| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "ma_listener" |
| /*#define LOG_NDEBUG 0*/ |
| |
| #include <stdlib.h> |
| #include <dlfcn.h> |
| #include <math.h> |
| #include <pthread.h> |
| #include <unistd.h> |
| #include <cutils/list.h> |
| #include <cutils/log.h> |
| #include <hardware/audio_effect.h> |
| #include <audio-base.h> |
| |
| #define MA_FLAG ( EFFECT_FLAG_TYPE_INSERT | \ |
| EFFECT_FLAG_VOLUME_IND | \ |
| EFFECT_FLAG_DEVICE_IND | \ |
| EFFECT_FLAG_OFFLOAD_SUPPORTED | \ |
| EFFECT_FLAG_NO_PROCESS) |
| |
| #define PRINT_STREAM_TYPE(i) ALOGV("descriptor found and is of stream type %s ",\ |
| i == AUDIO_STREAM_MUSIC ? "MUSIC": \ |
| i == AUDIO_STREAM_RING ? "RING": \ |
| i == AUDIO_STREAM_ALARM ? "ALARM": \ |
| i == AUDIO_STREAM_VOICE_CALL ? "Voice_call": \ |
| i == AUDIO_STREAM_SYSTEM ? "SYSTEM": \ |
| i == AUDIO_STREAM_NOTIFICATION ? "Notification":\ |
| "--INVALID--"); \ |
| |
| #define MA_SET_STATE "audio_hw_send_ma_parameter" |
| #define HAL_VENDOR_PATH "/vendor/lib/hw" |
| |
| enum { |
| MA_LISTENER_STATE_UNINITIALIZED, |
| MA_LISTENER_STATE_INITIALIZED, |
| MA_LISTENER_STATE_ACTIVE, |
| }; |
| |
| typedef struct ma_listener_context_s ma_listener_context_t; |
| static const struct effect_interface_s effect_interface; |
| |
| struct ma_state { |
| float vol; |
| bool active; |
| }; |
| |
| static const audio_stream_type_t MIN_STREAM_TYPES = AUDIO_STREAM_VOICE_CALL; |
| static const audio_stream_type_t MAX_STREAM_TYPES = AUDIO_STREAM_NOTIFICATION; |
| static struct ma_state g_cur_state[MAX_STREAM_TYPES + 1]; |
| |
| struct ma_listener_context_s { |
| const struct effect_interface_s *itfe; |
| struct listnode effect_list_node; |
| effect_config_t config; |
| const effect_descriptor_t *desc; |
| uint32_t stream_type; |
| uint32_t session_id; |
| uint32_t state; |
| uint32_t dev_id; |
| float left_vol; |
| float right_vol; |
| }; |
| |
| /* voice UUID: 4ece09c2-3728-11e8-a9f9-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_voice_descriptor = { |
| { 0x46f924ed, 0x25c3, 0x4272, 0x85b1, { 0x41, 0x78, 0x3f, 0x0d, 0xc6, 0x38 } }, // type |
| { 0x4ece09c2, 0x3728, 0x11e8, 0xa9f9, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for Voice", |
| "The Android Open Source Project", |
| }; |
| |
| /* system UUID: 4f705ff6-3728-11e8-a0c6-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_system_descriptor = { |
| { 0x8bd0f979, 0x5266, 0x4791, 0x9213, { 0x11, 0x3a, 0xbc, 0xf7, 0xd3, 0xdc } }, // type |
| { 0x4f705ff6, 0x3728, 0x11e8, 0xa0c6, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for System", |
| "The Android Open Source Project", |
| }; |
| |
| /* ring UUID: 4fd6e5c8-3728-11e8-8303-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_ring_descriptor = { |
| { 0x5380692a, 0x872e, 0x4697, 0x8e38, { 0xcd, 0xd1, 0x09, 0xf6, 0xcb, 0x87 } }, // type |
| { 0x4fd6e5c8, 0x3728, 0x11e8, 0x8303, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for Ring", |
| "The Android Open Source Project", |
| }; |
