1 files changed, 60 insertions, 0 deletions
diff --git a/src/audio_core/adsp/mailbox.h b/src/audio_core/adsp/mailbox.h
new file mode 100644
index 000000000..1dd40ebfa
--- /dev/null
+++ b/src/audio_core/adsp/mailbox.h
@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "common/bounded_threadsafe_queue.h"
+#include "common/common_types.h"
+
+namespace AudioCore::ADSP {
+
+enum class AppMailboxId : u32 {
+    Invalid = 0,
+    AudioRenderer = 50,
+    AudioRendererMemoryMapUnmap = 51,
+};
+
+enum class Direction : u32 {
+    Host,
+    DSP,
+};
+
+class Mailbox {
+public:
+    void Initialize(AppMailboxId id_) {
+        Reset();
+        id = id_;
+    }
+
+    AppMailboxId Id() const noexcept {
+        return id;
+    }
+
+    void Send(Direction dir, u32 message) {
+        auto& queue = dir == Direction::Host ? host_queue : adsp_queue;
+        queue.EmplaceWait(message);
+    }
+
+    u32 Receive(Direction dir, std::stop_token stop_token = {}) {
+        auto& queue = dir == Direction::Host ? host_queue : adsp_queue;
+        return queue.PopWait(stop_token);
+    }
+
+    void Reset() {
+        id = AppMailboxId::Invalid;
+        u32 t{};
+        while (host_queue.TryPop(t)) {
+        }
+        while (adsp_queue.TryPop(t)) {
+        }
+    }
+
+private:
+    AppMailboxId id{0};
+    Common::SPSCQueue<u32> host_queue;
+    Common::SPSCQueue<u32> adsp_queue;
+};
+
+} // namespace AudioCore::ADSP