Peter Cai
94f2037c77
This will allow us to dynamically load multiple different versions of audio interface implementation into the same sysbta hal process. Note that since we are using a weird suffix here, the default `registerPassthroughServiceImplementation` will not work, and we will have to define our own dynamic symbol for it.
237 lines
9.1 KiB
C++
237 lines
9.1 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_STREAM_H
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#define ANDROID_HARDWARE_AUDIO_STREAM_H
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// clang-format off
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#include PATH(android/hardware/audio/COMMON_TYPES_FILE_VERSION/IStream.h)
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// clang-format on
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#include "ParametersUtil.h"
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#include <vector>
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#include <hardware/audio.h>
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#include <hidl/Status.h>
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#include <hidl/MQDescriptor.h>
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#include <VersionUtils.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 ::android::hardware::audio::CORE_TYPES_CPP_VERSION::implementation::ParametersUtil;
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#if MAJOR_VERSION <= 6
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using ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::implementation::
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AudioChannelBitfield;
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#endif
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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 Stream : public IStream, public ParametersUtil {
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Stream(bool isInput, audio_stream_t* stream);
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/** 1GiB is the maximum buffer size the HAL client is allowed to request.
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* This value has been chosen to be under SIZE_MAX and still big enough
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* for all audio use case.
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* Keep private for 2.0, put in .hal in 2.1
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*/
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static constexpr uint32_t MAX_BUFFER_SIZE = 2 << 30 /* == 1GiB */;
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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> 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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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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// Utility methods for extending interfaces.
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static Result analyzeStatus(const char* funcName, int status);
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static Result analyzeStatus(const char* funcName, int status,
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const std::vector<int>& ignoreErrors);
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private:
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const bool mIsInput;
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audio_stream_t* mStream;
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virtual ~Stream();
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// Methods from ParametersUtil.
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char* halGetParameters(const char* keys) override;
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int halSetParameters(const char* keysAndValues) override;
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};
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template <typename T>
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struct StreamMmap : public RefBase {
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explicit StreamMmap(T* stream) : mStream(stream) {}
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Return<Result> start();
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Return<Result> stop();
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Return<void> createMmapBuffer(int32_t minSizeFrames, size_t frameSize,
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IStream::createMmapBuffer_cb _hidl_cb);
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Return<void> getMmapPosition(IStream::getMmapPosition_cb _hidl_cb);
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private:
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StreamMmap() {}
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T* mStream;
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};
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template <typename T>
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Return<Result> StreamMmap<T>::start() {
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if (mStream->start == NULL) return Result::NOT_SUPPORTED;
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int result = mStream->start(mStream);
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return Stream::analyzeStatus("start", result);
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}
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template <typename T>
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Return<Result> StreamMmap<T>::stop() {
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if (mStream->stop == NULL) return Result::NOT_SUPPORTED;
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int result = mStream->stop(mStream);
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return Stream::analyzeStatus("stop", result);
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}
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template <typename T>
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Return<void> StreamMmap<T>::createMmapBuffer(int32_t minSizeFrames, size_t frameSize,
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IStream::createMmapBuffer_cb _hidl_cb) {
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Result retval(Result::NOT_SUPPORTED);
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MmapBufferInfo info;
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native_handle_t* hidlHandle = nullptr;
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if (mStream->create_mmap_buffer != NULL) {
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if (minSizeFrames <= 0) {
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retval = Result::INVALID_ARGUMENTS;
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goto exit;
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}
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struct audio_mmap_buffer_info halInfo;
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retval = Stream::analyzeStatus(
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"create_mmap_buffer", mStream->create_mmap_buffer(mStream, minSizeFrames, &halInfo));
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if (retval == Result::OK) {
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hidlHandle = native_handle_create(1, 0);
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hidlHandle->data[0] = halInfo.shared_memory_fd;
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// Negative buffer size frame is a legacy hack to indicate that the buffer
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// is shareable to applications before the relevant flag was introduced
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bool applicationShareable =
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halInfo.flags & AUDIO_MMAP_APPLICATION_SHAREABLE || halInfo.buffer_size_frames < 0;
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halInfo.buffer_size_frames = abs(halInfo.buffer_size_frames);
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info.sharedMemory = // hidl_memory size must always be positive
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hidl_memory("audio_buffer", hidlHandle, frameSize * halInfo.buffer_size_frames);
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#if MAJOR_VERSION == 2
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if (applicationShareable) {
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halInfo.buffer_size_frames *= -1;
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}
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#else
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info.flags =
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halInfo.flags | (applicationShareable ? MmapBufferFlag::APPLICATION_SHAREABLE
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: MmapBufferFlag::NONE);
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#endif
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info.bufferSizeFrames = halInfo.buffer_size_frames;
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info.burstSizeFrames = halInfo.burst_size_frames;
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}
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}
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exit:
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_hidl_cb(retval, info);
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if (hidlHandle != nullptr) {
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native_handle_delete(hidlHandle);
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}
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return Void();
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}
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template <typename T>
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Return<void> StreamMmap<T>::getMmapPosition(IStream::getMmapPosition_cb _hidl_cb) {
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Result retval(Result::NOT_SUPPORTED);
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MmapPosition position;
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if (mStream->get_mmap_position != NULL) {
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struct audio_mmap_position halPosition;
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retval = Stream::analyzeStatus("get_mmap_position",
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mStream->get_mmap_position(mStream, &halPosition));
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if (retval == Result::OK) {
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position.timeNanoseconds = halPosition.time_nanoseconds;
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position.positionFrames = halPosition.position_frames;
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}
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}
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_hidl_cb(retval, position);
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return Void();
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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_STREAM_H
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