2 * OpenAL cross platform audio library
3 * Copyright (C) 2011 by Chris Robinson
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library 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. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
31 #include "bformatdec.h"
38 /* Current data set limits defined by the makehrtf utility. */
39 #define MIN_IR_SIZE (8)
40 #define MAX_IR_SIZE (128)
41 #define MOD_IR_SIZE (8)
43 #define MIN_EV_COUNT (5)
44 #define MAX_EV_COUNT (128)
46 #define MIN_AZ_COUNT (1)
47 #define MAX_AZ_COUNT (128)
49 static const ALchar magicMarker00
[8] = "MinPHR00";
50 static const ALchar magicMarker01
[8] = "MinPHR01";
52 /* First value for pass-through coefficients (remaining are 0), used for omni-
53 * directional sounds. */
54 static const ALfloat PassthruCoeff
= 32767.0f
* 0.707106781187f
/*sqrt(0.5)*/;
56 static struct Hrtf
*LoadedHrtfs
= NULL
;
59 /* Calculate the elevation index given the polar elevation in radians. This
60 * will return an index between 0 and (evcount - 1). Assumes the FPU is in
63 static ALsizei
CalcEvIndex(ALsizei evcount
, ALfloat ev
)
65 ev
= (F_PI_2
+ ev
) * (evcount
-1) / F_PI
;
66 return mini(fastf2i(ev
+ 0.5f
), evcount
-1);
69 /* Calculate the azimuth index given the polar azimuth in radians. This will
70 * return an index between 0 and (azcount - 1). Assumes the FPU is in round-to-
73 static ALsizei
CalcAzIndex(ALsizei azcount
, ALfloat az
)
75 az
= (F_TAU
+ az
) * azcount
/ F_TAU
;
76 return fastf2i(az
+ 0.5f
) % azcount
;
79 /* Calculates static HRIR coefficients and delays for the given polar elevation
80 * and azimuth in radians. The coefficients are normalized.
82 void GetHrtfCoeffs(const struct Hrtf
*Hrtf
, ALfloat elevation
, ALfloat azimuth
, ALfloat spread
, ALfloat (*coeffs
)[2], ALsizei
*delays
)
84 ALsizei evidx
, azidx
, lidx
, ridx
;
85 ALsizei azcount
, evoffset
;
89 dirfact
= 1.0f
- (spread
/ F_TAU
);
91 /* Claculate elevation index. */
92 evidx
= CalcEvIndex(Hrtf
->evCount
, elevation
);
93 azcount
= Hrtf
->azCount
[evidx
];
94 evoffset
= Hrtf
->evOffset
[evidx
];
96 /* Calculate azimuth index. */
97 azidx
= CalcAzIndex(Hrtf
->azCount
[evidx
], azimuth
);
99 /* Calculate the HRIR indices for left and right channels. */
100 lidx
= evoffset
+ azidx
;
101 ridx
= evoffset
+ ((azcount
-azidx
) % azcount
);
103 /* Calculate the HRIR delays. */
104 delays
[0] = fastf2i(Hrtf
->delays
[lidx
]*dirfact
+ 0.5f
);
105 delays
[1] = fastf2i(Hrtf
->delays
[ridx
]*dirfact
+ 0.5f
);
107 /* Calculate the sample offsets for the HRIR indices. */
108 lidx
*= Hrtf
->irSize
;
109 ridx
*= Hrtf
->irSize
;
111 /* Calculate the normalized and attenuated HRIR coefficients. */
113 coeffs
[i
][0] = lerp(PassthruCoeff
, Hrtf
->coeffs
[lidx
+i
], dirfact
) * (1.0f
/32767.0f
);
114 coeffs
[i
][1] = lerp(PassthruCoeff
, Hrtf
->coeffs
[ridx
+i
], dirfact
) * (1.0f
/32767.0f
);
115 for(i
= 1;i
< Hrtf
->irSize
;i
++)
117 coeffs
[i
][0] = Hrtf
->coeffs
[lidx
+i
]*(1.0f
/32767.0f
) * dirfact
;
118 coeffs
[i
][1] = Hrtf
->coeffs
[ridx
+i
]*(1.0f
/32767.0f
) * dirfact
;
123 ALsizei
BuildBFormatHrtf(const struct Hrtf
*Hrtf
, DirectHrtfState
*state
, ALsizei NumChannels
, const ALfloat (*restrict AmbiPoints
)[2], const ALfloat (*restrict AmbiMatrix
)[2][MAX_AMBI_COEFFS
], ALsizei AmbiCount
)
125 /* Set this to 2 for dual-band HRTF processing. May require a higher quality
126 * band-splitter, or better calculation of the new IR length to deal with the
127 * tail generated by the filter.
