1 /* 2 ** 3 ** Copyright 2010, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 19 //#define LOG_NDEBUG 0 20 #define LOG_TAG "AudioEffect" 21 22 #include <stdint.h> 23 #include <sys/types.h> 24 #include <limits.h> 25 26 #include <private/media/AudioEffectShared.h> 27 #include <media/AudioEffect.h> 28 29 #include <utils/Log.h> 30 #include <binder/IPCThreadState.h> 31 32 33 34 namespace android { 35 36 // --------------------------------------------------------------------------- 37 38 AudioEffect::AudioEffect(const String16& opPackageName) 39 : mStatus(NO_INIT), mOpPackageName(opPackageName) 40 { 41 } 42 43 44 AudioEffect::AudioEffect(const effect_uuid_t *type, 45 const String16& opPackageName, 46 const effect_uuid_t *uuid, 47 int32_t priority, 48 effect_callback_t cbf, 49 void* user, 50 audio_session_t sessionId, 51 audio_io_handle_t io 52 ) 53 : mStatus(NO_INIT), mOpPackageName(opPackageName) 54 { 55 mStatus = set(type, uuid, priority, cbf, user, sessionId, io); 56 } 57 58 AudioEffect::AudioEffect(const char *typeStr, 59 const String16& opPackageName, 60 const char *uuidStr, 61 int32_t priority, 62 effect_callback_t cbf, 63 void* user, 64 audio_session_t sessionId, 65 audio_io_handle_t io 66 ) 67 : mStatus(NO_INIT), mOpPackageName(opPackageName) 68 { 69 effect_uuid_t type; 70 effect_uuid_t *pType = NULL; 71 effect_uuid_t uuid; 72 effect_uuid_t *pUuid = NULL; 73 74 ALOGV("Constructor string\n - type: %s\n - uuid: %s", typeStr, uuidStr); 75 76 if (typeStr != NULL) { 77 if (stringToGuid(typeStr, &type) == NO_ERROR) { 78 pType = &type; 79 } 80 } 81 82 if (uuidStr != NULL) { 83 if (stringToGuid(uuidStr, &uuid) == NO_ERROR) { 84 pUuid = &uuid; 85 } 86 } 87 88 mStatus = set(pType, pUuid, priority, cbf, user, sessionId, io); 89 } 90 91 status_t AudioEffect::set(const effect_uuid_t *type, 92 const effect_uuid_t *uuid, 93 int32_t priority, 94 effect_callback_t cbf, 95 void* user, 96 audio_session_t sessionId, 97 audio_io_handle_t io) 98 { 99 sp<IEffect> iEffect; 100 sp<IMemory> cblk; 101 int enabled; 102 103 ALOGV("set %p mUserData: %p uuid: %p timeLow %08x", this, user, type, type ? type->timeLow : 0); 104 105 if (mIEffect != 0) { 106 ALOGW("Effect already in use"); 107 return INVALID_OPERATION; 108 } 109 110 const sp<IAudioFlinger>& audioFlinger = AudioSystem::get_audio_flinger(); 111 if (audioFlinger == 0) { 112 ALOGE("set(): Could not get audioflinger"); 113 return NO_INIT; 114 } 115 116 if (type == NULL && uuid == NULL) { 117 ALOGW("Must specify at least type or uuid"); 118 return BAD_VALUE; 119 } 120 121 mPriority = priority; 122 mCbf = cbf; 123 mUserData = user; 124 mSessionId = sessionId; 125 126 memset(&mDescriptor, 0, sizeof(effect_descriptor_t)); 127 mDescriptor.type = *(type != NULL ? type : EFFECT_UUID_NULL); 128 mDescriptor.uuid = *(uuid != NULL ? uuid : EFFECT_UUID_NULL); 129 130 mIEffectClient = new EffectClient(this); 131 mClientPid = IPCThreadState::self()->getCallingPid(); 132 133 iEffect = audioFlinger->createEffect((effect_descriptor_t *)&mDescriptor, 134 mIEffectClient, priority, io, mSessionId, mOpPackageName, mClientPid, 135 &mStatus, &mId, &enabled); 136 137 if (iEffect == 0 || (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS)) { 138 char typeBuffer[64], uuidBuffer[64]; 139 guidToString(type, typeBuffer, sizeof(typeBuffer)); 140 guidToString(uuid, uuidBuffer, sizeof(uuidBuffer)); 