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 #if defined(LOADER) || defined(WIN32)
  80 static int  OpenWin32Dll( decoder_t *, char *, char * );
  81 #endif
  82 static void CloseDll( decoder_t * );
  83
  84 static aout_buffer_t *Decode( decoder_t *, block_t ** );
  85
  86 struct decoder_sys_t
  87 {
  88     date_t end_date;
  89
  90     /* Output buffer */
  91     char *p_out;
  92     unsigned int i_out;
  93
  94     /* Codec params */
  95     void *context;
  96     short int i_codec_flavor;
  97
  98     void *dll;
  99     unsigned long (*raCloseCodec)(void*);
 100     unsigned long (*raDecode)(void*, char*, unsigned long, char*,
 101                               unsigned int*, long);
 102     unsigned long (*raFlush)(unsigned long, unsigned long, unsigned long);
 103     unsigned long (*raFreeDecoder)(void*);
 104     void*         (*raGetFlavorProperty)(void*, unsigned long,
 105                                          unsigned long, int*);
 106     unsigned long (*raInitDecoder)(void*, void*);
 107     unsigned long (*raOpenCodec)(void*);
 108     unsigned long (*raOpenCodec2)(void*, void*);
 109     unsigned long (*raSetFlavor)(void*, unsigned long);
 110     void          (*raSetDLLAccessPath)(char*);
 111     void          (*raSetPwd)(char*, char*);
 112
 113 #if defined(LOADER)
 114     ldt_fs_t *ldt_fs;
 115 #endif
 116
 117     void *win32_dll;
 118     unsigned long (WINAPI *wraCloseCodec)(void*);
 119     unsigned long (WINAPI *wraDecode)(void*, char*, unsigned long, char*,
 120                                       unsigned int*, long);
 121     unsigned long (WINAPI *wraFlush)(unsigned long, unsigned long,
 122                                      unsigned long);
 123     unsigned long (WINAPI *wraFreeDecoder)(void*);
 124     void*         (WINAPI *wraGetFlavorProperty)(void*, unsigned long,
 125                                                  unsigned long, int*);
 126     unsigned long (WINAPI *wraInitDecoder)(void*, void*);
 127     unsigned long (WINAPI *wraOpenCodec)(void*);
 128     unsigned long (WINAPI *wraOpenCodec2)(void*, void*);
 129     unsigned long (WINAPI *wraSetFlavor)(void*, unsigned long);
 130     void          (WINAPI *wraSetDLLAccessPath)(char*);
 131     void          (WINAPI *wraSetPwd)(char*, char*);
 132 };
 133
 134 /* linux dlls doesn't need packing */
 135 typedef struct /*__attribute__((__packed__))*/ {
 136     int samplerate;
 137     short bits;
 138     short channels;
 139     short quality;
 140     /* 2bytes padding here, by gcc */
 141     int bits_per_frame;
 142     int packetsize;
 143     int extradata_len;
 144     void* extradata;
 145 } ra_init_t;
 146
 147 /* windows dlls need packed structs (no padding) */
 148 typedef struct __attribute__((__packed__)) {
 149     int samplerate;
 150     short bits;
 151     short channels;
 152     short quality;
 153     int bits_per_frame;
 154     int packetsize;
 155     int extradata_len;
 156     void* extradata;
 157 } wra_init_t;
 158
 159 #if 0 /* I have no idea what this is doing here */
 160 void *__builtin_new(unsigned long size) {return malloc(size);}
 161 void __builtin_delete(void *p) {free(p);}
 162 #endif
 163
 164 static const int pi_channels_maps[7] =
 165 {
 166     0,
 167     AOUT_CHAN_CENTER,
 168     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 169     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 170     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 171      | AOUT_CHAN_REARRIGHT,
 172     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 173      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
 174     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 175      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
 176 };
 177
 178 /*****************************************************************************
 179  * Open: probe the decoder and return score
 180  *****************************************************************************
 181  * Tries to launch a decoder and return score so that the interface is able
 182  * to choose.
