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 {"ov_open_callbacks", (void **) &qov_open_callbacks},
223 {"ov_pcm_seek", (void **) &qov_pcm_seek},
224 {"ov_pcm_total", (void **) &qov_pcm_total},
225 {"ov_read", (void **) &qov_read},
226 {NULL, NULL}
227 };
228
229 static dllfunction_t vorbisfuncs[] =
230 {
231 {"vorbis_comment_query", (void **) &qvorbis_comment_query},
232 {NULL, NULL}
233 };
234
235 // Handles for the Vorbis and Vorbisfile DLLs
236 static dllhandle_t vo_dll = NULL;
237 static dllhandle_t vf_dll = NULL;
238
239 typedef struct
240 {
241 unsigned char *buffer;
242 ogg_int64_t ind, buffsize;
243 } ov_decode_t;
244
245
ovcb_read(void * ptr,size_t size,size_t nb,void * datasource)246 static size_t ovcb_read (void *ptr, size_t size, size_t nb, void *datasource)
247 {
248 ov_decode_t *ov_decode = (ov_decode_t*)datasource;
249 size_t remain, len;
250
251 remain = ov_decode->buffsize - ov_decode->ind;
252 len = size * nb;
253 if (remain < len)
254 len = remain - remain % size;
255
256 memcpy (ptr, ov_decode->buffer + ov_decode->ind, len);
257 ov_decode->ind += len;
258
259 return len / size;
260 }
261
ovcb_seek(void * datasource,ogg_int64_t offset,int whence)262 static int ovcb_seek (void *datasource, ogg_int64_t offset, int whence)
263 {
264 ov_decode_t *ov_decode = (ov_decode_t*)datasource;
265
266 switch (whence)
267 {
268 case SEEK_SET:
269 break;
270 case SEEK_CUR:
271 offset += ov_decode->ind;
272 break;
273 case SEEK_END:
274 offset += ov_decode->buffsize;
275 break;
276 default:
277 return -1;
278 }
279 if (offset < 0 || offset > ov_decode->buffsize)
280 return -1;
281
282 ov_decode->ind = offset;
283 return 0;
284 }
285
ovcb_close(void * ov_decode)286 static int ovcb_close (void *ov_decode)
287 {
288 return 0;
289 }
290
ovcb_tell(void * ov_decode)291 static long ovcb_tell (void *ov_decode)
292 {
293 return ((ov_decode_t*)ov_decode)->ind;
294 }
295
296
297 /*
298 =================================================================
299
300 DLL load & unload
301
302 =================================================================
303 */
304
305 /*
306 ====================
307 OGG_OpenLibrary
308
309 Try to load the VorbisFile DLL
310 ====================
311 */
OGG_OpenLibrary(void)312 qboolean OGG_OpenLibrary (void)
313 {
314 const char* dllnames_vo [] =
315 {
316 #if defined(WIN64)
317 "libvorbis64.dll",
318 #elif defined(WIN32)
319 "libvorbis.dll",
320 "vorbis.dll",
321 #elif defined(MACOSX)
322 "libvorbis.dylib",
323 #else
324 "libvorbis.so.0",
325 "libvorbis.so",
326 #endif
327 NULL
328 };
329 const char* dllnames_vf [] =
330 {
331 #if defined(WIN64)
332 "libvorbisfile64.dll",
333 #elif defined(WIN32)
334 "libvorbisfile.dll",
335 "vorbisfile.dll",
336 #elif defined(MACOSX)
337 "libvorbisfile.dylib",
338 #else
339 "libvorbisfile.so.3",
340 "libvorbisfile.so",
341 #endif
342 NULL
343 };
344
345 // Already loaded?
