Mercurial > SDL_sound_CoreAudio
annotate alt_audio_convert.h @ 360:c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Wed, 12 Jun 2002 08:35:23 +0000 |
| parents | 7b9a0f3f030e |
| children | f61eadea1f44 |
| rev | line source |
|---|---|
| 338 | 1 /* |
| 2 Extended Audio Converter for SDL (Simple DirectMedia Layer) | |
| 3 Copyright (C) 2002 Frank Ranostaj | |
| 4 Institute of Applied Physik | |
| 5 Johann Wolfgang Goethe-Universität | |
| 6 Frankfurt am Main, Germany | |
| 7 | |
| 8 This library is free software; you can redistribute it and/or | |
| 9 modify it under the terms of the GNU Library General Public | |
| 10 License as published by the Free Software Foundation; either | |
| 11 version 2 of the License, or (at your option) any later version. | |
| 12 | |
| 13 This library is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 Library General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU Library General Public | |
| 19 License along with this library; if not, write to the Free | |
| 20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 21 | |
| 22 Frank Ranostaj | |
| 23 ranostaj@stud.uni-frankfurt.de | |
| 24 | |
| 25 (This code blatantly abducted for SDL_sound. Thanks, Frank! --ryan.) | |
| 26 | |
| 27 */ | |
| 28 | |
| 29 #ifndef _INCLUDE_AUDIO_CONVERT_H_ | |
| 30 #define _INCLUDE_AUDIO_CONVERT_H_ | |
| 31 | |
| 32 #include "SDL_audio.h" | |
| 33 #define Sound_AI_Loop 0x2 | |
| 34 #define _fsize 64 | |
| 35 | |
| 36 | |
| 37 typedef struct{ | |
|
360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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38 Sint16 c[16][2*_fsize]; |
| 338 | 39 char incr[16]; |
| 40 int pos_mod; | |
| 41 } VarFilter; | |
| 42 | |
| 43 typedef struct{ | |
|
360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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44 Uint8* buffer; |
| 338 | 45 int mode; |
| 46 VarFilter *filter; | |
| 47 } AdapterC; | |
| 48 | |
|
360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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49 /* |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
|
50 typedef struct{ |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
|
51 VarFilter filter; |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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52 double mult; // buffer must be len*buf_mult big |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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53 int add; |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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54 int (*adapter[32]) ( AdapterC Data, int length ); |
|
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
|
55 } SDL_AudioC; |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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56 |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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57 */ |
| 338 | 58 |
| 59 typedef struct{ | |
| 60 int needed; | |
| 61 VarFilter filter; | |
| 62 double len_mult; /* buffer must be len*len_mult big*/ | |
| 63 Uint8* buf; | |
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360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
|
64 int len; |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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65 int len_cvt; /* Length of converted audio buffer */ |
| 338 | 66 int add; |
| 67 int (*adapter[32]) ( AdapterC Data, int length ); | |
| 68 } Sound_AudioCVT; | |
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360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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69 |
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c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
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70 #define SDL_AI_Loop 0x01 |
| 338 | 71 |
| 72 extern DECLSPEC int Sound_ConvertAudio( Sound_AudioCVT *Data ); | |
|
360
c984aa6990f7
Fixes and enhancements from Frank Ranostaj.
Ryan C. Gordon <icculus@icculus.org>
parents:
338
diff
changeset
|
73 |
| 338 | 74 extern DECLSPEC int Sound_BuildAudioCVT( Sound_AudioCVT *Data, |
| 75 Uint16 src_format, Uint8 src_channels, int src_rate, | |
| 76 Uint16 dst_format, Uint8 dst_channels, int dst_rate ); | |
| 77 | |
| 78 #endif /* _INCLUDE_AUDIO_CONVERT_H_ */ |