snd_ogg.c

   1 /*
   2         Copyright (C) 2003-2005  Mathieu Olivier
   3
   4         This program is free software; you can redistribute it and/or
   5         modify it under the terms of the GNU General Public License
   6         as published by the Free Software Foundation; either version 2
   7         of the License, or (at your option) any later version.
   8
   9         This program is distributed in the hope that it will be useful,
  10         but WITHOUT ANY WARRANTY; without even the implied warranty of
  11         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13         See the GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to:
  17
  18                 Free Software Foundation, Inc.
  19                 59 Temple Place - Suite 330
  20                 Boston, MA  02111-1307, USA
  21
  22 */
  23
  24
  25 #include "quakedef.h"
  26 #include "snd_main.h"
  27 #include "snd_ogg.h"
  28 #include "snd_wav.h"
  29
  30
  31 /*
  32 =================================================================
  33
  34   Minimal set of definitions from the Ogg Vorbis lib
  35   (C) COPYRIGHT 1994-2001 by the XIPHOPHORUS Company
  36   http://www.xiph.org/
  37
  38   WARNING: for a matter of simplicity, several pointer types are
  39   casted to "void*", and most enumerated values are not included
  40
  41 =================================================================
  42 */
  43
  44 #ifdef _MSC_VER
  45 typedef __int64 ogg_int64_t;
  46 #else
  47 typedef long long ogg_int64_t;
  48 #endif
  49
  50 typedef struct
  51 {
  52         size_t  (*read_func)    (void *ptr, size_t size, size_t nmemb, void *datasource);
  53         int             (*seek_func)    (void *datasource, ogg_int64_t offset, int whence);
  54         int             (*close_func)   (void *datasource);
  55         long    (*tell_func)    (void *datasource);
  56 } ov_callbacks;
  57
  58 typedef struct
  59 {
  60         unsigned char   *data;
  61         int                             storage;
  62         int                             fill;
  63         int                             returned;
  64         int                             unsynced;
  65         int                             headerbytes;
  66         int                             bodybytes;
  67 } ogg_sync_state;
  68
  69 typedef struct
  70 {
  71         int             version;
  72         int             channels;
  73         long    rate;
  74         long    bitrate_upper;
  75         long    bitrate_nominal;
  76         long    bitrate_lower;
  77         long    bitrate_window;
  78         void    *codec_setup;
  79 } vorbis_info;
  80
  81 typedef struct
  82 {
  83         unsigned char   *body_data;
  84         long                    body_storage;
  85         long                    body_fill;
  86         long                    body_returned;
  87         int                             *lacing_vals;
  88         ogg_int64_t             *granule_vals;
  89         long                    lacing_storage;
  90         long                    lacing_fill;
  91         long                    lacing_packet;
  92         long                    lacing_returned;
  93         unsigned char   header[282];
  94         int                             header_fill;
  95         int                             e_o_s;
  96         int                             b_o_s;
  97         long                    serialno;
  98         long                    pageno;
  99         ogg_int64_t             packetno;
 100         ogg_int64_t             granulepos;
 101 } ogg_stream_state;
 102
 103 typedef struct
 104 {
 105         int                     analysisp;
 106         vorbis_info     *vi;
 107         float           **pcm;
 108         float           **pcmret;
 109         int                     pcm_storage;
 110         int                     pcm_current;
 111         int                     pcm_returned;
 112         int                     preextrapolate;
 113         int                     eofflag;
 114         long            lW;
 115         long            W;
