AudioEffect.cpp revision a4c72acfbc6c06588dd26cf41e67a834fc0a54f9
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 <cutils/atomic.h> 31#include <binder/IPCThreadState.h> 32 33 34 35namespace android { 36 37// --------------------------------------------------------------------------- 38 39AudioEffect::AudioEffect() 40 : mStatus(NO_INIT) 41{ 42} 43 44 45AudioEffect::AudioEffect(const effect_uuid_t *type, 46 const effect_uuid_t *uuid, 47 int32_t priority, 48 effect_callback_t cbf, 49 void* user, 50 int sessionId, 51 audio_io_handle_t output 52 ) 53 : mStatus(NO_INIT) 54{ 55 mStatus = set(type, uuid, priority, cbf, user, sessionId, output); 56} 57 58AudioEffect::AudioEffect(const char *typeStr, 59 const char *uuidStr, 60 int32_t priority, 61 effect_callback_t cbf, 62 void* user, 63 int sessionId, 64 audio_io_handle_t output 65 ) 66 : mStatus(NO_INIT) 67{ 68 effect_uuid_t type; 69 effect_uuid_t *pType = NULL; 70 effect_uuid_t uuid; 71 effect_uuid_t *pUuid = NULL; 72 73 LOGV("Constructor string\n - type: %s\n - uuid: %s", typeStr, uuidStr); 74 75 if (typeStr != NULL) { 76 if (stringToGuid(typeStr, &type) == NO_ERROR) { 77 pType = &type; 78 } 79 } 80 81 if (uuidStr != NULL) { 82 if (stringToGuid(uuidStr, &uuid) == NO_ERROR) { 83 pUuid = &uuid; 84 } 85 } 86 87 mStatus = set(pType, pUuid, priority, cbf, user, sessionId, output); 88} 89 90status_t AudioEffect::set(const effect_uuid_t *type, 91 const effect_uuid_t *uuid, 92 int32_t priority, 93 effect_callback_t cbf, 94 void* user, 95 int sessionId, 96 audio_io_handle_t output) 97{ 98 sp<IEffect> iEffect; 99 sp<IMemory> cblk; 100 int enabled; 101 102 LOGV("set %p mUserData: %p", this, user); 103 104 if (mIEffect != 0) { 105 LOGW("Effect already in use"); 106 return INVALID_OPERATION; 107 } 108 109 const sp<IAudioFlinger>& audioFlinger = AudioSystem::get_audio_flinger(); 110 if (audioFlinger == 0) { 111 LOGE("set(): Could not get audioflinger"); 112 return NO_INIT; 113 } 114 115 if (type == NULL && uuid == NULL) { 116 LOGW("Must specify at least type or uuid"); 117 return BAD_VALUE; 118 } 119 120 mPriority = priority; 121 mCbf = cbf; 122 mUserData = user; 123 mSessionId = sessionId; 124 125 memset(&mDescriptor, 0, sizeof(effect_descriptor_t)); 126 memcpy(&mDescriptor.type, EFFECT_UUID_NULL, sizeof(effect_uuid_t)); 127 memcpy(&mDescriptor.uuid, EFFECT_UUID_NULL, sizeof(effect_uuid_t)); 128 129 if (type != NULL) { 130 memcpy(&mDescriptor.type, type, sizeof(effect_uuid_t)); 131 } 132 if (uuid != NULL) { 133 memcpy(&mDescriptor.uuid, uuid, sizeof(effect_uuid_t)); 134 } 135 136 mIEffectClient = new EffectClient(this); 137 138 iEffect = audioFlinger->createEffect(getpid(), (effect_descriptor_t *)&mDescriptor, 139 mIEffectClient, priority, output, mSessionId, &mStatus, &mId, &enabled); 140 141 if (iEffect == 0 || (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS)) { 142 LOGE("set(): AudioFlinger could not create effect, status: %d", mStatus); 143 return mStatus; 144 } 145 146 mEnabled = (volatile int32_t)enabled; 147 148 mIEffect = iEffect; 149 cblk = iEffect->getCblk(); 150 if (cblk == 0) { 151 mStatus = NO_INIT; 152 LOGE("Could not get control block"); 153 return mStatus; 154 } 155 156 mIEffect = iEffect; 157 mCblkMemory = cblk; 158 mCblk = static_cast<effect_param_cblk_t*>(cblk->pointer()); 159 int bufOffset = ((sizeof(effect_param_cblk_t) - 1) / sizeof(int) + 1) * sizeof(int); 160 mCblk->buffer = (uint8_t *)mCblk + bufOffset; 161 162 iEffect->asBinder()->linkToDeath(mIEffectClient); 163 LOGV("set() %p OK effect: %s id: %d status %d enabled %d, ", this, mDescriptor.name, mId, mStatus, mEnabled); 164 165 return mStatus; 166} 167 168 169AudioEffect::~AudioEffect() 170{ 171 LOGV("Destructor %p", this); 172 173 if (mStatus == NO_ERROR || mStatus == ALREADY_EXISTS) { 174 setEnabled(false); 175 if (mIEffect != NULL) { 176 mIEffect->disconnect(); 177 mIEffect->asBinder()->unlinkToDeath(mIEffectClient); 