410 lines
17 KiB
C++
410 lines
17 KiB
C++
/*
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* Copyright (C) 2023 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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#pragma once
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#include <atomic>
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#include <memory>
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#include <mutex>
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#include <string_view>
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#include <aidl/android/hardware/audio/common/AudioOffloadMetadata.h>
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#include <aidl/android/hardware/audio/core/BpStreamCommon.h>
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#include <aidl/android/hardware/audio/core/BpStreamIn.h>
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#include <aidl/android/hardware/audio/core/BpStreamOut.h>
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#include <aidl/android/hardware/audio/core/MmapBufferDescriptor.h>
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#include <fmq/AidlMessageQueue.h>
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#include <media/audiohal/EffectHalInterface.h>
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#include <media/audiohal/StreamHalInterface.h>
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#include <media/AudioParameter.h>
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#include "ConversionHelperAidl.h"
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#include "StreamPowerLog.h"
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using ::aidl::android::hardware::audio::common::AudioOffloadMetadata;
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using ::aidl::android::hardware::audio::core::MmapBufferDescriptor;
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namespace android {
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class StreamContextAidl {
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public:
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typedef AidlMessageQueue<::aidl::android::hardware::audio::core::StreamDescriptor::Command,
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::aidl::android::hardware::common::fmq::SynchronizedReadWrite> CommandMQ;
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typedef AidlMessageQueue<::aidl::android::hardware::audio::core::StreamDescriptor::Reply,
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::aidl::android::hardware::common::fmq::SynchronizedReadWrite> ReplyMQ;
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typedef AidlMessageQueue<int8_t,
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::aidl::android::hardware::common::fmq::SynchronizedReadWrite> DataMQ;
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explicit StreamContextAidl(
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::aidl::android::hardware::audio::core::StreamDescriptor& descriptor,
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bool isAsynchronous)
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: mFrameSizeBytes(descriptor.frameSizeBytes),
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mCommandMQ(new CommandMQ(descriptor.command)),
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mReplyMQ(new ReplyMQ(descriptor.reply)),
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mBufferSizeFrames(descriptor.bufferSizeFrames),
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mDataMQ(maybeCreateDataMQ(descriptor)),
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mIsAsynchronous(isAsynchronous),
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mIsMmapped(isMmapped(descriptor)),
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mMmapBufferDescriptor(maybeGetMmapBuffer(descriptor)) {}
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StreamContextAidl(StreamContextAidl&& other) :
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mFrameSizeBytes(other.mFrameSizeBytes),
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mCommandMQ(std::move(other.mCommandMQ)),
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mReplyMQ(std::move(other.mReplyMQ)),
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mBufferSizeFrames(other.mBufferSizeFrames),
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mDataMQ(std::move(other.mDataMQ)),
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mIsAsynchronous(other.mIsAsynchronous),
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mIsMmapped(other.mIsMmapped),
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mMmapBufferDescriptor(std::move(other.mMmapBufferDescriptor)) {}
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StreamContextAidl& operator=(StreamContextAidl&& other) {
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mFrameSizeBytes = other.mFrameSizeBytes;
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mCommandMQ = std::move(other.mCommandMQ);
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mReplyMQ = std::move(other.mReplyMQ);
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mBufferSizeFrames = other.mBufferSizeFrames;
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mDataMQ = std::move(other.mDataMQ);
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mIsAsynchronous = other.mIsAsynchronous;
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mIsMmapped = other.mIsMmapped;
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mMmapBufferDescriptor = std::move(other.mMmapBufferDescriptor);
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return *this;
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}
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bool isValid() const {
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return mFrameSizeBytes != 0 &&
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mCommandMQ != nullptr && mCommandMQ->isValid() &&
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mReplyMQ != nullptr && mReplyMQ->isValid() &&
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(mDataMQ == nullptr || (
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mDataMQ->isValid() &&
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mDataMQ->getQuantumCount() * mDataMQ->getQuantumSize() >=
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mFrameSizeBytes * mBufferSizeFrames)) &&
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(!mIsMmapped || mMmapBufferDescriptor.sharedMemory.fd.get() >= 0);
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}
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size_t getBufferSizeBytes() const { return mFrameSizeBytes * mBufferSizeFrames; }
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size_t getBufferSizeFrames() const { return mBufferSizeFrames; }
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CommandMQ* getCommandMQ() const { return mCommandMQ.get(); }
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DataMQ* getDataMQ() const { return mDataMQ.get(); }
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size_t getFrameSizeBytes() const { return mFrameSizeBytes; }
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ReplyMQ* getReplyMQ() const { return mReplyMQ.get(); }
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bool isAsynchronous() const { return mIsAsynchronous; }
