Mercurial > audio-send

annotate Alc/backends/send.c @ 15:19ff95c69cf5

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moved send.c to org file
author Robert McIntyre <rlm@mit.edu>
date Thu, 03 Nov 2011 12:08:39 -0700
parents 63312ec4a2bf
children
rev   line source
rlm@15 1
rlm@0 2 #include "config.h"
rlm@0 3 #include <stdlib.h>
rlm@0 4 #include "alMain.h"
rlm@0 5 #include "AL/al.h"
rlm@0 6 #include "AL/alc.h"
rlm@0 7 #include "alSource.h"
rlm@0 8 #include <jni.h>
rlm@0 9
rlm@0 10 //////////////////// Summary
rlm@0 11
rlm@0 12 struct send_data;
rlm@0 13 struct context_data;
rlm@0 14
rlm@0 15 static void addContext(ALCdevice *, ALCcontext *);
rlm@0 16 static void syncContexts(ALCcontext *master, ALCcontext *slave);
rlm@0 17 static void syncSources(ALsource *master, ALsource *slave,
rlm@0 18 ALCcontext *masterCtx, ALCcontext *slaveCtx);
rlm@0 19
rlm@0 20 static void syncSourcei(ALuint master, ALuint slave,
rlm@0 21 ALCcontext *masterCtx, ALCcontext *ctx2, ALenum param);
rlm@0 22 static void syncSourcef(ALuint master, ALuint slave,
rlm@0 23 ALCcontext *masterCtx, ALCcontext *ctx2, ALenum param);
rlm@0 24 static void syncSource3f(ALuint master, ALuint slave,
rlm@0 25 ALCcontext *masterCtx, ALCcontext *ctx2, ALenum param);
rlm@0 26
rlm@0 27 static void swapInContext(ALCdevice *, struct context_data *);
rlm@0 28 static void saveContext(ALCdevice *, struct context_data *);
rlm@0 29 static void limitContext(ALCdevice *, ALCcontext *);
rlm@0 30 static void unLimitContext(ALCdevice *);
rlm@0 31
rlm@0 32 static void init(ALCdevice *);
rlm@0 33 static void renderData(ALCdevice *, int samples);
rlm@0 34
rlm@0 35 #define UNUSED(x) (void)(x)
rlm@0 36
rlm@0 37 //////////////////// State
rlm@0 38
rlm@0 39 typedef struct context_data {
rlm@0 40 ALfloat ClickRemoval[MAXCHANNELS];
rlm@0 41 ALfloat PendingClicks[MAXCHANNELS];
rlm@0 42 ALvoid *renderBuffer;
rlm@0 43 ALCcontext *ctx;
rlm@0 44 } context_data;
rlm@0 45
rlm@0 46 typedef struct send_data {
rlm@0 47 ALuint size;
rlm@0 48 context_data **contexts;
rlm@0 49 ALuint numContexts;
rlm@0 50 ALuint maxContexts;
rlm@0 51 } send_data;
rlm@0 52
rlm@0 53
rlm@0 54
rlm@0 55 //////////////////// Context Creation / Synchronization
rlm@0 56
rlm@0 57 #define _MAKE_SYNC(NAME, INIT_EXPR, GET_EXPR, SET_EXPR) \
rlm@0 58 void NAME (ALuint sourceID1, ALuint sourceID2, \
rlm@0 59 ALCcontext *ctx1, ALCcontext *ctx2, \
rlm@0 60 ALenum param){ \
rlm@0 61 INIT_EXPR; \
rlm@0 62 ALCcontext *current = alcGetCurrentContext(); \
rlm@0 63 alcMakeContextCurrent(ctx1); \
rlm@0 64 GET_EXPR; \
rlm@0 65 alcMakeContextCurrent(ctx2); \
rlm@0 66 SET_EXPR; \
