git.sesse.net Git - vlc/blob - modules/codec/realaudio.c

   1 /*****************************************************************************
   2  * realaudio.c: a realaudio decoder that uses the realaudio library/dll
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  20  *****************************************************************************/
  21
  22 /*****************************************************************************
  23  * Preamble
  24  *****************************************************************************/
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <vlc_common.h>
  30 #include <vlc_plugin.h>
  31 #include <vlc_aout.h>
  32 #include <vlc_codec.h>
  33
  34 #ifdef LOADER
  35 /* Need the w32dll loader from mplayer */
  36 #   include <wine/winerror.h>
  37 #   include <ldt_keeper.h>
  38 #   include <wine/windef.h>
  39
  40 void *WINAPI LoadLibraryA( char *name );
  41 void *WINAPI GetProcAddress( void *handle, char *func );
  42 int WINAPI FreeLibrary( void *handle );
  43 #endif
  44
  45 #ifndef WINAPI
  46 #   define WINAPI
  47 #endif
  48
  49 #if defined(HAVE_DL_DLOPEN)
  50 #   if defined(HAVE_DLFCN_H) /* Linux, BSD, Hurd */
  51 #       include <dlfcn.h>
  52 #   endif
  53 #   if defined(HAVE_SYS_DL_H)
  54 #       include <sys/dl.h>
  55 #   endif
  56 #endif
  57
  58 /*****************************************************************************
  59  * Module descriptor
  60  *****************************************************************************/
  61 static int  Open ( vlc_object_t * );
  62 static void Close( vlc_object_t * );
  63
  64 vlc_module_begin ()
  65     set_description( N_("RealAudio library decoder") )
  66     set_capability( "decoder", 10 )
  67     set_category( CAT_INPUT )
  68     set_subcategory( SUBCAT_INPUT_VCODEC )
  69     set_callbacks( Open, Close )
  70 vlc_module_end ()
  71
  72 /*****************************************************************************
  73  * Local prototypes
  74  *****************************************************************************/
  75 static int  OpenDll( decoder_t * );
  76 #ifndef WIN32
  77 static int  OpenNativeDll( decoder_t *, char *, char * );
  78 #endif
  79 static int  OpenWin32Dll( decoder_t *, char *, char * );
  80 static void CloseDll( decoder_t * );
  81
  82 static aout_buffer_t *Decode( decoder_t *, block_t ** );
  83
  84 struct decoder_sys_t
  85 {
  86     date_t end_date;
  87
  88     /* Output buffer */
  89     char *p_out;
  90     unsigned int i_out;
  91
  92     /* Codec params */
  93     void *context;
  94     short int i_codec_flavor;
  95
  96     void *dll;
  97     unsigned long (*raCloseCodec)(void*);
  98     unsigned long (*raDecode)(void*, char*, unsigned long, char*,
  99                               unsigned int*, long);
 100     unsigned long (*raFlush)(unsigned long, unsigned long, unsigned long);
 101     unsigned long (*raFreeDecoder)(void*);
 102     void*         (*raGetFlavorProperty)(void*, unsigned long,
 103                                          unsigned long, int*);
 104     unsigned long (*raInitDecoder)(void*, void*);
 105     unsigned long (*raOpenCodec)(void*);
 106     unsigned long (*raOpenCodec2)(void*, void*);
 107     unsigned long (*raSetFlavor)(void*, unsigned long);
 108     void          (*raSetDLLAccessPath)(char*);
 109     void          (*raSetPwd)(char*, char*);
 110
 111 #if defined(LOADER)
 112     ldt_fs_t *ldt_fs;
 113 #endif
 114
 115     void *win32_dll;
 116     unsigned long (WINAPI *wraCloseCodec)(void*);
 117     unsigned long (WINAPI *wraDecode)(void*, char*, unsigned long, char*,
 118                                       unsigned int*, long);
 119     unsigned long (WINAPI *wraFlush)(unsigned long, unsigned long,
 120                                      unsigned long);
 121     unsigned long (WINAPI *wraFreeDecoder)(void*);
 122     void*         (WINAPI *wraGetFlavorProperty)(void*, unsigned long,
 123                                                  unsigned long, int*);
 124     unsigned long (WINAPI *wraInitDecoder)(void*, void*);
 125     unsigned long (WINAPI *wraOpenCodec)(void*);
 126     unsigned long (WINAPI *wraOpenCodec2)(void*, void*);
 127     unsigned long (WINAPI *wraSetFlavor)(void*, unsigned long);
