1/* 2 * Copyright (C) 2018 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#define LOG_TAG "ma_listener" 18/*#define LOG_NDEBUG 0*/ 19 20#include <stdlib.h> 21#include <dlfcn.h> 22#include <math.h> 23#include <pthread.h> 24#include <unistd.h> 25#include <cutils/list.h> 26#include <cutils/log.h> 27#include <hardware/audio_effect.h> 28#include <audio-base.h> 29 30#define MA_FLAG ( EFFECT_FLAG_TYPE_INSERT | \ 31 EFFECT_FLAG_VOLUME_IND | \ 32 EFFECT_FLAG_DEVICE_IND | \ 33 EFFECT_FLAG_OFFLOAD_SUPPORTED | \ 34 EFFECT_FLAG_NO_PROCESS) 35 36#define PRINT_STREAM_TYPE(i) ALOGV("descriptor found and is of stream type %s ",\ 37 i == AUDIO_STREAM_MUSIC ? "MUSIC": \ 38 i == AUDIO_STREAM_RING ? "RING": \ 39 i == AUDIO_STREAM_ALARM ? "ALARM": \ 40 i == AUDIO_STREAM_VOICE_CALL ? "Voice_call": \ 41 i == AUDIO_STREAM_SYSTEM ? "SYSTEM": \ 42 i == AUDIO_STREAM_NOTIFICATION ? "Notification":\ 43 "--INVALID--"); \ 44 45#define MA_SET_STATE "audio_hw_send_ma_parameter" 46#define HAL_VENDOR_PATH "/vendor/lib/hw" 47 48enum { 49 MA_LISTENER_STATE_UNINITIALIZED, 50 MA_LISTENER_STATE_INITIALIZED, 51 MA_LISTENER_STATE_ACTIVE, 52}; 53 54typedef struct ma_listener_context_s ma_listener_context_t; 55static const struct effect_interface_s effect_interface; 56 57struct ma_state { 58 float vol; 59 bool active; 60}; 61 62static const audio_stream_type_t MIN_STREAM_TYPES = AUDIO_STREAM_VOICE_CALL; 63static const audio_stream_type_t MAX_STREAM_TYPES = AUDIO_STREAM_NOTIFICATION; 64static struct ma_state g_cur_state[MAX_STREAM_TYPES + 1]; 65 66struct ma_listener_context_s { 67 const struct effect_interface_s *itfe; 68 struct listnode effect_list_node; 69 effect_config_t config; 70 const effect_descriptor_t *desc; 71 uint32_t stream_type; 72 uint32_t session_id; 73 uint32_t state; 74 uint32_t dev_id; 75 float left_vol; 76 float right_vol; 77}; 78 79/* voice UUID: 4ece09c2-3728-11e8-a9f9-fc4dd4486b6d */ 80const effect_descriptor_t ma_listener_voice_descriptor = { 81 { 0x46f924ed, 0x25c3, 0x4272, 0x85b1, { 0x41, 0x78, 0x3f, 0x0d, 0xc6, 0x38 } }, // type 82 { 0x4ece09c2, 0x3728, 0x11e8, 0xa9f9, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 83 EFFECT_CONTROL_API_VERSION, 84 MA_FLAG, 85 0, /* TODO */ 86 1, 87 "MAXXAUDIO listener for Voice", 88 "The Android Open Source Project", 89}; 90 91/* system UUID: 4f705ff6-3728-11e8-a0c6-fc4dd4486b6d */ 92const effect_descriptor_t ma_listener_system_descriptor = { 93 { 0x8bd0f979, 0x5266, 0x4791, 0x9213, { 0x11, 0x3a, 0xbc, 0xf7, 0xd3, 0xdc } }, // type 94 { 0x4f705ff6, 0x3728, 0x11e8, 0xa0c6, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 95 EFFECT_CONTROL_API_VERSION, 96 MA_FLAG, 97 0, /* TODO */ 98 1, 99 "MAXXAUDIO listener for System", 100 "The Android Open Source Project", 101}; 102 103/* ring UUID: 4fd6e5c8-3728-11e8-8303-fc4dd4486b6d */ 104const effect_descriptor_t ma_listener_ring_descriptor = { 105 { 0x5380692a, 0x872e, 0x4697, 0x8e38, { 0xcd, 0xd1, 0x09, 0xf6, 0xcb, 0x87 } }, // type 106 { 0x4fd6e5c8, 0x3728, 0x11e8, 0x8303, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 107 EFFECT_CONTROL_API_VERSION, 108 MA_FLAG, 109 