| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef AAUDIO_AAUDIO_SERVICE_H |
| #define AAUDIO_AAUDIO_SERVICE_H |
| |
| #include <time.h> |
| #include <pthread.h> |
| |
| #include <binder/BinderService.h> |
| #include <media/AudioClient.h> |
| |
| #include <aaudio/AAudio.h> |
| |
| #include "binding/AAudioCommon.h" |
| #include "binding/AAudioServiceInterface.h" |
| #include "binding/IAAudioService.h" |
| |
| #include "AAudioServiceStreamBase.h" |
| #include "AAudioStreamTracker.h" |
| |
| namespace android { |
| |
| class AAudioService : |
| public BinderService<AAudioService>, |
| public BnAAudioService, |
| public aaudio::AAudioServiceInterface |
| { |
| friend class BinderService<AAudioService>; |
| |
| public: |
| AAudioService(); |
| virtual ~AAudioService(); |
| |
| static const char* getServiceName() { return AAUDIO_SERVICE_NAME; } |
| |
| virtual status_t dump(int fd, const Vector<String16>& args) override; |
| |
| virtual void registerClient(const sp<IAAudioClient>& client); |
| |
| aaudio::aaudio_handle_t openStream(const aaudio::AAudioStreamRequest &request, |
| aaudio::AAudioStreamConfiguration &configurationOutput) |
| override; |
| |
| /* |
| * This is called from Binder. It checks for permissions |
| * and converts the handle passed through Binder to a stream pointer. |
| */ |
| aaudio_result_t closeStream(aaudio::aaudio_handle_t streamHandle) override; |
| |
| aaudio_result_t getStreamDescription( |
| aaudio::aaudio_handle_t streamHandle, |
| aaudio::AudioEndpointParcelable &parcelable) override; |
| |
| aaudio_result_t startStream(aaudio::aaudio_handle_t streamHandle) override; |
| |
| aaudio_result_t pauseStream(aaudio::aaudio_handle_t streamHandle) override; |
| |
| aaudio_result_t stopStream(aaudio::aaudio_handle_t streamHandle) override; |
| |
| aaudio_result_t flushStream(aaudio::aaudio_handle_t streamHandle) override; |
| |
| aaudio_result_t registerAudioThread(aaudio::aaudio_handle_t streamHandle, |
| pid_t tid, |
| int64_t periodNanoseconds) override; |
| |
| aaudio_result_t unregisterAudioThread(aaudio::aaudio_handle_t streamHandle, |
| pid_t tid) override; |
| |
| aaudio_result_t startClient(aaudio::aaudio_handle_t streamHandle, |
| const android::AudioClient& client, |
| const audio_attributes_t *attr, |
| audio_port_handle_t *clientHandle) override; |
| |
| aaudio_result_t stopClient(aaudio::aaudio_handle_t streamHandle, |
| audio_port_handle_t clientHandle) override; |
| |
| // =============================================================================== |
| // The following public methods are only called from the service and NOT by Binder. |
| // =============================================================================== |
| |
| aaudio_result_t disconnectStreamByPortHandle(audio_port_handle_t portHandle); |
| |
| /* |
| * This is only called from within the Service. |
| * It bypasses the permission checks in closeStream(handle). |
| */ |
| aaudio_result_t closeStream(sp<aaudio::AAudioServiceStreamBase> serviceStream); |
| |
| private: |
| |
| /** @return true if the client is the audioserver |
| */ |
| bool isCallerInService(); |
| |
| /** |
| * Lookup stream and then validate access to the stream. |
| * @param streamHandle |
| * @return |
| */ |
| sp<aaudio::AAudioServiceStreamBase> convertHandleToServiceStream( |
| aaudio::aaudio_handle_t streamHandle); |
| |
| android::AudioClient mAudioClient; |
| |
| aaudio::AAudioStreamTracker mStreamTracker; |
| |
| // We use a lock to prevent thread A from reopening an exclusive stream |
| // after thread B steals thread A's exclusive MMAP resource stream. |
| std::recursive_mutex mOpenLock; |
| |
| // TODO Extract the priority constants from services/audioflinger/Threads.cpp |
| // and share them with this code. Look for "kPriorityFastMixer". |
| static constexpr int32_t kRealTimeAudioPriorityClient = 2; |
| static constexpr int32_t kRealTimeAudioPriorityService = 3; |
| |
| }; |
| |
| } /* namespace android */ |
| |
| #endif //AAUDIO_AAUDIO_SERVICE_H |