| /* |
| * Copyright (C) 2013 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 "EffectLE" |
| //#define LOG_NDEBUG 0 |
| |
| #include <assert.h> |
| #include <math.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <time.h> |
| |
| #include <new> |
| |
| #include <log/log.h> |
| |
| #include <audio_effects/effect_loudnessenhancer.h> |
| #include "dsp/core/dynamic_range_compression.h" |
| |
| extern "C" { |
| |
| // effect_handle_t interface implementation for LE effect |
| extern const struct effect_interface_s gLEInterface; |
| |
| // AOSP Loudness Enhancer UUID: fa415329-2034-4bea-b5dc-5b381c8d1e2c |
| const effect_descriptor_t gLEDescriptor = { |
| {0xfe3199be, 0xaed0, 0x413f, 0x87bb, {0x11, 0x26, 0x0e, 0xb6, 0x3c, 0xf1}}, // type |
| {0xfa415329, 0x2034, 0x4bea, 0xb5dc, {0x5b, 0x38, 0x1c, 0x8d, 0x1e, 0x2c}}, // uuid |
| EFFECT_CONTROL_API_VERSION, |
| (EFFECT_FLAG_TYPE_INSERT | EFFECT_FLAG_INSERT_FIRST), |
| 0, // TODO |
| 1, |
| "Loudness Enhancer", |
| "The Android Open Source Project", |
| }; |
| |
| enum le_state_e { |
| LOUDNESS_ENHANCER_STATE_UNINITIALIZED, |
| LOUDNESS_ENHANCER_STATE_INITIALIZED, |
| LOUDNESS_ENHANCER_STATE_ACTIVE, |
| }; |
| |
| struct LoudnessEnhancerContext { |
| const struct effect_interface_s *mItfe; |
| effect_config_t mConfig; |
| uint8_t mState; |
| int32_t mTargetGainmB;// target gain in mB |
| // in this implementation, there is no coupling between the compression on the left and right |
| // channels |
| le_fx::AdaptiveDynamicRangeCompression* mCompressor; |
| }; |
| |
| // |
| //--- Local functions (not directly used by effect interface) |
| // |
| |
| void LE_reset(LoudnessEnhancerContext *pContext) |
| { |
| ALOGV(" > LE_reset(%p)", pContext); |
| |
| if (pContext->mCompressor != NULL) { |
| float targetAmp = pow(10, pContext->mTargetGainmB/2000.0f); // mB to linear amplification |
| ALOGV("LE_reset(): Target gain=%dmB <=> factor=%.2fX", pContext->mTargetGainmB, targetAmp); |
| pContext->mCompressor->Initialize(targetAmp, pContext->mConfig.inputCfg.samplingRate); |
| } else { |
| ALOGE("LE_reset(%p): null compressors, can't apply target gain", pContext); |
| } |
| } |
| |
| static inline int16_t clamp16(int32_t sample) |
| { |
| if ((sample>>15) ^ (sample>>31)) |
| sample = 0x7FFF ^ (sample>>31); |
| return sample; |
| } |
| |
| //---------------------------------------------------------------------------- |
| // LE_setConfig() |
| //---------------------------------------------------------------------------- |
| // Purpose: Set input and output audio configuration. |
| // |
| // Inputs: |
| // pContext: effect engine context |
| // pConfig: pointer to effect_config_t structure holding input and output |
| // configuration parameters |
| // |
| // Outputs: |
| // |
| //---------------------------------------------------------------------------- |
| |
| int LE_setConfig(LoudnessEnhancerContext *pContext, effect_config_t *pConfig) |
| { |
| ALOGV("LE_setConfig(%p)", pContext); |
| |
| if (pConfig->inputCfg.samplingRate != pConfig->outputCfg.samplingRate) return -EINVAL; |
| if (pConfig->inputCfg.channels != pConfig->outputCfg.channels) return -EINVAL; |
| if (pConfig->inputCfg.format != pConfig->outputCfg.format) return -EINVAL; |
| if (pConfig->inputCfg.channels != AUDIO_CHANNEL_OUT_STEREO) return -EINVAL; |
| if (pConfig->outputCfg.accessMode != EFFECT_BUFFER_ACCESS_WRITE && |
| pConfig->outputCfg.accessMode != EFFECT_BUFFER_ACCESS_ACCUMULATE) return -EINVAL; |
| if (pConfig->inputCfg.format != AUDIO_FORMAT_PCM_16_BIT) return -EINVAL; |
| |
| pContext->mConfig = *pConfig; |
| |
| LE_reset(pContext); |
| |
| return 0; |
| } |
| |
| |
| //---------------------------------------------------------------------------- |
