1 files changed, 84 insertions, 0 deletions

diff --git a/src/core/hle/service/nvflinger/nvflinger.h b/src/core/hle/service/nvflinger/nvflinger.h
new file mode 100644
index 000000000..3126018ad
--- /dev/null
+++ b/src/core/hle/service/nvflinger/nvflinger.h
@@ -0,0 +1,84 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <boost/optional.hpp>
+#include "core/hle/kernel/event.h"
+
+namespace CoreTiming {
+struct EventType;
+}
+
+namespace Service {
+namespace NVFlinger {
+
+class BufferQueue;
+
+struct Layer {
+    Layer(u64 id, std::shared_ptr<BufferQueue> queue);
+    ~Layer() = default;
+
+    u64 id;
+    std::shared_ptr<BufferQueue> buffer_queue;
+};
+
+struct Display {
+    Display(u64 id, std::string name);
+    ~Display() = default;
+
+    u64 id;
+    std::string name;
+
+    std::vector<Layer> layers;
+    Kernel::SharedPtr<Kernel::Event> vsync_event;
+};
+
+class NVFlinger final {
+public:
+    NVFlinger();
+    ~NVFlinger();
+
+    /// Opens the specified display and returns the id.
+    u64 OpenDisplay(const std::string& name);
+
+    /// Creates a layer on the specified display and returns the layer id.
+    u64 CreateLayer(u64 display_id);
+
+    /// Gets the buffer queue id of the specified layer in the specified display.
+    u32 GetBufferQueueId(u64 display_id, u64 layer_id);
+
+    /// Gets the vsync event for the specified display.
+    Kernel::SharedPtr<Kernel::Event> GetVsyncEvent(u64 display_id);
+
+    /// Obtains a buffer queue identified by the id.
+    std::shared_ptr<BufferQueue> GetBufferQueue(u32 id) const;
+
+    /// Performs a composition request to the emulated nvidia GPU and triggers the vsync events when
+    /// finished.
+    void Compose();
+
+private:
+    /// Returns the display identified by the specified id.
+    Display& GetDisplay(u64 display_id);
+
+    /// Returns the layer identified by the specified id in the desired display.
+    Layer& GetLayer(u64 display_id, u64 layer_id);
+
+    std::vector<Display> displays;
+    std::vector<std::shared_ptr<BufferQueue>> buffer_queues;
+
+    /// Id to use for the next layer that is created, this counter is shared among all displays.
+    u64 next_layer_id = 1;
+    /// Id to use for the next buffer queue that is created, this counter is shared among all
+    /// layers.
+    u32 next_buffer_queue_id = 1;
+
+    /// CoreTiming event that handles screen composition.
+    CoreTiming::EventType* composition_event;
+};
+
+} // namespace NVFlinger
+} // namespace Service