1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 #ifndef ANDROID_AUDIO_EFFECT_H 19 #define ANDROID_AUDIO_EFFECT_H 20 21 #include <errno.h> 22 #include <stdint.h> 23 #include <strings.h> 24 #include <sys/cdefs.h> 25 #include <sys/types.h> 26 27 #include <cutils/bitops.h> 28 29 #include <system/audio.h> 30 31 32 __BEGIN_DECLS 33 34 35 ///////////////////////////////////////////////// 36 // Common Definitions 37 ///////////////////////////////////////////////// 38 39 // 40 //--- Effect descriptor structure effect_descriptor_t 41 // 42 43 // Unique effect ID (can be generated from the following site: 44 // http://www.itu.int/ITU-T/asn1/uuid.html) 45 // This format is used for both "type" and "uuid" fields of the effect descriptor structure. 46 // - When used for effect type and the engine is implementing and effect corresponding to a standard 47 // OpenSL ES interface, this ID must be the one defined in OpenSLES_IID.h for that interface. 48 // - When used as uuid, it should be a unique UUID for this particular implementation. 49 typedef struct effect_uuid_s { 50 uint32_t timeLow; 51 uint16_t timeMid; 52 uint16_t timeHiAndVersion; 53 uint16_t clockSeq; 54 uint8_t node[6]; 55 } effect_uuid_t; 56 57 // Maximum length of character strings in structures defines by this API. 58 #define EFFECT_STRING_LEN_MAX 64 59 60 // NULL UUID definition (matches SL_IID_NULL_) 61 #define EFFECT_UUID_INITIALIZER { 0xec7178ec, 0xe5e1, 0x4432, 0xa3f4, \ 62 { 0x46, 0x57, 0xe6, 0x79, 0x52, 0x10 } } 63 static const effect_uuid_t EFFECT_UUID_NULL_ = EFFECT_UUID_INITIALIZER; 64 static const effect_uuid_t * const EFFECT_UUID_NULL = &EFFECT_UUID_NULL_; 65 static const char * const EFFECT_UUID_NULL_STR = "ec7178ec-e5e1-4432-a3f4-4657e6795210"; 66 67 68 // The effect descriptor contains necessary information to facilitate the enumeration of the effect 69 // engines present in a library. 70 typedef struct effect_descriptor_s { 71 effect_uuid_t type; // UUID of to the OpenSL ES interface implemented by this effect 72 effect_uuid_t uuid; // UUID for this particular implementation 73 uint32_t apiVersion; // Version of the effect control API implemented 74 uint32_t flags; // effect engine capabilities/requirements flags (see below) 75 uint16_t cpuLoad; // CPU load indication (see below) 76 uint16_t memoryUsage; // Data Memory usage (see below) 77 char name[EFFECT_STRING_LEN_MAX]; // human readable effect name 78 char implementor[EFFECT_STRING_LEN_MAX]; // human readable effect implementor name 79 } effect_descriptor_t; 80 81 // CPU load and memory usage indication: each effect implementation must provide an indication of 82 // its CPU and memory usage for the audio effect framework to limit the number of effects 83 // instantiated at a given time on a given platform. 84 // The CPU load is expressed in 0.1 MIPS units as estimated on an ARM9E core (ARMv5TE) with 0 WS. 85 // The memory usage is expressed in KB and includes only dynamically allocated memory 86 87 // Definitions for flags field of effect descriptor. 88 // +---------------------------+-----------+----------------------------------- 89 // | description | bits | values 90 // +---------------------------+-----------+----------------------------------- 91 // | connection mode | 0..2 | 0 insert: after track process 92 // | | | 1 auxiliary: connect to track auxiliary 93 // | | | output and use send level 94 // | | | 2 replace: replaces track process function; 95 // | | | must implement SRC, volume and mono to stereo. 96 // | | | 3 pre processing: applied below audio HAL on input 97 // | | | 4 post processing: applied below audio HAL on output 98 // | | | 5 - 7 reserved 99 // +---------------------------+-----------+----------------------------------- 100 // | insertion preference | 3..5 | 0 none 101 // | | | 1 first of the chain 102 // | | | 2 last of the chain 103 // | | | 3 exclusive (only effect in the insert chain) 104 // | | | 4..7 reserved 105 // +---------------------------+-----------+----------------------------------- 106 // | Volume management | 6..8 | 0 none 107 // | | | 1 implements volume control 108 // | | | 2 requires volume indication 109 // | | | 4 reserved 110 // +---------------------------+-----------+----------------------------------- 111 // | Device indication | 9..11 | 0 none 112 // | | | 1 requires device updates 113 // | | | 2, 4 reserved 114 // +---------------------------+-----------+----------------------------------- 115 // | Sample input mode | 12..13 | 1 direct: process() function or EFFECT_CMD_SET_CONFIG 116 // | | | command must specify a buffer descriptor 117 // | | | 2 provider: process() function uses the 118 // | | | bufferProvider indicated by the 119 // | | | EFFECT_CMD_SET_CONFIG command to request input. 120 // | | | buffers. 121 // | | | 3 both: both input modes are supported 122 // +---------------------------+-----------+----------------------------------- 123 // | Sample output mode | 14..15 | 1 direct: process() function or EFFECT_CMD_SET_CONFIG 124 // | | | command must specify a buffer descriptor 125 // | | | 2 provider: process() function uses the 126 // | | | bufferProvider indicated by the 127 // | | | EFFECT_CMD_SET_CONFIG command to request output 128 // | | | buffers. 129 // | | | 3 both: both output modes are supported 130 // +---------------------------+-----------+----------------------------------- 131 // | Hardware acceleration | 16..17 | 0 No hardware acceleration 132 // | | | 1 non tunneled hw acceleration: the process() function 133 // | | | reads the samples, send them to HW accelerated 134 // | | | effect processor, reads back the processed samples 135 // | | | and returns them to the output buffer. 136 // | | | 2 tunneled hw acceleration: the process() function is 137 // | | | transparent. The effect interface is only used to 138 // | | | control the effect engine. This mode is relevant for 139 // | | | global effects actually applied by the audio 140 // | | | hardware on the output stream. 