git.sesse.net Git - vlc/blob - modules/demux/asf/asf.c

   1 /*****************************************************************************
   2  * asf.c : ASF demux module
   3  *****************************************************************************
   4  * Copyright (C) 2002-2003 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
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_plugin.h>
  34 #include <vlc_demux.h>
  35 #include <vlc_dialog.h>
  36
  37 #include <vlc_meta.h>
  38 #include <vlc_access.h>                /* GET_PRIVATE_ID_STATE */
  39 #include <vlc_codecs.h>                /* BITMAPINFOHEADER, WAVEFORMATEX */
  40 #include "libasf.h"
  41
  42 /* TODO
  43  *  - add support for the newly added object: language, bitrate,
  44  *                                            extended stream properties.
  45  */
  46
  47 /*****************************************************************************
  48  * Module descriptor
  49  *****************************************************************************/
  50 static int  Open  ( vlc_object_t * );
  51 static void Close ( vlc_object_t * );
  52
  53 vlc_module_begin ()
  54     set_category( CAT_INPUT )
  55     set_subcategory( SUBCAT_INPUT_DEMUX )
  56     set_description( N_("ASF v1.0 demuxer") )
  57     set_capability( "demux", 200 )
  58     set_callbacks( Open, Close )
  59     add_shortcut( "asf" )
  60 vlc_module_end ()
  61
  62
  63 /*****************************************************************************
  64  * Local prototypes
  65  *****************************************************************************/
  66 static int Demux  ( demux_t * );
  67 static int Control( demux_t *, int i_query, va_list args );
  68
  69 typedef struct
  70 {
  71     int i_cat;
  72
  73     es_out_id_t     *p_es;
  74
  75     asf_object_stream_properties_t *p_sp;
  76
  77     mtime_t i_time;
  78
  79     block_t         *p_frame; /* use to gather complete frame */
  80
  81 } asf_track_t;
  82
  83 struct demux_sys_t
  84 {
  85     mtime_t             i_time;     /* s */
  86     mtime_t             i_length;   /* length of file file */
  87     int64_t             i_bitrate;  /* global file bitrate */
  88
  89     asf_object_root_t            *p_root;
  90     asf_object_file_properties_t *p_fp;
  91
  92     unsigned int        i_track;
  93     asf_track_t         *track[128]; /* track number is stored on 7 bits */
  94
  95     int64_t             i_data_begin;
  96     int64_t             i_data_end;
  97
  98     bool          b_index;
  99     vlc_meta_t          *meta;
 100 };
 101
 102 static mtime_t  GetMoviePTS( demux_sys_t * );
 103 static int      DemuxInit( demux_t * );
 104 static void     DemuxEnd( demux_t * );
 105 static int      DemuxPacket( demux_t * );
 106
 107 /*****************************************************************************
 108  * Open: check file and initializes ASF structures
 109  *****************************************************************************/
 110 static int Open( vlc_object_t * p_this )
 111 {
 112     demux_t     *p_demux = (demux_t *)p_this;
 113     demux_sys_t *p_sys;
 114     guid_t      guid;
 115     const uint8_t     *p_peek;
 116
 117     /* A little test to see if it could be a asf stream */
 118     if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 ) return VLC_EGENERIC;
 119
 120     ASF_GetGUID( &guid, p_peek );
 121     if( !ASF_CmpGUID( &guid, &asf_object_header_guid ) ) return VLC_EGENERIC;
 122
 123     /* Set p_demux fields */
 124     p_demux->pf_demux = Demux;
 125     p_demux->pf_control = Control;
 126     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 127     memset( p_sys, 0, sizeof( demux_sys_t ) );
 128
 129     /* Load the headers */
 130     if( DemuxInit( p_demux ) )
 131     {
 132         free( p_sys );
 133         return VLC_EGENERIC;
 134     }
 135     return VLC_SUCCESS;
 136 }
 137
 138
 139 /*****************************************************************************
 140  * Demux: read packet and send them to decoders
 141  *****************************************************************************/
 142 static int Demux( demux_t *p_demux )
 143 {
 144     demux_sys_t *p_sys = p_demux->p_sys;
 145
 146     for( ;; )
 147     {
 148         const uint8_t *p_peek;
 149         mtime_t i_length;
 150         mtime_t i_time_begin = GetMoviePTS( p_sys );
 151         int i_result;
 152
 153         if( !vlc_object_alive (p_demux) )
 154             break;
 155 #if 0
 156         /* FIXME: returns EOF too early for some mms streams */
 157         if( p_sys->i_data_end >= 0 &&
 158                 stream_Tell( p_demux->s ) >= p_sys->i_data_end )
 159             return 0; /* EOF */
 160 #endif
 161
 162         /* Check if we have concatenated files */
 163         if( stream_Peek( p_demux->s, &p_peek, 16 ) == 16 )
 164         {
 165             guid_t guid;
 166
 167             ASF_GetGUID( &guid, p_peek );
 168             if( ASF_CmpGUID( &guid, &asf_object_header_guid ) )
 169             {
 170                 msg_Warn( p_demux, "found a new ASF header" );
