mirror of
https://github.com/badaix/snapcast.git
synced 2025-05-01 11:17:36 +02:00
504 lines
19 KiB
C++
504 lines
19 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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#include "stream.hpp"
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#include "common/aixlog.hpp"
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#include "time_provider.hpp"
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#include <cmath>
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#include <iostream>
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#include <string.h>
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using namespace std;
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// using namespace chronos;
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namespace cs = chronos;
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Stream::Stream(const SampleFormat& sampleFormat)
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: format_(sampleFormat), sleep_(0), median_(0), shortMedian_(0), lastUpdate_(0), playedFrames_(0), bufferMs_(cs::msec(500))
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{
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buffer_.setSize(500);
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shortBuffer_.setSize(100);
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miniBuffer_.setSize(20);
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// cardBuffer_.setSize(50);
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// input_rate_ = format_.rate;
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// format_.rate = 48000;
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// output_rate_ = static_cast<double>(format_.rate);
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/*
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48000 x
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------- = -----
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47999,2 x - 1
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x = 1,000016667 / (1,000016667 - 1)
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*/
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setRealSampleRate(format_.rate);
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// soxr_error_t error;
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// soxr_io_spec_t iospec = soxr_io_spec(SOXR_INT16_I, SOXR_INT16_I);
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// soxr_quality_spec_t q_spec = soxr_quality_spec(SOXR_HQ, 0);
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// soxr_ = soxr_create(static_cast<double>(input_rate_), static_cast<double>(format_.rate), format_.channels, &error, &iospec, &q_spec, NULL);
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// if (error)
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// {
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// LOG(ERROR) << "Error soxr_create: " << error << "\n";
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// }
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}
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void Stream::setRealSampleRate(double sampleRate)
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{
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if (sampleRate == format_.rate)
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correctAfterXFrames_ = 0;
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else
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correctAfterXFrames_ = round((format_.rate / sampleRate) / (format_.rate / sampleRate - 1.));
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// LOG(DEBUG) << "Correct after X: " << correctAfterXFrames_ << " (Real rate: " << sampleRate << ", rate: " << format_.rate << ")\n";
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}
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void Stream::setBufferLen(size_t bufferLenMs)
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{
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bufferMs_ = cs::msec(bufferLenMs);
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}
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void Stream::clearChunks()
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{
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while (chunks_.size() > 0)
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chunks_.pop();
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resetBuffers();
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}
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void Stream::addChunk(msg::PcmChunk* chunk)
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{
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while (chunks_.size() * chunk->duration<cs::msec>().count() > 10000)
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chunks_.pop();
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chunks_.push(shared_ptr<msg::PcmChunk>(chunk));
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// LOG(DEBUG) << "new chunk: " << chunk->duration<cs::msec>().count() << ", Chunks: " << chunks_.size() << "\n";
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// if (std::abs(input_rate_ - output_rate_) <= 0.0000001)
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// {
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// chunks_.push(shared_ptr<msg::PcmChunk>(chunk));
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// }
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// else
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// {
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// size_t idone;
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// size_t odone;
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// auto out = new msg::PcmChunk(format_, 0);
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// out->timestamp = chunk->timestamp;
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// out->payloadSize = ceil(chunk->payloadSize * static_cast<double>(output_rate_) / static_cast<double>(input_rate_));
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// out->payload = (char*)malloc(out->payloadSize);
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// soxr_io_spec_t iospec = soxr_io_spec(SOXR_INT16_I, SOXR_INT16_I);
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// soxr_quality_spec_t q_spec = soxr_quality_spec(SOXR_HQ, 0);
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// // auto error = soxr_oneshot(static_cast<double>(input_rate_), output_rate_, format_.channels, chunk->payload, chunk->getFrameCount(), &idone,
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// // out->payload, out->payloadSize, &odone, &iospec, &q_spec, nullptr);
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// auto error = soxr_process(soxr_, chunk->payload, chunk->getFrameCount(), &idone, out->payload, out->getFrameCount(), &odone);