rlm@0 67 alcMakeContextCurrent(current); \
rlm@0 68 }
rlm@0 69
rlm@0 70 #define MAKE_SYNC(NAME, TYPE, GET, SET) \
rlm@0 71 _MAKE_SYNC(NAME, \
rlm@0 72 TYPE value, \
rlm@0 73 GET(sourceID1, param, &value), \
rlm@0 74 SET(sourceID2, param, value))
rlm@0 75
rlm@0 76 #define MAKE_SYNC3(NAME, TYPE, GET, SET) \
rlm@0 77 _MAKE_SYNC(NAME, \
rlm@0 78 TYPE value1; TYPE value2; TYPE value3;, \
rlm@0 79 GET(sourceID1, param, &value1, &value2, &value3), \
rlm@0 80 SET(sourceID2, param, value1, value2, value3))
rlm@0 81
rlm@0 82 MAKE_SYNC( syncSourcei, ALint, alGetSourcei, alSourcei);
rlm@0 83 MAKE_SYNC( syncSourcef, ALfloat, alGetSourcef, alSourcef);
rlm@0 84 MAKE_SYNC3(syncSource3i, ALint, alGetSource3i, alSource3i);
rlm@0 85 MAKE_SYNC3(syncSource3f, ALfloat, alGetSource3f, alSource3f);
rlm@0 86
rlm@0 87 void syncSources(ALsource *masterSource, ALsource *slaveSource,
rlm@0 88 ALCcontext *masterCtx, ALCcontext *slaveCtx){
rlm@0 89 ALuint master = masterSource->source;
rlm@0 90 ALuint slave = slaveSource->source;
rlm@0 91 ALCcontext *current = alcGetCurrentContext();
rlm@0 92
rlm@0 93 syncSourcef(master,slave,masterCtx,slaveCtx,AL_PITCH);
rlm@0 94 syncSourcef(master,slave,masterCtx,slaveCtx,AL_GAIN);
rlm@0 95 syncSourcef(master,slave,masterCtx,slaveCtx,AL_MAX_DISTANCE);
rlm@0 96 syncSourcef(master,slave,masterCtx,slaveCtx,AL_ROLLOFF_FACTOR);
rlm@0 97 syncSourcef(master,slave,masterCtx,slaveCtx,AL_REFERENCE_DISTANCE);
rlm@0 98 syncSourcef(master,slave,masterCtx,slaveCtx,AL_MIN_GAIN);
rlm@0 99 syncSourcef(master,slave,masterCtx,slaveCtx,AL_MAX_GAIN);
rlm@0 100 syncSourcef(master,slave,masterCtx,slaveCtx,AL_CONE_OUTER_GAIN);
rlm@0 101 syncSourcef(master,slave,masterCtx,slaveCtx,AL_CONE_INNER_ANGLE);
rlm@0 102 syncSourcef(master,slave,masterCtx,slaveCtx,AL_CONE_OUTER_ANGLE);
rlm@0 103 syncSourcef(master,slave,masterCtx,slaveCtx,AL_SEC_OFFSET);
rlm@0 104 syncSourcef(master,slave,masterCtx,slaveCtx,AL_SAMPLE_OFFSET);
rlm@0 105 syncSourcef(master,slave,masterCtx,slaveCtx,AL_BYTE_OFFSET);
rlm@0 106
rlm@0 107 syncSource3f(master,slave,masterCtx,slaveCtx,AL_POSITION);
rlm@0 108 syncSource3f(master,slave,masterCtx,slaveCtx,AL_VELOCITY);
rlm@0 109 syncSource3f(master,slave,masterCtx,slaveCtx,AL_DIRECTION);
rlm@0 110
rlm@0 111 syncSourcei(master,slave,masterCtx,slaveCtx,AL_SOURCE_RELATIVE);
rlm@0 112 syncSourcei(master,slave,masterCtx,slaveCtx,AL_LOOPING);
rlm@0 113
rlm@0 114 alcMakeContextCurrent(masterCtx);
rlm@0 115 ALint source_type;
rlm@0 116 alGetSourcei(master, AL_SOURCE_TYPE, &source_type);
rlm@0 117
rlm@0 118 // Only static sources are currently synchronized!