 128     void          (WINAPI *wraSetDLLAccessPath)(char*);
 129     void          (WINAPI *wraSetPwd)(char*, char*);
 130 };
 131
 132 /* linux dlls doesn't need packing */
 133 typedef struct /*__attribute__((__packed__))*/ {
 134     int samplerate;
 135     short bits;
 136     short channels;
 137     short quality;
 138     /* 2bytes padding here, by gcc */
 139     int bits_per_frame;
 140     int packetsize;
 141     int extradata_len;
 142     void* extradata;
 143 } ra_init_t;
 144
 145 /* windows dlls need packed structs (no padding) */
 146 typedef struct __attribute__((__packed__)) {
 147     int samplerate;
 148     short bits;
 149     short channels;
 150     short quality;
 151     int bits_per_frame;
 152     int packetsize;
 153     int extradata_len;
 154     void* extradata;
 155 } wra_init_t;
 156
 157 void *__builtin_new(unsigned long size) {return malloc(size);}
 158 void __builtin_delete(void *p) {free(p);}
 159
 160 static const int pi_channels_maps[7] =
 161 {
 162     0,
 163     AOUT_CHAN_CENTER,
 164     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 165     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 166     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 167      | AOUT_CHAN_REARRIGHT,
 168     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 169      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
 170     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 171      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
 172 };
 173
 174 /*****************************************************************************
 175  * Open: probe the decoder and return score
 176  *****************************************************************************
 177  * Tries to launch a decoder and return score so that the interface is able
 178  * to choose.
 179  *****************************************************************************/
 180 static int Open( vlc_object_t *p_this )
 181 {
 182     decoder_t *p_dec = (decoder_t*)p_this;
 183     decoder_sys_t *p_sys = p_dec->p_sys;
 184
 185     switch( p_dec->fmt_in.i_codec )
 186     {
 187     case VLC_CODEC_COOK:
 188     case VLC_CODEC_ATRAC3:
 189     case VLC_FOURCC('s','i','p','r'):
 190         break;
 191
 192     default:
 193         return VLC_EGENERIC;
 194     }
 195
 196     /* Channel detection */
 197     if( p_dec->fmt_in.audio.i_channels <= 0 ||
 198         p_dec->fmt_in.audio.i_channels > 6 )
 199     {
 200         msg_Err( p_dec, "invalid number of channels (not between 1 and 6): %i",
 201                  p_dec->fmt_in.audio.i_channels );
 202         return VLC_EGENERIC;
 203     }
 204
 205     p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
 206     if( !p_sys )
 207         return VLC_ENOMEM;
 208
 209     /* Flavor for SIPR codecs */
 210     p_sys->i_codec_flavor = -1;
 211     if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','i','p','r') )
 212     {
 213         p_sys->i_codec_flavor = p_dec->fmt_in.audio.i_flavor;
 214         msg_Dbg( p_dec, "Got sipr flavor %d", p_sys->i_codec_flavor );
 215     }
 216
 217     if( OpenDll( p_dec ) != VLC_SUCCESS )
 218     {
 219         free( p_sys );
 220         return VLC_EGENERIC;
 221     }
 222
 223 #ifdef LOADER
 224     if( p_sys->win32_dll ) Close( p_this );
 225 #endif
 226
 227     es_format_Init( &p_dec->fmt_out, AUDIO_ES, VLC_CODEC_S16N );
 228     p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
 229     p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
 230     p_dec->fmt_out.audio.i_bitspersample =
 231         p_dec->fmt_in.audio.i_bitspersample;
 232     p_dec->fmt_out.audio.i_physical_channels =
 233     p_dec->fmt_out.audio.i_original_channels =
 234         pi_channels_maps[p_dec->fmt_out.audio.i_channels];
 235
 236     date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
 237     date_Set( &p_sys->end_date, 0 );
 238
 239     p_dec->pf_decode_audio = Decode;
 240
 241     p_sys->p_out = malloc( 4096 * 10 );
 242     if( !p_sys->p_out )
 243     {
 244         free( p_sys );
 245         return VLC_ENOMEM;
 246     }
 247     p_sys->i_out = 0;
 248
 249     return VLC_SUCCESS;
 250 }
 251
 252 /*****************************************************************************
 253  * Close:
 254  *****************************************************************************/