 171                 /* We end this stream */
 172                 DemuxEnd( p_demux );
 173
 174                 /* And we prepare to read the next one */
 175                 if( DemuxInit( p_demux ) )
 176                 {
 177                     msg_Err( p_demux, "failed to load the new header" );
 178                     dialog_Fatal( p_demux, _("Could not demux ASF stream"),
 179                                     _("VLC failed to load the ASF header.") );
 180                     return 0;
 181                 }
 182                 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 183                 continue;
 184             }
 185         }
 186
 187         /* Read and demux a packet */
 188         if( ( i_result = DemuxPacket( p_demux ) ) <= 0 )
 189         {
 190             return i_result;
 191         }
 192         if( i_time_begin == -1 )
 193         {
 194             i_time_begin = GetMoviePTS( p_sys );
 195         }
 196         else
 197         {
 198             i_length = GetMoviePTS( p_sys ) - i_time_begin;
 199             if( i_length < 0 || i_length >= 40 * 1000 ) break;
 200         }
 201     }
 202
 203     /* Set the PCR */
 204     p_sys->i_time = GetMoviePTS( p_sys );
 205     if( p_sys->i_time >= 0 )
 206     {
 207         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time+1 );
 208     }
 209
 210     return 1;
 211 }
 212
 213 /*****************************************************************************
 214  * Close: frees unused data
 215  *****************************************************************************/
 216 static void Close( vlc_object_t * p_this )
 217 {
 218     demux_t     *p_demux = (demux_t *)p_this;
 219
 220     DemuxEnd( p_demux );
 221
 222     free( p_demux->p_sys );
 223 }
 224
 225 /*****************************************************************************
 226  * SeekIndex: goto to i_date or i_percent
 227  *****************************************************************************/
 228 static int SeekIndex( demux_t *p_demux, mtime_t i_date, float f_pos )
 229 {
 230     demux_sys_t *p_sys = p_demux->p_sys;
 231     asf_object_index_t *p_index;
 232     int64_t i_pos;
 233
 234     msg_Dbg( p_demux, "seek with index: %i seconds, position %f",
 235              (int)(i_date/1000000), f_pos );
 236
 237     p_index = ASF_FindObject( p_sys->p_root, &asf_object_index_guid, 0 );
 238
 239     if( i_date < 0 ) i_date = p_sys->i_length * f_pos;
 240
 241     i_pos = i_date * 10 / p_index->i_index_entry_time_interval;
 242     i_pos = p_index->index_entry[i_pos].i_packet_number *
 243         p_sys->p_fp->i_min_data_packet_size;
 244
 245     return stream_Seek( p_demux->s, p_sys->i_data_begin + i_pos );
 246 }
 247
 248 static void SeekPrepare( demux_t *p_demux )
 249 {
 250     demux_sys_t *p_sys = p_demux->p_sys;
 251
 252     p_sys->i_time = -1;
 253     for( int i = 0; i < 128 ; i++ )
 254     {
 255         asf_track_t *tk = p_sys->track[i];
 256         if( !tk )
 257             continue;
 258
 259         tk->i_time = 1;
 260         if( tk->p_frame )
 261             block_ChainRelease( tk->p_frame );
 262         tk->p_frame = NULL;
 263     }
 264 }
 265
 266 /*****************************************************************************
 267  * Control:
 268  *****************************************************************************/
 269 static int Control( demux_t *p_demux, int i_query, va_list args )
 270 {
 271     demux_sys_t *p_sys = p_demux->p_sys;
 272     vlc_meta_t  *p_meta;
 273     int64_t     i64, *pi64;
 274     double      f, *pf;
 275
 276     switch( i_query )
 277     {
 278     case DEMUX_GET_LENGTH:
 279         pi64 = (int64_t*)va_arg( args, int64_t * );
 280         *pi64 = p_sys->i_length;
 281         return VLC_SUCCESS;
 282
 283     case DEMUX_GET_TIME:
 284         pi64 = (int64_t*)va_arg( args, int64_t * );
 285         if( p_sys->i_time < 0 ) return VLC_EGENERIC;
 286         *pi64 = p_sys->i_time;
 287         return VLC_SUCCESS;
 288
 289     case DEMUX_SET_TIME:
 290         SeekPrepare( p_demux );
 291
 292         if( p_sys->b_index && p_sys->i_length > 0 )
 293         {
 294             i64 = (int64_t)va_arg( args, int64_t );
 295             return SeekIndex( p_demux, i64, -1 );
 296         }
 297         else
 298         {
 299             return demux_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 300                                            p_sys->i_data_end, p_sys->i_bitrate,
 301                                            p_sys->p_fp->i_min_data_packet_size,
 302                                            i_query, args );
 303         }
 304
 305     case DEMUX_GET_POSITION:
 306         if( p_sys->i_time < 0 ) return VLC_EGENERIC;
 307         if( p_sys->i_length > 0 )
 308         {
 309             pf = (double*)va_arg( args, double * );
 310             *pf = p_sys->i_time / (double)p_sys->i_length;
 311             return VLC_SUCCESS;
 312         }
 313         return demux_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 314                                        p_sys->i_data_end, p_sys->i_bitrate,
