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             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 321                                       p_input->p_fmt->i_extra );
 322             if( !p_stream->p_wf )
 323             {
 324                 free( p_input->p_sys );
 325                 return VLC_ENOMEM;
 326             }
 327 #define p_wf p_stream->p_wf
 328             p_wf->cbSize = p_input->p_fmt->i_extra;
 329             if( p_wf->cbSize > 0 )
 330             {
 331                 memcpy( &p_wf[1],
 332                         p_input->p_fmt->p_extra,
 333                         p_input->p_fmt->i_extra );
 334             }
 335             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 336             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 337             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 338             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 339             p_wf->wBitsPerSample = 0;
 340
 341             switch( p_input->p_fmt->i_codec )
 342             {
 343                 case VLC_CODEC_A52:
 344                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 345                     p_wf->nBlockAlign= 1;
 346                     break;
 347                 case VLC_CODEC_MP3:
 348                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 349                     p_wf->nBlockAlign= 1;
 350                     break;
 351                 case VLC_CODEC_WMA1:
 352                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 353                     break;
 354                 case VLC_CODEC_WMA2:
 355                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 356                     break;
 357                 case VLC_CODEC_WMAP:
 358                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 359                     break;
 360                 case VLC_CODEC_WMAL:
 361                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 362                     break;
 363                     /* raw codec */
 364                 case VLC_CODEC_U8:
 365                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 366                     p_wf->nBlockAlign= p_wf->nChannels;
 367                     p_wf->wBitsPerSample = 8;
 368                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 369                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 370                     break;
 371                 case VLC_CODEC_S16L:
 372                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 373                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 374                     p_wf->wBitsPerSample = 16;
 375                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 376                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 377                     break;
 378                 case VLC_CODEC_S24L:
 379                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 380                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 381                     p_wf->wBitsPerSample = 24;
 382                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 383                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 384                     break;
 385                 case VLC_CODEC_S32L:
 386                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 387                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 388                     p_wf->wBitsPerSample = 32;
 389                     p_wf->nAvgBytesPerSec = (p_wf->wBitsPerSample/8) *
 390                                       p_wf->nSamplesPerSec * p_wf->nChannels;
 391                     break;
 392                 default:
 393                     return VLC_EGENERIC;
 394             }
 395 #undef p_wf
 396             break;
 397         case VIDEO_ES:
 398             p_stream->i_cat = VIDEO_ES;
