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 vorbisfilefuncs[] =
 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 static dllfunction_t vorbisfuncs[] =
 231 {
 232         {"vorbis_comment_query",        (void **) &qvorbis_comment_query},
 233         {NULL, NULL}
 234 };
 235
 236 // Handles for the Vorbis and Vorbisfile DLLs
 237 static dllhandle_t vo_dll = NULL;
 238 static dllhandle_t vf_dll = NULL;
 239
 240 typedef struct
 241 {
 242         unsigned char *buffer;
 243         ogg_int64_t ind, buffsize;
 244 } ov_decode_t;
 245
 246
 247 static size_t ovcb_read (void *ptr, size_t size, size_t nb, void *datasource)
 248 {
 249         ov_decode_t *ov_decode = (ov_decode_t*)datasource;
 250         size_t remain, len;
 251
 252         remain = ov_decode->buffsize - ov_decode->ind;
 253         len = size * nb;
 254         if (remain < len)
 255                 len = remain - remain % size;
 256
 257         memcpy (ptr, ov_decode->buffer + ov_decode->ind, len);
 258         ov_decode->ind += len;
 259
 260         return len / size;
 261 }
 262
 263 static int ovcb_seek (void *datasource, ogg_int64_t offset, int whence)
 264 {
 265         ov_decode_t *ov_decode = (ov_decode_t*)datasource;
 266
 267         switch (whence)
 268         {
 269                 case SEEK_SET:
 270                         break;
 271                 case SEEK_CUR:
 272                         offset += ov_decode->ind;
 273                         break;
 274                 case SEEK_END:
 275                         offset += ov_decode->buffsize;
 276                         break;
 277                 default:
 278                         return -1;
 279         }
 280         if (offset < 0 || offset > ov_decode->buffsize)
 281                 return -1;
 282
 283         ov_decode->ind = offset;
 284         return 0;
 285 }
 286
 287 static int ovcb_close (void *ov_decode)
 288 {
 289         return 0;
 290 }
 291
 292 static long ovcb_tell (void *ov_decode)
 293 {
 294         return ((ov_decode_t*)ov_decode)->ind;
 295 }
 296
 297
 298 /*
 299 =================================================================
 300
 301   DLL load & unload
 302
 303 =================================================================
 304 */
 305
 306 /*
 307 ====================
 308 OGG_OpenLibrary
 309
 310 Try to load the VorbisFile DLL
 311 ====================
 312 */
 313 qboolean OGG_OpenLibrary (void)
 314 {
 315         const char* dllnames_vo [] =
 316         {
 317 #if defined(WIN64)
 318                 "libvorbis64.dll",
 319 #elif defined(WIN32)
 320                 "libvorbis.dll",
 321                 "vorbis.dll",
 322 #elif defined(MACOSX)
 323                 "libvorbis.dylib",
 324 #else
 325                 "libvorbis.so.0",
 326                 "libvorbis.so",
 327 #endif
 328                 NULL
 329         };
 330         const char* dllnames_vf [] =
 331         {
 332 #if defined(WIN64)
 333                 "libvorbisfile64.dll",
 334 #elif defined(WIN32)
 335                 "libvorbisfile.dll",
 336                 "vorbisfile.dll",
 337 #elif defined(MACOSX)
 338                 "libvorbisfile.dylib",
 339 #else
 340                 "libvorbisfile.so.3",
 341                 "libvorbisfile.so",
 342 #endif
 343                 NULL
 344         };
 345
 346         // Already loaded?