 116         long            nW;
 117         long            centerW;
 118         ogg_int64_t     granulepos;
 119         ogg_int64_t     sequence;
 120         ogg_int64_t     glue_bits;
 121         ogg_int64_t     time_bits;
 122         ogg_int64_t     floor_bits;
 123         ogg_int64_t     res_bits;
 124         void            *backend_state;
 125 } vorbis_dsp_state;
 126
 127 typedef struct
 128 {
 129         long                    endbyte;
 130         int                             endbit;
 131         unsigned char   *buffer;
 132         unsigned char   *ptr;
 133         long                    storage;
 134 } oggpack_buffer;
 135
 136 typedef struct
 137 {
 138         float                           **pcm;
 139         oggpack_buffer          opb;
 140         long                            lW;
 141         long                            W;
 142         long                            nW;
 143         int                                     pcmend;
 144         int                                     mode;
 145         int                                     eofflag;
 146         ogg_int64_t                     granulepos;
 147         ogg_int64_t                     sequence;
 148         vorbis_dsp_state        *vd;
 149         void                            *localstore;
 150         long                            localtop;
 151         long                            localalloc;
 152         long                            totaluse;
 153         void                            *reap;  // VOIDED POINTER
 154         long                            glue_bits;
 155         long                            time_bits;
 156         long                            floor_bits;
 157         long                            res_bits;
 158         void                            *internal;
 159 } vorbis_block;
 160
 161 typedef struct
 162 {
 163         char **user_comments;
 164         int   *comment_lengths;
 165         int    comments;
 166         char  *vendor;
 167 } vorbis_comment;
 168
 169 typedef struct
 170 {
 171         void                            *datasource;
 172         int                                     seekable;
 173         ogg_int64_t                     offset;
 174         ogg_int64_t                     end;
 175         ogg_sync_state          oy;
 176         int                                     links;
 177         ogg_int64_t                     *offsets;
 178         ogg_int64_t                     *dataoffsets;
 179         long                            *serialnos;
 180         ogg_int64_t                     *pcmlengths;
 181         vorbis_info                     *vi;
 182         vorbis_comment          *vc;
 183         ogg_int64_t                     pcm_offset;
 184         int                                     ready_state;
 185         long                            current_serialno;
 186         int                                     current_link;
 187         double                          bittrack;
 188         double                          samptrack;
 189         ogg_stream_state        os;
 190         vorbis_dsp_state        vd;
 191         vorbis_block            vb;
 192         ov_callbacks            callbacks;
 193 } OggVorbis_File;
 194
 195
 196 /*
 197 =================================================================
 198
 199   DarkPlaces definitions
 200
 201 =================================================================
 202 */
 203
 204 // Functions exported from the vorbisfile library
 205 static int (*qov_clear) (OggVorbis_File *vf);
 206 static vorbis_info* (*qov_info) (OggVorbis_File *vf,int link);
 207 static vorbis_comment* (*qov_comment) (OggVorbis_File *vf,int link);
 208 static char * (*qvorbis_comment_query) (vorbis_comment *vc, char *tag, int count);
 209 static int (*qov_open_callbacks) (void *datasource, OggVorbis_File *vf,
 210                                                                   char *initial, long ibytes,
 211                                                                   ov_callbacks callbacks);