346 if (vf_dll)
347 return true;
348
349 // COMMANDLINEOPTION: Sound: -novorbis disables ogg vorbis sound support
350 if (COM_CheckParm("-novorbis"))
351 return false;
352
353 // Load the DLLs
354 // We need to load both by hand because some OSes seem to not load
355 // the vorbis DLL automatically when loading the VorbisFile DLL
356 return Sys_LoadLibrary (dllnames_vo, &vo_dll, vorbisfuncs) && Sys_LoadLibrary (dllnames_vf, &vf_dll, vorbisfilefuncs);
357 }
358
359
360 /*
361 ====================
362 OGG_CloseLibrary
363
364 Unload the VorbisFile DLL
365 ====================
366 */
OGG_CloseLibrary(void)367 void OGG_CloseLibrary (void)
368 {
369 Sys_UnloadLibrary (&vf_dll);
370 Sys_UnloadLibrary (&vo_dll);
371 }
372
373
374 /*
375 =================================================================
376
377 Ogg Vorbis decoding
378
379 =================================================================
380 */
381
382 #define STREAM_BUFFER_DURATION 1.5f // 1.5 sec
383 #define STREAM_BUFFER_SIZE(format_ptr) ((int)(ceil (STREAM_BUFFER_DURATION * ((format_ptr)->speed * (format_ptr)->width * (format_ptr)->channels))))
384
385 // We work with 1 sec sequences, so this buffer must be able to contain
386 // 1 sec of sound of the highest quality (48 KHz, 16 bit samples, stereo)
387 static unsigned char resampling_buffer [48000 * 2 * 2];
388
389
390 // Per-sfx data structure
391 typedef struct
392 {
393 unsigned char *file;
394 size_t filesize;
395 snd_format_t format;
396 unsigned int total_length;
397 char name[128];
398 } ogg_stream_persfx_t;
399
400 // Per-channel data structure
401 typedef struct
402 {
403 OggVorbis_File vf;
404 ov_decode_t ov_decode;
405 unsigned int sb_offset;
406 int bs;
407 snd_buffer_t sb; // must be at the end due to its dynamically allocated size
408 } ogg_stream_perchannel_t;
409
410
411 static const ov_callbacks callbacks = {ovcb_read, ovcb_seek, ovcb_close, ovcb_tell};
412
413 /*
414 ====================
415 OGG_FetchSound
416 ====================
417 */
OGG_FetchSound(void * sfxfetcher,void ** chfetcherpointer,unsigned int * start,unsigned int nbsampleframes)418 static const snd_buffer_t* OGG_FetchSound (void *sfxfetcher, void **chfetcherpointer, unsigned int *start, unsigned int nbsampleframes)
419 {
420 ogg_stream_perchannel_t* per_ch = (ogg_stream_perchannel_t *)*chfetcherpointer;
421 ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfxfetcher;
422 snd_buffer_t* sb;
423 int newlength, done, ret, bigendian;
424 unsigned int real_start;
425 unsigned int factor;
426
427 // If there's no fetcher structure attached to the channel yet
428 if (per_ch == NULL)
429 {
430 size_t buff_len, memsize;
431 snd_format_t sb_format;
432
433 sb_format.speed = snd_renderbuffer->format.speed;
434 sb_format.width = per_sfx->format.width;
435 sb_format.channels = per_sfx->format.channels;
436
437 buff_len = STREAM_BUFFER_SIZE(&sb_format);
438 memsize = sizeof (*per_ch) - sizeof (per_ch->sb.samples) + buff_len;
439 per_ch = (ogg_stream_perchannel_t *)Mem_Alloc (snd_mempool, memsize);
440
441 // Open it with the VorbisFile API
442 per_ch->ov_decode.buffer = per_sfx->file;
443 per_ch->ov_decode.ind = 0;
444 per_ch->ov_decode.buffsize = per_sfx->filesize;
445 if (qov_open_callbacks (&per_ch->ov_decode, &per_ch->vf, NULL, 0, callbacks) < 0)
446 {
447 Con_Printf("error while reading Ogg Vorbis stream \"%s\"\n", per_sfx->name);
448 Mem_Free (per_ch);
449 return NULL;
450 }
451 per_ch->bs = 0;
452
453 per_ch->sb_offset = 0;
454 per_ch->sb.format = sb_format;
