Feat/android/gain node

android/CMakeLists.txt

@@ -17,6 +17,7 @@ include_directories(
         ../cpp/AudioDestinationNode
         ../cpp/OscillatorNode
         ../cpp/AudioNode
+        ../cpp/GainNode
         src/main/cpp
         ../node_modules/react-native/ReactCommon/jsi
         ../node_modules/react-native/ReactAndroid/src/main/jni/react/jni
@@ -29,6 +30,7 @@ add_library(react-native-audio-context SHARED
         src/main/cpp/OscillatorNode
         src/main/cpp/AudioDestinationNode
         src/main/cpp/AudioNode
+        src/main/cpp/GainNode
 
         ../cpp/AudioContext/AudioContextHostObject
         ../cpp/AudioContext/AudioContextWrapper.h
@@ -42,9 +44,13 @@ add_library(react-native-audio-context SHARED
         ../cpp/OscillatorNode/OscillatorNodeWrapper.h
         ../cpp/OscillatorNode/android/OscillatorNodeWrapper.cpp
 
-        ../cpp/AudioNode/AudioNodeHostObject.h
+        ../cpp/AudioNode/AudioNodeHostObject
         ../cpp/AudioNode/AudioNodeWrapper.h
         ../cpp/AudioNode/android/AudioNodeWrapper.cpp
+
+        ../cpp/GainNode/GainNodeHostObject
+        ../cpp/GainNode/GainNodeWrapper.h
+        ../cpp/GainNode/android/GainNodeWrapper.cpp
 )
 
 find_package(ReactAndroid REQUIRED CONFIG)

android/src/main/cpp/AudioContext.cpp

@@ -22,7 +22,7 @@ namespace audiocontext
     return std::shared_ptr<OscillatorNode>(oscillatorCppInstance);
   }
 
-    std::shared_ptr<AudioDestinationNode> AudioContext::getDestination()
+  std::shared_ptr<AudioDestinationNode> AudioContext::getDestination()
   {
     static const auto method = javaClassLocal()->getMethod<AudioDestinationNode()>("getDestination");
     auto destination = method(javaObject_.get());
@@ -31,4 +31,13 @@ namespace audiocontext
     return std::shared_ptr<AudioDestinationNode>(destinationCppInstance);
   }
 
+    std::shared_ptr<GainNode> AudioContext::createGain()
+    {
+        static const auto method = javaClassLocal()->getMethod<GainNode()>("createGain");
+        auto gain = method(javaObject_.get());
+        auto gainCppInstance = gain->cthis();
+
+        return std::shared_ptr<GainNode>(gainCppInstance);
+    }
+
 } // namespace audiocontext

android/src/main/cpp/AudioContext.h

@@ -6,9 +6,10 @@
 #include <react/jni/JMessageQueueThread.h>
 #include <memory>
 #include "AudioContextHostObject.h"
+#include "AudioContextWrapper.h"
 #include "OscillatorNode.h"
 #include "AudioDestinationNode.h"
-#include "AudioContextWrapper.h"
+#include "GainNode.h"
 
 namespace audiocontext
 {
@@ -39,6 +40,7 @@ namespace audiocontext
 
     std::shared_ptr<OscillatorNode> createOscillator();
     std::shared_ptr<AudioDestinationNode> getDestination();
+    std::shared_ptr<GainNode> createGain();
 
     void install(jlong jsContext);
 

android/src/main/cpp/AudioDestinationNode.cpp

@@ -1,7 +1 @@
 #include "AudioDestinationNode.h"
-
-namespace audiocontext {
-
-    using namespace facebook::jni;
-
-} // namespace audiocontext

android/src/main/cpp/AudioDestinationNode.h

@@ -4,15 +4,13 @@
 #include <react/jni/CxxModuleWrapper.h>
 #include <react/jni/JMessageQueueThread.h>
 #include <memory>
-#include "OscillatorNode.h"
+#include "AudioNode.h"
 
 namespace audiocontext {
 
     using namespace facebook;
     using namespace facebook::jni;
 