 315                                        p_sys->p_fp->i_min_data_packet_size,
 316                                        i_query, args );
 317
 318     case DEMUX_SET_POSITION:
 319         SeekPrepare( p_demux );
 320
 321         if( p_sys->b_index && p_sys->i_length > 0 )
 322         {
 323             f = (double)va_arg( args, double );
 324             return SeekIndex( p_demux, -1, f );
 325         }
 326         else
 327         {
 328             return demux_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 329                                            p_sys->i_data_end, p_sys->i_bitrate,
 330                                            p_sys->p_fp->i_min_data_packet_size,
 331                                            i_query, args );
 332         }
 333
 334     case DEMUX_GET_META:
 335         p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
 336         vlc_meta_Merge( p_meta, p_sys->meta );
 337         return VLC_SUCCESS;
 338
 339     default:
 340         return demux_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 341                                        p_sys->i_data_end, p_sys->i_bitrate,
 342                                        p_sys->p_fp->i_min_data_packet_size,
 343                                        i_query, args );
 344     }
 345 }
 346
 347 /*****************************************************************************
 348  *
 349  *****************************************************************************/
 350 static mtime_t GetMoviePTS( demux_sys_t *p_sys )
 351 {
 352     mtime_t i_time = -1;
 353     int     i;
 354
 355     for( i = 0; i < 128 ; i++ )
 356     {
 357         asf_track_t *tk = p_sys->track[i];
 358
 359         if( tk && tk->p_es && tk->i_time > 0)
 360         {
 361             if( i_time < 0 ) i_time = tk->i_time;
 362             else i_time = __MIN( i_time, tk->i_time );
 363             break;
 364         }
 365     }
 366
 367     return i_time;
 368 }
 369
 370 #define GETVALUE2b( bits, var, def ) \
 371     switch( (bits)&0x03 ) \
 372     { \
 373         case 1: var = p_peek[i_skip]; i_skip++; break; \
 374         case 2: var = GetWLE( p_peek + i_skip );  i_skip+= 2; break; \
 375         case 3: var = GetDWLE( p_peek + i_skip ); i_skip+= 4; break; \
 376         case 0: \
 377         default: var = def; break;\
 378     }
 379
 380 static int DemuxPacket( demux_t *p_demux )
 381 {
 382     demux_sys_t *p_sys = p_demux->p_sys;
 383     int         i_data_packet_min = p_sys->p_fp->i_min_data_packet_size;
 384     const uint8_t *p_peek;
 385     int         i_skip;
 386
 387     int         i_packet_size_left;
 388     int         i_packet_flags;
 389     int         i_packet_property;
 390
 391     int         b_packet_multiple_payload;
 392     int         i_packet_length;
 393     int         i_packet_sequence;
 394     int         i_packet_padding_length;
 395
 396     uint32_t    i_packet_send_time;
 397     uint16_t    i_packet_duration;
 398     int         i_payload;
 399     int         i_payload_count;
 400     int         i_payload_length_type;
 401
 402
 403     if( stream_Peek( p_demux->s, &p_peek,i_data_packet_min)<i_data_packet_min )
 404     {
 405         msg_Warn( p_demux, "cannot peek while getting new packet, EOF ?" );
 406         return 0;
 407     }
 408     i_skip = 0;
 409
 410     /* *** parse error correction if present *** */
 411     if( p_peek[0]&0x80 )
 412     {
 413         unsigned int i_error_correction_length_type;
 414         unsigned int i_error_correction_data_length;
 415         unsigned int i_opaque_data_present;
 416
 417         i_error_correction_data_length = p_peek[0] & 0x0f;  // 4bits
 418         i_opaque_data_present = ( p_peek[0] >> 4 )& 0x01;    // 1bit
 419         i_error_correction_length_type = ( p_peek[0] >> 5 ) & 0x03; // 2bits
 420         i_skip += 1; // skip error correction flags
 421
 422         if( i_error_correction_length_type != 0x00 ||
 423             i_opaque_data_present != 0 ||
 424             i_error_correction_data_length != 0x02 )
 425         {
 426             goto loop_error_recovery;
 427         }
 428
 429         i_skip += i_error_correction_data_length;
 430     }
 431     else
 432     {
 433         msg_Warn( p_demux, "p_peek[0]&0x80 != 0x80" );
 434     }
 435
 436     /* sanity check */
 437     if( i_skip + 2 >= i_data_packet_min )
 438     {
 439         goto loop_error_recovery;
 440     }
 441
 442     i_packet_flags = p_peek[i_skip]; i_skip++;
 443     i_packet_property = p_peek[i_skip]; i_skip++;
 444
 445     b_packet_multiple_payload = i_packet_flags&0x01;
 446
 447     /* read some value */
 448     GETVALUE2b( i_packet_flags >> 5, i_packet_length, i_data_packet_min );
 449     GETVALUE2b( i_packet_flags >> 1, i_packet_sequence, 0 );
 450     GETVALUE2b( i_packet_flags >> 3, i_packet_padding_length, 0 );
 451
 452     if( i_packet_padding_length > i_packet_length )
 453     {
 454         msg_Warn( p_demux, "Too large padding: %d", i_packet_padding_length );
 455         goto loop_error_recovery;
 456     }
 457
 458     i_packet_send_time = GetDWLE( p_peek + i_skip ); i_skip += 4;
