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_CODEC_COOK:
 186     case VLC_CODEC_ATRAC3:
 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 = calloc( 1, sizeof( *p_sys ) );
 204     if( !p_sys )
 205         return VLC_ENOMEM;
 206
 207     /* Flavor for SIPR codecs */
 208     p_sys->i_codec_flavor = -1;
 209     if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','i','p','r') )
 210     {
 211         p_sys->i_codec_flavor = p_dec->fmt_in.audio.i_flavor;
 212         msg_Dbg( p_dec, "Got sipr flavor %d", p_sys->i_codec_flavor );
 213     }
 214
 215     if( OpenDll( p_dec ) != VLC_SUCCESS )
 216     {
 217         free( p_sys );
 218         return VLC_EGENERIC;
 219     }
 220
 221 #ifdef LOADER
 222     if( p_sys->win32_dll ) Close( p_this );
 223 #endif
 224
 225     es_format_Init( &p_dec->fmt_out, AUDIO_ES, VLC_CODEC_S16N );
 226     p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
 227     p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
 228     p_dec->fmt_out.audio.i_bitspersample =
 229         p_dec->fmt_in.audio.i_bitspersample;
 230     p_dec->fmt_out.audio.i_physical_channels =
 231     p_dec->fmt_out.audio.i_original_channels =
 232         pi_channels_maps[p_dec->fmt_out.audio.i_channels];
 233
 234     aout_DateInit( &p_sys->end_date, p_dec->fmt_out.audio.i_rate );
 235     aout_DateSet( &p_sys->end_date, 0 );
 236
 237     p_dec->pf_decode_audio = Decode;
 238
 239     p_sys->p_out = malloc( 4096 * 10 );
 240     if( !p_sys->p_out )
 241     {
 242         free( p_sys );
 243         return VLC_ENOMEM;
 244     }
 245     p_sys->i_out = 0;
 246
 247     return VLC_SUCCESS;
 248 }
 249
 250 /*****************************************************************************
 251  * Close:
 252  *****************************************************************************/
 253 static void Close( vlc_object_t *p_this )
 254 {
 255     decoder_t *p_dec = (decoder_t*)p_this;
 256
 257     CloseDll( p_dec );
 258     free( p_dec->p_sys->p_out );
 259     free( p_dec->p_sys );
 260 }
 261
 262 /*****************************************************************************
 263  * OpenDll:
 264  *****************************************************************************/
 265 static int OpenDll( decoder_t *p_dec )
 266 {
 267     char *psz_dll;
 268     int i, i_result;
 269
 270     /** Find the good path for the dlls.**/
 271     char *ppsz_path[] =
 272     {
 273       ".",
 274 #ifndef WIN32
 275       "/usr/local/RealPlayer8/Codecs",
 276       "/usr/RealPlayer8/Codecs",
 277       "/usr/lib/RealPlayer8/Codecs",
 278       "/opt/RealPlayer8/Codecs",
 279       "/usr/lib/RealPlayer9/users/Real/Codecs",
 280       "/usr/lib/RealPlayer10/codecs",
 281       "/usr/lib/RealPlayer10GOLD/codecs",
 282       "/usr/lib/helix/player/codecs",
 283       "/usr/lib64/RealPlayer8/Codecs",
 284       "/usr/lib64/RealPlayer9/users/Real/Codecs",
 285       "/usr/lib64/RealPlayer10/codecs",
 286       "/usr/lib64/RealPlayer10GOLD/codecs",
 287       "/usr/lib/win32",
 288       "/usr/lib/codecs",
 289       "/usr/local/lib/codecs",
 290 #endif
 291       NULL,
 292       NULL,
 293       NULL
 294     };
 295
 296 #ifdef WIN32
 297     char psz_win32_real_codecs[MAX_PATH + 1];
 298     char psz_win32_helix_codecs[MAX_PATH + 1];
 299
 300     {
 301         HKEY h_key;
 302         DWORD i_type, i_data = MAX_PATH + 1, i_index = 1;
 303         char *p_data;
 304
 305         p_data = psz_win32_real_codecs;
 306         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 307                           _T("Software\\RealNetworks\\Preferences\\DT_Codecs"),
 308                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 309         {