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// if (error)
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// {
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// LOG(ERROR) << "Error soxr_process: " << error << "\n";
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// delete out;
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// }
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// else
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// {
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// out->payloadSize = odone * out->format.frameSize;
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// LOG(TRACE) << "Resample idone: " << idone << "/" << chunk->getFrameCount() << ", odone: " << odone << "/"
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// << out->payloadSize / out->format.frameSize << "\n";
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// chunks_.push(shared_ptr<msg::PcmChunk>(out));
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// }
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// delete chunk;
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// }
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}
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bool Stream::waitForChunk(size_t ms) const
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{
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return chunks_.wait_for(std::chrono::milliseconds(ms));
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}
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cs::time_point_clk Stream::getSilentPlayerChunk(void* outputBuffer, unsigned long framesPerBuffer)
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{
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if (!chunk_)
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chunk_ = chunks_.pop();
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cs::time_point_clk tp = chunk_->start();
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memset(outputBuffer, 0, framesPerBuffer * format_.frameSize);
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return tp;
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}
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/*
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time_point_ms Stream::seekTo(const time_point_ms& to)
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{
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if (!chunk)
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chunk_ = chunks_.pop();
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// time_point_ms tp = chunk_->timePoint();
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while (to > chunk_->timePoint())// + std::chrono::milliseconds((long int)chunk_->getDuration()))//
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{
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chunk_ = chunks_.pop();
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LOG(DEBUG) << "\nto: " << Chunk::getAge(to) << "\t chunk: " << Chunk::getAge(chunk_->timePoint()) << "\n";
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LOG(DEBUG) << "diff: " << std::chrono::duration_cast<std::chrono::milliseconds>((to - chunk_->timePoint())).count() << "\n";
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}
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chunk_->seek(std::chrono::duration_cast<std::chrono::milliseconds>(to - chunk_->timePoint()).count() * format_.msRate());
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return chunk_->timePoint();
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}
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*/
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/*
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time_point_clk Stream::seek(long ms)
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{
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if (!chunk)
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chunk_ = chunks_.pop();
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if (ms <= 0)
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return chunk_->start();
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// time_point_ms tp = chunk_->timePoint();
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while (ms > chunk_->duration<cs::msec>().count())
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{
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chunk_ = chunks_.pop();
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ms -= min(ms, (long)chunk_->durationLeft<cs::msec>().count());
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}
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chunk_->seek(ms * format_.msRate());
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return chunk_->start();
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}
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*/
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cs::time_point_clk Stream::getNextPlayerChunk(void* outputBuffer, const cs::usec& timeout, unsigned long framesPerBuffer)
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{
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if (!chunk_ && !chunks_.try_pop(chunk_, timeout))
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throw 0;
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cs::time_point_clk tp = chunk_->start();
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char* buffer = (char*)outputBuffer;
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unsigned long read = 0;
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while (read < framesPerBuffer)
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{
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read += chunk_->readFrames(buffer + read * format_.frameSize, framesPerBuffer - read);
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if (chunk_->isEndOfChunk() && !chunks_.try_pop(chunk_, timeout))
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throw 0;
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}
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return tp;
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}
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cs::time_point_clk Stream::getNextPlayerChunk(void* outputBuffer, const cs::usec& timeout, unsigned long framesPerBuffer, long framesCorrection)
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{
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if (framesCorrection == 0)
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return getNextPlayerChunk(outputBuffer, timeout, framesPerBuffer);
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long toRead = framesPerBuffer + framesCorrection;
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char* buffer = (char*)malloc(toRead * format_.frameSize);
