 168     msg_Dbg( p_mux, "AVI muxer opened" );
 169
 170     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 171     if( !p_sys )
 172         return VLC_ENOMEM;
 173     p_sys->i_streams = 0;
 174     p_sys->i_stream_video = -1;
 175     p_sys->i_movi_size = 0;
 176
 177     p_sys->idx1.i_entry_count = 0;
 178     p_sys->idx1.i_entry_max = 10000;
 179     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 180                                 sizeof( avi_idx1_entry_t ) );
 181     if( !p_sys->idx1.entry )
 182     {
 183         free( p_sys );
 184         return VLC_ENOMEM;
 185     }
 186     p_sys->b_write_header = true;
 187
 188
 189     p_mux->pf_control   = Control;
 190     p_mux->pf_addstream = AddStream;
 191     p_mux->pf_delstream = DelStream;
 192     p_mux->pf_mux       = Mux;
 193     p_mux->p_sys        = p_sys;
 194
 195     return VLC_SUCCESS;
 196 }
 197
 198 /*****************************************************************************
 199  * Close:
 200  *****************************************************************************/
 201 static void Close( vlc_object_t * p_this )
 202 {
 203     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 204     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 205
 206     block_t       *p_hdr, *p_idx1;
 207     int                 i_stream;
 208
 209     msg_Dbg( p_mux, "AVI muxer closed" );
 210
 211     /* first create idx1 chunk (write at the end of the stream */
 212     p_idx1 = avi_HeaderCreateidx1( p_mux );
 213     p_sys->i_idx1_size = p_idx1->i_buffer;
 214     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 215
 216     /* calculate some value for headers creations */
 217     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 218     {
 219         avi_stream_t *p_stream;
 220
 221         p_stream = &p_sys->stream[i_stream];
 222
 223         p_stream->f_fps = 25;
 224         if( p_stream->i_duration > 0 )
 225         {
 226             p_stream->f_fps = (float)p_stream->i_frames /
 227                               ( (float)p_stream->i_duration /
 228                                 (float)1000000 );
 229         }
 230         p_stream->i_bitrate = 128 * 1024;
 231         if( p_stream->i_duration > 0 )
 232         {
 233             p_stream->i_bitrate =
 234                 8 * (uint64_t)1000000 *
 235                     (uint64_t)p_stream->i_totalsize /
 236                     (uint64_t)p_stream->i_duration;
 237         }
 238         msg_Info( p_mux, "stream[%d] duration:%"PRId64" totalsize:%"PRId64
 239                   " frames:%d fps:%f KiB/s:%d",
 240                   i_stream,
 241                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 242                   p_stream->i_totalsize,
 243                   p_stream->i_frames,
 244                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 245     }
 246
 247     p_hdr = avi_HeaderCreateRIFF( p_mux );
 248     sout_AccessOutSeek( p_mux->p_access, 0 );
 249     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 250
 251     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 252     {
 253         avi_stream_t *p_stream;
 254         p_stream = &p_sys->stream[i_stream];
 255         free( p_stream->p_bih );
 256         free( p_stream->p_wf );
 257     }
 258     free( p_sys->idx1.entry );
 259     free( p_sys );
 260 }
 261
 262 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 263 {
 264     VLC_UNUSED(p_mux);
 265     bool *pb_bool;
 266     char **ppsz;
 267
 268    switch( i_query )
 269    {
 270        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 271            pb_bool = (bool*)va_arg( args, bool * );
 272            *pb_bool = false;
 273            return VLC_SUCCESS;
 274
 275        case MUX_GET_ADD_STREAM_WAIT:
 276            pb_bool = (bool*)va_arg( args, bool * );
 277            *pb_bool = true;
 278            return VLC_SUCCESS;
 279
 280        case MUX_GET_MIME:
 281            ppsz = (char**)va_arg( args, char ** );
 282            *ppsz = strdup( "video/avi" );
 283            return VLC_SUCCESS;
 284
 285         default:
 286             return VLC_EGENERIC;
