65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
// Copyright (C) 2021 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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#pragma once
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#include <inttypes.h>
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#include "AidlTypes.h"
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namespace audio_proxy::service {
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// Interface for audio playback. It has similar APIs to the AIDL IOutputStream.
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class BusOutputStream {
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public:
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BusOutputStream(const std::string& address, const AidlAudioConfig& config,
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int32_t flags);
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virtual ~BusOutputStream();
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const std::string& getAddress() const;
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const AidlAudioConfig& getConfig() const;
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int32_t getFlags() const;
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int getFrameSize() const;
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bool prepareForWriting(uint32_t frameSize, uint32_t frameCount);
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uint32_t getWritingFrameSize() const;
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uint32_t getWritingFrameCount() const;
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virtual bool standby() = 0;
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virtual bool pause() = 0;
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virtual bool resume() = 0;
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virtual bool drain(AidlAudioDrain drain) = 0;
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virtual bool flush() = 0;
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virtual bool close() = 0;
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virtual bool setVolume(float left, float right) = 0;
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virtual size_t availableToWrite() = 0;
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virtual AidlWriteStatus writeRingBuffer(const uint8_t* firstMem,
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size_t firstLength,
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const uint8_t* secondMem,
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size_t secondLength) = 0;
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protected:
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virtual bool prepareForWritingImpl(uint32_t frameSize,
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uint32_t frameCount) = 0;
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const std::string mAddress;
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const AidlAudioConfig mConfig;
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const int32_t mFlags;
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uint32_t mWritingFrameSize = 0;
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uint32_t mWritingFrameCount = 0;
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};
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} // namespace audio_proxy::service
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