141 // +---------------------------+-----------+----------------------------------- 142 // | Audio Mode indication | 18..19 | 0 none 143 // | | | 1 requires audio mode updates 144 // | | | 2..3 reserved 145 // +---------------------------+-----------+----------------------------------- 146 // | Audio source indication | 20..21 | 0 none 147 // | | | 1 requires audio source updates 148 // | | | 2..3 reserved 149 // +---------------------------+-----------+----------------------------------- 150 // | Effect offload supported | 22 | 0 The effect cannot be offloaded to an audio DSP 151 // | | | 1 The effect can be offloaded to an audio DSP 152 // +---------------------------+-----------+----------------------------------- 153 // | Process function not | 23 | 0 The effect implements a process function. 154 // | implemented | | 1 The effect does not implement a process function: 155 // | | | enabling the effect has no impact on latency or 156 // | | | CPU load. 157 // | | | Effect implementations setting this flag do not have 158 // | | | to implement a process function. 159 // +---------------------------+-----------+----------------------------------- 160 161 // Insert mode 162 #define EFFECT_FLAG_TYPE_SHIFT 0 163 #define EFFECT_FLAG_TYPE_SIZE 3 164 #define EFFECT_FLAG_TYPE_MASK (((1 << EFFECT_FLAG_TYPE_SIZE) -1) \ 165 << EFFECT_FLAG_TYPE_SHIFT) 166 #define EFFECT_FLAG_TYPE_INSERT (0 << EFFECT_FLAG_TYPE_SHIFT) 167 #define EFFECT_FLAG_TYPE_AUXILIARY (1 << EFFECT_FLAG_TYPE_SHIFT) 168 #define EFFECT_FLAG_TYPE_REPLACE (2 << EFFECT_FLAG_TYPE_SHIFT) 169 #define EFFECT_FLAG_TYPE_PRE_PROC (3 << EFFECT_FLAG_TYPE_SHIFT) 170 #define EFFECT_FLAG_TYPE_POST_PROC (4 << EFFECT_FLAG_TYPE_SHIFT) 171 172 // Insert preference 173 #define EFFECT_FLAG_INSERT_SHIFT (EFFECT_FLAG_TYPE_SHIFT + EFFECT_FLAG_TYPE_SIZE) 174 #define EFFECT_FLAG_INSERT_SIZE 3 175 #define EFFECT_FLAG_INSERT_MASK (((1 << EFFECT_FLAG_INSERT_SIZE) -1) \ 176 << EFFECT_FLAG_INSERT_SHIFT) 177 #define EFFECT_FLAG_INSERT_ANY (0 << EFFECT_FLAG_INSERT_SHIFT) 178 #define EFFECT_FLAG_INSERT_FIRST (1 << EFFECT_FLAG_INSERT_SHIFT) 179 #define EFFECT_FLAG_INSERT_LAST (2 << EFFECT_FLAG_INSERT_SHIFT) 180 #define EFFECT_FLAG_INSERT_EXCLUSIVE (3 << EFFECT_FLAG_INSERT_SHIFT) 181 182 183 // Volume control 184 #define EFFECT_FLAG_VOLUME_SHIFT (EFFECT_FLAG_INSERT_SHIFT + EFFECT_FLAG_INSERT_SIZE) 185 #define EFFECT_FLAG_VOLUME_SIZE 3 186 #define EFFECT_FLAG_VOLUME_MASK (((1 << EFFECT_FLAG_VOLUME_SIZE) -1) \ 187 << EFFECT_FLAG_VOLUME_SHIFT) 188 #define EFFECT_FLAG_VOLUME_CTRL (1 << EFFECT_FLAG_VOLUME_SHIFT) 189 #define EFFECT_FLAG_VOLUME_IND (2 << EFFECT_FLAG_VOLUME_SHIFT) 190 #define EFFECT_FLAG_VOLUME_NONE (0 << EFFECT_FLAG_VOLUME_SHIFT) 191 192 // Device indication 193 #define EFFECT_FLAG_DEVICE_SHIFT (EFFECT_FLAG_VOLUME_SHIFT + EFFECT_FLAG_VOLUME_SIZE) 194 #define EFFECT_FLAG_DEVICE_SIZE 3 195 #define EFFECT_FLAG_DEVICE_MASK (((1 << EFFECT_FLAG_DEVICE_SIZE) -1) \ 196 << EFFECT_FLAG_DEVICE_SHIFT) 197 #define EFFECT_FLAG_DEVICE_IND (1 << EFFECT_FLAG_DEVICE_SHIFT) 198 #define EFFECT_FLAG_DEVICE_NONE (0 << EFFECT_FLAG_DEVICE_SHIFT) 199 200 // Sample input modes 201 #define EFFECT_FLAG_INPUT_SHIFT (EFFECT_FLAG_DEVICE_SHIFT + EFFECT_FLAG_DEVICE_SIZE) 202 #define EFFECT_FLAG_INPUT_SIZE 2 203 #define EFFECT_FLAG_INPUT_MASK (((1 << EFFECT_FLAG_INPUT_SIZE) -1) \ 204 << EFFECT_FLAG_INPUT_SHIFT) 205 #define EFFECT_FLAG_INPUT_DIRECT (1 << EFFECT_FLAG_INPUT_SHIFT) 206 #define EFFECT_FLAG_INPUT_PROVIDER (2 << EFFECT_FLAG_INPUT_SHIFT) 207 #define EFFECT_FLAG_INPUT_BOTH (3 << EFFECT_FLAG_INPUT_SHIFT) 208 209 // Sample output modes 210 #define EFFECT_FLAG_OUTPUT_SHIFT (EFFECT_FLAG_INPUT_SHIFT + EFFECT_FLAG_INPUT_SIZE) 211 #define EFFECT_FLAG_OUTPUT_SIZE 2 212 #define EFFECT_FLAG_OUTPUT_MASK (((1 << EFFECT_FLAG_OUTPUT_SIZE) -1) \ 213 << EFFECT_FLAG_OUTPUT_SHIFT) 214 #define EFFECT_FLAG_OUTPUT_DIRECT (1 << EFFECT_FLAG_OUTPUT_SHIFT) 215 #define EFFECT_FLAG_OUTPUT_PROVIDER (2 << EFFECT_FLAG_OUTPUT_SHIFT) 216 #define EFFECT_FLAG_OUTPUT_BOTH (3 << EFFECT_FLAG_OUTPUT_SHIFT) 217 218 // Hardware acceleration mode 219 #define EFFECT_FLAG_HW_ACC_SHIFT (EFFECT_FLAG_OUTPUT_SHIFT + EFFECT_FLAG_OUTPUT_SIZE) 220 #define EFFECT_FLAG_HW_ACC_SIZE 2 221 #define EFFECT_FLAG_HW_ACC_MASK (((1 << EFFECT_FLAG_HW_ACC_SIZE) -1) \ 222 << EFFECT_FLAG_HW_ACC_SHIFT) 223 #define EFFECT_FLAG_HW_ACC_SIMPLE (1 << EFFECT_FLAG_HW_ACC_SHIFT) 224 #define EFFECT_FLAG_HW_ACC_TUNNEL (2 << EFFECT_FLAG_HW_ACC_SHIFT) 225 226 // Audio mode indication 227 #define EFFECT_FLAG_AUDIO_MODE_SHIFT (EFFECT_FLAG_HW_ACC_SHIFT + EFFECT_FLAG_HW_ACC_SIZE) 228 #define EFFECT_FLAG_AUDIO_MODE_SIZE 2 229 #define EFFECT_FLAG_AUDIO_MODE_MASK (((1 << EFFECT_FLAG_AUDIO_MODE_SIZE) -1) \ 230 << EFFECT_FLAG_AUDIO_MODE_SHIFT) 231 #define EFFECT_FLAG_AUDIO_MODE_IND (1 << EFFECT_FLAG_AUDIO_MODE_SHIFT) 232 #define EFFECT_FLAG_AUDIO_MODE_NONE (0 << EFFECT_FLAG_AUDIO_MODE_SHIFT) 233 234 // Audio source indication 235 #define EFFECT_FLAG_AUDIO_SOURCE_SHIFT (EFFECT_FLAG_AUDIO_MODE_SHIFT + EFFECT_FLAG_AUDIO_MODE_SIZE) 236 #define EFFECT_FLAG_AUDIO_SOURCE_SIZE 2 237 #define EFFECT_FLAG_AUDIO_SOURCE_MASK (((1 << EFFECT_FLAG_AUDIO_SOURCE_SIZE) -1) \ 238 << EFFECT_FLAG_AUDIO_SOURCE_SHIFT) 239 #define EFFECT_FLAG_AUDIO_SOURCE_IND (1 << EFFECT_FLAG_AUDIO_SOURCE_SHIFT) 240 #define EFFECT_FLAG_AUDIO_SOURCE_NONE (0 << EFFECT_FLAG_AUDIO_SOURCE_SHIFT) 241 242 // Effect offload indication 243 #define EFFECT_FLAG_OFFLOAD_SHIFT (EFFECT_FLAG_AUDIO_SOURCE_SHIFT + \ 244 EFFECT_FLAG_AUDIO_SOURCE_SIZE) 245 #define EFFECT_FLAG_OFFLOAD_SIZE 1 246 #define EFFECT_FLAG_OFFLOAD_MASK (((1 << EFFECT_FLAG_OFFLOAD_SIZE) -1) \ 247 << EFFECT_FLAG_OFFLOAD_SHIFT) 248 #define EFFECT_FLAG_OFFLOAD_SUPPORTED (1 << EFFECT_FLAG_OFFLOAD_SHIFT) 249 250 // Effect has no process indication 251 #define EFFECT_FLAG_NO_PROCESS_SHIFT (EFFECT_FLAG_OFFLOAD_SHIFT + \ 252 EFFECT_FLAG_OFFLOAD_SIZE) 253 #define EFFECT_FLAG_NO_PROCESS_SIZE 1 254 #define EFFECT_FLAG_NO_PROCESS_MASK (((1 << EFFECT_FLAG_NO_PROCESS_SIZE) -1) \ 255 << EFFECT_FLAG_NO_PROCESS_SHIFT) 256 #define EFFECT_FLAG_NO_PROCESS (1 << EFFECT_FLAG_NO_PROCESS_SHIFT) 257 258 #define EFFECT_MAKE_API_VERSION(M, m) (((M)<<16) | ((m) & 0xFFFF)) 259 #define EFFECT_API_VERSION_MAJOR(v) ((v)>>16) 260 #define EFFECT_API_VERSION_MINOR(v) ((m) & 0xFFFF) 261 262 263 264 ///////////////////////////////////////////////// 265 // Effect control interface 266 ///////////////////////////////////////////////// 267 268 // Effect control interface version 2.0 269 #define EFFECT_CONTROL_API_VERSION EFFECT_MAKE_API_VERSION(2,0) 270 271 // Effect control interface structure: effect_interface_s 272 // The effect control interface is exposed by each effect engine implementation. It consists of 273 // a set of functions controlling the configuration, activation and process of the engine. 