fix: fixed channel count negotiations algorithm

apps/common-app/src/examples/AudioVisualizer/AudioVisualizer.tsx

@@ -48,6 +48,7 @@ const AudioVisualizer: React.FC = () => {
     bufferSourceRef.current = audioContextRef.current.createBufferSource();
     bufferSourceRef.current.buffer = audioBuffer;
     bufferSourceRef.current.connect(analyserRef.current);
+    bufferSourceRef.current.connect(audioContextRef.current.destination);
 
     const when = audioContextRef.current.currentTime;
     setStartTime(when);
@@ -84,7 +85,6 @@ const AudioVisualizer: React.FC = () => {
         fftSize: FFT_SIZE,
         smoothingTimeConstant: 0.2,
       });
-      analyserRef.current.connect(audioContextRef.current.destination);
     }
 
     fetchAudioBuffer();

apps/fabric-example/ios/Podfile.lock

@@ -1842,7 +1842,7 @@ PODS:
     - React-utils (= 0.85.0)
     - ReactNativeDependencies
   - ReactNativeDependencies (0.85.0)
-  - RNAudioAPI (0.13.0):
+  - RNAudioAPI (1.0.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -1863,10 +1863,10 @@ PODS:
     - ReactCommon/turbomodule/bridging
     - ReactCommon/turbomodule/core
     - ReactNativeDependencies
-    - RNAudioAPI/audioapi (= 0.13.0)
+    - RNAudioAPI/audioapi (= 1.0.0)
     - RNWorklets
     - Yoga
-  - RNAudioAPI/audioapi (0.13.0):
+  - RNAudioAPI/audioapi (1.0.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -1887,12 +1887,12 @@ PODS:
     - ReactCommon/turbomodule/bridging
     - ReactCommon/turbomodule/core
     - ReactNativeDependencies
-    - RNAudioAPI/audioapi/audioapi_dsp (= 0.13.0)
-    - RNAudioAPI/audioapi/ios (= 0.13.0)
-    - RNAudioAPI/audioapi/miniaudio_impl (= 0.13.0)
+    - RNAudioAPI/audioapi/audioapi_dsp (= 1.0.0)
+    - RNAudioAPI/audioapi/ios (= 1.0.0)
+    - RNAudioAPI/audioapi/miniaudio_impl (= 1.0.0)
     - RNWorklets
     - Yoga
-  - RNAudioAPI/audioapi/audioapi_dsp (0.13.0):
+  - RNAudioAPI/audioapi/audioapi_dsp (1.0.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -1915,7 +1915,7 @@ PODS:
     - ReactNativeDependencies
     - RNWorklets
     - Yoga
-  - RNAudioAPI/audioapi/ios (0.13.0):
+  - RNAudioAPI/audioapi/ios (1.0.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -1938,7 +1938,7 @@ PODS:
     - ReactNativeDependencies
     - RNWorklets
     - Yoga
-  - RNAudioAPI/audioapi/miniaudio_impl (0.13.0):
+  - RNAudioAPI/audioapi/miniaudio_impl (1.0.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -2476,7 +2476,7 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   FBLazyVector: c00c20551d40126351a6783c47ce75f5b374851b
-  hermes-engine: 91023181d4bc5948b457de5314623fbfe4f8604e
+  hermes-engine: c399a2e224a0b13c589d76b4fc05e14bdd76fa88
   RCTDeprecation: 3bb167081b134461cfeb875ff7ae1945f8635257
   RCTRequired: 74839f55d5058a133a0bc4569b0afec750957f64
   RCTSwiftUI: 87a316382f3eab4dd13d2a0d0fd2adcce917361a
@@ -2485,7 +2485,7 @@ SPEC CHECKSUMS:
   React: 1b1536b9099195944034e65b1830f463caaa8390
   React-callinvoker: 6dff6d17d1d6cc8fdf85468a649bafed473c65f5
   React-Core: 00faa4d038298089a1d5a5b21dde8660c4f0820d
-  React-Core-prebuilt: a6d614de037caff7898424dfc22915ec792de921
+  React-Core-prebuilt: ab26be1216323aea7c76f96ca450bffa7bcd4a72
   React-CoreModules: a17807f849bfd86045b0b9a75ec8c19373b482f6
   React-cxxreact: c7b53ace5827be54048288bce5c55f337c41e95f
   React-debug: e1f00fcd2cef58a2897471a6d76a4ef5f5f90c74
@@ -2549,8 +2549,8 @@ SPEC CHECKSUMS:
   ReactAppDependencyProvider: 5787b37b8e2e51dfeab697ec031cc7c4080dcea2
   ReactCodegen: d07ee3c8db75b43d1cbe479ae6affebf9925c733
   ReactCommon: fe2a3af8975e63efa60f95fca8c34dc85deee360
-  ReactNativeDependencies: 4d5ce2683b6d74f7c686bf90a88c7d381295cf3c
-  RNAudioAPI: b689aba6e8b4e6ac85b7e4eb53ebb74a020fbed4
+  ReactNativeDependencies: 212738cc51e6c4cc34ee487890497d6f41979ec0
+  RNAudioAPI: 6b07e5393a8016de35ba8d2f8b010ce2d7e0c3fd
   RNGestureHandler: 187c5c7936abf427bc4d22d6c3b1ac80ad1f63c0
   RNReanimated: 64f4b3b33b48b19e0ba76a352571b52b1e931981
   RNScreens: 01b065ded2dfe7987bcce770ff3a196be417ff41