 347         if (vf_dll)
 348                 return true;
 349
 350 // COMMANDLINEOPTION: Sound: -novorbis disables ogg vorbis sound support
 351         if (COM_CheckParm("-novorbis"))
 352                 return false;
 353
 354         // Load the DLLs
 355         // We need to load both by hand because some OSes seem to not load
 356         // the vorbis DLL automatically when loading the VorbisFile DLL
 357         if (! Sys_LoadLibrary (dllnames_vo, &vo_dll, vorbisfuncs) ||
 358                 ! Sys_LoadLibrary (dllnames_vf, &vf_dll, vorbisfilefuncs))
 359         {
 360                 Sys_UnloadLibrary (&vo_dll);
 361                 Con_Printf ("Ogg Vorbis support disabled\n");
 362                 return false;
 363         }
 364
 365         Con_Printf ("Ogg Vorbis support enabled\n");
 366         return true;
 367 }
 368
 369
 370 /*
 371 ====================
 372 OGG_CloseLibrary
 373
 374 Unload the VorbisFile DLL
 375 ====================
 376 */
 377 void OGG_CloseLibrary (void)
 378 {
 379         Sys_UnloadLibrary (&vf_dll);
 380         Sys_UnloadLibrary (&vo_dll);
 381 }
 382
 383
 384 /*
 385 =================================================================
 386
 387         Ogg Vorbis decoding
 388
 389 =================================================================
 390 */
 391
 392 #define STREAM_BUFFER_DURATION 1.5f     // 1.5 sec
 393 #define STREAM_BUFFER_SIZE(format_ptr) ((int)(ceil (STREAM_BUFFER_DURATION * ((format_ptr)->speed * (format_ptr)->width * (format_ptr)->channels))))
 394
 395 // We work with 1 sec sequences, so this buffer must be able to contain
 396 // 1 sec of sound of the highest quality (48 KHz, 16 bit samples, stereo)
 397 static unsigned char resampling_buffer [48000 * 2 * 2];
 398
 399
 400 // Per-sfx data structure
 401 typedef struct
 402 {
 403         unsigned char   *file;
 404         size_t                  filesize;
 405         snd_format_t    format;
 406 } ogg_stream_persfx_t;
 407
 408 // Per-channel data structure
 409 typedef struct
 410 {
 411         OggVorbis_File  vf;
 412         ov_decode_t             ov_decode;
 413         unsigned int    sb_offset;
 414         int                             bs;
 415         snd_buffer_t    sb;             // must be at the end due to its dynamically allocated size
 416 } ogg_stream_perchannel_t;
 417
 418
 419 static const ov_callbacks callbacks = {ovcb_read, ovcb_seek, ovcb_close, ovcb_tell};
 420
 421 /*
 422 ====================
 423 OGG_FetchSound
 424 ====================
 425 */
 426 static const snd_buffer_t* OGG_FetchSound (channel_t* ch, unsigned int* start, unsigned int nbsampleframes)
 427 {
 428         ogg_stream_perchannel_t* per_ch;
 429         sfx_t* sfx;
 430         ogg_stream_persfx_t* per_sfx;
 431         snd_buffer_t* sb;
 432         int newlength, done, ret, bigendian;
 433         unsigned int real_start;
 434         unsigned int factor;
 435
 436         per_ch = (ogg_stream_perchannel_t *)ch->fetcher_data;
 437         sfx = ch->sfx;
 438         per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 439
 440         // If there's no fetcher structure attached to the channel yet
 441         if (per_ch == NULL)
 442         {
 443                 size_t buff_len, memsize;
 444                 snd_format_t sb_format;
 445
 446                 sb_format.speed = snd_renderbuffer->format.speed;
 447                 sb_format.width = per_sfx->format.width;
 448                 sb_format.channels = per_sfx->format.channels;
 449
 450                 buff_len = STREAM_BUFFER_SIZE(&sb_format);
 451                 memsize = sizeof (*per_ch) - sizeof (per_ch->sb.samples) + buff_len;
 452                 per_ch = (ogg_stream_perchannel_t *)Mem_Alloc (snd_mempool, memsize);
 453                 sfx->memsize += memsize;
 454
 455                 // Open it with the VorbisFile API
 456                 per_ch->ov_decode.buffer = per_sfx->file;
 457                 per_ch->ov_decode.ind = 0;
 458                 per_ch->ov_decode.buffsize = per_sfx->filesize;
 459                 if (qov_open_callbacks (&per_ch->ov_decode, &per_ch->vf, NULL, 0, callbacks) < 0)
 460                 {