274 // The functions are grouped in a structure of type effect_interface_s. 275 // 276 // Effect control interface handle: effect_handle_t 277 // The effect_handle_t serves two purposes regarding the implementation of the effect engine: 278 // - 1 it is the address of a pointer to an effect_interface_s structure where the functions 279 // of the effect control API for a particular effect are located. 280 // - 2 it is the address of the context of a particular effect instance. 281 // A typical implementation in the effect library would define a structure as follows: 282 // struct effect_module_s { 283 // const struct effect_interface_s *itfe; 284 // effect_config_t config; 285 // effect_context_t context; 286 // } 287 // The implementation of EffectCreate() function would then allocate a structure of this 288 // type and return its address as effect_handle_t 289 typedef struct effect_interface_s **effect_handle_t; 290 291 292 // Forward definition of type audio_buffer_t 293 typedef struct audio_buffer_s audio_buffer_t; 294 295 296 297 298 299 300 // Effect control interface definition 301 struct effect_interface_s { 302 //////////////////////////////////////////////////////////////////////////////// 303 // 304 // Function: process 305 // 306 // Description: Effect process function. Takes input samples as specified 307 // (count and location) in input buffer descriptor and output processed 308 // samples as specified in output buffer descriptor. If the buffer descriptor 309 // is not specified the function must use either the buffer or the 310 // buffer provider function installed by the EFFECT_CMD_SET_CONFIG command. 311 // The effect framework will call the process() function after the EFFECT_CMD_ENABLE 312 // command is received and until the EFFECT_CMD_DISABLE is received. When the engine 313 // receives the EFFECT_CMD_DISABLE command it should turn off the effect gracefully 314 // and when done indicate that it is OK to stop calling the process() function by 315 // returning the -ENODATA status. 316 // 317 // NOTE: the process() function implementation should be "real-time safe" that is 318 // it should not perform blocking calls: malloc/free, sleep, read/write/open/close, 319 // pthread_cond_wait/pthread_mutex_lock... 320 // 321 // Input: 322 // self: handle to the effect interface this function 323 // is called on. 324 // inBuffer: buffer descriptor indicating where to read samples to process. 325 // If NULL, use the configuration passed by EFFECT_CMD_SET_CONFIG command. 326 // 327 // outBuffer: buffer descriptor indicating where to write processed samples. 328 // If NULL, use the configuration passed by EFFECT_CMD_SET_CONFIG command. 329 // 330 // Output: 331 // returned value: 0 successful operation 332 // -ENODATA the engine has finished the disable phase and the framework 333 // can stop calling process() 334 // -EINVAL invalid interface handle or 335 // invalid input/output buffer description 336 //////////////////////////////////////////////////////////////////////////////// 337 int32_t (*process)(effect_handle_t self, 338 audio_buffer_t *inBuffer, 339 audio_buffer_t *outBuffer); 340 //////////////////////////////////////////////////////////////////////////////// 341 // 342 // Function: command 343 // 344 // Description: Send a command and receive a response to/from effect engine. 345 // 346 // Input: 347 // self: handle to the effect interface this function 348 // is called on. 349 // cmdCode: command code: the command can be a standardized command defined in 350 // effect_command_e (see below) or a proprietary command. 351 // cmdSize: size of command in bytes 352 // pCmdData: pointer to command data 353 // pReplyData: pointer to reply data 354 // 355 // Input/Output: 356 // replySize: maximum size of reply data as input 357 // actual size of reply data as output 358 // 359 // Output: 360 // returned value: 0 successful operation 361 // -EINVAL invalid interface handle or 362 // invalid command/reply size or format according to 363 // command code 364 // The return code should be restricted to indicate problems related to this API 365 // specification. Status related to the execution of a particular command should be 366 // indicated as part of the reply field. 367 // 368 // *pReplyData updated with command response 369 // 370 //////////////////////////////////////////////////////////////////////////////// 371 int32_t (*command)(effect_handle_t self, 372 uint32_t cmdCode, 373 uint32_t cmdSize, 374 void *pCmdData, 375 uint32_t *replySize, 376 void *pReplyData); 377 //////////////////////////////////////////////////////////////////////////////// 378 // 379 // Function: get_descriptor 380 // 381 // Description: Returns the effect descriptor 382 // 383 // Input: 384 // self: handle to the effect interface this function 385 // is called on. 386 // 387 // Input/Output: 388 // pDescriptor: address where to return the effect descriptor. 389 // 390 // Output: 391 // returned value: 0 successful operation. 392 // -EINVAL invalid interface handle or invalid pDescriptor 393 // *pDescriptor: updated with the effect descriptor. 394 // 395 //////////////////////////////////////////////////////////////////////////////// 396 int32_t (*get_descriptor)(effect_handle_t self, 397 effect_descriptor_t *pDescriptor); 398 //////////////////////////////////////////////////////////////////////////////// 399 // 400 // Function: process_reverse 401 // 402 // Description: Process reverse stream function. This function is used to pass 403 // a reference stream to the effect engine. If the engine does not need a reference 404 // stream, this function pointer can be set to NULL. 405 // This function would typically implemented by an Echo Canceler. 406 // 407 // Input: 408 // self: handle to the effect interface this function 409 // is called on. 410 // inBuffer: buffer descriptor indicating where to read samples to process. 411 // If NULL, use the configuration passed by EFFECT_CMD_SET_CONFIG_REVERSE command. 412 // 413 // outBuffer: buffer descriptor indicating where to write processed samples. 414 // If NULL, use the configuration passed by EFFECT_CMD_SET_CONFIG_REVERSE command. 