178 } 179 IPCThreadState::self()->flushCommands(); 180 } 181 mIEffect.clear(); 182 mIEffectClient.clear(); 183 mCblkMemory.clear(); 184} 185 186 187status_t AudioEffect::initCheck() const 188{ 189 return mStatus; 190} 191 192// ------------------------------------------------------------------------- 193 194effect_descriptor_t AudioEffect::descriptor() const 195{ 196 return mDescriptor; 197} 198 199bool AudioEffect::getEnabled() const 200{ 201 return (mEnabled != 0); 202} 203 204status_t AudioEffect::setEnabled(bool enabled) 205{ 206 if (mStatus != NO_ERROR) { 207 return INVALID_OPERATION; 208 } 209 210 if (enabled) { 211 LOGV("enable %p", this); 212 if (android_atomic_or(1, &mEnabled) == 0) { 213 return mIEffect->enable(); 214 } 215 } else { 216 LOGV("disable %p", this); 217 if (android_atomic_and(~1, &mEnabled) == 1) { 218 return mIEffect->disable(); 219 } 220 } 221 return INVALID_OPERATION; 222} 223 224status_t AudioEffect::command(uint32_t cmdCode, 225 uint32_t cmdSize, 226 void *cmdData, 227 uint32_t *replySize, 228 void *replyData) 229{ 230 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 231 return INVALID_OPERATION; 232 } 233 234 return mIEffect->command(cmdCode, cmdSize, cmdData, replySize, replyData); 235} 236 237 238status_t AudioEffect::setParameter(effect_param_t *param) 239{ 240 if (mStatus != NO_ERROR) { 241 return INVALID_OPERATION; 242 } 243 244 if (param == NULL || param->psize == 0 || param->vsize == 0) { 245 return BAD_VALUE; 246 } 247 248 uint32_t size = sizeof(int); 249 uint32_t psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 250 251 LOGV("setParameter: param: %d, param2: %d", *(int *)param->data, (param->psize == 8) ? *((int *)param->data + 1): -1); 252 253 return mIEffect->command(EFFECT_CMD_SET_PARAM, sizeof (effect_param_t) + psize, param, &size, ¶m->status); 254} 255 256status_t AudioEffect::setParameterDeferred(effect_param_t *param) 257{ 258 if (mStatus != NO_ERROR) { 259 return INVALID_OPERATION; 260 } 261 262 if (param == NULL || param->psize == 0 || param->vsize == 0) { 263 return BAD_VALUE; 264 } 265 266 Mutex::Autolock _l(mCblk->lock); 267 268 int psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 269 int size = ((sizeof(effect_param_t) + psize - 1) / sizeof(int) + 1) * sizeof(int); 270 271 if (mCblk->clientIndex + size > EFFECT_PARAM_BUFFER_SIZE) { 272 return NO_MEMORY; 273 } 274 int *p = (int *)(mCblk->buffer + mCblk->clientIndex); 275 *p++ = size; 276 memcpy(p, param, sizeof(effect_param_t) + psize); 277 mCblk->clientIndex += size; 278 279 return NO_ERROR; 280} 281 282status_t AudioEffect::setParameterCommit() 283{ 284 if (mStatus != NO_ERROR) { 285 return INVALID_OPERATION; 286 } 287 288 Mutex::Autolock _l(mCblk->lock); 289 if (mCblk->clientIndex == 0) { 290 return INVALID_OPERATION; 291 } 292 uint32_t size = 0; 293 return mIEffect->command(EFFECT_CMD_SET_PARAM_COMMIT, 0, NULL, &size, NULL); 294} 295 296status_t AudioEffect::getParameter(effect_param_t *param) 297{ 298 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 299 return INVALID_OPERATION; 300 } 301 302 if (param == NULL || param->psize == 0 || param->vsize == 0) { 303 return BAD_VALUE; 304 } 305 306 LOGV("getParameter: param: %d, param2: %d", *(int *)param->data, (param->psize == 8) ? *((int *)param->data + 1): -1); 307 308 uint32_t psize = sizeof(effect_param_t) + ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 309 310 return mIEffect->command(EFFECT_CMD_GET_PARAM, sizeof(effect_param_t) + param->psize, param, &psize, param); 311} 312 313 314// ------------------------------------------------------------------------- 315 316void AudioEffect::binderDied() 317{ 318 LOGW("IEffect died"); 319 mStatus = NO_INIT; 320 if (mCbf) { 321 status_t status = DEAD_OBJECT; 322 mCbf(EVENT_ERROR, mUserData, &status); 323 } 324 mIEffect.clear(); 325} 326 