Downmix : Add libeffect implementation (aa095257) · Commits · e / os / android_frameworks_av

media/libeffects/downmix/Android.bp

+26 −0

Original line number	Diff line number	Diff line
		@@ -47,3 +47,29 @@ cc_library {
		"libhardware_headers",
		],
		}

		cc_library_shared {
		name: "libdownmixaidl",
		srcs: [
		"aidl/EffectDownmix.cpp",
		"aidl/DownmixContext.cpp",
		":effectCommonFile",
		],
		defaults: [
		"aidlaudioservice_defaults",
		"latest_android_hardware_audio_effect_ndk_shared",
		"latest_android_media_audio_common_types_ndk_shared",
		],
		header_libs: [
		"libaudioeffects",
		"libhardware_headers"
		],
		shared_libs: [
		"libaudioutils",
		"libcutils",
		"liblog",
		],
		visibility: [
		"//hardware/interfaces/audio/aidl/default",
		],
		}

media/libeffects/downmix/aidl/DownmixContext.cpp

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 "AHAL_DownmixContext"

		#include <android-base/logging.h>

		#include "DownmixContext.h"

		using aidl::android::hardware::audio::effect::IEffect;
		using ::android::hardware::audio::common::getChannelCount;

		namespace aidl::android::hardware::audio::effect {

		DownmixContext::DownmixContext(int statusDepth, const Parameter::Common& common)
		: EffectContext(statusDepth, common) {
		LOG(DEBUG) << __func__;
		mState = DOWNMIX_STATE_UNINITIALIZED;
		init_params(common);
		}

		DownmixContext::~DownmixContext() {
		LOG(DEBUG) << __func__;
		mState = DOWNMIX_STATE_UNINITIALIZED;
		}

		RetCode DownmixContext::enable() {
		LOG(DEBUG) << __func__;
		if (mState != DOWNMIX_STATE_INITIALIZED) {
		return RetCode::ERROR_EFFECT_LIB_ERROR;
		}
		mState = DOWNMIX_STATE_ACTIVE;
		return RetCode::SUCCESS;
		}

		RetCode DownmixContext::disable() {
		LOG(DEBUG) << __func__;
		if (mState != DOWNMIX_STATE_ACTIVE) {
		return RetCode::ERROR_EFFECT_LIB_ERROR;
		}
		mState = DOWNMIX_STATE_INITIALIZED;
		return RetCode::SUCCESS;
		}

		void DownmixContext::reset() {
		LOG(DEBUG) << __func__;
		disable();
		resetBuffer();
		}

		IEffect::Status DownmixContext::lvmProcess(float* in, float* out, int samples) {
		LOG(DEBUG) << __func__ << " in " << in << " out " << out << " sample " << samples;
		IEffect::Status status = {EX_ILLEGAL_ARGUMENT, 0, 0};

		if (in == nullptr \|\| out == nullptr \|\| getInputFrameSize() != getOutputFrameSize() \|\|
		getInputFrameSize() == 0) {
		return status;
		}

		status = {EX_ILLEGAL_STATE, 0, 0};
		if (mState == DOWNMIX_STATE_UNINITIALIZED) {
		LOG(ERROR) << __func__ << "Trying to use an uninitialized downmixer";
		return status;
		} else if (mState == DOWNMIX_STATE_INITIALIZED) {
		LOG(ERROR) << __func__ << "Trying to use a non-configured downmixer";
		return status;
		}

		LOG(DEBUG) << __func__ << " start processing";
		bool accumulate = false;
		int frames = samples * sizeof(float) / getInputFrameSize();
		if (mType == Downmix::Type::STRIP) {
		int inputChannelCount = getChannelCount(mChMask);
		while (frames) {
		if (accumulate) {
		out[0] = std::clamp(out[0] + in[0], -1.f, 1.f);
		out[1] = std::clamp(out[1] + in[1], -1.f, 1.f);
		} else {
		out[0] = in[0];
		out[1] = in[1];
		}
		in += inputChannelCount;
		out += 2;
		frames--;
		}
		} else {
		int chMask = mChMask.get<AudioChannelLayout::layoutMask>();
		if (!mChannelMix.process(in, out, frames, accumulate, (audio_channel_mask_t)chMask)) {
		LOG(ERROR) << "Multichannel configuration " << mChMask.toString()
		<< " is not supported";
		return status;
		}
		}
		LOG(DEBUG) << __func__ << " done processing";
		return {STATUS_OK, samples, samples};
		}

