snapcast/client/controller.h
2018-02-19 20:04:28 +01:00

89 lines
2.8 KiB
C++

/***
This file is part of snapcast
Copyright (C) 2014-2018 Johannes Pohl
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#ifndef CONTROLLER_H
#define CONTROLLER_H
#include <thread>
#include <atomic>
#include "decoder/decoder.h"
#include "message/message.h"
#include "message/serverSettings.h"
#include "message/streamTags.h"
#include "player/pcmDevice.h"
#ifdef HAS_ALSA
#include "player/alsaPlayer.h"
#elif HAS_OPENSL
#include "player/openslPlayer.h"
#elif HAS_COREAUDIO
#include "player/coreAudioPlayer.h"
#endif
#include "clientConnection.h"
#include "stream.h"
#include "metadata.h"
/// Forwards PCM data to the audio player
/**
* Sets up a connection to the server (using ClientConnection)
* Sets up the audio decoder and player.
* Decodes audio (message_type::kWireChunk) and feeds PCM to the audio stream buffer
* Does timesync with the server
*/
class Controller : public MessageReceiver
{
public:
Controller(const std::string& clientId, size_t instance, std::shared_ptr<MetadataAdapter> meta);
void start(const PcmDevice& pcmDevice, const std::string& host, size_t port, int latency);
void stop();
/// Implementation of MessageReceiver.
/// ClientConnection passes messages from the server through these callbacks
virtual void onMessageReceived(ClientConnection* connection, const msg::BaseMessage& baseMessage, char* buffer);
/// Implementation of MessageReceiver.
/// Used for async exception reporting
virtual void onException(ClientConnection* connection, shared_exception_ptr exception);
private:
void worker();
bool sendTimeSyncMessage(long after = 1000);
std::string hostId_;
std::string meta_callback_;
size_t instance_;
std::atomic<bool> active_;
std::thread controllerThread_;
SampleFormat sampleFormat_;
PcmDevice pcmDevice_;
int latency_;
std::unique_ptr<ClientConnection> clientConnection_;
std::shared_ptr<Stream> stream_;
std::unique_ptr<Decoder> decoder_;
std::unique_ptr<Player> player_;
std::shared_ptr<MetadataAdapter> meta_;
std::shared_ptr<msg::ServerSettings> serverSettings_;
std::shared_ptr<msg::StreamTags> streamTags_;
std::shared_ptr<msg::CodecHeader> headerChunk_;
std::mutex receiveMutex_;
shared_exception_ptr async_exception_;
};
#endif