415 // If the buffer and buffer provider in the configuration received by 416 // EFFECT_CMD_SET_CONFIG_REVERSE are also NULL, do not return modified reverse 417 // stream data 418 // 419 // Output: 420 // returned value: 0 successful operation 421 // -ENODATA the engine has finished the disable phase and the framework 422 // can stop calling process_reverse() 423 // -EINVAL invalid interface handle or 424 // invalid input/output buffer description 425 //////////////////////////////////////////////////////////////////////////////// 426 int32_t (*process_reverse)(effect_handle_t self, 427 audio_buffer_t *inBuffer, 428 audio_buffer_t *outBuffer); 429 }; 430 431 432 // 433 //--- Standardized command codes for command() function 434 // 435 enum effect_command_e { 436 EFFECT_CMD_INIT, // initialize effect engine 437 EFFECT_CMD_SET_CONFIG, // configure effect engine (see effect_config_t) 438 EFFECT_CMD_RESET, // reset effect engine 439 EFFECT_CMD_ENABLE, // enable effect process 440 EFFECT_CMD_DISABLE, // disable effect process 441 EFFECT_CMD_SET_PARAM, // set parameter immediately (see effect_param_t) 442 EFFECT_CMD_SET_PARAM_DEFERRED, // set parameter deferred 443 EFFECT_CMD_SET_PARAM_COMMIT, // commit previous set parameter deferred 444 EFFECT_CMD_GET_PARAM, // get parameter 445 EFFECT_CMD_SET_DEVICE, // set audio device (see audio.h, audio_devices_t) 446 EFFECT_CMD_SET_VOLUME, // set volume 447 EFFECT_CMD_SET_AUDIO_MODE, // set the audio mode (normal, ring, ...) 448 EFFECT_CMD_SET_CONFIG_REVERSE, // configure effect engine reverse stream(see effect_config_t) 449 EFFECT_CMD_SET_INPUT_DEVICE, // set capture device (see audio.h, audio_devices_t) 450 EFFECT_CMD_GET_CONFIG, // read effect engine configuration 451 EFFECT_CMD_GET_CONFIG_REVERSE, // read configure effect engine reverse stream configuration 452 EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS,// get all supported configurations for a feature. 453 EFFECT_CMD_GET_FEATURE_CONFIG, // get current feature configuration 454 EFFECT_CMD_SET_FEATURE_CONFIG, // set current feature configuration 455 EFFECT_CMD_SET_AUDIO_SOURCE, // set the audio source (see audio.h, audio_source_t) 456 EFFECT_CMD_OFFLOAD, // set if effect thread is an offload one, 457 // send the ioHandle of the effect thread 458 EFFECT_CMD_FIRST_PROPRIETARY = 0x10000 // first proprietary command code 459 }; 460 461 //================================================================================================== 462 // command: EFFECT_CMD_INIT 463 //-------------------------------------------------------------------------------------------------- 464 // description: 465 // Initialize effect engine: All configurations return to default 466 //-------------------------------------------------------------------------------------------------- 467 // command format: 468 // size: 0 469 // data: N/A 470 //-------------------------------------------------------------------------------------------------- 471 // reply format: 472 // size: sizeof(int) 473 // data: status 474 //================================================================================================== 475 // command: EFFECT_CMD_SET_CONFIG 476 //-------------------------------------------------------------------------------------------------- 477 // description: 478 // Apply new audio parameters configurations for input and output buffers 479 //-------------------------------------------------------------------------------------------------- 480 // command format: 481 // size: sizeof(effect_config_t) 482 // data: effect_config_t 483 //-------------------------------------------------------------------------------------------------- 484 // reply format: 485 // size: sizeof(int) 486 // data: status 487 //================================================================================================== 488 // command: EFFECT_CMD_RESET 489 //-------------------------------------------------------------------------------------------------- 490 // description: 491 // Reset the effect engine. Keep configuration but resets state and buffer content 492 //-------------------------------------------------------------------------------------------------- 493 // command format: 494 // size: 0 495 // data: N/A 496 //-------------------------------------------------------------------------------------------------- 497 // reply format: 498 // size: 0 499 // data: N/A 500 //================================================================================================== 501 // command: EFFECT_CMD_ENABLE 502 //-------------------------------------------------------------------------------------------------- 503 // description: 504 // Enable the process. Called by the framework before the first call to process() 505 //-------------------------------------------------------------------------------------------------- 506 // command format: 507 // size: 0 508 // data: N/A 509 //-------------------------------------------------------------------------------------------------- 510 // reply format: 511 // size: sizeof(int) 512 // data: status 513 //================================================================================================== 514 // command: EFFECT_CMD_DISABLE 515 //-------------------------------------------------------------------------------------------------- 516 // description: 517 // Disable the process. Called by the framework after the last call to process() 518 //-------------------------------------------------------------------------------------------------- 519 // command format: 520 // size: 0 521 // data: N/A 522 //-------------------------------------------------------------------------------------------------- 523 // reply format: 524 // size: sizeof(int) 525 // data: status 526 //================================================================================================== 527 // command: EFFECT_CMD_SET_PARAM 528 //-------------------------------------------------------------------------------------------------- 529 // description: 530 // Set a parameter and apply it immediately 531 //-------------------------------------------------------------------------------------------------- 532 // command format: 533 // size: sizeof(effect_param_t) + size of param and value 534 // data: effect_param_t + param + value. See effect_param_t definition below for value offset 535 //-------------------------------------------------------------------------------------------------- 536 // reply format: 537 // size: sizeof(int) 538 // data: status 539 //================================================================================================== 540 // command: EFFECT_CMD_SET_PARAM_DEFERRED 541 //-------------------------------------------------------------------------------------------------- 542 // description: 543 // Set a parameter but apply it only when receiving EFFECT_CMD_SET_PARAM_COMMIT command 544 //-------------------------------------------------------------------------------------------------- 545 // command format: 546 // size: sizeof(effect_param_t) + size of param and value 547 // data: effect_param_t + param + value. See effect_param_t definition below for value offset 548 //-------------------------------------------------------------------------------------------------- 549 // reply format: 550 // size: 0 551 // data: N/A 552 //================================================================================================== 553 // command: EFFECT_CMD_SET_PARAM_COMMIT 554 //-------------------------------------------------------------------------------------------------- 555 // description: 556 // Apply all previously received EFFECT_CMD_SET_PARAM_DEFERRED commands 557 //-------------------------------------------------------------------------------------------------- 558 // command format: 559 // size: 0 560 // data: N/A 561 //-------------------------------------------------------------------------------------------------- 562 // reply format: 563 // size: sizeof(int) 564 // data: status 565 //================================================================================================== 566 // command: EFFECT_CMD_GET_PARAM 567 //-------------------------------------------------------------------------------------------------- 568 // description: 569 // Get a parameter value 570 //-------------------------------------------------------------------------------------------------- 571 // command format: 572 // size: sizeof(effect_param_t) + size of param 573 // data: effect_param_t + param 574 //-------------------------------------------------------------------------------------------------- 575 // reply format: 576 // size: sizeof(effect_param_t) + size of param and value 577 // data: effect_param_t + param + value. See effect_param_t definition below for value offset 578 //================================================================================================== 579 // command: EFFECT_CMD_SET_DEVICE 580 //-------------------------------------------------------------------------------------------------- 581 // description: 582 // Set the rendering device the audio output path is connected to. See audio.h, audio_devices_t 583 // for device values. 584 // The effect implementation must set EFFECT_FLAG_DEVICE_IND flag in its descriptor to receive this 585 // command when the device changes 586 //-------------------------------------------------------------------------------------------------- 587 // command format: 588 // size: sizeof(uint32_t) 589 // data: uint32_t 590 //-------------------------------------------------------------------------------------------------- 591 // reply format: 592 // size: 0 593 // data: N/A 594 //================================================================================================== 595 // command: EFFECT_CMD_SET_VOLUME 596 //-------------------------------------------------------------------------------------------------- 597 // description: 598 // Set and get volume. Used by audio framework to delegate volume control to effect engine. 599 // The effect implementation must set EFFECT_FLAG_VOLUME_IND or EFFECT_FLAG_VOLUME_CTRL flag in 600 // its descriptor to receive this command before every call to process() function 601 // If EFFECT_FLAG_VOLUME_CTRL flag is set in the effect descriptor, the effect engine must return 602 // the volume that should be applied before the effect is processed. The overall volume (the volume 603 // actually applied by the effect engine multiplied by the returned value) should match the value 604 // indicated in the command. 605 //-------------------------------------------------------------------------------------------------- 606 // command format: 607 // size: n * sizeof(uint32_t) 608 // data: volume for each channel defined in effect_config_t for output buffer expressed in 609 // 8.24 fixed point format 610 //-------------------------------------------------------------------------------------------------- 611 // reply format: 612 // size: n * sizeof(uint32_t) / 0 613 // data: - if EFFECT_FLAG_VOLUME_CTRL is set in effect descriptor: 614 // volume for each channel defined in effect_config_t for output buffer expressed in 615 // 8.24 fixed point format 616 // - if EFFECT_FLAG_VOLUME_CTRL is not set in effect descriptor: 617 // N/A 618 // It is legal to receive a null pointer as pReplyData in which case the effect framework has 619 // delegated volume control to another effect 620 //================================================================================================== 621 // command: EFFECT_CMD_SET_AUDIO_MODE 622 //-------------------------------------------------------------------------------------------------- 623 // description: 624 // Set the audio mode. The effect implementation must set EFFECT_FLAG_AUDIO_MODE_IND flag in its 625 // descriptor to receive this command when the audio mode changes. 626 //-------------------------------------------------------------------------------------------------- 627 // command format: 628 // size: sizeof(uint32_t) 629 // data: audio_mode_t 630 //-------------------------------------------------------------------------------------------------- 631 // reply format: 632 // size: 0 633 // data: N/A 634 //================================================================================================== 635 // command: EFFECT_CMD_SET_CONFIG_REVERSE 636 //-------------------------------------------------------------------------------------------------- 637 // description: 638 // Apply new audio parameters configurations for input and output buffers of reverse stream. 639 // An example of reverse stream is the echo reference supplied to an Acoustic Echo Canceler. 