From 452ffa56dc431266ee6b46c4d1991ea0518154c2 Mon Sep 17 00:00:00 2001
From: Shannon Booth <shannon@serenityos.org>
Date: Sun, 5 May 2024 11:18:02 +1200
Subject: [PATCH] LibWeb: Implement BaseAudioContext.createDynamicsCompressor

---
 .../expected/WebAudio/DynamicsCompressorNode.txt |  4 ++++
 .../input/WebAudio/DynamicsCompressorNode.html   | 16 ++++++++++++++++
 .../LibWeb/WebAudio/BaseAudioContext.cpp         |  8 ++++++++
 .../Libraries/LibWeb/WebAudio/BaseAudioContext.h |  1 +
 .../LibWeb/WebAudio/BaseAudioContext.idl         |  3 ++-
 5 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 Tests/LibWeb/Text/expected/WebAudio/DynamicsCompressorNode.txt
 create mode 100644 Tests/LibWeb/Text/input/WebAudio/DynamicsCompressorNode.html

diff --git a/Tests/LibWeb/Text/expected/WebAudio/DynamicsCompressorNode.txt b/Tests/LibWeb/Text/expected/WebAudio/DynamicsCompressorNode.txt
new file mode 100644
index 00000000000..72ad4f051c3
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/WebAudio/DynamicsCompressorNode.txt
@@ -0,0 +1,4 @@
+DynamicsCompressorNode
+AudioNode
+EventTarget
+Object
diff --git a/Tests/LibWeb/Text/input/WebAudio/DynamicsCompressorNode.html b/Tests/LibWeb/Text/input/WebAudio/DynamicsCompressorNode.html
new file mode 100644
index 00000000000..2b3385e0612
--- /dev/null
+++ b/Tests/LibWeb/Text/input/WebAudio/DynamicsCompressorNode.html
@@ -0,0 +1,16 @@
+<script src="../include.js"></script>
+<script>
+    test(() => {
+        const audioContext = new OfflineAudioContext(1, 5000, 44100);
+
+        const compressor = audioContext.createDynamicsCompressor();
+
+        // Check prototype
+        let prototype = Object.getPrototypeOf(compressor);
+
+        while (prototype) {
+            println(prototype.constructor.name);
+            prototype = Object.getPrototypeOf(prototype);
+        }
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
index 8b3cae4f6d0..60b01e66487 100644
--- a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
+++ b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
@@ -9,6 +9,7 @@
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/HTML/EventNames.h>
 #include <LibWeb/WebAudio/BaseAudioContext.h>
+#include <LibWeb/WebAudio/DynamicsCompressorNode.h>
 #include <LibWeb/WebAudio/OscillatorNode.h>
 
 namespace Web::WebAudio {
@@ -44,6 +45,13 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<OscillatorNode>> BaseAudioContext::create_o
     return OscillatorNode::create(realm(), *this);
 }
 
+// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createdynamicscompressor
+WebIDL::ExceptionOr<JS::NonnullGCPtr<DynamicsCompressorNode>> BaseAudioContext::create_dynamics_compressor()
+{
+    // Factory method for a DynamicsCompressorNode.
+    return DynamicsCompressorNode::create(realm(), *this);
+}
+
 // https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffer
 WebIDL::ExceptionOr<void> BaseAudioContext::verify_audio_options_inside_nominal_range(JS::Realm& realm, WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate)
 {
diff --git a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.h b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.h
index fab80d0c9ca..8fd395a75c7 100644
--- a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.h
+++ b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.h
@@ -48,6 +48,7 @@ public:
     static WebIDL::ExceptionOr<void> verify_audio_options_inside_nominal_range(JS::Realm&, WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate);
 
     WebIDL::ExceptionOr<JS::NonnullGCPtr<OscillatorNode>> create_oscillator();
+    WebIDL::ExceptionOr<JS::NonnullGCPtr<DynamicsCompressorNode>> create_dynamics_compressor();
 
 protected:
     explicit BaseAudioContext(JS::Realm&, float m_sample_rate = 0);
diff --git a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.idl b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.idl
index 22929aa13dc..a52ac7b5c7e 100644
--- a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.idl
+++ b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.idl
@@ -1,5 +1,6 @@
 #import <DOM/EventTarget.idl>
 #import <DOM/EventHandler.idl>
+#import <WebAudio/DynamicsCompressorNode.idl>
 #import <WebAudio/OscillatorNode.idl>
 
 // https://www.w3.org/TR/webaudio/#enumdef-audiocontextstate
@@ -30,7 +31,7 @@ interface BaseAudioContext : EventTarget {
     // FIXME: ConstantSourceNode createConstantSource ();
     // FIXME: ConvolverNode createConvolver ();
     // FIXME: DelayNode createDelay (optional double maxDelayTime = 1.0);
-    // FIXME: DynamicsCompressorNode createDynamicsCompressor ();
+    DynamicsCompressorNode createDynamicsCompressor();
     // FIXME: GainNode createGain ();
     // FIXME: IIRFilterNode createIIRFilter (sequence<double> feedforward, sequence<double> feedback);
     OscillatorNode createOscillator();