| /* music UUID: 5036194e-3728-11e8-8db9-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_music_descriptor = { |
| { 0x3a3a19b2, 0x62b1, 0x4785, 0xb55e, { 0xb2, 0x8f, 0xd4, 0x1b, 0x83, 0x58 } }, // type |
| { 0x5036194e, 0x3728, 0x11e8, 0x8db9, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for Music", |
| "The Android Open Source Project", |
| }; |
| /* alarm UUID: 50b9f084-3728-11e8-9225-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_alarm_descriptor = { |
| { 0x8d08d30f, 0xb4c3, 0x4600, 0x8f99, { 0xfc, 0xbb, 0x5d, 0x05, 0x8b, 0x60 } }, // type |
| { 0x50b9f084, 0x3728, 0x11e8, 0x9225, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for Alarm", |
| "The Android Open Source Project", |
| }; |
| /* notification UUID: 50fe4d56-3728-11e8-ac73-fc4dd4486b6d */ |
| const effect_descriptor_t ma_listener_notification_descriptor = { |
| { 0x513d09f5, 0xae7f, 0x483d, 0x922a, { 0x5c, 0x72, 0xc5, 0xe5, 0x68, 0x4c } }, // type |
| { 0x50fe4d56, 0x3728, 0x11e8, 0xac73, { 0xfc, 0x4d, 0xd4, 0x48, 0x6b, 0x6d } }, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| MA_FLAG, |
| 0, /* TODO */ |
| 1, |
| "MAXXAUDIO listener for Notification", |
| "The Android Open Source Project", |
| }; |
| |
| static const effect_descriptor_t *descriptors[] = { |
| &ma_listener_voice_descriptor, |
| &ma_listener_system_descriptor, |
| &ma_listener_ring_descriptor, |
| &ma_listener_music_descriptor, |
| &ma_listener_alarm_descriptor, |
| &ma_listener_notification_descriptor, |
| NULL, |
| }; |
| |
| /* function of sending state to HAL */ |
| static bool (*send_ma_parameter)(int, float, bool); |
| |
| static int init_state = -1; |
| pthread_once_t once = PTHREAD_ONCE_INIT; |
| |
| struct listnode ma_effect_list; |
| pthread_mutex_t ma_listner_init_lock; |
| |
| /* |
| * Local functions |
| */ |
| static inline bool valid_dev_in_context(struct ma_listener_context_s *context) |
| { |
| /* check device */ |
| if ((context->dev_id & AUDIO_DEVICE_OUT_SPEAKER) || |
| (context->dev_id & AUDIO_DEVICE_OUT_SPEAKER_SAFE) || |
| /* TODO: it should be dynamic if hybird split A2SP is implemented. */ |
| (context->dev_id & AUDIO_DEVICE_OUT_ALL_A2DP) || |
| (context->dev_id & AUDIO_DEVICE_OUT_ALL_USB)) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static void check_and_set_ma_parameter(uint32_t stream_type) |
| { |
| bool active = false; |
| float temp_vol = 0.0; |
| float max_vol = 0.0; |
| struct listnode *node = NULL; |
| ma_listener_context_t *context = NULL; |
| |
| ALOGV("%s .. called ..", __func__); |
| // get maximum volume for the active session with same strem type |
| list_for_each(node, &ma_effect_list) { |
| context = node_to_item(node, struct ma_listener_context_s, effect_list_node); |
| if (context->stream_type == stream_type && |
| valid_dev_in_context(context)) { |
| if (context->state == MA_LISTENER_STATE_ACTIVE) { |
| active = true; |
| temp_vol = fmax(context->left_vol, context->right_vol); |
| if (max_vol < temp_vol) |
| max_vol = temp_vol; |
| ALOGV("%s: check session(%d) volume(%f) for stream(%d)", |
| __func__, context->session_id, temp_vol, stream_type); |