455 per_ch->sb.nbframes = 0;
456 per_ch->sb.maxframes = buff_len / (per_ch->sb.format.channels * per_ch->sb.format.width);
457
458 *chfetcherpointer = per_ch;
459 }
460
461 real_start = *start;
462
463 sb = &per_ch->sb;
464 factor = per_sfx->format.width * per_sfx->format.channels;
465
466 // If the stream buffer can't contain that much samples anyway
467 if (nbsampleframes > sb->maxframes)
468 {
469 Con_Printf ("OGG_FetchSound: stream buffer too small (%u sample frames required)\n", nbsampleframes);
470 return NULL;
471 }
472
473 // If the data we need has already been decompressed in the sfxbuffer, just return it
474 if (per_ch->sb_offset <= real_start && per_ch->sb_offset + sb->nbframes >= real_start + nbsampleframes)
475 {
476 *start = per_ch->sb_offset;
477 return sb;
478 }
479
480 newlength = (int)(per_ch->sb_offset + sb->nbframes) - real_start;
481
482 // If we need to skip some data before decompressing the rest, or if the stream has looped
483 if (newlength < 0 || per_ch->sb_offset > real_start)
484 {
485 unsigned int time_start;
486 ogg_int64_t ogg_start;
487 int err;
488
489 if (real_start > (unsigned int)per_sfx->total_length)
490 {
491 Con_Printf ("OGG_FetchSound: asked for a start position after the end of the sfx! (%u > %u)\n",
492 real_start, per_sfx->total_length);
493 return NULL;
494 }
495
496 // We work with 200ms (1/5 sec) steps to avoid rounding errors
497 time_start = real_start * 5 / snd_renderbuffer->format.speed;
498 ogg_start = time_start * (per_sfx->format.speed / 5);
499 err = qov_pcm_seek (&per_ch->vf, ogg_start);
500 if (err != 0)
501 {
502 Con_Printf ("OGG_FetchSound: qov_pcm_seek(..., %d) returned %d\n",
503 real_start, err);
504 return NULL;
505 }
506 sb->nbframes = 0;
507
508 real_start = (unsigned int) ((float)ogg_start / per_sfx->format.speed * snd_renderbuffer->format.speed);
509 if (*start - real_start + nbsampleframes > sb->maxframes)
510 {
511 Con_Printf ("OGG_FetchSound: stream buffer too small after seek (%u sample frames required)\n",
512 *start - real_start + nbsampleframes);
513 per_ch->sb_offset = real_start;
514 return NULL;
515 }
516 }
517 // Else, move forward the samples we need to keep in the sound buffer
518 else
519 {
520 memmove (sb->samples, sb->samples + (real_start - per_ch->sb_offset) * factor, newlength * factor);
521 sb->nbframes = newlength;
522 }
523
524 per_ch->sb_offset = real_start;
525
526 // We add exactly 1 sec of sound to the buffer:
527 // 1- to ensure we won't lose any sample during the resampling process
528 // 2- to force one call to OGG_FetchSound per second to regulate the workload
529 if (sb->format.speed + sb->nbframes > sb->maxframes)
530 {
531 Con_Printf ("OGG_FetchSound: stream buffer overflow (%u sample frames / %u)\n",
532 sb->format.speed + sb->nbframes, sb->maxframes);
533 return NULL;
534 }
535 newlength = per_sfx->format.speed * factor; // -> 1 sec of sound before resampling
536 if(newlength > (int)sizeof(resampling_buffer))
537 newlength = sizeof(resampling_buffer);
538
539 // Decompress in the resampling_buffer
540 #if BYTE_ORDER == BIG_ENDIAN
541 bigendian = 1;
542 #else
543 bigendian = 0;
544 #endif
545 done = 0;
546 while ((ret = qov_read (&per_ch->vf, (char *)&resampling_buffer[done], (int)(newlength - done), bigendian, 2, 1, &per_ch->bs)) > 0)
547 done += ret;
548
549 Snd_AppendToSndBuffer (sb, resampling_buffer, (size_t)done / (size_t)factor, &per_sfx->format);
550
551 *start = per_ch->sb_offset;
552 return sb;
553 }
554
555
556 /*
557 ====================