130 BandSplitter splitter
;
131 ALsizei lidx
[HRTF_AMBI_MAX_CHANNELS
], ridx
[HRTF_AMBI_MAX_CHANNELS
];
132 ALsizei min_delay
= HRTF_HISTORY_LENGTH
;
133 ALfloat temps
[3][HRIR_LENGTH
];
134 ALsizei max_length
= 0;
137 for(c
= 0;c
< AmbiCount
;c
++)
143 /* Calculate elevation index. */
144 evidx
= (ALsizei
)floorf((F_PI_2
+ AmbiPoints
[c
][0]) *
145 (Hrtf
->evCount
-1)/F_PI
+ 0.5f
);
146 evidx
= mini(evidx
, Hrtf
->evCount
-1);
148 azcount
= Hrtf
->azCount
[evidx
];
149 evoffset
= Hrtf
->evOffset
[evidx
];
151 /* Calculate azimuth index for this elevation. */
152 azidx
= (ALsizei
)floorf((F_TAU
+AmbiPoints
[c
][1]) *
153 azcount
/F_TAU
+ 0.5f
) % azcount
;
155 /* Calculate indices for left and right channels. */
156 lidx
[c
] = evoffset
+ azidx
;
157 ridx
[c
] = evoffset
+ ((azcount
-azidx
) % azcount
);
159 min_delay
= mini(min_delay
, mini(Hrtf
->delays
[lidx
[c
]], Hrtf
->delays
[ridx
[c
]]));
162 memset(temps
, 0, sizeof(temps
));
163 bandsplit_init(&splitter
, 400.0f
/ (ALfloat
)Hrtf
->sampleRate
);
164 for(c
= 0;c
< AmbiCount
;c
++)
169 /* Convert the left FIR from shorts to float */
170 fir
= &Hrtf
->coeffs
[lidx
[c
] * Hrtf
->irSize
];
173 for(i
= 0;i
< Hrtf
->irSize
;i
++)
174 temps
[0][i
] = fir
[i
] / 32767.0f
;
178 /* Band-split left HRIR into low and high frequency responses. */
179 bandsplit_clear(&splitter
);
180 for(i
= 0;i
< Hrtf
->irSize
;i
++)
181 temps
[2][i
] = fir
[i
] / 32767.0f
;
182 bandsplit_process(&splitter
, temps
[0], temps
[1], temps
[2], HRIR_LENGTH
);
185 /* Add to the left output coefficients with the specified delay. */
186 delay
= Hrtf
->delays
[lidx
[c
]] - min_delay
;
187 for(i
= 0;i
< NumChannels
;++i
)
189 for(b
= 0;b
< NUM_BANDS
;b
++)
192 for(j
= delay
;j
< HRIR_LENGTH
;++j
)
193 state
->Chan
[i
].Coeffs
[j
][0] += temps
[b
][k
++] * AmbiMatrix
[c
][b
][i
];
196 max_length
= maxi(max_length
, mini(delay
+ Hrtf
->irSize
, HRIR_LENGTH
));
198 /* Convert the right FIR from shorts to float */
199 fir
= &Hrtf
->coeffs
[ridx
[c
] * Hrtf
->irSize
];
202 for(i
= 0;i
< Hrtf
->irSize
;i
++)
203 temps
[0][i
] = fir
[i
] / 32767.0f
;
207 /* Band-split right HRIR into low and high frequency responses. */
208 bandsplit_clear(&splitter
);
209 for(i
= 0;i
< Hrtf
->irSize
;i
++)
210 temps
[2][i
] = fir
[i
] / 32767.0f
;
211 bandsplit_process(&splitter
, temps
[0], temps
[1], temps
[2], HRIR_LENGTH
);
214 /* Add to the right output coefficients with the specified delay. */
215 delay
= Hrtf
->delays
[ridx
[c
]] - min_delay
;
216 for(i
= 0;i
< NumChannels
;++i
)
218 for(b
= 0;b
< NUM_BANDS
;b
++)
221 for(j
= delay
;j
< HRIR_LENGTH
;++j
)
222 state
->Chan
[i
].Coeffs
[j
][1] += temps
[b
][k
++] * AmbiMatrix
[c
][b
][i
];
225 max_length
= maxi(max_length
, mini(delay
+ Hrtf
->irSize
, HRIR_LENGTH
));
227 TRACE("Skipped min delay: %d, new combined length: %d\n", min_delay
, max_length
);
234 static struct Hrtf
*LoadHrtf00(const ALubyte
*data
, size_t datalen
, const_al_string filename
)
236 const ALubyte maxDelay
= HRTF_HISTORY_LENGTH