| } |
| } |
| } |
| |
| // check volume |
| if (max_vol < 0.0) max_vol = 0; |
| else if (max_vol > 1.0) max_vol = 1.0; |
| |
| if (send_ma_parameter != NULL && |
| stream_type >= MIN_STREAM_TYPES && |
| stream_type <= MAX_STREAM_TYPES && |
| (g_cur_state[stream_type].vol != max_vol || |
| g_cur_state[stream_type].active != active)) { |
| |
| ALOGV("%s: set stream(%d) active(%s->%s) volume(%f->%f)", |
| __func__, stream_type, |
| g_cur_state[stream_type].active ? "T" : "F", active ? "T" : "F", |
| g_cur_state[stream_type].vol, max_vol); |
| |
| // update changes to hal |
| send_ma_parameter(stream_type, max_vol, active); |
| g_cur_state[stream_type].vol = max_vol; |
| g_cur_state[stream_type].active = active; |
| } |
| |
| return; |
| } |
| |
| /* |
| * Effect Control Interface Implementation |
| */ |
| static int ma_effect_command(effect_handle_t self, |
| uint32_t cmd_code, uint32_t cmd_size, |
| void *p_cmd_data, uint32_t *reply_size, |
| void *p_reply_data) |
| { |
| ma_listener_context_t *context = (ma_listener_context_t *)self; |
| int status = 0; |
| |
| ALOGV("%s .. called ..", __func__); |
| pthread_mutex_lock(&ma_listner_init_lock); |
| |
| if (context == NULL || context->state == MA_LISTENER_STATE_UNINITIALIZED) { |
| ALOGE("%s: %s is NULL", __func__, (context == NULL) ? |
| "context" : "context->state"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| switch (cmd_code) { |
| case EFFECT_CMD_INIT: |
| ALOGV("%s :: cmd called EFFECT_CMD_INIT", __func__); |
| if (p_reply_data == NULL || *reply_size != sizeof(int)) { |
| ALOGE("%s: EFFECT_CMD_INIT: %s, sending -EINVAL", __func__, |
| (p_reply_data == NULL) ? "p_reply_data is NULL" : |
| "*reply_size != sizeof(int)"); |
| status = -EINVAL; |
| goto exit; |
| } |
| *(int *)p_reply_data = 0; |
| break; |
| |
| case EFFECT_CMD_SET_CONFIG: |
| ALOGV("%s :: cmd called EFFECT_CMD_SET_CONFIG", __func__); |
| if (p_cmd_data == NULL || cmd_size != sizeof(effect_config_t) |
| || p_reply_data == NULL || reply_size == NULL || *reply_size != sizeof(int)) { |
| status = -EINVAL; |
| goto exit; |
| } |
| context->config = *(effect_config_t *)p_cmd_data; |
| *(int *)p_reply_data = 0; |
| break; |
| |
| case EFFECT_CMD_GET_CONFIG: |
| ALOGV("%s :: cmd called EFFECT_CMD_GET_CONFIG", __func__); |
| break; |
| |
| case EFFECT_CMD_RESET: |
| ALOGV("%s :: cmd called EFFECT_CMD_RESET", __func__); |
| break; |
| |
| case EFFECT_CMD_SET_AUDIO_MODE: |
| ALOGV("%s :: cmd called EFFECT_CMD_SET_AUDIO_MODE", __func__); |
| break; |
| |
| case EFFECT_CMD_OFFLOAD: |
| ALOGV("%s :: cmd called EFFECT_CMD_OFFLOAD", __func__); |
| if (p_reply_data == NULL || *reply_size != sizeof(int)) { |
| ALOGE("%s: EFFECT_CMD_OFFLOAD: %s, sending -EINVAL", __func__, |
| (p_reply_data == NULL) ? "p_reply_data is NULL" : |
| "*reply_size != sizeof(int)"); |
| status = -EINVAL; |
| goto exit; |
| } |
| *(int *)p_reply_data = 0; |
| break; |
| |
| case EFFECT_CMD_ENABLE: |
| ALOGV("%s :: cmd called EFFECT_CMD_ENABLE", __func__); |