 183  *****************************************************************************/
 184 static int Open( vlc_object_t *p_this )
 185 {
 186     decoder_t *p_dec = (decoder_t*)p_this;
 187     decoder_sys_t *p_sys = p_dec->p_sys;
 188
 189     switch( p_dec->fmt_in.i_codec )
 190     {
 191     case VLC_CODEC_COOK:
 192     case VLC_CODEC_ATRAC3:
 193     case VLC_FOURCC('s','i','p','r'):
 194         break;
 195
 196     default:
 197         return VLC_EGENERIC;
 198     }
 199
 200     /* Channel detection */
 201     if( p_dec->fmt_in.audio.i_channels <= 0 ||
 202         p_dec->fmt_in.audio.i_channels > 6 )
 203     {
 204         msg_Err( p_dec, "invalid number of channels (not between 1 and 6): %i",
 205                  p_dec->fmt_in.audio.i_channels );
 206         return VLC_EGENERIC;
 207     }
 208
 209     p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
 210     if( !p_sys )
 211         return VLC_ENOMEM;
 212
 213     /* Flavor for SIPR codecs */
 214     p_sys->i_codec_flavor = -1;
 215     if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','i','p','r') )
 216     {
 217         p_sys->i_codec_flavor = p_dec->fmt_in.audio.i_flavor;
 218         msg_Dbg( p_dec, "Got sipr flavor %d", p_sys->i_codec_flavor );
 219     }
 220
 221     if( OpenDll( p_dec ) != VLC_SUCCESS )
 222     {
 223         free( p_sys );
 224         return VLC_EGENERIC;
 225     }
 226
 227 #ifdef LOADER
 228     if( p_sys->win32_dll ) Close( p_this );
 229 #endif
 230
 231     es_format_Init( &p_dec->fmt_out, AUDIO_ES, VLC_CODEC_S16N );
 232     p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
 233     p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
 234     p_dec->fmt_out.audio.i_bitspersample =
 235         p_dec->fmt_in.audio.i_bitspersample;
 236     p_dec->fmt_out.audio.i_physical_channels =
 237     p_dec->fmt_out.audio.i_original_channels =
 238         pi_channels_maps[p_dec->fmt_out.audio.i_channels];
 239
 240     date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
 241     date_Set( &p_sys->end_date, 0 );
 242
 243     p_dec->pf_decode_audio = Decode;
 244
 245     p_sys->p_out = malloc( 4096 * 10 );
 246     if( !p_sys->p_out )
 247     {
 248         free( p_sys );
 249         return VLC_ENOMEM;
 250     }
 251     p_sys->i_out = 0;
 252
 253     return VLC_SUCCESS;
 254 }
 255
 256 /*****************************************************************************
 257  * Close:
 258  *****************************************************************************/
 259 static void Close( vlc_object_t *p_this )
 260 {
 261     decoder_t *p_dec = (decoder_t*)p_this;
 262
 263     CloseDll( p_dec );
 264     free( p_dec->p_sys->p_out );
 265     free( p_dec->p_sys );
 266 }
 267
 268 /*****************************************************************************
 269  * OpenDll:
 270  *****************************************************************************/
 271 static int OpenDll( decoder_t *p_dec )
 272 {
 273     char *psz_dll;
 274     int i, i_result;
 275
 276     /** Find the good path for the dlls.**/
 277     const char *ppsz_path[] =
 278     {
 279       ".",
 280 #ifndef WIN32
 281       "/usr/local/RealPlayer8/Codecs",
 282       "/usr/RealPlayer8/Codecs",
 283       "/usr/lib/RealPlayer8/Codecs",
 284       "/opt/RealPlayer8/Codecs",
 285       "/usr/lib/RealPlayer9/users/Real/Codecs",
 286       "/usr/lib/RealPlayer10/codecs",
 287       "/usr/lib/RealPlayer10GOLD/codecs",
 288       "/usr/lib/helix/player/codecs",
 289       "/usr/lib64/RealPlayer8/Codecs",
 290       "/usr/lib64/RealPlayer9/users/Real/Codecs",
 291       "/usr/lib64/RealPlayer10/codecs",
 292       "/usr/lib64/RealPlayer10GOLD/codecs",
 293       "/usr/lib/win32",
 294       "/usr/lib/codecs",
 295       "/usr/local/lib/codecs",
 296 #endif
 297       NULL,
 298       NULL,
 299       NULL
 300     };
 301
 302 #ifdef WIN32
 303     char psz_win32_real_codecs[MAX_PATH + 1];
