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117 lines
3.9 KiB
117 lines
3.9 KiB
/*
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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_SERVICE_ENDPOINT_MMAP_H
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#define AAUDIO_SERVICE_ENDPOINT_MMAP_H
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#include <atomic>
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#include <functional>
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#include <mutex>
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#include <vector>
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#include "client/AudioStreamInternal.h"
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#include "client/AudioStreamInternalPlay.h"
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#include "binding/AAudioServiceMessage.h"
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#include "AAudioServiceEndpointShared.h"
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#include "AAudioServiceStreamShared.h"
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#include "AAudioServiceStreamMMAP.h"
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#include "AAudioMixer.h"
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#include "AAudioService.h"
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namespace aaudio {
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/**
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* This is used by AAudioServiceStreamMMAP to access the MMAP devices
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* through AudioFlinger.
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*/
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class AAudioServiceEndpointMMAP
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: public AAudioServiceEndpoint
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, public android::MmapStreamCallback {
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public:
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explicit AAudioServiceEndpointMMAP(android::AAudioService &audioService);
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virtual ~AAudioServiceEndpointMMAP() = default;
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std::string dump() const override;
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aaudio_result_t open(const aaudio::AAudioStreamRequest &request) override;
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void close() override;
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aaudio_result_t startStream(android::sp<AAudioServiceStreamBase> stream,
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audio_port_handle_t *clientHandle) override;
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aaudio_result_t stopStream(android::sp<AAudioServiceStreamBase> stream,
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audio_port_handle_t clientHandle) 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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aaudio_result_t getFreeRunningPosition(int64_t *positionFrames, int64_t *timeNanos) override;
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aaudio_result_t getTimestamp(int64_t *positionFrames, int64_t *timeNanos) override;
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void handleTearDownAsync(audio_port_handle_t portHandle);
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// -------------- Callback functions for MmapStreamCallback ---------------------
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void onTearDown(audio_port_handle_t portHandle) override;
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void onVolumeChanged(audio_channel_mask_t channels,
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android::Vector<float> values) override;
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void onRoutingChanged(audio_port_handle_t portHandle) override;
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// ------------------------------------------------------------------------------
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aaudio_result_t getDownDataDescription(AudioEndpointParcelable &parcelable);
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int64_t getHardwareTimeOffsetNanos() const {
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return mHardwareTimeOffsetNanos;
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}
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aaudio_result_t getExternalPosition(uint64_t *positionFrames, int64_t *timeNanos);
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private:
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aaudio_result_t openWithFormat(audio_format_t audioFormat);
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MonotonicCounter mFramesTransferred;
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// Interface to the AudioFlinger MMAP support.
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android::sp<android::MmapStreamInterface> mMmapStream;
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struct audio_mmap_buffer_info mMmapBufferinfo;
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// There is only one port associated with an MMAP endpoint.
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audio_port_handle_t mPortHandle = AUDIO_PORT_HANDLE_NONE;
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android::AAudioService &mAAudioService;
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android::base::unique_fd mAudioDataFileDescriptor;
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int64_t mHardwareTimeOffsetNanos = 0; // TODO get from HAL
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bool mExternalPositionSupported = true;
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};
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} /* namespace aaudio */
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#endif //AAUDIO_SERVICE_ENDPOINT_MMAP_H
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