Konsta
133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/*
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* Copyright (C) 2025 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 <mutex>
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#include <string>
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#include "core-impl/DriverStubImpl.h"
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#include "core-impl/Stream.h"
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namespace aidl::android::hardware::audio::core {
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namespace mmap {
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struct DspSimulatorState {
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const bool isInput;
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const int sampleRate;
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const int frameSizeBytes;
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const size_t bufferSizeBytes;
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std::mutex lock;
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// The lock is also used to prevent un-mapping while the memory is in use.
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uint8_t* sharedMemory GUARDED_BY(lock) = nullptr;
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StreamDescriptor::Position mmapPos GUARDED_BY(lock);
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};
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class DspSimulatorLogic : public ::android::hardware::audio::common::StreamLogic {
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protected:
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explicit DspSimulatorLogic(DspSimulatorState& sharedState) : mSharedState(sharedState) {}
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std::string init() override;
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Status cycle() override;
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private:
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DspSimulatorState& mSharedState;
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uint32_t mCycleDurationUs = 0;
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uint8_t* mMemBegin = nullptr;
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uint8_t* mMemPos = nullptr;
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int64_t mLastFrames = 0;
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};
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class DspSimulatorWorker
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: public ::android::hardware::audio::common::StreamWorker<DspSimulatorLogic> {
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public:
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explicit DspSimulatorWorker(DspSimulatorState& sharedState)
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: ::android::hardware::audio::common::StreamWorker<DspSimulatorLogic>(sharedState) {}
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};
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} // namespace mmap
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class DriverMmapStubImpl : public DriverStubImpl {
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public:
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explicit DriverMmapStubImpl(const StreamContext& context);
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::android::status_t init(DriverCallbackInterface* callback) override;
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::android::status_t drain(StreamDescriptor::DrainMode drainMode) override;
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::android::status_t pause() override;
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::android::status_t start() override;
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::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
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int32_t* latencyMs) override;
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void shutdown() override;
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::android::status_t refinePosition(StreamDescriptor::Position* position) override;
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::android::status_t getMmapPositionAndLatency(StreamDescriptor::Position* position,
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int32_t* latency) override;
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protected:
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::android::status_t initSharedMemory(int ashmemFd);
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private:
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::android::status_t releaseSharedMemory() REQUIRES(mState.lock);
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::android::status_t startWorkerIfNeeded();
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mmap::DspSimulatorState mState;
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mmap::DspSimulatorWorker mDspWorker;
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bool mDspWorkerStarted = false;
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};
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class StreamMmapStub : public StreamCommonImpl, public DriverMmapStubImpl {
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public:
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static const std::string kCreateMmapBufferName;
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StreamMmapStub(StreamContext* context, const Metadata& metadata);
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~StreamMmapStub();
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ndk::ScopedAStatus getVendorParameters(const std::vector<std::string>& in_ids,
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std::vector<VendorParameter>* _aidl_return) override;
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ndk::ScopedAStatus setVendorParameters(const std::vector<VendorParameter>& in_parameters,
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bool in_async) override;
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private:
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ndk::ScopedAStatus createMmapBuffer(MmapBufferDescriptor* desc);
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ndk::ScopedFileDescriptor mSharedMemoryFd;
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};
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class StreamInMmapStub final : public StreamIn, public StreamMmapStub {
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public:
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friend class ndk::SharedRefBase;
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StreamInMmapStub(
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StreamContext&& context,
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const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
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const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones);
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private:
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void onClose(StreamDescriptor::State) override { defaultOnClose(); }
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};
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class StreamOutMmapStub final : public StreamOut, public StreamMmapStub {
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public:
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friend class ndk::SharedRefBase;
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StreamOutMmapStub(
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StreamContext&& context,
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const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata,
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const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
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offloadInfo);
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private:
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void onClose(StreamDescriptor::State) override { defaultOnClose(); }
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};
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} // namespace aidl::android::hardware::audio::core
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