From cfa3e96d96b3a4f7f3b3e57721cb7d794a47dbef Mon Sep 17 00:00:00 2001
From: Michal Sek <michal.sek@swmansion.com>
Date: Wed, 4 Dec 2024 17:56:16 +0100
Subject: [PATCH] feat: decode audio data source with promise

---
 .gitignore                                    |  1 +
 .../src/examples/AudioFile/AudioFile.tsx      | 33 ++++++-----
 apps/fabric-example/ios/Podfile.lock          |  4 +-
 .../AudioAPIInstallerHostObject.cpp           |  8 ++-
 .../AudioAPIInstallerHostObject.h             |  6 +-
 .../cpp/HostObjects/AudioBufferHostObject.cpp |  6 ++
 .../HostObjects/AudioContextHostObject.cpp    |  4 +-
 .../cpp/HostObjects/AudioContextHostObject.h  |  7 ++-
 .../BaseAudioContextHostObject.cpp            | 41 +++++++------
 .../HostObjects/BaseAudioContextHostObject.h  |  4 +-
 .../common/cpp/utils/JsiPromise.cpp           | 58 +++++++++++++++++++
 .../common/cpp/utils/JsiPromise.h             | 39 +++++++++++++
 .../cpp/wrappers/BaseAudioContextWrapper.cpp  |  1 +
 .../ios/AudioAPIModule.mm                     |  4 +-
 .../src/core/BaseAudioContext.ts              | 10 +++-
 .../react-native-audio-api/src/interfaces.ts  |  2 +-
 16 files changed, 179 insertions(+), 49 deletions(-)
 create mode 100644 packages/react-native-audio-api/common/cpp/utils/JsiPromise.cpp
 create mode 100644 packages/react-native-audio-api/common/cpp/utils/JsiPromise.h

diff --git a/.gitignore b/.gitignore
index 6d08e317..94a48503 100644
--- a/.gitignore
+++ b/.gitignore
@@ -83,3 +83,4 @@ react-native-audio-api*.tgz
 # Android
 .kotlin
 
+.env
diff --git a/apps/common-app/src/examples/AudioFile/AudioFile.tsx b/apps/common-app/src/examples/AudioFile/AudioFile.tsx
index 91b861ac..3a189a9a 100644
--- a/apps/common-app/src/examples/AudioFile/AudioFile.tsx
+++ b/apps/common-app/src/examples/AudioFile/AudioFile.tsx
@@ -1,12 +1,16 @@
-import React from 'react';
+import React, { useCallback } from 'react';
 import { useState, useRef, useEffect, FC } from 'react';
 import { Container, Button } from '../../components';
 
 import {
+  AudioBuffer,
   AudioContext,
   AudioBufferSourceNode,
-  AudioBuffer,
 } from 'react-native-audio-api';
+import { ActivityIndicator } from 'react-native';
+
+const assetUrl =
+  'https://audio-ssl.itunes.apple.com/apple-assets-us-std-000001/AudioPreview18/v4/9c/db/54/9cdb54b3-5c52-3063-b1ad-abe42955edb5/mzaf_520282131402737225.plus.aac.p.m4a';
 
 const AudioFile: FC = () => {
   const [isPlaying, setIsPlaying] = useState(false);
@@ -22,28 +26,28 @@ const AudioFile: FC = () => {
 
     audioBufferSourceNodeRef.current =
       audioContextRef.current.createBufferSource();
-    audioBufferSourceNodeRef.current.buffer;
+
     audioBufferSourceNodeRef.current.connect(
       audioContextRef.current.destination
     );
   };
 
-  const fetchAudioBuffer = async () => {
+  const fetchAudioBuffer = useCallback(async () => {
     if (!audioContextRef.current) {
       audioContextRef.current = new AudioContext();
     }
 