-    class OscillatorNode;
-
     class AudioDestinationNode : public jni::HybridClass<AudioDestinationNode, AudioNode> {
     public:
         static auto constexpr kJavaDescriptor = "Lcom/audiocontext/nodes/AudioDestinationNode;";

android/src/main/cpp/GainNode.cpp

@@ -0,0 +1,16 @@
+#include "GainNode.h"
+
+namespace audiocontext{
+
+    using namespace facebook::jni;
+
+    double GainNode::getGain(){
+        static const auto method = javaClassLocal()->getMethod<jdouble()>("getGain");
+        return method(javaObject_.get());
+    }
+
+    void GainNode::setGain(double gain){
+        static const auto method = javaClassLocal()->getMethod<void(jdouble)>("setGain");
+        method(javaObject_.get(), gain);
+    }
+}

android/src/main/cpp/GainNode.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <fbjni/fbjni.h>
+#include <react/jni/CxxModuleWrapper.h>
+#include <react/jni/JMessageQueueThread.h>
+#include <memory>
+#include "AudioNode.h"
+
+namespace audiocontext {
+
+    using namespace facebook;
+    using namespace facebook::jni;
+
+    class GainNode : public jni::HybridClass<GainNode, AudioNode> {
+    public:
+        static auto constexpr kJavaDescriptor = "Lcom/audiocontext/nodes/GainNode;";
+
+        double getGain();
+
+        void setGain(double gain);
+    };
+
+} // namespace audiocontext

android/src/main/java/com/audiocontext/context/AudioContext.kt

@@ -1,6 +1,7 @@
 package com.audiocontext.context
 
 import com.audiocontext.nodes.AudioDestinationNode
+import com.audiocontext.nodes.GainNode
 import com.audiocontext.nodes.oscillator.OscillatorNode
 import com.facebook.jni.HybridData
 
@@ -27,4 +28,8 @@ class AudioContext() : BaseAudioContext {
   override fun createOscillator(): OscillatorNode {
     return OscillatorNode(this)
   }
+
+  override fun createGain(): GainNode {
+    return GainNode(this)
+  }
 }

android/src/main/java/com/audiocontext/context/BaseAudioContext.kt

@@ -1,11 +1,13 @@
 package com.audiocontext.context
 
 import com.audiocontext.nodes.AudioDestinationNode
+import com.audiocontext.nodes.GainNode
 import com.audiocontext.nodes.oscillator.OscillatorNode
 
 interface BaseAudioContext {
   val sampleRate: Int
   val destination: AudioDestinationNode
 
   abstract fun createOscillator(): OscillatorNode
+  abstract fun createGain(): GainNode
 }

android/src/main/java/com/audiocontext/nodes/AudioDestinationNode.kt

@@ -1,10 +1,8 @@
 package com.audiocontext.nodes
 
 import android.media.AudioTrack
-import android.util.Log
 import com.audiocontext.context.BaseAudioContext
 import com.facebook.jni.HybridData
-import com.facebook.react.bridge.ReactApplicationContext
 
 
 class AudioDestinationNode(context: BaseAudioContext): AudioNode(context) {

android/src/main/java/com/audiocontext/nodes/GainNode.kt

@@ -0,0 +1,22 @@
+package com.audiocontext.nodes
+
+import android.media.AudioTrack
+import com.audiocontext.context.BaseAudioContext
+import com.facebook.jni.HybridData
+
+class GainNode(context: BaseAudioContext): AudioNode(context) {
+  override val numberOfInputs: Int = 1
+  override val numberOfOutputs: Int = 1
+  private var gain: Double = 1.0
+    get() = field
+    set(value) {
+      field = value
+    }
+
+  private val mHybridData: HybridData? = initHybrid();
+
+  override fun process(buffer: ShortArray, audioTrack: AudioTrack) {
+    audioTrack.setVolume(gain.toFloat())
+    super.process(buffer, audioTrack)
+  }
+}

cpp/AudioContext/AudioContextHostObject.cpp

@@ -27,6 +27,14 @@ namespace audiocontext {
             return jsi::Object::createFromHostObject(runtime, destinationHostObject);
         }
 