 287    }
 288 }
 289
 290 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 291 {
 292     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 293     avi_stream_t    *p_stream;
 294
 295     if( p_sys->i_streams >= 100 )
 296     {
 297         msg_Err( p_mux, "too many streams" );
 298         return VLC_EGENERIC;
 299     }
 300
 301     msg_Dbg( p_mux, "adding input" );
 302     p_input->p_sys = malloc( sizeof( int ) );
 303     if( !p_input->p_sys )
 304         return VLC_ENOMEM;
 305
 306     *((int*)p_input->p_sys) = p_sys->i_streams;
 307     p_stream = &p_sys->stream[p_sys->i_streams];
 308
 309     switch( p_input->p_fmt->i_cat )
 310     {
 311         case AUDIO_ES:
 312             p_stream->i_cat = AUDIO_ES;
 313             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 314             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 315             p_stream->fcc[2] = 'w';
 316             p_stream->fcc[3] = 'b';
 317
 318             p_stream->p_bih = NULL;
 319
 320             WAVEFORMATEX *p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 321                                   p_input->p_fmt->i_extra );
 322             if( !p_wf )
 323             {
 324                 free( p_input->p_sys );
 325                 p_input->p_sys = NULL;
 326                 return VLC_ENOMEM;
 327             }
 328
 329             p_wf->cbSize = p_input->p_fmt->i_extra;
 330             if( p_wf->cbSize > 0 )
 331             {
 332                 memcpy( &p_wf[1],
 333                         p_input->p_fmt->p_extra,
 334                         p_input->p_fmt->i_extra );
 335             }
 336             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 337             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 338             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 339             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 340             p_wf->wBitsPerSample = 0;
 341
 342             switch( p_input->p_fmt->i_codec )
 343             {
 344                 case VLC_CODEC_A52:
 345                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 346                     p_wf->nBlockAlign= 1;
 347                     break;
 348                 case VLC_CODEC_MP3:
 349                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 350                     p_wf->nBlockAlign= 1;
 351                     break;
 352                 case VLC_CODEC_WMA1:
 353                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 354                     break;
 355                 case VLC_CODEC_WMA2:
 356                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 357                     break;
 358                 case VLC_CODEC_WMAP:
 359                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 360                     break;
 361                 case VLC_CODEC_WMAL:
 362                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 363                     break;
 364                     /* raw codec */
 365                 case VLC_CODEC_U8:
 366                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 367                     p_wf->nBlockAlign= p_wf->nChannels;
 368                     p_wf->wBitsPerSample = 8;
 369                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 370                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 371                     break;
 372                 case VLC_CODEC_S16L:
 373                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 374                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 375                     p_wf->wBitsPerSample = 16;
 376                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 377                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 378                     break;
 379                 case VLC_CODEC_S24L:
 380                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 381                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 382                     p_wf->wBitsPerSample = 24;