 255 static void Close( vlc_object_t *p_this )
 256 {
 257     decoder_t *p_dec = (decoder_t*)p_this;
 258
 259     CloseDll( p_dec );
 260     free( p_dec->p_sys->p_out );
 261     free( p_dec->p_sys );
 262 }
 263
 264 /*****************************************************************************
 265  * OpenDll:
 266  *****************************************************************************/
 267 static int OpenDll( decoder_t *p_dec )
 268 {
 269     char *psz_dll;
 270     int i, i_result;
 271
 272     /** Find the good path for the dlls.**/
 273     char *ppsz_path[] =
 274     {
 275       ".",
 276 #ifndef WIN32
 277       "/usr/local/RealPlayer8/Codecs",
 278       "/usr/RealPlayer8/Codecs",
 279       "/usr/lib/RealPlayer8/Codecs",
 280       "/opt/RealPlayer8/Codecs",
 281       "/usr/lib/RealPlayer9/users/Real/Codecs",
 282       "/usr/lib/RealPlayer10/codecs",
 283       "/usr/lib/RealPlayer10GOLD/codecs",
 284       "/usr/lib/helix/player/codecs",
 285       "/usr/lib64/RealPlayer8/Codecs",
 286       "/usr/lib64/RealPlayer9/users/Real/Codecs",
 287       "/usr/lib64/RealPlayer10/codecs",
 288       "/usr/lib64/RealPlayer10GOLD/codecs",
 289       "/usr/lib/win32",
 290       "/usr/lib/codecs",
 291       "/usr/local/lib/codecs",
 292 #endif
 293       NULL,
 294       NULL,
 295       NULL
 296     };
 297
 298 #ifdef WIN32
 299     char psz_win32_real_codecs[MAX_PATH + 1];
 300     char psz_win32_helix_codecs[MAX_PATH + 1];
 301
 302     {
 303         HKEY h_key;
 304         DWORD i_type, i_data = MAX_PATH + 1, i_index = 1;
 305         char *p_data;
 306
 307         p_data = psz_win32_real_codecs;
 308         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 309                           _T("Software\\RealNetworks\\Preferences\\DT_Codecs"),
 310                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 311         {
 312              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 313                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 314                  i_type == REG_SZ )
 315              {
 316                  int i_len = strlen( p_data );
 317                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 318                  ppsz_path[i_index++] = p_data;
 319                  msg_Err( p_dec, "Real: %s", p_data );
 320              }
 321              RegCloseKey( h_key );
 322         }
 323
 324         p_data = psz_win32_helix_codecs;
 325         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 326                           _T("Helix\\HelixSDK\\10.0\\Preferences\\DT_Codecs"),
 327                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 328         {
 329              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 330                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 331                  i_type == REG_SZ )
 332              {
 333                  int i_len = strlen( p_data );
 334                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 335                  ppsz_path[i_index++] = p_data;
 336                  msg_Err( p_dec, "Real: %s", p_data );
 337              }
 338              RegCloseKey( h_key );
 339         }
 340     }
 341 #endif
 342
 343
 344     /** Try the native libraries first **/
 345 #ifndef WIN32
 346     for( i = 0; ppsz_path[i]; i++ )
 347     {
 348         /* Old format */
 349         if( asprintf( &psz_dll, "%s/%4.4s.so.6.0", ppsz_path[i],
 350                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 351         {
 352             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 353             free( psz_dll );
 354             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 355         }
 356
 357         /* New format */
 358         if( asprintf( &psz_dll, "%s/%4.4s.so", ppsz_path[i],
 359                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 360         {
 361             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 362             free( psz_dll );
 363             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 364         }
 365     }
 366 #endif
 367
 368     /** Or use the WIN32 dlls **/
 369 #if defined(LOADER) || defined(WIN32)
 370     for( i = 0; ppsz_path[i]; i++ )
 371     {
 372         /* New format */
