services/audioflinger/IAfEffect.h - LeafOS-Project/android_frameworks_av - Gitiles

 /*
  * Copyright (C) 2023 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.
  */

 #pragma once

 #include "IAfPatchPanel.h"  // full class Patch definition needed

 #include <android/media/AudioVibratorInfo.h>
 #include <android/media/BnEffect.h>
 #include <android/media/BnEffectClient.h>
 #include <audio_utils/mutex.h>
 #include <media/AudioCommonTypes.h>  // product_strategy_t
 #include <media/AudioDeviceTypeAddr.h>
 #include <media/audiohal/EffectHalInterface.h>
 #include <utils/RefBase.h>
 #include <vibrator/ExternalVibration.h>

 namespace android {

 class Client;
 class DeviceEffectManagerCallback;

 class IAfDeviceEffectProxy;
 class IAfEffectBase;
 class IAfEffectChain;
 class IAfEffectHandle;
 class IAfEffectModule;
 class IAfThreadBase;

 // Interface implemented by the EffectModule parent or owner (e.g an EffectChain) to abstract
 // interactions between the EffectModule and the reset of the audio framework.
 class EffectCallbackInterface : public RefBase {
 public:
     // Trivial methods usually implemented with help from ThreadBase
     virtual audio_io_handle_t io() const = 0;
     virtual bool isOutput() const = 0;
     virtual bool isOffload() const = 0;
     virtual bool isOffloadOrDirect() const = 0;
     virtual bool isOffloadOrMmap() const = 0;
     virtual bool isSpatializer() const = 0;
     virtual uint32_t sampleRate() const = 0;
     virtual audio_channel_mask_t inChannelMask(int id) const = 0;
     virtual uint32_t inChannelCount(int id) const = 0;
     virtual audio_channel_mask_t outChannelMask() const = 0;
     virtual uint32_t outChannelCount() const = 0;
     virtual audio_channel_mask_t hapticChannelMask() const = 0;
     virtual size_t frameCount() const = 0;

     // Non trivial methods usually implemented with help from ThreadBase:
     // pay attention to mutex locking order
     virtual uint32_t latency() const { return 0; }
     virtual status_t addEffectToHal(const sp<EffectHalInterface>& effect) = 0;
     virtual status_t removeEffectFromHal(const sp<EffectHalInterface>& effect) = 0;
     virtual void setVolumeForOutput(float left, float right) const = 0;
     virtual bool disconnectEffectHandle(IAfEffectHandle *handle, bool unpinIfLast) = 0;
     virtual void checkSuspendOnEffectEnabled(
             const sp<IAfEffectBase>& effect, bool enabled, bool threadLocked) = 0;
     virtual void onEffectEnable(const sp<IAfEffectBase>& effect) = 0;
     virtual void onEffectDisable(const sp<IAfEffectBase>& effect) = 0;

     // Methods usually implemented with help from AudioFlinger: pay attention to mutex locking order
     virtual status_t createEffectHal(const effect_uuid_t *pEffectUuid,
             int32_t sessionId, int32_t deviceId, sp<EffectHalInterface> *effect) = 0;
     virtual status_t allocateHalBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) = 0;
     virtual bool updateOrphanEffectChains(const sp<IAfEffectBase>& effect) = 0;

     // Methods usually implemented with help from EffectChain: pay attention to mutex locking order
     virtual product_strategy_t strategy() const = 0;
     virtual int32_t activeTrackCnt() const = 0;
     virtual void resetVolume() = 0;
     virtual wp<IAfEffectChain> chain() const = 0;
     virtual bool isAudioPolicyReady() const = 0;
 };

 class IAfEffectBase : public virtual RefBase {
     friend class EffectChain;
     friend class EffectHandle;

