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comparison src/audio/macosx/SDL_coreaudio.c @ 2043:adf732f1f016

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Formatting update
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:56:55 +0000
parents df06e6eb65c6
children 5f6550e5184f 37c9c4590689
comparison
equal deleted inserted replaced
2042:3908e1f808e1 2043:adf732f1f016
210 AudioStreamBasicDescription strdesc; 210 AudioStreamBasicDescription strdesc;
211 SDL_AudioFormat test_format = SDL_FirstAudioFormat(spec->format); 211 SDL_AudioFormat test_format = SDL_FirstAudioFormat(spec->format);
212 int valid_datatype = 0; 212 int valid_datatype = 0;
213 213
214 /* Setup a AudioStreamBasicDescription with the requested format */ 214 /* Setup a AudioStreamBasicDescription with the requested format */
215 memset(&strdesc, '\0', sizeof (AudioStreamBasicDescription)); 215 memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
216 strdesc.mFormatID = kAudioFormatLinearPCM; 216 strdesc.mFormatID = kAudioFormatLinearPCM;
217 strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked; 217 strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
218 strdesc.mChannelsPerFrame = spec->channels; 218 strdesc.mChannelsPerFrame = spec->channels;
219 strdesc.mSampleRate = spec->freq; 219 strdesc.mSampleRate = spec->freq;
220 strdesc.mFramesPerPacket = 1; 220 strdesc.mFramesPerPacket = 1;
221 221
222 while ((!valid_datatype) && (test_format)) { 222 while ((!valid_datatype) && (test_format)) {
223 spec->format = test_format; 223 spec->format = test_format;
224 /* Just a list of valid SDL formats, so people don't pass junk here. */ 224 /* Just a list of valid SDL formats, so people don't pass junk here. */
225 switch (test_format) { 225 switch (test_format) {
226 case AUDIO_U8: 226 case AUDIO_U8:
227 case AUDIO_S8: 227 case AUDIO_S8:
228 case AUDIO_U16LSB: 228 case AUDIO_U16LSB:
229 case AUDIO_S16LSB: 229 case AUDIO_S16LSB:
230 case AUDIO_U16MSB: 230 case AUDIO_U16MSB:
231 case AUDIO_S16MSB: 231 case AUDIO_S16MSB:
232 case AUDIO_S32LSB: 232 case AUDIO_S32LSB:
233 case AUDIO_S32MSB: 233 case AUDIO_S32MSB:
234 case AUDIO_F32LSB: 234 case AUDIO_F32LSB:
235 case AUDIO_F32MSB: 235 case AUDIO_F32MSB:
236 valid_datatype = 1; 236 valid_datatype = 1;
237 strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(spec->format); 237 strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(spec->format);
238 if (SDL_AUDIO_ISBIGENDIAN(spec->format)) 238 if (SDL_AUDIO_ISBIGENDIAN(spec->format))
239 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian; 239 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
240 240
241 if (SDL_AUDIO_ISFLOAT(spec->format)) 241 if (SDL_AUDIO_ISFLOAT(spec->format))
242 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat; 242 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat;
243 else if (SDL_AUDIO_ISSIGNED(spec->format)) 243 else if (SDL_AUDIO_ISSIGNED(spec->format))
244 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger; 244 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
245 break; 245 break;
246 } 246 }
247 } 247 }
248 248
249 if (!valid_datatype) { /* shouldn't happen, but just in case... */ 249 if (!valid_datatype) { /* shouldn't happen, but just in case... */
250 SDL_SetError("Unsupported audio format"); 250 SDL_SetError("Unsupported audio format");
251 return (-1); 251 return (-1);
252 } 252 }
253 253
254 strdesc.mBytesPerFrame = 254 strdesc.mBytesPerFrame =
255 strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8; 255 strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
256 strdesc.mBytesPerPacket = 256 strdesc.mBytesPerPacket =
257 strdesc.mBytesPerFrame * strdesc.mFramesPerPacket; 257 strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
258 258
259 /* Locate the default output audio unit */ 259 /* Locate the default output audio unit */
260 memset(&desc, '\0', sizeof (ComponentDescription)); 260 memset(&desc, '\0', sizeof(ComponentDescription));
261 desc.componentType = kAudioUnitComponentType; 261 desc.componentType = kAudioUnitComponentType;
262 desc.componentSubType = kAudioUnitSubType_Output; 262 desc.componentSubType = kAudioUnitSubType_Output;
263 desc.componentManufacturer = kAudioUnitID_DefaultOutput; 263 desc.componentManufacturer = kAudioUnitID_DefaultOutput;
264 desc.componentFlags = 0; 264 desc.componentFlags = 0;
265 desc.componentFlagsMask = 0; 265 desc.componentFlagsMask = 0;
278 CHECK_RESULT("AudioUnitInitialize") 278 CHECK_RESULT("AudioUnitInitialize")
279 /* Set the input format of the audio unit. */ 279 /* Set the input format of the audio unit. */
280 result = AudioUnitSetProperty(outputAudioUnit, 280 result = AudioUnitSetProperty(outputAudioUnit,
281 kAudioUnitProperty_StreamFormat, 281 kAudioUnitProperty_StreamFormat,
282 kAudioUnitScope_Input, 282 kAudioUnitScope_Input,
283 0, 283 0, &strdesc, sizeof(strdesc));
284 &strdesc, sizeof (strdesc));
285 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)") 284 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)")
286 /* Set the audio callback */ 285 /* Set the audio callback */
287 callback.inputProc = audioCallback; 286 callback.inputProc = audioCallback;
288 callback.inputProcRefCon = this; 287 callback.inputProcRefCon = this;
289 result = AudioUnitSetProperty(outputAudioUnit, 288 result = AudioUnitSetProperty(outputAudioUnit,