 459     i_packet_duration  = GetWLE( p_peek + i_skip ); i_skip += 2;
 460
 461     /* FIXME I have to do that for some file, I don't known why */
 462     i_packet_size_left = i_data_packet_min /*i_packet_length*/ ;
 463
 464     if( b_packet_multiple_payload )
 465     {
 466         i_payload_count = p_peek[i_skip] & 0x3f;
 467         i_payload_length_type = ( p_peek[i_skip] >> 6 )&0x03;
 468         i_skip++;
 469     }
 470     else
 471     {
 472         i_payload_count = 1;
 473         i_payload_length_type = 0x02; // unused
 474     }
 475
 476     for( i_payload = 0; i_payload < i_payload_count ; i_payload++ )
 477     {
 478         asf_track_t   *tk;
 479
 480         int i_packet_keyframe;
 481         int i_stream_number;
 482         int i_media_object_number;
 483         int i_media_object_offset;
 484         int i_replicated_data_length;
 485         int i_payload_data_length;
 486         int i_payload_data_pos;
 487         int i_sub_payload_data_length;
 488         int i_tmp;
 489
 490         mtime_t i_pts;
 491         mtime_t i_pts_delta;
 492
 493         if( i_skip >= i_packet_size_left )
 494         {
 495             /* prevent some segfault with invalid file */
 496             break;
 497         }
 498
 499         i_packet_keyframe = p_peek[i_skip] >> 7;
 500         i_stream_number = p_peek[i_skip++] & 0x7f;
 501
 502         GETVALUE2b( i_packet_property >> 4, i_media_object_number, 0 );
 503         GETVALUE2b( i_packet_property >> 2, i_tmp, 0 );
 504         GETVALUE2b( i_packet_property, i_replicated_data_length, 0 );
 505
 506         if( i_replicated_data_length > 1 ) // should be at least 8 bytes
 507         {
 508             i_pts = (mtime_t)GetDWLE( p_peek + i_skip + 4 ) * 1000;
 509             i_skip += i_replicated_data_length;
 510             i_pts_delta = 0;
 511
 512             i_media_object_offset = i_tmp;
 513
 514             if( i_skip >= i_packet_size_left )
 515             {
 516                 break;
 517             }
 518         }
 519         else if( i_replicated_data_length == 1 )
 520         {
 521             /* msg_Dbg( p_demux, "found compressed payload" ); */
 522
 523             i_pts = (mtime_t)i_tmp * 1000;
 524             i_pts_delta = (mtime_t)p_peek[i_skip] * 1000; i_skip++;
 525
 526             i_media_object_offset = 0;
 527         }
 528         else
 529         {
 530             i_pts = (mtime_t)i_packet_send_time * 1000;
 531             i_pts_delta = 0;
 532
 533             i_media_object_offset = i_tmp;
 534         }
 535
 536         i_pts = __MAX( i_pts - p_sys->p_fp->i_preroll * 1000, 0 );
 537         if( b_packet_multiple_payload )
 538         {
 539             GETVALUE2b( i_payload_length_type, i_payload_data_length, 0 );
 540         }
 541         else
 542         {
 543             i_payload_data_length = i_packet_length -
 544                                     i_packet_padding_length - i_skip;
 545         }
 546
 547         if( i_payload_data_length < 0 || i_payload_data_length > i_packet_size_left )
 548         {
 549             break;
 550         }
 551 #if 0
 552          msg_Dbg( p_demux,
 553                   "payload(%d/%d) stream_number:%d media_object_number:%d media_object_offset:%d replicated_data_length:%d payload_data_length %d",
 554                   i_payload + 1, i_payload_count, i_stream_number, i_media_object_number,
 555                   i_media_object_offset, i_replicated_data_length, i_payload_data_length );
 556 #endif
 557
 558         if( ( tk = p_sys->track[i_stream_number] ) == NULL )
 559         {
 560             msg_Warn( p_demux,
 561                       "undeclared stream[Id 0x%x]", i_stream_number );
 562             i_skip += i_payload_data_length;
 563             continue;   // over payload
 564         }
 565
 566         if( !tk->p_es )
 567         {
 568             i_skip += i_payload_data_length;
 569             continue;
 570         }
 571
 572
 573         for( i_payload_data_pos = 0;
 574              i_payload_data_pos < i_payload_data_length &&
 575                     i_packet_size_left > 0;
 576              i_payload_data_pos += i_sub_payload_data_length )
 577         {
 578             block_t *p_frag;
 579             int i_read;
 580
 581             // read sub payload length
 582             if( i_replicated_data_length == 1 )
 583             {
 584                 i_sub_payload_data_length = p_peek[i_skip]; i_skip++;
 585                 i_payload_data_pos++;
 586             }
 587             else
 588             {
 589                 i_sub_payload_data_length = i_payload_data_length;
 590             }
 591
 592             /* FIXME I don't use i_media_object_number, sould I ? */
 593             if( tk->p_frame && i_media_object_offset == 0 )
 594             {
 595                 /* send complete packet to decoder */
 596                 block_t *p_gather = block_ChainGather( tk->p_frame );
 597
 598                 if( p_sys->i_time < 0 )
 599                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, tk->i_time );
 600
