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82 lines
3 KiB
C++
82 lines
3 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2021 Johannes Pohl
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef META_STREAM_HPP
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#define META_STREAM_HPP
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#include "posix_stream.hpp"
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#include "resampler.hpp"
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#include <memory>
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namespace streamreader
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{
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/// Reads and decodes PCM data
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/**
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* Reads PCM and passes the data to an encoder.
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* Implements EncoderListener to get the encoded data.
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* Data is passed to the PcmListener
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*/
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class MetaStream : public PcmStream, public PcmListener
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{
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public:
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/// ctor. Encoded PCM data is passed to the PcmListener
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MetaStream(PcmListener* pcmListener, const std::vector<std::shared_ptr<PcmStream>>& streams, boost::asio::io_context& ioc,
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const ServerSettings& server_settings, const StreamUri& uri);
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virtual ~MetaStream();
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void start() override;
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void stop() override;
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// Setter for properties
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void setShuffle(bool shuffle, ResultHandler handler) override;
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void setLoopStatus(LoopStatus status, ResultHandler handler) override;
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void setVolume(uint16_t volume, ResultHandler handler) override;
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void setRate(float rate, ResultHandler handler) override;
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// Control commands
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void setPosition(std::chrono::milliseconds position, ResultHandler handler) override;
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void seek(std::chrono::milliseconds offset, ResultHandler handler) override;
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void next(ResultHandler handler) override;
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void previous(ResultHandler handler) override;
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void pause(ResultHandler handler) override;
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void playPause(ResultHandler handler) override;
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void stop(ResultHandler handler) override;
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void play(ResultHandler handler) override;
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protected:
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/// Implementation of PcmListener
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void onPropertiesChanged(const PcmStream* pcmStream, const Properties& properties) override;
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void onStateChanged(const PcmStream* pcmStream, ReaderState state) override;
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void onChunkRead(const PcmStream* pcmStream, const msg::PcmChunk& chunk) override;
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void onChunkEncoded(const PcmStream* pcmStream, std::shared_ptr<msg::PcmChunk> chunk, double duration) override;
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void onResync(const PcmStream* pcmStream, double ms) override;
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protected:
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std::vector<std::shared_ptr<PcmStream>> streams_;
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std::shared_ptr<PcmStream> active_stream_;
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std::recursive_mutex mutex_;
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std::unique_ptr<Resampler> resampler_;
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bool first_read_;
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std::chrono::time_point<std::chrono::steady_clock> next_tick_;
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};
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} // namespace streamreader
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#endif
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