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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include <boost/optional.hpp>
#include "common/swap.h"
#include "core/hle/kernel/event.h"
namespace CoreTiming {
struct EventType;
}
namespace Service::NVFlinger {
struct IGBPBuffer {
u32_le magic;
u32_le width;
u32_le height;
u32_le stride;
u32_le format;
u32_le usage;
INSERT_PADDING_WORDS(1);
u32_le index;
INSERT_PADDING_WORDS(3);
u32_le gpu_buffer_id;
INSERT_PADDING_WORDS(17);
u32_le nvmap_handle;
u32_le offset;
INSERT_PADDING_WORDS(60);
};
static_assert(sizeof(IGBPBuffer) == 0x16C, "IGBPBuffer has wrong size");
class BufferQueue final {
public:
enum class QueryType {
NativeWindowWidth = 0,
NativeWindowHeight = 1,
NativeWindowFormat = 2,
};
BufferQueue(u32 id, u64 layer_id);
~BufferQueue() = default;
enum class BufferTransformFlags : u32 {
/// No transform flags are set
Unset = 0x00,
/// Flip source image horizontally (around the vertical axis)
FlipH = 0x01,
/// Flip source image vertically (around the horizontal axis)
FlipV = 0x02,
/// Rotate source image 90 degrees clockwise
Rotate90 = 0x04,
/// Rotate source image 180 degrees
Roate180 = 0x03,
/// Rotate source image 270 degrees clockwise
Roate270 = 0x07,
};
struct Buffer {
enum class Status { Free = 0, Queued = 1, Dequeued = 2, Acquired = 3 };
u32 slot;
Status status = Status::Free;
IGBPBuffer igbp_buffer;
BufferTransformFlags transform;
};
void SetPreallocatedBuffer(u32 slot, IGBPBuffer& buffer);
boost::optional<u32> DequeueBuffer(u32 width, u32 height);
const IGBPBuffer& RequestBuffer(u32 slot) const;
void QueueBuffer(u32 slot, BufferTransformFlags transform);
boost::optional<const Buffer&> AcquireBuffer();
void ReleaseBuffer(u32 slot);
u32 Query(QueryType type);
void SetBufferWaitEvent(Kernel::SharedPtr<Kernel::Event>&& wait_event);
u32 GetId() const {
return id;
}
Kernel::SharedPtr<Kernel::Event> GetNativeHandle() const {
return native_handle;
}
private:
u32 id;
u64 layer_id;
std::vector<Buffer> queue;
Kernel::SharedPtr<Kernel::Event> native_handle;
/// Used to signal waiting thread when no buffers are available
Kernel::SharedPtr<Kernel::Event> buffer_wait_event;
};
} // namespace Service::NVFlinger
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