978ccd40f9
On platform release T, the legacy `audio.a2dp.default` HAL no longer exists, and cannot be trivially restored for generic system-side A2DP audio support. Rather than trying to cling on to its existence (which does not even work anymore even if one did so), it is time to come up with a new solution. This commit introduces a system-side implementation of the generic bluetooth audio HAL. The HAL itself is modelled after the default bluetooth audio HAL, while substantial components of the default audio HAL are also included as it has to also implement the audio HAL interfaces. The audio HAL implementation is delegated to `audio.sysbta.default`, forked from `audio.bluetooth.default` from the Bluetooth apex package. It then communicates with the bluetooth audio HAL interfaces, which need to live in the same process (in this case, the process of the sysbta HAL). This is why we cannot just load `audio.sysbta.default` into the default audio HAL or the audioserver process directly, but rather have to include our own simplistic audio HAL implementation. For now, the audio HAL implementation only includes one for the 6.0 version, but technically, an interface for *every* audio HAL version needs to exist. This, along with other messiness in the sysbta implementation, will be addressed in a future commit. Note that to actually make use of the sysbta audio hal, patches in frameworks/av and packages/modules/Bluetooth are required to introduce support for the property `persist.bluetooth.system_audio_hal.enabled`.
202 lines
8.7 KiB
C++
202 lines
8.7 KiB
C++
/*
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* Copyright (C) 2018 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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#ifndef ANDROID_HARDWARE_AUDIO_STREAMOUT_H
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#define ANDROID_HARDWARE_AUDIO_STREAMOUT_H
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#include PATH(android/hardware/audio/FILE_VERSION/IStreamOut.h)
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#include "Device.h"
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#include "Stream.h"
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#include <atomic>
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#include <memory>
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#include <fmq/EventFlag.h>
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#include <fmq/MessageQueue.h>
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#include <hidl/MQDescriptor.h>
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#include <hidl/Status.h>
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#include <mediautils/Synchronization.h>
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#include <utils/Thread.h>
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namespace android {
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namespace hardware {
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namespace audio {
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namespace CPP_VERSION {
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namespace implementation {
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using ::android::sp;
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using ::android::hardware::hidl_string;
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using ::android::hardware::hidl_vec;
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using ::android::hardware::Return;
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using ::android::hardware::Void;
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using namespace ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION;
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using namespace ::android::hardware::audio::CORE_TYPES_CPP_VERSION;
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using namespace ::android::hardware::audio::CPP_VERSION;
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struct StreamOut : public IStreamOut {
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typedef MessageQueue<WriteCommand, kSynchronizedReadWrite> CommandMQ;
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typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
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typedef MessageQueue<WriteStatus, kSynchronizedReadWrite> StatusMQ;
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StreamOut(const sp<Device>& device, audio_stream_out_t* stream);
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// Methods from ::android::hardware::audio::CPP_VERSION::IStream follow.
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Return<uint64_t> getFrameSize() override;
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Return<uint64_t> getFrameCount() override;
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Return<uint64_t> getBufferSize() override;
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#if MAJOR_VERSION <= 6
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Return<uint32_t> getSampleRate() override;
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#if MAJOR_VERSION == 2
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Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) override;
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Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) override;
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#endif
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Return<void> getSupportedSampleRates(AudioFormat format, getSupportedSampleRates_cb _hidl_cb);
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Return<void> getSupportedChannelMasks(AudioFormat format, getSupportedChannelMasks_cb _hidl_cb);
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Return<Result> setSampleRate(uint32_t sampleRateHz) override;
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Return<AudioChannelBitfield> getChannelMask() override;
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Return<Result> setChannelMask(AudioChannelBitfield mask) override;
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Return<AudioFormat> getFormat() override;
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Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb) override;
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Return<Result> setFormat(AudioFormat format) override;
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#else
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Return<void> getSupportedProfiles(getSupportedProfiles_cb _hidl_cb) override;
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Return<Result> setAudioProperties(const AudioConfigBaseOptional& config) override;
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#endif // MAJOR_VERSION <= 6
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Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb) override;
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Return<Result> addEffect(uint64_t effectId) override;
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Return<Result> removeEffect(uint64_t effectId) override;
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Return<Result> standby() override;
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#if MAJOR_VERSION == 2
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Return<AudioDevice> getDevice() override;
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Return<Result> setDevice(const DeviceAddress& address) override;
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Return<void> getParameters(const hidl_vec<hidl_string>& keys,
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getParameters_cb _hidl_cb) override;
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Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
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Return<Result> setConnectedState(const DeviceAddress& address, bool connected) override;
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#elif MAJOR_VERSION >= 4
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Return<void> getDevices(getDevices_cb _hidl_cb) override;
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Return<Result> setDevices(const hidl_vec<DeviceAddress>& devices) override;
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Return<void> getParameters(const hidl_vec<ParameterValue>& context,
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const hidl_vec<hidl_string>& keys,
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getParameters_cb _hidl_cb) override;
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Return<Result> setParameters(const hidl_vec<ParameterValue>& context,
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const hidl_vec<ParameterValue>& parameters) override;
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#endif
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Return<Result> setHwAvSync(uint32_t hwAvSync) override;
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Return<Result> close() override;
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Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) override;
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#if MAJOR_VERSION == 2
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Return<void> debugDump(const hidl_handle& fd) override;
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#endif
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// Methods from ::android::hardware::audio::CPP_VERSION::IStreamOut follow.