 461                         Con_Printf("error while reading Ogg Vorbis stream \"%s\"\n", sfx->name);
 462                         Mem_Free (per_ch);
 463                         return NULL;
 464                 }
 465                 per_ch->bs = 0;
 466
 467                 per_ch->sb_offset = 0;
 468                 per_ch->sb.format = sb_format;
 469                 per_ch->sb.nbframes = 0;
 470                 per_ch->sb.maxframes = buff_len / (per_ch->sb.format.channels * per_ch->sb.format.width);
 471
 472                 ch->fetcher_data = per_ch;
 473         }
 474
 475         real_start = *start;
 476
 477         sb = &per_ch->sb;
 478         factor = per_sfx->format.width * per_sfx->format.channels;
 479
 480         // If the stream buffer can't contain that much samples anyway
 481         if (nbsampleframes > sb->maxframes)
 482         {
 483                 Con_Printf ("OGG_FetchSound: stream buffer too small (%u sample frames required)\n", nbsampleframes);
 484                 return NULL;
 485         }
 486
 487         // If the data we need has already been decompressed in the sfxbuffer, just return it
 488         if (per_ch->sb_offset <= real_start && per_ch->sb_offset + sb->nbframes >= real_start + nbsampleframes)
 489         {
 490                 *start = per_ch->sb_offset;
 491                 return sb;
 492         }
 493
 494         newlength = (int)(per_ch->sb_offset + sb->nbframes) - real_start;
 495
 496         // If we need to skip some data before decompressing the rest, or if the stream has looped
 497         if (newlength < 0 || per_ch->sb_offset > real_start)
 498         {
 499                 unsigned int time_start;
 500                 ogg_int64_t ogg_start;
 501                 int err;
 502
 503                 if (real_start > (unsigned int)sfx->total_length)
 504                 {
 505                         Con_Printf ("OGG_FetchSound: asked for a start position after the end of the sfx! (%u > %u)\n",
 506                                                 real_start, sfx->total_length);
 507                         return NULL;
 508                 }
 509
 510                 // We work with 200ms (1/5 sec) steps to avoid rounding errors
 511                 time_start = real_start * 5 / snd_renderbuffer->format.speed;
 512                 ogg_start = time_start * (per_sfx->format.speed / 5);
 513                 err = qov_pcm_seek (&per_ch->vf, ogg_start);
 514                 if (err != 0)
 515                 {
 516                         Con_Printf ("OGG_FetchSound: qov_pcm_seek(..., %d) returned %d\n",
 517                                                 real_start, err);
 518                         return NULL;
 519                 }
 520                 sb->nbframes = 0;
 521
 522                 real_start = (float)ogg_start / per_sfx->format.speed * snd_renderbuffer->format.speed;
 523                 if (*start - real_start + nbsampleframes > sb->maxframes)
 524                 {
 525                         Con_Printf ("OGG_FetchSound: stream buffer too small after seek (%u sample frames required)\n",
 526                                                 *start - real_start + nbsampleframes);
 527                         per_ch->sb_offset = real_start;
 528                         return NULL;
 529                 }
 530         }
 531         // Else, move forward the samples we need to keep in the sound buffer
 532         else
 533         {
 534                 memmove (sb->samples, sb->samples + (real_start - per_ch->sb_offset) * factor, newlength * factor);
 535                 sb->nbframes = newlength;
 536         }
 537
 538         per_ch->sb_offset = real_start;
 539
 540         // We add exactly 1 sec of sound to the buffer:
 541         // 1- to ensure we won't lose any sample during the resampling process
 542         // 2- to force one call to OGG_FetchSound per second to regulate the workload
 543         if (sb->format.speed + sb->nbframes > sb->maxframes)
 544         {
 545                 Con_Printf ("OGG_FetchSound: stream buffer overflow (%u sample frames / %u)\n",
 546                                         sb->format.speed + sb->nbframes, sb->maxframes);
 547                 return NULL;
 548         }
