From ff1606ffafc636562b39b31cb6515f556754abfd Mon Sep 17 00:00:00 2001
From: Timothy Flynn <trflynn89@pm.me>
Date: Wed, 14 Jun 2023 10:12:46 -0400
Subject: [PATCH] LibWeb: Implement seeking for audio tracks

---
 Userland/Libraries/LibWeb/HTML/AudioTrack.cpp       | 11 +++++++++++
 Userland/Libraries/LibWeb/HTML/AudioTrack.h         |  1 +
 Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp |  7 +++++++
 Userland/Libraries/LibWeb/HTML/HTMLAudioElement.h   |  1 +
 4 files changed, 20 insertions(+)

diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp b/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
index c816be4490..9f6db1f22f 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
@@ -89,6 +89,17 @@ Duration AudioTrack::duration() const
     return Duration::from_milliseconds(static_cast<i64>(duration * 1000.0));
 }
 
+void AudioTrack::seek(double position, MediaSeekMode seek_mode)
+{
+    // FIXME: Implement seeking mode.
+    (void)seek_mode;
+
+    auto duration = static_cast<double>(this->duration().to_milliseconds()) / 1000.0;
+    position = position / duration * static_cast<double>(m_loader->total_samples());
+
+    m_loader->seek(position).release_value_but_fixme_should_propagate_errors();
+}
+
 void AudioTrack::visit_edges(Cell::Visitor& visitor)
 {
     Base::visit_edges(visitor);
diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrack.h b/Userland/Libraries/LibWeb/HTML/AudioTrack.h
index 82efba881a..844b579ad1 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrack.h
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrack.h
@@ -26,6 +26,7 @@ public:
 
     Duration position() const;
     Duration duration() const;
+    void seek(double, MediaSeekMode);
 
     String const& id() const { return m_id; }
     String const& kind() const { return m_kind; }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
index 2c4d6e0357..b2bb0ba0a2 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
@@ -56,4 +56,11 @@ void HTMLAudioElement::on_paused()
     });
 }
 
+void HTMLAudioElement::on_seek(double position, MediaSeekMode seek_mode)
+{
+    audio_tracks()->for_each_enabled_track([&](auto& audio_track) {
+        audio_track.seek(position, seek_mode);
+    });
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.h b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.h
index b383e1a609..08d0c92153 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.h
@@ -28,6 +28,7 @@ private:
 
     virtual void on_playing() override;
     virtual void on_paused() override;
+    virtual void on_seek(double, MediaSeekMode) override;
 };
 
 }