0, /* TODO */ 110 1, 111 "MAXXAUDIO listener for Ring", 112 "The Android Open Source Project", 113}; 114/* music UUID: 5036194e-3728-11e8-8db9-fc4dd4486b6d */ 115const effect_descriptor_t ma_listener_music_descriptor = { 116 { 0x3a3a19b2, 0x62b1, 0x4785, 0xb55e, { 0xb2, 0x8f, 0xd4, 0x1b, 0x83, 0x58 } }, // type 117 { 0x5036194e, 0x3728, 0x11e8, 0x8db9, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 118 EFFECT_CONTROL_API_VERSION, 119 MA_FLAG, 120 0, /* TODO */ 121 1, 122 "MAXXAUDIO listener for Music", 123 "The Android Open Source Project", 124}; 125/* alarm UUID: 50b9f084-3728-11e8-9225-fc4dd4486b6d */ 126const effect_descriptor_t ma_listener_alarm_descriptor = { 127 { 0x8d08d30f, 0xb4c3, 0x4600, 0x8f99, { 0xfc, 0xbb, 0x5d, 0x05, 0x8b, 0x60 } }, // type 128 { 0x50b9f084, 0x3728, 0x11e8, 0x9225, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 129 EFFECT_CONTROL_API_VERSION, 130 MA_FLAG, 131 0, /* TODO */ 132 1, 133 "MAXXAUDIO listener for Alarm", 134 "The Android Open Source Project", 135}; 136/* notification UUID: 50fe4d56-3728-11e8-ac73-fc4dd4486b6d */ 137const effect_descriptor_t ma_listener_notification_descriptor = { 138 { 0x513d09f5, 0xae7f, 0x483d, 0x922a, { 0x5c, 0x72, 0xc5, 0xe5, 0x68, 0x4c } }, // type 139 { 0x50fe4d56, 0x3728, 0x11e8, 0xac73, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid 140 EFFECT_CONTROL_API_VERSION, 141 MA_FLAG, 142 0, /* TODO */ 143 1, 144 "MAXXAUDIO listener for Notification", 145 "The Android Open Source Project", 146}; 147 148static const effect_descriptor_t *descriptors[] = { 149 &ma_listener_voice_descriptor, 150 &ma_listener_system_descriptor, 151 &ma_listener_ring_descriptor, 152 &ma_listener_music_descriptor, 153 &ma_listener_alarm_descriptor, 154 &ma_listener_notification_descriptor, 155 NULL, 156}; 157 158/* function of sending state to HAL */ 159static bool (*send_ma_parameter)(int, float, bool); 160 161static int init_state = -1; 162pthread_once_t once = PTHREAD_ONCE_INIT; 163 164struct listnode ma_effect_list; 165pthread_mutex_t ma_listner_init_lock; 166 167/* 168 * Local functions 169 */ 170static inline bool valid_dev_in_context(struct ma_listener_context_s *context) 171{ 172 /* check device */ 173 if ((context->dev_id & AUDIO_DEVICE_OUT_SPEAKER) || 174 (context->dev_id & AUDIO_DEVICE_OUT_SPEAKER_SAFE) || 175 /* TODO: it should be dynamic if hybird split A2SP is implemented. */ 176 (context->dev_id & AUDIO_DEVICE_OUT_ALL_A2DP) || 177 (context->dev_id & AUDIO_DEVICE_OUT_ALL_USB)) { 178 return true; 179 } 180 181 return false; 182} 183 184static void check_and_set_ma_parameter(uint32_t stream_type) 185{ 186 bool active = false; 187 float temp_vol = 0.0; 188 float max_vol = 0.0; 189 struct listnode *node = NULL; 190 ma_listener_context_t *context = NULL; 191 192 ALOGV("%s .. called ..", __func__); 193 // get maximum volume for the active session with same strem type 194 list_for_each(node, &ma_effect_list) { 195 context = node_to_item(node, struct ma_listener_context_s, effect_list_node); 196 if (context->stream_type == stream_type && 197 valid_dev_in_context(context)) { 198 if (context->state == MA_LISTENER_STATE_ACTIVE) { 199 active = true; 200 temp_vol = fmax(context->left_vol, context->right_vol); 201 if (max_vol < temp_vol) 202 max_vol = temp_vol; 203 ALOGV("%s: check session(%d) volume(%f) for stream(%d)", 204 __func__, context->session_id, temp_vol, stream_type); 205 } 206 } 207 } 208 209 // check volume 210 if (max_vol < 0.0) max_vol = 0; 211 else if (max_vol > 1.0) max_vol = 1.0; 212 213 if (send_ma_parameter != NULL && 214 stream_type >= MIN_STREAM_TYPES && 215 stream_type <= MAX_STREAM_TYPES && 216 (g_cur_state[stream_type].vol != max_vol || 217 g_cur_state[stream_type].active != active)) { 218 219 ALOGV("%s: set stream(%d) active(%s->%s) volume(%f->%f)", 220 __func__, stream_type, 221 g_cur_state[stream_type].active ? "T" : "F", active ? "T" : "F", 222 g_cur_state[stream_type].vol, max_vol); 223 224 // update changes to hal 225 send_ma_parameter(stream_type, max_vol, active); 226 g_cur_state[stream_type].vol = max_vol; 227 g_cur_state[stream_type].active = active; 228 } 229 230 return; 231} 232 233/* 234 * Effect Control Interface Implementation 235 */ 236static int ma_effect_command(effect_handle_t self, 237 uint32_t cmd_code, uint32_t cmd_size, 238 void *p_cmd_data, uint32_t *reply_size, 239 void *p_reply_data) 240{ 241 ma_listener_context_t *context = (ma_listener_context_t *)self; 242 int status = 0; 243 244 ALOGV("%s .. called ..", __func__); 245 pthread_mutex_lock(&ma_listner_init_lock); 246 247 if (context == NULL || context->state == MA_LISTENER_STATE_UNINITIALIZED) { 248 ALOGE("%s: %s is NULL", __func__, (context == NULL) ? 249 "context" : "context->state"); 250 status = -EINVAL; 251 goto exit; 252 } 253 254 switch (cmd_code) { 255 case EFFECT_CMD_INIT: 256 ALOGV("%s :: cmd called EFFECT_CMD_INIT", __func__); 257 if (p_reply_data == NULL || *reply_size != sizeof(int)) { 258 ALOGE("%s: EFFECT_CMD_INIT: %s, sending -EINVAL", __func__, 259 (p_reply_data == NULL) ? "p_reply_data is NULL" : 260 "*reply_size != sizeof(int)"); 261 status = -EINVAL; 262 goto exit; 263 } 264 *(int *)p_reply_data = 0; 265 break; 266 267 case EFFECT_CMD_SET_CONFIG: 268 ALOGV("%s :: cmd called EFFECT_CMD_SET_CONFIG", __func__); 269 if (p_cmd_data == NULL || cmd_size != sizeof(effect_config_t) 270 || p_reply_data == NULL || reply_size == NULL || *reply_size != sizeof(int)) { 271 status = -EINVAL; 272 goto exit; 273 } 274 context->config = *(effect_config_t *)p_cmd_data; 275 *(int *)p_reply_data = 0; 276 break; 277 278 case EFFECT_CMD_GET_CONFIG: 279 ALOGV("%s :: cmd called EFFECT_CMD_GET_CONFIG", __func__); 280 break; 281 282 case EFFECT_CMD_RESET: 283 ALOGV("%s :: cmd called EFFECT_CMD_RESET", __func__); 284 break; 285 286 case EFFECT_CMD_SET_AUDIO_MODE: 287 ALOGV("%s :: cmd called EFFECT_CMD_SET_AUDIO_MODE", __func__); 288 break; 289 290 case EFFECT_CMD_OFFLOAD: 291 ALOGV("%s :: cmd called EFFECT_CMD_OFFLOAD", __func__); 292 if (p_reply_data == NULL || *reply_size != sizeof(int)) { 293 ALOGE("%s: EFFECT_CMD_OFFLOAD: %s, sending -EINVAL", __func__, 294 (p_reply_data == NULL) ? "p_reply_data is NULL" : 295 "*reply_size != sizeof(int)"); 296 status = -EINVAL; 297 goto exit; 298 } 299 *(int *)p_reply_data = 0; 300 break; 301 302 case EFFECT_CMD_ENABLE: 303 ALOGV("%s :: cmd called EFFECT_CMD_ENABLE", __func__); 304 if (p_reply_data == NULL || *reply_size != sizeof(int)) { 305 ALOGE("%s: EFFECT_CMD_ENABLE: %s, sending -EINVAL", __func__, 306 (p_reply_data == NULL) ? "p_reply_data is NULL" : 307 "*reply_size != sizeof(int)"); 308 status = -EINVAL; 309 goto exit; 310 } 311 312 if (context->state != MA_LISTENER_STATE_INITIALIZED) { 313 ALOGE("%s: EFFECT_CMD_ENABLE : state not INITIALIZED", __func__); 314 status = -ENOSYS; 315 goto exit; 316 } 317 318 context->state = MA_LISTENER_STATE_ACTIVE; 319 *(int *)p_reply_data = 0; 320 321 // After changing the state and if device is valid 322 // check and send state 323 if (valid_dev_in_context(context)) { 324 check_and_set_ma_parameter(context->stream_type); 325 } 326 327 break; 328 329 case EFFECT_CMD_DISABLE: 330 ALOGV("%s :: cmd called EFFECT_CMD_DISABLE", __func__); 331 if (p_reply_data == NULL || *reply_size != sizeof(int)) { 332 ALOGE("%s: EFFECT_CMD_DISABLE: %s, sending -EINVAL", __func__, 333 (p_reply_data == NULL) ? "p_reply_data is NULL" : 334 "*reply_size != sizeof(int)"); 335 status = -EINVAL; 336 goto exit; 337 } 338 339 if (context->state != MA_LISTENER_STATE_ACTIVE) { 340 ALOGE("%s: EFFECT_CMD_ENABLE : state not ACTIVE", __func__); 341 status = -ENOSYS; 342 goto exit; 343 } 344 345 context->state = MA_LISTENER_STATE_INITIALIZED; 346 *(int *)p_reply_data = 0; 347 348 // After changing the state and if device is valid 349 // check and send state 350 if (valid_dev_in_context(context)) { 351 check_and_set_ma_parameter(context->stream_type); 352 } 353 354 break; 355 356 case EFFECT_CMD_GET_PARAM: 357 ALOGV("%s :: cmd called EFFECT_CMD_GET_PARAM", __func__); 358 break; 359 360 case EFFECT_CMD_SET_PARAM: 361 ALOGV("%s :: cmd called EFFECT_CMD_SET_PARAM", __func__); 362 break; 363 364 case EFFECT_CMD_SET_DEVICE: 365 { 366 uint32_t new_device; 367 368 if (p_cmd_data == NULL) { 369 ALOGE("%s: EFFECT_CMD_SET_DEVICE: cmd data NULL", __func__); 370 status = -EINVAL; 371 goto exit; 372 } 373 374 new_device = *(uint32_t *)p_cmd_data; 375 ALOGV("%s :: EFFECT_CMD_SET_DEVICE: (current/new) device (0x%x / 0x%x)", 376 __func__, context->dev_id, new_device); 377 378 context->dev_id = new_device; 379 // After changing the state and if device is valid 380 // check and send parameter 381 if (valid_dev_in_context(context)) { 382 check_and_set_ma_parameter(context->stream_type); 383 } 384 } 385 break; 386 387 case EFFECT_CMD_SET_VOLUME: 388 { 389 float left_vol = 0, right_vol = 0; 390 391 ALOGV("cmd called EFFECT_CMD_SET_VOLUME"); 392 if (p_cmd_data == NULL || cmd_size != 2 * sizeof(uint32_t)) { 393 ALOGE("%s: EFFECT_CMD_SET_VOLUME: %s", __func__, (p_cmd_data == NULL) ? 