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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef AAUDIO_AAUDIO_SERVICE_H
     18 #define AAUDIO_AAUDIO_SERVICE_H
     19 
     20 #include <time.h>
     21 #include <pthread.h>
     22 
     23 #include <binder/BinderService.h>
     24 #include <media/AudioClient.h>
     25 
     26 #include <aaudio/AAudio.h>
     27 
     28 #include "binding/AAudioCommon.h"
     29 #include "binding/AAudioServiceInterface.h"
     30 #include "binding/IAAudioService.h"
     31 
     32 #include "AAudioServiceStreamBase.h"
     33 #include "AAudioStreamTracker.h"
     34 
     35 namespace android {
     36 
     37 class AAudioService :
     38     public BinderService<AAudioService>,
     39     public BnAAudioService,
     40     public aaudio::AAudioServiceInterface
     41 {
     42     friend class BinderService<AAudioService>;
     43 
     44 public:
     45     AAudioService();
     46     virtual ~AAudioService();
     47 
     48     static const char* getServiceName() { return AAUDIO_SERVICE_NAME; }
     49 
     50     virtual status_t        dump(int fd, const Vector<String16>& args) override;
     51 
     52     virtual void            registerClient(const sp<IAAudioClient>& client);
     53 
     54     aaudio::aaudio_handle_t openStream(const aaudio::AAudioStreamRequest &request,
     55                                        aaudio::AAudioStreamConfiguration &configurationOutput)
     56                                        override;
     57 
     58     aaudio_result_t closeStream(aaudio::aaudio_handle_t streamHandle) override;
     59 
     60     aaudio_result_t getStreamDescription(
     61                 aaudio::aaudio_handle_t streamHandle,
     62                 aaudio::AudioEndpointParcelable &parcelable) override;
     63 
     64     aaudio_result_t startStream(aaudio::aaudio_handle_t streamHandle) override;
     65 
     66     aaudio_result_t pauseStream(aaudio::aaudio_handle_t streamHandle) override;
     67 
     68     aaudio_result_t stopStream(aaudio::aaudio_handle_t streamHandle) override;
     69 
     70     aaudio_result_t flushStream(aaudio::aaudio_handle_t streamHandle) override;
     71 
     72     aaudio_result_t registerAudioThread(aaudio::aaudio_handle_t streamHandle,
     73                                                 pid_t tid,
     74                                                 int64_t periodNanoseconds) override;
     75 
     76     aaudio_result_t unregisterAudioThread(aaudio::aaudio_handle_t streamHandle,
     77                                                   pid_t tid) override;
     78 
     79     aaudio_result_t startClient(aaudio::aaudio_handle_t streamHandle,
     80                                       const android::AudioClient& client,
     81                                       audio_port_handle_t *clientHandle) override;
     82 
     83     aaudio_result_t stopClient(aaudio::aaudio_handle_t streamHandle,
     84                                        audio_port_handle_t clientHandle) override;
     85 
     86     aaudio_result_t disconnectStreamByPortHandle(audio_port_handle_t portHandle);
     87 
     88 private:
     89 
     90     /**
     91      * Lookup stream and then validate access to the stream.
     92      * @param streamHandle
     93      * @return
     94      */
     95     sp<aaudio::AAudioServiceStreamBase> convertHandleToServiceStream(
     96             aaudio::aaudio_handle_t streamHandle);
     97 
     98 
     99 
    100     bool releaseStream(const sp<aaudio::AAudioServiceStreamBase> &serviceStream);
    101 
    102     aaudio_result_t checkForPendingClose(const sp<aaudio::AAudioServiceStreamBase> &serviceStream,
    103                                          aaudio_result_t defaultResult);
    104 
    105     android::AudioClient            mAudioClient;
    106 
    107     aaudio::AAudioStreamTracker     mStreamTracker;
    108 
    109     enum constants {
    110         DEFAULT_AUDIO_PRIORITY = 2
    111     };
    112 };
    113 
    114 } /* namespace android */
    115 
    116 #endif //AAUDIO_AAUDIO_SERVICE_H
    117