 public:
     enum effect_state {
         IDLE,
         RESTART,
         STARTING,
         ACTIVE,
         STOPPING,
         STOPPED,
         DESTROYED
     };
     virtual int id() const = 0;
     virtual effect_state state() const = 0;
     virtual audio_session_t sessionId() const = 0;
     virtual const effect_descriptor_t& desc() const = 0;
     virtual bool isOffloadable() const = 0;
     virtual bool isImplementationSoftware() const = 0;
     virtual bool isProcessImplemented() const = 0;
     virtual bool isVolumeControl() const = 0;
     virtual bool isVolumeMonitor() const = 0;
     virtual bool isEnabled() const = 0;
     virtual bool isPinned() const = 0;
     virtual void unPin() = 0;
     virtual status_t updatePolicyState() = 0;
     virtual bool purgeHandles() = 0;
     virtual void checkSuspendOnEffectEnabled(bool enabled, bool threadLocked) = 0;

     // mCallback is atomic so this can be lock-free.
     virtual void setCallback(const sp<EffectCallbackInterface>& callback) = 0;
     virtual sp<EffectCallbackInterface> getCallback() const = 0;

     virtual status_t addHandle(IAfEffectHandle *handle) = 0;
     virtual ssize_t removeHandle(IAfEffectHandle *handle) = 0;

     virtual sp<IAfEffectModule> asEffectModule() = 0;
     virtual sp<IAfDeviceEffectProxy> asDeviceEffectProxy() = 0;

     virtual void dump(int fd, const Vector<String16>& args) const = 0;

 private:
     virtual status_t setEnabled(bool enabled, bool fromHandle) = 0;
     virtual status_t setEnabled_l(bool enabled) = 0;
     virtual void setSuspended(bool suspended) = 0;
     virtual bool suspended() const = 0;

     virtual status_t command(int32_t cmdCode,
             const std::vector<uint8_t>& cmdData,
             int32_t maxReplySize,
             std::vector<uint8_t>* reply) = 0;

     virtual ssize_t disconnectHandle(IAfEffectHandle *handle, bool unpinIfLast) = 0;
     virtual ssize_t removeHandle_l(IAfEffectHandle *handle) = 0;
     virtual IAfEffectHandle* controlHandle_l() = 0;

     virtual audio_utils::mutex& mutex() const = 0;
 };

 class IAfEffectModule : public virtual IAfEffectBase {
     friend class DeviceEffectProxy;
     friend class EffectChain;

 public:
     static sp<IAfEffectModule> create(
             const sp<EffectCallbackInterface>& callabck,
             effect_descriptor_t *desc,
             int id,
             audio_session_t sessionId,
             bool pinned,
             audio_port_handle_t deviceId);

     virtual int16_t *inBuffer() const = 0;
     virtual status_t setDevices(const AudioDeviceTypeAddrVector &devices) = 0;
     virtual status_t setInputDevice(const AudioDeviceTypeAddr &device) = 0;
     virtual status_t setVolume(uint32_t *left, uint32_t *right, bool controller) = 0;
     virtual status_t setOffloaded(bool offloaded, audio_io_handle_t io) = 0;
     virtual bool isOffloaded() const = 0;

     virtual status_t setAudioSource(audio_source_t source) = 0;
     virtual status_t setMode(audio_mode_t mode) = 0;

     virtual status_t start() = 0;
     virtual status_t getConfigs(audio_config_base_t* inputCfg,
             audio_config_base_t* outputCfg,
             bool* isOutput) const = 0;

     static bool isHapticGenerator(const effect_uuid_t* type);
     virtual bool isHapticGenerator() const = 0;
     virtual status_t setHapticIntensity(int id, os::HapticScale intensity) = 0;
     virtual status_t setVibratorInfo(const media::AudioVibratorInfo& vibratorInfo) = 0;

 private:
     virtual void process() = 0;
     virtual bool updateState() = 0;
     virtual void reset_l() = 0;
     virtual status_t configure() = 0;
     virtual status_t init() = 0;
     virtual uint32_t status() const = 0;
     virtual bool isProcessEnabled() const = 0;
     virtual bool isOffloadedOrDirect() const = 0;
     virtual bool isVolumeControlEnabled() const = 0;

     virtual void setInBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
     virtual void setOutBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
     virtual int16_t *outBuffer() const = 0;