| // LE_getConfig() |
| //---------------------------------------------------------------------------- |
| // Purpose: Get input and output audio configuration. |
| // |
| // Inputs: |
| // pContext: effect engine context |
| // pConfig: pointer to effect_config_t structure holding input and output |
| // configuration parameters |
| // |
| // Outputs: |
| // |
| //---------------------------------------------------------------------------- |
| |
| void LE_getConfig(LoudnessEnhancerContext *pContext, effect_config_t *pConfig) |
| { |
| *pConfig = pContext->mConfig; |
| } |
| |
| |
| //---------------------------------------------------------------------------- |
| // LE_init() |
| //---------------------------------------------------------------------------- |
| // Purpose: Initialize engine with default configuration. |
| // |
| // Inputs: |
| // pContext: effect engine context |
| // |
| // Outputs: |
| // |
| //---------------------------------------------------------------------------- |
| |
| int LE_init(LoudnessEnhancerContext *pContext) |
| { |
| ALOGV("LE_init(%p)", pContext); |
| |
| pContext->mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ; |
| pContext->mConfig.inputCfg.channels = AUDIO_CHANNEL_OUT_STEREO; |
| pContext->mConfig.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT; |
| pContext->mConfig.inputCfg.samplingRate = 44100; |
| pContext->mConfig.inputCfg.bufferProvider.getBuffer = NULL; |
| pContext->mConfig.inputCfg.bufferProvider.releaseBuffer = NULL; |
| pContext->mConfig.inputCfg.bufferProvider.cookie = NULL; |
| pContext->mConfig.inputCfg.mask = EFFECT_CONFIG_ALL; |
| pContext->mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE; |
| pContext->mConfig.outputCfg.channels = AUDIO_CHANNEL_OUT_STEREO; |
| pContext->mConfig.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT; |
| pContext->mConfig.outputCfg.samplingRate = 44100; |
| pContext->mConfig.outputCfg.bufferProvider.getBuffer = NULL; |
| pContext->mConfig.outputCfg.bufferProvider.releaseBuffer = NULL; |
| pContext->mConfig.outputCfg.bufferProvider.cookie = NULL; |
| pContext->mConfig.outputCfg.mask = EFFECT_CONFIG_ALL; |
| |
| pContext->mTargetGainmB = LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB; |
| float targetAmp = pow(10, pContext->mTargetGainmB/2000.0f); // mB to linear amplification |
| ALOGV("LE_init(): Target gain=%dmB <=> factor=%.2fX", pContext->mTargetGainmB, targetAmp); |
| |
| if (pContext->mCompressor == NULL) { |
| pContext->mCompressor = new le_fx::AdaptiveDynamicRangeCompression(); |
| pContext->mCompressor->Initialize(targetAmp, pContext->mConfig.inputCfg.samplingRate); |
| } |
| |
| LE_setConfig(pContext, &pContext->mConfig); |
| |
| return 0; |
| } |
| |
| // |
| //--- Effect Library Interface Implementation |
| // |
| |
| int LELib_Create(const effect_uuid_t *uuid, |
| int32_t sessionId __unused, |
| int32_t ioId __unused, |
| effect_handle_t *pHandle) { |
| ALOGV("LELib_Create()"); |
| int ret; |
| |
| if (pHandle == NULL || uuid == NULL) { |
| return -EINVAL; |
| } |
| |
| if (memcmp(uuid, &gLEDescriptor.uuid, sizeof(effect_uuid_t)) != 0) { |
| return -EINVAL; |
| } |
| |
| LoudnessEnhancerContext *pContext = new LoudnessEnhancerContext; |
| |
| pContext->mItfe = &gLEInterface; |
| pContext->mState = LOUDNESS_ENHANCER_STATE_UNINITIALIZED; |
| |
| pContext->mCompressor = NULL; |
| ret = LE_init(pContext); |
| if (ret < 0) { |
| ALOGW("LELib_Create() init failed"); |
| delete pContext; |
| return ret; |
| } |
| |
| *pHandle = (effect_handle_t)pContext; |
| |
| pContext->mState = LOUDNESS_ENHANCER_STATE_INITIALIZED; |
| |
| ALOGV(" LELib_Create context is %p", pContext); |
| |
| return 0; |
| |
| } |
| |