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cs::time_point_clk tp = getNextPlayerChunk(buffer, timeout, toRead);
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// if (abs(framesCorrection) > 0)
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// LOG(DEBUG) << "getNextPlayerChunk, frames: " << framesPerBuffer << ", correction: " << framesCorrection << " (" << toRead << ")\n";
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size_t slices = (abs(framesCorrection) + 1);
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size_t pos = 0;
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int idx = 0;
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if (framesCorrection < 0)
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{
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int size = framesPerBuffer / slices;
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// LOG(TRACE) << "getNextPlayerChunk, frames: " << framesPerBuffer << ", correction: " << framesCorrection << " (" << toRead << "), slices: " << slices
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// << "\n";
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for (size_t n = 0; n < slices; ++n)
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{
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if (n + 1 == slices)
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size = framesPerBuffer - pos;
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// LOG(TRACE) << "slice: " << n << ", size: " << size << ", out pos: " << pos << ", source pos: " << pos + idx << "\n";
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memcpy((char*)outputBuffer + pos * format_.frameSize, buffer + (pos + idx) * format_.frameSize, size * format_.frameSize);
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pos += size;
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idx -= 1;
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}
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}
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else
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{
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int size = toRead / slices;
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// LOG(TRACE) << "getNextPlayerChunk, frames: " << framesPerBuffer << ", correction: " << framesCorrection << " (" << toRead << "), slices: " << slices
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// << "\n";
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for (size_t n = 0; n < slices; ++n)
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{
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if (n + 1 == slices)
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size = toRead - pos;
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// LOG(TRACE) << "slice: " << n << ", size: " << size << ", out pos: " << pos + idx << ", source pos: " << pos << "\n";
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memcpy((char*)outputBuffer + (pos + idx) * format_.frameSize, buffer + pos * format_.frameSize, size * format_.frameSize);
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pos += size;
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idx -= 1;
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}
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}
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// float idx = 0;
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// for (size_t n = 0; n < framesPerBuffer; ++n)
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// {
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// size_t index(floor(idx)); // = (int)(ceil(n*factor));
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// memcpy((char*)outputBuffer + n * format_.frameSize, buffer + index * format_.frameSize, format_.frameSize);
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// idx += factor;
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// }
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free(buffer);
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return tp;
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}
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/*
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2020-01-12 20-25-26 [Info] Chunk: 7 7 11 15 179 120
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2020-01-12 20-25-27 [Info] Chunk: 6 6 8 15 212 122
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2020-01-12 20-25-28 [Info] Chunk: 6 6 7 12 245 123
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2020-01-12 20-25-29 [Info] Chunk: 5 6 6 9 279 117
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2020-01-12 20-25-30 [Info] Chunk: 4 5 6 8 312 117
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2020-01-12 20-25-30 [Error] Controller::onException: read_some: End of file
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2020-01-12 20-25-30 [Error] Exception in Controller::worker(): read_some: End of file
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2020-01-12 20-25-31 [Error] Exception in Controller::worker(): connect: Connection refused
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2020-01-12 20-25-31 [Error] Error in socket shutdown: Transport endpoint is not connected
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2020-01-12 20-25-32 [Error] Exception in Controller::worker(): connect: Connection refused
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2020-01-12 20-25-32 [Error] Error in socket shutdown: Transport endpoint is not connected
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^C2020-01-12 20-25-32 [Info] Received signal 2: Interrupt
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2020-01-12 20-25-32 [Info] Stopping controller
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2020-01-12 20-25-32 [Error] Error in socket shutdown: Bad file descriptor
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2020-01-12 20-25-32 [Error] Exception: Invalid argument
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2020-01-12 20-25-32 [Notice] daemon terminated.
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=================================================================
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==22383==ERROR: LeakSanitizer: detected memory leaks
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Direct leak of 5756 byte(s) in 1 object(s) allocated from:
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#0 0x7f3d60635602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
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#1 0x448fc2 in Stream::getNextPlayerChunk(void*, std::chrono::duration<long, std::ratio<1l, 1000000l> > const&, unsigned long, long)
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/home/johannes/Develop/snapcast/client/stream.cpp:163
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SUMMARY: AddressSanitizer: 5756 byte(s) leaked in 1 allocation(s).
