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80 lines
2.5 KiB
80 lines
2.5 KiB
/*
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* Copyright (C) 2020 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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#pragma once
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#include <memory>
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#include <mutex>
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#include <thread>
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#include <vector>
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#include "host/frontend/webrtc/lib/audio_sink.h"
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#include "host/frontend/webrtc/lib/audio_source.h"
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#include "host/libs/audio_connector/server.h"
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namespace cuttlefish {
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class AudioHandler : public AudioServerExecutor {
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// TODO(jemoreira): This can probably be avoided if playback goes through the
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// audio device instead.
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struct HoldingBuffer {
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std::vector<uint8_t> buffer;
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size_t count;
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void Reset(size_t size);
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size_t Add(const volatile uint8_t* data, size_t max_len);
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bool empty() const;
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bool full() const;
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uint8_t* data();
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};
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struct StreamDesc {
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std::mutex mtx;
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int bits_per_sample = -1;
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int sample_rate = -1;
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int channels = -1;
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bool active = false;
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HoldingBuffer buffer;
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};
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public:
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AudioHandler(std::unique_ptr<AudioServer> audio_server,
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std::shared_ptr<webrtc_streaming::AudioSink> audio_sink,
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std::shared_ptr<webrtc_streaming::AudioSource> audio_source);
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~AudioHandler() override = default;
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void Start();
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// AudioServerExecutor implementation
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void StreamsInfo(StreamInfoCommand& cmd) override;
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void SetStreamParameters(StreamSetParamsCommand& cmd) override;
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void PrepareStream(StreamControlCommand& cmd) override;
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void ReleaseStream(StreamControlCommand& cmd) override;
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void StartStream(StreamControlCommand& cmd) override;
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void StopStream(StreamControlCommand& cmd) override;
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void OnPlaybackBuffer(TxBuffer buffer) override;
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void OnCaptureBuffer(RxBuffer buffer) override;
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private:
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[[noreturn]] void Loop();
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std::shared_ptr<webrtc_streaming::AudioSink> audio_sink_;
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std::unique_ptr<AudioServer> audio_server_;
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std::thread server_thread_;
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std::vector<StreamDesc> stream_descs_ = {};
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std::shared_ptr<webrtc_streaming::AudioSource> audio_source_;
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};
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} // namespace cuttlefish
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