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 static int  OpenNativeDll( decoder_t *, char *, char * );
  77 static int  OpenWin32Dll( decoder_t *, char *, char * );
  78 static void CloseDll( decoder_t * );
  79
  80 static aout_buffer_t *Decode( decoder_t *, block_t ** );
  81
  82 struct decoder_sys_t
  83 {
  84     audio_date_t end_date;
  85
  86     /* Output buffer */
  87     char *p_out;
  88     unsigned int i_out;
  89
  90     /* Codec params */
  91     void *context;
  92     short int i_codec_flavor;
  93
  94     void *dll;
  95     unsigned long (*raCloseCodec)(void*);
  96     unsigned long (*raDecode)(void*, char*, unsigned long, char*,
  97                               unsigned int*, long);
  98     unsigned long (*raFlush)(unsigned long, unsigned long, unsigned long);
  99     unsigned long (*raFreeDecoder)(void*);
 100     void*         (*raGetFlavorProperty)(void*, unsigned long,
 101                                          unsigned long, int*);
 102     unsigned long (*raInitDecoder)(void*, void*);
 103     unsigned long (*raOpenCodec)(void*);
 104     unsigned long (*raOpenCodec2)(void*, void*);
 105     unsigned long (*raSetFlavor)(void*, unsigned long);
 106     void          (*raSetDLLAccessPath)(char*);
 107     void          (*raSetPwd)(char*, char*);
 108
 109 #if defined(LOADER)
 110     ldt_fs_t *ldt_fs;
 111 #endif
 112
 113     void *win32_dll;
 114     unsigned long (WINAPI *wraCloseCodec)(void*);
 115     unsigned long (WINAPI *wraDecode)(void*, char*, unsigned long, char*,
 116                                       unsigned int*, long);
 117     unsigned long (WINAPI *wraFlush)(unsigned long, unsigned long,
 118                                      unsigned long);
 119     unsigned long (WINAPI *wraFreeDecoder)(void*);
 120     void*         (WINAPI *wraGetFlavorProperty)(void*, unsigned long,
 121                                                  unsigned long, int*);
 122     unsigned long (WINAPI *wraInitDecoder)(void*, void*);
 123     unsigned long (WINAPI *wraOpenCodec)(void*);
 124     unsigned long (WINAPI *wraOpenCodec2)(void*, void*);
 125     unsigned long (WINAPI *wraSetFlavor)(void*, unsigned long);
 126     void          (WINAPI *wraSetDLLAccessPath)(char*);
 127     void          (WINAPI *wraSetPwd)(char*, char*);
 128 };
 129
 130 /* linux dlls doesn't need packing */
 131 typedef struct /*__attribute__((__packed__))*/ {
 132     int samplerate;
 133     short bits;
 134     short channels;
 135     short quality;
 136     /* 2bytes padding here, by gcc */
 137     int bits_per_frame;
 138     int packetsize;
 139     int extradata_len;
 140     void* extradata;
 141 } ra_init_t;
 142
 143 /* windows dlls need packed structs (no padding) */
 144 typedef struct __attribute__((__packed__)) {
 145     int samplerate;
 146     short bits;
 147     short channels;
 148     short quality;
 149     int bits_per_frame;
 150     int packetsize;
 151     int extradata_len;
 152     void* extradata;
 153 } wra_init_t;
 154
 155 void *__builtin_new(unsigned long size) {return malloc(size);}
 156 void __builtin_delete(void *p) {free(p);}
 157
 158 static const int pi_channels_maps[7] =
 159 {
 160     0,
 161     AOUT_CHAN_CENTER,
 162     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 163     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 164     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 165      | AOUT_CHAN_REARRIGHT,
 166     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 167      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
 168     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 169      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
 170 };
 171
 172 /*****************************************************************************
 173  * Open: probe the decoder and return score
 174  *****************************************************************************
 175  * Tries to launch a decoder and return score so that the interface is able
 176  * to choose.
