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86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2020 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 PULSE_PLAYER_HPP
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#define PULSE_PLAYER_HPP
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#include "player.hpp"
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#include <atomic>
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#include <cstdio>
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#include <memory>
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#include <optional>
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#include <pulse/pulseaudio.h>
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namespace player
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{
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static constexpr auto PULSE = "pulse";
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/// File Player
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/// Used for testing and doesn't even write the received audio to file at the moment,
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/// but just discards it
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class PulsePlayer : public Player
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{
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public:
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PulsePlayer(boost::asio::io_context& io_context, const ClientSettings::Player& settings, std::shared_ptr<Stream> stream);
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virtual ~PulsePlayer();
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void start() override;
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void stop() override;
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/// List the system's audio output devices
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static std::vector<PcmDevice> pcm_list(const std::string& parameter);
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protected:
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bool needsThread() const override;
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void worker() override;
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bool getHardwareVolume(double& volume, bool& muted) override;
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void setHardwareVolume(double volume, bool muted) override;
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void triggerVolumeUpdate();
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void underflowCallback(pa_stream* stream);
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void stateCallback(pa_context* ctx);
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void writeCallback(pa_stream* stream, size_t nbytes);
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void subscribeCallback(pa_context* ctx, pa_subscription_event_type_t event_type, uint32_t idx);
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std::vector<char> buffer_;
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std::chrono::microseconds latency_;
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int underflows_ = 0;
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std::atomic<int> pa_ready_;
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pa_buffer_attr bufattr_;
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pa_sample_spec pa_ss_;
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pa_mainloop* pa_ml_;
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pa_context* pa_ctx_;
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pa_stream* playstream_;
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pa_proplist* proplist_;
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std::optional<std::string> server_;
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std::map<std::string, std::string> properties_;
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// cache of the last volume change
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std::chrono::time_point<std::chrono::steady_clock> last_change_;
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};
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} // namespace player
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#endif
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