 601                 es_out_Send( p_demux->out, tk->p_es, p_gather );
 602
 603                 tk->p_frame = NULL;
 604             }
 605
 606             i_read = i_sub_payload_data_length + i_skip;
 607             if( ( p_frag = stream_Block( p_demux->s, i_read ) ) == NULL )
 608             {
 609                 msg_Warn( p_demux, "cannot read data" );
 610                 return 0;
 611             }
 612             i_packet_size_left -= i_read;
 613
 614             p_frag->p_buffer += i_skip;
 615             p_frag->i_buffer -= i_skip;
 616
 617             if( tk->p_frame == NULL )
 618             {
 619                 tk->i_time =
 620                     ( (mtime_t)i_pts + i_payload * (mtime_t)i_pts_delta );
 621
 622                 p_frag->i_pts = tk->i_time;
 623
 624                 if( tk->i_cat != VIDEO_ES )
 625                     p_frag->i_dts = p_frag->i_pts;
 626                 else
 627                 {
 628                     p_frag->i_dts = p_frag->i_pts;
 629                     p_frag->i_pts = 0;
 630                 }
 631             }
 632
 633             block_ChainAppend( &tk->p_frame, p_frag );
 634
 635             i_skip = 0;
 636             if( i_packet_size_left > 0 )
 637             {
 638                 if( stream_Peek( p_demux->s, &p_peek, i_packet_size_left )
 639                                                          < i_packet_size_left )
 640                 {
 641                     msg_Warn( p_demux, "cannot peek, EOF ?" );
 642                     return 0;
 643                 }
 644             }
 645         }
 646     }
 647
 648     if( i_packet_size_left > 0 )
 649     {
 650 #ifdef ASF_DEBUG
 651         if( i_packet_size_left > i_packet_padding_length )
 652             msg_Warn( p_demux, "Didn't read %d bytes in the packet",
 653                             i_packet_size_left - i_packet_padding_length );
 654         else if( i_packet_size_left < i_packet_padding_length )
 655             msg_Warn( p_demux, "Read %d too much bytes in the packet",
 656                             i_packet_padding_length - i_packet_size_left );
 657 #endif
 658         if( stream_Read( p_demux->s, NULL, i_packet_size_left )
 659                                                          < i_packet_size_left )
 660         {
 661             msg_Err( p_demux, "cannot skip data, EOF ?" );
 662             return 0;
 663         }
 664     }
 665
 666     return 1;
 667
 668 loop_error_recovery:
 669     msg_Warn( p_demux, "unsupported packet header" );
 670     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 671     {
 672         msg_Err( p_demux, "unsupported packet header, fatal error" );
 673         return -1;
 674     }
 675     if( stream_Read( p_demux->s, NULL, i_data_packet_min ) != i_data_packet_min )
 676     {
 677         msg_Warn( p_demux, "cannot skip data, EOF ?" );
 678         return 0;
 679     }
 680
 681     return 1;
 682 }
 683
 684 /*****************************************************************************
 685  *
 686  *****************************************************************************/
 687 static int DemuxInit( demux_t *p_demux )
 688 {
 689     demux_sys_t *p_sys = p_demux->p_sys;
 690     bool b_seekable;
 691     unsigned int i_stream;
 692     asf_object_content_description_t *p_cd;
 693     asf_object_index_t *p_index;
 694     bool b_index;
 695
 696     /* init context */
 697     p_sys->i_time   = -1;
 698     p_sys->i_length = 0;
 699     p_sys->i_bitrate = 0;
 700     p_sys->p_root   = NULL;
 701     p_sys->p_fp     = NULL;
 702     p_sys->b_index  = 0;
 703     p_sys->i_track  = 0;
 704     for( int i = 0; i < 128; i++ )
 705     {
 706         p_sys->track[i] = NULL;
 707     }
 708     p_sys->i_data_begin = -1;
 709     p_sys->i_data_end   = -1;
 710     p_sys->meta         = NULL;
 711
 712     /* Now load all object ( except raw data ) */
 713     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
 714     if( !(p_sys->p_root = ASF_ReadObjectRoot(p_demux->s, b_seekable)) )
 715     {
 716         msg_Warn( p_demux, "ASF plugin discarded (not a valid file)" );
 717         return VLC_EGENERIC;
 718     }
 719     p_sys->p_fp = p_sys->p_root->p_fp;
 720
 721     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 722     {
 723         msg_Warn( p_demux, "ASF plugin discarded (invalid file_properties object)" );
 724         goto error;
 725     }
 726
 727     p_sys->i_track = ASF_CountObject( p_sys->p_root->p_hdr,
 728                                       &asf_object_stream_properties_guid );
 729     if( p_sys->i_track <= 0 )
 730     {
 731         msg_Warn( p_demux, "ASF plugin discarded (cannot find any stream!)" );
 732         goto error;
 733     }
 734
 735     /* check if index is available */
 736     p_index = ASF_FindObject( p_sys->p_root, &asf_object_index_guid, 0 );
 737     b_index = p_index && p_index->i_index_entry_count;
 738
 739     msg_Dbg( p_demux, "found %d streams", p_sys->i_track );
 740
 741     for( i_stream = 0; i_stream < p_sys->i_track; i_stream ++ )
 742     {
 743         asf_track_t    *tk;
 744         asf_object_stream_properties_t *p_sp;