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bool isMmapped() const { return mIsMmapped; }
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const MmapBufferDescriptor& getMmapBufferDescriptor() const { return mMmapBufferDescriptor; }
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private:
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static std::unique_ptr<DataMQ> maybeCreateDataMQ(
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const ::aidl::android::hardware::audio::core::StreamDescriptor& descriptor) {
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using Tag = ::aidl::android::hardware::audio::core::StreamDescriptor::AudioBuffer::Tag;
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if (descriptor.audio.getTag() == Tag::fmq) {
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return std::make_unique<DataMQ>(descriptor.audio.get<Tag::fmq>());
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}
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return nullptr;
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}
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static bool isMmapped(
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const ::aidl::android::hardware::audio::core::StreamDescriptor& descriptor) {
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using Tag = ::aidl::android::hardware::audio::core::StreamDescriptor::AudioBuffer::Tag;
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return descriptor.audio.getTag() == Tag::mmap;
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}
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static MmapBufferDescriptor maybeGetMmapBuffer(
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::aidl::android::hardware::audio::core::StreamDescriptor& descriptor) {
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using Tag = ::aidl::android::hardware::audio::core::StreamDescriptor::AudioBuffer::Tag;
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if (descriptor.audio.getTag() == Tag::mmap) {
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return std::move(descriptor.audio.get<Tag::mmap>());
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}
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return {};
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}
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size_t mFrameSizeBytes;
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std::unique_ptr<CommandMQ> mCommandMQ;
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std::unique_ptr<ReplyMQ> mReplyMQ;
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size_t mBufferSizeFrames;
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std::unique_ptr<DataMQ> mDataMQ;
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bool mIsAsynchronous;
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bool mIsMmapped;
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MmapBufferDescriptor mMmapBufferDescriptor;
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};
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class StreamHalAidl : public virtual StreamHalInterface, public ConversionHelperAidl {
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public:
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// Return size of input/output buffer in bytes for this stream - eg. 4800.
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status_t getBufferSize(size_t *size) override;
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// Return the base configuration of the stream:
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// - channel mask;
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// - format - e.g. AUDIO_FORMAT_PCM_16_BIT;
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// - sampling rate in Hz - eg. 44100.
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status_t getAudioProperties(audio_config_base_t *configBase) override;
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// Set audio stream parameters.
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status_t setParameters(const String8& kvPairs) override;
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// Get audio stream parameters.
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status_t getParameters(const String8& keys, String8 *values) override;
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// Return the frame size (number of bytes per sample) of a stream.
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status_t getFrameSize(size_t *size) override;
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// Add or remove the effect on the stream.
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status_t addEffect(sp<EffectHalInterface> effect) override;
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status_t removeEffect(sp<EffectHalInterface> effect) override;
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// Put the audio hardware input/output into standby mode.
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status_t standby() override;
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status_t dump(int fd, const Vector<String16>& args) override;
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// Start a stream operating in mmap mode.
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status_t start() override;
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// Stop a stream operating in mmap mode.
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status_t stop() override;
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// Retrieve information on the data buffer in mmap mode.
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status_t createMmapBuffer(int32_t minSizeFrames,
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struct audio_mmap_buffer_info *info) override;
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// Get current read/write position in the mmap buffer
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status_t getMmapPosition(struct audio_mmap_position *position) override;
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// Set the priority of the thread that interacts with the HAL
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// (must match the priority of the audioflinger's thread that calls 'read' / 'write')
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status_t setHalThreadPriority(int priority) override;
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status_t legacyCreateAudioPatch(const struct audio_port_config& port,
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std::optional<audio_source_t> source,
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audio_devices_t type) override;
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status_t legacyReleaseAudioPatch() override;
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protected:
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template<class T>
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static std::shared_ptr<::aidl::android::hardware::audio::core::IStreamCommon> getStreamCommon(
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const std::shared_ptr<T>& stream);
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// Subclasses can not be constructed directly by clients.