| int LELib_Release(effect_handle_t handle) { |
| LoudnessEnhancerContext * pContext = (LoudnessEnhancerContext *)handle; |
| |
| ALOGV("LELib_Release %p", handle); |
| if (pContext == NULL) { |
| return -EINVAL; |
| } |
| pContext->mState = LOUDNESS_ENHANCER_STATE_UNINITIALIZED; |
| if (pContext->mCompressor != NULL) { |
| delete pContext->mCompressor; |
| pContext->mCompressor = NULL; |
| } |
| delete pContext; |
| |
| return 0; |
| } |
| |
| int LELib_GetDescriptor(const effect_uuid_t *uuid, |
| effect_descriptor_t *pDescriptor) { |
| |
| if (pDescriptor == NULL || uuid == NULL){ |
| ALOGV("LELib_GetDescriptor() called with NULL pointer"); |
| return -EINVAL; |
| } |
| |
| if (memcmp(uuid, &gLEDescriptor.uuid, sizeof(effect_uuid_t)) == 0) { |
| *pDescriptor = gLEDescriptor; |
| return 0; |
| } |
| |
| return -EINVAL; |
| } /* end LELib_GetDescriptor */ |
| |
| // |
| //--- Effect Control Interface Implementation |
| // |
| int LE_process( |
| effect_handle_t self, audio_buffer_t *inBuffer, audio_buffer_t *outBuffer) |
| { |
| LoudnessEnhancerContext * pContext = (LoudnessEnhancerContext *)self; |
| |
| if (pContext == NULL) { |
| return -EINVAL; |
| } |
| |
| if (inBuffer == NULL || inBuffer->raw == NULL || |
| outBuffer == NULL || outBuffer->raw == NULL || |
| inBuffer->frameCount != outBuffer->frameCount || |
| inBuffer->frameCount == 0) { |
| return -EINVAL; |
| } |
| |
| //ALOGV("LE about to process %d samples", inBuffer->frameCount); |
| uint16_t inIdx; |
| float inputAmp = pow(10, pContext->mTargetGainmB/2000.0f); |
| float leftSample, rightSample; |
| for (inIdx = 0 ; inIdx < inBuffer->frameCount ; inIdx++) { |
| // makeup gain is applied on the input of the compressor |
| leftSample = inputAmp * (float)inBuffer->s16[2*inIdx]; |
| rightSample = inputAmp * (float)inBuffer->s16[2*inIdx +1]; |
| pContext->mCompressor->Compress(&leftSample, &rightSample); |
| inBuffer->s16[2*inIdx] = (int16_t) leftSample; |
| inBuffer->s16[2*inIdx +1] = (int16_t) rightSample; |
| } |
| |
| if (inBuffer->raw != outBuffer->raw) { |
| if (pContext->mConfig.outputCfg.accessMode == EFFECT_BUFFER_ACCESS_ACCUMULATE) { |
| for (size_t i = 0; i < outBuffer->frameCount*2; i++) { |
| outBuffer->s16[i] = clamp16(outBuffer->s16[i] + inBuffer->s16[i]); |
| } |
| } else { |
| memcpy(outBuffer->raw, inBuffer->raw, outBuffer->frameCount * 2 * sizeof(int16_t)); |
| } |
| } |
| if (pContext->mState != LOUDNESS_ENHANCER_STATE_ACTIVE) { |
| return -ENODATA; |
| } |
| return 0; |
| } |
| |
| int LE_command(effect_handle_t self, uint32_t cmdCode, uint32_t cmdSize, |
| void *pCmdData, uint32_t *replySize, void *pReplyData) { |
| |
| LoudnessEnhancerContext * pContext = (LoudnessEnhancerContext *)self; |
| |
| if (pContext == NULL || pContext->mState == LOUDNESS_ENHANCER_STATE_UNINITIALIZED) { |
| return -EINVAL; |
| } |
| |
| // ALOGV("LE_command command %d cmdSize %d",cmdCode, cmdSize); |
| switch (cmdCode) { |
| case EFFECT_CMD_INIT: |
| if (pReplyData == NULL || *replySize != sizeof(int)) { |
| return -EINVAL; |
| } |
| *(int *) pReplyData = LE_init(pContext); |
| break; |
| case EFFECT_CMD_SET_CONFIG: |
| if (pCmdData == NULL || cmdSize != sizeof(effect_config_t) |
| || pReplyData == NULL || replySize == NULL || *replySize != sizeof(int)) { |
| return -EINVAL; |
| } |
| *(int *) pReplyData = LE_setConfig(pContext, |
| (effect_config_t *) pCmdData); |
| break; |
| case EFFECT_CMD_GET_CONFIG: |
| if (pReplyData == NULL || |
| *replySize != sizeof(effect_config_t)) { |
| return -EINVAL; |
| } |
| LE_getConfig(pContext, (effect_config_t *)pReplyData); |
| break; |
| case EFFECT_CMD_RESET: |
| LE_reset(pContext); |
| break; |
| case EFFECT_CMD_ENABLE: |