-1;
237 struct Hrtf
*Hrtf
= NULL
;
238 ALboolean failed
= AL_FALSE
;
239 ALuint rate
= 0, irCount
= 0;
242 ALubyte
*azCount
= NULL
;
243 ALushort
*evOffset
= NULL
;
244 ALshort
*coeffs
= NULL
;
245 const ALubyte
*delays
= NULL
;
250 ERR("Unexpected end of %s data (req %d, rem "SZFMT
")\n",
251 al_string_get_cstr(filename
), 9, datalen
);
256 rate
|= *(data
++)<<8;
257 rate
|= *(data
++)<<16;
258 rate
|= *(data
++)<<24;
262 irCount
|= *(data
++)<<8;
266 irSize
|= *(data
++)<<8;
272 if(irSize
< MIN_IR_SIZE
|| irSize
> MAX_IR_SIZE
|| (irSize
%MOD_IR_SIZE
))
274 ERR("Unsupported HRIR size: irSize=%d (%d to %d by %d)\n",
275 irSize
, MIN_IR_SIZE
, MAX_IR_SIZE
, MOD_IR_SIZE
);
278 if(evCount
< MIN_EV_COUNT
|| evCount
> MAX_EV_COUNT
)
280 ERR("Unsupported elevation count: evCount=%d (%d to %d)\n",
281 evCount
, MIN_EV_COUNT
, MAX_EV_COUNT
);
287 if(datalen
< evCount
*2)
289 ERR("Unexpected end of %s data (req %d, rem "SZFMT
")\n",
290 al_string_get_cstr(filename
), evCount
*2, datalen
);
294 azCount
= malloc(sizeof(azCount
[0])*evCount
);
295 evOffset
= malloc(sizeof(evOffset
[0])*evCount
);
296 if(azCount
== NULL
|| evOffset
== NULL
)
298 ERR("Out of memory.\n");
304 evOffset
[0] = *(data
++);
305 evOffset
[0] |= *(data
++)<<8;
307 for(i
= 1;i
< evCount
;i
++)
309 evOffset
[i
] = *(data
++);
310 evOffset
[i
] |= *(data
++)<<8;
312 if(evOffset
[i
] <= evOffset
[i
-1])
314 ERR("Invalid evOffset: evOffset[%d]=%d (last=%d)\n",
315 i
, evOffset
[i
], evOffset
[i
-1]);
319 azCount
[i
-1] = evOffset
[i
] - evOffset
[i
-1];
320 if(azCount
[i
-1] < MIN_AZ_COUNT
|| azCount
[i
-1] > MAX_AZ_COUNT
)
322 ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
323 i
-1, azCount
[i
-1], MIN_AZ_COUNT
, MAX_AZ_COUNT
);
327 if(irCount
<= evOffset
[i
-1])
329 ERR("Invalid evOffset: evOffset[%d]=%d (irCount=%d)\n",
330 i
-1, evOffset
[i
-1], irCount
);
334 azCount
[i
-1] = irCount
- evOffset
[i
-1];
335 if(azCount
[i
-1] < MIN_AZ_COUNT
|| azCount
[i
-1] > MAX_AZ_COUNT
)
337 ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
338 i
-1, azCount
[i
-1], MIN_AZ_COUNT
, MAX_AZ_COUNT
);
345 coeffs
= malloc(sizeof(coeffs
[0])*irSize
*irCount
);
348 ERR("Out of memory.\n");
355 size_t reqsize
= 2*irSize
*irCount
+ irCount
;
356 if(datalen
< reqsize
)
358 ERR("Unexpected end of %s data (req "SZFMT
", rem "SZFMT
")\n",
359 al_string_get_cstr(filename
), reqsize
, datalen
);
366 for(i
= 0;i
< irCount
*irSize
;i
+=irSize
)
368 for(j
= 0;j
< irSize
;j
++)
370 coeffs
[i
+j
] = *(data
++);
371 coeffs
[i
+j
] |= *(data
++)<<8;
379 for(i
= 0;i
< irCount
;i
++)
381 if(delays
[i
] > maxDelay
)
383 ERR("Invalid delays[%d]: %d (%d)\n", i
, delays
[i
], maxDelay
);
391 size_t total
= sizeof(struct Hrtf
);
392 total
+= sizeof(azCount
[0])*evCount
;
393 total
= (total
+1)&~1; /* Align for (u)short fields */
394 total
+= sizeof(evOffset
[0])*evCount
;
395 total
+= sizeof(coeffs
[0])*irSize
*irCount
;
396 total
+= sizeof(delays
[0])*irCount
;
397 total
+= al_string_length(filename
)+1;
399 Hrtf
