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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <string>
#include "common/common_types.h"
#include "core/hle/result.h"
#include "core/hle/service/service.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace Y2R_U
namespace Y2R_U {
enum class InputFormat : u8 {
/// 8-bit input, with YUV components in separate planes and 4:2:2 subsampling.
YUV422_Indiv8 = 0,
/// 8-bit input, with YUV components in separate planes and 4:2:0 subsampling.
YUV420_Indiv8 = 1,
/// 16-bit input (only LSB used), with YUV components in separate planes and 4:2:2 subsampling.
YUV422_Indiv16 = 2,
/// 16-bit input (only LSB used), with YUV components in separate planes and 4:2:0 subsampling.
YUV420_Indiv16 = 3,
/// 8-bit input, with a single interleaved stream in YUYV format and 4:2:2 subsampling.
YUYV422_Interleaved = 4,
};
enum class OutputFormat : u8 {
RGBA8 = 0,
RGB8 = 1,
RGB5A1 = 2,
RGB565 = 3,
};
enum class Rotation : u8 {
None = 0,
Clockwise_90 = 1,
Clockwise_180 = 2,
Clockwise_270 = 3,
};
enum class BlockAlignment : u8 {
/// Image is output in linear format suitable for use as a framebuffer.
Linear = 0,
/// Image is output in tiled PICA format, suitable for use as a texture.
Block8x8 = 1,
};
enum class StandardCoefficient : u8 {
/// ITU Rec. BT.601 primaries, with PC ranges.
ITU_Rec601 = 0,
/// ITU Rec. BT.709 primaries, with PC ranges.
ITU_Rec709 = 1,
/// ITU Rec. BT.601 primaries, with TV ranges.
ITU_Rec601_Scaling = 2,
/// ITU Rec. BT.709 primaries, with TV ranges.
ITU_Rec709_Scaling = 3,
};
/**
* A set of coefficients configuring the RGB to YUV conversion. Coefficients 0-4 are unsigned 2.8
* fixed pointer numbers representing entries on the conversion matrix, while coefficient 5-7 are
* signed 11.5 fixed point numbers added as offsets to the RGB result.
*
* The overall conversion process formula is:
* ```
* R = trunc((c_0 * Y + c_1 * V) + c_5 + 0.75)
* G = trunc((c_0 * Y - c_3 * U - c_2 * V) + c_6 + 0.75)
* B = trunc((c_0 * Y + c_4 * U ) + c_7 + 0.75)
* ```
*/
using CoefficientSet = std::array<s16, 8>;
struct ConversionBuffer {
/// Current reading/writing address of this buffer.
VAddr address;
/// Remaining amount of bytes to be DMAed, does not include the inter-trasfer gap.
u32 image_size;
/// Size of a single DMA transfer.
u16 transfer_unit;
/// Amount of bytes to be skipped between copying each `transfer_unit` bytes.
u16 gap;
};
struct ConversionConfiguration {
InputFormat input_format;
OutputFormat output_format;
Rotation rotation;
BlockAlignment block_alignment;
u16 input_line_width;
u16 input_lines;
CoefficientSet coefficients;
u16 alpha;
/// Input parameters for the Y (luma) plane
ConversionBuffer src_Y, src_U, src_V, src_YUYV;
/// Output parameters for the conversion results
ConversionBuffer dst;
ResultCode SetInputLineWidth(u16 width);
ResultCode SetInputLines(u16 lines);
ResultCode SetStandardCoefficient(StandardCoefficient standard_coefficient);
};
class Interface : public Service::Interface {
public:
Interface();
~Interface() override;
std::string GetPortName() const override {
return "y2r:u";
}
};
} // namespace
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