itsmattkc
7ad2eae7a2
This commit implements a structure for sample processing and two implemenations of this structure in volume and pan effects.
68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
#include "pan.h"
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PanNode::PanNode()
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{
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samples_input_ = new NodeInput("samples_in");
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samples_input_->set_data_type(NodeParam::kSamples);
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AddInput(samples_input_);
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panning_input_ = new NodeInput("panning_in");
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panning_input_->set_data_type(NodeParam::kFloat);
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panning_input_->set_minimum(-1);
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panning_input_->set_maximum(1);
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panning_input_->set_value_at_time(0, 0);
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AddInput(panning_input_);
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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 "org.olivevideoeditor.Olive.pan";
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}
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QString PanNode::Category() const
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{
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return tr("Audio");
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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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bool PanNode::ProcessesSamples() const
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{
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return true;
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}
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void PanNode::ProcessSamples(const NodeValueDatabase &values, const AudioRenderingParams ¶ms, const float *input, float *output, int index) const
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{
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if (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[panning_input_].Get(NodeParam::kFloat).toFloat();
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if (index%2 == 0) {
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// Sample is left channel
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if (pan_val > 0) {
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output[index] = input[index] * (1.0F - pan_val);
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}
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} else {
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// Sample is right channel
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if (pan_val < 0) {
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output[index] = input[index] * (1.0F - qAbs(pan_val));
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}
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}
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}
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