 383                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 384                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 385                     break;
 386                 case VLC_CODEC_S32L:
 387                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 388                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 389                     p_wf->wBitsPerSample = 32;
 390                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 391                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 392                     break;
 393                 default:
 394                     free( p_wf );
 395                     free( p_input->p_sys );
 396                     p_input->p_sys = NULL;
 397                     return VLC_EGENERIC;
 398             }
 399             p_stream->p_wf = p_wf;
 400             break;
 401         case VIDEO_ES:
 402             p_stream->i_cat = VIDEO_ES;
 403             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 404             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 405             p_stream->fcc[2] = 'd';
 406             p_stream->fcc[3] = 'c';
 407             if( p_sys->i_stream_video < 0 )
 408             {
 409                 p_sys->i_stream_video = p_sys->i_streams;
 410             }
 411             p_stream->p_wf  = NULL;
 412             VLC_BITMAPINFOHEADER *p_bih = malloc( sizeof( VLC_BITMAPINFOHEADER ) +
 413                                                  p_input->p_fmt->i_extra );
 414             if( !p_bih )
 415             {
 416                 free( p_input->p_sys );
 417                 p_input->p_sys = NULL;
 418                 return VLC_ENOMEM;
 419             }
 420
 421             p_bih->biSize  = sizeof( VLC_BITMAPINFOHEADER ) +
 422                              p_input->p_fmt->i_extra;
 423             if( p_input->p_fmt->i_extra > 0 )
 424             {
 425                 memcpy( &p_bih[1],
 426                         p_input->p_fmt->p_extra,
 427                         p_input->p_fmt->i_extra );
 428             }
 429             p_bih->biWidth = p_input->p_fmt->video.i_width;
 430             p_bih->biHeight= p_input->p_fmt->video.i_height;
 431             p_bih->biPlanes= 1;
 432             p_bih->biBitCount       = 24;
 433             p_bih->biSizeImage      = 0;
 434             p_bih->biXPelsPerMeter  = 0;
 435             p_bih->biYPelsPerMeter  = 0;
 436             p_bih->biClrUsed        = 0;
 437             p_bih->biClrImportant   = 0;
 438             switch( p_input->p_fmt->i_codec )
 439             {
 440                 case VLC_CODEC_MP4V:
 441                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 442                     break;
 443                 default:
 444                     p_bih->biCompression = p_input->p_fmt->i_original_fourcc ?: p_input->p_fmt->i_codec;
 445                     break;
 446             }
 447             p_stream->p_bih = p_bih;
 448             break;
 449         default:
 450             free( p_input->p_sys );
 451             p_input->p_sys = NULL;
 452             return( VLC_EGENERIC );
 453     }
 454     p_stream->i_totalsize = 0;
 455     p_stream->i_frames    = 0;
 456     p_stream->i_duration  = 0;
 457
 458     /* fixed later */
 459     p_stream->f_fps = 25;
 460     p_stream->i_bitrate = 128 * 1024;
 461
 462     p_sys->i_streams++;
 463     return( VLC_SUCCESS );
 464 }
 465
 466 static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 467 {
 468     msg_Dbg( p_mux, "removing input" );
 469
 470     free( p_input->p_sys );
 471 }
 472
 473 static int Mux      ( sout_mux_t *p_mux )
 474 {
 475     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 476     avi_stream_t    *p_stream;
 477     int i_stream, i;
 478
 479     if( p_sys->b_write_header )
 480     {
 481         block_t *p_hdr;
 482
 483         msg_Dbg( p_mux, "writing header" );
 484
 485         p_hdr = avi_HeaderCreateRIFF( p_mux );
 486         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 487
 488         p_sys->b_write_header = false;
 489     }
 490