 177  *****************************************************************************/
 178 static int Open( vlc_object_t *p_this )
 179 {
 180     decoder_t *p_dec = (decoder_t*)p_this;
 181     decoder_sys_t *p_sys = p_dec->p_sys;
 182
 183     switch( p_dec->fmt_in.i_codec )
 184     {
 185     case VLC_FOURCC('c','o','o','k'):
 186     case VLC_FOURCC('a','t','r','c'):
 187     case VLC_FOURCC('s','i','p','r'):
 188         break;
 189
 190     default:
 191         return VLC_EGENERIC;
 192     }
 193
 194     /* Channel detection */
 195     if( p_dec->fmt_in.audio.i_channels <= 0 ||
 196         p_dec->fmt_in.audio.i_channels > 6 )
 197     {
 198         msg_Err( p_dec, "invalid number of channels (not between 1 and 6): %i",
 199                  p_dec->fmt_in.audio.i_channels );
 200         return VLC_EGENERIC;
 201     }
 202
 203     p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
 204     if( !p_sys )
 205         return VLC_ENOMEM;
 206     memset( p_sys, 0, sizeof(decoder_sys_t) );
 207
 208     /* Flavor for SIPR codecs */
 209     p_sys->i_codec_flavor = -1;
 210     if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','i','p','r') )
 211     {
 212         p_sys->i_codec_flavor = p_dec->fmt_in.audio.i_flavor;
 213         msg_Dbg( p_dec, "Got sipr flavor %d", p_sys->i_codec_flavor );
 214     }
 215
 216     if( OpenDll( p_dec ) != VLC_SUCCESS )
 217     {
 218         free( p_sys );
 219         return VLC_EGENERIC;
 220     }
 221
 222 #ifdef LOADER
 223     if( p_sys->win32_dll ) Close( p_this );
 224 #endif
 225
 226     es_format_Init( &p_dec->fmt_out, AUDIO_ES, AOUT_FMT_S16_NE );
 227     p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
 228     p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
 229     p_dec->fmt_out.audio.i_bitspersample =
 230         p_dec->fmt_in.audio.i_bitspersample;
 231     p_dec->fmt_out.audio.i_physical_channels =
 232     p_dec->fmt_out.audio.i_original_channels =
 233         pi_channels_maps[p_dec->fmt_out.audio.i_channels];
 234
 235     aout_DateInit( &p_sys->end_date, p_dec->fmt_out.audio.i_rate );
 236     aout_DateSet( &p_sys->end_date, 0 );
 237
 238     p_dec->pf_decode_audio = Decode;
 239
 240     p_sys->p_out = malloc( 4096 * 10 );
 241     if( !p_sys->p_out )
 242     {
 243         free( p_sys );
 244         return VLC_ENOMEM;
 245     }
 246     p_sys->i_out = 0;
 247
 248     return VLC_SUCCESS;
 249 }
 250
 251 /*****************************************************************************
 252  * Close:
 253  *****************************************************************************/
 254 static void Close( vlc_object_t *p_this )
 255 {
 256     decoder_t *p_dec = (decoder_t*)p_this;
 257
 258     CloseDll( p_dec );
 259     free( p_dec->p_sys->p_out );
 260     free( p_dec->p_sys );
 261 }
 262
 263 /*****************************************************************************
 264  * OpenDll:
 265  *****************************************************************************/
 266 static int OpenDll( decoder_t *p_dec )
 267 {
 268     char *psz_dll;
 269     int i, i_result;
 270
 271     /** Find the good path for the dlls.**/
 272     char *ppsz_path[] =
 273     {
 274       ".",
 275 #ifndef WIN32
 276       "/usr/local/RealPlayer8/Codecs",
 277       "/usr/RealPlayer8/Codecs",
 278       "/usr/lib/RealPlayer8/Codecs",
 279       "/opt/RealPlayer8/Codecs",
 280       "/usr/lib/RealPlayer9/users/Real/Codecs",
 281       "/usr/lib/RealPlayer10/codecs",
 282       "/usr/lib/RealPlayer10GOLD/codecs",
 283       "/usr/lib/helix/player/codecs",
 284       "/usr/lib64/RealPlayer8/Codecs",
 285       "/usr/lib64/RealPlayer9/users/Real/Codecs",
 286       "/usr/lib64/RealPlayer10/codecs",
 287       "/usr/lib64/RealPlayer10GOLD/codecs",
 288       "/usr/lib/win32",
 289       "/usr/lib/codecs",
 290       "/usr/local/lib/codecs",
 291 #endif
 292       NULL,
 293       NULL,
 294       NULL
 295     };