394 "p_cmd_data is NULL" : "cmd_size issue"); 395 status = -EINVAL; 396 goto exit; 397 } 398 399 left_vol = (float)(*(uint32_t *)p_cmd_data) / (1 << 24); 400 right_vol = (float)(*((uint32_t *)p_cmd_data + 1)) / (1 << 24); 401 ALOGV("Current Volume (%f / %f ) new Volume (%f / %f)", context->left_vol, 402 context->right_vol, left_vol, right_vol); 403 404 context->left_vol = left_vol; 405 context->right_vol = right_vol; 406 407 // After changing the state and if device is valid 408 // check and send volume 409 if (valid_dev_in_context(context)) { 410 check_and_set_ma_parameter(context->stream_type); 411 } 412 } 413 break; 414 415 default: 416 ALOGW("%s: unknow command %d", __func__, cmd_code); 417 status = -ENOSYS; 418 break; 419 } 420 421exit: 422 pthread_mutex_unlock(&ma_listner_init_lock); 423 return status; 424} 425 426/* Effect Control Interface Implementation: get_descriptor */ 427static int ma_effect_get_descriptor(effect_handle_t self, 428 effect_descriptor_t *descriptor) 429{ 430 ma_listener_context_t *context = (ma_listener_context_t *)self; 431 ALOGV("%s .. called ..", __func__); 432 433 if (descriptor == NULL) { 434 ALOGE("%s: descriptor is NULL", __func__); 435 return -EINVAL; 436 } 437 438 *descriptor = *context->desc; 439 return 0; 440} 441 442static void init_once() 443{ 444 int ret = 0; 445 void *handle = NULL; 446 char lib_path[PATH_MAX] = {0}; 447 448 if (init_state == 0) { 449 ALOGD("%s : already init ... do nothing", __func__); 450 return; 451 } 452 453 ALOGV("%s .. called ..", __func__); 454 455 send_ma_parameter = NULL; 456 457 ret = snprintf(lib_path, PATH_MAX, "%s/%s", HAL_VENDOR_PATH, HAL_LIB_NAME); 458 if (ret < 0) { 459 ALOGE("%s: snprintf failed for lib %s ret %d", __func__, HAL_LIB_NAME, ret); 460 return; 461 } 462 463 handle = dlopen(lib_path, RTLD_NOW); 464 if (handle == NULL) { 465 ALOGE("%s: DLOPEN failed for %s", __func__, HAL_LIB_NAME); 466 return; 467 } else { 468 ALOGV("%s: DLOPEN successful for %s", __func__, HAL_LIB_NAME); 469 send_ma_parameter = (bool (*)(int, float, bool))dlsym(handle, MA_SET_STATE); 470 471 if (!send_ma_parameter) { 472 ALOGE("%s: dlsym error %s for send_ma_parameter", __func__, dlerror()); 473 return; 474 } 475 } 476 477 pthread_mutex_init(&ma_listner_init_lock, NULL); 478 list_init(&ma_effect_list); 479 init_state = 0; 480 481 ALOGD("%s: exit ret %d", __func__, init_state); 482} 483 484static bool lib_init() 485{ 486 pthread_once(&once, init_once); 487 return init_state; 488} 489 490static int ma_prc_lib_create(const effect_uuid_t *uuid, 491 int32_t session_id, 492 int32_t io_id __unused, 493 effect_handle_t *p_handle) 494{ 495 int itt = 0; 496 ma_listener_context_t *context = NULL; 497 498 ALOGV("%s .. called ..", __func__); 499 500 if (lib_init() != 0) { 501 return init_state; 502 } 503 504 if (p_handle == NULL || uuid == NULL) { 505 ALOGE("%s: %s is NULL", __func__, (p_handle == NULL) ? "p_handle" : "uuid"); 506 return -EINVAL; 507 } 508 509 context = (ma_listener_context_t *)calloc(1, sizeof(ma_listener_context_t)); 510 511 if (context == NULL) { 512 ALOGE("%s: failed to allocate for context .. oops !!", __func__); 513 return -EINVAL; 514 } 515 516 // check if UUID is supported 517 for (itt = 0; descriptors[itt] != NULL; itt++) { 518 if (memcmp(uuid, &descriptors[itt]->uuid, sizeof(effect_uuid_t)) == 0) { 519 context->desc = descriptors[itt]; 520 