From a98de0b6eea3e5671ad767a6b6f434232f1b7a17 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Wed, 4 Sep 2019 20:12:24 +0200
Subject: [PATCH] LibAudio: Add AClientConnetion::try_enqueue() API

This is a variant of the enqueue() API that returns immediately and
may fail. It's useful when you don't want to block until the audio
server can receive your sample buffer.
---
 Libraries/LibAudio/AClientConnection.cpp | 7 +++++++
 Libraries/LibAudio/AClientConnection.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/Libraries/LibAudio/AClientConnection.cpp b/Libraries/LibAudio/AClientConnection.cpp
index 3cd78c0aa8..3d9c46405d 100644
--- a/Libraries/LibAudio/AClientConnection.cpp
+++ b/Libraries/LibAudio/AClientConnection.cpp
@@ -25,6 +25,13 @@ void AClientConnection::enqueue(const ABuffer& buffer)
     }
 }
 
+bool AClientConnection::try_enqueue(const ABuffer& buffer)
+{
+    const_cast<ABuffer&>(buffer).shared_buffer().share_with(server_pid());
+    auto response = send_sync<AudioServer::EnqueueBuffer>(buffer.shared_buffer_id());
+    return response->success();
+}
+
 int AClientConnection::get_main_mix_volume()
 {
     return send_sync<AudioServer::GetMainMixVolume>()->volume();
diff --git a/Libraries/LibAudio/AClientConnection.h b/Libraries/LibAudio/AClientConnection.h
index 1978a7f00d..95e406fd20 100644
--- a/Libraries/LibAudio/AClientConnection.h
+++ b/Libraries/LibAudio/AClientConnection.h
@@ -12,6 +12,7 @@ public:
 
     virtual void handshake() override;
     void enqueue(const ABuffer&);
+    bool try_enqueue(const ABuffer&);
 
     int get_main_mix_volume();
     void set_main_mix_volume(int);