 304     char psz_win32_helix_codecs[MAX_PATH + 1];
 305
 306     {
 307         HKEY h_key;
 308         DWORD i_type, i_data = MAX_PATH + 1, i_index = 1;
 309         char *p_data;
 310
 311         p_data = psz_win32_real_codecs;
 312         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 313                           _T("Software\\RealNetworks\\Preferences\\DT_Codecs"),
 314                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 315         {
 316              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 317                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 318                  i_type == REG_SZ )
 319              {
 320                  int i_len = strlen( p_data );
 321                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 322                  ppsz_path[i_index++] = p_data;
 323                  msg_Err( p_dec, "Real: %s", p_data );
 324              }
 325              RegCloseKey( h_key );
 326         }
 327
 328         p_data = psz_win32_helix_codecs;
 329         if( RegOpenKeyEx( HKEY_CLASSES_ROOT,
 330                           _T("Helix\\HelixSDK\\10.0\\Preferences\\DT_Codecs"),
 331                           0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 332         {
 333              if( RegQueryValueEx( h_key, _T(""), 0, &i_type,
 334                                   (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS &&
 335                  i_type == REG_SZ )
 336              {
 337                  int i_len = strlen( p_data );
 338                  if( i_len && p_data[i_len-1] == '\\' ) p_data[i_len-1] = 0;
 339                  ppsz_path[i_index++] = p_data;
 340                  msg_Err( p_dec, "Real: %s", p_data );
 341              }
 342              RegCloseKey( h_key );
 343         }
 344     }
 345 #endif
 346
 347
 348     /** Try the native libraries first **/
 349 #ifndef WIN32
 350     for( i = 0; ppsz_path[i]; i++ )
 351     {
 352         /* Old format */
 353         if( asprintf( &psz_dll, "%s/%4.4s.so.6.0", ppsz_path[i],
 354                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 355         {
 356             i_result = OpenNativeDll( p_dec, (char *)ppsz_path[i], psz_dll );
 357             free( psz_dll );
 358             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 359         }
 360
 361         /* New format */
 362         if( asprintf( &psz_dll, "%s/%4.4s.so", ppsz_path[i],
 363                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 364         {
 365             i_result = OpenNativeDll( p_dec, (char *)ppsz_path[i], psz_dll );
 366             free( psz_dll );
 367             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 368         }
 369     }
 370 #endif
 371
 372     /** Or use the WIN32 dlls **/
 373 #if defined(LOADER) || defined(WIN32)
 374     for( i = 0; ppsz_path[i]; i++ )
 375     {
 376         /* New format */
 377         if( asprintf( &psz_dll, "%s\\%4.4s.dll", ppsz_path[i],
 378                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 379         {
 380             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 381             free( psz_dll );
 382             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 383         }
 384
 385         /* Old format */
 386         if( asprintf( &psz_dll, "%s\\%4.4s3260.dll", ppsz_path[i],
 387                   (char *)&p_dec->fmt_in.i_codec ) != -1 )
 388         {
 389             i_result = OpenWin32Dll( p_dec, ppsz_path[i], psz_dll );
 390             free( psz_dll );
 391             if( i_result == VLC_SUCCESS ) return VLC_SUCCESS;
 392         }
 393     }
 394 #endif
 395
 396     return VLC_EGENERIC;
 397 }
 398
 399 #ifndef WIN32
 400 static int OpenNativeDll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 401 {
 402 #if defined(HAVE_DL_DLOPEN)
 403     decoder_sys_t *p_sys = p_dec->p_sys;
 404     void *handle = 0, *context = 0;
