mirror of
https://github.com/Dark98/threeSD.git
synced 2026-07-03 08:39:04 +00:00
Pengfei
113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
// Copyright 2016 Citra Emulator Project / 2019 threeSD Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <cstring>
|
|
#include <vector>
|
|
#include "common/common_funcs.h"
|
|
#include "common/common_types.h"
|
|
#include "core/ncch/smdh.h"
|
|
|
|
namespace Core {
|
|
|
|
// 8x8 Z-Order coordinate from 2D coordinates
|
|
static constexpr u32 MortonInterleave(u32 x, u32 y) {
|
|
constexpr u32 xlut[] = {0x00, 0x01, 0x04, 0x05, 0x10, 0x11, 0x14, 0x15};
|
|
constexpr u32 ylut[] = {0x00, 0x02, 0x08, 0x0a, 0x20, 0x22, 0x28, 0x2a};
|
|
return xlut[x % 8] + ylut[y % 8];
|
|
}
|
|
|
|
/**
|
|
* Calculates the offset of the position of the pixel in Morton order
|
|
*/
|
|
static inline u32 GetMortonOffset(u32 x, u32 y, u32 bytes_per_pixel) {
|
|
// Images are split into 8x8 tiles. Each tile is composed of four 4x4 subtiles each
|
|
// of which is composed of four 2x2 subtiles each of which is composed of four texels.
|
|
// Each structure is embedded into the next-bigger one in a diagonal pattern, e.g.
|
|
// texels are laid out in a 2x2 subtile like this:
|
|
// 2 3
|
|
// 0 1
|
|
//
|
|
// The full 8x8 tile has the texels arranged like this:
|
|
//
|
|
// 42 43 46 47 58 59 62 63
|
|
// 40 41 44 45 56 57 60 61
|
|
// 34 35 38 39 50 51 54 55
|
|
// 32 33 36 37 48 49 52 53
|
|
// 10 11 14 15 26 27 30 31
|
|
// 08 09 12 13 24 25 28 29
|
|
// 02 03 06 07 18 19 22 23
|
|
// 00 01 04 05 16 17 20 21
|
|
//
|
|
// This pattern is what's called Z-order curve, or Morton order.
|
|
|
|
const unsigned int block_height = 8;
|
|
const unsigned int coarse_x = x & ~7;
|
|
|
|
u32 i = MortonInterleave(x, y);
|
|
|
|
const unsigned int offset = coarse_x * block_height;
|
|
|
|
return (i + offset) * bytes_per_pixel;
|
|
}
|
|
|
|
bool IsValidSMDH(const std::vector<u8>& smdh_data) {
|
|
if (smdh_data.size() < sizeof(Core::SMDH))
|
|
return false;
|
|
|
|
u32 magic;
|
|
memcpy(&magic, smdh_data.data(), sizeof(u32));
|
|
|
|
return MakeMagic('S', 'M', 'D', 'H') == magic;
|
|
}
|
|
|
|
std::vector<u16> SMDH::GetIcon(bool large) const {
|
|
u32 size;
|
|
const u8* icon_data;
|
|
|
|
if (large) {
|
|
size = 48;
|
|
icon_data = large_icon.data();
|
|
} else {
|
|
size = 24;
|
|
icon_data = small_icon.data();
|
|
}
|
|
|
|
std::vector<u16> icon(size * size);
|
|
for (u32 x = 0; x < size; ++x) {
|
|
for (u32 y = 0; y < size; ++y) {
|
|
u32 coarse_y = y & ~7;
|
|
const u8* pixel = icon_data + GetMortonOffset(x, y, 2) + coarse_y * size * 2;
|
|
icon[x + size * y] = (pixel[1] << 8) + pixel[0];
|
|
}
|
|
}
|
|
return icon;
|
|
}
|
|
|
|
std::array<u16, 0x40> SMDH::GetShortTitle(Core::SMDH::TitleLanguage language) const {
|
|
return titles[static_cast<int>(language)].short_title;
|
|
}
|
|
|
|
std::string SMDH::GetRegionString() const {
|
|
constexpr u32 REGION_COUNT = 7;
|
|
|
|
// JPN/USA/EUR/Australia/CHN/KOR/TWN
|
|
// Australia does not have a symbol because it's practically the same as Europe
|
|
static const std::array<std::string, REGION_COUNT> RegionSymbols{
|
|
{"J", "U", "E", "", "C", "K", "T"}};
|
|
|
|
std::string region_string;
|
|
for (u32 region = 0; region < REGION_COUNT; ++region) {
|
|
if (region_lockout & (1 << region)) {
|
|
region_string.append(RegionSymbols[region]);
|
|
}
|
|
}
|
|
|
|
if (region_string == "JUECKT") {
|
|
return "W";
|
|
}
|
|
return region_string;
|
|
}
|
|
|
|
} // namespace Core
|