 399             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 400             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 401             p_stream->fcc[2] = 'd';
 402             p_stream->fcc[3] = 'c';
 403             if( p_sys->i_stream_video < 0 )
 404             {
 405                 p_sys->i_stream_video = p_sys->i_streams;
 406             }
 407             p_stream->p_wf  = NULL;
 408             p_stream->p_bih = malloc( sizeof( VLC_BITMAPINFOHEADER ) +
 409                                       p_input->p_fmt->i_extra );
 410             if( !p_stream->p_bih )
 411             {
 412                 free( p_input->p_sys );
 413                 return VLC_ENOMEM;
 414             }
 415 #define p_bih p_stream->p_bih
 416             p_bih->biSize  = sizeof( VLC_BITMAPINFOHEADER ) +
 417                              p_input->p_fmt->i_extra;
 418             if( p_input->p_fmt->i_extra > 0 )
 419             {
 420                 memcpy( &p_bih[1],
 421                         p_input->p_fmt->p_extra,
 422                         p_input->p_fmt->i_extra );
 423             }
 424             p_bih->biWidth = p_input->p_fmt->video.i_width;
 425             p_bih->biHeight= p_input->p_fmt->video.i_height;
 426             p_bih->biPlanes= 1;
 427             p_bih->biBitCount       = 24;
 428             p_bih->biSizeImage      = 0;
 429             p_bih->biXPelsPerMeter  = 0;
 430             p_bih->biYPelsPerMeter  = 0;
 431             p_bih->biClrUsed        = 0;
 432             p_bih->biClrImportant   = 0;
 433             switch( p_input->p_fmt->i_codec )
 434             {
 435                 case VLC_CODEC_MP4V:
 436                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 437                     break;
 438                 default:
 439                     p_bih->biCompression = p_input->p_fmt->i_original_fourcc ?: p_input->p_fmt->i_codec;
 440                     break;
 441             }
 442 #undef p_bih
 443             break;
 444         default:
 445             return( VLC_EGENERIC );
 446     }
 447     p_stream->i_totalsize = 0;
 448     p_stream->i_frames    = 0;
 449     p_stream->i_duration  = 0;
 450
 451     /* fixed later */
 452     p_stream->f_fps = 25;
 453     p_stream->i_bitrate = 128 * 1024;
 454
 455     p_sys->i_streams++;
 456     return( VLC_SUCCESS );
 457 }
 458
 459 static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 460 {
 461     msg_Dbg( p_mux, "removing input" );
 462
 463     free( p_input->p_sys );
 464 }
 465
 466 static int Mux      ( sout_mux_t *p_mux )
 467 {
 468     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 469     avi_stream_t    *p_stream;
 470     int i_stream, i;
 471
 472     if( p_sys->b_write_header )
 473     {
 474         block_t *p_hdr;
 475
 476         msg_Dbg( p_mux, "writing header" );
 477
 478         p_hdr = avi_HeaderCreateRIFF( p_mux );
 479         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 480
 481         p_sys->b_write_header = false;
 482     }
 483
 484     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 485     {
 486         int i_count;
 487         block_fifo_t *p_fifo;
 488
 489         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 490         p_stream = &p_sys->stream[i_stream];
 491
 492         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 493         i_count = block_FifoCount(  p_fifo );
 494         while( i_count > 1 )
 495         {
 496             avi_idx1_entry_t *p_idx;
 497             block_t *p_data;
 498
 499             p_data = block_FifoGet( p_fifo );
 500             if( block_FifoCount( p_fifo ) > 0 )
 501             {
 502                 block_t *p_next = block_FifoShow( p_fifo );
 503                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 504             }
 505
 506
 507             if( p_stream->i_frames == 0 &&p_stream->i_cat == VIDEO_ES )
 508             {
