101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
/*
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* Copyright (C) 2017 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_STREAM_MMAP_H
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#define AAUDIO_AAUDIO_SERVICE_STREAM_MMAP_H
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#include <atomic>
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#include <android-base/thread_annotations.h>
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#include <android-base/unique_fd.h>
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#include <media/audiohal/StreamHalInterface.h>
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#include <media/MmapStreamCallback.h>
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#include <media/MmapStreamInterface.h>
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#include <utils/RefBase.h>
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#include <utils/String16.h>
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#include <utils/Vector.h>
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#include "binding/AAudioServiceMessage.h"
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#include "AAudioServiceStreamBase.h"
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#include "binding/AudioEndpointParcelable.h"
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#include "SharedMemoryProxy.h"
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#include "TimestampScheduler.h"
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#include "utility/MonotonicCounter.h"
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namespace aaudio {
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/**
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* These corresponds to an EXCLUSIVE mode MMAP client stream.
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* It has exclusive use of one AAudioServiceEndpointMMAP to communicate with the underlying
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* device or port.
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*/
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class AAudioServiceStreamMMAP : public AAudioServiceStreamBase {
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public:
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AAudioServiceStreamMMAP(android::AAudioService &aAudioService,
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bool inService);
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virtual ~AAudioServiceStreamMMAP() = default;
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aaudio_result_t open(const aaudio::AAudioStreamRequest &request) override;
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aaudio_result_t startClient(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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aaudio_result_t stopClient(audio_port_handle_t clientHandle) override;
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const char *getTypeText() const override { return "MMAP"; }
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protected:
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/**
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* Stop the flow of data so that start() can resume without loss of data.
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*
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* This is not guaranteed to be synchronous but it currently is.
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* An AAUDIO_SERVICE_EVENT_PAUSED will be sent to the client when complete.
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*/
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aaudio_result_t pause_l() REQUIRES(mLock) override;
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aaudio_result_t stop_l() REQUIRES(mLock) override;
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aaudio_result_t standby_l() REQUIRES(mLock) override;
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aaudio_result_t exitStandby_l(AudioEndpointParcelable* parcelable) REQUIRES(mLock) override;
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aaudio_result_t getAudioDataDescription_l(
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AudioEndpointParcelable* parcelable) REQUIRES(mLock) override;
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aaudio_result_t getFreeRunningPosition_l(int64_t *positionFrames,
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int64_t *timeNanos) REQUIRES(mLock) override;
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aaudio_result_t getHardwareTimestamp_l(
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int64_t *positionFrames, int64_t *timeNanos) REQUIRES(mLock) override;
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/**
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* Device specific startup.
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* @return AAUDIO_OK or negative error.
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*/
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aaudio_result_t startDevice() override;
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private:
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bool mInService = false;
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};
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} // namespace aaudio
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#endif //AAUDIO_AAUDIO_SERVICE_STREAM_MMAP_H
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