| if (pReplyData == NULL || replySize == NULL || *replySize != sizeof(int)) { |
| return -EINVAL; |
| } |
| if (pContext->mState != LOUDNESS_ENHANCER_STATE_INITIALIZED) { |
| return -ENOSYS; |
| } |
| pContext->mState = LOUDNESS_ENHANCER_STATE_ACTIVE; |
| ALOGV("EFFECT_CMD_ENABLE() OK"); |
| *(int *)pReplyData = 0; |
| break; |
| case EFFECT_CMD_DISABLE: |
| if (pReplyData == NULL || *replySize != sizeof(int)) { |
| return -EINVAL; |
| } |
| if (pContext->mState != LOUDNESS_ENHANCER_STATE_ACTIVE) { |
| return -ENOSYS; |
| } |
| pContext->mState = LOUDNESS_ENHANCER_STATE_INITIALIZED; |
| ALOGV("EFFECT_CMD_DISABLE() OK"); |
| *(int *)pReplyData = 0; |
| break; |
| case EFFECT_CMD_GET_PARAM: { |
| if (pCmdData == NULL || |
| cmdSize != (int)(sizeof(effect_param_t) + sizeof(uint32_t)) || |
| pReplyData == NULL || replySize == NULL || |
| *replySize < (int)(sizeof(effect_param_t) + sizeof(uint32_t) + sizeof(uint32_t))) { |
| return -EINVAL; |
| } |
| memcpy(pReplyData, pCmdData, sizeof(effect_param_t) + sizeof(uint32_t)); |
| effect_param_t *p = (effect_param_t *)pReplyData; |
| p->status = 0; |
| *replySize = sizeof(effect_param_t) + sizeof(uint32_t); |
| if (p->psize != sizeof(uint32_t)) { |
| p->status = -EINVAL; |
| break; |
| } |
| switch (*(uint32_t *)p->data) { |
| case LOUDNESS_ENHANCER_PARAM_TARGET_GAIN_MB: |
| ALOGV("get target gain(mB) = %d", pContext->mTargetGainmB); |
| *((int32_t *)p->data + 1) = pContext->mTargetGainmB; |
| p->vsize = sizeof(int32_t); |
| *replySize += sizeof(int32_t); |
| break; |
| default: |
| p->status = -EINVAL; |
| } |
| } break; |
| case EFFECT_CMD_SET_PARAM: { |
| if (pCmdData == NULL || |
| cmdSize != (int)(sizeof(effect_param_t) + sizeof(uint32_t) + sizeof(uint32_t)) || |
| pReplyData == NULL || replySize == NULL || *replySize != sizeof(int32_t)) { |
| return -EINVAL; |
| } |
| *(int32_t *)pReplyData = 0; |
| effect_param_t *p = (effect_param_t *)pCmdData; |
| if (p->psize != sizeof(uint32_t) || p->vsize != sizeof(uint32_t)) { |
| *(int32_t *)pReplyData = -EINVAL; |
| break; |
| } |
| switch (*(uint32_t *)p->data) { |
| case LOUDNESS_ENHANCER_PARAM_TARGET_GAIN_MB: |
| pContext->mTargetGainmB = *((int32_t *)p->data + 1); |
| ALOGV("set target gain(mB) = %d", pContext->mTargetGainmB); |
| LE_reset(pContext); // apply parameter update |
| break; |
| default: |
| *(int32_t *)pReplyData = -EINVAL; |
| } |
| } break; |
| case EFFECT_CMD_SET_DEVICE: |
| case EFFECT_CMD_SET_VOLUME: |
| case EFFECT_CMD_SET_AUDIO_MODE: |
| break; |
| |
| default: |
| ALOGW("LE_command invalid command %d",cmdCode); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /* Effect Control Interface Implementation: get_descriptor */ |
| int LE_getDescriptor(effect_handle_t self, |
| effect_descriptor_t *pDescriptor) |
| { |
| LoudnessEnhancerContext * pContext = (LoudnessEnhancerContext *) self; |
| |
| if (pContext == NULL || pDescriptor == NULL) { |
| ALOGV("LE_getDescriptor() invalid param"); |
| return -EINVAL; |
| } |
| |
| *pDescriptor = gLEDescriptor; |
| |
| return 0; |
| } /* end LE_getDescriptor */ |
| |
| // effect_handle_t interface implementation for DRC effect |
| const struct effect_interface_s gLEInterface = { |
| LE_process, |
| LE_command, |
| LE_getDescriptor, |
| NULL, |
| }; |
| |
| // This is the only symbol that needs to be exported |
| __attribute__ ((visibility ("default"))) |
| audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM = { |
| .tag = AUDIO_EFFECT_LIBRARY_TAG, |
| .version = EFFECT_LIBRARY_API_VERSION, |
| .name = "Loudness Enhancer Library", |
| .implementor = "The Android Open Source Project", |
| .create_effect = LELib_Create, |
| .release_effect = LELib_Release, |
| .get_descriptor = LELib_GetDescriptor, |
| }; |
| |
| }; // extern "C" |
| |