558 OGG_FetchEnd
559 ====================
560 */
OGG_FetchEnd(void * chfetcherdata)561 static void OGG_FetchEnd (void *chfetcherdata)
562 {
563 ogg_stream_perchannel_t* per_ch = (ogg_stream_perchannel_t *)chfetcherdata;
564
565 if (per_ch != NULL)
566 {
567 // Free the ogg vorbis decoder
568 qov_clear (&per_ch->vf);
569
570 Mem_Free (per_ch);
571 }
572 }
573
574
575 /*
576 ====================
577 OGG_FreeSfx
578 ====================
579 */
OGG_FreeSfx(void * sfxfetcherdata)580 static void OGG_FreeSfx (void *sfxfetcherdata)
581 {
582 ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfxfetcherdata;
583
584 // Free the Ogg Vorbis file
585 Mem_Free(per_sfx->file);
586
587 // Free the stream structure
588 Mem_Free(per_sfx);
589 }
590
591
592 /*
593 ====================
594 OGG_GetFormat
595 ====================
596 */
OGG_GetFormat(sfx_t * sfx)597 static const snd_format_t* OGG_GetFormat (sfx_t* sfx)
598 {
599 ogg_stream_persfx_t* per_sfx = (ogg_stream_persfx_t *)sfx->fetcher_data;
600 return &per_sfx->format;
601 }
602
603 static const snd_fetcher_t ogg_fetcher = { OGG_FetchSound, OGG_FetchEnd, OGG_FreeSfx, OGG_GetFormat };
604
OGG_DecodeTags(vorbis_comment * vc,unsigned int * start,unsigned int * length,double samplesfactor,unsigned int numsamples,double * peak,double * gaindb)605 static void OGG_DecodeTags(vorbis_comment *vc, unsigned int *start, unsigned int *length, double samplesfactor, unsigned int numsamples, double *peak, double *gaindb)
606 {
607 const char *startcomment = NULL, *lengthcomment = NULL, *endcomment = NULL, *thiscomment = NULL;
608
609 *start = numsamples;
610 *length = numsamples;
611 *peak = 0.0;
612 *gaindb = 0.0;
613
614 if(!vc)
615 return;
616
617 thiscomment = qvorbis_comment_query(vc, "REPLAYGAIN_TRACK_PEAK", 0);
618 if(thiscomment)
619 *peak = atof(thiscomment);
620 thiscomment = qvorbis_comment_query(vc, "REPLAYGAIN_TRACK_GAIN", 0);
621 if(thiscomment)
622 *gaindb = atof(thiscomment);
623
624 startcomment = qvorbis_comment_query(vc, "LOOP_START", 0); // DarkPlaces, and some Japanese app
625 if(startcomment)
626 {
627 endcomment = qvorbis_comment_query(vc, "LOOP_END", 0);
628 if(!endcomment)
629 lengthcomment = qvorbis_comment_query(vc, "LOOP_LENGTH", 0);
630 }
631 else
632 {
633 startcomment = qvorbis_comment_query(vc, "LOOPSTART", 0); // RPG Maker VX
634 if(startcomment)
635 {
636 lengthcomment = qvorbis_comment_query(vc, "LOOPLENGTH", 0);
637 if(!lengthcomment)
638 endcomment = qvorbis_comment_query(vc, "LOOPEND", 0);
639 }
640 else
641 {
642 startcomment = qvorbis_comment_query(vc, "LOOPPOINT", 0); // Sonic Robo Blast 2
643 }
644 }
645
646 if(startcomment)
647 {
648 *start = (unsigned int) bound(0, atof(startcomment) * samplesfactor, numsamples);
649 if(endcomment)
650 *length = (unsigned int) bound(0, atof(endcomment) * samplesfactor, numsamples);
651 else if(lengthcomment)
652 *length = (unsigned int) bound(0, *start + atof(lengthcomment) * samplesfactor, numsamples);
653 }
654 }
655
656 /*
657 ====================
658 OGG_LoadVorbisFile
659
660 Load an Ogg Vorbis file into memory
661 ====================
662 */
OGG_LoadVorbisFile(const char * filename,sfx_t * sfx)663 qboolean OGG_LoadVorbisFile (const char *filename, sfx_t *sfx)
664 {
665 unsigned char *data;
666 fs_offset_t filesize;
667 ov_decode_t ov_decode;
668 OggVorbis_File vf;
669 vorbis_info *vi;
670 vorbis_comment *vc;
671 ogg_int64_t len, buff_len;
672 double peak, gaindb;
673
674 if (!vf_dll)
675 return false;
676
677 // Already loaded?
