AudioEffect.cpp revision 42a050ff9636b79e4b91297cc41028ffd62240d5
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(int32_t cmdCode, int32_t cmdSize, void *cmdData, int32_t *replySize, void *replyData) 225{ 226 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 227 return INVALID_OPERATION; 228 } 229 230 return mIEffect->command(cmdCode, cmdSize, cmdData, replySize, replyData); 231} 232 233 234status_t AudioEffect::setParameter(effect_param_t *param) 235{ 236 if (mStatus != NO_ERROR) { 237 return INVALID_OPERATION; 238 } 239 240 if (param == NULL || param->psize == 0 || param->vsize == 0) { 241 return BAD_VALUE; 242 } 243 244 int size = sizeof(int); 245 int psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 246 247 LOGV("setParameter: param: %d, param2: %d", *(int *)param->data, (param->psize == 8) ? *((int *)param->data + 1): -1); 248 249 return mIEffect->command(EFFECT_CMD_SET_PARAM, sizeof (effect_param_t) + psize, param, &size, ¶m->status); 250} 251 252status_t AudioEffect::setParameterDeferred(effect_param_t *param) 253{ 254 if (mStatus != NO_ERROR) { 255 return INVALID_OPERATION; 256 } 257 258 if (param == NULL || param->psize == 0 || param->vsize == 0) { 259 return BAD_VALUE; 260 } 261 262 Mutex::Autolock _l(mCblk->lock); 263 264 int psize = ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 265 int size = ((sizeof(effect_param_t) + psize - 1) / sizeof(int) + 1) * sizeof(int); 266 267 if (mCblk->clientIndex + size > EFFECT_PARAM_BUFFER_SIZE) { 268 return NO_MEMORY; 269 } 270 int *p = (int *)(mCblk->buffer + mCblk->clientIndex); 271 *p++ = size; 272 memcpy(p, param, sizeof(effect_param_t) + psize); 273 mCblk->clientIndex += size; 274 275 return NO_ERROR; 276} 277 278status_t AudioEffect::setParameterCommit() 279{ 280 if (mStatus != NO_ERROR) { 281 return INVALID_OPERATION; 282 } 283 284 Mutex::Autolock _l(mCblk->lock); 285 if (mCblk->clientIndex == 0) { 286 return INVALID_OPERATION; 287 } 288 int size = 0; 289 return mIEffect->command(EFFECT_CMD_SET_PARAM_COMMIT, 0, NULL, &size, NULL); 290} 291 292status_t AudioEffect::getParameter(effect_param_t *param) 293{ 294 if (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS) { 295 return INVALID_OPERATION; 296 } 297 298 if (param == NULL || param->psize == 0 || param->vsize == 0) { 299 return BAD_VALUE; 300 } 301 302 LOGV("getParameter: param: %d, param2: %d", *(int *)param->data, (param->psize == 8) ? *((int *)param->data + 1): -1); 303 304 int psize = sizeof(effect_param_t) + ((param->psize - 1) / sizeof(int) + 1) * sizeof(int) + param->vsize; 305 306 return mIEffect->command(EFFECT_CMD_GET_PARAM, sizeof(effect_param_t) + param->psize, param, &psize, param); 307} 308 309 310// ------------------------------------------------------------------------- 311 312void AudioEffect::binderDied() 313{ 314 LOGW("IEffect died"); 315 mStatus = NO_INIT; 316 if (mCbf) { 317 status_t status = DEAD_OBJECT; 318 mCbf(EVENT_ERROR, mUserData, &status); 319 } 320 mIEffect.clear(); 321} 322 323// ------------------------------------------------------------------------- 324 325void AudioEffect::controlStatusChanged(bool controlGranted) 326{ 327 LOGV("controlStatusChanged %p control %d callback %p mUserData %p", this, controlGranted, mCbf, mUserData); 328 if (controlGranted) { 329 if (mStatus == ALREADY_EXISTS) { 330 mStatus = NO_ERROR; 331 } 332 } else { 333 if (mStatus == NO_ERROR) { 334 mStatus = ALREADY_EXISTS; 335 } 336 } 337 if (mCbf) { 338 mCbf(EVENT_CONTROL_STATUS_CHANGED, mUserData, &controlGranted); 339 } 340} 341 342void AudioEffect::enableStatusChanged(bool enabled) 343{ 344 LOGV("enableStatusChanged %p enabled %d mCbf %p", this, enabled, mCbf); 345 if (mStatus == ALREADY_EXISTS) { 346 mEnabled = enabled; 347 if (mCbf) { 348 mCbf(EVENT_ENABLE_STATUS_CHANGED, mUserData, &enabled); 349 } 350 } 351} 352 353void AudioEffect::commandExecuted(int cmdCode, int cmdSize, void *cmdData, int replySize, void *replyData) 354{ 355 if (cmdData == NULL || replyData == NULL) { 356 return; 357 } 358 359 if (mCbf && cmdCode == EFFECT_CMD_SET_PARAM) { 360 effect_param_t *cmd = (effect_param_t *)cmdData; 361 cmd->status = *(int32_t *)replyData; 362 mCbf(EVENT_PARAMETER_CHANGED, mUserData, cmd); 363 } 364} 365 366// ------------------------------------------------------------------------- 367 368status_t AudioEffect::loadEffectLibrary(const char *libPath, int *handle) 369{ 370 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 371 if (af == 0) return PERMISSION_DENIED; 372 return af->loadEffectLibrary(libPath, handle); 373} 374 375status_t AudioEffect::unloadEffectLibrary(int handle) 376{ 377 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 378 if (af == 0) return PERMISSION_DENIED; 379 return af->unloadEffectLibrary(handle); 380} 381 382status_t AudioEffect::queryNumberEffects(uint32_t *numEffects) 383{ 384 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 385 if (af == 0) return PERMISSION_DENIED; 386 return af->queryNumberEffects(numEffects); 387} 388 389status_t AudioEffect::queryEffect(uint32_t index, effect_descriptor_t *descriptor) 390{ 391 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 392 if (af == 0) return PERMISSION_DENIED; 393 return af->queryEffect(index, descriptor); 394} 395 396status_t AudioEffect::getEffectDescriptor(effect_uuid_t *uuid, effect_descriptor_t *descriptor) 397{ 398 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 399 if (af == 0) return PERMISSION_DENIED; 400 return af->getEffectDescriptor(uuid, descriptor); 401} 402 403// ------------------------------------------------------------------------- 404 405status_t AudioEffect::stringToGuid(const char *str, effect_uuid_t *guid) 406{ 407 if (str == NULL || guid == NULL) { 408 return BAD_VALUE; 409 } 410 411 int tmp[10]; 412 413 if (sscanf(str, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 414 tmp, tmp+1, tmp+2, tmp+3, tmp+4, tmp+5, tmp+6, tmp+7, tmp+8, tmp+9) < 10) { 415 return BAD_VALUE; 416 } 417 guid->timeLow = (uint32_t)tmp[0]; 418 guid->timeMid = (uint16_t)tmp[1]; 419 guid->timeHiAndVersion = (uint16_t)tmp[2]; 420 guid->clockSeq = (uint16_t)tmp[3]; 421 guid->node[0] = (uint8_t)tmp[4]; 422 guid->node[1] = (uint8_t)tmp[5]; 423 guid->node[2] = (uint8_t)tmp[6]; 424 guid->node[3] = (uint8_t)tmp[7]; 425 guid->node[4] = (uint8_t)tmp[8]; 426 guid->node[5] = (uint8_t)tmp[9]; 427 428 return NO_ERROR; 429} 430 431status_t AudioEffect::guidToString(const effect_uuid_t *guid, char *str, size_t maxLen) 432{ 433 if (guid == NULL || str == NULL) { 434 return BAD_VALUE; 435 } 436 437 snprintf(str, maxLen, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", 438 guid->timeLow, 439 guid->timeMid, 440 guid->timeHiAndVersion, 441 guid->clockSeq, 442 guid->node[0], 443 guid->node[1], 444 guid->node[2], 445 guid->node[3], 446 guid->node[4], 447 guid->node[5]); 448 449 return NO_ERROR; 450} 451 452 453}; // namespace android 454 455