 491     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 492     {
 493         int i_count;
 494         block_fifo_t *p_fifo;
 495
 496         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 497         p_stream = &p_sys->stream[i_stream];
 498
 499         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 500         i_count = block_FifoCount(  p_fifo );
 501         while( i_count > 1 )
 502         {
 503             avi_idx1_entry_t *p_idx;
 504             block_t *p_data;
 505
 506             p_data = block_FifoGet( p_fifo );
 507             if( block_FifoCount( p_fifo ) > 0 )
 508             {
 509                 block_t *p_next = block_FifoShow( p_fifo );
 510                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 511             }
 512
 513
 514             if( p_stream->i_frames == 0 &&p_stream->i_cat == VIDEO_ES )
 515             {
 516                /* Add header present at the end of BITMAP info header
 517                   to first frame in case of XVID */
 518                if( p_stream->p_bih->biCompression
 519                                == VLC_FOURCC( 'X', 'V', 'I', 'D' ) )
 520                {
 521                    int i_header_length =
 522                        p_stream->p_bih->biSize - sizeof(VLC_BITMAPINFOHEADER);
 523                    p_data = block_Realloc( p_data,
 524                                    i_header_length, p_data->i_buffer );
 525                    if( !p_data)
 526                        return VLC_ENOMEM;
 527                    memcpy(p_data->p_buffer,&p_stream->p_bih[1], i_header_length);
 528                }
 529             }
 530
 531             p_stream->i_frames++;
 532             if( p_data->i_length < 0 )
 533             {
 534                 msg_Warn( p_mux, "argg length < 0 l" );
 535                 block_Release( p_data );
 536                 i_count--;
 537                 continue;
 538             }
 539             p_stream->i_duration  += p_data->i_length;
 540             p_stream->i_totalsize += p_data->i_buffer;
 541
 542             /* add idx1 entry for this frame */
 543             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 544             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 545             p_idx->i_flags = 0;
 546             if( ( p_data->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 || ( p_data->i_flags & BLOCK_FLAG_TYPE_I ) )
 547                 p_idx->i_flags = AVIIF_KEYFRAME;
 548             p_idx->i_pos   = p_sys->i_movi_size + 4;
 549             p_idx->i_length= p_data->i_buffer;
 550             p_sys->idx1.i_entry_count++;
 551             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 552             {
 553                 p_sys->idx1.i_entry_max += 10000;
 554                 p_sys->idx1.entry = xrealloc( p_sys->idx1.entry,
 555                        p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 556             }
 557
 558             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 559             if( p_data )
 560             {
 561                 SetFCC( p_data->p_buffer, p_stream->fcc );
 562                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 563
 564                 if( p_data->i_buffer & 0x01 )
 565                 {
 566                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 567                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 568                 }
 569
 570                 p_sys->i_movi_size += p_data->i_buffer;
 571                 sout_AccessOutWrite( p_mux->p_access, p_data );
 572             }
 573
 574             i_count--;
 575         }
 576
 577     }
 578     return( 0 );
 579 }
 580
 581 /****************************************************************************
 582  ****************************************************************************
 583  **
 584  ** avi header generation
 585  **
 586  ****************************************************************************
 587  ****************************************************************************/
 588 #define AVI_BOX_ENTER( fcc ) \