 212 static int (*qov_pcm_seek) (OggVorbis_File *vf,ogg_int64_t pos);
 213 static ogg_int64_t (*qov_pcm_total) (OggVorbis_File *vf,int i);
 214 static long (*qov_read) (OggVorbis_File *vf,char *buffer,int length,
 215                                                  int bigendianp,int word,int sgned,int *bitstream);
 216
 217 static dllfunction_t oggvorbisfuncs[] =
 218 {
 219         {"ov_clear",                            (void **) &qov_clear},
 220         {"ov_info",                                     (void **) &qov_info},
 221         {"ov_comment",                          (void **) &qov_comment},
 222         {"vorbis_comment_query",        (void **) &qvorbis_comment_query},
 223         {"ov_open_callbacks",           (void **) &qov_open_callbacks},
 224         {"ov_pcm_seek",                         (void **) &qov_pcm_seek},
 225         {"ov_pcm_total",                        (void **) &qov_pcm_total},
 226         {"ov_read",                                     (void **) &qov_read},
 227         {NULL, NULL}
 228 };
 229
 230 // Handles for the Vorbis and Vorbisfile DLLs
 231 static dllhandle_t vo_dll = NULL;
 232 static dllhandle_t vf_dll = NULL;
 233
 234 typedef struct
 235 {
 236         unsigned char *buffer;
 237         ogg_int64_t ind, buffsize;
 238 } ov_decode_t;
 239
 240
 241 static size_t ovcb_read (void *ptr, size_t size, size_t nb, void *datasource)
 242 {
 243         ov_decode_t *ov_decode = (ov_decode_t*)datasource;
 244         size_t remain, len;
 245
 246         remain = ov_decode->buffsize - ov_decode->ind;
 247         len = size * nb;
 248         if (remain < len)
 249                 len = remain - remain % size;
 250
 251         memcpy (ptr, ov_decode->buffer + ov_decode->ind, len);
 252         ov_decode->ind += len;
 253
 254         return len / size;
 255 }
 256
 257 static int ovcb_seek (void *datasource, ogg_int64_t offset, int whence)
 258 {
 259         ov_decode_t *ov_decode = (ov_decode_t*)datasource;
 260
 261         switch (whence)
 262         {
 263                 case SEEK_SET:
 264                         break;
 265                 case SEEK_CUR:
 266                         offset += ov_decode->ind;
 267                         break;
 268                 case SEEK_END:
 269                         offset += ov_decode->buffsize;
 270                         break;
 271                 default:
 272                         return -1;
 273         }
 274         if (offset < 0 || offset > ov_decode->buffsize)
 275                 return -1;
 276
 277         ov_decode->ind = offset;
 278         return 0;
 279 }
 280
 281 static int ovcb_close (void *ov_decode)
 282 {
 283         return 0;
 284 }
 285
 286 static long ovcb_tell (void *ov_decode)
 287 {
 288         return ((ov_decode_t*)ov_decode)->ind;
 289 }
 290
 291
 292 /*
 293 =================================================================
 294
 295   DLL load & unload
 296
 297 =================================================================
 298 */
 299
 300 /*
 301 ====================
 302 OGG_OpenLibrary
 303
 304 Try to load the VorbisFile DLL
 305 ====================
 306 */
 307 qboolean OGG_OpenLibrary (void)
 308 {
 309         const char* dllnames_vo [] =
 310         {
 311 #if defined(WIN64)
 312                 "libvorbis64.dll",
 313 #elif defined(WIN32)
 314                 "libvorbis.dll",
 315                 "vorbis.dll",
 316 #elif defined(MACOSX)
 317                 "libvorbis.dylib",
 318 #else
 319                 "libvorbis.so.0",
 320                 "libvorbis.so",
 321 #endif
 322                 NULL
 323         };
 324         const char* dllnames_vf [] =
 325         {
 326 #if defined(WIN64)
 327                 "libvorbisfile64.dll",
 328 #elif defined(WIN32)
 329                 "libvorbisfile.dll",
 330                 "vorbisfile.dll",
 331 #elif defined(MACOSX)
 332                 "libvorbisfile.dylib",
 333 #else
 334                 "libvorbisfile.so.3",
 335                 "libvorbisfile.so",
 336 #endif
 337                 NULL
 338         };
 339
 340         // Already loaded?
