renamed Reader => Stream

server/streamreader/pcmStream.cpp

@@ -0,0 +1,153 @@
+/***
+    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/>.
+***/
+
+#include <memory>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "../encoder/encoderFactory.h"
+#include "common/snapException.h"
+#include "common/compat.h"
+#include "pcmStream.h"
+#include "common/log.h"
+
+
+using namespace std;
+
+
+
+PcmStream::PcmStream(PcmListener* pcmListener, const StreamUri& uri) : pcmListener_(pcmListener), uri_(uri), pcmReadMs_(20), state_(kIdle)
+{
+	EncoderFactory encoderFactory;
+ 	if (uri_.query.find("codec") == uri_.query.end())
+		throw SnapException("Stream URI must have a codec");
+	encoder_.reset(encoderFactory.createEncoder(uri_.query["codec"]));
+
+	if (uri_.query.find("name") == uri_.query.end())
+		throw SnapException("Stream URI must have a name");
+	name_ = uri_.query["name"];
+
+ 	if (uri_.query.find("sampleformat") == uri_.query.end())
+		throw SnapException("Stream URI must have a sampleformat");
+	sampleFormat_ = SampleFormat(uri_.query["sampleformat"]);
+	logE << "PcmStream sampleFormat: " << sampleFormat_.getFormat() << "\n";
+
+ 	if (uri_.query.find("buffer_ms") != uri_.query.end())
+		pcmReadMs_ = cpt::stoul(uri_.query["buffer_ms"]);
+}
+
+
+PcmStream::~PcmStream()
+{
+	stop();
+}
+
+
+std::shared_ptr<msg::Header> PcmStream::getHeader()
+{
+	return encoder_->getHeader();
+}
+
+
+const StreamUri& PcmStream::getUri() const
+{
+	return uri_;
+}
+
+
+const std::string& PcmStream::getName() const
+{
+	return name_;
+}
+
+
+const SampleFormat& PcmStream::getSampleFormat() const
+{
+	return sampleFormat_;
+}
+
+
+void PcmStream::start()
+{
+	logE << "PcmStream start: " << sampleFormat_.getFormat() << "\n";
+//TODO: wrong encoder settings leads to: terminate called after throwing an instance of 'std::system_error'  what():  Invalid argument
+	encoder_->init(this, sampleFormat_);
+
+ 	active_ = true;
+	readerThread_ = thread(&PcmStream::worker, this);
+}
+
+
+void PcmStream::stop()
+{
+	if (active_)
+	{
+		active_ = false;
+		readerThread_.join();
+	}
+}
+
+
+ReaderState PcmStream::getState() const
+{
+	return state_;
+}
+
+
+void PcmStream::setState(const ReaderState& newState)
+{
+	if (newState != state_)
+	{
+		state_ = newState;
+		pcmListener_->onStateChanged(this, newState);
+	}
+}
+
+
+void PcmStream::onChunkEncoded(const Encoder* encoder, msg::PcmChunk* chunk, double duration)
+{
+//	logO << "onChunkEncoded: " << duration << " us\n";
+	if (duration <= 0)
+		return;
+
+	chunk->timestamp.sec = tvEncodedChunk_.tv_sec;
+	chunk->timestamp.usec = tvEncodedChunk_.tv_usec;
+	chronos::addUs(tvEncodedChunk_, duration * 1000);
+	pcmListener_->onChunkRead(this, chunk, duration);
+}
+
+
+json PcmStream::toJson() const
+{
+	string state("unknown");
+	if (state_ == kIdle)
+		state = "idle";
+	else if (state_ == kPlaying)
+		state = "playing";
+	else if (state_ == kDisabled)
+		state = "disabled";
+
+	json j = {
+		{"uri", uri_.toJson()},
+		{"id", uri_.id()},
+		{"status", state}
+	};
+	return j;
+}
+