141 ALOGE("set(): AudioFlinger could not create effect %s / %s, status: %d", 142 typeBuffer, uuidBuffer, mStatus); 143 if (iEffect == 0) { 144 mStatus = NO_INIT; 145 } 146 return mStatus; 147 } 148 149 mEnabled = (volatile int32_t)enabled; 150 151 cblk = iEffect->getCblk(); 152 if (cblk == 0) { 153 mStatus = NO_INIT; 154 ALOGE("Could not get control block"); 155 return mStatus; 156 } 157 158 mIEffect = iEffect; 159 mCblkMemory = cblk; 160 mCblk = static_cast<effect_param_cblk_t*>(cblk->pointer()); 161 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 162 mCblk->buffer = (uint8_t *)mCblk + bufOffset; 163 164 IInterface::asBinder(iEffect)->linkToDeath(mIEffectClient); 165 ALOGV("set() %p OK effect: %s id: %d status %d enabled %d pid %d", this, mDescriptor.name, mId, 166 mStatus, mEnabled, mClientPid); 167 168 if (mSessionId > AUDIO_SESSION_OUTPUT_MIX) { 169 AudioSystem::acquireAudioSessionId(mSessionId, mClientPid); 170 } 171 172 return mStatus; 173 } 174 175 176 AudioEffect::~AudioEffect() 177 { 178 ALOGV("Destructor %p", this); 179 180 if (mStatus == NO_ERROR || mStatus == ALREADY_EXISTS) { 181 if (mSessionId > AUDIO_SESSION_OUTPUT_MIX) { 182 AudioSystem::releaseAudioSessionId(mSessionId, mClientPid); 183 } 184 if (mIEffect != NULL) { 185 mIEffect->disconnect(); 186 IInterface::asBinder(mIEffect)->unlinkToDeath(mIEffectClient); 187 } 188 mIEffect.clear(); 189 mCblkMemory.clear(); 190 mIEffectClient.clear(); 191 IPCThreadState::self()->flushCommands(); 192 } 193 } 194 195 196 status_t AudioEffect::initCheck() const 197 { 198 return mStatus; 199 } 200 201 // ------------------------------------------------------------------------- 202 203 effect_descriptor_t AudioEffect::descriptor() const 204 { 205 return mDescriptor; 206 } 207 208 bool AudioEffect::getEnabled() const 209 { 210 return (mEnabled != 0); 211 } 212 213 status_t AudioEffect::setEnabled(bool enabled) 214 { 215 if (mStatus != NO_ERROR) { 216 return (mStatus == ALREADY_EXISTS) ? (status_t) INVALID_OPERATION : mStatus; 217 } 218 219 status_t status = NO_ERROR; 220 221 AutoMutex lock(mLock); 222 if (enabled != mEnabled) { 223 if (enabled) { 224 ALOGV("enable %p", this); 225 status = mIEffect->enable(); 226 } else { 227 ALOGV("disable %p", this); 228 status = mIEffect->disable(); 229 } 230 if (status == NO_ERROR) { 231 mEnabled = enabled; 232 } 233 } 234 return status; 235 } 236 237 status_t AudioEffect::command(uint32_t cmdCode, 238 uint32_t cmdSize, 239 void *cmdData, 240 uint32_t *replySize, 241 void *replyData) 242 { 243 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 244 ALOGV("command() bad status %d", mStatus); 245 return mStatus; 246 } 247 248 if (cmdCode == EFFECT_CMD_ENABLE || cmdCode == EFFECT_CMD_DISABLE) { 249 if (mEnabled == (cmdCode == EFFECT_CMD_ENABLE)) { 250 return NO_ERROR; 251 } 252 if (replySize == NULL || *replySize != sizeof(status_t) || replyData == NULL) { 253 return BAD_VALUE; 254 } 255 mLock.lock(); 256 } 257 258 status_t status = mIEffect->command(cmdCode, cmdSize, cmdData, replySize, replyData); 259 260 if (cmdCode == EFFECT_CMD_ENABLE || cmdCode == EFFECT_CMD_DISABLE) { 261 if (status == NO_ERROR) { 262 status = *(status_t *)replyData; 263 } 264 if (status == NO_ERROR) { 265 mEnabled = (cmdCode == EFFECT_CMD_ENABLE); 266 } 267 mLock.unlock(); 268 } 269 270 return status; 