rlm@0 119 if (AL_STATIC == source_type){
rlm@0 120 ALint master_buffer;
rlm@0 121 ALint slave_buffer;
rlm@0 122 alGetSourcei(master, AL_BUFFER, &master_buffer);
rlm@0 123 alcMakeContextCurrent(slaveCtx);
rlm@0 124 alGetSourcei(slave, AL_BUFFER, &slave_buffer);
rlm@0 125 if (master_buffer != slave_buffer){
rlm@0 126 alSourcei(slave, AL_BUFFER, master_buffer);
rlm@0 127 }
rlm@0 128 }
rlm@0 129
rlm@0 130 // Synchronize the state of the two sources.
rlm@0 131 alcMakeContextCurrent(masterCtx);
rlm@0 132 ALint masterState;
rlm@0 133 ALint slaveState;
rlm@0 134
rlm@0 135 alGetSourcei(master, AL_SOURCE_STATE, &masterState);
rlm@0 136 alcMakeContextCurrent(slaveCtx);
rlm@0 137 alGetSourcei(slave, AL_SOURCE_STATE, &slaveState);
rlm@0 138
rlm@0 139 if (masterState != slaveState){
rlm@0 140 switch (masterState){
rlm@0 141 case AL_INITIAL : alSourceRewind(slave); break;
rlm@0 142 case AL_PLAYING : alSourcePlay(slave); break;
rlm@0 143 case AL_PAUSED : alSourcePause(slave); break;
rlm@0 144 case AL_STOPPED : alSourceStop(slave); break;
rlm@0 145 }
rlm@0 146 }
rlm@0 147 // Restore whatever context was previously active.
rlm@0 148 alcMakeContextCurrent(current);
rlm@0 149 }
rlm@0 150
rlm@0 151
rlm@0 152 void syncContexts(ALCcontext *master, ALCcontext *slave){
rlm@0 153 /* If there aren't sufficient sources in slave to mirror
rlm@0 154 the sources in master, create them. */
rlm@0 155 ALCcontext *current = alcGetCurrentContext();
rlm@0 156
rlm@0 157 UIntMap *masterSourceMap = &(master->SourceMap);
rlm@0 158 UIntMap *slaveSourceMap = &(slave->SourceMap);
rlm@0 159 ALuint numMasterSources = masterSourceMap->size;
rlm@0 160 ALuint numSlaveSources = slaveSourceMap->size;
rlm@0 161
rlm@0 162 alcMakeContextCurrent(slave);
rlm@0 163 if (numSlaveSources < numMasterSources){
rlm@0 164 ALuint numMissingSources = numMasterSources - numSlaveSources;
rlm@0 165 ALuint newSources[numMissingSources];
rlm@0 166 alGenSources(numMissingSources, newSources);
rlm@0 167 }
rlm@0 168
rlm@0 169 /* Now, slave is gauranteed to have at least as many sources
rlm@0 170 as master. Sync each source from master to the corresponding
rlm@0 171 source in slave. */
rlm@0 172 int i;
rlm@0 173 for(i = 0; i < masterSourceMap->size; i++){
rlm@0 174 syncSources((ALsource*)masterSourceMap->array[i].value,
rlm@0 175 (ALsource*)slaveSourceMap->array[i].value,
rlm@0 176 master, slave);
rlm@0 177 }
rlm@0 178 alcMakeContextCurrent(current);
rlm@0 179 }
rlm@0 180
rlm@0 181 static void addContext(ALCdevice *Device, ALCcontext *context){
rlm@0 182 send_data *data = (send_data*)Device->ExtraData;
rlm@0 183 // expand array if necessary
rlm@0 184 if (data->numContexts >= data->maxContexts){
rlm@0 185 ALuint newMaxContexts = data->maxContexts*2 + 1;
rlm@0 186 data->contexts = realloc(data->contexts, newMaxContexts*sizeof(context_data));
rlm@0 187 data->maxContexts = newMaxContexts;
rlm@0 188 }
rlm@0 189 // create context_data and add it to the main array
rlm@0 190 context_data *ctxData;
rlm@0 191 ctxData = (context_data*)calloc(1, sizeof(*ctxData));
rlm@13 192 ctxData->renderBuffer =
rlm@13 193 malloc(BytesFromDevFmt(Device->FmtType) *
rlm@13 194 Device->NumChan * Device->UpdateSize);
rlm@0 195 ctxData->ctx = context;
rlm@0 196
rlm@0 197 data->contexts[data->numContexts] = ctxData;
rlm@0 198 data->numContexts++;
rlm@0 199 }
rlm@0 200
rlm@0 201
rlm@0 202 //////////////////// Context Switching
rlm@0 203
rlm@0 204 /* A device brings along with it two pieces of state
rlm@0 205 * which have to be swapped in and out with each context.