 373         if( asprintf( &psz_dll, "%s\\%4.4s.dll", ppsz_path[i],
 374                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 375         {
 376             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 377             free( psz_dll );
 378             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 379         }
 380
 381         /* Old format */
 382         if( asprintf( &psz_dll, "%s\\%4.4s3260.dll", ppsz_path[i],
 383                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 384         {
 385             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 386             free( psz_dll );
 387             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 388         }
 389     }
 390 #endif
 391
 392     return VLC_EGENERIC;
 393 }
 394
 395 #ifndef WIN32
 396 static int OpenNativeDll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 397 {
 398 #if defined(HAVE_DL_DLOPEN)
 399     decoder_sys_t *p_sys = p_dec->p_sys;
 400     void *handle = 0, *context = 0;
 401     unsigned int i_result;
 402     void *p_prop;
 403     int i_prop;
 404
 405     ra_init_t init_data =
 406     {
 407         p_dec->fmt_in.audio.i_rate,
 408         p_dec->fmt_in.audio.i_bitspersample,
 409         p_dec->fmt_in.audio.i_channels,
 410         100, /* quality */
 411         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 412         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 413         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 414     };
 415
 416     msg_Dbg( p_dec, "opening library '%s'", psz_dll );
 417     if( !(handle = dlopen( psz_dll, RTLD_LAZY )) )
 418     {
 419         msg_Dbg( p_dec, "couldn't load library '%s' (%s)",
 420                  psz_dll, dlerror() );
 421         return VLC_EGENERIC;
 422     }
 423
 424     p_sys->raCloseCodec = dlsym( handle, "RACloseCodec" );
 425     p_sys->raDecode = dlsym( handle, "RADecode" );
 426     p_sys->raFlush = dlsym( handle, "RAFlush" );
 427     p_sys->raFreeDecoder = dlsym( handle, "RAFreeDecoder" );
 428     p_sys->raGetFlavorProperty = dlsym( handle, "RAGetFlavorProperty" );
 429     p_sys->raOpenCodec = dlsym( handle, "RAOpenCodec" );
 430     p_sys->raOpenCodec2 = dlsym( handle, "RAOpenCodec2" );
 431     p_sys->raInitDecoder = dlsym( handle, "RAInitDecoder" );
 432     p_sys->raSetFlavor = dlsym( handle, "RASetFlavor" );
 433     p_sys->raSetDLLAccessPath = dlsym( handle, "SetDLLAccessPath" );
 434     p_sys->raSetPwd = dlsym( handle, "RASetPwd" ); // optional, used by SIPR
 435
 436     if( !(p_sys->raOpenCodec || p_sys->raOpenCodec2) ||
 437         !p_sys->raCloseCodec || !p_sys->raInitDecoder ||
 438         !p_sys->raDecode || !p_sys->raFreeDecoder ||
 439         !p_sys->raGetFlavorProperty || !p_sys->raSetFlavor
 440         /* || !p_sys->raFlush || !p_sys->raSetDLLAccessPath */ )
 441     {
 442         goto error_native;
 443     }
 444
 445     if( p_sys->raOpenCodec2 )
 446         i_result = p_sys->raOpenCodec2( &context, psz_path );
 447     else
 448         i_result = p_sys->raOpenCodec( &context );
 449
 450     if( i_result )
 451     {
 452         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 453         goto error_native;
 454     }
 455
 456     i_result = p_sys->raInitDecoder( context, &init_data );
 457     if( i_result )
 458     {
 459         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 460         goto error_native;
 461     }
 462
 463     if( p_sys->i_codec_flavor >= 0 )
 464     {
 465         i_result = p_sys->raSetFlavor( context, p_sys->i_codec_flavor );
 466         if( i_result )
 467         {
 468             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 469                      i_result );
 470             goto error_native;
 471         }
 472
 473         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 474                                              0, &i_prop );
 475         msg_Dbg( p_dec, "audio codec: [%d] %s",
 476                  p_sys->i_codec_flavor, (char *)p_prop );
 477
 478         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 479                                              1, &i_prop );
 480         if( p_prop )
 481         {
 482             int i_bps = ((*((int*)p_prop))+4)/8;
