implemented volume and pan effects

This commit implements a structure for sample processing and two implemenations of this structure in volume and pan effects.
2019-12-24 12:34:30 +11:00
parent 3a7b3ffac6
commit 7ad2eae7a2
13 changed files with 275 additions and 1 deletions
@@ -0,0 +1,52 @@
+#include "volume.h"
+
+VolumeNode::VolumeNode()
+{
+  samples_input_ = new NodeInput("samples_in");
+  samples_input_->set_data_type(NodeParam::kSamples);
+  AddInput(samples_input_);
+
+  volume_input_ = new NodeInput("volume_in");
+  volume_input_->set_data_type(NodeParam::kFloat);
+  volume_input_->set_minimum(0);
+  volume_input_->set_maximum(1);
+  volume_input_->set_value_at_time(0, 1);
+  AddInput(volume_input_);
+}
+
+Node *VolumeNode::copy() const
+{
+  return new VolumeNode();
+}
+
+QString VolumeNode::Name() const
+{
+  return tr("Volume");
+}
+
+QString VolumeNode::id() const
+{
+  return "org.olivevideoeditor.Olive.volume";
+}
+
+QString VolumeNode::Category() const
+{
+  return tr("Audio");
+}
+
+QString VolumeNode::Description() const
+{
+  return tr("Adjusts the volume of an audio source.");
+}
+
+bool VolumeNode::ProcessesSamples() const
+{
+  return true;
+}
+
+void VolumeNode::ProcessSamples(const NodeValueDatabase& values, const AudioRenderingParams& params, const float* input, float* output, int index) const
+{
+  float volume_val = values[volume_input_].Get(NodeParam::kFloat).toFloat();
+
+  output[index] = input[index] * volume_val;
+}