 405     unsigned int i_result;
 406     void *p_prop;
 407     int i_prop;
 408
 409     ra_init_t init_data =
 410     {
 411         p_dec->fmt_in.audio.i_rate,
 412         p_dec->fmt_in.audio.i_bitspersample,
 413         p_dec->fmt_in.audio.i_channels,
 414         100, /* quality */
 415         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 416         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 417         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 418     };
 419
 420     msg_Dbg( p_dec, "opening library '%s'", psz_dll );
 421     if( !(handle = dlopen( psz_dll, RTLD_LAZY )) )
 422     {
 423         msg_Dbg( p_dec, "couldn't load library '%s' (%s)",
 424                  psz_dll, dlerror() );
 425         return VLC_EGENERIC;
 426     }
 427
 428     p_sys->raCloseCodec = dlsym( handle, "RACloseCodec" );
 429     p_sys->raDecode = dlsym( handle, "RADecode" );
 430     p_sys->raFlush = dlsym( handle, "RAFlush" );
 431     p_sys->raFreeDecoder = dlsym( handle, "RAFreeDecoder" );
 432     p_sys->raGetFlavorProperty = dlsym( handle, "RAGetFlavorProperty" );
 433     p_sys->raOpenCodec = dlsym( handle, "RAOpenCodec" );
 434     p_sys->raOpenCodec2 = dlsym( handle, "RAOpenCodec2" );
 435     p_sys->raInitDecoder = dlsym( handle, "RAInitDecoder" );
 436     p_sys->raSetFlavor = dlsym( handle, "RASetFlavor" );
 437     p_sys->raSetDLLAccessPath = dlsym( handle, "SetDLLAccessPath" );
 438     p_sys->raSetPwd = dlsym( handle, "RASetPwd" ); // optional, used by SIPR
 439
 440     if( !(p_sys->raOpenCodec || p_sys->raOpenCodec2) ||
 441         !p_sys->raCloseCodec || !p_sys->raInitDecoder ||
 442         !p_sys->raDecode || !p_sys->raFreeDecoder ||
 443         !p_sys->raGetFlavorProperty || !p_sys->raSetFlavor
 444         /* || !p_sys->raFlush || !p_sys->raSetDLLAccessPath */ )
 445     {
 446         goto error_native;
 447     }
 448
 449     if( p_sys->raOpenCodec2 )
 450         i_result = p_sys->raOpenCodec2( &context, psz_path );
 451     else
 452         i_result = p_sys->raOpenCodec( &context );
 453
 454     if( i_result )
 455     {
 456         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 457         goto error_native;
 458     }
 459
 460     i_result = p_sys->raInitDecoder( context, &init_data );
 461     if( i_result )
 462     {
 463         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 464         goto error_native;
 465     }
 466
 467     if( p_sys->i_codec_flavor >= 0 )
 468     {
 469         i_result = p_sys->raSetFlavor( context, p_sys->i_codec_flavor );
 470         if( i_result )
 471         {
 472             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 473                      i_result );
 474             goto error_native;
 475         }
 476
 477         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 478                                              0, &i_prop );
 479         msg_Dbg( p_dec, "audio codec: [%d] %s",
 480                  p_sys->i_codec_flavor, (char *)p_prop );
 481
 482         p_prop = p_sys->raGetFlavorProperty( context, p_sys->i_codec_flavor,
 483                                              1, &i_prop );
 484         if( p_prop )
 485         {
 486             int i_bps = ((*((int*)p_prop))+4)/8;
 487             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 488                      (*((int*)p_prop))*0.001f, i_bps );
 489         }
 490     }
 491
 492     p_sys->context = context;
 493     p_sys->dll = handle;
 494     return VLC_SUCCESS;
 495
 496  error_native:
 497     if( context ) p_sys->raFreeDecoder( context );
 498     if( context ) p_sys->raCloseCodec( context );
 499     dlclose( handle );
 500 #else
 501     VLC_UNUSED( p_dec );
 502     VLC_UNUSED( psz_path);
 503     VLC_UNUSED( psz_dll );
 504 #endif
 505
 506     return VLC_EGENERIC;
 507 }
 508 #endif /* Win32 */
 509
 510 #if defined(LOADER) || defined(WIN32)
 511 static int OpenWin32Dll( decoder_t *p_dec, char *psz_path, char *psz_dll )