678 if (sfx->fetcher != NULL)
679 return true;
680
681 // Load the file
682 data = FS_LoadFile (filename, snd_mempool, false, &filesize);
683 if (data == NULL)
684 return false;
685
686 if (developer_loading.integer >= 2)
687 Con_Printf ("Loading Ogg Vorbis file \"%s\"\n", filename);
688
689 // Open it with the VorbisFile API
690 ov_decode.buffer = data;
691 ov_decode.ind = 0;
692 ov_decode.buffsize = filesize;
693 if (qov_open_callbacks (&ov_decode, &vf, NULL, 0, callbacks) < 0)
694 {
695 Con_Printf ("error while opening Ogg Vorbis file \"%s\"\n", filename);
696 Mem_Free(data);
697 return false;
698 }
699
700 // Get the stream information
701 vi = qov_info (&vf, -1);
702 if (vi->channels < 1 || vi->channels > 2)
703 {
704 Con_Printf("%s has an unsupported number of channels (%i)\n",
705 sfx->name, vi->channels);
706 qov_clear (&vf);
707 Mem_Free(data);
708 return false;
709 }
710
711 len = qov_pcm_total (&vf, -1) * vi->channels * 2; // 16 bits => "* 2"
712
713 // Decide if we go for a stream or a simple PCM cache
714 buff_len = (int)ceil (STREAM_BUFFER_DURATION * (snd_renderbuffer->format.speed * 2 * vi->channels));
715 if (snd_streaming.integer && len > (ogg_int64_t)filesize + 3 * buff_len)
716 {
717 ogg_stream_persfx_t* per_sfx;
718
719 if (developer_loading.integer >= 2)
720 Con_Printf ("Ogg sound file \"%s\" will be streamed\n", filename);
721 per_sfx = (ogg_stream_persfx_t *)Mem_Alloc (snd_mempool, sizeof (*per_sfx));
722 strlcpy(per_sfx->name, sfx->name, sizeof(per_sfx->name));
723 sfx->memsize += sizeof (*per_sfx);
724 per_sfx->file = data;
725 per_sfx->filesize = filesize;
726 sfx->memsize += filesize;
727
728 per_sfx->format.speed = vi->rate;
729 per_sfx->format.width = 2; // We always work with 16 bits samples
730 per_sfx->format.channels = vi->channels;
731
732 sfx->fetcher_data = per_sfx;
733 sfx->fetcher = &ogg_fetcher;
734 sfx->flags |= SFXFLAG_STREAMED;
735 sfx->total_length = (int)((size_t)len / (per_sfx->format.channels * 2) * ((double)snd_renderbuffer->format.speed / per_sfx->format.speed));
736 vc = qov_comment(&vf, -1);
737 OGG_DecodeTags(vc, &sfx->loopstart, &sfx->total_length, (double)snd_renderbuffer->format.speed / (double)per_sfx->format.speed, sfx->total_length, &peak, &gaindb);
738 per_sfx->total_length = sfx->total_length;
739 qov_clear (&vf);
740 }
741 else
742 {
743 char *buff;
744 ogg_int64_t done;
745 int bs, bigendian;
746 long ret;
747 snd_buffer_t *sb;
748 snd_format_t ogg_format;
749
750 if (developer_loading.integer >= 2)
751 Con_Printf ("Ogg sound file \"%s\" will be cached\n", filename);
752
753 // Decode it
754 buff = (char *)Mem_Alloc (snd_mempool, (int)len);
755 done = 0;
756 bs = 0;
757 #if BYTE_ORDER == BIG_ENDIAN
758 bigendian = 1;
759 #else
760 bigendian = 0;
761 #endif
762 while ((ret = qov_read (&vf, &buff[done], (int)(len - done), bigendian, 2, 1, &bs)) > 0)
763 done += ret;
764
765 // Build the sound buffer
766 ogg_format.speed = vi->rate;
767 ogg_format.channels = vi->channels;
768 ogg_format.width = 2; // We always work with 16 bits samples
769 sb = Snd_CreateSndBuffer ((unsigned char *)buff, (size_t)done / (vi->channels * 2), &ogg_format, snd_renderbuffer->format.speed);
770 if (sb == NULL)
771 {
772 qov_clear (&vf);
773 Mem_Free (data);
774 Mem_Free (buff);
775 return false;
776 }
777
778 sfx->fetcher = &wav_fetcher;
779 sfx->fetcher_data = sb;
780
781 sfx->total_length = sb->nbframes;
782 sfx->memsize += sb->maxframes * sb->format.channels * sb->format.width + sizeof (*sb) - sizeof (sb->samples);
783
784 sfx->flags &= ~SFXFLAG_STREAMED;
785 vc = qov_comment(&vf, -1);
786 OGG_DecodeTags(vc, &sfx->loopstart, &sfx->total_length, (double)snd_renderbuffer->format.speed / (double)sb->format.speed, sfx->total_length, &peak, &gaindb);
787 sb->nbframes = sfx->total_length;
788 qov_clear (&vf);
789 Mem_Free (data);
790 Mem_Free (buff);
791 }
792
793 if(peak)
794 {
795 sfx->volume_mult = min(1.0f / peak, exp(gaindb * 0.05f * log(10.0f)));
796 sfx->volume_peak = peak;
797 if (developer_loading.integer >= 2)
798 Con_Printf ("Ogg sound file \"%s\" uses ReplayGain (gain %f, peak %f)\n", filename, sfx->volume_mult, sfx->volume_peak);
799 }
800
801 return true;
802 }
803