271 } 272 273 274 status_t AudioEffect::setParameter(effect_param_t *param) 275 { 276 if (mStatus != NO_ERROR) { 277 return (mStatus == ALREADY_EXISTS) ? (status_t) INVALID_OPERATION : mStatus; 278 } 279 280 if (param == NULL || param->psize == 0 || param->vsize == 0) { 281 return BAD_VALUE; 282 } 283 284 uint32_t size = sizeof(int); 285 uint32_t psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 286 287 ALOGV("setParameter: param: %d, param2: %d", *(int *)param->data, 288 (param->psize == 8) ? *((int *)param->data + 1): -1); 289 290 return mIEffect->command(EFFECT_CMD_SET_PARAM, sizeof (effect_param_t) + psize, param, &size, 291 ¶m->status); 292 } 293 294 status_t AudioEffect::setParameterDeferred(effect_param_t *param) 295 { 296 if (mStatus != NO_ERROR) { 297 return (mStatus == ALREADY_EXISTS) ? (status_t) INVALID_OPERATION : mStatus; 298 } 299 300 if (param == NULL || param->psize == 0 || param->vsize == 0) { 301 return BAD_VALUE; 302 } 303 304 Mutex::Autolock _l(mCblk->lock); 305 306 int psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 307 int size = ((sizeof(effect_param_t) + psize - 1) / sizeof(int) + 1) * sizeof(int); 308 309 if (mCblk->clientIndex + size > EFFECT_PARAM_BUFFER_SIZE) { 310 return NO_MEMORY; 311 } 312 int *p = (int *)(mCblk->buffer + mCblk->clientIndex); 313 *p++ = size; 314 memcpy(p, param, sizeof(effect_param_t) + psize); 315 mCblk->clientIndex += size; 316 317 return NO_ERROR; 318 } 319 320 status_t AudioEffect::setParameterCommit() 321 { 322 if (mStatus != NO_ERROR) { 323 return (mStatus == ALREADY_EXISTS) ? (status_t) INVALID_OPERATION : mStatus; 324 } 325 326 Mutex::Autolock _l(mCblk->lock); 327 if (mCblk->clientIndex == 0) { 328 return INVALID_OPERATION; 329 } 330 uint32_t size = 0; 331 return mIEffect->command(EFFECT_CMD_SET_PARAM_COMMIT, 0, NULL, &size, NULL); 332 } 333 334 status_t AudioEffect::getParameter(effect_param_t *param) 335 { 336 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 337 return mStatus; 338 } 339 340 if (param == NULL || param->psize == 0 || param->vsize == 0) { 341 return BAD_VALUE; 342 } 343 344 ALOGV("getParameter: param: %d, param2: %d", *(int *)param->data, 345 (param->psize == 8) ? *((int *)param->data + 1): -1); 346 347 uint32_t psize = sizeof(effect_param_t) + ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + 348 param->vsize; 349 350 return mIEffect->command(EFFECT_CMD_GET_PARAM, sizeof(effect_param_t) + param->psize, param, 351 &psize, param); 352 } 353 354 355 // ------------------------------------------------------------------------- 356 357 void AudioEffect::binderDied() 358 { 359 ALOGW("IEffect died"); 360 mStatus = DEAD_OBJECT; 361 if (mCbf != NULL) { 362 status_t status = DEAD_OBJECT; 363 mCbf(EVENT_ERROR, mUserData, &status); 364 } 365 mIEffect.clear(); 366 } 367 368 // ------------------------------------------------------------------------- 369 370 void AudioEffect::controlStatusChanged(bool controlGranted) 371 { 372 ALOGV("controlStatusChanged %p control %d callback %p mUserData %p", this, controlGranted, mCbf, 373 mUserData); 374 if (controlGranted) { 375 if (mStatus == ALREADY_EXISTS) { 376 mStatus = NO_ERROR; 377 } 378 } else { 379 if (mStatus == NO_ERROR) { 380 mStatus = ALREADY_EXISTS; 381 } 382 } 383 if (mCbf != NULL) { 384 mCbf(EVENT_CONTROL_STATUS_CHANGED, mUserData, &controlGranted); 