     // Updates the access mode if it is out of date.  May issue a new effect configure.
     virtual void updateAccessMode() = 0;

     virtual status_t stop() = 0;
     virtual void addEffectToHal_l() = 0;
     virtual void release_l() = 0;
 };

 class IAfEffectChain : public RefBase {
     // Most of these methods are accessed from AudioFlinger::Thread
 public:
     static sp<IAfEffectChain> create(
             const sp<IAfThreadBase>& thread,
             audio_session_t sessionId);

     // special key used for an entry in mSuspendedEffects keyed vector
     // corresponding to a suspend all request.
     static constexpr int kKeyForSuspendAll = 0;

     // minimum duration during which we force calling effect process when last track on
     // a session is stopped or removed to allow effect tail to be rendered
     static constexpr int kProcessTailDurationMs = 1000;

     virtual void process_l() = 0;

     virtual audio_utils::mutex& mutex() const = 0;

     virtual status_t createEffect_l(sp<IAfEffectModule>& effect,
                             effect_descriptor_t *desc,
                             int id,
                             audio_session_t sessionId,
                             bool pinned) = 0;

     virtual status_t addEffect_l(const sp<IAfEffectModule>& handle) = 0;
     virtual status_t addEffect_ll(const sp<IAfEffectModule>& handle) = 0;
     virtual size_t removeEffect_l(const sp<IAfEffectModule>& handle, bool release = false) = 0;

     virtual audio_session_t sessionId() const = 0;
     virtual void setSessionId(audio_session_t sessionId) = 0;

     virtual sp<IAfEffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor) const = 0;
     virtual sp<IAfEffectModule> getEffectFromId_l(int id) const = 0;
     virtual sp<IAfEffectModule> getEffectFromType_l(const effect_uuid_t *type) const = 0;
     virtual std::vector<int> getEffectIds() const = 0;
     virtual bool setVolume_l(uint32_t *left, uint32_t *right, bool force = false) = 0;
     virtual void resetVolume_l() = 0;
     virtual void setDevices_l(const AudioDeviceTypeAddrVector &devices) = 0;
     virtual void setInputDevice_l(const AudioDeviceTypeAddr &device) = 0;
     virtual void setMode_l(audio_mode_t mode) = 0;
     virtual void setAudioSource_l(audio_source_t source) = 0;

     virtual void setInBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
     virtual float *inBuffer() const = 0;
     virtual void setOutBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
     virtual float *outBuffer() const = 0;

     virtual void incTrackCnt() = 0;
     virtual void decTrackCnt() = 0;
     virtual int32_t trackCnt() const = 0;

     virtual void incActiveTrackCnt() = 0;
     virtual void decActiveTrackCnt() = 0;
     virtual int32_t activeTrackCnt() const = 0;

     virtual product_strategy_t strategy() const = 0;
     virtual void setStrategy(product_strategy_t strategy) = 0;

     // suspend or restore effects of the specified type. The number of suspend requests is counted
     // and restore occurs once all suspend requests are cancelled.
     virtual void setEffectSuspended_l(
             const effect_uuid_t *type, bool suspend) = 0;
     // suspend all eligible effects
     virtual void setEffectSuspendedAll_l(bool suspend) = 0;
     // check if effects should be suspended or restored when a given effect is enable or disabled
     virtual void checkSuspendOnEffectEnabled(const sp<IAfEffectModule>& effect, bool enabled) = 0;

     virtual void clearInputBuffer() = 0;

     // At least one non offloadable effect in the chain is enabled
     virtual bool isNonOffloadableEnabled() const = 0;
     virtual bool isNonOffloadableEnabled_l() const = 0;

     virtual void syncHalEffectsState() = 0;

     // flags is an ORed set of audio_output_flags_t which is updated on return.
     virtual void checkOutputFlagCompatibility(audio_output_flags_t *flags) const = 0;