rlm@0 206 */
rlm@0 207 static void swapInContext(ALCdevice *Device, context_data *ctxData){
rlm@0 208 memcpy(Device->ClickRemoval, ctxData->ClickRemoval, sizeof(ALfloat)*MAXCHANNELS);
rlm@0 209 memcpy(Device->PendingClicks, ctxData->PendingClicks, sizeof(ALfloat)*MAXCHANNELS);
rlm@0 210 }
rlm@0 211
rlm@0 212 static void saveContext(ALCdevice *Device, context_data *ctxData){
rlm@0 213 memcpy(ctxData->ClickRemoval, Device->ClickRemoval, sizeof(ALfloat)*MAXCHANNELS);
rlm@0 214 memcpy(ctxData->PendingClicks, Device->PendingClicks, sizeof(ALfloat)*MAXCHANNELS);
rlm@0 215 }
rlm@0 216
rlm@0 217 static ALCcontext **currentContext;
rlm@0 218 static ALuint currentNumContext;
rlm@0 219
rlm@0 220 /* By default, all contexts are rendered at once for each call to aluMixData.
rlm@0 221 * This function uses the internals of the ALCdecice struct to temporarly
rlm@0 222 * cause aluMixData to only render the chosen context.
rlm@0 223 */
rlm@0 224 static void limitContext(ALCdevice *Device, ALCcontext *ctx){
rlm@0 225 currentContext = Device->Contexts;
rlm@0 226 currentNumContext = Device->NumContexts;
rlm@0 227 Device->Contexts = &ctx;
rlm@0 228 Device->NumContexts = 1;
rlm@0 229 }
rlm@0 230
rlm@0 231 static void unLimitContext(ALCdevice *Device){
rlm@0 232 Device->Contexts = currentContext;
rlm@0 233 Device->NumContexts = currentNumContext;
rlm@0 234 }
rlm@0 235
rlm@0 236
rlm@0 237 //////////////////// Main Device Loop
rlm@0 238
rlm@0 239 /* Establish the LWJGL context as the main context, which will
rlm@0 240 * be synchronized to all the slave contexts
rlm@0 241 */
rlm@0 242 static void init(ALCdevice *Device){
rlm@0 243 ALCcontext *masterContext = alcGetCurrentContext();
rlm@0 244 addContext(Device, masterContext);
rlm@0 245 }
rlm@0 246
rlm@0 247
rlm@0 248 static void renderData(ALCdevice *Device, int samples){
rlm@0 249 if(!Device->Connected){return;}
rlm@0 250 send_data *data = (send_data*)Device->ExtraData;
rlm@0 251 ALCcontext *current = alcGetCurrentContext();
rlm@0 252
rlm@0 253 ALuint i;
rlm@0 254 for (i = 1; i < data->numContexts; i++){
rlm@0 255 syncContexts(data->contexts[0]->ctx , data->contexts[i]->ctx);
rlm@0 256 }
rlm@0 257
rlm@0 258 if ((uint) samples > Device->UpdateSize){
rlm@0 259 printf("exceeding internal buffer size; dropping samples\n");
rlm@0 260 printf("requested %d; available %d\n", samples, Device->UpdateSize);
rlm@0 261 samples = (int) Device->UpdateSize;
rlm@0 262 }
rlm@0 263
rlm@0 264 for (i = 0; i < data->numContexts; i++){
rlm@0 265 context_data *ctxData = data->contexts[i];
rlm@0 266 ALCcontext *ctx = ctxData->ctx;
rlm@0 267 alcMakeContextCurrent(ctx);
rlm@0 268 limitContext(Device, ctx);
rlm@0 269 swapInContext(Device, ctxData);
rlm@0 270 aluMixData(Device, ctxData->renderBuffer, samples);
rlm@0 271 saveContext(Device, ctxData);
rlm@0 272 unLimitContext(Device);
rlm@0 273 }
rlm@0 274 alcMakeContextCurrent(current);
