SDL_sound_CoreAudio: alt_audio

annotate alt_audio_convert.h @ 528:61a317171ef0 stable-1.0

Merge r536:537 from trunk: Speex bogus data check.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 11 Apr 2008 19:55:10 +0000
parents	5b00e43ec23c
children	45ee760a6f5a

rev	line source
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	2 * Extended Audio Converter for SDL (Simple DirectMedia Layer)
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	3 * Copyright (C) 2002 Frank Ranostaj
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	4 * Institute of Applied Physik
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	5 * Johann Wolfgang Goethe-Universität
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	6 * Frankfurt am Main, Germany
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	7 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	8 * This library is free software; you can redistribute it and/or
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	9 * modify it under the terms of the GNU Library General Public
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	10 * License as published by the Free Software Foundation; either
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	11 * version 2 of the License, or (at your option) any later version.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	12 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	13 * This library is distributed in the hope that it will be useful,
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	16 * Library General Public License for more details.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	17 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	18 * You should have received a copy of the GNU Library General Public
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	19 * License along with this library; if not, write to the Free
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	21 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	22 * Frank Ranostaj
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	23 * ranostaj@stud.uni-frankfurt.de
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	24 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	25 * (This code blatantly abducted for SDL_sound. Thanks, Frank! --ryan.)
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	26 */
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	28 #ifndef _INCLUDE_AUDIO_CONVERT_H_
eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	29 #define _INCLUDE_AUDIO_CONVERT_H_
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	31 #include "SDL_audio.h"
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 #define Sound_AI_Loop 0x2
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	33 #define _fsize 32
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	35 typedef struct{
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	36 Sint16 numerator;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	37 Sint16 denominator;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	38 } Fraction;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 typedef struct{
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	41 Sint16 c[16][4*_fsize];
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 366 diff changeset	42 Uint8 incr[16];
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	43 Fraction ratio;
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	44 int mask;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	45 } VarFilter;
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	47 typedef struct{
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	48 Uint8* buffer;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49 int mode;
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 VarFilter *filter;
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 } AdapterC;
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	53 typedef int (*Adapter) ( AdapterC Data, int length );
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	54
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	55 typedef struct{
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	56 VarFilter filter;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	57 int filter_index;
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	58 Adapter adapter[32];
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	59 /* buffer must be lenlen_mult(+len_add) big /
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	60 int len_mult;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	61 int len_add;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	62 double add;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	63
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	64 /* the following elements are provided for compatibility: */
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	65 /* the size of the output is approx lenlen_ratio /
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	66 double len_ratio;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	67 Uint8* buf; /* input/output buffer */
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	68 int needed; /* 0 if nothing to be done, 1 otherwise */
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	69 int len; /* Length of the input */
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 366 diff changeset	70 int len_cvt; /* Length of converted audio buffer */
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 } Sound_AudioCVT;
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	73 #define SDL_SOUND_Loop 0x10
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	74
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	75 #ifndef SNDDECLSPEC
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	76 #define SNDDECLSPEC DECLSPEC
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	77 #endif
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	78
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	79 extern SNDDECLSPEC int Sound_AltConvertAudio( Sound_AudioCVT *Data,
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	80 Uint8* buffer, int length, int mode );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	81
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	82 extern SNDDECLSPEC int Sound_AltBuildAudioCVT( Sound_AudioCVT *Data,
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	83 SDL_AudioSpec src, SDL_AudioSpec dst );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	84
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	85 extern SNDDECLSPEC int Sound_estimateBufferSize( Sound_AudioCVT *Data,
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	86 int length );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	87
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	88 #endif /* _INCLUDE_AUDIO_CONVERT_H_ */
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	89

Mercurial > SDL_sound_CoreAudio

annotate alt_audio_convert.h @ 528:61a317171ef0 stable-1.0