+        if(propName == "createGain") {
+            return jsi::Function::createFromHostFunction(runtime, propNameId, 0, [this](jsi::Runtime& runtime, const jsi::Value& thisValue, const jsi::Value* arguments, size_t count) -> jsi::Value {
+                auto gain = wrapper_->createGain();
+                auto gainHostObject = GainNodeHostObject::createFromWrapper(gain);
+                return jsi::Object::createFromHostObject(runtime, gainHostObject);
+            });
+        }
+
         throw std::runtime_error("Not yet implemented!");
     }
 

cpp/AudioContext/AudioContextHostObject.h

@@ -6,6 +6,7 @@
 #include "AudioContextWrapper.h"
 #include "OscillatorNodeHostObject.h"
 #include "AudioDestinationNodeHostObject.h"
+#include "GainNodeHostObject.h"
 
 namespace audiocontext
 {
@@ -19,9 +20,9 @@ namespace audiocontext
         std::shared_ptr<AudioContextWrapper> wrapper_;
 
     public:
-        explicit AudioContextHostObject(std::shared_ptr<AudioContextWrapper> wrapper) : wrapper_(wrapper) {}
+        explicit AudioContextHostObject(const std::shared_ptr<AudioContextWrapper> &wrapper) : wrapper_(wrapper) {}
 
-        static void createAndInstallFromWrapper(const std::shared_ptr<AudioContextWrapper>& wrapper, jlong jsContext) {
+        static void createAndInstallFromWrapper(const std::shared_ptr<AudioContextWrapper> &wrapper, jlong jsContext) {
             auto runtime = reinterpret_cast<jsi::Runtime *>(jsContext);
             auto hostObject = std::make_shared<AudioContextHostObject>(wrapper);
             auto object = jsi::Object::createFromHostObject(*runtime, hostObject);

cpp/AudioContext/AudioContextWrapper.h

@@ -4,6 +4,7 @@
 #include <utility>
 #include "OscillatorNodeWrapper.h"
 #include "AudioDestinationNodeWrapper.h"
+#include "GainNodeWrapper.h"
 
 #ifdef ANDROID
 #include "AudioContext.h"
@@ -28,11 +29,12 @@ namespace audiocontext {
     public:
 #ifdef ANDROID
         explicit AudioContextWrapper(
-                std::shared_ptr<AudioContext> audiocontext) : audiocontext_(audiocontext) {}
+                const std::shared_ptr<AudioContext> &audiocontext) : audiocontext_(audiocontext) {}
 #else
         explicit AudioContextWrapper() {}
 #endif
         std::shared_ptr<OscillatorNodeWrapper> createOscillator();
         std::shared_ptr<AudioDestinationNodeWrapper> getDestination();
+        std::shared_ptr<GainNodeWrapper> createGain();
     };
 } // namespace audiocontext

cpp/AudioContext/android/AudioContextWrapper.cpp

@@ -11,4 +11,9 @@ namespace audiocontext {
         auto destination = audiocontext_->getDestination();
         return std::make_shared<AudioDestinationNodeWrapper>(destination);
     }
+
+    std::shared_ptr<GainNodeWrapper> AudioContextWrapper::createGain() {
+        auto gain = audiocontext_->createGain();
+        return std::make_shared<GainNodeWrapper>(gain);
+    }
 } // namespace audiocontext

cpp/AudioDestinationNode/AudioDestinationNodeHostObject.h

@@ -8,21 +8,20 @@ namespace audiocontext {
     using namespace facebook;
 
     class AudioDestinationNodeWrapper;
-    class OscillatorNodeWrapper;
 
     class AudioDestinationNodeHostObject : public AudioNodeHostObject {
 
     protected:
         std::shared_ptr<AudioDestinationNodeWrapper> wrapper_;
 
     public:
-        explicit AudioDestinationNodeHostObject(std::shared_ptr<AudioDestinationNodeWrapper> wrapper): AudioNodeHostObject(wrapper), wrapper_(wrapper) {}
+        explicit AudioDestinationNodeHostObject(const std::shared_ptr<AudioDestinationNodeWrapper> &wrapper): AudioNodeHostObject(wrapper), wrapper_(wrapper) {}
 
         jsi::Value get(jsi::Runtime& runtime, const jsi::PropNameID& name) override;
         void set(jsi::Runtime& runtime, const jsi::PropNameID& name, const jsi::Value& value) override;
         std::vector<jsi::PropNameID> getPropertyNames(jsi::Runtime& rt) override;
 