rlm@0 275 }
rlm@0 276
rlm@0 277
rlm@0 278 //////////////////// JNI Methods
rlm@0 279
rlm@7 280 #include "com_aurellem_send_AudioSend.h"
rlm@0 281
rlm@0 282 /*
rlm@7 283 * Class: com_aurellem_send_AudioSend
rlm@0 284 * Method: nstep
rlm@0 285 * Signature: (JI)V
rlm@0 286 */
rlm@7 287 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_nstep
rlm@0 288 (JNIEnv *env, jclass clazz, jlong device, jint samples){
rlm@0 289 UNUSED(env);UNUSED(clazz);UNUSED(device);
rlm@0 290 renderData((ALCdevice*)((intptr_t)device), samples);
rlm@0 291 }
rlm@0 292
rlm@0 293 /*
rlm@7 294 * Class: com_aurellem_send_AudioSend
rlm@0 295 * Method: ngetSamples
rlm@0 296 * Signature: (JLjava/nio/ByteBuffer;III)V
rlm@0 297 */
rlm@7 298 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_ngetSamples
rlm@0 299 (JNIEnv *env, jclass clazz, jlong device, jobject buffer, jint position,
rlm@0 300 jint samples, jint n){
rlm@0 301 UNUSED(clazz);
rlm@0 302
rlm@0 303 ALvoid *buffer_address =
rlm@0 304 ((ALbyte *)(((char*)(*env)->GetDirectBufferAddress(env, buffer)) + position));
rlm@0 305 ALCdevice *recorder = (ALCdevice*) ((intptr_t)device);
rlm@0 306 send_data *data = (send_data*)recorder->ExtraData;
rlm@0 307 if ((ALuint)n > data->numContexts){return;}
rlm@15 308
rlm@15 309 //printf("Want %d samples for listener %d\n", samples, n);
rlm@15 310 //printf("Device's format type is %d bytes per sample,\n",
rlm@15 311 // BytesFromDevFmt(recorder->FmtType));
rlm@15 312 //printf("and it has %d channels, making for %d requested bytes\n",
rlm@15 313 // recorder->NumChan,
rlm@15 314 // BytesFromDevFmt(recorder->FmtType) * recorder->NumChan * samples);
rlm@13 315
rlm@13 316 memcpy(buffer_address, data->contexts[n]->renderBuffer,
rlm@13 317 BytesFromDevFmt(recorder->FmtType) * recorder->NumChan * samples);
rlm@13 318 //samples*sizeof(ALfloat));
rlm@0 319 }
rlm@0 320
rlm@0 321 /*
rlm@7 322 * Class: com_aurellem_send_AudioSend
rlm@0 323 * Method: naddListener
rlm@0 324 * Signature: (J)V
rlm@0 325 */
rlm@7 326 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_naddListener
rlm@0 327 (JNIEnv *env, jclass clazz, jlong device){
rlm@0 328 UNUSED(env); UNUSED(clazz);
rlm@15 329 //printf("creating new context via naddListener\n");
rlm@0 330 ALCdevice *Device = (ALCdevice*) ((intptr_t)device);
rlm@0 331 ALCcontext *new = alcCreateContext(Device, NULL);
rlm@0 332 addContext(Device, new);
rlm@0 333 }
rlm@0 334
rlm@0 335 /*
rlm@7 336 * Class: com_aurellem_send_AudioSend
rlm@0 337 * Method: nsetNthListener3f
rlm@0 338 * Signature: (IFFFJI)V
rlm@0 339 */
rlm@7 340 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_nsetNthListener3f
rlm@0 341 (JNIEnv *env, jclass clazz, jint param,
rlm@0 342 jfloat v1, jfloat v2, jfloat v3, jlong device, jint contextNum){
rlm@0 343 UNUSED(env);UNUSED(clazz);
rlm@0 344
rlm@0 345 ALCdevice *Device = (ALCdevice*) ((intptr_t)device);