		void DownmixContext::init_params(const Parameter::Common& common) {
		// when configuring the effect, do not allow a blank or unsupported channel mask
		AudioChannelLayout channelMask = common.input.base.channelMask;
		if (isChannelMaskValid(channelMask)) {
		LOG(ERROR) << "Downmix_Configure error: input channel mask " << channelMask.toString()
		<< " not supported";
		} else {
		mType = Downmix::Type::FOLD;
		mChMask = channelMask;
		mState = DOWNMIX_STATE_INITIALIZED;
		}
		}

		bool DownmixContext::isChannelMaskValid(AudioChannelLayout channelMask) {
		if (channelMask.getTag() == AudioChannelLayout::layoutMask) return false;
		int chMask = channelMask.get<AudioChannelLayout::layoutMask>();
		// check against unsupported channels (up to FCC_26)
		constexpr uint32_t MAXIMUM_CHANNEL_MASK = AudioChannelLayout::LAYOUT_22POINT2 \|
		AudioChannelLayout::CHANNEL_FRONT_WIDE_LEFT \|
		AudioChannelLayout::CHANNEL_FRONT_WIDE_RIGHT;
		if (chMask & ~MAXIMUM_CHANNEL_MASK) {
		LOG(ERROR) << "Unsupported channels in " << (chMask & ~MAXIMUM_CHANNEL_MASK);
		return false;
		}
		return true;
		}

		} // namespace aidl::android::hardware::audio::effect

media/libeffects/downmix/aidl/DownmixContext.h

0 → 100644

+78 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 "effect-impl/EffectContext.h"

		#include <audio_utils/ChannelMix.h>

		namespace aidl::android::hardware::audio::effect {

		using media::audio::common::AudioChannelLayout;
		using media::audio::common::AudioDeviceDescription;

		enum DownmixState {
		DOWNMIX_STATE_UNINITIALIZED,
		DOWNMIX_STATE_INITIALIZED,
		DOWNMIX_STATE_ACTIVE,
		};

		class DownmixContext final : public EffectContext {
		public:
		DownmixContext(int statusDepth, const Parameter::Common& common);
		~DownmixContext();
		RetCode enable();
		RetCode disable();
		void reset();

		RetCode setDmType(Downmix::Type type) {
		mType = type;
		return RetCode::SUCCESS;
		}
		Downmix::Type getDmType() const { return mType; }

		RetCode setVolumeStereo(const Parameter::VolumeStereo& volumeStereo) override {
		// FIXME change volume
		mVolumeStereo = volumeStereo;
		return RetCode::SUCCESS;
		}
		Parameter::VolumeStereo getVolumeStereo() override { return mVolumeStereo; }

		RetCode setOutputDevice(const AudioDeviceDescription& device) override {
		// FIXME change type if playing on headset vs speaker
		mOutputDevice = device;
		return RetCode::SUCCESS;
		}
		AudioDeviceDescription getOutputDevice() { return mOutputDevice; }

		IEffect::Status lvmProcess(float* in, float* out, int samples);

		private:
		DownmixState mState;
		Downmix::Type mType;
		AudioChannelLayout mChMask;
		::android::audio_utils::channels::ChannelMix mChannelMix;

		// Common Params
		AudioDeviceDescription mOutputDevice;
		Parameter::VolumeStereo mVolumeStereo;

		void init_params(const Parameter::Common& common);
		bool isChannelMaskValid(AudioChannelLayout channelMask);
		};

		} // namespace aidl::android::hardware::audio::effect

media/libeffects/downmix/aidl/EffectDownmix.cpp

0 → 100644

+214 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 "AHAL_DownmixImpl"