 512 {
 513     decoder_sys_t *p_sys = p_dec->p_sys;
 514     void *handle = 0, *context = 0;
 515     unsigned int i_result;
 516     void *p_prop;
 517     int i_prop;
 518
 519     wra_init_t init_data =
 520     {
 521         p_dec->fmt_in.audio.i_rate,
 522         p_dec->fmt_in.audio.i_bitspersample,
 523         p_dec->fmt_in.audio.i_channels,
 524         100, /* quality */
 525         p_dec->fmt_in.audio.i_blockalign, /* subpacket size */
 526         p_dec->fmt_in.audio.i_blockalign, /* coded frame size */
 527         p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra
 528     };
 529
 530     msg_Dbg( p_dec, "opening win32 dll '%s'", psz_dll );
 531
 532 #ifdef LOADER
 533     Setup_LDT_Keeper();
 534 #endif
 535
 536     if( !(handle = LoadLibraryA( psz_dll )) )
 537     {
 538         msg_Dbg( p_dec, "couldn't load dll '%s'", psz_dll );
 539         return VLC_EGENERIC;
 540     }
 541
 542     p_sys->wraCloseCodec = GetProcAddress( handle, "RACloseCodec" );
 543     p_sys->wraDecode = GetProcAddress( handle, "RADecode" );
 544     p_sys->wraFlush = GetProcAddress( handle, "RAFlush" );
 545     p_sys->wraFreeDecoder = GetProcAddress( handle, "RAFreeDecoder" );
 546     p_sys->wraGetFlavorProperty =
 547         GetProcAddress( handle, "RAGetFlavorProperty" );
 548     p_sys->wraOpenCodec = GetProcAddress( handle, "RAOpenCodec" );
 549     p_sys->wraOpenCodec2 = GetProcAddress( handle, "RAOpenCodec2" );
 550     p_sys->wraInitDecoder = GetProcAddress( handle, "RAInitDecoder" );
 551     p_sys->wraSetFlavor = GetProcAddress( handle, "RASetFlavor" );
 552     p_sys->wraSetDLLAccessPath = GetProcAddress( handle, "SetDLLAccessPath" );
 553     p_sys->wraSetPwd =
 554         GetProcAddress( handle, "RASetPwd" ); // optional, used by SIPR
 555
 556     if( !(p_sys->wraOpenCodec || p_sys->wraOpenCodec2) ||
 557         !p_sys->wraCloseCodec || !p_sys->wraInitDecoder ||
 558         !p_sys->wraDecode || !p_sys->wraFreeDecoder ||
 559         !p_sys->wraGetFlavorProperty || !p_sys->wraSetFlavor
 560         /* || !p_sys->wraFlush || !p_sys->wraSetDLLAccessPath */ )
 561     {
 562         FreeLibrary( handle );
 563         return VLC_EGENERIC;
 564     }
 565
 566     if( p_sys->wraOpenCodec2 )
 567         i_result = p_sys->wraOpenCodec2( &context, psz_path );
 568     else
 569         i_result = p_sys->wraOpenCodec( &context );
 570
 571     if( i_result )
 572     {
 573         msg_Err( p_dec, "decoder open failed, error code: 0x%x", i_result );
 574         goto error_win32;
 575     }
 576
 577     i_result = p_sys->wraInitDecoder( context, &init_data );
 578     if( i_result )
 579     {
 580         msg_Err( p_dec, "decoder init failed, error code: 0x%x", i_result );
 581         goto error_win32;
 582     }
 583
 584     if( p_sys->i_codec_flavor >= 0 )
 585     {
 586         i_result = p_sys->wraSetFlavor( context, p_sys->i_codec_flavor );
 587         if( i_result )
 588         {
 589             msg_Err( p_dec, "decoder flavor setup failed, error code: 0x%x",
 590                      i_result );
 591             goto error_win32;
 592         }
 593
 594         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 595                                               0, &i_prop );
 596         msg_Dbg( p_dec, "audio codec: [%d] %s",
 597                  p_sys->i_codec_flavor, (char *)p_prop );
 598
 599         p_prop = p_sys->wraGetFlavorProperty( context, p_sys->i_codec_flavor,
 600                                               1, &i_prop );
 601         if( p_prop )
 602         {
 603             int i_bps = ((*((int*)p_prop))+4)/8;
 604             msg_Dbg( p_dec, "audio bitrate: %5.3f kbit/s (%d bps)",
 605                      (*((int*)p_prop))*0.001f, i_bps );
 606         }
 607     }
 608
 609     p_sys->context = context;
 610     p_sys->win32_dll = handle;
 611     return VLC_SUCCESS;
 612
 613  error_win32:
