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comparison SDL_sound_internal.h @ 340:5a72981b8cba

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Added optional, experimental audio conversion routines by Frank Ranostaj.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 20 May 2002 16:21:58 +0000
parents 31cc49d7d0ce
children cbb15ecf423a
comparison
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339:e3ac0d41668c 340:5a72981b8cba
195 int (*seek)(Sound_Sample *sample, Uint32 ms); 195 int (*seek)(Sound_Sample *sample, Uint32 ms);
196 } Sound_DecoderFunctions; 196 } Sound_DecoderFunctions;
197 197
198 198
199 /* A structure to hold a set of audio conversion filters and buffers */ 199 /* A structure to hold a set of audio conversion filters and buffers */
200 200 #if (defined SOUND_USE_ALTCVT)
201 #include "alt_audio_convert.h"
202 #else
201 typedef struct Sound_AudioCVT 203 typedef struct Sound_AudioCVT
202 { 204 {
203 int needed; /* Set to 1 if conversion possible */ 205 int needed; /* Set to 1 if conversion possible */
204 Uint16 src_format; /* Source audio format */ 206 Uint16 src_format; /* Source audio format */
205 Uint16 dst_format; /* Target audio format */ 207 Uint16 dst_format; /* Target audio format */
210 int len_mult; /* buffer must be len*len_mult big */ 212 int len_mult; /* buffer must be len*len_mult big */
211 double len_ratio; /* Given len, final size is len*len_ratio */ 213 double len_ratio; /* Given len, final size is len*len_ratio */
212 void (*filters[20])(struct Sound_AudioCVT *cvt, Uint16 *format); 214 void (*filters[20])(struct Sound_AudioCVT *cvt, Uint16 *format);
213 int filter_index; /* Current audio conversion function */ 215 int filter_index; /* Current audio conversion function */
214 } Sound_AudioCVT; 216 } Sound_AudioCVT;
215 217 #endif
216 218
217 typedef struct __SOUND_SAMPLEINTERNAL__ 219 typedef struct __SOUND_SAMPLEINTERNAL__
218 { 220 {
219 Sound_Sample *next; 221 Sound_Sample *next;
220 Sound_Sample *prev; 222 Sound_Sample *prev;