 310              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 311                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 312                  i_type == REG_SZ )
 313              {
 314                  int i_len = strlen( p_data );
 315                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 316                  ppsz_path[i_index++] = p_data;
 317                  msg_Err( p_dec, "Real: %s", p_data );
 318              }
 319              RegCloseKey( h_key );
 320         }
 321
 322         p_data = psz_win32_helix_codecs;
 323         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 324                           _T("Helix\\HelixSDK\\10.0\\Preferences\\DT_Codecs"),
 325                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 326         {
 327              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 328                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 329                  i_type == REG_SZ )
 330              {
 331                  int i_len = strlen( p_data );
 332                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 333                  ppsz_path[i_index++] = p_data;
 334                  msg_Err( p_dec, "Real: %s", p_data );
 335              }
 336              RegCloseKey( h_key );
 337         }
 338     }
 339 #endif
 340
 341
 342     /** Try the native libraries first **/
 343 #ifndef WIN32
 344     for( i = 0; ppsz_path[i]; i++ )
 345     {
 346         /* Old format */
 347         if( asprintf( &psz_dll, "%s/%4.4s.so.6.0", ppsz_path[i],
 348                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 349         {
 350             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 351             free( psz_dll );
 352             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 353         }
 354
 355         /* New format */
 356         if( asprintf( &psz_dll, "%s/%4.4s.so", ppsz_path[i],
 357                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 358         {
 359             i_result = OpenNativeDll( p_dec, ppsz_path[i], psz_dll );
 360             free( psz_dll );
 361             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 362         }
 363     }
 364 #endif
 365
 366     /** Or use the WIN32 dlls **/
 367 #if defined(LOADER) || defined(WIN32)
 368     for( i = 0; ppsz_path[i]; i++ )
 369     {
 370         /* New format */
 371         if( asprintf( &psz_dll, "%s\\%4.4s.dll", ppsz_path[i],
 372                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 373         {
 374             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 375             free( psz_dll );
 376             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 377         }
 378
 379         /* Old format */
 380         if( asprintf( &psz_dll, "%s\\%4.4s3260.dll", ppsz_path[i],
 381                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 382         {
 383             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 384             free( psz_dll );
 385             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 386         }
 387     }
 388 #endif
 389
 390     return VLC_EGENERIC;
 391 }
 392
 393 static int OpenNativeDll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 394 {
 395 #if defined(HAVE_DL_DLOPEN)
 396     decoder_sys_t *p_sys = p_dec->p_sys;
 397     void *handle = 0, *context = 0;
 398     unsigned int i_result;
 399     void *p_prop;
 400     int i_prop;
 401
 402     ra_init_t init_data =
 403     {
 404         p_dec->fmt_in.audio.i_rate,
 405         p_dec->fmt_in.audio.i_bitspersample,
 406         p_dec->fmt_in.audio.i_channels,
 407         100, /* quality */
 408         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 409         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 410         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 411     };