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*/
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void Stream::updateBuffers(int age)
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{
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buffer_.add(age);
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miniBuffer_.add(age);
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shortBuffer_.add(age);
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}
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void Stream::resetBuffers()
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{
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buffer_.clear();
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miniBuffer_.clear();
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shortBuffer_.clear();
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}
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bool Stream::getPlayerChunk(void* outputBuffer, const cs::usec& outputBufferDacTime, unsigned long framesPerBuffer)
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{
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if (outputBufferDacTime > bufferMs_)
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{
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LOG(INFO) << "outputBufferDacTime > bufferMs: " << cs::duration<cs::msec>(outputBufferDacTime) << " > " << cs::duration<cs::msec>(bufferMs_) << "\n";
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sleep_ = cs::usec(0);
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return false;
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}
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if (!chunk_ && !chunks_.try_pop(chunk_, outputBufferDacTime))
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{
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// LOG(INFO) << "no chunks available\n";
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sleep_ = cs::usec(0);
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return false;
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}
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playedFrames_ += framesPerBuffer;
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/// we have a chunk
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/// age = chunk age (server now - rec time: some positive value) - buffer (e.g. 1000ms) + time to DAC
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/// age = 0 => play now
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/// age < 0 => play in -age
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/// age > 0 => too old
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cs::usec age = std::chrono::duration_cast<cs::usec>(TimeProvider::serverNow() - chunk_->start()) - bufferMs_ + outputBufferDacTime;
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// LOG(INFO) << "age: " << age.count() / 1000 << "\n";
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if ((sleep_.count() == 0) && (cs::abs(age) > cs::msec(200)))
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{
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LOG(INFO) << "age > 200: " << cs::duration<cs::msec>(age) << "\n";
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sleep_ = age;
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}
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try
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{
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// LOG(DEBUG) << "framesPerBuffer: " << framesPerBuffer << "\tms: " << framesPerBuffer*2 / PLAYER_CHUNK_MS_SIZE << "\t" << PLAYER_CHUNK_SIZE << "\n";
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cs::nsec bufferDuration = cs::nsec(static_cast<cs::nsec::rep>(framesPerBuffer / format_.nsRate()));
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// LOG(DEBUG) << "buffer duration: " << bufferDuration.count() << "\n";
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cs::usec correction = cs::usec(0);
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if (sleep_.count() != 0)
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{
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resetBuffers();
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if (sleep_ < -bufferDuration / 2)
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{
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LOG(INFO) << "sleep < -bufferDuration/2: " << cs::duration<cs::msec>(sleep_) << " < " << -cs::duration<cs::msec>(bufferDuration) / 2 << ", ";
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// We're early: not enough chunks_. play silence. Reference chunk_ is the oldest (front) one
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sleep_ = chrono::duration_cast<cs::usec>(TimeProvider::serverNow() - getSilentPlayerChunk(outputBuffer, framesPerBuffer) - bufferMs_ +
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outputBufferDacTime);
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LOG(INFO) << "sleep: " << cs::duration<cs::msec>(sleep_) << "\n";
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if (sleep_ < -bufferDuration / 2)
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return true;
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}
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else if (sleep_ > bufferDuration / 2)
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{
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LOG(INFO) << "sleep > bufferDuration/2: " << cs::duration<cs::msec>(sleep_) << " > " << cs::duration<cs::msec>(bufferDuration) / 2 << "\n";
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// We're late: discard oldest chunks
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while (sleep_ > chunk_->duration<cs::usec>())
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{
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LOG(INFO) << "sleep > chunkDuration: " << cs::duration<cs::msec>(sleep_) << " > " << chunk_->duration<cs::msec>().count()
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<< ", chunks: " << chunks_.size() << ", out: " << cs::duration<cs::msec>(outputBufferDacTime)
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<< ", needed: " << cs::duration<cs::msec>(bufferDuration) << "\n";
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sleep_ = std::chrono::duration_cast<cs::usec>(TimeProvider::serverNow() - chunk_->start() - bufferMs_ + outputBufferDacTime);
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if (!chunks_.try_pop(chunk_, outputBufferDacTime))
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{
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LOG(INFO) << "no chunks available\n";
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chunk_ = nullptr;
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sleep_ = cs::usec(0);
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return false;
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}
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}
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}
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// out of sync, can be corrected by playing faster/slower
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if (sleep_ < -cs::usec(100))