 549         newlength = per_sfx->format.speed * factor;  // -> 1 sec of sound before resampling
 550
 551         // Decompress in the resampling_buffer
 552 #if BYTE_ORDER == BIG_ENDIAN
 553         bigendian = 1;
 554 #else
 555         bigendian = 0;
 556 #endif
 557         done = 0;
 558         while ((ret = qov_read (&per_ch->vf, (char *)&resampling_buffer[done], (int)(newlength - done), bigendian, 2, 1, &per_ch->bs)) > 0)
 559                 done += ret;
 560
 561         Snd_AppendToSndBuffer (sb, resampling_buffer, (size_t)done / (size_t)factor, &per_sfx->format);
 562
 563         *start = per_ch->sb_offset;
 564         return sb;
 565 }
 566
 567
 568 /*
 569 ====================
 570 OGG_FetchEnd
 571 ====================
 572 */
 573 static void OGG_FetchEnd (channel_t* ch)
 574 {
 575         ogg_stream_perchannel_t* per_ch;
 576
 577         per_ch = (ogg_stream_perchannel_t *)ch->fetcher_data;
 578         if (per_ch != NULL)
 579         {
 580                 size_t buff_len;
 581
 582                 // Free the ogg vorbis decoder
 583                 qov_clear (&per_ch->vf);
 584
 585                 buff_len = per_ch->sb.maxframes * per_ch->sb.format.channels * per_ch->sb.format.width;
 586                 ch->sfx->memsize -= sizeof (*per_ch) - sizeof (per_ch->sb.samples) + buff_len;
 587
 588                 Mem_Free (per_ch);
 589                 ch->fetcher_data = NULL;
 590         }
 591 }
 592
 593
 594 /*
 595 ====================
 596 OGG_FreeSfx
 597 ====================
 598 */
 599 static void OGG_FreeSfx (sfx_t* sfx)
 600 {
 601         ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 602
 603         // Free the Ogg Vorbis file
 604         Mem_Free(per_sfx->file);
 605         sfx->memsize -= per_sfx->filesize;
 606
 607         // Free the stream structure
 608         Mem_Free(per_sfx);
 609         sfx->memsize -= sizeof (*per_sfx);
 610
 611         sfx->fetcher_data = NULL;
 612         sfx->fetcher = NULL;
 613 }
 614
 615
 616 /*
 617 ====================
 618 OGG_GetFormat
 619 ====================
 620 */
 621 static const snd_format_t* OGG_GetFormat (sfx_t* sfx)
 622 {
 623         ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
 624         return &per_sfx->format;
 625 }
 626
 627 static const snd_fetcher_t ogg_fetcher = { OGG_FetchSound, OGG_FetchEnd, OGG_FreeSfx, OGG_GetFormat };
 628
 629
 630 /*
 631 ====================
 632 OGG_LoadVorbisFile
 633
 634 Load an Ogg Vorbis file into memory
 635 ====================
 636 */
 637 qboolean OGG_LoadVorbisFile (const char *filename, sfx_t *sfx)
 638 {
 639         unsigned char *data;
 640         const char *loopcomment;
 641         fs_offset_t filesize;
 642         ov_decode_t ov_decode;
 643         OggVorbis_File vf;
 644         vorbis_info *vi;
 645         vorbis_comment *vc;
 646         ogg_int64_t len, buff_len;
 647
 648         if (!vf_dll)
 649                 return false;
 650
 651         // Already loaded?
 652         if (sfx->fetcher != NULL)
 653                 return true;
 654
 655         // Load the file
 656         data = FS_LoadFile (filename, snd_mempool, false, &filesize);
 657         if (data == NULL)
 658                 return false;
 659
 660         Con_DPrintf ("Loading Ogg Vorbis file \"%s\"\n", filename);
 661
 662         // Open it with the VorbisFile API
 663         ov_decode.buffer = data;
 664         ov_decode.ind = 0;
 665         ov_decode.buffsize = filesize;
 666         if (qov_open_callbacks (&ov_decode, &vf, NULL, 0, callbacks) < 0)
 667         {
 668                 Con_Printf ("error while opening Ogg Vorbis file \"%s\"\n", filename);
 669                 Mem_Free(data);
 670                 return false;
 671         }
 672
 673         // Get the stream information
 674         vi = qov_info (&vf, -1);
 675         if (vi->channels < 1 || vi->channels > 2)
 676         {
 677                 Con_Printf("%s has an unsupported number of channels (%i)\n",
 678                                         sfx->name, vi->channels);
 679                 qov_clear (&vf);
 680                 Mem_Free(data);
 681                 return false;
 682         }
 683
 684         len = qov_pcm_total (&vf, -1) * vi->channels * 2;  // 16 bits => "* 2"
