100 lines
2.3 KiB
C++
100 lines
2.3 KiB
C++
#include "audiobackend.h"
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#include "audioworker.h"
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AudioBackend::AudioBackend(QObject *parent) :
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AudioRenderBackend(parent)
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{
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}
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AudioBackend::~AudioBackend()
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{
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Close();
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}
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QIODevice *AudioBackend::GetAudioPullDevice()
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{
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pull_device_.setFileName(CachePathName());
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return &pull_device_;
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}
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bool AudioBackend::InitInternal()
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{
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// Initiate one thread per CPU core
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for (int i=0;i<threads().size();i++) {
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// Create one processor object for each thread
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AudioWorker* processor = new AudioWorker(decoder_cache());
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processor->SetParameters(params());
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processors_.append(processor);
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}
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return true;
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}
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void AudioBackend::CloseInternal()
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{
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}
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bool AudioBackend::CompileInternal()
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{
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// This backend doesn't compile anything yet
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return true;
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}
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void AudioBackend::DecompileInternal()
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{
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// This backend doesn't compile anything yet
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}
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void AudioBackend::ConnectWorkerToThis(RenderWorker *worker)
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{
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AudioRenderBackend::ConnectWorkerToThis(worker);
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connect(worker, &RenderWorker::CompletedCache, this, &AudioBackend::ThreadCompletedCache);
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}
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void AudioBackend::ThreadCompletedCache(NodeDependency dep, NodeValueTable data, qint64 job_time)
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{
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SetWorkerBusyState(static_cast<RenderWorker*>(sender()), false);
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if (job_time == render_job_info_.value(dep.range())) {
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render_job_info_.remove(dep.range());
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QByteArray cached_samples = data.Get(NodeParam::kSamples).toByteArray();
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int offset = params().time_to_bytes(dep.in());
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int length = params().time_to_bytes(dep.range().length());
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int out_point = offset + length;
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QFile f(CachePathName());
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if (f.open(QFile::ReadWrite)) {
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if (f.size() < out_point && !f.resize(out_point)) {
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qCritical() << "Failed to resize file" << CachePathName();
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}
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if (!f.seek(offset)) {
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qCritical() << "Failed to seek file" << CachePathName();
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}
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// Replace data with this data
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int copy_length = qMin(length, cached_samples.size());
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f.write(cached_samples.data(), copy_length);
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if (copy_length < length) {
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// Fill in remainder with silence
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QByteArray empty_space(length - copy_length, 0);
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f.write(empty_space);
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}
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f.close();
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} else {
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qWarning() << "Failed to write to cached PCM file";
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}
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}
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CacheNext();
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}
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