 412
 413     msg_Dbg( p_dec, "opening library '%s'", psz_dll );
 414     if( !(handle = dlopen( psz_dll, RTLD_LAZY )) )
 415     {
 416         msg_Dbg( p_dec, "couldn't load library '%s' (%s)",
 417                  psz_dll, dlerror() );
 418         return VLC_EGENERIC;
 419     }
 420
 421     p_sys->raCloseCodec = dlsym( handle, "RACloseCodec" );
 422     p_sys->raDecode = dlsym( handle, "RADecode" );
 423     p_sys->raFlush = dlsym( handle, "RAFlush" );
 424     p_sys->raFreeDecoder = dlsym( handle, "RAFreeDecoder" );
 425     p_sys->raGetFlavorProperty = dlsym( handle, "RAGetFlavorProperty" );
 426     p_sys->raOpenCodec = dlsym( handle, "RAOpenCodec" );
 427     p_sys->raOpenCodec2 = dlsym( handle, "RAOpenCodec2" );
 428     p_sys->raInitDecoder = dlsym( handle, "RAInitDecoder" );
 429     p_sys->raSetFlavor = dlsym( handle, "RASetFlavor" );
 430     p_sys->raSetDLLAccessPath = dlsym( handle, "SetDLLAccessPath" );
 431     p_sys->raSetPwd = dlsym( handle, "RASetPwd" ); // optional, used by SIPR
 432
 433     if( !(p_sys->raOpenCodec || p_sys->raOpenCodec2) ||
 434         !p_sys->raCloseCodec || !p_sys->raInitDecoder ||
 435         !p_sys->raDecode || !p_sys->raFreeDecoder ||
 436         !p_sys->raGetFlavorProperty || !p_sys->raSetFlavor
 437         /* || !p_sys->raFlush || !p_sys->raSetDLLAccessPath */ )
 438     {
 439         goto error_native;
 440     }
 441
 442     if( p_sys->raOpenCodec2 )
 443         i_result = p_sys->raOpenCodec2( &context, psz_path );
 444     else
 445         i_result = p_sys->raOpenCodec( &context );
 446
 447     if( i_result )
 448     {
 449         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 450         goto error_native;
 451     }
 452
 453     i_result = p_sys->raInitDecoder( context, &init_data );
 454     if( i_result )
 455     {
 456         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 457         goto error_native;
 458     }
 459
 460     if( p_sys->i_codec_flavor >= 0 )
 461     {
 462         i_result = p_sys->raSetFlavor( context, p_sys->i_codec_flavor );
 463         if( i_result )
 464         {
 465             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 466                      i_result );
 467             goto error_native;
 468         }
 469
 470         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 471                                              0, &i_prop );
 472         msg_Dbg( p_dec, "audio codec: [%d] %s",
 473                  p_sys->i_codec_flavor, (char *)p_prop );
 474
 475         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 476                                              1, &i_prop );
 477         if( p_prop )
 478         {
 479             int i_bps = ((*((int*)p_prop))+4)/8;
 480             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 481                      (*((int*)p_prop))*0.001f, i_bps );
 482         }
 483     }
 484
 485     p_sys->context = context;
 486     p_sys->dll = handle;
 487     return VLC_SUCCESS;
 488
 489  error_native:
 490     if( context ) p_sys->raFreeDecoder( context );
 491     if( context ) p_sys->raCloseCodec( context );
 492     dlclose( handle );
 493 #endif
 494
 495     return VLC_EGENERIC;
 496 }
 497
 498 static int OpenWin32Dll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 499 {
 500 #if defined(LOADER) || defined(WIN32)
 501     decoder_sys_t *p_sys = p_dec->p_sys;
 502     void *handle = 0, *context = 0;
 503     unsigned int i_result;
 504     void *p_prop;
 505     int i_prop;
 506
 507     wra_init_t init_data =
 508     {
 509         p_dec->fmt_in.audio.i_rate,
 510         p_dec->fmt_in.audio.i_bitspersample,
 511         p_dec->fmt_in.audio.i_channels,
 512         100, /* quality */