327// ------------------------------------------------------------------------- 328 329void AudioEffect::controlStatusChanged(bool controlGranted) 330{ 331 LOGV("controlStatusChanged %p control %d callback %p mUserData %p", this, controlGranted, mCbf, mUserData); 332 if (controlGranted) { 333 if (mStatus == ALREADY_EXISTS) { 334 mStatus = NO_ERROR; 335 } 336 } else { 337 if (mStatus == NO_ERROR) { 338 mStatus = ALREADY_EXISTS; 339 } 340 } 341 if (mCbf) { 342 mCbf(EVENT_CONTROL_STATUS_CHANGED, mUserData, &controlGranted); 343 } 344} 345 346void AudioEffect::enableStatusChanged(bool enabled) 347{ 348 LOGV("enableStatusChanged %p enabled %d mCbf %p", this, enabled, mCbf); 349 if (mStatus == ALREADY_EXISTS) { 350 mEnabled = enabled; 351 if (mCbf) { 352 mCbf(EVENT_ENABLE_STATUS_CHANGED, mUserData, &enabled); 353 } 354 } 355} 356 357void AudioEffect::commandExecuted(uint32_t cmdCode, 358 uint32_t cmdSize, 359 void *cmdData, 360 uint32_t replySize, 361 void *replyData) 362{ 363 if (cmdData == NULL || replyData == NULL) { 364 return; 365 } 366 367 if (mCbf && cmdCode == EFFECT_CMD_SET_PARAM) { 368 effect_param_t *cmd = (effect_param_t *)cmdData; 369 cmd->status = *(int32_t *)replyData; 370 mCbf(EVENT_PARAMETER_CHANGED, mUserData, cmd); 371 } 372} 373 374// ------------------------------------------------------------------------- 375 376status_t AudioEffect::loadEffectLibrary(const char *libPath, int *handle) 377{ 378 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 379 if (af == 0) return PERMISSION_DENIED; 380 return af->loadEffectLibrary(libPath, handle); 381} 382 383status_t AudioEffect::unloadEffectLibrary(int handle) 384{ 385 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 386 if (af == 0) return PERMISSION_DENIED; 387 return af->unloadEffectLibrary(handle); 388} 389 390status_t AudioEffect::queryNumberEffects(uint32_t *numEffects) 391{ 392 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 393 if (af == 0) return PERMISSION_DENIED; 394 return af->queryNumberEffects(numEffects); 395} 396 397status_t AudioEffect::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 398{ 399 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 400 if (af == 0) return PERMISSION_DENIED; 401 return af->queryEffect(index, descriptor); 402} 403 404status_t AudioEffect::getEffectDescriptor(effect_uuid_t *uuid, effect_descriptor_t *descriptor) 405{ 406 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 407 if (af == 0) return PERMISSION_DENIED; 408 return af->getEffectDescriptor(uuid, descriptor); 409} 410 411// ------------------------------------------------------------------------- 412 413status_t AudioEffect::stringToGuid(const char *str, effect_uuid_t *guid) 414{ 415 if (str == NULL || guid == NULL) { 416 return BAD_VALUE; 417 } 418 419 int tmp[10]; 420 421 if (sscanf(str, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 422 tmp, tmp+1, tmp+2, tmp+3, tmp+4, tmp+5, tmp+6, tmp+7, tmp+8, tmp+9) < 10) { 423 return BAD_VALUE; 424 } 425 guid->timeLow = (uint32_t)tmp[0]; 426 guid->timeMid = (uint16_t)tmp[1]; 427 guid->timeHiAndVersion = (uint16_t)tmp[2]; 428 guid->clockSeq = (uint16_t)tmp[3]; 429 guid->node[0] = (uint8_t)tmp[4]; 430 guid->node[1] = (uint8_t)tmp[5]; 431 guid->node[2] = (uint8_t)tmp[6]; 432 guid->node[3] = (uint8_t)tmp[7]; 433 guid->node[4] = (uint8_t)tmp[8]; 434 guid->node[5] = (uint8_t)tmp[9]; 435 436 return NO_ERROR; 437} 438 439status_t AudioEffect::guidToString(const effect_uuid_t *guid, char *str, size_t maxLen) 440{ 441 if (guid == NULL || str == NULL) { 442 return BAD_VALUE; 443 } 444 445 snprintf(str, maxLen, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 446 guid->timeLow, 447 guid->timeMid, 448 guid->timeHiAndVersion, 449 guid->clockSeq, 450 guid->node[0], 451 guid->node[1], 452 guid->node[2], 453 guid->node[3], 454 guid->node[4], 455 guid->node[5]); 456 457 return NO_ERROR; 458} 459 460 461}; // namespace android 462 463