 483             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 484                      (*((int*)p_prop))*0.001f, i_bps );
 485         }
 486     }
 487
 488     p_sys->context = context;
 489     p_sys->dll = handle;
 490     return VLC_SUCCESS;
 491
 492  error_native:
 493     if( context ) p_sys->raFreeDecoder( context );
 494     if( context ) p_sys->raCloseCodec( context );
 495     dlclose( handle );
 496 #else
 497     VLC_UNUSED( p_dec );
 498     VLC_UNUSED( psz_path);
 499     VLC_UNUSED( psz_dll );
 500 #endif
 501
 502     return VLC_EGENERIC;
 503 }
 504 #endif /* Win32 */
 505
 506 static int OpenWin32Dll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 507 {
 508 #if defined(LOADER) || defined(WIN32)
 509     decoder_sys_t *p_sys = p_dec->p_sys;
 510     void *handle = 0, *context = 0;
 511     unsigned int i_result;
 512     void *p_prop;
 513     int i_prop;
 514
 515     wra_init_t init_data =
 516     {
 517         p_dec->fmt_in.audio.i_rate,
 518         p_dec->fmt_in.audio.i_bitspersample,
 519         p_dec->fmt_in.audio.i_channels,
 520         100, /* quality */
 521         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 522         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 523         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 524     };
 525
 526     msg_Dbg( p_dec, "opening win32 dll '%s'", psz_dll );
 527
 528 #ifdef LOADER
 529     Setup_LDT_Keeper();
 530 #endif
 531
 532     if( !(handle = LoadLibraryA( psz_dll )) )
 533     {
 534         msg_Dbg( p_dec, "couldn't load dll '%s'", psz_dll );
 535         return VLC_EGENERIC;
 536     }
 537
 538     p_sys->wraCloseCodec = GetProcAddress( handle, "RACloseCodec" );
 539     p_sys->wraDecode = GetProcAddress( handle, "RADecode" );
 540     p_sys->wraFlush = GetProcAddress( handle, "RAFlush" );
 541     p_sys->wraFreeDecoder = GetProcAddress( handle, "RAFreeDecoder" );
 542     p_sys->wraGetFlavorProperty =
 543         GetProcAddress( handle, "RAGetFlavorProperty" );
 544     p_sys->wraOpenCodec = GetProcAddress( handle, "RAOpenCodec" );
 545     p_sys->wraOpenCodec2 = GetProcAddress( handle, "RAOpenCodec2" );
 546     p_sys->wraInitDecoder = GetProcAddress( handle, "RAInitDecoder" );
 547     p_sys->wraSetFlavor = GetProcAddress( handle, "RASetFlavor" );
 548     p_sys->wraSetDLLAccessPath = GetProcAddress( handle, "SetDLLAccessPath" );
 549     p_sys->wraSetPwd =
 550         GetProcAddress( handle, "RASetPwd" ); // optional, used by SIPR
 551
 552     if( !(p_sys->wraOpenCodec || p_sys->wraOpenCodec2) ||
 553         !p_sys->wraCloseCodec || !p_sys->wraInitDecoder ||
 554         !p_sys->wraDecode || !p_sys->wraFreeDecoder ||
 555         !p_sys->wraGetFlavorProperty || !p_sys->wraSetFlavor
 556         /* || !p_sys->wraFlush || !p_sys->wraSetDLLAccessPath */ )
 557     {
 558         FreeLibrary( handle );
 559         return VLC_EGENERIC;
 560     }
 561
 562     if( p_sys->wraOpenCodec2 )
 563         i_result = p_sys->wraOpenCodec2( &context, psz_path );
 564     else
 565         i_result = p_sys->wraOpenCodec( &context );
 566
 567     if( i_result )
 568     {
 569         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 570         goto error_win32;
 571     }
 572
 573     i_result = p_sys->wraInitDecoder( context, &init_data );
 574     if( i_result )
 575     {
 576         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 577         goto error_win32;
 578     }
 579
 580     if( p_sys->i_codec_flavor >= 0 )
 581     {
 582         i_result = p_sys->wraSetFlavor( context, p_sys->i_codec_flavor );
 583         if( i_result )
 584         {
 585             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 586                      i_result );
 587             goto error_win32;
 588         }
 589
 590         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 591                                               0, &i_prop );
 592         msg_Dbg( p_dec, "audio codec: [%d] %s",
 593                  p_sys->i_codec_flavor, (char *)p_prop );
 594
 595         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 596                                               1, &i_prop );
 597         if( p_prop )
 598         {
 599             int i_bps = ((*((int*)p_prop))+4)/8;
 600             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 601                      (*((int*)p_prop))*0.001f, i_bps );