     // flags is an ORed set of audio_input_flags_t which is updated on return.
     virtual void checkInputFlagCompatibility(audio_input_flags_t *flags) const = 0;

     // Is this EffectChain compatible with the RAW audio flag.
     virtual bool isRawCompatible() const = 0;

     // Is this EffectChain compatible with the FAST audio flag.
     virtual bool isFastCompatible() const = 0;

     // Is this EffectChain compatible with the bit-perfect audio flag.
     virtual bool isBitPerfectCompatible() const = 0;

     // isCompatibleWithThread_l() must be called with thread->mLock held
     virtual bool isCompatibleWithThread_l(const sp<IAfThreadBase>& thread) const = 0;

     virtual bool containsHapticGeneratingEffect_l() = 0;

     virtual void setHapticIntensity_l(int id, os::HapticScale intensity) = 0;

     virtual sp<EffectCallbackInterface> effectCallback() const = 0;

     virtual wp<IAfThreadBase> thread() const = 0;
     virtual void setThread(const sp<IAfThreadBase>& thread) = 0;

     virtual bool isFirstEffect(int id) const = 0;

     virtual size_t numberOfEffects() const = 0;
     virtual sp<IAfEffectModule> getEffectModule(size_t index) const = 0;

     virtual void dump(int fd, const Vector<String16>& args) const = 0;
 };

 class IAfEffectHandle : public virtual RefBase {
     friend class EffectBase;
     friend class EffectChain;
     friend class EffectModule;

 public:
     static sp<IAfEffectHandle> create(
             const sp<IAfEffectBase>& effect,
             const sp<Client>& client,
             const sp<media::IEffectClient>& effectClient,
             int32_t priority, bool notifyFramesProcessed);

     virtual status_t initCheck() const = 0;
     virtual bool enabled() const = 0;
     virtual int id() const = 0;
     virtual wp<IAfEffectBase> effect() const = 0;
     virtual sp<android::media::IEffect> asIEffect() = 0;
     virtual const sp<Client>& client() const = 0;

 private:
     virtual void setControl(bool hasControl, bool signal, bool enabled) = 0;
     virtual bool hasControl() const = 0;
     virtual void setEnabled(bool enabled) = 0;
     virtual bool disconnected() const = 0;
     virtual int priority() const = 0;

     virtual void commandExecuted(uint32_t cmdCode,
             const std::vector<uint8_t>& cmdData,
             const std::vector<uint8_t>& replyData) = 0;
     virtual void framesProcessed(int32_t frames) const = 0;

     virtual void dumpToBuffer(char* buffer, size_t size) const = 0;
 };

 class IAfDeviceEffectProxy : public virtual IAfEffectBase {
 public:
     static sp<IAfDeviceEffectProxy> create(const AudioDeviceTypeAddr& device,
                 const sp<DeviceEffectManagerCallback>& callback,
                 effect_descriptor_t *desc, int id, bool notifyFramesProcessed);

     virtual status_t init(
             const std::map<audio_patch_handle_t,
             IAfPatchPanel::Patch>& patches) = 0;
     virtual const AudioDeviceTypeAddr& device() const = 0;

     virtual status_t onCreatePatch(
             audio_patch_handle_t patchHandle,
             const IAfPatchPanel::Patch& patch) = 0;
     virtual void onReleasePatch(audio_patch_handle_t patchHandle) = 0;

     virtual void dump2(int fd, int spaces) const = 0; // TODO(b/291319101) naming?

 private:
     // used by DeviceEffectProxy
     virtual bool isOutput() const = 0;
     virtual uint32_t sampleRate() const = 0;
     virtual audio_channel_mask_t channelMask() const = 0;
     virtual uint32_t channelCount() const = 0;

     virtual size_t removeEffect(const sp<IAfEffectModule>& effect) = 0;
     virtual status_t addEffectToHal(const sp<EffectHalInterface>& effect) = 0;
     virtual status_t removeEffectFromHal(const sp<EffectHalInterface>& effect) = 0;
 };