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Return<uint32_t> getLatency() override;
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Return<Result> setVolume(float left, float right) override;
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Return<void> prepareForWriting(uint32_t frameSize, uint32_t framesCount,
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prepareForWriting_cb _hidl_cb) override;
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Return<void> getRenderPosition(getRenderPosition_cb _hidl_cb) override;
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Return<void> getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb) override;
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Return<Result> setCallback(const sp<IStreamOutCallback>& callback) override;
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Return<Result> clearCallback() override;
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Return<void> supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb) override;
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Return<Result> pause() override;
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Return<Result> resume() override;
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Return<bool> supportsDrain() override;
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Return<Result> drain(AudioDrain type) override;
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Return<Result> flush() override;
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Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb) override;
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Return<Result> start() override;
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Return<Result> stop() override;
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Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
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Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
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#if MAJOR_VERSION >= 4
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Return<Result> selectPresentation(int32_t presentationId, int32_t programId) override;
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#if MAJOR_VERSION <= 6
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Return<void> updateSourceMetadata(const SourceMetadata& sourceMetadata) override;
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#else
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Return<Result> updateSourceMetadata(const SourceMetadata& sourceMetadata) override;
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#endif
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#endif // MAJOR_VERSION >= 4
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#if MAJOR_VERSION >= 6
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Return<void> getDualMonoMode(getDualMonoMode_cb _hidl_cb) override;
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Return<Result> setDualMonoMode(DualMonoMode mode) override;
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Return<void> getAudioDescriptionMixLevel(getAudioDescriptionMixLevel_cb _hidl_cb) override;
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Return<Result> setAudioDescriptionMixLevel(float leveldB) override;
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Return<void> getPlaybackRateParameters(getPlaybackRateParameters_cb _hidl_cb) override;
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Return<Result> setPlaybackRateParameters(const PlaybackRate& playbackRate) override;
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#endif
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static Result getPresentationPositionImpl(audio_stream_out_t* stream, uint64_t* frames,
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TimeSpec* timeStamp);
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#if MAJOR_VERSION >= 6
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Return<Result> setEventCallback(const sp<IStreamOutEventCallback>& callback) override;
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#endif
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private:
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#if MAJOR_VERSION >= 4
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Result doUpdateSourceMetadata(const SourceMetadata& sourceMetadata);
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#if MAJOR_VERSION >= 7
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Result doUpdateSourceMetadataV7(const SourceMetadata& sourceMetadata);
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#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
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Return<Result> setLatencyMode(LatencyMode mode) override;
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Return<void> getRecommendedLatencyModes(getRecommendedLatencyModes_cb _hidl_cb) override;
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Return<Result> setLatencyModeCallback(
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const sp<IStreamOutLatencyModeCallback>& callback) override;
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#endif
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#endif
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#endif // MAJOR_VERSION >= 4
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const sp<Device> mDevice;
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audio_stream_out_t* mStream;
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const sp<Stream> mStreamCommon;
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const sp<StreamMmap<audio_stream_out_t>> mStreamMmap;
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mediautils::atomic_sp<IStreamOutCallback> mCallback; // for non-blocking write and drain
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#if MAJOR_VERSION >= 6
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mediautils::atomic_sp<IStreamOutEventCallback> mEventCallback;
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#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
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mediautils::atomic_sp<IStreamOutLatencyModeCallback> mLatencyModeCallback;
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#endif
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#endif
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std::unique_ptr<CommandMQ> mCommandMQ;
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std::unique_ptr<DataMQ> mDataMQ;
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std::unique_ptr<StatusMQ> mStatusMQ;
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EventFlag* mEfGroup;
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std::atomic<bool> mStopWriteThread;
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sp<Thread> mWriteThread;
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virtual ~StreamOut();
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static int asyncCallback(stream_callback_event_t event, void* param, void* cookie);
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#if MAJOR_VERSION >= 6
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static int asyncEventCallback(stream_event_callback_type_t event, void* param, void* cookie);
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#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
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static void latencyModeCallback(audio_latency_mode_t* modes, size_t num_modes, void* cookie);
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#endif
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#endif
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};
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} // namespace implementation
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} // namespace CPP_VERSION
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} // namespace audio
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} // namespace hardware
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} // namespace android
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#endif // ANDROID_HARDWARE_AUDIO_STREAMOUT_H
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