 341         if (vf_dll)
 342                 return true;
 343
 344 // COMMANDLINEOPTION: Sound: -novorbis disables ogg vorbis sound support
 345         if (COM_CheckParm("-novorbis"))
 346                 return false;
 347
 348         // Load the DLLs
 349         // We need to load both by hand because some OSes seem to not load
 350         // the vorbis DLL automatically when loading the VorbisFile DLL
 351         if (! Sys_LoadLibrary (dllnames_vo, &vo_dll, NULL) ||
 352                 ! Sys_LoadLibrary (dllnames_vf, &vf_dll, oggvorbisfuncs))
 353         {
 354                 Sys_UnloadLibrary (&vo_dll);
 355                 Con_Printf ("Ogg Vorbis support disabled\n");
 356                 return false;
 357         }
 358
 359         Con_Printf ("Ogg Vorbis support enabled\n");
 360         return true;
 361 }
 362
 363
 364 /*
 365 ====================
 366 OGG_CloseLibrary
 367
 368 Unload the VorbisFile DLL
 369 ====================
 370 */
 371 void OGG_CloseLibrary (void)
 372 {
 373         Sys_UnloadLibrary (&vf_dll);
 374         Sys_UnloadLibrary (&vo_dll);
 375 }
 376
 377
 378 /*
 379 =================================================================
 380
 381         Ogg Vorbis decoding
 382
 383 =================================================================
 384 */
 385
 386 #define STREAM_BUFFER_DURATION 1.5f     // 1.5 sec
 387 #define STREAM_BUFFER_SIZE(format_ptr) ((int)(ceil (STREAM_BUFFER_DURATION * ((format_ptr)->speed * (format_ptr)->width * (format_ptr)->channels))))
 388
 389 // We work with 1 sec sequences, so this buffer must be able to contain
 390 // 1 sec of sound of the highest quality (48 KHz, 16 bit samples, stereo)
 391 static unsigned char resampling_buffer [48000 * 2 * 2];
 392
 393
 394 // Per-sfx data structure
 395 typedef struct
 396 {
 397         unsigned char   *file;
 398         size_t                  filesize;
 399         snd_format_t    format;
 400 } ogg_stream_persfx_t;
 401
 402 // Per-channel data structure
 403 typedef struct
 404 {
 405         OggVorbis_File  vf;
 406         ov_decode_t             ov_decode;
 407         unsigned int    sb_offset;
 408         int                             bs;
 409         snd_buffer_t    sb;             // must be at the end due to its dynamically allocated size
 410 } ogg_stream_perchannel_t;
 411
 412
 413 static const ov_callbacks callbacks = {ovcb_read, ovcb_seek, ovcb_close, ovcb_tell};
 414
 415 /*
 416 ====================
 417 OGG_FetchSound
 418 ====================
 419 */
 420 static const snd_buffer_t* OGG_FetchSound (channel_t* ch, unsigned int* start, unsigned int nbsampleframes)
 421 {
 422         ogg_stream_perchannel_t* per_ch;
 423         sfx_t* sfx;
 424         ogg_stream_persfx_t* per_sfx;
 425         snd_buffer_t* sb;
 426         int newlength, done, ret, bigendian;
 427         unsigned int real_start;
 428         unsigned int factor;
 429
 430         per_ch = (ogg_stream_perchannel_t *)ch->fetcher_data;
 431         sfx = ch->sfx;
 432         per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 433
 434         // If there's no fetcher structure attached to the channel yet
 435         if (per_ch == NULL)
 436         {
 437                 size_t buff_len, memsize;
 438                 snd_format_t sb_format;
 439
 440                 sb_format.speed = snd_renderbuffer->format.speed;
 441                 sb_format.width = per_sfx->format.width;
 442                 sb_format.channels = per_sfx->format.channels;
 443
 444                 buff_len = STREAM_BUFFER_SIZE(&sb_format);
 445                 memsize = sizeof (*per_ch) - sizeof (per_ch->sb.samples) + buff_len;
 446                 per_ch = (ogg_stream_perchannel_t *)Mem_Alloc (snd_mempool, memsize);
 447                 sfx->memsize += memsize;
 448
 449                 // Open it with the VorbisFile API
 450                 per_ch->ov_decode.buffer = per_sfx->file;
 451                 per_ch->ov_decode.ind = 0;
 452                 per_ch->ov_decode.buffsize = per_sfx->filesize;
 453                 if (qov_open_callbacks (&per_ch->ov_decode, &per_ch->vf, NULL, 0, callbacks) < 0)
 454                 {
 455                         Con_Printf("error while reading Ogg Vorbis stream \"%s\"\n", sfx->name);