640 //-------------------------------------------------------------------------------------------------- 641 // command format: 642 // size: sizeof(effect_config_t) 643 // data: effect_config_t 644 //-------------------------------------------------------------------------------------------------- 645 // reply format: 646 // size: sizeof(int) 647 // data: status 648 //================================================================================================== 649 // command: EFFECT_CMD_SET_INPUT_DEVICE 650 //-------------------------------------------------------------------------------------------------- 651 // description: 652 // Set the capture device the audio input path is connected to. See audio.h, audio_devices_t 653 // for device values. 654 // The effect implementation must set EFFECT_FLAG_DEVICE_IND flag in its descriptor to receive this 655 // command when the device changes 656 //-------------------------------------------------------------------------------------------------- 657 // command format: 658 // size: sizeof(uint32_t) 659 // data: uint32_t 660 //-------------------------------------------------------------------------------------------------- 661 // reply format: 662 // size: 0 663 // data: N/A 664 //================================================================================================== 665 // command: EFFECT_CMD_GET_CONFIG 666 //-------------------------------------------------------------------------------------------------- 667 // description: 668 // Read audio parameters configurations for input and output buffers 669 //-------------------------------------------------------------------------------------------------- 670 // command format: 671 // size: 0 672 // data: N/A 673 //-------------------------------------------------------------------------------------------------- 674 // reply format: 675 // size: sizeof(effect_config_t) 676 // data: effect_config_t 677 //================================================================================================== 678 // command: EFFECT_CMD_GET_CONFIG_REVERSE 679 //-------------------------------------------------------------------------------------------------- 680 // description: 681 // Read audio parameters configurations for input and output buffers of reverse stream 682 //-------------------------------------------------------------------------------------------------- 683 // command format: 684 // size: 0 685 // data: N/A 686 //-------------------------------------------------------------------------------------------------- 687 // reply format: 688 // size: sizeof(effect_config_t) 689 // data: effect_config_t 690 //================================================================================================== 691 // command: EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS 692 //-------------------------------------------------------------------------------------------------- 693 // description: 694 // Queries for supported configurations for a particular feature (e.g. get the supported 695 // combinations of main and auxiliary channels for a noise suppressor). 696 // The command parameter is the feature identifier (See effect_feature_e for a list of defined 697 // features) followed by the maximum number of configuration descriptor to return. 698 // The reply is composed of: 699 // - status (uint32_t): 700 // - 0 if feature is supported 701 // - -ENOSYS if the feature is not supported, 702 // - -ENOMEM if the feature is supported but the total number of supported configurations 703 // exceeds the maximum number indicated by the caller. 704 // - total number of supported configurations (uint32_t) 705 // - an array of configuration descriptors. 706 // The actual number of descriptors returned must not exceed the maximum number indicated by 707 // the caller. 708 //-------------------------------------------------------------------------------------------------- 709 // command format: 710 // size: 2 x sizeof(uint32_t) 711 // data: effect_feature_e + maximum number of configurations to return 712 //-------------------------------------------------------------------------------------------------- 713 // reply format: 714 // size: 2 x sizeof(uint32_t) + n x sizeof (<config descriptor>) 715 // data: status + total number of configurations supported + array of n config descriptors 716 //================================================================================================== 717 // command: EFFECT_CMD_GET_FEATURE_CONFIG 718 //-------------------------------------------------------------------------------------------------- 719 // description: 720 // Retrieves current configuration for a given feature. 721 // The reply status is: 722 // - 0 if feature is supported 723 // - -ENOSYS if the feature is not supported, 724 //-------------------------------------------------------------------------------------------------- 725 // command format: 726 // size: sizeof(uint32_t) 727 // data: effect_feature_e 728 //-------------------------------------------------------------------------------------------------- 729 // reply format: 730 // size: sizeof(uint32_t) + sizeof (<config descriptor>) 731 // data: status + config descriptor 732 //================================================================================================== 733 // command: EFFECT_CMD_SET_FEATURE_CONFIG 734 //-------------------------------------------------------------------------------------------------- 735 // description: 736 // Sets current configuration for a given feature. 737 // The reply status is: 738 // - 0 if feature is supported 739 // - -ENOSYS if the feature is not supported, 740 // - -EINVAL if the configuration is invalid 741 //-------------------------------------------------------------------------------------------------- 742 // command format: 743 // size: sizeof(uint32_t) + sizeof (<config descriptor>) 744 // data: effect_feature_e + config descriptor 745 //-------------------------------------------------------------------------------------------------- 746 // reply format: 747 // size: sizeof(uint32_t) 748 // data: status 749 //================================================================================================== 750 // command: EFFECT_CMD_SET_AUDIO_SOURCE 751 //-------------------------------------------------------------------------------------------------- 752 // description: 753 // Set the audio source the capture path is configured for (Camcorder, voice recognition...). 