 589     int i_datasize_offset; \
 590     bo_add_fourcc( p_bo, fcc ); \
 591     i_datasize_offset = p_bo->b->i_buffer; \
 592     bo_add_32le( p_bo, 0 )
 593
 594 #define AVI_BOX_ENTER_LIST( fcc ) \
 595     AVI_BOX_ENTER( "LIST" ); \
 596     bo_add_fourcc( p_bo, fcc )
 597
 598 #define AVI_BOX_EXIT( i_err ) \
 599     if( p_bo->b->i_buffer&0x01 ) bo_add_8( p_bo, 0 ); \
 600     bo_set_32le( p_bo, i_datasize_offset, p_bo->b->i_buffer - i_datasize_offset - 4 ); \
 601     return( i_err );
 602
 603 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 604                                bo_t *p_bo )
 605 {
 606     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 607     avi_stream_t    *p_video = NULL;
 608     int         i_stream;
 609     uint32_t    i_microsecperframe;
 610     int         i_maxbytespersec;
 611     int         i_totalframes;
 612     AVI_BOX_ENTER( "avih" );
 613
 614     if( p_sys->i_stream_video >= 0 )
 615     {
 616         p_video = &p_sys->stream[p_sys->i_stream_video];
 617         if( p_video->i_frames <= 0 )
 618         {
 619         //    p_video = NULL;
 620         }
 621     }
 622
 623     if( p_video )
 624     {
 625         i_microsecperframe =
 626             (uint32_t)( (float)1000000 /
 627                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 628         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 629     }
 630     else
 631     {
 632         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 633         i_microsecperframe = 0;
 634         i_totalframes = 0;
 635     }
 636
 637     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 638     {
 639         if( p_sys->stream[i_stream].i_duration > 0 )
 640         {
 641             i_maxbytespersec +=
 642                 p_sys->stream[i_stream].i_totalsize /
 643                 p_sys->stream[i_stream].i_duration;
 644         }
 645     }
 646
 647     bo_add_32le( p_bo, i_microsecperframe );
 648     bo_add_32le( p_bo, i_maxbytespersec );
 649     bo_add_32le( p_bo, 0 );                   /* padding */
 650     bo_add_32le( p_bo, AVIF_TRUSTCKTYPE |
 651                        AVIF_HASINDEX |
 652                        AVIF_ISINTERLEAVED );  /* flags */
 653     bo_add_32le( p_bo, i_totalframes );
 654     bo_add_32le( p_bo, 0 );                   /* initial frame */
 655     bo_add_32le( p_bo, p_sys->i_streams );    /* streams count */
 656     bo_add_32le( p_bo, 1024 * 1024 );         /* suggested buffer size */
 657     if( p_video )
 658     {
 659         bo_add_32le( p_bo, p_video->p_bih->biWidth );
 660         bo_add_32le( p_bo, p_video->p_bih->biHeight );
 661     }
 662     else
 663     {
 664         bo_add_32le( p_bo, 0 );
 665         bo_add_32le( p_bo, 0 );
 666     }
 667     bo_add_32le( p_bo, 0 );                   /* ???? */
 668     bo_add_32le( p_bo, 0 );                   /* ???? */
 669     bo_add_32le( p_bo, 0 );                   /* ???? */
 670     bo_add_32le( p_bo, 0 );                   /* ???? */
 671
 672     AVI_BOX_EXIT( 0 );
 673 }
 674 static int avi_HeaderAdd_strh( bo_t *p_bo, avi_stream_t *p_stream )
 675 {
 676     AVI_BOX_ENTER( "strh" );
 677
 678     switch( p_stream->i_cat )
 679     {
 680         case VIDEO_ES:
 681             {
 682                 bo_add_fourcc( p_bo, "vids" );
 683                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 684                 bo_add_32le( p_bo, 0 );   /* flags */
 685                 bo_add_16le(  p_bo, 0 );   /* priority */
 686                 bo_add_16le(  p_bo, 0 );   /* langage */
 687                 bo_add_32le( p_bo, 0 );   /* initial frame */
 688                 bo_add_32le( p_bo, 1000 );/* scale */
 689                 bo_add_32le( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 690                 bo_add_32le( p_bo, 0 );   /* start */
 691                 bo_add_32le( p_bo, p_stream->i_frames );
 692                 bo_add_32le( p_bo, 1024 * 1024 );
 693                 bo_add_32le( p_bo, -1 );  /* quality */
 694                 bo_add_32le( p_bo, 0 );   /* samplesize */
 695                 bo_add_16le(  p_bo, 0 );   /* ??? */