 456                         Mem_Free (per_ch);
 457                         return NULL;
 458                 }
 459                 per_ch->bs = 0;
 460
 461                 per_ch->sb_offset = 0;
 462                 per_ch->sb.format = sb_format;
 463                 per_ch->sb.nbframes = 0;
 464                 per_ch->sb.maxframes = buff_len / (per_ch->sb.format.channels * per_ch->sb.format.width);
 465
 466                 ch->fetcher_data = per_ch;
 467         }
 468
 469         real_start = *start;
 470
 471         sb = &per_ch->sb;
 472         factor = per_sfx->format.width * per_sfx->format.channels;
 473
 474         // If the stream buffer can't contain that much samples anyway
 475         if (nbsampleframes > sb->maxframes)
 476         {
 477                 Con_Printf ("OGG_FetchSound: stream buffer too small (%u sample frames required)\n", nbsampleframes);
 478                 return NULL;
 479         }
 480
 481         // If the data we need has already been decompressed in the sfxbuffer, just return it
 482         if (per_ch->sb_offset <= real_start && per_ch->sb_offset + sb->nbframes >= real_start + nbsampleframes)
 483         {
 484                 *start = per_ch->sb_offset;
 485                 return sb;
 486         }
 487
 488         newlength = (int)(per_ch->sb_offset + sb->nbframes) - real_start;
 489
 490         // If we need to skip some data before decompressing the rest, or if the stream has looped
 491         if (newlength < 0 || per_ch->sb_offset > real_start)
 492         {
 493                 unsigned int time_start;
 494                 ogg_int64_t ogg_start;
 495                 int err;
 496
 497                 if (real_start > (unsigned int)sfx->total_length)
 498                 {
 499                         Con_Printf ("OGG_FetchSound: asked for a start position after the end of the sfx! (%u > %u)\n",
 500                                                 real_start, sfx->total_length);
 501                         return NULL;
 502                 }
 503
 504                 // We work with 200ms (1/5 sec) steps to avoid rounding errors
 505                 time_start = real_start * 5 / snd_renderbuffer->format.speed;
 506                 ogg_start = time_start * (per_sfx->format.speed / 5);
 507                 err = qov_pcm_seek (&per_ch->vf, ogg_start);
 508                 if (err != 0)
 509                 {
 510                         Con_Printf ("OGG_FetchSound: qov_pcm_seek(..., %d) returned %d\n",
 511                                                 real_start, err);
 512                         return NULL;
 513                 }
 514                 sb->nbframes = 0;
 515
 516                 real_start = (float)ogg_start / per_sfx->format.speed * snd_renderbuffer->format.speed;
 517                 if (*start - real_start + nbsampleframes > sb->maxframes)
 518                 {
 519                         Con_Printf ("OGG_FetchSound: stream buffer too small after seek (%u sample frames required)\n",
 520                                                 *start - real_start + nbsampleframes);
 521                         per_ch->sb_offset = real_start;
 522                         return NULL;
 523                 }
 524         }
 525         // Else, move forward the samples we need to keep in the sound buffer
 526         else
 527         {
 528                 memmove (sb->samples, sb->samples + (real_start - per_ch->sb_offset) * factor, newlength * factor);
 529                 sb->nbframes = newlength;
 530         }
 531
 532         per_ch->sb_offset = real_start;
 533
 534         // We add exactly 1 sec of sound to the buffer:
 535         // 1- to ensure we won't lose any sample during the resampling process
 536         // 2- to force one call to OGG_FetchSound per second to regulate the workload
 537         if (sb->format.speed + sb->nbframes > sb->maxframes)
 538         {
 539                 Con_Printf ("OGG_FetchSound: stream buffer overflow (%u sample frames / %u)\n",
 540                                         sb->format.speed + sb->nbframes, sb->maxframes);
 541                 return NULL;
 542         }
