mirror of
https://github.com/badaix/snapcast.git
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170 lines
3.7 KiB
C++
170 lines
3.7 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2016 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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#include <memory>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "encoder/encoderFactory.h"
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#include "common/snapException.h"
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#include "common/strCompat.h"
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#include "pcmStream.h"
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#include "common/log.h"
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using namespace std;
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PcmStream::PcmStream(PcmListener* pcmListener, const StreamUri& uri) :
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active_(false), pcmListener_(pcmListener), uri_(uri), pcmReadMs_(20), state_(kIdle)
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{
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EncoderFactory encoderFactory;
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if (uri_.query.find("codec") == uri_.query.end())
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throw SnapException("Stream URI must have a codec");
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encoder_.reset(encoderFactory.createEncoder(uri_.query["codec"]));
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if (uri_.query.find("name") == uri_.query.end())
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throw SnapException("Stream URI must have a name");
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name_ = uri_.query["name"];
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if (uri_.query.find("sampleformat") == uri_.query.end())
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throw SnapException("Stream URI must have a sampleformat");
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sampleFormat_ = SampleFormat(uri_.query["sampleformat"]);
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logO << "PcmStream sampleFormat: " << sampleFormat_.getFormat() << "\n";
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if (uri_.query.find("buffer_ms") != uri_.query.end())
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pcmReadMs_ = cpt::stoul(uri_.query["buffer_ms"]);
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}
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PcmStream::~PcmStream()
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{
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stop();
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}
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std::shared_ptr<msg::CodecHeader> PcmStream::getHeader()
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{
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return encoder_->getHeader();
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}
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const StreamUri& PcmStream::getUri() const
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{
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return uri_;
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}
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const std::string& PcmStream::getName() const
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{
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return name_;
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}
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const std::string& PcmStream::getId() const
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{
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return getName();
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}
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const SampleFormat& PcmStream::getSampleFormat() const
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{
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return sampleFormat_;
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}
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void PcmStream::start()
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{
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logD << "PcmStream start: " << sampleFormat_.getFormat() << "\n";
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encoder_->init(this, sampleFormat_);
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active_ = true;
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thread_ = thread(&PcmStream::worker, this);
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}
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void PcmStream::stop()
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{
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if (!active_ && !thread_.joinable())
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return;
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active_ = false;
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cv_.notify_one();
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if (thread_.joinable())
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thread_.join();
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}
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bool PcmStream::sleep(int32_t ms)
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{
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if (ms < 0)
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return true;
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std::unique_lock<std::mutex> lck(mtx_);
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return (!cv_.wait_for(lck, std::chrono::milliseconds(ms), [this] { return !active_; }));
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}
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ReaderState PcmStream::getState() const
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{
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return state_;
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}
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void PcmStream::setState(const ReaderState& newState)
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{
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if (newState != state_)
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{
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state_ = newState;
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if (pcmListener_)
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pcmListener_->onStateChanged(this, newState);
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}
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}
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void PcmStream::onChunkEncoded(const Encoder* encoder, msg::PcmChunk* chunk, double duration)
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{
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// logO << "onChunkEncoded: " << duration << " us\n";
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if (duration <= 0)
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return;
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chunk->timestamp.sec = tvEncodedChunk_.tv_sec;
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chunk->timestamp.usec = tvEncodedChunk_.tv_usec;
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chronos::addUs(tvEncodedChunk_, duration * 1000);
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if (pcmListener_)
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pcmListener_->onChunkRead(this, chunk, duration);
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}
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json PcmStream::toJson() const
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{
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string state("unknown");
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if (state_ == kIdle)
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state = "idle";
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else if (state_ == kPlaying)
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state = "playing";
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else if (state_ == kDisabled)
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state = "disabled";
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json j = {
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{"uri", uri_.toJson()},
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{"id", getId()},
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{"status", state}
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};
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return j;
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}
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