1 files changed, 69 insertions, 0 deletions
diff --git a/src/3rdparty/resonance-audio/resonance_audio/graph/near_field_effect_node.h b/src/3rdparty/resonance-audio/resonance_audio/graph/near_field_effect_node.h
new file mode 100644
index 000000000..83b8c6d69
--- /dev/null
+++ b/src/3rdparty/resonance-audio/resonance_audio/graph/near_field_effect_node.h
@@ -0,0 +1,69 @@
+/*
+Copyright 2018 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS-IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#ifndef RESONANCE_AUDIO_GRAPH_NEAR_FIELD_EFFECT_NODE_H_
+#define RESONANCE_AUDIO_GRAPH_NEAR_FIELD_EFFECT_NODE_H_
+
+#include <vector>
+
+#include "base/audio_buffer.h"
+#include "base/constants_and_types.h"
+#include "dsp/gain_processor.h"
+#include "dsp/near_field_processor.h"
+#include "graph/system_settings.h"
+#include "node/processing_node.h"
+
+namespace vraudio {
+
+// Node that accepts a single mono audio buffer as input, applies an appoximate
+// near field effect and outputs a processed stereo audio buffer. The stereo
+// output buffer can then be combined with a binaural output in order to
+// simulate a sound source which is close (<1m) to the listener's head.
+class NearFieldEffectNode : public ProcessingNode {
+ public:
+  // Constructor.
+  //
+  // @param source_id Output buffer source id.
+  // @param system_settings Global system settings.
+  NearFieldEffectNode(SourceId source_id,
+                      const SystemSettings& system_settings);
+
+ protected:
+  // Implements ProcessingNode.
+  const AudioBuffer* AudioProcess(const NodeInput& input) override;
+
+ private:
+  // Left and right processors apply both near field gain and panner gains.
+  GainProcessor left_panner_;
+  GainProcessor right_panner_;
+
+  // Left and right gains for near field and panning combined.
+  std::vector<float> pan_gains_;
+
+  // Near field processor used to apply approximate near field effect to the
+  // mono source signal.
+  NearFieldProcessor near_field_processor_;
+
+  // Used to obtain head rotation.
+  const SystemSettings& system_settings_;
+
+  // Output buffer.
+  AudioBuffer output_buffer_;
+};
+
+}  // namespace vraudio
+
+#endif  // RESONANCE_AUDIO_GRAPH_NEAR_FIELD_EFFECT_NODE_H_