 }  // namespace android
	/*
	* Copyright (C) 2023 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.
	*/

	#pragma once

	#include "IAfPatchPanel.h" // full class Patch definition needed

	#include <android/media/AudioVibratorInfo.h>
	#include <android/media/BnEffect.h>
	#include <android/media/BnEffectClient.h>
	#include <audio_utils/mutex.h>
	#include <media/AudioCommonTypes.h> // product_strategy_t
	#include <media/AudioDeviceTypeAddr.h>
	#include <media/audiohal/EffectHalInterface.h>
	#include <utils/RefBase.h>
	#include <vibrator/ExternalVibration.h>

	namespace android {

	class Client;
	class DeviceEffectManagerCallback;

	class IAfDeviceEffectProxy;
	class IAfEffectBase;
	class IAfEffectChain;
	class IAfEffectHandle;
	class IAfEffectModule;
	class IAfThreadBase;

	// Interface implemented by the EffectModule parent or owner (e.g an EffectChain) to abstract
	// interactions between the EffectModule and the reset of the audio framework.
	class EffectCallbackInterface : public RefBase {
	public:
	// Trivial methods usually implemented with help from ThreadBase
	virtual audio_io_handle_t io() const = 0;
	virtual bool isOutput() const = 0;
	virtual bool isOffload() const = 0;
	virtual bool isOffloadOrDirect() const = 0;
	virtual bool isOffloadOrMmap() const = 0;
	virtual bool isSpatializer() const = 0;
	virtual uint32_t sampleRate() const = 0;
	virtual audio_channel_mask_t inChannelMask(int id) const = 0;
	virtual uint32_t inChannelCount(int id) const = 0;
	virtual audio_channel_mask_t outChannelMask() const = 0;
	virtual uint32_t outChannelCount() const = 0;
	virtual audio_channel_mask_t hapticChannelMask() const = 0;
	virtual size_t frameCount() const = 0;

	// Non trivial methods usually implemented with help from ThreadBase:
	// pay attention to mutex locking order
	virtual uint32_t latency() const { return 0; }
	virtual status_t addEffectToHal(const sp<EffectHalInterface>& effect) = 0;
	virtual status_t removeEffectFromHal(const sp<EffectHalInterface>& effect) = 0;
	virtual void setVolumeForOutput(float left, float right) const = 0;
	virtual bool disconnectEffectHandle(IAfEffectHandle *handle, bool unpinIfLast) = 0;
	virtual void checkSuspendOnEffectEnabled(
	const sp<IAfEffectBase>& effect, bool enabled, bool threadLocked) = 0;
	virtual void onEffectEnable(const sp<IAfEffectBase>& effect) = 0;
	virtual void onEffectDisable(const sp<IAfEffectBase>& effect) = 0;

	// Methods usually implemented with help from AudioFlinger: pay attention to mutex locking order
	virtual status_t createEffectHal(const effect_uuid_t *pEffectUuid,
	int32_t sessionId, int32_t deviceId, sp<EffectHalInterface> *effect) = 0;
	virtual status_t allocateHalBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) = 0;
	virtual bool updateOrphanEffectChains(const sp<IAfEffectBase>& effect) = 0;

	// Methods usually implemented with help from EffectChain: pay attention to mutex locking order
	virtual product_strategy_t strategy() const = 0;
	virtual int32_t activeTrackCnt() const = 0;
	virtual void resetVolume() = 0;
	virtual wp<IAfEffectChain> chain() const = 0;
	virtual bool isAudioPolicyReady() const = 0;
	};

	class IAfEffectBase : public virtual RefBase {
	friend class EffectChain;
	friend class EffectHandle;