 696                 bo_add_16le(  p_bo, 0 );   /* ??? */
 697                 bo_add_16le(  p_bo, p_stream->p_bih->biWidth );
 698                 bo_add_16le(  p_bo, p_stream->p_bih->biHeight );
 699             }
 700             break;
 701         case AUDIO_ES:
 702             {
 703                 int i_rate, i_scale, i_samplesize;
 704
 705                 i_samplesize = p_stream->p_wf->nBlockAlign;
 706                 if( i_samplesize > 1 )
 707                 {
 708                     i_scale = i_samplesize;
 709                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 710                 }
 711                 else
 712                 {
 713                     i_samplesize = 1;
 714                     i_scale = 1000;
 715                     i_rate = 1000 * p_stream->i_bitrate / 8;
 716                 }
 717                 bo_add_fourcc( p_bo, "auds" );
 718                 bo_add_32le( p_bo, 0 );   /* tag */
 719                 bo_add_32le( p_bo, 0 );   /* flags */
 720                 bo_add_16le(  p_bo, 0 );   /* priority */
 721                 bo_add_16le(  p_bo, 0 );   /* langage */
 722                 bo_add_32le( p_bo, 0 );   /* initial frame */
 723                 bo_add_32le( p_bo, i_scale );/* scale */
 724                 bo_add_32le( p_bo, i_rate );
 725                 bo_add_32le( p_bo, 0 );   /* start */
 726                 bo_add_32le( p_bo, p_stream->i_frames );
 727                 bo_add_32le( p_bo, 10 * 1024 );
 728                 bo_add_32le( p_bo, -1 );  /* quality */
 729                 bo_add_32le( p_bo, i_samplesize );
 730                 bo_add_16le(  p_bo, 0 );   /* ??? */
 731                 bo_add_16le(  p_bo, 0 );   /* ??? */
 732                 bo_add_16le(  p_bo, 0 );
 733                 bo_add_16le(  p_bo, 0 );
 734             }
 735             break;
 736     }
 737
 738     AVI_BOX_EXIT( 0 );
 739 }
 740
 741 static int avi_HeaderAdd_strf( bo_t *p_bo, avi_stream_t *p_stream )
 742 {
 743     AVI_BOX_ENTER( "strf" );
 744
 745     switch( p_stream->i_cat )
 746     {
 747         case AUDIO_ES:
 748             bo_add_16le( p_bo, p_stream->p_wf->wFormatTag );
 749             bo_add_16le( p_bo, p_stream->p_wf->nChannels );
 750             bo_add_32le( p_bo, p_stream->p_wf->nSamplesPerSec );
 751             bo_add_32le( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 752             bo_add_16le( p_bo, p_stream->p_wf->nBlockAlign );
 753             bo_add_16le( p_bo, p_stream->p_wf->wBitsPerSample );
 754             bo_add_16le( p_bo, p_stream->p_wf->cbSize );
 755             bo_add_mem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 756             break;
 757         case VIDEO_ES:
 758             bo_add_32le( p_bo, p_stream->p_bih->biSize );
 759             bo_add_32le( p_bo, p_stream->p_bih->biWidth );
 760             bo_add_32le( p_bo, p_stream->p_bih->biHeight );
 761             bo_add_16le( p_bo, p_stream->p_bih->biPlanes );
 762             bo_add_16le( p_bo, p_stream->p_bih->biBitCount );
 763             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 764             {
 765                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 766             }
 767             else
 768             {
 769                 bo_add_32le( p_bo, p_stream->p_bih->biCompression );
 770             }
 771             bo_add_32le( p_bo, p_stream->p_bih->biSizeImage );
 772             bo_add_32le( p_bo, p_stream->p_bih->biXPelsPerMeter );
 773             bo_add_32le( p_bo, p_stream->p_bih->biYPelsPerMeter );
 774             bo_add_32le( p_bo, p_stream->p_bih->biClrUsed );
 775             bo_add_32le( p_bo, p_stream->p_bih->biClrImportant );
 776             bo_add_mem( p_bo,
 777                         p_stream->p_bih->biSize - sizeof( VLC_BITMAPINFOHEADER ),
 778                         (uint8_t*)&p_stream->p_bih[1] );
 779             break;
 780     }
 781
 782     AVI_BOX_EXIT( 0 );
 783 }
 784
 785 static int avi_HeaderAdd_strl( bo_t *p_bo, avi_stream_t *p_stream )
 786 {
 787     AVI_BOX_ENTER_LIST( "strl" );
 788
 789     avi_HeaderAdd_strh( p_bo, p_stream );