| if (p_reply_data == NULL || *reply_size != sizeof(int)) { |
| ALOGE("%s: EFFECT_CMD_ENABLE: %s, sending -EINVAL", __func__, |
| (p_reply_data == NULL) ? "p_reply_data is NULL" : |
| "*reply_size != sizeof(int)"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| if (context->state != MA_LISTENER_STATE_INITIALIZED) { |
| ALOGE("%s: EFFECT_CMD_ENABLE : state not INITIALIZED", __func__); |
| status = -ENOSYS; |
| goto exit; |
| } |
| |
| context->state = MA_LISTENER_STATE_ACTIVE; |
| *(int *)p_reply_data = 0; |
| |
| // After changing the state and if device is valid |
| // check and send state |
| if (valid_dev_in_context(context)) { |
| check_and_set_ma_parameter(context->stream_type); |
| } |
| |
| break; |
| |
| case EFFECT_CMD_DISABLE: |
| ALOGV("%s :: cmd called EFFECT_CMD_DISABLE", __func__); |
| if (p_reply_data == NULL || *reply_size != sizeof(int)) { |
| ALOGE("%s: EFFECT_CMD_DISABLE: %s, sending -EINVAL", __func__, |
| (p_reply_data == NULL) ? "p_reply_data is NULL" : |
| "*reply_size != sizeof(int)"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| if (context->state != MA_LISTENER_STATE_ACTIVE) { |
| ALOGE("%s: EFFECT_CMD_ENABLE : state not ACTIVE", __func__); |
| status = -ENOSYS; |
| goto exit; |
| } |
| |
| context->state = MA_LISTENER_STATE_INITIALIZED; |
| *(int *)p_reply_data = 0; |
| |
| // After changing the state and if device is valid |
| // check and send state |
| if (valid_dev_in_context(context)) { |
| check_and_set_ma_parameter(context->stream_type); |
| } |
| |
| break; |
| |
| case EFFECT_CMD_GET_PARAM: |
| ALOGV("%s :: cmd called EFFECT_CMD_GET_PARAM", __func__); |
| break; |
| |
| case EFFECT_CMD_SET_PARAM: |
| ALOGV("%s :: cmd called EFFECT_CMD_SET_PARAM", __func__); |
| break; |
| |
| case EFFECT_CMD_SET_DEVICE: |
| { |
| uint32_t new_device; |
| |
| if (p_cmd_data == NULL) { |
| ALOGE("%s: EFFECT_CMD_SET_DEVICE: cmd data NULL", __func__); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| new_device = *(uint32_t *)p_cmd_data; |
| ALOGV("%s :: EFFECT_CMD_SET_DEVICE: (current/new) device (0x%x / 0x%x)", |
| __func__, context->dev_id, new_device); |
| |
| context->dev_id = new_device; |
| // After changing the state and if device is valid |
| // check and send parameter |
| if (valid_dev_in_context(context)) { |
| check_and_set_ma_parameter(context->stream_type); |
| } |
| } |
| break; |
| |
| case EFFECT_CMD_SET_VOLUME: |
| { |
| float left_vol = 0, right_vol = 0; |
| |
| ALOGV("cmd called EFFECT_CMD_SET_VOLUME"); |
| if (p_cmd_data == NULL || cmd_size != 2 * sizeof(uint32_t)) { |
| ALOGE("%s: EFFECT_CMD_SET_VOLUME: %s", __func__, (p_cmd_data == NULL) ? |
| "p_cmd_data is NULL" : "cmd_size issue"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| left_vol = (float)(*(uint32_t *)p_cmd_data) / (1 << 24); |
| right_vol = (float)(*((uint32_t *)p_cmd_data + 1)) / (1 << 24); |
| ALOGV("Current Volume (%f / %f ) new Volume (%f / %f)", context->left_vol, |
| context->right_vol, left_vol, right_vol); |
| |
| context->left_vol = left_vol; |
| context->right_vol = right_vol; |
| |