 296
 297 #ifdef WIN32
 298     char psz_win32_real_codecs[MAX_PATH + 1];
 299     char psz_win32_helix_codecs[MAX_PATH + 1];
 300
 301     {
 302         HKEY h_key;
 303         DWORD i_type, i_data = MAX_PATH + 1, i_index = 1;
 304         char *p_data;
 305
 306         p_data = psz_win32_real_codecs;
 307         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 308                           _T("Software\\RealNetworks\\Preferences\\DT_Codecs"),
 309                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 310         {
 311              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 312                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 313                  i_type == REG_SZ )
 314              {
 315                  int i_len = strlen( p_data );
 316                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 317                  ppsz_path[i_index++] = p_data;
 318                  msg_Err( p_dec, "Real: %s", p_data );
 319              }
 320              RegCloseKey( h_key );
 321         }
 322
 323         p_data = psz_win32_helix_codecs;
 324         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 325                           _T("Helix\\HelixSDK\\10.0\\Preferences\\DT_Codecs"),
 326                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 327         {
 328              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 329                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 330                  i_type == REG_SZ )
 331              {
 332                  int i_len = strlen( p_data );
 333                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 334                  ppsz_path[i_index++] = p_data;
 335                  msg_Err( p_dec, "Real: %s", p_data );
 336              }
 337              RegCloseKey( h_key );
 338         }
 339     }
 340 #endif
 341
 342
 343     /** Try the native libraries first **/
 344 #ifndef WIN32
 345     for( i = 0; ppsz_path[i]; i++ )
 346     {
 347         /* Old format */
 348         if( asprintf( &psz_dll, "%s/%4.4s.so.6.0", ppsz_path[i],
 349                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 350         {
 351             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 352             free( psz_dll );
 353             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 354         }
 355
 356         /* New format */
 357         if( asprintf( &psz_dll, "%s/%4.4s.so", ppsz_path[i],
 358                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 359         {
 360             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 361             free( psz_dll );
 362             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 363         }
 364     }
 365 #endif
 366
 367     /** Or use the WIN32 dlls **/
 368 #if defined(LOADER) || defined(WIN32)
 369     for( i = 0; ppsz_path[i]; i++ )
 370     {
 371         /* New format */
 372         if( asprintf( &psz_dll, "%s\\%4.4s.dll", ppsz_path[i],
 373                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 374         {
 375             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 376             free( psz_dll );
 377             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 378         }
 379
 380         /* Old format */
 381         if( asprintf( &psz_dll, "%s\\%4.4s3260.dll", ppsz_path[i],
 382                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 383         {
 384             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 385             free( psz_dll );
 386             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 387         }
 388     }
 389 #endif
 390
 391     return VLC_EGENERIC;
 392 }
 393
 394 static int OpenNativeDll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 395 {
 396 #if defined(HAVE_DL_DLOPEN)
 397     decoder_sys_t *p_sys = p_dec->p_sys;