 509                /* Add header present at the end of BITMAP info header
 510                   to first frame in case of XVID */
 511                if( p_stream->p_bih->biCompression
 512                                == VLC_FOURCC( 'X', 'V', 'I', 'D' ) )
 513                {
 514                    int i_header_length =
 515                        p_stream->p_bih->biSize - sizeof(VLC_BITMAPINFOHEADER);
 516                    p_data = block_Realloc( p_data,
 517                                    i_header_length, p_data->i_buffer );
 518                    if( !p_data)
 519                        return VLC_ENOMEM;
 520                    memcpy(p_data->p_buffer,&p_stream->p_bih[1], i_header_length);
 521                }
 522             }
 523
 524             p_stream->i_frames++;
 525             if( p_data->i_length < 0 )
 526             {
 527                 msg_Warn( p_mux, "argg length < 0 l" );
 528                 block_Release( p_data );
 529                 i_count--;
 530                 continue;
 531             }
 532             p_stream->i_duration  += p_data->i_length;
 533             p_stream->i_totalsize += p_data->i_buffer;
 534
 535             /* add idx1 entry for this frame */
 536             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 537             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 538             p_idx->i_flags = 0;
 539             if( ( p_data->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 || ( p_data->i_flags & BLOCK_FLAG_TYPE_I ) )
 540                 p_idx->i_flags = AVIIF_KEYFRAME;
 541             p_idx->i_pos   = p_sys->i_movi_size + 4;
 542             p_idx->i_length= p_data->i_buffer;
 543             p_sys->idx1.i_entry_count++;
 544             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 545             {
 546                 p_sys->idx1.i_entry_max += 10000;
 547                 p_sys->idx1.entry = xrealloc( p_sys->idx1.entry,
 548                        p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 549             }
 550
 551             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 552             if( p_data )
 553             {
 554                 SetFCC( p_data->p_buffer, p_stream->fcc );
 555                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 556
 557                 if( p_data->i_buffer & 0x01 )
 558                 {
 559                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 560                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 561                 }
 562
 563                 p_sys->i_movi_size += p_data->i_buffer;
 564                 sout_AccessOutWrite( p_mux->p_access, p_data );
 565             }
 566
 567             i_count--;
 568         }
 569
 570     }
 571     return( 0 );
 572 }
 573
 574 /****************************************************************************
 575  ****************************************************************************
 576  **
 577  ** avi header generation
 578  **
 579  ****************************************************************************
 580  ****************************************************************************/
 581 #define AVI_BOX_ENTER( fcc ) \
 582     int i_datasize_offset; \
 583     bo_add_fourcc( p_bo, fcc ); \
 584     i_datasize_offset = p_bo->b->i_buffer; \
 585     bo_add_32le( p_bo, 0 )
 586
 587 #define AVI_BOX_ENTER_LIST( fcc ) \
 588     AVI_BOX_ENTER( "LIST" ); \
 589     bo_add_fourcc( p_bo, fcc )
 590
 591 #define AVI_BOX_EXIT( i_err ) \
 592     if( p_bo->b->i_buffer&0x01 ) bo_add_8( p_bo, 0 ); \
 593     bo_set_32le( p_bo, i_datasize_offset, p_bo->b->i_buffer - i_datasize_offset - 4 ); \
 594     return( i_err );
 595
 596 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 597                                bo_t *p_bo )
 598 {
 599     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 600     avi_stream_t    *p_video = NULL;
