itsmattkc
f7ab0bb640
Fixes issues with PCM file placement, optimizes some audio-based timeline and cache operations, just generally a better approach.
157 lines
3.3 KiB
C++
157 lines
3.3 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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#ifndef AUDIOPLAYBACKCACHE_H
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#define AUDIOPLAYBACKCACHE_H
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#include "common/timerange.h"
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#include "codec/samplebuffer.h"
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#include "render/playbackcache.h"
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OLIVE_NAMESPACE_ENTER
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class AudioPlaybackCache : public PlaybackCache
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{
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Q_OBJECT
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public:
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AudioPlaybackCache(QObject* parent = nullptr);
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virtual ~AudioPlaybackCache() override;
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AudioParams GetParameters()
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{
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return params_;
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}
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void SetParameters(const AudioParams& params);
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void WritePCM(const TimeRange &range, SampleBufferPtr samples, const qint64& job_time);
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void WriteSilence(const TimeRange &range, qint64 job_time);
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QList<TimeRange> GetValidRanges(const TimeRange &range, const qint64 &job_time);
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class Segment
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{
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public:
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Segment() = default;
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Segment(const rational& length, const QString& s);
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const rational& length() const
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{
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return length_;
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}
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void set_length(const rational& length)
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{
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length_ = length;
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}
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const QString& filename() const
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{
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return filename_;
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}
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void set_filename(const QString& filename)
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{
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filename_ = filename;
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}
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private:
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QString filename_;
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rational length_;
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};
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using Playlist = QVector<Segment>;
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class PlaybackDevice : public QIODevice
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{
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public:
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PlaybackDevice(const Playlist& playlist, QObject* parent = nullptr);
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virtual ~PlaybackDevice() override;
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virtual bool isSequential() const override
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{
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return false;
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}
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virtual bool seek(qint64 pos) override;
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virtual qint64 size() const override;
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virtual qint64 readData(char *data, qint64 maxSize) override;
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virtual qint64 writeData(const char *data, qint64 maxSize) override
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{
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Q_UNUSED(data)
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Q_UNUSED(maxSize)
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return -1;
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}
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private:
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Playlist playlist_;
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int current_segment_;
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qint64 segment_read_index_;
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};
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PlaybackDevice* CreatePlaybackDevice(QObject *parent = nullptr) const;
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signals:
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void ParametersChanged();
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protected:
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virtual void ShiftEvent(const rational& from, const rational& to) override;
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virtual void LengthChangedEvent(const rational& old, const rational& newlen) override;
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private:
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static const rational kDefaultSegmentSize;
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Segment CloneSegment(const Segment& s) const;
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Segment CreateSegment(const rational& length) const;
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QString GenerateSegmentFilename() const;
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void TrimSegmentIn(Segment* s, const rational& new_length);
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void TrimSegmentOut(Segment* s, const rational& new_length);
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void RemoveSegmentFromArray(int index);
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Playlist segments_;
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rational segment_length_;
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AudioParams params_;
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};
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OLIVE_NAMESPACE_EXIT
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#endif // AUDIOPLAYBACKCACHE_H
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