 398     void *handle = 0, *context = 0;
 399     unsigned int i_result;
 400     void *p_prop;
 401     int i_prop;
 402
 403     ra_init_t init_data =
 404     {
 405         p_dec->fmt_in.audio.i_rate,
 406         p_dec->fmt_in.audio.i_bitspersample,
 407         p_dec->fmt_in.audio.i_channels,
 408         100, /* quality */
 409         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 410         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 411         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 412     };
 413
 414     msg_Dbg( p_dec, "opening library '%s'", psz_dll );
 415     if( !(handle = dlopen( psz_dll, RTLD_LAZY )) )
 416     {
 417         msg_Dbg( p_dec, "couldn't load library '%s' (%s)",
 418                  psz_dll, dlerror() );
 419         return VLC_EGENERIC;
 420     }
 421
 422     p_sys->raCloseCodec = dlsym( handle, "RACloseCodec" );
 423     p_sys->raDecode = dlsym( handle, "RADecode" );
 424     p_sys->raFlush = dlsym( handle, "RAFlush" );
 425     p_sys->raFreeDecoder = dlsym( handle, "RAFreeDecoder" );
 426     p_sys->raGetFlavorProperty = dlsym( handle, "RAGetFlavorProperty" );
 427     p_sys->raOpenCodec = dlsym( handle, "RAOpenCodec" );
 428     p_sys->raOpenCodec2 = dlsym( handle, "RAOpenCodec2" );
 429     p_sys->raInitDecoder = dlsym( handle, "RAInitDecoder" );
 430     p_sys->raSetFlavor = dlsym( handle, "RASetFlavor" );
 431     p_sys->raSetDLLAccessPath = dlsym( handle, "SetDLLAccessPath" );
 432     p_sys->raSetPwd = dlsym( handle, "RASetPwd" ); // optional, used by SIPR
 433
 434     if( !(p_sys->raOpenCodec || p_sys->raOpenCodec2) ||
 435         !p_sys->raCloseCodec || !p_sys->raInitDecoder ||
 436         !p_sys->raDecode || !p_sys->raFreeDecoder ||
 437         !p_sys->raGetFlavorProperty || !p_sys->raSetFlavor
 438         /* || !p_sys->raFlush || !p_sys->raSetDLLAccessPath */ )
 439     {
 440         goto error_native;
 441     }
 442
 443     if( p_sys->raOpenCodec2 )
 444         i_result = p_sys->raOpenCodec2( &context, psz_path );
 445     else
 446         i_result = p_sys->raOpenCodec( &context );
 447
 448     if( i_result )
 449     {
 450         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 451         goto error_native;
 452     }
 453
 454     i_result = p_sys->raInitDecoder( context, &init_data );
 455     if( i_result )
 456     {
 457         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 458         goto error_native;
 459     }
 460
 461     if( p_sys->i_codec_flavor >= 0 )
 462     {
 463         i_result = p_sys->raSetFlavor( context, p_sys->i_codec_flavor );
 464         if( i_result )
 465         {
 466             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 467                      i_result );
 468             goto error_native;
 469         }
 470
 471         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 472                                              0, &i_prop );
 473         msg_Dbg( p_dec, "audio codec: [%d] %s",
 474                  p_sys->i_codec_flavor, (char *)p_prop );
 475
 476         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 477                                              1, &i_prop );
 478         if( p_prop )
 479         {
 480             int i_bps = ((*((int*)p_prop))+4)/8;
 481             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 482                      (*((int*)p_prop))*0.001f, i_bps );
 483         }
 484     }
 485
 486     p_sys->context = context;
 487     p_sys->dll = handle;
 488     return VLC_SUCCESS;
 489
 490  error_native:
 491     if( context ) p_sys->raFreeDecoder( context );
 492     if( context ) p_sys->raCloseCodec( context );
 493     dlclose( handle );
 494 #endif
 495
 496     return VLC_EGENERIC;
 497 }
 498
 499 static int OpenWin32Dll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 500 {
 501 #if defined(LOADER) || defined(WIN32)
 502     decoder_sys_t *p_sys = p_dec->p_sys;
 503     void *handle = 0, *context = 0;