= al_calloc(16, total
);
402 ERR("Out of memory.\n");
409 char *base
= (char*)Hrtf
;
410 uintptr_t offset
= sizeof(*Hrtf
);
412 Hrtf
->sampleRate
= rate
;
413 Hrtf
->irSize
= irSize
;
414 Hrtf
->evCount
= evCount
;
415 Hrtf
->azCount
= ((ALubyte
*)(base
+ offset
)); offset
+= evCount
*sizeof(Hrtf
->azCount
[0]);
416 offset
= (offset
+1)&~1; /* Align for (u)short fields */
417 Hrtf
->evOffset
= ((ALushort
*)(base
+ offset
)); offset
+= evCount
*sizeof(Hrtf
->evOffset
[0]);
418 Hrtf
->coeffs
= ((ALshort
*)(base
+ offset
)); offset
+= irSize
*irCount
*sizeof(Hrtf
->coeffs
[0]);
419 Hrtf
->delays
= ((ALubyte
*)(base
+ offset
)); offset
+= irCount
*sizeof(Hrtf
->delays
[0]);
420 Hrtf
->filename
= ((char*)(base
+ offset
));
423 memcpy((void*)Hrtf
->azCount
, azCount
, sizeof(azCount
[0])*evCount
);
424 memcpy((void*)Hrtf
->evOffset
, evOffset
, sizeof(evOffset
[0])*evCount
);
425 memcpy((void*)Hrtf
->coeffs
, coeffs
, sizeof(coeffs
[0])*irSize
*irCount
);
426 memcpy((void*)Hrtf
->delays
, delays
, sizeof(delays
[0])*irCount
);
427 memcpy((void*)Hrtf
->filename
, al_string_get_cstr(filename
), al_string_length(filename
)+1);
436 static struct Hrtf
*LoadHrtf01(const ALubyte
*data
, size_t datalen
, const_al_string filename
)
438 const ALubyte maxDelay
= HRTF_HISTORY_LENGTH
-1;
439 struct Hrtf
*Hrtf
= NULL
;
440 ALboolean failed
= AL_FALSE
;
441 ALuint rate
= 0, irCount
= 0;
442 ALubyte irSize
= 0, evCount
= 0;
443 const ALubyte
*azCount
= NULL
;
444 ALushort
*evOffset
= NULL
;
445 ALshort
*coeffs
= NULL
;
446 const ALubyte
*delays
= NULL
;
451 ERR("Unexpected end of %s data (req %d, rem "SZFMT
"\n",
452 al_string_get_cstr(filename
), 6, datalen
);
457 rate
|= *(data
++)<<8;
458 rate
|= *(data
++)<<16;
459 rate
|= *(data
++)<<24;
468 if(irSize
< MIN_IR_SIZE
|| irSize
> MAX_IR_SIZE
|| (irSize
%MOD_IR_SIZE
))
470 ERR("Unsupported HRIR size: irSize=%d (%d to %d by %d)\n",
471 irSize
, MIN_IR_SIZE
, MAX_IR_SIZE
, MOD_IR_SIZE
);
474 if(evCount
< MIN_EV_COUNT
|| evCount
> MAX_EV_COUNT
)
476 ERR("Unsupported elevation count: evCount=%d (%d to %d)\n",
477 evCount
, MIN_EV_COUNT
, MAX_EV_COUNT
);
483 if(datalen
< evCount
)
485 ERR("Unexpected end of %s data (req %d, rem "SZFMT
"\n",
486 al_string_get_cstr(filename
), evCount
, datalen
);
494 evOffset
= malloc(sizeof(evOffset
[0])*evCount
);
495 if(azCount
== NULL
|| evOffset
== NULL
)
497 ERR("Out of memory.\n");
503 for(i
= 0;i
< evCount
;i
++)
505 if(azCount
[i
] < MIN_AZ_COUNT
|| azCount
[i
] > MAX_AZ_COUNT
)
507 ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
508 i
, azCount
[i
], MIN_AZ_COUNT
, MAX_AZ_COUNT
);
517 irCount
= azCount
[0];
518 for(i
= 1;i
< evCount
;i
++)
520 evOffset
[i
] = evOffset
[i
-1] + azCount
[i
-1];
521 irCount
+= azCount
[i
];
524 coeffs
= malloc(sizeof(coeffs
[0])*irSize
*irCount
);
527 ERR("Out of memory.\n");
534 size_t reqsize
= 2*irSize
*irCount
+ irCount
;
535 if(datalen
< reqsize
)
537 ERR("Unexpected end of %s data (req "SZFMT
", rem "SZFMT
"\n",
538 al_string_get_cstr(filename