	public:
	enum effect_state {
	IDLE,
	RESTART,
	STARTING,
	ACTIVE,
	STOPPING,
	STOPPED,
	DESTROYED
	};
	virtual int id() const = 0;
	virtual effect_state state() const = 0;
	virtual audio_session_t sessionId() const = 0;
	virtual const effect_descriptor_t& desc() const = 0;
	virtual bool isOffloadable() const = 0;
	virtual bool isImplementationSoftware() const = 0;
	virtual bool isProcessImplemented() const = 0;
	virtual bool isVolumeControl() const = 0;
	virtual bool isVolumeMonitor() const = 0;
	virtual bool isEnabled() const = 0;
	virtual bool isPinned() const = 0;
	virtual void unPin() = 0;
	virtual status_t updatePolicyState() = 0;
	virtual bool purgeHandles() = 0;
	virtual void checkSuspendOnEffectEnabled(bool enabled, bool threadLocked) = 0;

	// mCallback is atomic so this can be lock-free.
	virtual void setCallback(const sp<EffectCallbackInterface>& callback) = 0;
	virtual sp<EffectCallbackInterface> getCallback() const = 0;

	virtual status_t addHandle(IAfEffectHandle *handle) = 0;
	virtual ssize_t removeHandle(IAfEffectHandle *handle) = 0;

	virtual sp<IAfEffectModule> asEffectModule() = 0;
	virtual sp<IAfDeviceEffectProxy> asDeviceEffectProxy() = 0;

	virtual void dump(int fd, const Vector<String16>& args) const = 0;

	private:
	virtual status_t setEnabled(bool enabled, bool fromHandle) = 0;
	virtual status_t setEnabled_l(bool enabled) = 0;
	virtual void setSuspended(bool suspended) = 0;
	virtual bool suspended() const = 0;

	virtual status_t command(int32_t cmdCode,
	const std::vector<uint8_t>& cmdData,
	int32_t maxReplySize,
	std::vector<uint8_t>* reply) = 0;

	virtual ssize_t disconnectHandle(IAfEffectHandle *handle, bool unpinIfLast) = 0;
	virtual ssize_t removeHandle_l(IAfEffectHandle *handle) = 0;
	virtual IAfEffectHandle* controlHandle_l() = 0;

	virtual audio_utils::mutex& mutex() const = 0;
	};

	class IAfEffectModule : public virtual IAfEffectBase {
	friend class DeviceEffectProxy;
	friend class EffectChain;

	public:
	static sp<IAfEffectModule> create(
	const sp<EffectCallbackInterface>& callabck,
	effect_descriptor_t *desc,
	int id,
	audio_session_t sessionId,
	bool pinned,
	audio_port_handle_t deviceId);

	virtual int16_t *inBuffer() const = 0;
	virtual status_t setDevices(const AudioDeviceTypeAddrVector &devices) = 0;
	virtual status_t setInputDevice(const AudioDeviceTypeAddr &device) = 0;
	virtual status_t setVolume(uint32_t left, uint32_t right, bool controller) = 0;
	virtual status_t setOffloaded(bool offloaded, audio_io_handle_t io) = 0;
	virtual bool isOffloaded() const = 0;

	virtual status_t setAudioSource(audio_source_t source) = 0;
	virtual status_t setMode(audio_mode_t mode) = 0;

	virtual status_t start() = 0;
	virtual status_t getConfigs(audio_config_base_t* inputCfg,
	audio_config_base_t* outputCfg,
	bool* isOutput) const = 0;

	static bool isHapticGenerator(const effect_uuid_t* type);
	virtual bool isHapticGenerator() const = 0;
	virtual status_t setHapticIntensity(int id, os::HapticScale intensity) = 0;
	virtual status_t setVibratorInfo(const media::AudioVibratorInfo& vibratorInfo) = 0;

	private:
	virtual void process() = 0;
	virtual bool updateState() = 0;
	virtual void reset_l() = 0;
	virtual status_t configure() = 0;
	virtual status_t init() = 0;
	virtual uint32_t status() const = 0;
	virtual bool isProcessEnabled() const = 0;
	virtual bool isOffloadedOrDirect() const = 0;
	virtual bool isVolumeControlEnabled() const = 0;

	virtual void setInBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
	virtual void setOutBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
	virtual int16_t *outBuffer() const = 0;

