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115 lines
4.1 KiB
115 lines
4.1 KiB
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_EFFECTDOWNMIX_H_
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#define ANDROID_EFFECTDOWNMIX_H_
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#include <audio_effects/effect_downmix.h>
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#include <audio_utils/primitives.h>
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#include <system/audio.h>
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/*------------------------------------
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* definitions
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*------------------------------------
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*/
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#define DOWNMIX_OUTPUT_CHANNELS AUDIO_CHANNEL_OUT_STEREO
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#ifdef BUILD_FLOAT
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#define LVM_FLOAT float
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#endif
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typedef enum {
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DOWNMIX_STATE_UNINITIALIZED,
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DOWNMIX_STATE_INITIALIZED,
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DOWNMIX_STATE_ACTIVE,
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} downmix_state_t;
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/* parameters for each downmixer */
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typedef struct {
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downmix_state_t state;
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downmix_type_t type;
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bool apply_volume_correction;
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uint8_t input_channel_count;
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} downmix_object_t;
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typedef struct downmix_module_s {
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const struct effect_interface_s *itfe;
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effect_config_t config;
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downmix_object_t context;
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} downmix_module_t;
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const uint32_t kSides = AUDIO_CHANNEL_OUT_SIDE_LEFT | AUDIO_CHANNEL_OUT_SIDE_RIGHT;
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const uint32_t kBacks = AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT;
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const uint32_t kUnsupported =
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AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER |
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AUDIO_CHANNEL_OUT_TOP_CENTER |
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AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT |
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AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER |
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AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT |
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AUDIO_CHANNEL_OUT_TOP_BACK_LEFT |
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AUDIO_CHANNEL_OUT_TOP_BACK_CENTER |
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AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT;
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/*------------------------------------
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* Effect API
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*------------------------------------
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*/
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int32_t DownmixLib_Create(const effect_uuid_t *uuid,
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int32_t sessionId,
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int32_t ioId,
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effect_handle_t *pHandle);
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int32_t DownmixLib_Release(effect_handle_t handle);
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int32_t DownmixLib_GetDescriptor(const effect_uuid_t *uuid,
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effect_descriptor_t *pDescriptor);
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static int Downmix_Process(effect_handle_t self,
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audio_buffer_t *inBuffer,
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audio_buffer_t *outBuffer);
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static int Downmix_Command(effect_handle_t self,
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uint32_t cmdCode,
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uint32_t cmdSize,
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void *pCmdData,
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uint32_t *replySize,
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void *pReplyData);
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static int Downmix_GetDescriptor(effect_handle_t self,
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effect_descriptor_t *pDescriptor);
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/*------------------------------------
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* internal functions
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*------------------------------------
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*/
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int Downmix_Init(downmix_module_t *pDwmModule);
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int Downmix_Configure(downmix_module_t *pDwmModule, effect_config_t *pConfig, bool init);
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int Downmix_Reset(downmix_object_t *pDownmixer, bool init);
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int Downmix_setParameter(downmix_object_t *pDownmixer, int32_t param, uint32_t size, void *pValue);
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int Downmix_getParameter(downmix_object_t *pDownmixer, int32_t param, uint32_t *pSize, void *pValue);
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#ifdef BUILD_FLOAT
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void Downmix_foldFromQuad(LVM_FLOAT *pSrc, LVM_FLOAT *pDst, size_t numFrames, bool accumulate);
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void Downmix_foldFrom5Point1(LVM_FLOAT *pSrc, LVM_FLOAT *pDst, size_t numFrames, bool accumulate);
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void Downmix_foldFrom7Point1(LVM_FLOAT *pSrc, LVM_FLOAT *pDst, size_t numFrames, bool accumulate);
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bool Downmix_foldGeneric(
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uint32_t mask, LVM_FLOAT *pSrc, LVM_FLOAT *pDst, size_t numFrames, bool accumulate);
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#else
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void Downmix_foldFromQuad(int16_t *pSrc, int16_t*pDst, size_t numFrames, bool accumulate);
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void Downmix_foldFrom5Point1(int16_t *pSrc, int16_t*pDst, size_t numFrames, bool accumulate);
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void Downmix_foldFrom7Point1(int16_t *pSrc, int16_t*pDst, size_t numFrames, bool accumulate);
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bool Downmix_foldGeneric(
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uint32_t mask, int16_t *pSrc, int16_t*pDst, size_t numFrames, bool accumulate);
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#endif
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#endif /*ANDROID_EFFECTDOWNMIX_H_*/
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