implemented volume and pan effects
This commit implements a structure for sample processing and two implemenations of this structure in volume and pan effects.
This commit is contained in:
itsmattkc
@@ -0,0 +1,23 @@
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# Olive - Non-Linear Video Editor
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# Copyright (C) 2019 Olive Team
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#
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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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#
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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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#
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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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add_subdirectory(pan)
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add_subdirectory(volume)
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set(OLIVE_SOURCES
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${OLIVE_SOURCES}
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PARENT_SCOPE
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)
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@@ -0,0 +1,22 @@
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# Olive - Non-Linear Video Editor
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# Copyright (C) 2019 Olive Team
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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set(OLIVE_SOURCES
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${OLIVE_SOURCES}
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node/audio/pan/pan.h
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node/audio/pan/pan.cpp
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PARENT_SCOPE
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)
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@@ -0,0 +1,67 @@
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#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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@@ -0,0 +1,27 @@
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#ifndef PANNODE_H
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#define PANNODE_H
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#include "node/node.h"
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class PanNode : public Node
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{
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public:
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PanNode();
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virtual Node* copy() const override;
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virtual QString Name() const override;
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virtual QString id() const override;
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virtual QString Category() const override;
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virtual QString Description() const override;
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virtual bool ProcessesSamples() const override;
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virtual void ProcessSamples(const NodeValueDatabase& values, const AudioRenderingParams& params, const float* input, float* output, int index) const override;
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private:
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NodeInput* samples_input_;
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NodeInput* panning_input_;
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};
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#endif // PANNODE_H
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@@ -0,0 +1,22 @@
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# Olive - Non-Linear Video Editor
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# Copyright (C) 2019 Olive Team
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#
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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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#
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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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#
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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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set(OLIVE_SOURCES
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${OLIVE_SOURCES}
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node/audio/volume/volume.h
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node/audio/volume/volume.cpp
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PARENT_SCOPE
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)
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@@ -0,0 +1,52 @@
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#include "volume.h"
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VolumeNode::VolumeNode()
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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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volume_input_ = new NodeInput("volume_in");
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volume_input_->set_data_type(NodeParam::kFloat);
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volume_input_->set_minimum(0);
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volume_input_->set_maximum(1);
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volume_input_->set_value_at_time(0, 1);
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AddInput(volume_input_);
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}
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Node *VolumeNode::copy() const
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{
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return new VolumeNode();
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}
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QString VolumeNode::Name() const
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{
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return tr("Volume");
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}
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QString VolumeNode::id() const
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{
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return "org.olivevideoeditor.Olive.volume";
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}
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QString VolumeNode::Category() const
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{
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return tr("Audio");
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}
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QString VolumeNode::Description() const
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{
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return tr("Adjusts the volume of an audio source.");
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}
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bool VolumeNode::ProcessesSamples() const
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{
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return true;
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}
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void VolumeNode::ProcessSamples(const NodeValueDatabase& values, const AudioRenderingParams& params, const float* input, float* output, int index) const
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{
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float volume_val = values[volume_input_].Get(NodeParam::kFloat).toFloat();
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output[index] = input[index] * volume_val;
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}
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@@ -0,0 +1,27 @@
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#ifndef VOLUMENODE_H
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#define VOLUMENODE_H
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#include "node/node.h"
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class VolumeNode : public Node
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{
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public:
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VolumeNode();
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virtual Node* copy() const override;
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virtual QString Name() const override;
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virtual QString id() const override;
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virtual QString Category() const override;
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virtual QString Description() const override;
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virtual bool ProcessesSamples() const override;
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virtual void ProcessSamples(const NodeValueDatabase& values, const AudioRenderingParams& params, const float* input, float* output, int index) const override;
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private:
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NodeInput* samples_input_;
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NodeInput* volume_input_;
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};
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#endif // VOLUMENODE_H
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