 614     if( context ) p_sys->wraFreeDecoder( context );
 615     if( context ) p_sys->wraCloseCodec( context );
 616     FreeLibrary( handle );
 617
 618     return VLC_EGENERIC;
 619 }
 620 #endif
 621
 622 /*****************************************************************************
 623  * CloseDll:
 624  *****************************************************************************/
 625 static void CloseDll( decoder_t *p_dec )
 626 {
 627     decoder_sys_t *p_sys = p_dec->p_sys;
 628
 629     if( p_sys->context && p_sys->dll )
 630     {
 631         p_sys->raFreeDecoder( p_sys->context );
 632         p_sys->raCloseCodec( p_sys->context );
 633     }
 634
 635     if( p_sys->context && p_sys->win32_dll )
 636     {
 637         p_sys->wraFreeDecoder( p_sys->context );
 638         p_sys->wraCloseCodec( p_sys->context );
 639     }
 640
 641 #if defined(HAVE_DL_DLOPEN)
 642     if( p_sys->dll ) dlclose( p_sys->dll );
 643 #endif
 644
 645 #if defined(LOADER) || defined(WIN32)
 646     if( p_sys->win32_dll ) FreeLibrary( p_sys->win32_dll );
 647
 648 #if 0 //def LOADER /* Segfaults */
 649     Restore_LDT_Keeper( p_sys->ldt_fs );
 650     msg_Dbg( p_dec, "Restore_LDT_Keeper" );
 651 #endif
 652 #endif
 653
 654     p_sys->dll = 0;
 655     p_sys->win32_dll = 0;
 656     p_sys->context = 0;
 657 }
 658
 659 /*****************************************************************************
 660  * DecodeAudio:
 661  *****************************************************************************/
 662 static aout_buffer_t *Decode( decoder_t *p_dec, block_t **pp_block )
 663 {
 664     decoder_sys_t *p_sys = p_dec->p_sys;
 665     aout_buffer_t *p_aout_buffer = 0;
 666     unsigned int i_result;
 667     int i_samples;
 668     block_t *p_block;
 669
 670 #ifdef LOADER
 671     if( !p_sys->win32_dll && !p_sys->dll )
 672     {
 673         /* We must do open and close in the same thread (unless we do
 674          * Setup_LDT_Keeper in the main thread before all others */
 675         if( OpenDll( p_dec ) != VLC_SUCCESS )
 676         {
 677             /* Fatal */
 678             p_dec->b_error = true;
 679             return NULL;
 680         }
 681     }
 682 #endif
 683
 684     if( pp_block == NULL || *pp_block == NULL ) return NULL;
 685     p_block = *pp_block;
 686
 687     if( p_sys->dll )
 688         i_result = p_sys->raDecode( 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     else
 692         i_result = p_sys->wraDecode( p_sys->context, (char *)p_block->p_buffer,
 693                                      (unsigned long)p_block->i_buffer,
 694                                      p_sys->p_out, &p_sys->i_out, -1 );
 695
 696 #if 0
 697     msg_Err( p_dec, "decoded: %i samples (%i)",
 698              p_sys->i_out * 8 / p_dec->fmt_out.audio.i_bitspersample /
 699              p_dec->fmt_out.audio.i_channels, i_result );
 700 #endif
 701
 702     /* Date management */
 703     if( p_block->i_pts > 0 &&
 704         p_block->i_pts != date_Get( &p_sys->end_date ) )
 705     {
 706         date_Set( &p_sys->end_date, p_block->i_pts );
 707     }
 708
 709     if( !date_Get( &p_sys->end_date ) )
 710     {
 711         /* We've just started the stream, wait for the first PTS. */
 712         if( p_block ) block_Release( p_block );
 713         return NULL;
 714     }
 715
 716     i_samples = p_sys->i_out * 8 /
 717         p_dec->fmt_out.audio.i_bitspersample /p_dec->fmt_out.audio.i_channels;
 718
 719     p_aout_buffer =
 720         decoder_NewAudioBuffer( p_dec, i_samples );
 721     if( p_aout_buffer )
 722     {
 723         memcpy( p_aout_buffer->p_buffer, p_sys->p_out, p_sys->i_out );
 724
 725         /* Date management */
 726         p_aout_buffer->start_date = date_Get( &p_sys->end_date );
 727         p_aout_buffer->end_date =
 728             date_Increment( &p_sys->end_date, i_samples );
 729     }
 730
 731     block_Release( p_block );
 732     *pp_block = 0;
 733     return p_aout_buffer;
 734 }