-    setAudioBuffer(
-      // audioContextRef.current.decodeAudioDataSource(
-      //   '/Users/maciejmakowski/projects/react-native-audio-api/apps/common-app/src/examples/AudioFile/runaway_kanye_west.mp3'
-      // )
-      audioContextRef.current.decodeAudioDataSource(
-        'https://audio-ssl.itunes.apple.com/apple-assets-us-std-000001/AudioPreview18/v4/9c/db/54/9cdb54b3-5c52-3063-b1ad-abe42955edb5/mzaf_520282131402737225.plus.aac.p.m4a'
-      )
-    );
-  };
+    const buffer =
+      await audioContextRef.current.decodeAudioDataSource(assetUrl);
+
+    setAudioBuffer(buffer);
+  }, []);
 
   const handlePress = () => {
+    if (!audioBuffer) {
+      return;
+    }
+
     if (isPlaying) {
       audioBufferSourceNodeRef.current?.stop();
     } else {
@@ -65,11 +69,12 @@ const AudioFile: FC = () => {
     return () => {
       audioContextRef.current?.close();
     };
-  }, []);
+  }, [fetchAudioBuffer]);
 
   return (
     <Container centered>
       <Button title={isPlaying ? 'Stop' : 'Play'} onPress={handlePress} />
+      {!audioBuffer && <ActivityIndicator color="#FFFFFF" />}
     </Container>
   );
 };
diff --git a/apps/fabric-example/ios/Podfile.lock b/apps/fabric-example/ios/Podfile.lock
index 3543d9b3..4944dd17 100644
--- a/apps/fabric-example/ios/Podfile.lock
+++ b/apps/fabric-example/ios/Podfile.lock
@@ -2063,8 +2063,8 @@ SPEC CHECKSUMS:
   RNReanimated: 77242c6d67416988a2fd9f5cf574bb3e60016362
   RNScreens: e389d6a6a66a4f0d3662924ecae803073ccce8ec
   SocketRocket: d4aabe649be1e368d1318fdf28a022d714d65748
-  Yoga: f8ec45ce98bba1bc93dd28f2ee37215180e6d2b6
+  Yoga: 1d66db49f38fd9e576a1d7c3b081e46ab4c28b9e
 
 PODFILE CHECKSUM: 75ad38075e71875257a2590065853ea6a608b897
 
-COCOAPODS: 1.15.2
+COCOAPODS: 1.16.2
diff --git a/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.cpp b/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.cpp
index 14e1f91f..0d8bf874 100644
--- a/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.cpp
+++ b/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.cpp
@@ -4,8 +4,10 @@ namespace audioapi {
 using namespace facebook;
 
 AudioAPIInstallerHostObject::AudioAPIInstallerHostObject(
-    const std::shared_ptr<AudioAPIInstallerWrapper> &wrapper)
-    : wrapper_(wrapper) {}
+    const std::shared_ptr<AudioAPIInstallerWrapper> &wrapper, jsi::Runtime* runtime, const std::shared_ptr<facebook::react::CallInvoker> &jsInvoker)
+    : wrapper_(wrapper) {
+      promiseVendor_ = std::make_shared<JsiPromise::PromiseVendor>(runtime, jsInvoker);
+    }
 
 std::vector<jsi::PropNameID> AudioAPIInstallerHostObject::getPropertyNames(
     jsi::Runtime &runtime) {
@@ -32,7 +34,7 @@ jsi::Value AudioAPIInstallerHostObject::get(
             size_t count) -> jsi::Value {
           auto audioContext = wrapper_->createAudioContext();
           auto audioContextHostObject =
-              AudioContextHostObject::createFromWrapper(audioContext);
+              AudioContextHostObject::createFromWrapper(audioContext, promiseVendor_);
           return jsi::Object::createFromHostObject(
               runtime, audioContextHostObject);
         });
diff --git a/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.h b/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.h
index 58511696..bfe8255b 100644
--- a/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.h
+++ b/packages/react-native-audio-api/common/cpp/AudioAPIInstaller/AudioAPIInstallerHostObject.h
@@ -1,12 +1,15 @@
 #pragma once
 
+#include <ReactCommon/CallInvoker.h>
 #include <jsi/jsi.h>
 #include <memory>
 #include <utility>
 #include <vector>
 
