123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 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 "pan.h"
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#include "widget/slider/floatslider.h"
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namespace olive {
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const QString PanNode::kSamplesInput = QStringLiteral("samples_in");
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const QString PanNode::kPanningInput = QStringLiteral("panning_in");
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PanNode::PanNode()
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{
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AddInput(kSamplesInput, NodeValue::kSamples, InputFlags(kInputFlagNotKeyframable));
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AddInput(kPanningInput, NodeValue::kFloat, 0.0);
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SetInputProperty(kPanningInput, QStringLiteral("min"), -1.0);
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SetInputProperty(kPanningInput, QStringLiteral("max"), 1.0);
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SetInputProperty(kPanningInput, QStringLiteral("view"), FloatSlider::kPercentage);
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}
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Node *PanNode::copy() const
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{
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return new PanNode();
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}
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QString PanNode::Name() const
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{
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return tr("Pan");
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}
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QString PanNode::id() const
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{
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return QStringLiteral("org.olivevideoeditor.Olive.pan");
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}
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QVector<Node::CategoryID> PanNode::Category() const
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{
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return {kCategoryChannels};
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}
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QString PanNode::Description() const
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{
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return tr("Adjust the stereo panning of an audio source.");
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}
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NodeValueTable PanNode::Value(const QString &output, NodeValueDatabase &value) const
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{
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Q_UNUSED(output)
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// Create a sample job
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SampleJob job(kSamplesInput, value);
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job.InsertValue(this, kPanningInput, value);
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// Push it to our table
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NodeValueTable table = value.Merge();
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if (job.HasSamples()) {
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float pan_volume = job.GetValue(kPanningInput).data().toFloat();
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if (IsInputStatic(kPanningInput)) {
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if (!qIsNull(pan_volume) && job.samples()->audio_params().channel_count() == 2) {
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if (pan_volume > 0) {
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job.samples()->transform_volume_for_channel(0, 1.0f - pan_volume);
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} else {
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job.samples()->transform_volume_for_channel(1, 1.0f + pan_volume);
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}
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}
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table.Push(NodeValue::kSamples, QVariant::fromValue(job.samples()), this);
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} else {
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table.Push(NodeValue::kSampleJob, QVariant::fromValue(job), this);
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}
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}
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return table;
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}
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void PanNode::ProcessSamples(NodeValueDatabase &values, const SampleBufferPtr input, SampleBufferPtr output, int index) const
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{
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if (input->audio_params().channel_count() != 2) {
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// This node currently only works for stereo audio
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return;
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}
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float pan_val = values[kPanningInput].Get(NodeValue::kFloat).toFloat();
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for (int i=0;i<input->audio_params().channel_count();i++) {
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output->data(i)[index] = input->data(i)[index];
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}
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if (pan_val > 0) {
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output->data(0)[index] *= (1.0F - pan_val);
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} else if (pan_val < 0) {
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output->data(1)[index] *= (1.0F - qAbs(pan_val));
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}
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}
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void PanNode::Retranslate()
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{
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SetInputName(kSamplesInput, tr("Samples"));
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SetInputName(kPanningInput, tr("Pan"));
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}
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}
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