-        static std::shared_ptr<AudioDestinationNodeHostObject> createFromWrapper(std::shared_ptr<AudioDestinationNodeWrapper> wrapper) {
+        static std::shared_ptr<AudioDestinationNodeHostObject> createFromWrapper(const std::shared_ptr<AudioDestinationNodeWrapper> &wrapper) {
             return std::make_shared<AudioDestinationNodeHostObject>(wrapper);
         }
     };

cpp/AudioDestinationNode/AudioDestinationNodeWrapper.h

@@ -4,7 +4,7 @@
 
 #ifdef ANDROID
 #include "AudioDestinationNode.h"
-#include "OscillatorNodeWrapper.h"
+#include "AudioNodeWrapper.h"
 #endif
 
 namespace audiocontext {
@@ -17,15 +17,12 @@ namespace audiocontext {
     class AudioDestinationNodeWrapper: public AudioNodeWrapper {
 #ifdef ANDROID
     private:
-        friend class OscillatorNodeWrapper;
-
         std::shared_ptr<AudioDestinationNode> destination_;
-#endif
 
     public:
-#ifdef ANDROID
-        explicit AudioDestinationNodeWrapper(std::shared_ptr<AudioDestinationNode> destination) : AudioNodeWrapper(destination), destination_(destination) {}
+        explicit AudioDestinationNodeWrapper(const std::shared_ptr<AudioDestinationNode> &destination) : AudioNodeWrapper(destination), destination_(destination) {}
 #else
+    public:
         explicit AudioDestinationNodeWrapper() {}
 #endif
     };

cpp/AudioNode/AudioNodeHostObject.cpp

@@ -0,0 +1,45 @@
+#include "AudioNodeHostObject.h"
+
+namespace audiocontext {
+    using namespace facebook;
+
+    std::vector<jsi::PropNameID> AudioNodeHostObject::getPropertyNames(jsi::Runtime& runtime) {
+        std::vector<jsi::PropNameID> propertyNames;
+        propertyNames.push_back(jsi::PropNameID::forAscii(runtime, "connect"));
+        propertyNames.push_back(jsi::PropNameID::forAscii(runtime, "disconnect"));
+        return propertyNames;
+    }
+
+    jsi::Value AudioNodeHostObject::get(jsi::Runtime& runtime, const jsi::PropNameID& propNameId) {
+        auto propName = propNameId.utf8(runtime);
+
+        if (propName == "connect")
+        {
+            return jsi::Function::createFromHostFunction(runtime, propNameId, 1, [this](jsi::Runtime &rt, const jsi::Value &thisValue, const jsi::Value *args, size_t count) -> jsi::Value
+            {
+                auto node = args[0].getObject(rt).getHostObject<AudioNodeHostObject>(rt);
+                wrapper_->connect(std::shared_ptr<AudioNodeHostObject>(node)->wrapper_);
+                return jsi::Value::undefined();
+            });
+        }
+
+        if (propName == "disconnect")
+        {
+            return jsi::Function::createFromHostFunction(runtime, propNameId, 1, [this](jsi::Runtime &rt, const jsi::Value &thisValue, const jsi::Value *args, size_t count) -> jsi::Value
+            {
+                auto node = args[0].getObject(rt).getHostObject<AudioNodeHostObject>(rt);
+                wrapper_->disconnect(std::shared_ptr<AudioNodeHostObject>(node)->wrapper_);
+                return jsi::Value::undefined();
+            });
+        }
+
+        throw std::runtime_error("Not yet implemented!");
+    }
+
+    void AudioNodeHostObject::set(jsi::Runtime& runtime, const jsi::PropNameID& propNameId, const jsi::Value& value) {
+        auto propName = propNameId.utf8(runtime);
+
+        throw std::runtime_error("Not yet implemented!");
+    }
+
+}

cpp/AudioNode/AudioNodeHostObject.h

@@ -10,10 +10,14 @@ namespace audiocontext {
 
     class AudioNodeHostObject : public jsi::HostObject {
 
-    public:
+    protected:
         std::shared_ptr<AudioNodeWrapper> wrapper_;
 
     public:
-        explicit AudioNodeHostObject(std::shared_ptr<AudioNodeWrapper> wrapper) : wrapper_(wrapper) {}
+        explicit AudioNodeHostObject(const std::shared_ptr<AudioNodeWrapper> &wrapper) : wrapper_(wrapper) {}
+
+        jsi::Value get(jsi::Runtime& runtime, const jsi::PropNameID& name) override;
+        void set(jsi::Runtime& runtime, const jsi::PropNameID& name, const jsi::Value& value) override;
+        std::vector<jsi::PropNameID> getPropertyNames(jsi::Runtime& rt) override;
     };
 } // namespace audiocontext