itsmattkc
c2e47a296c
Features a lot of timeline-related cache optimizations as well as general optimizations and improvements in timeline behavior. Should improve usability significantly.
111 lines
3.0 KiB
C++
111 lines
3.0 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 SUMSAMPLES_H
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#define SUMSAMPLES_H
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#include <QFloat16>
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#include <QPainter>
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#include <QVector>
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#include "codec/samplebuffer.h"
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OLIVE_NAMESPACE_ENTER
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/**
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* @brief A buffer of data used to store a visual representation of audio
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*
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* This differs from a SampleBuffer as the data in an AudioVisualWaveform has been reduced
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* significantly and optimized for visual display.
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*/
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class AudioVisualWaveform {
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public:
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AudioVisualWaveform() = default;
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struct SamplePerChannel {
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qfloat16 min = 0;
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qfloat16 max = 0;
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};
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using Sample = QVector<SamplePerChannel>;
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int channel_count() const
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{
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return channels_;
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}
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void set_channel_count(int channels)
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{
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channels_ = channels;
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}
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int nb_samples() const
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{
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return data_.size();
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}
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const SamplePerChannel* const_data() const
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{
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return data_.constData();
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}
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void AddSum(const float* samples, int nb_samples, int nb_channels);
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void OverwriteSamples(SampleBufferPtr samples, int sample_rate, const rational& start);
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AudioVisualWaveform Cut(const rational& time);
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void Append(const AudioVisualWaveform& waveform);
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void TrimIn(const rational& time);
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void TrimOut(const rational& time);
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void PrependSilence(const rational& time);
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void AppendSilence(const rational& time);
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// FIXME: Move to dynamic
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static const int kSumSampleRate;
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static QVector<SamplePerChannel> SumSamples(const float* samples, int nb_samples, int nb_channels);
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static QVector<SamplePerChannel> SumSamples(const qfloat16* samples, int nb_samples, int nb_channels);
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static QVector<SamplePerChannel> SumSamples(SampleBufferPtr samples, int start_index, int length);
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static QVector<SamplePerChannel> ReSumSamples(const SamplePerChannel *samples, int nb_samples, int nb_channels);
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static void DrawSample(QPainter* painter, const QVector<SamplePerChannel> &sample, int x, int y, int height);
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static void DrawWaveform(QPainter* painter, const QRect &rect, const double &scale, const AudioVisualWaveform& samples);
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private:
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template <typename T>
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static QVector<SamplePerChannel> SumSamplesInternal(const T* samples, int nb_samples, int nb_channels);
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template <typename T>
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static void ClampMinMax(SamplePerChannel &sum, T value);
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int time_to_samples(const rational& time) const;
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int channels_ = 0;
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QVector<SamplePerChannel> data_;
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};
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OLIVE_NAMESPACE_EXIT
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#endif // SUMSAMPLES_H
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