), reqsize
, datalen
);
545 for(i
= 0;i
< irCount
*irSize
;i
+=irSize
)
547 for(j
= 0;j
< irSize
;j
++)
551 coeff
|= *(data
++)<<8;
560 for(i
= 0;i
< irCount
;i
++)
562 if(delays
[i
] > maxDelay
)
564 ERR("Invalid delays[%d]: %d (%d)\n", i
, delays
[i
], maxDelay
);
572 size_t total
= sizeof(struct Hrtf
);
573 total
+= sizeof(azCount
[0])*evCount
;
574 total
= (total
+1)&~1; /* Align for (u)short fields */
575 total
+= sizeof(evOffset
[0])*evCount
;
576 total
+= sizeof(coeffs
[0])*irSize
*irCount
;
577 total
+= sizeof(delays
[0])*irCount
;
578 total
+= al_string_length(filename
)+1;
580 Hrtf
= al_calloc(16, total
);
583 ERR("Out of memory.\n");
590 char *base
= (char*)Hrtf
;
591 uintptr_t offset
= sizeof(*Hrtf
);
593 Hrtf
->sampleRate
= rate
;
594 Hrtf
->irSize
= irSize
;
595 Hrtf
->evCount
= evCount
;
596 Hrtf
->azCount
= ((ALubyte
*)(base
+ offset
)); offset
+= evCount
*sizeof(Hrtf
->azCount
[0]);
597 offset
= (offset
+1)&~1; /* Align for (u)short fields */
598 Hrtf
->evOffset
= ((ALushort
*)(base
+ offset
)); offset
+= evCount
*sizeof(Hrtf
->evOffset
[0]);
599 Hrtf
->coeffs
= ((ALshort
*)(base
+ offset
)); offset
+= irSize
*irCount
*sizeof(Hrtf
->coeffs
[0]);
600 Hrtf
->delays
= ((ALubyte
*)(base
+ offset
)); offset
+= irCount
*sizeof(Hrtf
->delays
[0]);
601 Hrtf
->filename
= ((char*)(base
+ offset
));
604 memcpy((void*)Hrtf
->azCount
, azCount
, sizeof(azCount
[0])*evCount
);
605 memcpy((void*)Hrtf
->evOffset
, evOffset
, sizeof(evOffset
[0])*evCount
);
606 memcpy((void*)Hrtf
->coeffs
, coeffs
, sizeof(coeffs
[0])*irSize
*irCount
);
607 memcpy((void*)Hrtf
->delays
, delays
, sizeof(delays
[0])*irCount
);
608 memcpy((void*)Hrtf
->filename
, al_string_get_cstr(filename
), al_string_length(filename
)+1);
616 static void AddFileEntry(vector_HrtfEntry
*list
, al_string
*filename
)
618 HrtfEntry entry
= { AL_STRING_INIT_STATIC(), NULL
};
619 struct Hrtf
*hrtf
= NULL
;
620 const HrtfEntry
*iter
;
621 struct FileMapping fmap
;
626 #define MATCH_FNAME(i) (al_string_cmp_cstr(*filename, (i)->hrtf->filename) == 0)
627 VECTOR_FIND_IF(iter
, const HrtfEntry
, *list
, MATCH_FNAME
);
628 if(iter
!= VECTOR_END(*list
))
630 TRACE("Skipping duplicate file entry %s\n", al_string_get_cstr(*filename
));
635 entry
.hrtf
= LoadedHrtfs
;
638 if(al_string_cmp_cstr(*filename
, entry
.hrtf
->filename
) == 0)
640 TRACE("Skipping load of already-loaded file %s\n", al_string_get_cstr(*filename
));
643 entry
.hrtf
= entry
.hrtf
->next
;
646 TRACE("Loading %s...\n", al_string_get_cstr(*filename
));
647 fmap
= MapFileToMem(al_string_get_cstr(*filename
));
650 ERR("Could not open %s\n", al_string_get_cstr(*filename
));
654 if(fmap
.len
< sizeof(magicMarker01
))
655 ERR("%s data is too short ("SZFMT
" bytes)\n", al_string_get_cstr(*filename
), fmap
.len
);
656 else if(memcmp(fmap
.ptr
, magicMarker01
, sizeof(magicMarker01
)) == 0)
658 TRACE("Detected data set format v1\n");
659 hrtf
= LoadHrtf01((const ALubyte
*)fmap
.ptr
+sizeof(magicMarker01
),
660 fmap
.len