	// Updates the access mode if it is out of date. May issue a new effect configure.
	virtual void updateAccessMode() = 0;

	virtual status_t stop() = 0;
	virtual void addEffectToHal_l() = 0;
	virtual void release_l() = 0;
	};

	class IAfEffectChain : public RefBase {
	// Most of these methods are accessed from AudioFlinger::Thread
	public:
	static sp<IAfEffectChain> create(
	const sp<IAfThreadBase>& thread,
	audio_session_t sessionId);

	// special key used for an entry in mSuspendedEffects keyed vector
	// corresponding to a suspend all request.
	static constexpr int kKeyForSuspendAll = 0;

	// minimum duration during which we force calling effect process when last track on
	// a session is stopped or removed to allow effect tail to be rendered
	static constexpr int kProcessTailDurationMs = 1000;

	virtual void process_l() = 0;

	virtual audio_utils::mutex& mutex() const = 0;

	virtual status_t createEffect_l(sp<IAfEffectModule>& effect,
	effect_descriptor_t *desc,
	int id,
	audio_session_t sessionId,
	bool pinned) = 0;

	virtual status_t addEffect_l(const sp<IAfEffectModule>& handle) = 0;
	virtual status_t addEffect_ll(const sp<IAfEffectModule>& handle) = 0;
	virtual size_t removeEffect_l(const sp<IAfEffectModule>& handle, bool release = false) = 0;

	virtual audio_session_t sessionId() const = 0;
	virtual void setSessionId(audio_session_t sessionId) = 0;

	virtual sp<IAfEffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor) const = 0;
	virtual sp<IAfEffectModule> getEffectFromId_l(int id) const = 0;
	virtual sp<IAfEffectModule> getEffectFromType_l(const effect_uuid_t *type) const = 0;
	virtual std::vector<int> getEffectIds() const = 0;
	virtual bool setVolume_l(uint32_t left, uint32_t right, bool force = false) = 0;
	virtual void resetVolume_l() = 0;
	virtual void setDevices_l(const AudioDeviceTypeAddrVector &devices) = 0;
	virtual void setInputDevice_l(const AudioDeviceTypeAddr &device) = 0;
	virtual void setMode_l(audio_mode_t mode) = 0;
	virtual void setAudioSource_l(audio_source_t source) = 0;

	virtual void setInBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
	virtual float *inBuffer() const = 0;
	virtual void setOutBuffer(const sp<EffectBufferHalInterface>& buffer) = 0;
	virtual float *outBuffer() const = 0;

	virtual void incTrackCnt() = 0;
	virtual void decTrackCnt() = 0;
	virtual int32_t trackCnt() const = 0;

	virtual void incActiveTrackCnt() = 0;
	virtual void decActiveTrackCnt() = 0;
	virtual int32_t activeTrackCnt() const = 0;

	virtual product_strategy_t strategy() const = 0;
	virtual void setStrategy(product_strategy_t strategy) = 0;

	// suspend or restore effects of the specified type. The number of suspend requests is counted
	// and restore occurs once all suspend requests are cancelled.
	virtual void setEffectSuspended_l(
	const effect_uuid_t *type, bool suspend) = 0;
	// suspend all eligible effects
	virtual void setEffectSuspendedAll_l(bool suspend) = 0;
	// check if effects should be suspended or restored when a given effect is enable or disabled
	virtual void checkSuspendOnEffectEnabled(const sp<IAfEffectModule>& effect, bool enabled) = 0;

	virtual void clearInputBuffer() = 0;

	// At least one non offloadable effect in the chain is enabled
	virtual bool isNonOffloadableEnabled() const = 0;
	virtual bool isNonOffloadableEnabled_l() const = 0;

	virtual void syncHalEffectsState() = 0;

	// flags is an ORed set of audio_output_flags_t which is updated on return.
	virtual void checkOutputFlagCompatibility(audio_output_flags_t *flags) const = 0;

