itsmattkc
75d4cd899b
The macro defined namespaces confused the hell out of lupdate and more or less broke translations permanently. Looks like the only way we can do it is to have a hardcoded namespace, which goes against my instinct, but honestly how likely is it that we'll change the namespace anyway (I guess forks might want to do it, but that's their problem ;) )
156 lines
4.0 KiB
C++
156 lines
4.0 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2020 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 "audiowaveformview.h"
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#include <QFile>
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#include <QPainter>
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#include <QtMath>
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#include "common/clamp.h"
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#include "config/config.h"
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#include "timeline/timelinecommon.h"
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namespace olive {
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AudioWaveformView::AudioWaveformView(QWidget *parent) :
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SeekableWidget(parent),
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playback_(nullptr)
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{
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setAutoFillBackground(true);
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setBackgroundRole(QPalette::Base);
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}
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void AudioWaveformView::SetViewer(AudioPlaybackCache *playback)
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{
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if (playback_) {
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disconnect(playback_, &AudioPlaybackCache::Validated, this, &AudioWaveformView::ForceUpdate);
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disconnect(playback_, &AudioPlaybackCache::ParametersChanged, this, &AudioWaveformView::BackendParamsChanged);
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SetTimebase(0);
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}
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playback_ = playback;
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if (playback_) {
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connect(playback_, &AudioPlaybackCache::Validated, this, &AudioWaveformView::ForceUpdate);
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connect(playback_, &AudioPlaybackCache::ParametersChanged, this, &AudioWaveformView::BackendParamsChanged);
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SetTimebase(playback_->GetParameters().time_base());
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}
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ForceUpdate();
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}
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void AudioWaveformView::paintEvent(QPaintEvent *event)
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{
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QWidget::paintEvent(event);
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if (!playback_) {
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return;
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}
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const AudioParams& params = playback_->GetParameters();
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if (!params.is_valid()) {
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return;
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}
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if (cached_size_ != size()
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|| cached_scale_ != GetScale()
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|| cached_scroll_ != GetScroll()) {
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cached_waveform_ = QPixmap(size());
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cached_waveform_.fill(Qt::transparent);
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QIODevice* fs = playback_->CreatePlaybackDevice();
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if (fs->open(QFile::ReadOnly)) {
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QPainter wave_painter(&cached_waveform_);
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// FIXME: Hardcoded color
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wave_painter.setPen(QColor(64, 255, 160));
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int drew = 0;
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fs->seek(params.samples_to_bytes(ScreenToUnitRounded(0)));
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for (int x=0; x<width() && !fs->atEnd(); x++) {
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int samples_len = ScreenToUnitRounded(x+1) - ScreenToUnitRounded(x);
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int max_read_size = params.samples_to_bytes(samples_len);
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QByteArray read_buffer = fs->read(max_read_size);
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// Detect whether we've reached EOF and recalculate sample count if so
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if (read_buffer.size() < max_read_size) {
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samples_len = params.bytes_to_samples(read_buffer.size());
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}
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QVector<AudioVisualWaveform::SamplePerChannel> samples = AudioVisualWaveform::SumSamples(reinterpret_cast<const float*>(read_buffer.constData()),
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samples_len,
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params.channel_count());
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for (int i=0;i<params.channel_count();i++) {
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AudioVisualWaveform::DrawSample(&wave_painter, samples, x, 0, height());
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drew++;
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}
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}
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cached_size_ = size();
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cached_scale_ = GetScale();
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cached_scroll_ = GetScroll();
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fs->close();
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}
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delete fs;
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}
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QPainter p(this);
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// Draw in/out points
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DrawTimelinePoints(&p);
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// Draw cached waveform pixmap
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p.drawPixmap(0, 0, cached_waveform_);
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// Draw playhead
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p.setPen(PLAYHEAD_COLOR);
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int playhead_x = UnitToScreen(GetTime());
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p.drawLine(playhead_x, 0, playhead_x, height());
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}
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void AudioWaveformView::BackendParamsChanged()
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{
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SetTimebase(playback_->GetParameters().time_base());
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}
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void AudioWaveformView::ForceUpdate()
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{
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cached_size_ = QSize();
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update();
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}
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}
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