 745         asf_object_extended_stream_properties_t *p_esp;
 746         asf_object_t *p_hdr_ext;
 747         bool b_access_selected;
 748
 749         p_sp = ASF_FindObject( p_sys->p_root->p_hdr,
 750                                &asf_object_stream_properties_guid,
 751                                i_stream );
 752         p_esp = NULL;
 753
 754         tk = p_sys->track[p_sp->i_stream_number] = malloc( sizeof( asf_track_t ) );
 755         memset( tk, 0, sizeof( asf_track_t ) );
 756
 757         tk->i_time = -1;
 758         tk->p_sp = p_sp;
 759         tk->p_es = NULL;
 760         tk->p_frame = NULL;
 761
 762         /* Check (in case of mms) if this track is selected (ie will receive data) */
 763         if( !stream_Control( p_demux->s, STREAM_CONTROL_ACCESS, ACCESS_GET_PRIVATE_ID_STATE,
 764                              p_sp->i_stream_number, &b_access_selected ) &&
 765             !b_access_selected )
 766         {
 767             tk->i_cat = UNKNOWN_ES;
 768             msg_Dbg( p_demux, "ignoring not selected stream(ID:%d) (by access)",
 769                      p_sp->i_stream_number );
 770             continue;
 771         }
 772
 773         /* Find the associated extended_stream_properties if any */
 774         p_hdr_ext = ASF_FindObject( p_sys->p_root->p_hdr,
 775                                     &asf_object_header_extension_guid, 0 );
 776         if( p_hdr_ext )
 777         {
 778             int i_ext_stream = ASF_CountObject( p_hdr_ext,
 779                                                 &asf_object_extended_stream_properties );
 780             for( int i = 0; i < i_ext_stream; i++ )
 781             {
 782                 asf_object_t *p_tmp =
 783                     ASF_FindObject( p_hdr_ext,
 784                                     &asf_object_extended_stream_properties, i );
 785                 if( p_tmp->ext_stream.i_stream_number == p_sp->i_stream_number )
 786                 {
 787                     p_esp = &p_tmp->ext_stream;
 788                     break;
 789                 }
 790             }
 791         }
 792
 793         if( ASF_CmpGUID( &p_sp->i_stream_type, &asf_object_stream_type_audio ) &&
 794             p_sp->i_type_specific_data_length >= sizeof( WAVEFORMATEX ) - 2 )
 795         {
 796             es_format_t fmt;
 797             uint8_t *p_data = p_sp->p_type_specific_data;
 798             int i_format;
 799
 800             es_format_Init( &fmt, AUDIO_ES, 0 );
 801             i_format = GetWLE( &p_data[0] );
 802             wf_tag_to_fourcc( i_format, &fmt.i_codec, NULL );
 803             fmt.audio.i_channels        = GetWLE(  &p_data[2] );
 804             fmt.audio.i_rate      = GetDWLE( &p_data[4] );
 805             fmt.i_bitrate         = GetDWLE( &p_data[8] ) * 8;
 806             fmt.audio.i_blockalign      = GetWLE(  &p_data[12] );
 807             fmt.audio.i_bitspersample   = GetWLE(  &p_data[14] );
 808
 809             if( p_sp->i_type_specific_data_length > sizeof( WAVEFORMATEX ) &&
 810                 i_format != WAVE_FORMAT_MPEGLAYER3 &&
 811                 i_format != WAVE_FORMAT_MPEG )
 812             {
 813                 fmt.i_extra = __MIN( GetWLE( &p_data[16] ),
 814                                      p_sp->i_type_specific_data_length -
 815                                      sizeof( WAVEFORMATEX ) );
 816                 fmt.p_extra = malloc( fmt.i_extra );
 817                 memcpy( fmt.p_extra, &p_data[sizeof( WAVEFORMATEX )],
 818                         fmt.i_extra );
 819             }
 820
 821             tk->i_cat = AUDIO_ES;
 822             tk->p_es = es_out_Add( p_demux->out, &fmt );
 823             es_format_Clean( &fmt );
 824
 825             msg_Dbg( p_demux, "added new audio stream(codec:0x%x,ID:%d)",
 826                     GetWLE( p_data ), p_sp->i_stream_number );
 827         }
 828         else if( ASF_CmpGUID( &p_sp->i_stream_type,
 829                               &asf_object_stream_type_video ) &&
 830                  p_sp->i_type_specific_data_length >= 11 +
 831                  sizeof( BITMAPINFOHEADER ) )
 832         {
 833             es_format_t  fmt;
 834             uint8_t      *p_data = &p_sp->p_type_specific_data[11];
 835
 836             es_format_Init( &fmt, VIDEO_ES,
 837                             VLC_FOURCC( p_data[16], p_data[17],
 838                                         p_data[18], p_data[19] ) );
 839             fmt.video.i_width = GetDWLE( p_data + 4 );
 840             fmt.video.i_height= GetDWLE( p_data + 8 );
 841
 842             if( p_esp && p_esp->i_average_time_per_frame > 0 )
 843             {
 844                 fmt.video.i_frame_rate = 10000000;
 845                 fmt.video.i_frame_rate_base = p_esp->i_average_time_per_frame;
 846             }
 847
 848             if( fmt.i_codec == VLC_FOURCC( 'D','V','R',' ') )
 849             {
 850                 /* DVR-MS special ASF */
 851                 fmt.i_codec = VLC_FOURCC( 'm','p','g','2' ) ;
 852                 fmt.b_packetized = false;
 853             }
 854
 855             if( p_sp->i_type_specific_data_length > 11 +
