itsmattkc
bc5068afa1
For some reason, the audio cache never validated itself leading to an endless loop of trying to re-render it. This is fixed now.
120 lines
2.9 KiB
C++
120 lines
2.9 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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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 "audioplaybackcache.h"
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#include <QDir>
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#include <QFile>
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#include <QRandomGenerator>
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#include "common/filefunctions.h"
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OLIVE_NAMESPACE_ENTER
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AudioPlaybackCache::AudioPlaybackCache()
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{
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// FIXME: We just use a randomly generated number, one day this should be matchable to the
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// project so it can be reused.
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quint32 r = QRandomGenerator::global()->generate();
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filename_ = QDir(FileFunctions::GetMediaCacheLocation()).filePath(QString::number(r));
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filename_.append(QStringLiteral(".pcm"));
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}
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void AudioPlaybackCache::SetParameters(const AudioRenderingParams ¶ms)
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{
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if (params_ == params) {
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return;
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}
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params_ = params;
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// Restart empty file so there's always "something" to play
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QFile f(filename_);
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if (f.open(QFile::WriteOnly)) {
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f.close();
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}
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// Our current audio cache is unusable, so we truncate it automatically
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InvalidateAll();
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emit ParametersChanged();
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}
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void AudioPlaybackCache::WritePCM(const TimeRange &range, SampleBufferPtr samples)
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{
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QFile f(filename_);
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if (f.open(QFile::ReadWrite)) {
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qint64 start_offset = params_.time_to_bytes(range.in());
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qint64 max_len = params_.time_to_bytes(range.out());
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qint64 write_len = max_len - start_offset;
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QByteArray a = samples->toPackedData();
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if (f.size() < max_len) {
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f.resize(max_len);
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}
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f.seek(start_offset);
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f.write(a);
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if (write_len > a.size()) {
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// Fill remaining space with silence
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QByteArray s(write_len - a.size(), 0x00);
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f.write(s);
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}
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f.close();
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Validate(range);
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} else {
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qWarning() << "Failed to write PCM data to" << filename_;
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}
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}
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void AudioPlaybackCache::WriteSilence(const TimeRange &range)
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{
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QFile f(filename_);
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if (f.open(QFile::ReadWrite)) {
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qint64 start_offset = params_.time_to_bytes(range.in());
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qint64 max_len = params_.time_to_bytes(range.out());
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qint64 write_len = max_len - start_offset;
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if (f.size() < max_len) {
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f.resize(max_len);
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}
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f.seek(start_offset);
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QByteArray a(write_len, 0x00);
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f.write(a);
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f.close();
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} else {
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qWarning() << "Failed to write PCM data to" << filename_;
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}
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}
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const QString &AudioPlaybackCache::GetCacheFilename() const
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{
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return filename_;
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}
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OLIVE_NAMESPACE_EXIT
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