754 // See audio.h, audio_source_t for values. 755 //-------------------------------------------------------------------------------------------------- 756 // command format: 757 // size: sizeof(uint32_t) 758 // data: uint32_t 759 //-------------------------------------------------------------------------------------------------- 760 // reply format: 761 // size: 0 762 // data: N/A 763 //================================================================================================== 764 // command: EFFECT_CMD_OFFLOAD 765 //-------------------------------------------------------------------------------------------------- 766 // description: 767 // 1.indicate if the playback thread the effect is attached to is offloaded or not 768 // 2.update the io handle of the playback thread the effect is attached to 769 //-------------------------------------------------------------------------------------------------- 770 // command format: 771 // size: sizeof(effect_offload_param_t) 772 // data: effect_offload_param_t 773 //-------------------------------------------------------------------------------------------------- 774 // reply format: 775 // size: sizeof(uint32_t) 776 // data: uint32_t 777 //-------------------------------------------------------------------------------------------------- 778 // command: EFFECT_CMD_FIRST_PROPRIETARY 779 //-------------------------------------------------------------------------------------------------- 780 // description: 781 // All proprietary effect commands must use command codes above this value. The size and format of 782 // command and response fields is free in this case 783 //================================================================================================== 784 785 786 // Audio buffer descriptor used by process(), bufferProvider() functions and buffer_config_t 787 // structure. Multi-channel audio is always interleaved. The channel order is from LSB to MSB with 788 // regard to the channel mask definition in audio.h, audio_channel_mask_t e.g : 789 // Stereo: left, right 790 // 5 point 1: front left, front right, front center, low frequency, back left, back right 791 // The buffer size is expressed in frame count, a frame being composed of samples for all 792 // channels at a given time. Frame size for unspecified format (AUDIO_FORMAT_OTHER) is 8 bit by 793 // definition 794 struct audio_buffer_s { 795 size_t frameCount; // number of frames in buffer 796 union { 797 void* raw; // raw pointer to start of buffer 798 int32_t* s32; // pointer to signed 32 bit data at start of buffer 799 int16_t* s16; // pointer to signed 16 bit data at start of buffer 800 uint8_t* u8; // pointer to unsigned 8 bit data at start of buffer 801 }; 802 }; 803 804 // The buffer_provider_s structure contains functions that can be used 805 // by the effect engine process() function to query and release input 806 // or output audio buffer. 807 // The getBuffer() function is called to retrieve a buffer where data 808 // should read from or written to by process() function. 809 // The releaseBuffer() function MUST be called when the buffer retrieved 810 // with getBuffer() is not needed anymore. 811 // The process function should use the buffer provider mechanism to retrieve 812 // input or output buffer if the inBuffer or outBuffer passed as argument is NULL 813 // and the buffer configuration (buffer_config_t) given by the EFFECT_CMD_SET_CONFIG 814 // command did not specify an audio buffer. 815 816 typedef int32_t (* buffer_function_t)(void *cookie, audio_buffer_t *buffer); 817 818 typedef struct buffer_provider_s { 819 buffer_function_t getBuffer; // retrieve next buffer 820 buffer_function_t releaseBuffer; // release used buffer 821 void *cookie; // for use by client of buffer provider functions 822 } buffer_provider_t; 823 824 825 // The buffer_config_s structure specifies the input or output audio format 826 // to be used by the effect engine. It is part of the effect_config_t 827 // structure that defines both input and output buffer configurations and is 828 // passed by the EFFECT_CMD_SET_CONFIG or EFFECT_CMD_SET_CONFIG_REVERSE command. 829 typedef struct buffer_config_s { 830 audio_buffer_t buffer; // buffer for use by process() function if not passed explicitly 831 uint32_t samplingRate; // sampling rate 832 uint32_t channels; // channel mask (see audio_channel_mask_t in audio.h) 833 buffer_provider_t bufferProvider; // buffer provider 834 uint8_t format; // Audio format (see audio_format_t in audio.h) 835 uint8_t accessMode; // read/write or accumulate in buffer (effect_buffer_access_e) 836 uint16_t mask; // indicates which of the above fields is valid 837 } buffer_config_t; 838 839 // Values for "accessMode" field of buffer_config_t: 840 // overwrite, read only, accumulate (read/modify/write) 841 enum effect_buffer_access_e { 842 EFFECT_BUFFER_ACCESS_WRITE, 843 EFFECT_BUFFER_ACCESS_READ, 844 EFFECT_BUFFER_ACCESS_ACCUMULATE 845 846 }; 847 848 // feature identifiers for EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS command 849 enum effect_feature_e { 850 EFFECT_FEATURE_AUX_CHANNELS, // supports auxiliary channels (e.g. dual mic noise suppressor) 851 EFFECT_FEATURE_CNT 852 }; 853 854 // EFFECT_FEATURE_AUX_CHANNELS feature configuration descriptor. Describe a combination 855 // of main and auxiliary channels supported 856 typedef struct channel_config_s { 857 audio_channel_mask_t main_channels; // channel mask for main channels 858 audio_channel_mask_t aux_channels; // channel mask for auxiliary channels 859 } channel_config_t; 860 861 862 // Values for bit field "mask" in buffer_config_t. If a bit is set, the corresponding field 863 // in buffer_config_t must be taken into account when executing the EFFECT_CMD_SET_CONFIG command 864 #define EFFECT_CONFIG_BUFFER 0x0001 // buffer field must be taken into account 865 #define EFFECT_CONFIG_SMP_RATE 0x0002 // samplingRate field must be taken into account 866 #define EFFECT_CONFIG_CHANNELS 0x0004 // channels field must be taken into account 867 #define EFFECT_CONFIG_FORMAT 0x0008 // format field must be taken into account 868 #define EFFECT_CONFIG_ACC_MODE 0x0010 // accessMode field must be taken into account 869 #define EFFECT_CONFIG_PROVIDER 0x0020 // bufferProvider field must be taken into account 870 #define EFFECT_CONFIG_ALL (EFFECT_CONFIG_BUFFER | EFFECT_CONFIG_SMP_RATE | \ 871 EFFECT_CONFIG_CHANNELS | EFFECT_CONFIG_FORMAT | \ 872 EFFECT_CONFIG_ACC_MODE | EFFECT_CONFIG_PROVIDER) 873 874 875 // effect_config_s structure describes the format of the pCmdData argument of EFFECT_CMD_SET_CONFIG 876 // command to configure audio parameters and buffers for effect engine input and output. 