 504     unsigned int i_result;
 505     void *p_prop;
 506     int i_prop;
 507
 508     wra_init_t init_data =
 509     {
 510         p_dec->fmt_in.audio.i_rate,
 511         p_dec->fmt_in.audio.i_bitspersample,
 512         p_dec->fmt_in.audio.i_channels,
 513         100, /* quality */
 514         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 515         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 516         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 517     };
 518
 519     msg_Dbg( p_dec, "opening win32 dll '%s'", psz_dll );
 520
 521 #ifdef LOADER
 522     Setup_LDT_Keeper();
 523 #endif
 524
 525     if( !(handle = LoadLibraryA( psz_dll )) )
 526     {
 527         msg_Dbg( p_dec, "couldn't load dll '%s'", psz_dll );
 528         return VLC_EGENERIC;
 529     }
 530
 531     p_sys->wraCloseCodec = GetProcAddress( handle, "RACloseCodec" );
 532     p_sys->wraDecode = GetProcAddress( handle, "RADecode" );
 533     p_sys->wraFlush = GetProcAddress( handle, "RAFlush" );
 534     p_sys->wraFreeDecoder = GetProcAddress( handle, "RAFreeDecoder" );
 535     p_sys->wraGetFlavorProperty =
 536         GetProcAddress( handle, "RAGetFlavorProperty" );
 537     p_sys->wraOpenCodec = GetProcAddress( handle, "RAOpenCodec" );
 538     p_sys->wraOpenCodec2 = GetProcAddress( handle, "RAOpenCodec2" );
 539     p_sys->wraInitDecoder = GetProcAddress( handle, "RAInitDecoder" );
 540     p_sys->wraSetFlavor = GetProcAddress( handle, "RASetFlavor" );
 541     p_sys->wraSetDLLAccessPath = GetProcAddress( handle, "SetDLLAccessPath" );
 542     p_sys->wraSetPwd =
 543         GetProcAddress( handle, "RASetPwd" ); // optional, used by SIPR
 544
 545     if( !(p_sys->wraOpenCodec || p_sys->wraOpenCodec2) ||
 546         !p_sys->wraCloseCodec || !p_sys->wraInitDecoder ||
 547         !p_sys->wraDecode || !p_sys->wraFreeDecoder ||
 548         !p_sys->wraGetFlavorProperty || !p_sys->wraSetFlavor
 549         /* || !p_sys->wraFlush || !p_sys->wraSetDLLAccessPath */ )
 550     {
 551         FreeLibrary( handle );
 552         return VLC_EGENERIC;
 553     }
 554
 555     if( p_sys->wraOpenCodec2 )
 556         i_result = p_sys->wraOpenCodec2( &context, psz_path );
 557     else
 558         i_result = p_sys->wraOpenCodec( &context );
 559
 560     if( i_result )
 561     {
 562         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 563         goto error_win32;
 564     }
 565
 566     i_result = p_sys->wraInitDecoder( context, &init_data );
 567     if( i_result )
 568     {
 569         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 570         goto error_win32;
 571     }
 572
 573     if( p_sys->i_codec_flavor >= 0 )
 574     {
 575         i_result = p_sys->wraSetFlavor( context, p_sys->i_codec_flavor );
 576         if( i_result )
 577         {
 578             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 579                      i_result );
 580             goto error_win32;
 581         }
 582
 583         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 584                                               0, &i_prop );
 585         msg_Dbg( p_dec, "audio codec: [%d] %s",
 586                  p_sys->i_codec_flavor, (char *)p_prop );
 587
 588         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 589                                               1, &i_prop );
 590         if( p_prop )
 591         {
 592             int i_bps = ((*((int*)p_prop))+4)/8;
 593             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 594                      (*((int*)p_prop))*0.001f, i_bps );
 595         }
 596     }
 597
 598     p_sys->context = context;
 599     p_sys->win32_dll = handle;
 600     return VLC_SUCCESS;
 601
 602  error_win32:
 603     if( context ) p_sys->wraFreeDecoder( context );
 604     if( context ) p_sys->wraCloseCodec( context );
 605     FreeLibrary( handle );
 606 #endif
 607
 608     return VLC_EGENERIC;
 609 }