 601     int         i_stream;
 602     uint32_t    i_microsecperframe;
 603     int         i_maxbytespersec;
 604     int         i_totalframes;
 605     AVI_BOX_ENTER( "avih" );
 606
 607     if( p_sys->i_stream_video >= 0 )
 608     {
 609         p_video = &p_sys->stream[p_sys->i_stream_video];
 610         if( p_video->i_frames <= 0 )
 611         {
 612         //    p_video = NULL;
 613         }
 614     }
 615
 616     if( p_video )
 617     {
 618         i_microsecperframe =
 619             (uint32_t)( (float)1000000 /
 620                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 621         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 622     }
 623     else
 624     {
 625         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 626         i_microsecperframe = 0;
 627         i_totalframes = 0;
 628     }
 629
 630     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 631     {
 632         if( p_sys->stream[i_stream].i_duration > 0 )
 633         {
 634             i_maxbytespersec +=
 635                 p_sys->stream[i_stream].i_totalsize /
 636                 p_sys->stream[i_stream].i_duration;
 637         }
 638     }
 639
 640     bo_add_32le( p_bo, i_microsecperframe );
 641     bo_add_32le( p_bo, i_maxbytespersec );
 642     bo_add_32le( p_bo, 0 );                   /* padding */
 643     bo_add_32le( p_bo, AVIF_TRUSTCKTYPE |
 644                        AVIF_HASINDEX |
 645                        AVIF_ISINTERLEAVED );  /* flags */
 646     bo_add_32le( p_bo, i_totalframes );
 647     bo_add_32le( p_bo, 0 );                   /* initial frame */
 648     bo_add_32le( p_bo, p_sys->i_streams );    /* streams count */
 649     bo_add_32le( p_bo, 1024 * 1024 );         /* suggested buffer size */
 650     if( p_video )
 651     {
 652         bo_add_32le( p_bo, p_video->p_bih->biWidth );
 653         bo_add_32le( p_bo, p_video->p_bih->biHeight );
 654     }
 655     else
 656     {
 657         bo_add_32le( p_bo, 0 );
 658         bo_add_32le( p_bo, 0 );
 659     }
 660     bo_add_32le( p_bo, 0 );                   /* ???? */
 661     bo_add_32le( p_bo, 0 );                   /* ???? */
 662     bo_add_32le( p_bo, 0 );                   /* ???? */
 663     bo_add_32le( p_bo, 0 );                   /* ???? */
 664
 665     AVI_BOX_EXIT( 0 );
 666 }
 667 static int avi_HeaderAdd_strh( bo_t *p_bo, avi_stream_t *p_stream )
 668 {
 669     AVI_BOX_ENTER( "strh" );
 670
 671     switch( p_stream->i_cat )
 672     {
 673         case VIDEO_ES:
 674             {
 675                 bo_add_fourcc( p_bo, "vids" );
 676                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 677                 bo_add_32le( p_bo, 0 );   /* flags */
 678                 bo_add_16le(  p_bo, 0 );   /* priority */
 679                 bo_add_16le(  p_bo, 0 );   /* langage */
 680                 bo_add_32le( p_bo, 0 );   /* initial frame */
 681                 bo_add_32le( p_bo, 1000 );/* scale */
 682                 bo_add_32le( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 683                 bo_add_32le( p_bo, 0 );   /* start */
 684                 bo_add_32le( p_bo, p_stream->i_frames );
 685                 bo_add_32le( p_bo, 1024 * 1024 );
 686                 bo_add_32le( p_bo, -1 );  /* quality */
 687                 bo_add_32le( p_bo, 0 );   /* samplesize */
 688                 bo_add_16le(  p_bo, 0 );   /* ??? */
 689                 bo_add_16le(  p_bo, 0 );   /* ??? */
 690                 bo_add_16le(  p_bo, p_stream->p_bih->biWidth );
 691                 bo_add_16le(  p_bo, p_stream->p_bih->biHeight );
 692             }
 693             break;
 694         case AUDIO_ES:
 695             {
 696                 int i_rate, i_scale, i_samplesize;
 697
 698                 i_samplesize = p_stream->p_wf->nBlockAlign;
 699                 if( i_samplesize > 1 )
 700                 {
 701                     i_scale = i_samplesize;