		#include <android-base/logging.h>

		#include "EffectDownmix.h"

		using aidl::android::hardware::audio::effect::Descriptor;
		using aidl::android::hardware::audio::effect::DownmixImpl;
		using aidl::android::hardware::audio::effect::IEffect;
		using aidl::android::hardware::audio::effect::kDownmixImplUUID;
		using aidl::android::hardware::audio::effect::kDownmixTypeUUID;
		using aidl::android::media::audio::common::AudioUuid;

		extern "C" binder_exception_t createEffect(const AudioUuid* in_impl_uuid,
		std::shared_ptr<IEffect>* instanceSpp) {
		if (!in_impl_uuid \|\| *in_impl_uuid != kDownmixImplUUID) {
		LOG(ERROR) << __func__ << "uuid not supported";
		return EX_ILLEGAL_ARGUMENT;
		}
		if (instanceSpp) {
		*instanceSpp = ndk::SharedRefBase::make<DownmixImpl>();
		LOG(DEBUG) << __func__ << " instance " << instanceSpp->get() << " created";
		return EX_NONE;
		} else {
		LOG(ERROR) << __func__ << " invalid input parameter!";
		return EX_ILLEGAL_ARGUMENT;
		}
		}

		extern "C" binder_exception_t queryEffect(const AudioUuid* in_impl_uuid, Descriptor* _aidl_return) {
		if (!in_impl_uuid \|\| *in_impl_uuid != kDownmixImplUUID) {
		LOG(ERROR) << __func__ << "uuid not supported";
		return EX_ILLEGAL_ARGUMENT;
		}
		*_aidl_return = DownmixImpl::kDescriptor;
		return EX_NONE;
		}

		namespace aidl::android::hardware::audio::effect {

		const std::string DownmixImpl::kEffectName = "Multichannel Downmix To Stereo";
		const Descriptor DownmixImpl::kDescriptor = {
		.common = {
		.id = {.type = kDownmixTypeUUID, .uuid = kDownmixImplUUID, .proxy = std::nullopt},
		.flags = {.type = Flags::Type::INSERT, .insert = Flags::Insert::FIRST},
		.name = DownmixImpl::kEffectName,
		.implementor = "The Android Open Source Project"}};

		ndk::ScopedAStatus DownmixImpl::getDescriptor(Descriptor* _aidl_return) {
		RETURN_IF(!_aidl_return, EX_ILLEGAL_ARGUMENT, "Parameter:nullptr");
		LOG(DEBUG) << __func__ << kDescriptor.toString();
		*_aidl_return = kDescriptor;
		return ndk::ScopedAStatus::ok();
		}

		ndk::ScopedAStatus DownmixImpl::setParameterCommon(const Parameter& param) {
		RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");

		auto tag = param.getTag();
		switch (tag) {
		case Parameter::common:
		RETURN_IF(mContext->setCommon(param.get<Parameter::common>()) != RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setCommFailed");
		break;
		case Parameter::deviceDescription:
		RETURN_IF(mContext->setOutputDevice(param.get<Parameter::deviceDescription>()) !=
		RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setDeviceFailed");
		break;
		case Parameter::mode:
		RETURN_IF(mContext->setAudioMode(param.get<Parameter::mode>()) != RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setModeFailed");
		break;
		case Parameter::source:
		RETURN_IF(mContext->setAudioSource(param.get<Parameter::source>()) != RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setSourceFailed");
		break;
		case Parameter::volumeStereo:
		RETURN_IF(mContext->setVolumeStereo(param.get<Parameter::volumeStereo>()) !=
		RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setVolumeStereoFailed");
		break;
		default: {
		LOG(ERROR) << __func__ << " unsupportedParameterTag " << toString(tag);
		return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
		"commonParamNotSupported");
		}
		}
		return ndk::ScopedAStatus::ok();
		}

		ndk::ScopedAStatus DownmixImpl::commandImpl(CommandId command) {
		RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");
		switch (command) {
		case CommandId::START:
		mContext->enable();
		break;
		case CommandId::STOP:
		mContext->disable();
		break;
		case CommandId::RESET:
		mContext->reset();
		break;
		default:
		LOG(ERROR) << __func__ << " commandId " << toString(command) << " not supported";
		return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
		"commandIdNotSupported");
		}
		return ndk::ScopedAStatus::ok();
		}

		ndk::ScopedAStatus DownmixImpl::setParameterSpecific(const Parameter::Specific& specific) {
		RETURN_IF(Parameter::Specific::downmix != specific.getTag(), EX_ILLEGAL_ARGUMENT,
		"EffectNotSupported");
		RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");

		auto& dmParam = specific.get<Parameter::Specific::downmix>();
		auto tag = dmParam.getTag();