 610
 611 /*****************************************************************************
 612  * CloseDll:
 613  *****************************************************************************/
 614 static void CloseDll( decoder_t *p_dec )
 615 {
 616     decoder_sys_t *p_sys = p_dec->p_sys;
 617
 618     if( p_sys->context && p_sys->dll )
 619     {
 620         p_sys->raFreeDecoder( p_sys->context );
 621         p_sys->raCloseCodec( p_sys->context );
 622     }
 623
 624     if( p_sys->context && p_sys->win32_dll )
 625     {
 626         p_sys->wraFreeDecoder( p_sys->context );
 627         p_sys->wraCloseCodec( p_sys->context );
 628     }
 629
 630 #if defined(HAVE_DL_DLOPEN)
 631     if( p_sys->dll ) dlclose( p_sys->dll );
 632 #endif
 633
 634 #if defined(LOADER) || defined(WIN32)
 635     if( p_sys->win32_dll ) FreeLibrary( p_sys->win32_dll );
 636
 637 #if 0 //def LOADER /* Segfaults */
 638     Restore_LDT_Keeper( p_sys->ldt_fs );
 639     msg_Dbg( p_dec, "Restore_LDT_Keeper" );
 640 #endif
 641 #endif
 642
 643     p_sys->dll = 0;
 644     p_sys->win32_dll = 0;
 645     p_sys->context = 0;
 646 }
 647
 648 /*****************************************************************************
 649  * DecodeAudio:
 650  *****************************************************************************/
 651 static aout_buffer_t *Decode( decoder_t *p_dec, block_t **pp_block )
 652 {
 653     decoder_sys_t *p_sys = p_dec->p_sys;
 654     aout_buffer_t *p_aout_buffer = 0;
 655     unsigned int i_result;
 656     int i_samples;
 657     block_t *p_block;
 658
 659 #ifdef LOADER
 660     if( !p_sys->win32_dll && !p_sys->dll )
 661     {
 662         /* We must do open and close in the same thread (unless we do
 663          * Setup_LDT_Keeper in the main thread before all others */
 664         if( OpenDll( p_dec ) != VLC_SUCCESS )
 665         {
 666             /* Fatal */
 667             p_dec->b_error = true;
 668             return NULL;
 669         }
 670     }
 671 #endif
 672
 673     if( pp_block == NULL || *pp_block == NULL ) return NULL;
 674     p_block = *pp_block;
 675
 676     if( p_sys->dll )
 677         i_result = p_sys->raDecode( p_sys->context, (char *)p_block->p_buffer,
 678                                     (unsigned long)p_block->i_buffer,
 679                                     p_sys->p_out, &p_sys->i_out, -1 );
 680     else
 681         i_result = p_sys->wraDecode( p_sys->context, (char *)p_block->p_buffer,
 682                                      (unsigned long)p_block->i_buffer,
 683                                      p_sys->p_out, &p_sys->i_out, -1 );
 684
 685 #if 0
 686     msg_Err( p_dec, "decoded: %i samples (%i)",
 687              p_sys->i_out * 8 / p_dec->fmt_out.audio.i_bitspersample /
 688              p_dec->fmt_out.audio.i_channels, i_result );
 689 #endif
 690
 691     /* Date management */
 692     if( p_block->i_pts > 0 &&
 693         p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
 694     {
 695         aout_DateSet( &p_sys->end_date, p_block->i_pts );
 696     }
 697
 698     if( !aout_DateGet( &p_sys->end_date ) )
 699     {
 700         /* We've just started the stream, wait for the first PTS. */
 701         if( p_block ) block_Release( p_block );
 702         return NULL;
 703     }
 704
 705     i_samples = p_sys->i_out * 8 /
 706         p_dec->fmt_out.audio.i_bitspersample /p_dec->fmt_out.audio.i_channels;
 707
 708     p_aout_buffer =
 709         decoder_NewAudioBuffer( p_dec, i_samples );
 710     if( p_aout_buffer )
 711     {
 712         memcpy( p_aout_buffer->p_buffer, p_sys->p_out, p_sys->i_out );
 713
 714         /* Date management */
 715         p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
 716         p_aout_buffer->end_date =
 717             aout_DateIncrement( &p_sys->end_date, i_samples );
 718     }
 719
 720     block_Release( p_block );
 721     *pp_block = 0;
 722     return p_aout_buffer;
 723 }