 702                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 703                 }
 704                 else
 705                 {
 706                     i_samplesize = 1;
 707                     i_scale = 1000;
 708                     i_rate = 1000 * p_stream->i_bitrate / 8;
 709                 }
 710                 bo_add_fourcc( p_bo, "auds" );
 711                 bo_add_32le( p_bo, 0 );   /* tag */
 712                 bo_add_32le( p_bo, 0 );   /* flags */
 713                 bo_add_16le(  p_bo, 0 );   /* priority */
 714                 bo_add_16le(  p_bo, 0 );   /* langage */
 715                 bo_add_32le( p_bo, 0 );   /* initial frame */
 716                 bo_add_32le( p_bo, i_scale );/* scale */
 717                 bo_add_32le( p_bo, i_rate );
 718                 bo_add_32le( p_bo, 0 );   /* start */
 719                 bo_add_32le( p_bo, p_stream->i_frames );
 720                 bo_add_32le( p_bo, 10 * 1024 );
 721                 bo_add_32le( p_bo, -1 );  /* quality */
 722                 bo_add_32le( p_bo, i_samplesize );
 723                 bo_add_16le(  p_bo, 0 );   /* ??? */
 724                 bo_add_16le(  p_bo, 0 );   /* ??? */
 725                 bo_add_16le(  p_bo, 0 );
 726                 bo_add_16le(  p_bo, 0 );
 727             }
 728             break;
 729     }
 730
 731     AVI_BOX_EXIT( 0 );
 732 }
 733
 734 static int avi_HeaderAdd_strf( bo_t *p_bo, avi_stream_t *p_stream )
 735 {
 736     AVI_BOX_ENTER( "strf" );
 737
 738     switch( p_stream->i_cat )
 739     {
 740         case AUDIO_ES:
 741             bo_add_16le( p_bo, p_stream->p_wf->wFormatTag );
 742             bo_add_16le( p_bo, p_stream->p_wf->nChannels );
 743             bo_add_32le( p_bo, p_stream->p_wf->nSamplesPerSec );
 744             bo_add_32le( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 745             bo_add_16le( p_bo, p_stream->p_wf->nBlockAlign );
 746             bo_add_16le( p_bo, p_stream->p_wf->wBitsPerSample );
 747             bo_add_16le( p_bo, p_stream->p_wf->cbSize );
 748             bo_add_mem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 749             break;
 750         case VIDEO_ES:
 751             bo_add_32le( p_bo, p_stream->p_bih->biSize );
 752             bo_add_32le( p_bo, p_stream->p_bih->biWidth );
 753             bo_add_32le( p_bo, p_stream->p_bih->biHeight );
 754             bo_add_16le( p_bo, p_stream->p_bih->biPlanes );
 755             bo_add_16le( p_bo, p_stream->p_bih->biBitCount );
 756             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 757             {
 758                 bo_add_32be( p_bo, p_stream->p_bih->biCompression );
 759             }
 760             else
 761             {
 762                 bo_add_32le( p_bo, p_stream->p_bih->biCompression );
 763             }
 764             bo_add_32le( p_bo, p_stream->p_bih->biSizeImage );
 765             bo_add_32le( p_bo, p_stream->p_bih->biXPelsPerMeter );
 766             bo_add_32le( p_bo, p_stream->p_bih->biYPelsPerMeter );
 767             bo_add_32le( p_bo, p_stream->p_bih->biClrUsed );
 768             bo_add_32le( p_bo, p_stream->p_bih->biClrImportant );
 769             bo_add_mem( p_bo,
 770                         p_stream->p_bih->biSize - sizeof( VLC_BITMAPINFOHEADER ),
 771                         (uint8_t*)&p_stream->p_bih[1] );
 772             break;
 773     }
 774
 775     AVI_BOX_EXIT( 0 );
 776 }
 777
 778 static int avi_HeaderAdd_strl( bo_t *p_bo, avi_stream_t *p_stream )
 779 {
 780     AVI_BOX_ENTER_LIST( "strl" );
 781
 782     avi_HeaderAdd_strh( p_bo, p_stream );
 783     avi_HeaderAdd_strf( p_bo, p_stream );
 784
 785     AVI_BOX_EXIT( 0 );
 786 }
 787
 788 static int avi_HeaderAdd_meta( bo_t *p_bo, const char psz_meta[4],
 789                                const char *psz_data )
 790 {
 791     if ( psz_data == NULL ) return 1;
 792     const char *psz = psz_data;
 793     AVI_BOX_ENTER( psz_meta );