+
 #include "AudioAPIInstallerWrapper.h"
 #include "AudioContextHostObject.h"
+#include "JsiPromise.h"
 
 namespace audioapi {
 using namespace facebook;
@@ -16,7 +19,7 @@ class AudioAPIInstallerWrapper;
 class AudioAPIInstallerHostObject : public jsi::HostObject {
  public:
   explicit AudioAPIInstallerHostObject(
-      const std::shared_ptr<AudioAPIInstallerWrapper> &wrapper);
+      const std::shared_ptr<AudioAPIInstallerWrapper> &wrapper, jsi::Runtime* runtime, const std::shared_ptr<react::CallInvoker> &jsInvoker);
 
 #ifdef ANDROID
   static void createAndInstallFromWrapper(
@@ -41,5 +44,6 @@ class AudioAPIInstallerHostObject : public jsi::HostObject {
 
  private:
   std::shared_ptr<AudioAPIInstallerWrapper> wrapper_;
+  std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor_;
 };
 } // namespace audioapi
diff --git a/packages/react-native-audio-api/common/cpp/HostObjects/AudioBufferHostObject.cpp b/packages/react-native-audio-api/common/cpp/HostObjects/AudioBufferHostObject.cpp
index 5272b333..34e5577c 100644
--- a/packages/react-native-audio-api/common/cpp/HostObjects/AudioBufferHostObject.cpp
+++ b/packages/react-native-audio-api/common/cpp/HostObjects/AudioBufferHostObject.cpp
@@ -128,6 +128,12 @@ jsi::Value AudioBufferHostObject::get(
         });
   }
 
+  // `decodeAudioData` is a method that returns a promise to AudioBufferHostObject
+  // It seems that async/await checks for the presence of `then` method on the object
+  if (propName == "then") {
+    return jsi::Value::undefined();
+  }
+
   throw std::runtime_error("Not yet implemented!");
 }
 
diff --git a/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.cpp b/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.cpp
index 0a2cdb51..9a986a3c 100644
--- a/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.cpp
+++ b/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.cpp
@@ -4,8 +4,8 @@ namespace audioapi {
 using namespace facebook;
 
 AudioContextHostObject::AudioContextHostObject(
-    const std::shared_ptr<AudioContextWrapper> &wrapper)
-    : BaseAudioContextHostObject(wrapper) {}
+    const std::shared_ptr<AudioContextWrapper> &wrapper, std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor)
+    : BaseAudioContextHostObject(wrapper, promiseVendor) {}
 
 std::vector<jsi::PropNameID> AudioContextHostObject::getPropertyNames(
     jsi::Runtime &runtime) {
diff --git a/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.h b/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.h
index 37b46d37..fd5038c4 100644
--- a/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.h
+++ b/packages/react-native-audio-api/common/cpp/HostObjects/AudioContextHostObject.h
@@ -4,6 +4,7 @@
 #include <memory>
 #include <vector>
 
+#include"JsiPromise.h"
 #include "AudioContextWrapper.h"
 #include "BaseAudioContextHostObject.h"
 
@@ -13,7 +14,7 @@ using namespace facebook;
 class AudioContextHostObject : public BaseAudioContextHostObject {
  public:
   explicit AudioContextHostObject(
-      const std::shared_ptr<AudioContextWrapper> &wrapper);
+      const std::shared_ptr<AudioContextWrapper> &wrapper, std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor);
 
   jsi::Value get(jsi::Runtime &runtime, const jsi::PropNameID &name) override;
 
@@ -25,8 +26,8 @@ class AudioContextHostObject : public BaseAudioContextHostObject {
   std::vector<jsi::PropNameID> getPropertyNames(jsi::Runtime &rt) override;
 
   static std::shared_ptr<AudioContextHostObject> createFromWrapper(
-      const std::shared_ptr<AudioContextWrapper> &wrapper) {
-    return std::make_shared<AudioContextHostObject>(wrapper);
+      const std::shared_ptr<AudioContextWrapper> &wrapper, std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor) {
+    return std::make_shared<AudioContextHostObject>(wrapper, promiseVendor);
   }
 
  private:
diff --git a/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.cpp b/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.cpp
index aa9a7911..c0adb011 100644
--- a/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.cpp
+++ b/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.cpp
@@ -1,11 +1,13 @@
+#include <thread>
+
 #include "BaseAudioContextHostObject.h"
 
 namespace audioapi {
 using namespace facebook;
 