 602         }
 603     }
 604
 605     p_sys->context = context;
 606     p_sys->win32_dll = handle;
 607     return VLC_SUCCESS;
 608
 609  error_win32:
 610     if( context ) p_sys->wraFreeDecoder( context );
 611     if( context ) p_sys->wraCloseCodec( context );
 612     FreeLibrary( handle );
 613 #endif
 614
 615     return VLC_EGENERIC;
 616 }
 617
 618 /*****************************************************************************
 619  * CloseDll:
 620  *****************************************************************************/
 621 static void CloseDll( decoder_t *p_dec )
 622 {
 623     decoder_sys_t *p_sys = p_dec->p_sys;
 624
 625     if( p_sys->context && p_sys->dll )
 626     {
 627         p_sys->raFreeDecoder( p_sys->context );
 628         p_sys->raCloseCodec( p_sys->context );
 629     }
 630
 631     if( p_sys->context && p_sys->win32_dll )
 632     {
 633         p_sys->wraFreeDecoder( p_sys->context );
 634         p_sys->wraCloseCodec( p_sys->context );
 635     }
 636
 637 #if defined(HAVE_DL_DLOPEN)
 638     if( p_sys->dll ) dlclose( p_sys->dll );
 639 #endif
 640
 641 #if defined(LOADER) || defined(WIN32)
 642     if( p_sys->win32_dll ) FreeLibrary( p_sys->win32_dll );
 643
 644 #if 0 //def LOADER /* Segfaults */
 645     Restore_LDT_Keeper( p_sys->ldt_fs );
 646     msg_Dbg( p_dec, "Restore_LDT_Keeper" );
 647 #endif
 648 #endif
 649
 650     p_sys->dll = 0;
 651     p_sys->win32_dll = 0;
 652     p_sys->context = 0;
 653 }
 654
 655 /*****************************************************************************
 656  * DecodeAudio:
 657  *****************************************************************************/
 658 static aout_buffer_t *Decode( decoder_t *p_dec, block_t **pp_block )
 659 {
 660     decoder_sys_t *p_sys = p_dec->p_sys;
 661     aout_buffer_t *p_aout_buffer = 0;
 662     unsigned int i_result;
 663     int i_samples;
 664     block_t *p_block;
 665
 666 #ifdef LOADER
 667     if( !p_sys->win32_dll && !p_sys->dll )
 668     {
 669         /* We must do open and close in the same thread (unless we do
 670          * Setup_LDT_Keeper in the main thread before all others */
 671         if( OpenDll( p_dec ) != VLC_SUCCESS )
 672         {
 673             /* Fatal */
 674             p_dec->b_error = true;
 675             return NULL;
 676         }
 677     }
 678 #endif
 679
 680     if( pp_block == NULL || *pp_block == NULL ) return NULL;
 681     p_block = *pp_block;
 682
 683     if( p_sys->dll )
 684         i_result = p_sys->raDecode( p_sys->context, (char *)p_block->p_buffer,
 685                                     (unsigned long)p_block->i_buffer,
 686                                     p_sys->p_out, &p_sys->i_out, -1 );
 687     else
 688         i_result = p_sys->wraDecode( p_sys->context, (char *)p_block->p_buffer,
 689                                      (unsigned long)p_block->i_buffer,
 690                                      p_sys->p_out, &p_sys->i_out, -1 );
 691
 692 #if 0
 693     msg_Err( p_dec, "decoded: %i samples (%i)",
 694              p_sys->i_out * 8 / p_dec->fmt_out.audio.i_bitspersample /
 695              p_dec->fmt_out.audio.i_channels, i_result );
 696 #endif
 697
 698     /* Date management */
 699     if( p_block->i_pts > 0 &&
 700         p_block->i_pts != date_Get( &p_sys->end_date ) )
 701     {
 702         date_Set( &p_sys->end_date, p_block->i_pts );
 703     }
 704
 705     if( !date_Get( &p_sys->end_date ) )
 706     {
 707         /* We've just started the stream, wait for the first PTS. */
 708         if( p_block ) block_Release( p_block );
 709         return NULL;
 710     }
 711
 712     i_samples = p_sys->i_out * 8 /
 713         p_dec->fmt_out.audio.i_bitspersample /p_dec->fmt_out.audio.i_channels;
 714
 715     p_aout_buffer =
 716         decoder_NewAudioBuffer( p_dec, i_samples );
 717     if( p_aout_buffer )
 718     {
 719         memcpy( p_aout_buffer->p_buffer, p_sys->p_out, p_sys->i_out );
 720
 721         /* Date management */
 722         p_aout_buffer->start_date = date_Get( &p_sys->end_date );
 723         p_aout_buffer->end_date =
 724             date_Increment( &p_sys->end_date, i_samples );
 725     }
 726
 727     block_Release( p_block );
 728     *pp_block = 0;
 729     return p_aout_buffer;
 730 }