 685
 686         // Decide if we go for a stream or a simple PCM cache
 687         buff_len = (int)ceil (STREAM_BUFFER_DURATION * (snd_renderbuffer->format.speed * 2 * vi->channels));
 688         if (snd_streaming.integer && len > (ogg_int64_t)filesize + 3 * buff_len)
 689         {
 690                 ogg_stream_persfx_t* per_sfx;
 691
 692                 Con_DPrintf ("\"%s\" will be streamed\n", filename);
 693                 per_sfx = (ogg_stream_persfx_t *)Mem_Alloc (snd_mempool, sizeof (*per_sfx));
 694                 sfx->memsize += sizeof (*per_sfx);
 695                 per_sfx->file = data;
 696                 per_sfx->filesize = filesize;
 697                 sfx->memsize += filesize;
 698
 699                 per_sfx->format.speed = vi->rate;
 700                 per_sfx->format.width = 2;  // We always work with 16 bits samples
 701                 per_sfx->format.channels = vi->channels;
 702
 703                 sfx->fetcher_data = per_sfx;
 704                 sfx->fetcher = &ogg_fetcher;
 705                 sfx->flags |= SFXFLAG_STREAMED;
 706                 sfx->total_length = (int)((size_t)len / (per_sfx->format.channels * 2) * ((double)snd_renderbuffer->format.speed / per_sfx->format.speed));
 707                 sfx->loopstart = sfx->total_length;
 708                 vc = qov_comment(&vf, -1);
 709                 if(vc)
 710                 {
 711                         loopcomment = qvorbis_comment_query(vc, "LOOP_START", 0);
 712                         if(loopcomment)
 713                                 sfx->loopstart = bound(0, (unsigned int) (atof(loopcomment) * (double)snd_renderbuffer->format.speed / (double)per_sfx->format.speed), sfx->total_length);
 714                 }
 715         }
 716         else
 717         {
 718                 char *buff;
 719                 ogg_int64_t done;
 720                 int bs, bigendian;
 721                 long ret;
 722                 snd_buffer_t *sb;
 723                 snd_format_t ogg_format;
 724
 725                 Con_DPrintf ("\"%s\" will be cached\n", filename);
 726
 727                 // Decode it
 728                 buff = (char *)Mem_Alloc (snd_mempool, (int)len);
 729                 done = 0;
 730                 bs = 0;
 731 #if BYTE_ORDER == BIG_ENDIAN
 732                 bigendian = 1;
 733 #else
 734                 bigendian = 0;
 735 #endif
 736                 while ((ret = qov_read (&vf, &buff[done], (int)(len - done), bigendian, 2, 1, &bs)) > 0)
 737                         done += ret;
 738
 739                 // Build the sound buffer
 740                 ogg_format.speed = vi->rate;
 741                 ogg_format.channels = vi->channels;
 742                 ogg_format.width = 2;  // We always work with 16 bits samples
 743                 sb = Snd_CreateSndBuffer ((unsigned char *)buff, (size_t)done / (vi->channels * 2), &ogg_format, snd_renderbuffer->format.speed);
 744                 if (sb == NULL)
 745                 {
 746                         qov_clear (&vf);
 747                         Mem_Free (data);
 748                         Mem_Free (buff);
 749                         return false;
 750                 }
 751
 752                 sfx->fetcher = &wav_fetcher;
 753                 sfx->fetcher_data = sb;
 754
 755                 sfx->total_length = sb->nbframes;
 756                 sfx->memsize += sb->maxframes * sb->format.channels * sb->format.width + sizeof (*sb) - sizeof (sb->samples);
 757
 758                 sfx->loopstart = sfx->total_length;
 759                 sfx->flags &= ~SFXFLAG_STREAMED;
 760                 vc = qov_comment(&vf, -1);
 761                 if(vc)
 762                 {
 763                         loopcomment = qvorbis_comment_query(vc, "LOOP_START", 0);
 764                         if(loopcomment)
 765                                 sfx->loopstart = bound(0, (unsigned int) (atoi(loopcomment) * (double)snd_renderbuffer->format.speed / (double)sb->format.speed), sfx->total_length);
 766                 }
 767
 768                 qov_clear (&vf);
 769                 Mem_Free (data);
 770                 Mem_Free (buff);
 771         }
 772
 773         return true;
 774 }