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StreamHalAidl(std::string_view className,
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bool isInput,
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const audio_config& config,
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int32_t nominalLatency,
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StreamContextAidl&& context,
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamCommon>& stream);
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~StreamHalAidl() override;
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status_t getLatency(uint32_t *latency);
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status_t getObservablePosition(int64_t *frames, int64_t *timestamp);
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status_t getHardwarePosition(int64_t *frames, int64_t *timestamp);
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status_t getXruns(int32_t *frames);
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status_t transfer(void *buffer, size_t bytes, size_t *transferred);
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status_t pause(
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr);
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status_t resume(
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr);
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status_t drain(bool earlyNotify,
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr);
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status_t flush(
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr);
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status_t exit();
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const bool mIsInput;
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const audio_config_base_t mConfig;
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const StreamContextAidl mContext;
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private:
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static audio_config_base_t configToBase(const audio_config& config) {
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audio_config_base_t result = AUDIO_CONFIG_BASE_INITIALIZER;
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result.sample_rate = config.sample_rate;
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result.channel_mask = config.channel_mask;
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result.format = config.format;
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return result;
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}
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::aidl::android::hardware::audio::core::StreamDescriptor::State getState() {
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std::lock_guard l(mLock);
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return mLastReply.state;
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}
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status_t sendCommand(
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const ::aidl::android::hardware::audio::core::StreamDescriptor::Command &command,
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr,
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bool safeFromNonWorkerThread = false);
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status_t updateCountersIfNeeded(
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply* reply = nullptr);
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamCommon> mStream;
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std::mutex mLock;
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::aidl::android::hardware::audio::core::StreamDescriptor::Reply mLastReply GUARDED_BY(mLock);
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// mStreamPowerLog is used for audio signal power logging.
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StreamPowerLog mStreamPowerLog;
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std::atomic<pid_t> mWorkerTid = -1;
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};
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class CallbackBroker;
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class StreamOutHalAidl : public StreamOutHalInterface, public StreamHalAidl {
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public:
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// Extract the output stream parameters and set by AIDL APIs.
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status_t setParameters(const String8& kvPairs) override;
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// Return the audio hardware driver estimated latency in milliseconds.
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status_t getLatency(uint32_t *latency) override;
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// Use this method in situations where audio mixing is done in the hardware.
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status_t setVolume(float left, float right) override;
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// Selects the audio presentation (if available).
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status_t selectPresentation(int presentationId, int programId) override;
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// Write audio buffer to driver.
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status_t write(const void *buffer, size_t bytes, size_t *written) override;
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// Return the number of audio frames written by the audio dsp to DAC since
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// the output has exited standby.
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status_t getRenderPosition(uint32_t *dspFrames) override;
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// Get the local time at which the next write to the audio driver will be presented.
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status_t getNextWriteTimestamp(int64_t *timestamp) override;
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// Set the callback for notifying completion of non-blocking write and drain.
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status_t setCallback(wp<StreamOutHalInterfaceCallback> callback) override;
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// Returns whether pause and resume operations are supported.
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status_t supportsPauseAndResume(bool *supportsPause, bool *supportsResume) override;
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// Notifies to the audio driver to resume playback following a pause.
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status_t pause() override;
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// Notifies to the audio driver to resume playback following a pause.
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status_t resume() override;
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// Returns whether drain operation is supported.
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status_t supportsDrain(bool *supportsDrain) override;
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// Requests notification when data buffered by the driver/hardware has been played.
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status_t drain(bool earlyNotify) override;
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// Notifies to the audio driver to flush the queued data.
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status_t flush() override;
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// Return a recent count of the number of audio frames presented to an external observer.