rlm@0 346 send_data *data = (send_data*)Device->ExtraData;
rlm@0 347
rlm@0 348 ALCcontext *current = alcGetCurrentContext();
rlm@0 349 if ((ALuint)contextNum > data->numContexts){return;}
rlm@0 350 alcMakeContextCurrent(data->contexts[contextNum]->ctx);
rlm@0 351 alListener3f(param, v1, v2, v3);
rlm@0 352 alcMakeContextCurrent(current);
rlm@0 353 }
rlm@0 354
rlm@0 355 /*
rlm@7 356 * Class: com_aurellem_send_AudioSend
rlm@0 357 * Method: nsetNthListenerf
rlm@0 358 * Signature: (IFJI)V
rlm@0 359 */
rlm@7 360 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_nsetNthListenerf
rlm@0 361 (JNIEnv *env, jclass clazz, jint param, jfloat v1, jlong device,
rlm@0 362 jint contextNum){
rlm@0 363
rlm@0 364 UNUSED(env);UNUSED(clazz);
rlm@0 365
rlm@0 366 ALCdevice *Device = (ALCdevice*) ((intptr_t)device);
rlm@0 367 send_data *data = (send_data*)Device->ExtraData;
rlm@0 368
rlm@0 369 ALCcontext *current = alcGetCurrentContext();
rlm@0 370 if ((ALuint)contextNum > data->numContexts){return;}
rlm@0 371 alcMakeContextCurrent(data->contexts[contextNum]->ctx);
rlm@0 372 alListenerf(param, v1);
rlm@0 373 alcMakeContextCurrent(current);
rlm@0 374 }
rlm@0 375
rlm@0 376 /*
rlm@7 377 * Class: com_aurellem_send_AudioSend
rlm@0 378 * Method: ninitDevice
rlm@0 379 * Signature: (J)V
rlm@0 380 */
rlm@7 381 JNIEXPORT void JNICALL Java_com_aurellem_send_AudioSend_ninitDevice
rlm@0 382 (JNIEnv *env, jclass clazz, jlong device){
rlm@0 383 UNUSED(env);UNUSED(clazz);
rlm@0 384
rlm@0 385 ALCdevice *Device = (ALCdevice*) ((intptr_t)device);
rlm@0 386 init(Device);
rlm@0 387
rlm@0 388 }
rlm@0 389
rlm@0 390
rlm@13 391 /*
rlm@13 392 * Class: com_aurellem_send_AudioSend
rlm@13 393 * Method: ngetAudioFormat
rlm@13 394 * Signature: (J)Ljavax/sound/sampled/AudioFormat;
rlm@13 395 */
rlm@13 396 JNIEXPORT jobject JNICALL Java_com_aurellem_send_AudioSend_ngetAudioFormat
rlm@13 397 (JNIEnv *env, jclass clazz, jlong device){
rlm@13 398 UNUSED(clazz);
rlm@13 399 jclass AudioFormatClass =
rlm@13 400 (*env)->FindClass(env, "javax/sound/sampled/AudioFormat");
rlm@13 401 jmethodID AudioFormatConstructor =
rlm@13 402 (*env)->GetMethodID(env, AudioFormatClass, "<init>", "(FIIZZ)V");
rlm@13 403
rlm@13 404 ALCdevice *Device = (ALCdevice*) ((intptr_t)device);
rlm@13 405
rlm@13 406 //float frequency
rlm@13 407
rlm@13 408 int isSigned;
rlm@13 409 switch (Device->FmtType)
rlm@13 410 {
rlm@13 411 case DevFmtUByte:
rlm@13 412 case DevFmtUShort: isSigned = 0; break;
rlm@13 413 default : isSigned = 1;
rlm@13 414 }
rlm@13 415 float frequency = Device->Frequency;
rlm@13 416 int bitsPerFrame = (8 * BytesFromDevFmt(Device->FmtType));
rlm@13 417 int channels = Device->NumChan;
rlm@13 418
rlm@13 419
rlm@15 420 //printf("freq = %f, bpf = %d, channels = %d, signed? = %d\n",
rlm@15 421 // frequency, bitsPerFrame, channels, isSigned);
rlm@13 422
rlm@13 423 jobject format = (*env)->