 513         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 514         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 515         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 516     };
 517
 518     msg_Dbg( p_dec, "opening win32 dll '%s'", psz_dll );
 519
 520 #ifdef LOADER
 521     Setup_LDT_Keeper();
 522 #endif
 523
 524     if( !(handle = LoadLibraryA( psz_dll )) )
 525     {
 526         msg_Dbg( p_dec, "couldn't load dll '%s'", psz_dll );
 527         return VLC_EGENERIC;
 528     }
 529
 530     p_sys->wraCloseCodec = GetProcAddress( handle, "RACloseCodec" );
 531     p_sys->wraDecode = GetProcAddress( handle, "RADecode" );
 532     p_sys->wraFlush = GetProcAddress( handle, "RAFlush" );
 533     p_sys->wraFreeDecoder = GetProcAddress( handle, "RAFreeDecoder" );
 534     p_sys->wraGetFlavorProperty =
 535         GetProcAddress( handle, "RAGetFlavorProperty" );
 536     p_sys->wraOpenCodec = GetProcAddress( handle, "RAOpenCodec" );
 537     p_sys->wraOpenCodec2 = GetProcAddress( handle, "RAOpenCodec2" );
 538     p_sys->wraInitDecoder = GetProcAddress( handle, "RAInitDecoder" );
 539     p_sys->wraSetFlavor = GetProcAddress( handle, "RASetFlavor" );
 540     p_sys->wraSetDLLAccessPath = GetProcAddress( handle, "SetDLLAccessPath" );
 541     p_sys->wraSetPwd =
 542         GetProcAddress( handle, "RASetPwd" ); // optional, used by SIPR
 543
 544     if( !(p_sys->wraOpenCodec || p_sys->wraOpenCodec2) ||
 545         !p_sys->wraCloseCodec || !p_sys->wraInitDecoder ||
 546         !p_sys->wraDecode || !p_sys->wraFreeDecoder ||
 547         !p_sys->wraGetFlavorProperty || !p_sys->wraSetFlavor
 548         /* || !p_sys->wraFlush || !p_sys->wraSetDLLAccessPath */ )
 549     {
 550         FreeLibrary( handle );
 551         return VLC_EGENERIC;
 552     }
 553
 554     if( p_sys->wraOpenCodec2 )
 555         i_result = p_sys->wraOpenCodec2( &context, psz_path );
 556     else
 557         i_result = p_sys->wraOpenCodec( &context );
 558
 559     if( i_result )
 560     {
 561         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 562         goto error_win32;
 563     }
 564
 565     i_result = p_sys->wraInitDecoder( context, &init_data );
 566     if( i_result )
 567     {
 568         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 569         goto error_win32;
 570     }
 571
 572     if( p_sys->i_codec_flavor >= 0 )
 573     {
 574         i_result = p_sys->wraSetFlavor( context, p_sys->i_codec_flavor );
 575         if( i_result )
 576         {
 577             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 578                      i_result );
 579             goto error_win32;
 580         }
 581
 582         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 583                                               0, &i_prop );
 584         msg_Dbg( p_dec, "audio codec: [%d] %s",
 585                  p_sys->i_codec_flavor, (char *)p_prop );
 586
 587         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 588                                               1, &i_prop );
 589         if( p_prop )
 590         {
 591             int i_bps = ((*((int*)p_prop))+4)/8;
 592             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 593                      (*((int*)p_prop))*0.001f, i_bps );
 594         }
 595     }
 596
 597     p_sys->context = context;
 598     p_sys->win32_dll = handle;
 599     return VLC_SUCCESS;
 600
 601  error_win32:
 602     if( context ) p_sys->wraFreeDecoder( context );
 603     if( context ) p_sys->wraCloseCodec( context );
 604     FreeLibrary( handle );
 605 #endif
 606
 607     return VLC_EGENERIC;
 608 }
 609
 610 /*****************************************************************************
 611  * CloseDll:
 612  *****************************************************************************/