 BaseAudioContextHostObject::BaseAudioContextHostObject(
-    const std::shared_ptr<BaseAudioContextWrapper> &wrapper)
-    : wrapper_(wrapper) {
+    const std::shared_ptr<BaseAudioContextWrapper> &wrapper, std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor)
+    : wrapper_(wrapper), promiseVendor_(promiseVendor) {
   auto destinationNodeWrapper = wrapper_->getDestination();
   destination_ =
       AudioDestinationNodeHostObject::createFromWrapper(destinationNodeWrapper);
@@ -203,22 +205,25 @@ jsi::Value BaseAudioContextHostObject::get(
   }
 
   if (propName == "decodeAudioDataSource") {
-    return jsi::Function::createFromHostFunction(
-        runtime,
-        propNameId,
-        1,
-        [this](
-            jsi::Runtime &runtime,
-            const jsi::Value &thisValue,
-            const jsi::Value *arguments,
-            size_t count) -> jsi::Value {
-          std::string source = arguments[0].getString(runtime).utf8(runtime);
-          auto buffer = wrapper_->decodeAudioDataSource(source);
-          auto audioBufferHostObject =
-              AudioBufferHostObject::createFromWrapper(buffer);
-          return jsi::Object::createFromHostObject(
-              runtime, audioBufferHostObject);
-        });
+    auto decode = [this](jsi::Runtime& runtime,
+                         const jsi::Value&,
+                         const jsi::Value* arguments,
+                         size_t count) -> jsi::Value {
+      auto sourcePath = arguments[0].getString(runtime).utf8(runtime);
+
+      auto promise = promiseVendor_->createPromise([this, &runtime, sourcePath](std::shared_ptr<JsiPromise::Promise> promise) {
+        std::thread([this, &runtime, sourcePath, promise = std::move(promise)]() {
+          auto results = wrapper_->decodeAudioDataSource(sourcePath);
+          auto audioBufferHostObject = AudioBufferHostObject::createFromWrapper(results);
+
+          promise->resolve(jsi::Object::createFromHostObject(runtime, audioBufferHostObject));
+        }).detach();
+      });
+
+      return promise;
+    };
+
+    return jsi::Function::createFromHostFunction(runtime, propNameId, 1, decode);
   }
 
   throw std::runtime_error("Not yet implemented!");
diff --git a/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.h b/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.h
index e70851bd..fed6d4a3 100644
--- a/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.h
+++ b/packages/react-native-audio-api/common/cpp/HostObjects/BaseAudioContextHostObject.h
@@ -5,6 +5,7 @@
 #include <utility>
 #include <vector>
 
+#include "JsiPromise.h"
 #include "AudioBufferHostObject.h"
 #include "AudioBufferSourceNodeHostObject.h"
 #include "AudioDestinationNodeHostObject.h"
@@ -21,7 +22,7 @@ using namespace facebook;
 class BaseAudioContextHostObject : public jsi::HostObject {
  public:
   explicit BaseAudioContextHostObject(
-      const std::shared_ptr<BaseAudioContextWrapper> &wrapper);
+      const std::shared_ptr<BaseAudioContextWrapper> &wrapper, std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor);
 
   jsi::Value get(jsi::Runtime &runtime, const jsi::PropNameID &name) override;
 
