99 lines
2.4 KiB
C++
99 lines
2.4 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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#include "pan.h"
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OLIVE_NAMESPACE_ENTER
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PanNode::PanNode()
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{
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samples_input_ = new NodeInput("samples_in", NodeParam::kSamples);
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AddInput(samples_input_);
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panning_input_ = new NodeInput("panning_in", NodeParam::kFloat);
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panning_input_->set_property("min", -1.0);
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panning_input_->set_property("max", 1.0);
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panning_input_->set_property("view", "percent");
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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 QStringLiteral("org.olivevideoeditor.Olive.pan");
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}
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QList<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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Node::Capabilities PanNode::GetCapabilities(const NodeValueDatabase &) const
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{
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return kSampleProcessor;
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}
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NodeInput *PanNode::ProcessesSamplesFrom(const NodeValueDatabase &) const
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{
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return samples_input_;
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}
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void PanNode::ProcessSamples(const NodeValueDatabase &values, const AudioRenderingParams ¶ms, const SampleBufferPtr input, SampleBufferPtr 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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for (int i=0;i<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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samples_input_->set_name(tr("Samples"));
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panning_input_->set_name(tr("Pan"));
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}
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OLIVE_NAMESPACE_EXIT
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