 543         newlength = per_sfx->format.speed * factor;  // -> 1 sec of sound before resampling
 544
 545         // Decompress in the resampling_buffer
 546 #if BYTE_ORDER == BIG_ENDIAN
 547         bigendian = 1;
 548 #else
 549         bigendian = 0;
 550 #endif
 551         done = 0;
 552         while ((ret = qov_read (&per_ch->vf, (char *)&resampling_buffer[done], (int)(newlength - done), bigendian, 2, 1, &per_ch->bs)) > 0)
 553                 done += ret;
 554
 555         Snd_AppendToSndBuffer (sb, resampling_buffer, (size_t)done / (size_t)factor, &per_sfx->format);
 556
 557         *start = per_ch->sb_offset;
 558         return sb;
 559 }
 560
 561
 562 /*
 563 ====================
 564 OGG_FetchEnd
 565 ====================
 566 */
 567 static void OGG_FetchEnd (channel_t* ch)
 568 {
 569         ogg_stream_perchannel_t* per_ch;
 570
 571         per_ch = (ogg_stream_perchannel_t *)ch->fetcher_data;
 572         if (per_ch != NULL)
 573         {
 574                 size_t buff_len;
 575
 576                 // Free the ogg vorbis decoder
 577                 qov_clear (&per_ch->vf);
 578
 579                 buff_len = per_ch->sb.maxframes * per_ch->sb.format.channels * per_ch->sb.format.width;
 580                 ch->sfx->memsize -= sizeof (*per_ch) - sizeof (per_ch->sb.samples) + buff_len;
 581
 582                 Mem_Free (per_ch);
 583                 ch->fetcher_data = NULL;
 584         }
 585 }
 586
 587
 588 /*
 589 ====================
 590 OGG_FreeSfx
 591 ====================
 592 */
 593 static void OGG_FreeSfx (sfx_t* sfx)
 594 {
 595         ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 596
 597         // Free the Ogg Vorbis file
 598         Mem_Free(per_sfx->file);
 599         sfx->memsize -= per_sfx->filesize;
 600
 601         // Free the stream structure
 602         Mem_Free(per_sfx);
 603         sfx->memsize -= sizeof (*per_sfx);
 604
 605         sfx->fetcher_data = NULL;
 606         sfx->fetcher = NULL;
 607 }
 608
 609
 610 /*
 611 ====================
 612 OGG_GetFormat
 613 ====================
 614 */
 615 static const snd_format_t* OGG_GetFormat (sfx_t* sfx)
 616 {
 617         ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 618         return &per_sfx->format;
 619 }
 620
 621 static const snd_fetcher_t ogg_fetcher = { OGG_FetchSound, OGG_FetchEnd, OGG_FreeSfx, OGG_GetFormat };
 622
 623
 624 /*
 625 ====================
 626 OGG_LoadVorbisFile
 627
 628 Load an Ogg Vorbis file into memory
 629 ====================
 630 */
 631 qboolean OGG_LoadVorbisFile (const char *filename, sfx_t *sfx)
 632 {
 633         unsigned char *data;
 634         const char *loopcomment;
 635         fs_offset_t filesize;
 636         ov_decode_t ov_decode;
 637         OggVorbis_File vf;
 638         vorbis_info *vi;
 639         vorbis_comment *vc;
 640         ogg_int64_t len, buff_len;
 641
 642         if (!vf_dll)
 643                 return false;
 644
 645         // Already loaded?
 646         if (sfx->fetcher != NULL)
 647                 return true;
 648
 649         // Load the file
 650         data = FS_LoadFile (filename, snd_mempool, false, &filesize);
 651         if (data == NULL)
 652                 return false;
 653
 654         Con_DPrintf ("Loading Ogg Vorbis file \"%s\"\n", filename);
 655
 656         // Open it with the VorbisFile API
 657         ov_decode.buffer = data;
 658         ov_decode.ind = 0;
 659         ov_decode.buffsize = filesize;
 660         if (qov_open_callbacks (&ov_decode, &vf, NULL, 0, callbacks) < 0)
 661         {
 662                 Con_Printf ("error while opening Ogg Vorbis file \"%s\"\n", filename);
 663                 Mem_Free(data);
 664                 return false;
 665         }
 666
 667         // Get the stream information
 668         vi = qov_info (&vf, -1);
 669         if (vi->channels < 1 || vi->channels > 2)
 670         {
 671                 Con_Printf("%s has an unsupported number of channels (%i)\n",
 672                                         sfx->name, vi->channels);
 673                 qov_clear (&vf);
 674                 Mem_Free(data);
 675                 return false;
 676         }
 677
 678         len = qov_pcm_total (&vf, -1) * vi->channels * 2;  // 16 bits => "* 2"