context->stream_type = itt; 521 PRINT_STREAM_TYPE(itt) 522 break; 523 } 524 } 525 526 if (descriptors[itt] == NULL) { 527 ALOGE("%s .. couldnt find passed uuid, something wrong", __func__); 528 free(context); 529 return -EINVAL; 530 } 531 532 ALOGV("%s CREATED_CONTEXT %p", __func__, context); 533 534 context->itfe = &effect_interface; 535 context->state = MA_LISTENER_STATE_INITIALIZED; 536 context->dev_id = AUDIO_DEVICE_NONE; 537 context->session_id = session_id; 538 539 // Add this to master list 540 pthread_mutex_lock(&ma_listner_init_lock); 541 list_add_tail(&ma_effect_list, &context->effect_list_node); 542 543 pthread_mutex_unlock(&ma_listner_init_lock); 544 545 *p_handle = (effect_handle_t)context; 546 return 0; 547} 548 549static int ma_prc_lib_release(effect_handle_t handle) 550{ 551 struct listnode *node, *temp_node_next; 552 ma_listener_context_t *context = NULL; 553 ma_listener_context_t *recv_contex = (ma_listener_context_t *)handle; 554 int status = -EINVAL; 555 556 ALOGV("%s: context %p", __func__, handle); 557 558 if (recv_contex == NULL) { 559 return status; 560 } 561 562 pthread_mutex_lock(&ma_listner_init_lock); 563 // check if the handle/context provided is valid 564 list_for_each_safe(node, temp_node_next, &ma_effect_list) { 565 context = node_to_item(node, struct ma_listener_context_s, effect_list_node); 566 if (context == recv_contex) { 567 ALOGV("--- Found something to remove ---"); 568 list_remove(node); 569 PRINT_STREAM_TYPE(context->stream_type); 570 free(context); 571 status = 0; 572 } 573 } 574 575 if (status != 0) { 576 ALOGE("%s: nothing to remove, ret %d", __func__, status); 577 pthread_mutex_unlock(&ma_listner_init_lock); 578 return status; 579 } 580 581 pthread_mutex_unlock(&ma_listner_init_lock); 582 return status; 583} 584 585static int ma_prc_lib_get_descriptor(const effect_uuid_t *uuid, 586 effect_descriptor_t *descriptor) 587{ 588 int i = 0; 589 590 ALOGV("%s .. called ..", __func__); 591 if (lib_init() != 0) { 592 return init_state; 593 } 594 595 if (descriptor == NULL || uuid == NULL) { 596 ALOGE("%s: %s is NULL", __func__, (descriptor == NULL) ? "descriptor" : "uuid"); 597 return -EINVAL; 598 } 599 600 for (i = 0; descriptors[i] != NULL; i++) { 601 if (memcmp(uuid, &descriptors[i]->uuid, sizeof(effect_uuid_t)) == 0) { 602 *descriptor = *descriptors[i]; 603 return 0; 604 } 605 } 606 607 ALOGE("%s: couldnt found uuid passed, oops", __func__); 608 return -EINVAL; 609} 610 611 612/* effect_handle_t interface implementation for volume listener effect */ 613static const struct effect_interface_s effect_interface = { 614 NULL, 615 ma_effect_command, 616 ma_effect_get_descriptor, 617 NULL, 618}; 619 620__attribute__((visibility("default"))) 621audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM = { 622 .tag = AUDIO_EFFECT_LIBRARY_TAG, 623 .version = EFFECT_LIBRARY_API_VERSION, 624 .name = "MAXXAUDIO Listener Effect Library", 625 .implementor = "The Android Open Source Project", 626 .create_effect = ma_prc_lib_create, 627 .release_effect = ma_prc_lib_release, 628 .get_descriptor = ma_prc_lib_get_descriptor, 629}; 630