-sizeof(magicMarker01
), *filename
663 else if(memcmp(fmap
.ptr
, magicMarker00
, sizeof(magicMarker00
)) == 0)
665 TRACE("Detected data set format v0\n");
666 hrtf
= LoadHrtf00((const ALubyte
*)fmap
.ptr
+sizeof(magicMarker00
),
667 fmap
.len
-sizeof(magicMarker00
), *filename
671 ERR("Invalid header in %s: \"%.8s\"\n", al_string_get_cstr(*filename
), (const char*)fmap
.ptr
);
676 ERR("Failed to load %s\n", al_string_get_cstr(*filename
));
680 hrtf
->next
= LoadedHrtfs
;
682 TRACE("Loaded HRTF support for format: %s %uhz\n",
683 DevFmtChannelsString(DevFmtStereo
), hrtf
->sampleRate
);
687 /* TODO: Get a human-readable name from the HRTF data (possibly coming in a
689 name
= strrchr(al_string_get_cstr(*filename
), '/');
690 if(!name
) name
= strrchr(al_string_get_cstr(*filename
), '\\');
691 if(!name
) name
= al_string_get_cstr(*filename
);
694 ext
= strrchr(name
, '.');
699 al_string_copy_cstr(&entry
.name
, name
);
701 al_string_copy_range(&entry
.name
, name
, ext
);
705 snprintf(str
, sizeof(str
), " #%d", i
+1);
706 al_string_append_cstr(&entry
.name
, str
);
710 #define MATCH_NAME(i) (al_string_cmp(entry.name, (i)->name) == 0)
711 VECTOR_FIND_IF(iter
, const HrtfEntry
, *list
, MATCH_NAME
);
713 } while(iter
!= VECTOR_END(*list
));
715 TRACE("Adding entry \"%s\" from file \"%s\"\n", al_string_get_cstr(entry
.name
),
716 al_string_get_cstr(*filename
));
717 VECTOR_PUSH_BACK(*list
, entry
);
720 al_string_deinit(filename
);
723 /* Unfortunate that we have to duplicate AddFileEntry to take a memory buffer
724 * for input instead of opening the given filename.
726 static void AddBuiltInEntry(vector_HrtfEntry
*list
, const ALubyte
*data
, size_t datalen
, al_string
*filename
)
728 HrtfEntry entry
= { AL_STRING_INIT_STATIC(), NULL
};
729 struct Hrtf
*hrtf
= NULL
;
730 const HrtfEntry
*iter
;
733 #define MATCH_FNAME(i) (al_string_cmp_cstr(*filename, (i)->hrtf->filename) == 0)
734 VECTOR_FIND_IF(iter
, const HrtfEntry
, *list
, MATCH_FNAME
);
735 if(iter
!= VECTOR_END(*list
))
737 TRACE("Skipping duplicate file entry %s\n", al_string_get_cstr(*filename
));
742 entry
.hrtf
= LoadedHrtfs
;
745 if(al_string_cmp_cstr(*filename
, entry
.hrtf
->filename
) == 0)
747 TRACE("Skipping load of already-loaded file %s\n", al_string_get_cstr(*filename
));
750 entry
.hrtf
= entry
.hrtf
->next
;
753 TRACE("Loading %s...\n", al_string_get_cstr(*filename
));
754 if(datalen
< sizeof(magicMarker01
))
756 ERR("%s data is too short ("SZFMT
" bytes)\n", al_string_get_cstr(*filename
), datalen
);
760 if(memcmp(data
, magicMarker01
, sizeof(magicMarker01
)) == 0)
762 TRACE("Detected data set format v1\n");
763 hrtf
= LoadHrtf01(data
+sizeof(magicMarker01
),
764 datalen
-sizeof(magicMarker01
), *filename
767 else if(memcmp(data
, magicMarker00
, sizeof(magicMarker00
)) == 0)
769 TRACE("Detected data set format v0\n");
770 hrtf
= LoadHrtf00(data
+sizeof(magicMarker00
),
771 datalen
-sizeof(magicMarker00
), *filename
775 ERR("Invalid header in %s: \"%.8s\"\n", al_string_get_cstr(*filename
