renamed Reader => Stream

server/streamreader/pcmStream.h

@@ -0,0 +1,102 @@
+/***
+    This file is part of snapcast
+    Copyright (C) 2014-2016  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 PCM_READER_H
+#define PCM_READER_H
+
+#include <thread>
+#include <atomic>
+#include <string>
+#include <map>
+#include "streamUri.h"
+#include "../encoder/encoder.h"
+#include "../json/json.hpp"
+#include "message/sampleFormat.h"
+#include "message/header.h"
+
+
+class PcmStream;
+
+enum ReaderState
+{
+	kUnknown = 0,
+	kIdle = 1,
+	kPlaying = 2,
+	kDisabled = 3
+};
+
+
+/// Callback interface for users of PcmStream
+/**
+ * Users of PcmStream should implement this to get the data
+ */
+class PcmListener
+{
+public:
+	virtual void onStateChanged(const PcmStream* pcmStream, const ReaderState& state) = 0;
+	virtual void onChunkRead(const PcmStream* pcmStream, const msg::PcmChunk* chunk, double duration) = 0;
+	virtual void onResync(const PcmStream* pcmStream, double ms) = 0;
+};
+
+
+/// Reads and decodes PCM data
+/**
+ * Reads PCM and passes the data to an encoder.
+ * Implements EncoderListener to get the encoded data.
+ * Data is passed to the PcmListener
+ */
+class PcmStream : public EncoderListener
+{
+public:
+	/// ctor. Encoded PCM data is passed to the PcmListener
+	PcmStream(PcmListener* pcmListener, const StreamUri& uri);
+	virtual ~PcmStream();
+
+	virtual void start();
+	virtual void stop();
+
+	/// Implementation of EncoderListener::onChunkEncoded
+	virtual void onChunkEncoded(const Encoder* encoder, msg::PcmChunk* chunk, double duration);
+	virtual std::shared_ptr<msg::Header> getHeader();
+
+	virtual const StreamUri& getUri() const;
+	virtual const std::string& getName() const;
+	virtual const SampleFormat& getSampleFormat() const;
+
+	virtual ReaderState getState() const;
+	virtual json toJson() const;
+
+
+protected:
+	virtual void worker() = 0;
+	void setState(const ReaderState& newState);
+
+	timeval tvEncodedChunk_;
+	std::atomic<bool> active_;
+	std::thread readerThread_;
+	PcmListener* pcmListener_;
+	StreamUri uri_;
+	SampleFormat sampleFormat_;
+	size_t pcmReadMs_;
+	std::unique_ptr<Encoder> encoder_;
+	std::string name_;
+	ReaderState state_;
+};
+
+
+#endif