 856                 sizeof( BITMAPINFOHEADER ) )
 857             {
 858                 fmt.i_extra = __MIN( GetDWLE( p_data ),
 859                                      p_sp->i_type_specific_data_length - 11 -
 860                                      sizeof( BITMAPINFOHEADER ) );
 861                 fmt.p_extra = malloc( fmt.i_extra );
 862                 memcpy( fmt.p_extra, &p_data[sizeof( BITMAPINFOHEADER )],
 863                         fmt.i_extra );
 864             }
 865
 866             /* Look for an aspect ratio */
 867             if( p_sys->p_root->p_metadata )
 868             {
 869                 asf_object_metadata_t *p_meta = p_sys->p_root->p_metadata;
 870                 int i_aspect_x = 0, i_aspect_y = 0;
 871                 unsigned int i;
 872
 873                 for( i = 0; i < p_meta->i_record_entries_count; i++ )
 874                 {
 875                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioX" ) )
 876                     {
 877                         if( (!i_aspect_x && !p_meta->record[i].i_stream) ||
 878                             p_meta->record[i].i_stream ==
 879                             p_sp->i_stream_number )
 880                             i_aspect_x = p_meta->record[i].i_val;
 881                     }
 882                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioY" ) )
 883                     {
 884                         if( (!i_aspect_y && !p_meta->record[i].i_stream) ||
 885                             p_meta->record[i].i_stream ==
 886                             p_sp->i_stream_number )
 887                             i_aspect_y = p_meta->record[i].i_val;
 888                     }
 889                 }
 890
 891                 if( i_aspect_x && i_aspect_y )
 892                 {
 893                     fmt.video.i_aspect = i_aspect_x *
 894                         (int64_t)fmt.video.i_width * VOUT_ASPECT_FACTOR /
 895                         fmt.video.i_height / i_aspect_y;
 896                 }
 897             }
 898
 899             tk->i_cat = VIDEO_ES;
 900             tk->p_es = es_out_Add( p_demux->out, &fmt );
 901             es_format_Clean( &fmt );
 902
 903             /* If there is a video track then use the index for seeking */
 904             p_sys->b_index = b_index;
 905
 906             msg_Dbg( p_demux, "added new video stream(ID:%d)",
 907                      p_sp->i_stream_number );
 908         }
 909         else if( ASF_CmpGUID( &p_sp->i_stream_type, &asf_object_extended_stream_header ) &&
 910             p_sp->i_type_specific_data_length >= 64 )
 911         {
 912             /* Now follows a 64 byte header of which we don't know much */
 913             es_format_t fmt;
 914             guid_t  *p_ref  = (guid_t *)p_sp->p_type_specific_data;
 915             uint8_t *p_data = p_sp->p_type_specific_data + 64;
 916             unsigned int i_data = p_sp->i_type_specific_data_length - 64;
 917
 918             msg_Dbg( p_demux, "Ext stream header detected. datasize = %d", p_sp->i_type_specific_data_length );
 919             if( ASF_CmpGUID( p_ref, &asf_object_extended_stream_type_audio ) &&
 920                 i_data >= sizeof( WAVEFORMATEX ) - 2)
 921             {
 922                 int      i_format;
 923                 es_format_Init( &fmt, AUDIO_ES, 0 );
 924                 i_format = GetWLE( &p_data[0] );
 925                 if( i_format == 0 )
 926                     fmt.i_codec = VLC_FOURCC( 'a','5','2',' ');
 927                 else
 928                     wf_tag_to_fourcc( i_format, &fmt.i_codec, NULL );
 929                 fmt.audio.i_channels        = GetWLE(  &p_data[2] );
 930                 fmt.audio.i_rate      = GetDWLE( &p_data[4] );
 931                 fmt.i_bitrate         = GetDWLE( &p_data[8] ) * 8;
 932                 fmt.audio.i_blockalign      = GetWLE(  &p_data[12] );
 933                 fmt.audio.i_bitspersample   = GetWLE(  &p_data[14] );
 934                 fmt.b_packetized = true;
 935
 936                 if( p_sp->i_type_specific_data_length > sizeof( WAVEFORMATEX ) &&
 937                     i_format != WAVE_FORMAT_MPEGLAYER3 &&
 938                     i_format != WAVE_FORMAT_MPEG )
 939                 {
 940                     fmt.i_extra = __MIN( GetWLE( &p_data[16] ),
 941                                          p_sp->i_type_specific_data_length -
 942                                          sizeof( WAVEFORMATEX ) );
 943                     fmt.p_extra = malloc( fmt.i_extra );
 944                     memcpy( fmt.p_extra, &p_data[sizeof( WAVEFORMATEX )],
 945                         fmt.i_extra );
 946                 }
 947
 948                 tk->i_cat = AUDIO_ES;
 949                 tk->p_es = es_out_Add( p_demux->out, &fmt );
 950                 es_format_Clean( &fmt );
 951
 952                 msg_Dbg( p_demux, "added new audio stream (codec:0x%x,ID:%d)",
 953                     i_format, p_sp->i_stream_number );
 954             }
 955         }
 956         else
 957         {
 958             tk->i_cat = UNKNOWN_ES;