385 } 386 } 387 388 void AudioEffect::enableStatusChanged(bool enabled) 389 { 390 ALOGV("enableStatusChanged %p enabled %d mCbf %p", this, enabled, mCbf); 391 if (mStatus == ALREADY_EXISTS) { 392 mEnabled = enabled; 393 if (mCbf != NULL) { 394 mCbf(EVENT_ENABLE_STATUS_CHANGED, mUserData, &enabled); 395 } 396 } 397 } 398 399 void AudioEffect::commandExecuted(uint32_t cmdCode, 400 uint32_t cmdSize __unused, 401 void *cmdData, 402 uint32_t replySize __unused, 403 void *replyData) 404 { 405 if (cmdData == NULL || replyData == NULL) { 406 return; 407 } 408 409 if (mCbf != NULL && cmdCode == EFFECT_CMD_SET_PARAM) { 410 effect_param_t *cmd = (effect_param_t *)cmdData; 411 cmd->status = *(int32_t *)replyData; 412 mCbf(EVENT_PARAMETER_CHANGED, mUserData, cmd); 413 } 414 } 415 416 // ------------------------------------------------------------------------- 417 418 status_t AudioEffect::queryNumberEffects(uint32_t *numEffects) 419 { 420 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 421 if (af == 0) return PERMISSION_DENIED; 422 return af->queryNumberEffects(numEffects); 423 } 424 425 status_t AudioEffect::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 426 { 427 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 428 if (af == 0) return PERMISSION_DENIED; 429 return af->queryEffect(index, descriptor); 430 } 431 432 status_t AudioEffect::getEffectDescriptor(const effect_uuid_t *uuid, 433 effect_descriptor_t *descriptor) /*const*/ 434 { 435 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 436 if (af == 0) return PERMISSION_DENIED; 437 return af->getEffectDescriptor(uuid, descriptor); 438 } 439 440 441 status_t AudioEffect::queryDefaultPreProcessing(audio_session_t audioSession, 442 effect_descriptor_t *descriptors, 443 uint32_t *count) 444 { 445 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 446 if (aps == 0) return PERMISSION_DENIED; 447 return aps->queryDefaultPreProcessing(audioSession, descriptors, count); 448 } 449 // ------------------------------------------------------------------------- 450 451 status_t AudioEffect::stringToGuid(const char *str, effect_uuid_t *guid) 452 { 453 if (str == NULL || guid == NULL) { 454 return BAD_VALUE; 455 } 456 457 int tmp[10]; 458 459 if (sscanf(str, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 460 tmp, tmp+1, tmp+2, tmp+3, tmp+4, tmp+5, tmp+6, tmp+7, tmp+8, tmp+9) < 10) { 461 return BAD_VALUE; 462 } 463 guid->timeLow = (uint32_t)tmp[0]; 464 guid->timeMid = (uint16_t)tmp[1]; 465 guid->timeHiAndVersion = (uint16_t)tmp[2]; 466 guid->clockSeq = (uint16_t)tmp[3]; 467 guid->node[0] = (uint8_t)tmp[4]; 468 guid->node[1] = (uint8_t)tmp[5]; 469 guid->node[2] = (uint8_t)tmp[6]; 470 guid->node[3] = (uint8_t)tmp[7]; 471 guid->node[4] = (uint8_t)tmp[8]; 472 guid->node[5] = (uint8_t)tmp[9]; 473 474 return NO_ERROR; 475 } 476 477 status_t AudioEffect::guidToString(const effect_uuid_t *guid, char *str, size_t maxLen) 478 { 479 if (guid == NULL || str == NULL) { 480 return BAD_VALUE; 481 } 482 483 snprintf(str, maxLen, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 484 guid->timeLow, 485 guid->timeMid, 486 guid->timeHiAndVersion, 487 guid->clockSeq, 488 guid->node[0], 489 guid->node[1], 490 guid->node[2], 491 guid->node[3], 492 guid->node[4], 493 guid->node[5]); 494 495 return NO_ERROR; 496 } 497 498 499 } // namespace android 500