	// flags is an ORed set of audio_input_flags_t which is updated on return.
	virtual void checkInputFlagCompatibility(audio_input_flags_t *flags) const = 0;

	// Is this EffectChain compatible with the RAW audio flag.
	virtual bool isRawCompatible() const = 0;

	// Is this EffectChain compatible with the FAST audio flag.
	virtual bool isFastCompatible() const = 0;

	// Is this EffectChain compatible with the bit-perfect audio flag.
	virtual bool isBitPerfectCompatible() const = 0;

	// isCompatibleWithThread_l() must be called with thread->mLock held
	virtual bool isCompatibleWithThread_l(const sp<IAfThreadBase>& thread) const = 0;

	virtual bool containsHapticGeneratingEffect_l() = 0;

	virtual void setHapticIntensity_l(int id, os::HapticScale intensity) = 0;

	virtual sp<EffectCallbackInterface> effectCallback() const = 0;

	virtual wp<IAfThreadBase> thread() const = 0;
	virtual void setThread(const sp<IAfThreadBase>& thread) = 0;

	virtual bool isFirstEffect(int id) const = 0;

	virtual size_t numberOfEffects() const = 0;
	virtual sp<IAfEffectModule> getEffectModule(size_t index) const = 0;

	virtual void dump(int fd, const Vector<String16>& args) const = 0;
	};

	class IAfEffectHandle : public virtual RefBase {
	friend class EffectBase;
	friend class EffectChain;
	friend class EffectModule;

	public:
	static sp<IAfEffectHandle> create(
	const sp<IAfEffectBase>& effect,
	const sp<Client>& client,
	const sp<media::IEffectClient>& effectClient,
	int32_t priority, bool notifyFramesProcessed);

	virtual status_t initCheck() const = 0;
	virtual bool enabled() const = 0;
	virtual int id() const = 0;
	virtual wp<IAfEffectBase> effect() const = 0;
	virtual sp<android::media::IEffect> asIEffect() = 0;
	virtual const sp<Client>& client() const = 0;

	private:
	virtual void setControl(bool hasControl, bool signal, bool enabled) = 0;
	virtual bool hasControl() const = 0;
	virtual void setEnabled(bool enabled) = 0;
	virtual bool disconnected() const = 0;
	virtual int priority() const = 0;

	virtual void commandExecuted(uint32_t cmdCode,
	const std::vector<uint8_t>& cmdData,
	const std::vector<uint8_t>& replyData) = 0;
	virtual void framesProcessed(int32_t frames) const = 0;

	virtual void dumpToBuffer(char* buffer, size_t size) const = 0;
	};

	class IAfDeviceEffectProxy : public virtual IAfEffectBase {
	public:
	static sp<IAfDeviceEffectProxy> create(const AudioDeviceTypeAddr& device,
	const sp<DeviceEffectManagerCallback>& callback,
	effect_descriptor_t *desc, int id, bool notifyFramesProcessed);

	virtual status_t init(
	const std::map<audio_patch_handle_t,
	IAfPatchPanel::Patch>& patches) = 0;
	virtual const AudioDeviceTypeAddr& device() const = 0;

	virtual status_t onCreatePatch(
	audio_patch_handle_t patchHandle,
	const IAfPatchPanel::Patch& patch) = 0;
	virtual void onReleasePatch(audio_patch_handle_t patchHandle) = 0;

	virtual void dump2(int fd, int spaces) const = 0; // TODO(b/291319101) naming?

	private:
	// used by DeviceEffectProxy
	virtual bool isOutput() const = 0;
	virtual uint32_t sampleRate() const = 0;
	virtual audio_channel_mask_t channelMask() const = 0;
	virtual uint32_t channelCount() const = 0;

	virtual size_t removeEffect(const sp<IAfEffectModule>& effect) = 0;
	virtual status_t addEffectToHal(const sp<EffectHalInterface>& effect) = 0;
	virtual status_t removeEffectFromHal(const sp<EffectHalInterface>& effect) = 0;
	};

	} // namespace android