 959             msg_Dbg( p_demux, "ignoring unknown stream(ID:%d)",
 960                      p_sp->i_stream_number );
 961         }
 962     }
 963
 964     p_sys->i_data_begin = p_sys->p_root->p_data->i_object_pos + 50;
 965     if( p_sys->p_root->p_data->i_object_size != 0 )
 966     { /* local file */
 967         p_sys->i_data_end = p_sys->p_root->p_data->i_object_pos +
 968                                     p_sys->p_root->p_data->i_object_size;
 969     }
 970     else
 971     { /* live/broacast */
 972         p_sys->i_data_end = -1;
 973     }
 974
 975     /* go to first packet */
 976     stream_Seek( p_demux->s, p_sys->i_data_begin );
 977
 978     /* try to calculate movie time */
 979     if( p_sys->p_fp->i_data_packets_count > 0 )
 980     {
 981         int64_t i_count;
 982         int64_t i_size = stream_Size( p_demux->s );
 983
 984         if( p_sys->i_data_end > 0 && i_size > p_sys->i_data_end )
 985         {
 986             i_size = p_sys->i_data_end;
 987         }
 988
 989         /* real number of packets */
 990         i_count = ( i_size - p_sys->i_data_begin ) /
 991                   p_sys->p_fp->i_min_data_packet_size;
 992
 993         /* calculate the time duration in micro-s */
 994         p_sys->i_length = (mtime_t)p_sys->p_fp->i_play_duration / 10 *
 995                    (mtime_t)i_count /
 996                    (mtime_t)p_sys->p_fp->i_data_packets_count;
 997
 998         if( p_sys->i_length > 0 )
 999         {
1000             p_sys->i_bitrate = 8 * i_size * (int64_t)1000000 / p_sys->i_length;
1001         }
1002     }
1003
1004     /* Create meta information */
1005     p_sys->meta = vlc_meta_New();
1006
1007     if( ( p_cd = ASF_FindObject( p_sys->p_root->p_hdr,
1008                                  &asf_object_content_description_guid, 0 ) ) )
1009     {
1010         if( p_cd->psz_title && *p_cd->psz_title )
1011         {
1012             vlc_meta_SetTitle( p_sys->meta, p_cd->psz_title );
1013         }
1014         if( p_cd->psz_artist && *p_cd->psz_artist )
1015         {
1016              vlc_meta_SetArtist( p_sys->meta, p_cd->psz_artist );
1017         }
1018         if( p_cd->psz_copyright && *p_cd->psz_copyright )
1019         {
1020             vlc_meta_SetCopyright( p_sys->meta, p_cd->psz_copyright );
1021         }
1022         if( p_cd->psz_description && *p_cd->psz_description )
1023         {
1024             vlc_meta_SetDescription( p_sys->meta, p_cd->psz_description );
1025         }
1026         if( p_cd->psz_rating && *p_cd->psz_rating )
1027         {
1028             vlc_meta_SetRating( p_sys->meta, p_cd->psz_rating );
1029         }
1030     }
1031     /// \tood Fix Child meta for ASF tracks
1032 #if 0
1033     for( i_stream = 0, i = 0; i < 128; i++ )
1034     {
1035         asf_object_codec_list_t *p_cl = ASF_FindObject( p_sys->p_root->p_hdr,
1036                                                         &asf_object_codec_list_guid, 0 );
1037
1038         if( p_sys->track[i] )
1039         {
1040             vlc_meta_t *tk = vlc_meta_New();
1041             TAB_APPEND( p_sys->meta->i_track, p_sys->meta->track, tk );
1042
1043             if( p_cl && i_stream < p_cl->i_codec_entries_count )
1044             {
1045                 if( p_cl->codec[i_stream].psz_name &&
1046                     *p_cl->codec[i_stream].psz_name )
1047                 {
1048                     vlc_meta_Add( tk, VLC_META_CODEC_NAME,
1049                                   p_cl->codec[i_stream].psz_name );
1050                 }
1051                 if( p_cl->codec[i_stream].psz_description &&
1052                     *p_cl->codec[i_stream].psz_description )
1053                 {
1054                     vlc_meta_Add( tk, VLC_META_CODEC_DESCRIPTION,
1055                                   p_cl->codec[i_stream].psz_description );
1056                 }
1057             }
1058             i_stream++;
1059         }
1060     }
1061 #endif
1062     return VLC_SUCCESS;
1063
1064 error:
1065     ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
1066     return VLC_EGENERIC;
1067 }
1068 /*****************************************************************************
1069  *
1070  *****************************************************************************/
1071 static void DemuxEnd( demux_t *p_demux )
1072 {
1073     demux_sys_t *p_sys = p_demux->p_sys;
1074     int         i;
1075
1076     if( p_sys->p_root )
1077     {
1078         ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
1079         p_sys->p_root = NULL;
1080     }
1081     if( p_sys->meta )
1082     {
1083         vlc_meta_Delete( p_sys->meta );
1084         p_sys->meta = NULL;
1085     }
1086
1087     for( i = 0; i < 128; i++ )
1088     {
1089         asf_track_t *tk = p_sys->track[i];
1090
1091         if( tk )
1092         {
1093             if( tk->p_frame )
1094             {
1095                 block_ChainRelease( tk->p_frame );
1096             }
1097             if( tk->p_es )
1098             {
1099                 es_out_Del( p_demux->out, tk->p_es );
1100             }
1101             free( tk );
1102         }
1103         p_sys->track[i] = 0;
1104     }
1105 }
1106