 790     avi_HeaderAdd_strf( p_bo, p_stream );
 791
 792     AVI_BOX_EXIT( 0 );
 793 }
 794
 795 static int avi_HeaderAdd_meta( bo_t *p_bo, const char psz_meta[4],
 796                                const char *psz_data )
 797 {
 798     if ( psz_data == NULL ) return 1;
 799     const char *psz = psz_data;
 800     AVI_BOX_ENTER( psz_meta );
 801     while (*psz) bo_add_8( p_bo, *psz++ );
 802     bo_add_8( p_bo, 0 );
 803     AVI_BOX_EXIT( 0 );
 804 }
 805
 806 static int avi_HeaderAdd_INFO( sout_mux_t *p_mux, bo_t *p_bo )
 807 {
 808     char *psz;
 809
 810 #define APPLY_META(var, fourcc) \
 811     psz = var_InheritString( p_mux, SOUT_CFG_PREFIX var );\
 812     if ( psz )\
 813     {\
 814         avi_HeaderAdd_meta( p_bo, fourcc, psz );\
 815         free( psz );\
 816     }
 817
 818     AVI_BOX_ENTER_LIST( "INFO" );
 819
 820     APPLY_META( "artist",   "IART")
 821     APPLY_META( "comment",  "ICMT")
 822     APPLY_META( "copyright","ICOP")
 823     APPLY_META( "date",     "ICRD")
 824     APPLY_META( "genre",    "IGNR")
 825     APPLY_META( "name",     "INAM")
 826     APPLY_META( "keywords", "IKEY")
 827     APPLY_META( "subject",  "ISBJ")
 828     APPLY_META( "encoder",  "ISFT")
 829     /* Some are missing, but are they really useful ?? */
 830
 831 #undef APPLY_META
 832
 833     AVI_BOX_EXIT( 0 );
 834 }
 835
 836 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 837 {
 838     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 839     int                 i_stream;
 840     int                 i_junk;
 841     bo_t                bo;
 842
 843     struct
 844     {
 845         int i_riffsize;
 846         int i_hdrllistsize;
 847         int i_hdrldatastart;
 848     } offsets;
 849
 850     bo_init( &bo, HDR_BASE_SIZE );
 851
 852     bo_add_fourcc( &bo, "RIFF" );
 853     offsets.i_riffsize = bo.b->i_buffer;
 854     bo_add_32le( &bo, 0xEFBEADDE );
 855     bo_add_fourcc( &bo, "AVI " );
 856
 857     bo_add_fourcc( &bo, "LIST" );
 858     /* HDRL List size should exclude following data in HDR buffer
 859      *  -12 (RIFF, RIFF size, 'AVI ' tag),
 860      *  - 8 (hdr1 LIST tag and its size)
 861      *  - 12 (movi LIST tag, size, 'movi' listType )
 862      */
 863     offsets.i_hdrllistsize = bo.b->i_buffer;
 864     bo_add_32le( &bo, 0xEFBEADDE );
 865     bo_add_fourcc( &bo, "hdrl" );
 866     offsets.i_hdrldatastart = bo.b->i_buffer;
 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     /* align on 16 bytes */
 875     int i_align = ( ( bo.b->i_buffer + 12 + 0xE ) & ~ 0xF );
 876     i_junk = i_align - bo.b->i_buffer;
 877     bo_add_fourcc( &bo, "JUNK" );
 878     bo_add_32le( &bo, i_junk );
 879     for( int i=0; i< i_junk; i++ )
 880     {
 881         bo_add_8( &bo, 0 );
 882     }
 883
 884     /* Now set hdrl size */
 885     bo_set_32le( &bo, offsets.i_hdrllistsize,
 886                  bo.b->i_buffer - offsets.i_hdrldatastart );
 887
 888     avi_HeaderAdd_INFO( p_mux, &bo );
 889
 890     bo_add_fourcc( &bo, "LIST" );
 891     bo_add_32le( &bo, p_sys->i_movi_size + 4 );
 892     bo_add_fourcc( &bo, "movi" );
 893
 894     /* Now set RIFF size */
 895     bo_set_32le( &bo, offsets.i_riffsize, bo.b->i_buffer - 8
 896                  + p_sys->i_movi_size + p_sys->i_idx1_size );
 897
 898     return( bo.b );
 899 }
 900
 901 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 902 {
 903     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 904     uint32_t            i_idx1_size;
 905     bo_t                bo;
 906
 907     i_idx1_size = 16 * p_sys->idx1.i_entry_count + 8;
 908
 909     bo_init( &bo, i_idx1_size );
 910     memset( bo.b->p_buffer, 0, i_idx1_size);
 911
 912     bo_add_fourcc( &bo, "idx1" );
 913     bo_add_32le( &bo, i_idx1_size - 8);
 914
 915     for( unsigned i = 0; i < p_sys->idx1.i_entry_count; i++ )
 916     {
 917         bo_add_fourcc( &bo, p_sys->idx1.entry[i].fcc );
 918         bo_add_32le( &bo, p_sys->idx1.entry[i].i_flags );
 919         bo_add_32le( &bo, p_sys->idx1.entry[i].i_pos );
 920         bo_add_32le( &bo, p_sys->idx1.entry[i].i_length );
 921     }
 922
 923     return( bo.b );
 924 }