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{
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sleep_ += cs::usec(100);
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correction = -cs::usec(100);
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}
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else if (sleep_ > cs::usec(100))
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{
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sleep_ -= cs::usec(100);
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correction = cs::usec(100);
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}
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else
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{
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LOG(INFO) << "Sleep " << cs::duration<cs::msec>(sleep_) << "\n";
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correction = sleep_;
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sleep_ = cs::usec(0);
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}
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}
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// framesCorrection = number of frames to be read more or less to get in-sync
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long framesCorrection = correction.count() * format_.usRate();
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// sample rate correction
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if ((correctAfterXFrames_ != 0) && (playedFrames_ >= (unsigned long)abs(correctAfterXFrames_)))
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{
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framesCorrection += (correctAfterXFrames_ > 0) ? 1 : -1;
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playedFrames_ = 0; //-= abs(correctAfterXFrames_);
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}
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age = std::chrono::duration_cast<cs::usec>(TimeProvider::serverNow() -
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getNextPlayerChunk(outputBuffer, outputBufferDacTime, framesPerBuffer, framesCorrection) - bufferMs_ +
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outputBufferDacTime);
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setRealSampleRate(format_.rate);
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if (sleep_.count() == 0)
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{
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if (buffer_.full())
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{
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if (cs::usec(abs(median_)) > cs::msec(2))
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{
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LOG(INFO) << "pBuffer->full() && (abs(median_) > 2): " << median_ << "\n";
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sleep_ = cs::usec(median_);
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}
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// else if (cs::usec(median_) > cs::usec(300))
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// {
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// setRealSampleRate(format_.rate - format_.rate / 1000);
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// }
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// else if (cs::usec(median_) < -cs::usec(300))
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// {
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// setRealSampleRate(format_.rate + format_.rate / 1000);
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// }
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}
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else if (shortBuffer_.full())
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{
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if (cs::usec(abs(shortMedian_)) > cs::msec(5))
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{
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LOG(INFO) << "pShortBuffer->full() && (abs(shortMedian_) > 5): " << shortMedian_ << "\n";
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sleep_ = cs::usec(shortMedian_);
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}
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// else
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// {
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// setRealSampleRate(format_.rate + -shortMedian_ / 100);
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// }
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}
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else if (miniBuffer_.full() && (cs::usec(abs(miniBuffer_.median())) > cs::msec(50)))
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{
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LOG(INFO) << "pMiniBuffer->full() && (abs(pMiniBuffer->mean()) > 50): " << miniBuffer_.median() << "\n";
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sleep_ = cs::usec(static_cast<cs::msec::rep>(miniBuffer_.mean()));
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}
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}
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if (sleep_.count() != 0)
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{
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static int lastAge(0);
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int msAge = cs::duration<cs::msec>(age);
|
|
if (lastAge != msAge)
|
|
{
|
|
lastAge = msAge;
|
|
LOG(INFO) << "Sleep " << cs::duration<cs::msec>(sleep_) << ", age: " << msAge << ", bufferDuration: " << cs::duration<cs::msec>(bufferDuration)
|
|
<< "\n";
|
|
}
|
|
}
|
|
else if (shortBuffer_.full())
|
|
{
|
|
auto miniMedian = miniBuffer_.median();
|
|
if ((cs::usec(shortMedian_) > cs::usec(100)) && (cs::usec(miniMedian) > cs::usec(50)) && (cs::usec(age) > cs::usec(50)))
|
|
{
|
|
double rate = (shortMedian_ / 100) * 0.00005;
|
|
rate = 1.0 - std::min(rate, 0.0005);
|
|
// LOG(INFO) << "Rate: " << rate << "\n";
|
|
setRealSampleRate(format_.rate * rate); // 0.9999);
|
|
}
|
|
else if ((cs::usec(shortMedian_) < -cs::usec(100)) && (cs::usec(miniMedian) < -cs::usec(50)) && (cs::usec(age) < -cs::usec(50)))
|
|
{
|
|
double rate = (-shortMedian_ / 100) * 0.00005;
|
|
rate = 1.0 + std::min(rate, 0.0005);
|
|
// LOG(INFO) << "Rate: " << rate << "\n";
|
|
setRealSampleRate(format_.rate * rate); // 1.0001);
|
|
}
|
|
}
|
|
|
|
updateBuffers(age.count());
|
|
|
|
// print sync stats
|
|
time_t now = time(nullptr);
|
|
if (now != lastUpdate_)
|
|
{
|
|
lastUpdate_ = now;
|
|
median_ = buffer_.median();
|
|
shortMedian_ = shortBuffer_.median();
|
|
LOG(INFO) << "Chunk: " << age.count() / 100 << "\t" << miniBuffer_.median() / 100 << "\t" << shortMedian_ / 100 << "\t" << median_ / 100 << "\t"
|
|
<< buffer_.size() << "\t" << cs::duration<cs::msec>(outputBufferDacTime) << "\n";
|
|
// LOG(INFO) << "Chunk: " << age.count()/1000 << "\t" << miniBuffer_.median()/1000 << "\t" << shortMedian_/1000 << "\t" << median_/1000 << "\t" <<
|
|
// buffer_.size() << "\t" << cs::duration<cs::msec>(outputBufferDacTime) << "\n";
|
|
}
|
|
return (abs(cs::duration<cs::msec>(age)) < 500);
|
|
}
|
|
catch (int e)
|
|
{
|
|
sleep_ = cs::usec(0);
|
|
return false;
|
|
}
|
|
}
|