 679
 680         // Decide if we go for a stream or a simple PCM cache
 681         buff_len = (int)ceil (STREAM_BUFFER_DURATION * (snd_renderbuffer->format.speed * 2 * vi->channels));
 682         if (snd_streaming.integer && len > (ogg_int64_t)filesize + 3 * buff_len)
 683         {
 684                 ogg_stream_persfx_t* per_sfx;
 685
 686                 Con_DPrintf ("\"%s\" will be streamed\n", filename);
 687                 per_sfx = (ogg_stream_persfx_t *)Mem_Alloc (snd_mempool, sizeof (*per_sfx));
 688                 sfx->memsize += sizeof (*per_sfx);
 689                 per_sfx->file = data;
 690                 per_sfx->filesize = filesize;
 691                 sfx->memsize += filesize;
 692
 693                 per_sfx->format.speed = vi->rate;
 694                 per_sfx->format.width = 2;  // We always work with 16 bits samples
 695                 per_sfx->format.channels = vi->channels;
 696
 697                 sfx->fetcher_data = per_sfx;
 698                 sfx->fetcher = &ogg_fetcher;
 699                 sfx->flags |= SFXFLAG_STREAMED;
 700                 sfx->total_length = (int)((size_t)len / (per_sfx->format.channels * 2) * ((double)snd_renderbuffer->format.speed / per_sfx->format.speed));
 701                 sfx->loopstart = sfx->total_length;
 702                 vc = qov_comment(&vf, -1);
 703                 if(vc)
 704                 {
 705                         loopcomment = qvorbis_comment_query(vc, "LOOP_START", 0);
 706                         if(loopcomment)
 707                                 sfx->loopstart = bound(0, (unsigned int) (atof(loopcomment) * (double)snd_renderbuffer->format.speed / (double)per_sfx->format.speed), sfx->total_length);
 708                 }
 709         }
 710         else
 711         {
 712                 char *buff;
 713                 ogg_int64_t done;
 714                 int bs, bigendian;
 715                 long ret;
 716                 snd_buffer_t *sb;
 717                 snd_format_t ogg_format;
 718
 719                 Con_DPrintf ("\"%s\" will be cached\n", filename);
 720
 721                 // Decode it
 722                 buff = (char *)Mem_Alloc (snd_mempool, (int)len);
 723                 done = 0;
 724                 bs = 0;
 725 #if BYTE_ORDER == BIG_ENDIAN
 726                 bigendian = 1;
 727 #else
 728                 bigendian = 0;
 729 #endif
 730                 while ((ret = qov_read (&vf, &buff[done], (int)(len - done), bigendian, 2, 1, &bs)) > 0)
 731                         done += ret;
 732
 733                 // Build the sound buffer
 734                 ogg_format.speed = vi->rate;
 735                 ogg_format.channels = vi->channels;
 736                 ogg_format.width = 2;  // We always work with 16 bits samples
 737                 sb = Snd_CreateSndBuffer ((unsigned char *)buff, (size_t)done / (vi->channels * 2), &ogg_format, snd_renderbuffer->format.speed);
 738                 if (sb == NULL)
 739                 {
 740                         qov_clear (&vf);
 741                         Mem_Free (data);
 742                         Mem_Free (buff);
 743                         return false;
 744                 }
 745
 746                 sfx->fetcher = &wav_fetcher;
 747                 sfx->fetcher_data = sb;
 748
 749                 sfx->total_length = sb->nbframes;
 750                 sfx->memsize += sb->maxframes * sb->format.channels * sb->format.width + sizeof (*sb) - sizeof (sb->samples);
 751
 752                 sfx->loopstart = sfx->total_length;
 753                 sfx->flags &= ~SFXFLAG_STREAMED;
 754                 vc = qov_comment(&vf, -1);
 755                 if(vc)
 756                 {
 757                         loopcomment = qvorbis_comment_query(vc, "LOOP_START", 0);
 758                         if(loopcomment)
 759                                 sfx->loopstart = bound(0, (unsigned int) (atoi(loopcomment) * (double)snd_renderbuffer->format.speed / (double)sb->format.speed), sfx->total_length);
 760                 }
 761
 762                 qov_clear (&vf);
 763                 Mem_Free (data);
 764                 Mem_Free (buff);
 765         }
 766
 767         return true;
 768 }