 794     while (*psz) bo_add_8( p_bo, *psz++ );
 795     bo_add_8( p_bo, 0 );
 796     AVI_BOX_EXIT( 0 );
 797 }
 798
 799 static int avi_HeaderAdd_INFO( sout_mux_t *p_mux, bo_t *p_bo )
 800 {
 801     char *psz;
 802
 803 #define APPLY_META(var, fourcc) \
 804     psz = var_InheritString( p_mux, SOUT_CFG_PREFIX var );\
 805     if ( psz )\
 806     {\
 807         avi_HeaderAdd_meta( p_bo, fourcc, psz );\
 808         free( psz );\
 809     }
 810
 811     AVI_BOX_ENTER_LIST( "INFO" );
 812
 813     APPLY_META( "artist",   "IART")
 814     APPLY_META( "comment",  "ICMT")
 815     APPLY_META( "copyright","ICOP")
 816     APPLY_META( "date",     "ICRD")
 817     APPLY_META( "genre",    "IGNR")
 818     APPLY_META( "name",     "INAM")
 819     APPLY_META( "keywords", "IKEY")
 820     APPLY_META( "subject",  "ISBJ")
 821     APPLY_META( "encoder",  "ISFT")
 822     /* Some are missing, but are they really useful ?? */
 823
 824 #undef APPLY_META
 825
 826     AVI_BOX_EXIT( 0 );
 827 }
 828
 829 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 830 {
 831     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 832     int                 i_stream;
 833     int                 i_junk;
 834     bo_t                bo;
 835
 836     struct
 837     {
 838         int i_riffsize;
 839         int i_hdrllistsize;
 840         int i_hdrldatastart;
 841     } offsets;
 842
 843     bo_init( &bo, HDR_BASE_SIZE );
 844
 845     bo_add_fourcc( &bo, "RIFF" );
 846     offsets.i_riffsize = bo.b->i_buffer;
 847     bo_add_32le( &bo, 0xEFBEADDE );
 848     bo_add_fourcc( &bo, "AVI " );
 849
 850     bo_add_fourcc( &bo, "LIST" );
 851     /* HDRL List size should exclude following data in HDR buffer
 852      *  -12 (RIFF, RIFF size, 'AVI ' tag),
 853      *  - 8 (hdr1 LIST tag and its size)
 854      *  - 12 (movi LIST tag, size, 'movi' listType )
 855      */
 856     offsets.i_hdrllistsize = bo.b->i_buffer;
 857     bo_add_32le( &bo, 0xEFBEADDE );
 858     bo_add_fourcc( &bo, "hdrl" );
 859     offsets.i_hdrldatastart = bo.b->i_buffer;
 860
 861     avi_HeaderAdd_avih( p_mux, &bo );
 862     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 863     {
 864         avi_HeaderAdd_strl( &bo, &p_sys->stream[i_stream] );
 865     }
 866
 867     /* align on 16 bytes */
 868     int i_align = ( ( bo.b->i_buffer + 12 + 0xE ) & ~ 0xF );
 869     i_junk = i_align - bo.b->i_buffer;
 870     bo_add_fourcc( &bo, "JUNK" );
 871     bo_add_32le( &bo, i_junk );
 872     for( int i=0; i< i_junk; i++ )
 873     {
 874         bo_add_8( &bo, 0 );
 875     }
 876
 877     /* Now set hdrl size */
 878     bo_set_32le( &bo, offsets.i_hdrllistsize,
 879                  bo.b->i_buffer - offsets.i_hdrldatastart );
 880
 881     avi_HeaderAdd_INFO( p_mux, &bo );
 882
 883     bo_add_fourcc( &bo, "LIST" );
 884     bo_add_32le( &bo, p_sys->i_movi_size + 4 );
 885     bo_add_fourcc( &bo, "movi" );
 886
 887     /* Now set RIFF size */
 888     bo_set_32le( &bo, offsets.i_riffsize, bo.b->i_buffer - 8
 889                  + p_sys->i_movi_size + p_sys->i_idx1_size );
 890
 891     return( bo.b );
 892 }
 893
 894 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 895 {
 896     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 897     uint32_t            i_idx1_size;
 898     bo_t                bo;
 899
 900     i_idx1_size = 16 * p_sys->idx1.i_entry_count + 8;
 901
 902     bo_init( &bo, i_idx1_size );
 903     memset( bo.b->p_buffer, 0, i_idx1_size);
 904
 905     bo_add_fourcc( &bo, "idx1" );
 906     bo_add_32le( &bo, i_idx1_size - 8);
 907
 908     for( unsigned i = 0; i < p_sys->idx1.i_entry_count; i++ )
 909     {
 910         bo_add_fourcc( &bo, p_sys->idx1.entry[i].fcc );
 911         bo_add_32le( &bo, p_sys->idx1.entry[i].i_flags );
 912         bo_add_32le( &bo, p_sys->idx1.entry[i].i_pos );
 913         bo_add_32le( &bo, p_sys->idx1.entry[i].i_length );
 914     }
 915
 916     return( bo.b );
 917 }