877 typedef struct effect_config_s { 878 buffer_config_t inputCfg; 879 buffer_config_t outputCfg; 880 } effect_config_t; 881 882 883 // effect_param_s structure describes the format of the pCmdData argument of EFFECT_CMD_SET_PARAM 884 // command and pCmdData and pReplyData of EFFECT_CMD_GET_PARAM command. 885 // psize and vsize represent the actual size of parameter and value. 886 // 887 // NOTE: the start of value field inside the data field is always on a 32 bit boundary: 888 // 889 // +-----------+ 890 // | status | sizeof(int) 891 // +-----------+ 892 // | psize | sizeof(int) 893 // +-----------+ 894 // | vsize | sizeof(int) 895 // +-----------+ 896 // | | | | 897 // ~ parameter ~ > psize | 898 // | | | > ((psize - 1)/sizeof(int) + 1) * sizeof(int) 899 // +-----------+ | 900 // | padding | | 901 // +-----------+ 902 // | | | 903 // ~ value ~ > vsize 904 // | | | 905 // +-----------+ 906 907 typedef struct effect_param_s { 908 int32_t status; // Transaction status (unused for command, used for reply) 909 uint32_t psize; // Parameter size 910 uint32_t vsize; // Value size 911 char data[]; // Start of Parameter + Value data 912 } effect_param_t; 913 914 // structure used by EFFECT_CMD_OFFLOAD command 915 typedef struct effect_offload_param_s { 916 bool isOffload; // true if the playback thread the effect is attached to is offloaded 917 int ioHandle; // io handle of the playback thread the effect is attached to 918 } effect_offload_param_t; 919 920 921 ///////////////////////////////////////////////// 922 // Effect library interface 923 ///////////////////////////////////////////////// 924 925 // Effect library interface version 3.0 926 // Note that EffectsFactory.c only checks the major version component, so changes to the minor 927 // number can only be used for fully backwards compatible changes 928 #define EFFECT_LIBRARY_API_VERSION EFFECT_MAKE_API_VERSION(3,0) 929 930 #define AUDIO_EFFECT_LIBRARY_TAG ((('A') << 24) | (('E') << 16) | (('L') << 8) | ('T')) 931 932 // Every effect library must have a data structure named AUDIO_EFFECT_LIBRARY_INFO_SYM 933 // and the fields of this data structure must begin with audio_effect_library_t 934 935 typedef struct audio_effect_library_s { 936 // tag must be initialized to AUDIO_EFFECT_LIBRARY_TAG 937 uint32_t tag; 938 // Version of the effect library API : 0xMMMMmmmm MMMM: Major, mmmm: minor 939 uint32_t version; 940 // Name of this library 941 const char *name; 942 // Author/owner/implementor of the library 943 const char *implementor; 944 945 //////////////////////////////////////////////////////////////////////////////// 946 // 947 // Function: create_effect 948 // 949 // Description: Creates an effect engine of the specified implementation uuid and 950 // returns an effect control interface on this engine. The function will allocate the 951 // resources for an instance of the requested effect engine and return 952 // a handle on the effect control interface. 953 // 954 // Input: 955 // uuid: pointer to the effect uuid. 956 // sessionId: audio session to which this effect instance will be attached. 957 // All effects created with the same session ID are connected in series and process 958 // the same signal stream. Knowing that two effects are part of the same effect 959 // chain can help the library implement some kind of optimizations. 960 // ioId: identifies the output or input stream this effect is directed to in 961 // audio HAL. 962 // For future use especially with tunneled HW accelerated effects 963 // 964 // Input/Output: 965 // pHandle: address where to return the effect interface handle. 966 // 967 // Output: 968 // returned value: 0 successful operation. 969 // -ENODEV library failed to initialize 970 // -EINVAL invalid pEffectUuid or pHandle 971 // -ENOENT no effect with this uuid found 972 // *pHandle: updated with the effect interface handle. 973 // 974 //////////////////////////////////////////////////////////////////////////////// 975 int32_t (*create_effect)(const effect_uuid_t *uuid, 976 int32_t sessionId, 977 int32_t ioId, 978 effect_handle_t *pHandle); 979 980 //////////////////////////////////////////////////////////////////////////////// 981 // 982 // Function: release_effect 983 // 984 // Description: Releases the effect engine whose handle is given as argument. 985 // All resources allocated to this particular instance of the effect are 986 // released. 987 // 988 // Input: 989 // handle: handle on the effect interface to be released. 990 // 991 // Output: 992 // returned value: 0 successful operation. 993 // -ENODEV library failed to initialize 994 // -EINVAL invalid interface handle 995 // 996 //////////////////////////////////////////////////////////////////////////////// 997 int32_t (*release_effect)(effect_handle_t handle); 998 999 //////////////////////////////////////////////////////////////////////////////// 1000 // 1001 // Function: get_descriptor 1002 // 1003 // Description: Returns the descriptor of the effect engine which implementation UUID is 1004 // given as argument. 1005 // 1006 // Input/Output: 1007 // uuid: pointer to the effect uuid. 1008 // pDescriptor: address where to return the effect descriptor. 1009 // 1010 // Output: 1011 // returned value: 0 successful operation. 1012 // -ENODEV library failed to initialize 1013 // -EINVAL invalid pDescriptor or uuid 1014 // *pDescriptor: updated with the effect descriptor. 1015 // 1016 //////////////////////////////////////////////////////////////////////////////// 1017 int32_t (*get_descriptor)(const effect_uuid_t *uuid, 1018 effect_descriptor_t *pDescriptor); 1019 } audio_effect_library_t; 1020 1021 // Name of the hal_module_info 1022 #define AUDIO_EFFECT_LIBRARY_INFO_SYM AELI 1023 1024 // Name of the hal_module_info as a string 1025 #define AUDIO_EFFECT_LIBRARY_INFO_SYM_AS_STR "AELI" 1026 1027 __END_DECLS 1028 1029 #endif // ANDROID_AUDIO_EFFECT_H 1030
