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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 <condition_variable>
#include <list>
#include <mutex>
#include <optional>
#include <vector>
#include "common/common_funcs.h"
#include "common/math_util.h"
#include "common/swap.h"
#include "core/hle/kernel/k_readable_event.h"
#include "core/hle/kernel/object.h"
#include "core/hle/service/nvdrv/nvdata.h"
namespace Kernel {
class KernelCore;
class KEvent;
class KReadableEvent;
class KWritableEvent;
} // namespace Kernel
namespace Service::NVFlinger {
constexpr u32 buffer_slots = 0x40;
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,
};
explicit BufferQueue(Kernel::KernelCore& kernel, u32 id, u64 layer_id);
~BufferQueue();
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
Rotate180 = 0x03,
/// Rotate source image 270 degrees clockwise
Rotate270 = 0x07,
};
enum class PixelFormat : u32 {
RGBA8888 = 1,
RGBX8888 = 2,
RGB888 = 3,
RGB565 = 4,
BGRA8888 = 5,
RGBA5551 = 6,
RRGBA4444 = 7,
};
struct Buffer {
enum class Status { Free = 0, Queued = 1, Dequeued = 2, Acquired = 3 };
u32 slot;
Status status = Status::Free;
IGBPBuffer igbp_buffer;
BufferTransformFlags transform;
Common::Rectangle<int> crop_rect;
u32 swap_interval;
Service::Nvidia::MultiFence multi_fence;
};
void SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer);
std::optional<std::pair<u32, Service::Nvidia::MultiFence*>> DequeueBuffer(u32 width,
u32 height);
const IGBPBuffer& RequestBuffer(u32 slot) const;
void QueueBuffer(u32 slot, BufferTransformFlags transform,
const Common::Rectangle<int>& crop_rect, u32 swap_interval,
Service::Nvidia::MultiFence& multi_fence);
void CancelBuffer(u32 slot, const Service::Nvidia::MultiFence& multi_fence);
std::optional<std::reference_wrapper<const Buffer>> AcquireBuffer();
void ReleaseBuffer(u32 slot);
void Connect();
void Disconnect();
u32 Query(QueryType type);
u32 GetId() const {
return id;
}
bool IsConnected() const {
return is_connect;
}
std::shared_ptr<Kernel::KWritableEvent> GetWritableBufferWaitEvent() const;
std::shared_ptr<Kernel::KReadableEvent> GetBufferWaitEvent() const;
private:
BufferQueue(const BufferQueue&) = delete;
u32 id{};
u64 layer_id{};
std::atomic_bool is_connect{};
std::list<u32> free_buffers;
std::array<Buffer, buffer_slots> buffers;
std::list<u32> queue_sequence;
std::shared_ptr<Kernel::KEvent> buffer_wait_event;
std::mutex free_buffers_mutex;
std::condition_variable free_buffers_condition;
std::mutex queue_sequence_mutex;
};
} // namespace Service::NVFlinger
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