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status_t getPresentationPosition(uint64_t *frames, struct timespec *timestamp) override;
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// Called when the metadata of the stream's source has been changed.
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status_t updateSourceMetadata(const SourceMetadata& sourceMetadata) override;
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// Returns the Dual Mono mode presentation setting.
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status_t getDualMonoMode(audio_dual_mono_mode_t* mode) override;
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// Sets the Dual Mono mode presentation on the output device.
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status_t setDualMonoMode(audio_dual_mono_mode_t mode) override;
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// Returns the Audio Description Mix level in dB.
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status_t getAudioDescriptionMixLevel(float* leveldB) override;
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// Sets the Audio Description Mix level in dB.
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status_t setAudioDescriptionMixLevel(float leveldB) override;
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// Retrieves current playback rate parameters.
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status_t getPlaybackRateParameters(audio_playback_rate_t* playbackRate) override;
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// Sets the playback rate parameters that control playback behavior.
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status_t setPlaybackRateParameters(const audio_playback_rate_t& playbackRate) override;
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status_t setEventCallback(const sp<StreamOutHalInterfaceEventCallback>& callback) override;
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status_t setLatencyMode(audio_latency_mode_t mode) override;
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status_t getRecommendedLatencyModes(std::vector<audio_latency_mode_t> *modes) override;
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status_t setLatencyModeCallback(
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const sp<StreamOutHalInterfaceLatencyModeCallback>& callback) override;
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status_t exit() override;
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private:
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friend class sp<StreamOutHalAidl>;
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static ConversionResult<::aidl::android::hardware::audio::common::SourceMetadata>
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legacy2aidl_SourceMetadata(const StreamOutHalInterface::SourceMetadata& legacy);
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamOut> mStream;
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const wp<CallbackBroker> mCallbackBroker;
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AudioOffloadMetadata mOffloadMetadata;
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// Can not be constructed directly by clients.
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StreamOutHalAidl(
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const audio_config& config, StreamContextAidl&& context, int32_t nominalLatency,
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamOut>& stream,
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const sp<CallbackBroker>& callbackBroker);
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~StreamOutHalAidl() override;
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// Filter and update the offload metadata. The parameters which are related to the offload
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// metadata will be removed after filtering.
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status_t filterAndUpdateOffloadMetadata(AudioParameter ¶meters);
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};
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class MicrophoneInfoProvider;
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class StreamInHalAidl : public StreamInHalInterface, public StreamHalAidl {
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public:
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// Set the input gain for the audio driver.
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status_t setGain(float gain) override;
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// Read audio buffer in from driver.
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status_t read(void *buffer, size_t bytes, size_t *read) override;
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// Return the amount of input frames lost in the audio driver.
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status_t getInputFramesLost(uint32_t *framesLost) override;
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// Return a recent count of the number of audio frames received and
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// the clock time associated with that frame count.
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status_t getCapturePosition(int64_t *frames, int64_t *time) override;
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// Get active microphones
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status_t getActiveMicrophones(std::vector<media::MicrophoneInfoFw> *microphones) override;
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// Set microphone direction (for processing)
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status_t setPreferredMicrophoneDirection(
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audio_microphone_direction_t direction) override;
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// Set microphone zoom (for processing)
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status_t setPreferredMicrophoneFieldDimension(float zoom) override;
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// Called when the metadata of the stream's sink has been changed.
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status_t updateSinkMetadata(const SinkMetadata& sinkMetadata) override;
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private:
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friend class sp<StreamInHalAidl>;
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static ConversionResult<::aidl::android::hardware::audio::common::SinkMetadata>
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legacy2aidl_SinkMetadata(const StreamInHalInterface::SinkMetadata& legacy);
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamIn> mStream;
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const wp<MicrophoneInfoProvider> mMicInfoProvider;
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// Can not be constructed directly by clients.
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StreamInHalAidl(
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const audio_config& config, StreamContextAidl&& context, int32_t nominalLatency,
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const std::shared_ptr<::aidl::android::hardware::audio::core::IStreamIn>& stream,
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const sp<MicrophoneInfoProvider>& micInfoProvider);
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~StreamInHalAidl() override = default;
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};
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} // namespace android
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