@@ -35,5 +36,6 @@ class BaseAudioContextHostObject : public jsi::HostObject {
  protected:
   std::shared_ptr<BaseAudioContextWrapper> wrapper_;
   std::shared_ptr<AudioDestinationNodeHostObject> destination_;
+  std::shared_ptr<JsiPromise::PromiseVendor> promiseVendor_;
 };
 } // namespace audioapi
diff --git a/packages/react-native-audio-api/common/cpp/utils/JsiPromise.cpp b/packages/react-native-audio-api/common/cpp/utils/JsiPromise.cpp
new file mode 100644
index 00000000..fc968b4a
--- /dev/null
+++ b/packages/react-native-audio-api/common/cpp/utils/JsiPromise.cpp
@@ -0,0 +1,58 @@
+#include "JsiPromise.h"
+
+#include <jsi/jsi.h>
+#include <ReactCommon/CallInvoker.h>
+#include <functional>
+
+namespace JsiPromise {
+
+using namespace facebook;
+
+jsi::Value PromiseVendor::createPromise(std::function<void(std::shared_ptr<Promise>)> func) {
+  if (_runtime == nullptr) {
+    throw new std::runtime_error("Runtime was null!");
+  }
+  auto& runtime = *_runtime;
+  auto callInvoker = _callInvoker;
+
+  // get Promise constructor
+  auto promiseCtor = runtime.global().getPropertyAsFunction(runtime, "Promise");
+
+  // create a "run" function (first Promise arg)
+  auto runPromise = jsi::Function::createFromHostFunction(runtime,
+                                                          jsi::PropNameID::forUtf8(runtime, "runPromise"),
+                                                          2,
+                                                          [callInvoker, func](jsi::Runtime& runtime,
+                                                                              const jsi::Value& thisValue,
+                                                                              const jsi::Value* arguments,
+                                                                              size_t count) -> jsi::Value {
+    auto resolveLocal = arguments[0].asObject(runtime).asFunction(runtime);
+    auto resolve = std::make_shared<jsi::Function>(std::move(resolveLocal));
+    auto rejectLocal = arguments[1].asObject(runtime).asFunction(runtime);
+    auto reject = std::make_shared<jsi::Function>(std::move(rejectLocal));
+
+    auto resolveWrapper = [resolve, &runtime, callInvoker](jsi::Value value) -> void {
+      auto valueShared = std::make_shared<jsi::Value>(std::move(value));
+      callInvoker->invokeAsync([resolve, &runtime, valueShared]() -> void {
+        resolve->call(runtime, *valueShared);
+      });
+    };
+    auto rejectWrapper = [reject, &runtime, callInvoker](const std::string& errorMessage) -> void {
+      auto error = jsi::JSError(runtime, errorMessage);
+      auto errorShared = std::make_shared<jsi::JSError>(error);
+      callInvoker->invokeAsync([reject, &runtime, errorShared]() -> void {
+        reject->call(runtime, errorShared->value());
+      });
+    };
+
+    auto promise = std::make_shared<Promise>(resolveWrapper, rejectWrapper);
+    func(promise);
+
+    return jsi::Value::undefined();
+  });
+
+  // return new Promise((resolve, reject) => ...)
+  return promiseCtor.callAsConstructor(runtime, runPromise);
+}
+
+}
diff --git a/packages/react-native-audio-api/common/cpp/utils/JsiPromise.h b/packages/react-native-audio-api/common/cpp/utils/JsiPromise.h
new file mode 100644
index 00000000..e4b71d71
--- /dev/null
+++ b/packages/react-native-audio-api/common/cpp/utils/JsiPromise.h
@@ -0,0 +1,39 @@
+#pragma once
+
+#include <ReactCommon/CallInvoker.h>
+#include <jsi/jsi.h>
+
+namespace JsiPromise {
+
+using namespace facebook;
+
+class Promise {
+public:
+  Promise(std::function<void(jsi::Value)> resolve, std::function<void(const std::string&)> reject): _resolve(std::move(resolve)), _reject(std::move(reject)) {}
+public:
+  bool isResolved;
+  void resolve(jsi::Value&& value) {
+    _resolve(std::forward<jsi::Value>(value));
+  }
+  void reject(const std::string& errorMessage) {
+    _reject(errorMessage);
+  }
+
+private:
+  std::function<void(jsi::Value)> _resolve;
+  std::function<void(const std::string&)> _reject;
+};
+
+class PromiseVendor {
+public:
+  PromiseVendor(jsi::Runtime* runtime, std::shared_ptr<react::CallInvoker> callInvoker): _runtime(runtime), _callInvoker(callInvoker) {}
+
+public:
+  jsi::Value createPromise(std::function<void(std::shared_ptr<Promise>)> func);
+
+private:
+  jsi::Runtime* _runtime;
+  std::shared_ptr<react::CallInvoker> _callInvoker;
+};
+
+}
diff --git a/packages/react-native-audio-api/common/cpp/wrappers/BaseAudioContextWrapper.cpp b/packages/react-native-audio-api/common/cpp/wrappers/BaseAudioContextWrapper.cpp
index 30f3d4aa..5f6a3ce4 100644
--- a/packages/react-native-audio-api/common/cpp/wrappers/BaseAudioContextWrapper.cpp
+++ b/packages/react-native-audio-api/common/cpp/wrappers/BaseAudioContextWrapper.cpp
@@ -79,4 +79,5 @@ BaseAudioContextWrapper::decodeAudioDataSource(const std::string &source) {
   return std::make_shared<AudioBufferWrapper>(
       context_->decodeAudioDataSource(source));
 }
+
 } // namespace audioapi
diff --git a/packages/react-native-audio-api/ios/AudioAPIModule.mm b/packages/react-native-audio-api/ios/AudioAPIModule.mm
index 5df3d30e..e554e8a9 100644
--- a/packages/react-native-audio-api/ios/AudioAPIModule.mm
+++ b/packages/react-native-audio-api/ios/AudioAPIModule.mm
@@ -1,6 +1,8 @@
 #import "AudioAPIModule.h"
 
