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160 lines
5.6 KiB
160 lines
5.6 KiB
/*
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* Copyright (C) 2016 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 AAUDIO_AAUDIO_SERVICE_H
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#define AAUDIO_AAUDIO_SERVICE_H
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#include <time.h>
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#include <pthread.h>
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#include <binder/BinderService.h>
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#include <media/AudioClient.h>
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#include <aaudio/AAudio.h>
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#include <aaudio/BnAAudioService.h>
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#include "binding/AAudioCommon.h"
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#include "binding/AAudioBinderAdapter.h"
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#include "binding/AAudioServiceInterface.h"
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#include "AAudioServiceStreamBase.h"
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#include "AAudioStreamTracker.h"
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namespace android {
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#define AAUDIO_SERVICE_NAME "media.aaudio"
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class AAudioService :
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public BinderService<AAudioService>,
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public aaudio::BnAAudioService
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{
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friend class BinderService<AAudioService>;
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public:
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AAudioService();
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virtual ~AAudioService() = default;
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aaudio::AAudioServiceInterface& asAAudioServiceInterface() {
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return mAdapter;
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}
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static const char* getServiceName() { return AAUDIO_SERVICE_NAME; }
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virtual status_t dump(int fd, const Vector<String16>& args) override;
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binder::Status registerClient(const ::android::sp<::aaudio::IAAudioClient>& client) override;
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binder::Status openStream(const ::aaudio::StreamRequest& request,
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::aaudio::StreamParameters* paramsOut,
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int32_t* _aidl_return) override;
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binder::Status closeStream(int32_t streamHandle, int32_t* _aidl_return) override;
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binder::Status
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getStreamDescription(int32_t streamHandle, ::aaudio::Endpoint* endpoint,
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int32_t* _aidl_return) override;
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binder::Status startStream(int32_t streamHandle, int32_t* _aidl_return) override;
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binder::Status pauseStream(int32_t streamHandle, int32_t* _aidl_return) override;
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binder::Status stopStream(int32_t streamHandle, int32_t* _aidl_return) override;
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binder::Status flushStream(int32_t streamHandle, int32_t* _aidl_return) override;
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binder::Status
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registerAudioThread(int32_t streamHandle, int32_t clientThreadId, int64_t periodNanoseconds,
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int32_t* _aidl_return) override;
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binder::Status unregisterAudioThread(int32_t streamHandle, int32_t clientThreadId,
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int32_t* _aidl_return) override;
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aaudio_result_t startClient(aaudio::aaudio_handle_t streamHandle,
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const android::AudioClient& client,
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const audio_attributes_t *attr,
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audio_port_handle_t *clientHandle);
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aaudio_result_t stopClient(aaudio::aaudio_handle_t streamHandle,
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audio_port_handle_t clientHandle);
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// ===============================================================================
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// The following public methods are only called from the service and NOT by Binder.
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// ===============================================================================
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aaudio_result_t disconnectStreamByPortHandle(audio_port_handle_t portHandle);
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/*
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* This is only called from within the Service.
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* It bypasses the permission checks in closeStream(handle).
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*/
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aaudio_result_t closeStream(sp<aaudio::AAudioServiceStreamBase> serviceStream);
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private:
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class Adapter : public aaudio::AAudioBinderAdapter {
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public:
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explicit Adapter(AAudioService *service)
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: aaudio::AAudioBinderAdapter(service),
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mService(service) {}
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aaudio_result_t startClient(aaudio::aaudio_handle_t streamHandle,
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const android::AudioClient &client,
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const audio_attributes_t *attr,
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audio_port_handle_t *clientHandle) override {
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return mService->startClient(streamHandle, client, attr, clientHandle);
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}
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aaudio_result_t stopClient(aaudio::aaudio_handle_t streamHandle,
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audio_port_handle_t clientHandle) override {
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return mService->stopClient(streamHandle, clientHandle);
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}
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private:
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AAudioService* const mService;
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};
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Adapter mAdapter;
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/** @return true if the client is the audioserver
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*/
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bool isCallerInService();
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/**
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* Lookup stream and then validate access to the stream.
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* @param streamHandle
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* @return
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*/
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sp<aaudio::AAudioServiceStreamBase> convertHandleToServiceStream(
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aaudio::aaudio_handle_t streamHandle);
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android::AudioClient mAudioClient;
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aaudio::AAudioStreamTracker mStreamTracker;
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// We use a lock to prevent thread A from reopening an exclusive stream
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// after thread B steals thread A's exclusive MMAP resource stream.
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std::recursive_mutex mOpenLock;
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// TODO Extract the priority constants from services/audioflinger/Threads.cpp
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// and share them with this code. Look for "kPriorityFastMixer".
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static constexpr int32_t kRealTimeAudioPriorityClient = 2;
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static constexpr int32_t kRealTimeAudioPriorityService = 3;
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};
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} /* namespace android */
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#endif //AAUDIO_AAUDIO_SERVICE_H
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