packages/react-native-audio-api/common/cpp/audioapi/core/AudioNode.h

@@ -78,6 +78,24 @@ class AudioNode : public utils::graph::GraphObject, public std::enable_shared_fr
     audioBuffer_ = buffer;
   }
 
+  /// @brief Buffer whose channel layout is negotiated from upstream connections.
+  /// Default: same as the output buffer. StereoPanner negotiates the input
+  /// buffer while keeping a fixed stereo output.
+  [[nodiscard]] virtual std::shared_ptr<DSPAudioBuffer> getNegotiatedBuffer() const {
+    return getOutputBuffer();
+  }
+
+  virtual void setNegotiatedBuffer(const std::shared_ptr<DSPAudioBuffer> &buffer) {
+    setOutputBuffer(buffer);
+  }
+
+  /// @brief Channel count this node presents on upstream connections (toward
+  /// AudioDestinationNode) after negotiation. Default: the negotiated channel
+  /// count. StereoPanner always outputs stereo.
+  [[nodiscard]] virtual size_t getUpstreamChannelCount(size_t negotiatedChannelCount) const {
+    return negotiatedChannelCount;
+  }
+
   /// @note JS Thread only
   [[nodiscard]] bool requiresTailProcessing() const;
 

packages/react-native-audio-api/common/cpp/audioapi/core/effects/StereoPannerNode.cpp

@@ -29,6 +29,18 @@ std::shared_ptr<DSPAudioBuffer> StereoPannerNode::getOutputBuffer() const {
   return outputBuffer_;
 }
 
+std::shared_ptr<DSPAudioBuffer> StereoPannerNode::getNegotiatedBuffer() const {
+  return getInputBuffer();
+}
+
+void StereoPannerNode::setNegotiatedBuffer(const std::shared_ptr<DSPAudioBuffer> &buffer) {
+  audioBuffer_ = buffer;
+}
+
+size_t StereoPannerNode::getUpstreamChannelCount(size_t /*negotiatedChannelCount*/) const {
+  return outputBuffer_->getNumberOfChannels();
+}
+
 void StereoPannerNode::processNode(int framesToProcess) {
   std::shared_ptr<BaseAudioContext> context = context_.lock();
   if (context == nullptr) {

packages/react-native-audio-api/common/cpp/audioapi/core/effects/StereoPannerNode.h

@@ -19,6 +19,9 @@ class StereoPannerNode : public AudioNode {
 
   [[nodiscard]] std::shared_ptr<AudioParam> getPanParam() const;
   [[nodiscard]] std::shared_ptr<DSPAudioBuffer> getOutputBuffer() const override;
+  [[nodiscard]] std::shared_ptr<DSPAudioBuffer> getNegotiatedBuffer() const override;
+  void setNegotiatedBuffer(const std::shared_ptr<DSPAudioBuffer> &buffer) override;
+  [[nodiscard]] size_t getUpstreamChannelCount(size_t negotiatedChannelCount) const override;
 
  protected:
   void processNode(int framesToProcess) override;