1 files changed, 65 insertions, 0 deletions
diff --git a/src/core/hle/service/nvnflinger/fb_share_buffer_manager.h b/src/core/hle/service/nvnflinger/fb_share_buffer_manager.h
new file mode 100644
index 000000000..c809c01b4
--- /dev/null
+++ b/src/core/hle/service/nvnflinger/fb_share_buffer_manager.h
@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/math_util.h"
+#include "core/hle/service/nvnflinger/nvnflinger.h"
+#include "core/hle/service/nvnflinger/ui/fence.h"
+
+namespace Kernel {
+class KPageGroup;
+}
+
+namespace Service::Nvnflinger {
+
+struct SharedMemorySlot {
+    u64 buffer_offset;
+    u64 size;
+    s32 width;
+    s32 height;
+};
+static_assert(sizeof(SharedMemorySlot) == 0x18, "SharedMemorySlot has wrong size");
+
+struct SharedMemoryPoolLayout {
+    s32 num_slots;
+    std::array<SharedMemorySlot, 0x10> slots;
+};
+static_assert(sizeof(SharedMemoryPoolLayout) == 0x188, "SharedMemoryPoolLayout has wrong size");
+
+class FbShareBufferManager final {
+public:
+    explicit FbShareBufferManager(Core::System& system, Nvnflinger& flinger,
+                                  std::shared_ptr<Nvidia::Module> nvdrv);
+    ~FbShareBufferManager();
+
+    Result Initialize(u64* out_buffer_id, u64* out_layer_handle, u64 display_id);
+    Result GetSharedBufferMemoryHandleId(u64* out_buffer_size, s32* out_nvmap_handle,
+                                         SharedMemoryPoolLayout* out_pool_layout, u64 buffer_id,
+                                         u64 applet_resource_user_id);
+    Result AcquireSharedFrameBuffer(android::Fence* out_fence, std::array<s32, 4>& out_slots,
+                                    s64* out_target_slot, u64 layer_id);
+    Result PresentSharedFrameBuffer(android::Fence fence, Common::Rectangle<s32> crop_region,
+                                    u32 transform, s32 swap_interval, u64 layer_id, s64 slot);
+    Result GetSharedFrameBufferAcquirableEvent(Kernel::KReadableEvent** out_event, u64 layer_id);
+
+private:
+    Result GetLayerFromId(VI::Layer** out_layer, u64 layer_id);
+
+private:
+    u64 m_next_buffer_id = 1;
+    u64 m_display_id = 0;
+    u64 m_buffer_id = 0;
+    u64 m_layer_id = 0;
+    u32 m_buffer_nvmap_handle = 0;
+    SharedMemoryPoolLayout m_pool_layout = {};
+
+    std::unique_ptr<Kernel::KPageGroup> m_buffer_page_group;
+
+    std::mutex m_guard;
+    Core::System& m_system;
+    Nvnflinger& m_flinger;
+    std::shared_ptr<Nvidia::Module> m_nvdrv;
+};
+
+} // namespace Service::Nvnflinger