129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 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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{
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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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#define super Node
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PanNode::PanNode()
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{
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AddInput(kSamplesInput, NodeValue::kSamples,
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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"),
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FloatSlider::kPercentage);
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SetFlag(kAudioEffect);
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SetEffectInput(kSamplesInput);
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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 { kCategoryFilter };
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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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void PanNode::Value(const NodeValueRow &value, const NodeGlobals &globals,
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NodeValueTable *table) const
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{
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// Create a sample job
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SampleBuffer samples = value[kSamplesInput].toSamples();
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if (samples.is_allocated()) {
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// This node is only compatible with stereo audio
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if (samples.audio_params().channel_count() == 2) {
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// If the input is static, we can just do it now which will be faster
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if (IsInputStatic(kPanningInput)) {
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float pan_volume = value[kPanningInput].toDouble();
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if (!qIsNull(pan_volume)) {
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if (pan_volume > 0) {
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samples.transform_volume_for_channel(0,
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1.0f - pan_volume);
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} else {
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samples.transform_volume_for_channel(1,
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1.0f + pan_volume);
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}
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}
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table->Push(NodeValue(NodeValue::kSamples, samples, this));
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} else {
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// Requires job
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table->Push(NodeValue::kSamples,
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SampleJob(globals.time(), kSamplesInput, value),
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this);
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}
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} else {
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// Pass right through
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table->Push(value[kSamplesInput]);
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}
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}
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}
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void PanNode::ProcessSamples(const NodeValueRow &values,
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const SampleBuffer &input, SampleBuffer &output,
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int index) const
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{
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float pan_val = values[kPanningInput].toDouble();
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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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super::Retranslate();
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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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