), data
);
779 ERR("Failed to load %s\n", al_string_get_cstr(*filename
));
783 hrtf
->next
= LoadedHrtfs
;
785 TRACE("Loaded HRTF support for format: %s %uhz\n",
786 DevFmtChannelsString(DevFmtStereo
), hrtf
->sampleRate
);
792 al_string_copy(&entry
.name
, *filename
);
796 snprintf(str
, sizeof(str
), " #%d", i
+1);
797 al_string_append_cstr(&entry
.name
, str
);
801 #define MATCH_NAME(i) (al_string_cmp(entry.name, (i)->name) == 0)
802 VECTOR_FIND_IF(iter
, const HrtfEntry
, *list
, MATCH_NAME
);
804 } while(iter
!= VECTOR_END(*list
));
806 TRACE("Adding built-in entry \"%s\"\n", al_string_get_cstr(entry
.name
));
807 VECTOR_PUSH_BACK(*list
, entry
);
810 al_string_deinit(filename
);
814 #ifndef ALSOFT_EMBED_HRTF_DATA
815 #define IDR_DEFAULT_44100_MHR 1
816 #define IDR_DEFAULT_48000_MHR 2
818 static const ALubyte
*GetResource(int UNUSED(name
), size_t *size
)
825 #include "hrtf_res.h"
828 static const ALubyte
*GetResource(int name
, size_t *size
)
835 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT
| GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
,
836 (LPCWSTR
)GetResource
, &handle
838 rc
= FindResourceW(handle
, MAKEINTRESOURCEW(name
), MAKEINTRESOURCEW(MHRTYPE
));
839 res
= LoadResource(handle
, rc
);
841 *size
= SizeofResource(handle
, rc
);
842 return LockResource(res
);
845 #elif defined(__APPLE__)
847 #include <Availability.h>
848 #include <mach-o/getsect.h>
849 #include <mach-o/ldsyms.h>
851 static const ALubyte
*GetResource(int name
, size_t *size
)
853 #if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && (__MAC_OS_X_VERSION_MAX_ALLOWED >= 1070)
854 /* NOTE: OSX 10.7 and up need to call getsectiondata(&_mh_dylib_header, ...). However, that
855 * call requires 10.7.
857 if(name
== IDR_DEFAULT_44100_MHR
)
858 return getsectiondata(&_mh_dylib_header
, "binary", "default_44100", size
);
859 if(name
== IDR_DEFAULT_48000_MHR
)
860 return getsectiondata(&_mh_dylib_header
, "binary", "default_48000", size
);
862 if(name
== IDR_DEFAULT_44100_MHR
)
863 return getsectdata("binary", "default_44100", size
);
864 if(name
== IDR_DEFAULT_48000_MHR
)
865 return getsectdata("binary", "default_48000", size
);
873 extern const ALubyte _binary_default_44100_mhr_start
[] HIDDEN_DECL
;
874 extern const ALubyte _binary_default_44100_mhr_end
[] HIDDEN_DECL
;
875 extern const ALubyte _binary_default_44100_mhr_size
[] HIDDEN_DECL
;
877 extern const ALubyte _binary_default_48000_mhr_start
[] HIDDEN_DECL
;
878 extern const ALubyte _binary_default_48000_mhr_end
[] HIDDEN_DECL
;
879 extern const ALubyte _binary_default_48000_mhr_size
[] HIDDEN_DECL
;
881 static const ALubyte
*GetResource(int name
, size_t *size
)
883 if(name
== IDR_DEFAULT_44100_MHR
)
885 /* Make sure all symbols are referenced, to ensure the compiler won't
886 * ignore the declarations and lose the visibility attribute used to
887 * hide them (would be nice if ld or objcopy could automatically mark
888 * them as hidden when generating them, but apparently they can't).
