136 lines
5.2 KiB
C++
136 lines
5.2 KiB
C++
/*
|
|
* Copyright (C) 2020 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.
|
|
*/
|
|
|
|
#ifndef ANDROID_EFFECTHAPTICGENERATOR_H_
|
|
#define ANDROID_EFFECTHAPTICGENERATOR_H_
|
|
|
|
#include <functional>
|
|
#include <vector>
|
|
#include <map>
|
|
|
|
#include <hardware/audio_effect.h>
|
|
#include <system/audio_effect.h>
|
|
#include <vibrator/ExternalVibrationUtils.h>
|
|
|
|
#include "Processors.h"
|
|
|
|
namespace android::audio_effect::haptic_generator {
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Definition
|
|
//-----------------------------------------------------------------------------
|
|
|
|
enum hapticgenerator_state_t {
|
|
HAPTICGENERATOR_STATE_UNINITIALIZED,
|
|
HAPTICGENERATOR_STATE_INITIALIZED,
|
|
HAPTICGENERATOR_STATE_ACTIVE,
|
|
};
|
|
|
|
// parameters for each haptic generator
|
|
struct HapticGeneratorParam {
|
|
uint32_t hapticChannelSource[2]; // The audio channels used to generate haptic channels.
|
|
// The first channel will be used to generate HAPTIC_A,
|
|
// The second channel will be used to generate HAPTIC_B
|
|
// The value will be offset of audio channel
|
|
uint32_t audioChannelCount;
|
|
uint32_t hapticChannelCount;
|
|
|
|
// A map from track id to haptic intensity.
|
|
std::map<int, os::HapticScale> id2Intensity;
|
|
os::HapticScale maxHapticIntensity; // max intensity will be used to scale haptic data.
|
|
float maxHapticAmplitude; // max amplitude will be used to limit haptic data absolute values.
|
|
|
|
float resonantFrequency;
|
|
float bpfQ;
|
|
float slowEnvNormalizationPower;
|
|
float bsfZeroQ;
|
|
float bsfPoleQ;
|
|
float distortionCornerFrequency;
|
|
float distortionInputGain;
|
|
float distortionCubeThreshold;
|
|
float distortionOutputGain;
|
|
};
|
|
|
|
// A structure to keep all shared pointers for all processors in HapticGenerator.
|
|
struct HapticGeneratorProcessorsRecord {
|
|
std::vector<std::shared_ptr<HapticBiquadFilter>> filters;
|
|
std::vector<std::shared_ptr<Ramp>> ramps;
|
|
std::vector<std::shared_ptr<SlowEnvelope>> slowEnvs;
|
|
std::vector<std::shared_ptr<Distortion>> distortions;
|
|
|
|
// Cache band-pass filter and band-stop filter for updating parameters
|
|
// according to vibrator info
|
|
std::shared_ptr<HapticBiquadFilter> bpf;
|
|
std::shared_ptr<HapticBiquadFilter> bsf;
|
|
};
|
|
|
|
// A structure to keep all the context for HapticGenerator.
|
|
struct HapticGeneratorContext {
|
|
const struct effect_interface_s *itfe;
|
|
effect_config_t config;
|
|
hapticgenerator_state_t state;
|
|
struct HapticGeneratorParam param;
|
|
size_t audioDataBytesPerFrame;
|
|
|
|
// A cache for all shared pointers of the HapticGenerator
|
|
struct HapticGeneratorProcessorsRecord processorsRecord;
|
|
|
|
// Using a vector of functions to record the processing chain for haptic-generating algorithm.
|
|
// The three parameters of the processing functions are pointer to output buffer, pointer to
|
|
// input buffer and frame count.
|
|
std::vector<std::function<void(float*, const float*, size_t)>> processingChain;
|
|
|
|
// inputBuffer is where to keep input buffer for the generating algorithm. It will be
|
|
// constructed according to HapticGeneratorParam.hapticChannelSource.
|
|
std::vector<float> inputBuffer;
|
|
|
|
// outputBuffer is a buffer having the same length as inputBuffer. It can be used as
|
|
// intermediate buffer in the generating algorithm.
|
|
std::vector<float> outputBuffer;
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Effect API
|
|
//-----------------------------------------------------------------------------
|
|
|
|
int32_t HapticGeneratorLib_Create(const effect_uuid_t *uuid,
|
|
int32_t sessionId,
|
|
int32_t ioId,
|
|
effect_handle_t *handle);
|
|
|
|
int32_t HapticGeneratorLib_Release(effect_handle_t handle);
|
|
|
|
int32_t HapticGeneratorLib_GetDescriptor(const effect_uuid_t *uuid,
|
|
effect_descriptor_t *descriptor);
|
|
|
|
int32_t HapticGenerator_Process(effect_handle_t self,
|
|
audio_buffer_t *inBuffer,
|
|
audio_buffer_t *outBuffer);
|
|
|
|
int32_t HapticGenerator_Command(effect_handle_t self,
|
|
uint32_t cmdCode,
|
|
uint32_t cmdSize,
|
|
void *cmdData,
|
|
uint32_t *replySize,
|
|
void *replyData);
|
|
|
|
int32_t HapticGenerator_GetDescriptor(effect_handle_t self,
|
|
effect_descriptor_t *descriptor);
|
|
|
|
} // namespace android::audio_effect::haptic_generator
|
|
|
|
#endif // ANDROID_EFFECTHAPTICGENERATOR_H_
|