 613 static void CloseDll( decoder_t *p_dec )
 614 {
 615     decoder_sys_t *p_sys = p_dec->p_sys;
 616
 617     if( p_sys->context && p_sys->dll )
 618     {
 619         p_sys->raFreeDecoder( p_sys->context );
 620         p_sys->raCloseCodec( p_sys->context );
 621     }
 622
 623     if( p_sys->context && p_sys->win32_dll )
 624     {
 625         p_sys->wraFreeDecoder( p_sys->context );
 626         p_sys->wraCloseCodec( p_sys->context );
 627     }
 628
 629 #if defined(HAVE_DL_DLOPEN)
 630     if( p_sys->dll ) dlclose( p_sys->dll );
 631 #endif
 632
 633 #if defined(LOADER) || defined(WIN32)
 634     if( p_sys->win32_dll ) FreeLibrary( p_sys->win32_dll );
 635
 636 #if 0 //def LOADER /* Segfaults */
 637     Restore_LDT_Keeper( p_sys->ldt_fs );
 638     msg_Dbg( p_dec, "Restore_LDT_Keeper" );
 639 #endif
 640 #endif
 641
 642     p_sys->dll = 0;
 643     p_sys->win32_dll = 0;
 644     p_sys->context = 0;
 645 }
 646
 647 /*****************************************************************************
 648  * DecodeAudio:
 649  *****************************************************************************/
 650 static aout_buffer_t *Decode( decoder_t *p_dec, block_t **pp_block )
 651 {
 652     decoder_sys_t *p_sys = p_dec->p_sys;
 653     aout_buffer_t *p_aout_buffer = 0;
 654     unsigned int i_result;
 655     int i_samples;
 656     block_t *p_block;
 657
 658 #ifdef LOADER
 659     if( !p_sys->win32_dll && !p_sys->dll )
 660     {
 661         /* We must do open and close in the same thread (unless we do
 662          * Setup_LDT_Keeper in the main thread before all others */
 663         if( OpenDll( p_dec ) != VLC_SUCCESS )
 664         {
 665             /* Fatal */
 666             p_dec->b_error = true;
 667             return NULL;
 668         }
 669     }
 670 #endif
 671
 672     if( pp_block == NULL || *pp_block == NULL ) return NULL;
 673     p_block = *pp_block;
 674
 675     if( p_sys->dll )
 676         i_result = p_sys->raDecode( p_sys->context, (char *)p_block->p_buffer,
 677                                     (unsigned long)p_block->i_buffer,
 678                                     p_sys->p_out, &p_sys->i_out, -1 );
 679     else
 680         i_result = p_sys->wraDecode( p_sys->context, (char *)p_block->p_buffer,
 681                                      (unsigned long)p_block->i_buffer,
 682                                      p_sys->p_out, &p_sys->i_out, -1 );
 683
 684 #if 0
 685     msg_Err( p_dec, "decoded: %i samples (%i)",
 686              p_sys->i_out * 8 / p_dec->fmt_out.audio.i_bitspersample /
 687              p_dec->fmt_out.audio.i_channels, i_result );
 688 #endif
 689
 690     /* Date management */
 691     if( p_block->i_pts > 0 &&
 692         p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
 693     {
 694         aout_DateSet( &p_sys->end_date, p_block->i_pts );
 695     }
 696
 697     if( !aout_DateGet( &p_sys->end_date ) )
 698     {
 699         /* We've just started the stream, wait for the first PTS. */
 700         if( p_block ) block_Release( p_block );
 701         return NULL;
 702     }
 703
 704     i_samples = p_sys->i_out * 8 /
 705         p_dec->fmt_out.audio.i_bitspersample /p_dec->fmt_out.audio.i_channels;
 706
 707     p_aout_buffer =
 708         decoder_NewAudioBuffer( p_dec, i_samples );
 709     if( p_aout_buffer )
 710     {
 711         memcpy( p_aout_buffer->p_buffer, p_sys->p_out, p_sys->i_out );
 712
 713         /* Date management */
 714         p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
 715         p_aout_buffer->end_date =
 716             aout_DateIncrement( &p_sys->end_date, i_samples );
 717     }
 718
 719     block_Release( p_block );
 720     *pp_block = 0;
 721     return p_aout_buffer;
 722 }