+#import <ReactCommon/RCTTurboModule.h>
 #import <React/RCTBridge+Private.h>
+#import <React/RCTBridge.h>
 #import <React/RCTUtils.h>
 #import <jsi/jsi.h>
 
@@ -33,7 +35,7 @@ @implementation AudioAPIModule
   auto &runtime = *jsRuntime;
 
   auto wrapper = std::make_shared<audioapi::AudioAPIInstallerWrapper>();
-  auto hostObject = std::make_shared<audioapi::AudioAPIInstallerHostObject>(wrapper);
+  auto hostObject = std::make_shared<audioapi::AudioAPIInstallerHostObject>(wrapper, jsRuntime, cxxBridge.jsCallInvoker);
   auto object = jsi::Object::createFromHostObject(runtime, hostObject);
   runtime.global().setProperty(runtime, "__AudioAPIInstaller", std::move(object));
 
diff --git a/packages/react-native-audio-api/src/core/BaseAudioContext.ts b/packages/react-native-audio-api/src/core/BaseAudioContext.ts
index 197acd72..96559914 100644
--- a/packages/react-native-audio-api/src/core/BaseAudioContext.ts
+++ b/packages/react-native-audio-api/src/core/BaseAudioContext.ts
@@ -96,9 +96,13 @@ export default class BaseAudioContext {
     );
   }
 
-  decodeAudioDataSource(source: AudioSource | number): AudioBuffer {
-    return new AudioBuffer(
-      this.context.decodeAudioDataSource(resolveAudioSource(source))
+  async decodeAudioDataSource(
+    source: AudioSource | number
+  ): Promise<AudioBuffer> {
+    const buffer = await this.context.decodeAudioDataSource(
+      resolveAudioSource(source)
     );
+
+    return new AudioBuffer(buffer);
   }
 }
diff --git a/packages/react-native-audio-api/src/interfaces.ts b/packages/react-native-audio-api/src/interfaces.ts
index 5144785a..9cd5ac6b 100644
--- a/packages/react-native-audio-api/src/interfaces.ts
+++ b/packages/react-native-audio-api/src/interfaces.ts
@@ -27,7 +27,7 @@ export interface IBaseAudioContext {
     imag: number[],
     disableNormalization: boolean
   ) => IPeriodicWave;
-  decodeAudioDataSource: (source: string) => IAudioBuffer;
+  decodeAudioDataSource: (source: string) => Promise<IAudioBuffer>;
 }
 
 export interface IAudioContext extends IBaseAudioContext {