| // After changing the state and if device is valid |
| // check and send volume |
| if (valid_dev_in_context(context)) { |
| check_and_set_ma_parameter(context->stream_type); |
| } |
| } |
| break; |
| |
| default: |
| ALOGW("%s: unknow command %d", __func__, cmd_code); |
| status = -ENOSYS; |
| break; |
| } |
| |
| exit: |
| pthread_mutex_unlock(&ma_listner_init_lock); |
| return status; |
| } |
| |
| /* Effect Control Interface Implementation: get_descriptor */ |
| static int ma_effect_get_descriptor(effect_handle_t self, |
| effect_descriptor_t *descriptor) |
| { |
| ma_listener_context_t *context = (ma_listener_context_t *)self; |
| ALOGV("%s .. called ..", __func__); |
| |
| if (descriptor == NULL) { |
| ALOGE("%s: descriptor is NULL", __func__); |
| return -EINVAL; |
| } |
| |
| *descriptor = *context->desc; |
| return 0; |
| } |
| |
| static void init_once() |
| { |
| int ret = 0; |
| void *handle = NULL; |
| char lib_path[PATH_MAX] = {0}; |
| |
| if (init_state == 0) { |
| ALOGD("%s : already init ... do nothing", __func__); |
| return; |
| } |
| |
| ALOGV("%s .. called ..", __func__); |
| |
| send_ma_parameter = NULL; |
| |
| ret = snprintf(lib_path, PATH_MAX, "%s/%s", HAL_VENDOR_PATH, HAL_LIB_NAME); |
| if (ret < 0) { |
| ALOGE("%s: snprintf failed for lib %s ret %d", __func__, HAL_LIB_NAME, ret); |
| return; |
| } |
| |
| handle = dlopen(lib_path, RTLD_NOW); |
| if (handle == NULL) { |
| ALOGE("%s: DLOPEN failed for %s", __func__, HAL_LIB_NAME); |
| return; |
| } else { |
| ALOGV("%s: DLOPEN successful for %s", __func__, HAL_LIB_NAME); |
| send_ma_parameter = (bool (*)(int, float, bool))dlsym(handle, MA_SET_STATE); |
| |
| if (!send_ma_parameter) { |
| ALOGE("%s: dlsym error %s for send_ma_parameter", __func__, dlerror()); |
| return; |
| } |
| } |
| |
| pthread_mutex_init(&ma_listner_init_lock, NULL); |
| list_init(&ma_effect_list); |
| init_state = 0; |
| |
| ALOGD("%s: exit ret %d", __func__, init_state); |
| } |
| |
| static bool lib_init() |
| { |
| pthread_once(&once, init_once); |
| return init_state; |
| } |
| |
| static int ma_prc_lib_create(const effect_uuid_t *uuid, |
| int32_t session_id, |
| int32_t io_id __unused, |
| effect_handle_t *p_handle) |
| { |
| int itt = 0; |
| ma_listener_context_t *context = NULL; |
| |
| ALOGV("%s .. called ..", __func__); |
| |
| if (lib_init() != 0) { |
| return init_state; |
| } |
| |
| if (p_handle == NULL || uuid == NULL) { |
| ALOGE("%s: %s is NULL", __func__, (p_handle == NULL) ? "p_handle" : "uuid"); |
| return -EINVAL; |
| } |
| |
| context = (ma_listener_context_t *)calloc(1, sizeof(ma_listener_context_t)); |
| |
| if (context == NULL) { |
| ALOGE("%s: failed to allocate for context .. oops !!", __func__); |
| return -EINVAL; |
| } |
| |
| // check if UUID is supported |
| for (itt = 0; descriptors[itt] != NULL; itt++) { |
| if (memcmp(uuid, &descriptors[itt]->uuid, sizeof(effect_uuid_t)) == 0) { |
| context->desc = descriptors[itt]; |
| context->stream_type = itt; |
| PRINT_STREAM_TYPE(itt) |
| break; |
| } |
| } |
| |