rlm@13 424 NewObject(
rlm@13 425 env,AudioFormatClass,AudioFormatConstructor,
rlm@13 426 frequency,
rlm@13 427 bitsPerFrame,
rlm@13 428 channels,
rlm@13 429 isSigned,
rlm@13 430 0);
rlm@13 431 return format;
rlm@13 432 }
rlm@13 433
rlm@13 434
rlm@13 435
rlm@0 436 //////////////////// Device Initilization / Management
rlm@0 437
rlm@0 438 static const ALCchar sendDevice[] = "Multiple Audio Send";
rlm@0 439
rlm@0 440 static ALCboolean send_open_playback(ALCdevice *device,
rlm@0 441 const ALCchar *deviceName)
rlm@0 442 {
rlm@0 443 send_data *data;
rlm@0 444 // stop any buffering for stdout, so that I can
rlm@0 445 // see the printf statements in my terminal immediatley
rlm@0 446 setbuf(stdout, NULL);
rlm@0 447
rlm@0 448 if(!deviceName)
rlm@0 449 deviceName = sendDevice;
rlm@0 450 else if(strcmp(deviceName, sendDevice) != 0)
rlm@0 451 return ALC_FALSE;
rlm@0 452 data = (send_data*)calloc(1, sizeof(*data));
rlm@0 453 device->szDeviceName = strdup(deviceName);
rlm@0 454 device->ExtraData = data;
rlm@0 455 return ALC_TRUE;
rlm@0 456 }
rlm@0 457
rlm@0 458 static void send_close_playback(ALCdevice *device)
rlm@0 459 {
rlm@0 460 send_data *data = (send_data*)device->ExtraData;
rlm@0 461 alcMakeContextCurrent(NULL);
rlm@0 462 ALuint i;
rlm@0 463 // Destroy all slave contexts. LWJGL will take care of
rlm@0 464 // its own context.
rlm@0 465 for (i = 1; i < data->numContexts; i++){
rlm@0 466 context_data *ctxData = data->contexts[i];
rlm@0 467 alcDestroyContext(ctxData->ctx);
rlm@0 468 free(ctxData->renderBuffer);
rlm@0 469 free(ctxData);
rlm@0 470 }
rlm@0 471 free(data);
rlm@0 472 device->ExtraData = NULL;
rlm@0 473 }
rlm@0 474
rlm@0 475 static ALCboolean send_reset_playback(ALCdevice *device)
rlm@0 476 {
rlm@13 477 SetDefaultWFXChannelOrder(device);
rlm@0 478 return ALC_TRUE;
rlm@0 479 }
rlm@0 480
rlm@0 481 static void send_stop_playback(ALCdevice *Device){
rlm@0 482 UNUSED(Device);
rlm@0 483 }
rlm@0 484
rlm@0 485 static const BackendFuncs send_funcs = {
rlm@0 486 send_open_playback,
rlm@0 487 send_close_playback,
rlm@0 488 send_reset_playback,
rlm@0 489 send_stop_playback,
rlm@0 490 NULL,
rlm@0 491 NULL, /* These would be filled with functions to */
rlm@0 492 NULL, /* handle capturing audio if we we into that */
rlm@0 493 NULL, /* sort of thing... */
rlm@0 494 NULL,
rlm@0 495 NULL
rlm@0 496 };
rlm@0 497
rlm@0 498 ALCboolean alc_send_init(BackendFuncs *func_list){
rlm@0 499 *func_list = send_funcs;
rlm@0 500 return ALC_TRUE;
rlm@0 501 }
rlm@0 502
rlm@0 503 void alc_send_deinit(void){}
rlm@0 504
rlm@0 505 void alc_send_probe(enum DevProbe type)
rlm@0 506 {
rlm@0 507 switch(type)
rlm@0 508 {
rlm@0 509 case DEVICE_PROBE:
rlm@0 510 AppendDeviceList(sendDevice);
rlm@0 511 break;
rlm@0 512 case ALL_DEVICE_PROBE:
rlm@0 513 AppendAllDeviceList(sendDevice);
rlm@0 514 break;
rlm@0 515 case CAPTURE_DEVICE_PROBE:
rlm@0 516 break;
rlm@0 517 }
rlm@0 518 }