		switch (tag) {
		case Downmix::type: {
		RETURN_IF(mContext->setDmType(dmParam.get<Downmix::type>()) != RetCode::SUCCESS,
		EX_ILLEGAL_ARGUMENT, "setTypeFailed");
		return ndk::ScopedAStatus::ok();
		}
		default: {
		LOG(ERROR) << __func__ << " unsupported tag: " << toString(tag);
		return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
		"DownmixTagNotSupported");
		}
		}
		}

		ndk::ScopedAStatus DownmixImpl::getParameterSpecific(const Parameter::Id& id,
		Parameter::Specific* specific) {
		RETURN_IF(!specific, EX_NULL_POINTER, "nullPtr");
		auto tag = id.getTag();
		RETURN_IF(Parameter::Id::downmixTag != tag, EX_ILLEGAL_ARGUMENT, "wrongIdTag");
		auto dmId = id.get<Parameter::Id::downmixTag>();
		auto dmIdTag = dmId.getTag();
		switch (dmIdTag) {
		case Downmix::Id::commonTag:
		return getParameterDownmix(dmId.get<Downmix::Id::commonTag>(), specific);
		default:
		LOG(ERROR) << __func__ << " unsupported tag: " << toString(dmIdTag);
		return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
		"DownmixTagNotSupported");
		}
		}

		ndk::ScopedAStatus DownmixImpl::getParameterDownmix(const Downmix::Tag& tag,
		Parameter::Specific* specific) {
		RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");

		Downmix dmParam;
		switch (tag) {
		case Downmix::type: {
		dmParam.set<Downmix::type>(mContext->getDmType());
		break;
		}
		default: {
		LOG(ERROR) << __func__ << " unsupported tag: " << toString(tag);
		return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
		"DownmixTagNotSupported");
		}
		}

		specific->set<Parameter::Specific::downmix>(dmParam);
		return ndk::ScopedAStatus::ok();
		}

		std::shared_ptr<EffectContext> DownmixImpl::createContext(const Parameter::Common& common) {
		if (mContext) {
		LOG(DEBUG) << __func__ << " context already exist";
		return mContext;
		}

		mContext = std::make_shared<DownmixContext>(1 /* statusFmqDepth */, common);
		return mContext;
		}

		RetCode DownmixImpl::releaseContext() {
		if (mContext) {
		mContext.reset();
		}
		return RetCode::SUCCESS;
		}

		// Processing method running in EffectWorker thread.
		IEffect::Status DownmixImpl::effectProcessImpl(float* in, float* out, int sampleToProcess) {
		if (!mContext) {
		LOG(ERROR) << __func__ << " nullContext";
		return {EX_NULL_POINTER, 0, 0};
		}
		return mContext->lvmProcess(in, out, sampleToProcess);
		}

		} // namespace aidl::android::hardware::audio::effect

media/libeffects/downmix/aidl/EffectDownmix.h

0 → 100644

+55 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 <aidl/android/hardware/audio/effect/BnEffect.h>
		#include <audio_effects/effect_downmix.h>

		#include "DownmixContext.h"
		#include "effect-impl/EffectImpl.h"
		#include "effect-impl/EffectUUID.h"

		namespace aidl::android::hardware::audio::effect {

		class DownmixImpl final : public EffectImpl {
		public:
		static const std::string kEffectName;
		static const Descriptor kDescriptor;
		DownmixImpl() { LOG(DEBUG) << __func__; }
		~DownmixImpl() {
		cleanUp();
		LOG(DEBUG) << __func__;
		}

		ndk::ScopedAStatus commandImpl(CommandId command) override;
		ndk::ScopedAStatus getDescriptor(Descriptor* _aidl_return) override;
		ndk::ScopedAStatus setParameterCommon(const Parameter& param) override;
		ndk::ScopedAStatus setParameterSpecific(const Parameter::Specific& specific) override;
		ndk::ScopedAStatus getParameterSpecific(const Parameter::Id& id,
		Parameter::Specific* specific) override;
		IEffect::Status effectProcessImpl(float* in, float* out, int process) override;
		std::shared_ptr<EffectContext> createContext(const Parameter::Common& common) override;
		RetCode releaseContext() override;

		std::shared_ptr<EffectContext> getContext() override { return mContext; }
		std::string getEffectName() override { return kEffectName; }

		private:
		std::shared_ptr<DownmixContext> mContext;
		ndk::ScopedAStatus getParameterDownmix(const Downmix::Tag& tag, Parameter::Specific* specific);
		};
		} // namespace aidl::android::hardware::audio::effect