| if (descriptors[itt] == NULL) { |
| ALOGE("%s .. couldnt find passed uuid, something wrong", __func__); |
| free(context); |
| return -EINVAL; |
| } |
| |
| ALOGV("%s CREATED_CONTEXT %p", __func__, context); |
| |
| context->itfe = &effect_interface; |
| context->state = MA_LISTENER_STATE_INITIALIZED; |
| context->dev_id = AUDIO_DEVICE_NONE; |
| context->session_id = session_id; |
| |
| // Add this to master list |
| pthread_mutex_lock(&ma_listner_init_lock); |
| list_add_tail(&ma_effect_list, &context->effect_list_node); |
| |
| pthread_mutex_unlock(&ma_listner_init_lock); |
| |
| *p_handle = (effect_handle_t)context; |
| return 0; |
| } |
| |
| static int ma_prc_lib_release(effect_handle_t handle) |
| { |
| struct listnode *node, *temp_node_next; |
| ma_listener_context_t *context = NULL; |
| ma_listener_context_t *recv_contex = (ma_listener_context_t *)handle; |
| int status = -EINVAL; |
| |
| ALOGV("%s: context %p", __func__, handle); |
| |
| if (recv_contex == NULL) { |
| return status; |
| } |
| |
| pthread_mutex_lock(&ma_listner_init_lock); |
| // check if the handle/context provided is valid |
| list_for_each_safe(node, temp_node_next, &ma_effect_list) { |
| context = node_to_item(node, struct ma_listener_context_s, effect_list_node); |
| if (context == recv_contex) { |
| ALOGV("--- Found something to remove ---"); |
| list_remove(node); |
| PRINT_STREAM_TYPE(context->stream_type); |
| free(context); |
| status = 0; |
| } |
| } |
| |
| if (status != 0) { |
| ALOGE("%s: nothing to remove, ret %d", __func__, status); |
| pthread_mutex_unlock(&ma_listner_init_lock); |
| return status; |
| } |
| |
| pthread_mutex_unlock(&ma_listner_init_lock); |
| return status; |
| } |
| |
| static int ma_prc_lib_get_descriptor(const effect_uuid_t *uuid, |
| effect_descriptor_t *descriptor) |
| { |
| int i = 0; |
| |
| ALOGV("%s .. called ..", __func__); |
| if (lib_init() != 0) { |
| return init_state; |
| } |
| |
| if (descriptor == NULL || uuid == NULL) { |
| ALOGE("%s: %s is NULL", __func__, (descriptor == NULL) ? "descriptor" : "uuid"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; descriptors[i] != NULL; i++) { |
| if (memcmp(uuid, &descriptors[i]->uuid, sizeof(effect_uuid_t)) == 0) { |
| *descriptor = *descriptors[i]; |
| return 0; |
| } |
| } |
| |
| ALOGE("%s: couldnt found uuid passed, oops", __func__); |
| return -EINVAL; |
| } |
| |
| |
| /* effect_handle_t interface implementation for volume listener effect */ |
| static const struct effect_interface_s effect_interface = { |
| NULL, |
| ma_effect_command, |
| ma_effect_get_descriptor, |
| NULL, |
| }; |
| |
| __attribute__((visibility("default"))) |
| audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM = { |
| .tag = AUDIO_EFFECT_LIBRARY_TAG, |
| .version = EFFECT_LIBRARY_API_VERSION, |
| .name = "MAXXAUDIO Listener Effect Library", |
| .implementor = "The Android Open Source Project", |
| .create_effect = ma_prc_lib_create, |
| .release_effect = ma_prc_lib_release, |
| .get_descriptor = ma_prc_lib_get_descriptor, |
| }; |