890 const void *volatile ptr
=_binary_default_44100_mhr_size
;
892 *size
= _binary_default_44100_mhr_end
- _binary_default_44100_mhr_start
;
893 return _binary_default_44100_mhr_start
;
895 if(name
== IDR_DEFAULT_48000_MHR
)
897 const void *volatile ptr
=_binary_default_48000_mhr_size
;
899 *size
= _binary_default_48000_mhr_end
- _binary_default_48000_mhr_start
;
900 return _binary_default_48000_mhr_start
;
908 vector_HrtfEntry
EnumerateHrtf(const_al_string devname
)
910 vector_HrtfEntry list
= VECTOR_INIT_STATIC();
911 const char *defaulthrtf
= "";
912 const char *pathlist
= "";
913 bool usedefaults
= true;
915 if(ConfigValueStr(al_string_get_cstr(devname
), NULL
, "hrtf-paths", &pathlist
))
917 while(pathlist
&& *pathlist
)
919 const char *next
, *end
;
921 while(isspace(*pathlist
) || *pathlist
== ',')
923 if(*pathlist
== '\0')
926 next
= strchr(pathlist
, ',');
931 end
= pathlist
+ strlen(pathlist
);
935 while(end
!= pathlist
&& isspace(*(end
-1)))
939 al_string pname
= AL_STRING_INIT_STATIC();
940 vector_al_string flist
;
942 al_string_append_range(&pname
, pathlist
, end
);
944 flist
= SearchDataFiles(".mhr", al_string_get_cstr(pname
));
945 VECTOR_FOR_EACH_PARAMS(al_string
, flist
, AddFileEntry
, &list
);
946 VECTOR_DEINIT(flist
);
948 al_string_deinit(&pname
);
954 else if(ConfigValueExists(al_string_get_cstr(devname
), NULL
, "hrtf_tables"))
955 ERR("The hrtf_tables option is deprecated, please use hrtf-paths instead.\n");
959 vector_al_string flist
;
960 const ALubyte
*rdata
;
963 flist
= SearchDataFiles(".mhr", "openal/hrtf");
964 VECTOR_FOR_EACH_PARAMS(al_string
, flist
, AddFileEntry
, &list
);
965 VECTOR_DEINIT(flist
);
967 rdata
= GetResource(IDR_DEFAULT_44100_MHR
, &rsize
);
968 if(rdata
!= NULL
&& rsize
> 0)
970 al_string ename
= AL_STRING_INIT_STATIC();
971 al_string_copy_cstr(&ename
, "Built-In 44100hz");
972 AddBuiltInEntry(&list
, rdata
, rsize
, &ename
);
975 rdata
= GetResource(IDR_DEFAULT_48000_MHR
, &rsize
);
976 if(rdata
!= NULL
&& rsize
> 0)
978 al_string ename
= AL_STRING_INIT_STATIC();
979 al_string_copy_cstr(&ename
, "Built-In 48000hz");
980 AddBuiltInEntry(&list
, rdata
, rsize
, &ename
);
984 if(VECTOR_SIZE(list
) > 1 && ConfigValueStr(al_string_get_cstr(devname
), NULL
, "default-hrtf", &defaulthrtf
))
986 const HrtfEntry
*iter
;
987 /* Find the preferred HRTF and move it to the front of the list. */
988 #define FIND_ENTRY(i) (al_string_cmp_cstr((i)->name, defaulthrtf) == 0)
989 VECTOR_FIND_IF(iter
, const HrtfEntry
, list
, FIND_ENTRY
);
991 if(iter
== VECTOR_END(list
))
992 WARN("Failed to find default HRTF \"%s\"\n", defaulthrtf
);
993 else if(iter
!= VECTOR_BEGIN(list
))
995 HrtfEntry entry
= *iter
;
996 memmove(&VECTOR_ELEM(list
,1), &VECTOR_ELEM(list
,0),
997 (iter
-VECTOR_BEGIN(list
))*sizeof(HrtfEntry
));
998 VECTOR_ELEM(list
,0) = entry
;
1005 void FreeHrtfList(vector_HrtfEntry
*list
)
1007 #define CLEAR_ENTRY(i) do { \
1008 al_string_deinit(&(i)->name); \
1010 VECTOR_FOR_EACH(HrtfEntry
, *list
, CLEAR_ENTRY
);
1011 VECTOR_DEINIT(*list
);
1016 void FreeHrtfs(void)
1018 struct Hrtf
*Hrtf
= LoadedHrtfs
;
1023 struct Hrtf
*next
= Hrtf
->next
;