tumbledemerald-legacy/tools/gbagfx/font.c
2022-05-19 17:14:13 +00:00

327 lines
9.2 KiB
C

// Copyright (c) 2015 YamaArashi
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include "global.h"
#include "font.h"
#include "gfx.h"
#include "util.h"
unsigned char gFontPalette[][3] = {
{0x90, 0xC8, 0xFF}, // bg (saturated blue that contrasts well with the shadow color)
{0x38, 0x38, 0x38}, // fg (dark grey)
{0xD8, 0xD8, 0xD8}, // shadow (light grey)
{0xFF, 0xFF, 0xFF} // box (white)
};
static void ConvertFromLatinFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
unsigned int srcPixelsOffset = 0;
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
for (unsigned int glyphTile = 0; glyphTile < 4; glyphTile++) {
unsigned int pixelsX = (column * 16) + ((glyphTile & 1) * 8);
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + ((glyphTile >> 1) * 8) + i;
unsigned int destPixelsOffset = (pixelsY * 64) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
srcPixelsOffset += 2;
}
}
}
}
}
static void ConvertToLatinFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
unsigned int destPixelsOffset = 0;
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
for (unsigned int glyphTile = 0; glyphTile < 4; glyphTile++) {
unsigned int pixelsX = (column * 16) + ((glyphTile & 1) * 8);
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + ((glyphTile >> 1) * 8) + i;
unsigned int srcPixelsOffset = (pixelsY * 64) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
destPixelsOffset += 2;
}
}
}
}
}
static void ConvertFromHalfwidthJapaneseFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
unsigned int glyphIndex = (row * 16) + column;
for (unsigned int glyphTile = 0; glyphTile < 2; glyphTile++) {
unsigned int pixelsX = column * 8;
unsigned int srcPixelsOffset = 512 * (glyphIndex >> 4) + 16 * (glyphIndex & 0xF) + 256 * glyphTile;
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + (glyphTile * 8) + i;
unsigned int destPixelsOffset = (pixelsY * 32) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
srcPixelsOffset += 2;
}
}
}
}
}
static void ConvertToHalfwidthJapaneseFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
unsigned int glyphIndex = (row * 16) + column;
for (unsigned int glyphTile = 0; glyphTile < 2; glyphTile++) {
unsigned int pixelsX = column * 8;
unsigned int destPixelsOffset = 512 * (glyphIndex >> 4) + 16 * (glyphIndex & 0xF) + 256 * glyphTile;
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + (glyphTile * 8) + i;
unsigned int srcPixelsOffset = (pixelsY * 32) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
destPixelsOffset += 2;
}
}
}
}
}
static void ConvertFromFullwidthJapaneseFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
unsigned int glyphIndex = (row * 16) + column;
for (unsigned int glyphTile = 0; glyphTile < 4; glyphTile++) {
unsigned int pixelsX = (column * 16) + ((glyphTile & 1) * 8);
unsigned int srcPixelsOffset = 512 * (glyphIndex >> 3) + 32 * (glyphIndex & 7) + 256 * (glyphTile >> 1) + 16 * (glyphTile & 1);
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + ((glyphTile >> 1) * 8) + i;
unsigned int destPixelsOffset = (pixelsY * 64) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
srcPixelsOffset += 2;
}
}
}
}
}
static void ConvertToFullwidthJapaneseFont(unsigned char *src, unsigned char *dest, unsigned int numRows)
{
for (unsigned int row = 0; row < numRows; row++) {
for (unsigned int column = 0; column < 16; column++) {
unsigned int glyphIndex = (row * 16) + column;
for (unsigned int glyphTile = 0; glyphTile < 4; glyphTile++) {
unsigned int pixelsX = (column * 16) + ((glyphTile & 1) * 8);
unsigned int destPixelsOffset = 512 * (glyphIndex >> 3) + 32 * (glyphIndex & 7) + 256 * (glyphTile >> 1) + 16 * (glyphTile & 1);
for (unsigned int i = 0; i < 8; i++) {
unsigned int pixelsY = (row * 16) + ((glyphTile >> 1) * 8) + i;
unsigned int srcPixelsOffset = (pixelsY * 64) + (pixelsX / 4);
dest[destPixelsOffset] = src[srcPixelsOffset + 1];
dest[destPixelsOffset + 1] = src[srcPixelsOffset];
destPixelsOffset += 2;
}
}
}
}
}
static void SetFontPalette(struct Image *image)
{
image->hasPalette = true;
image->palette.numColors = 4;
for (int i = 0; i < image->palette.numColors; i++) {
image->palette.colors[i].red = gFontPalette[i][0];
image->palette.colors[i].green = gFontPalette[i][1];
image->palette.colors[i].blue = gFontPalette[i][2];
}
image->hasTransparency = false;
}
void ReadLatinFont(char *path, struct Image *image)
{
int fileSize;
unsigned char *buffer = ReadWholeFile(path, &fileSize);
int numGlyphs = fileSize / 64;
if (numGlyphs % 16 != 0)
FATAL_ERROR("The number of glyphs (%d) is not a multiple of 16.\n", numGlyphs);
int numRows = numGlyphs / 16;
image->width = 256;
image->height = numRows * 16;
image->bitDepth = 2;
image->pixels = malloc(fileSize);
if (image->pixels == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertFromLatinFont(buffer, image->pixels, numRows);
free(buffer);
SetFontPalette(image);
}
void WriteLatinFont(char *path, struct Image *image)
{
if (image->width != 256)
FATAL_ERROR("The width of the font image (%d) is not 256.\n", image->width);
if (image->height % 16 != 0)
FATAL_ERROR("The height of the font image (%d) is not a multiple of 16.\n", image->height);
int numRows = image->height / 16;
int bufferSize = numRows * 16 * 64;
unsigned char *buffer = malloc(bufferSize);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertToLatinFont(image->pixels, buffer, numRows);
WriteWholeFile(path, buffer, bufferSize);
free(buffer);
}
void ReadHalfwidthJapaneseFont(char *path, struct Image *image)
{
int fileSize;
unsigned char *buffer = ReadWholeFile(path, &fileSize);
int glyphSize = 32;
if (fileSize % glyphSize != 0)
FATAL_ERROR("The file size (%d) is not a multiple of %d.\n", fileSize, glyphSize);
int numGlyphs = fileSize / glyphSize;
if (numGlyphs % 16 != 0)
FATAL_ERROR("The number of glyphs (%d) is not a multiple of 16.\n", numGlyphs);
int numRows = numGlyphs / 16;
image->width = 128;
image->height = numRows * 16;
image->bitDepth = 2;
image->pixels = malloc(fileSize);
if (image->pixels == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertFromHalfwidthJapaneseFont(buffer, image->pixels, numRows);
free(buffer);
SetFontPalette(image);
}
void WriteHalfwidthJapaneseFont(char *path, struct Image *image)
{
if (image->width != 128)
FATAL_ERROR("The width of the font image (%d) is not 128.\n", image->width);
if (image->height % 16 != 0)
FATAL_ERROR("The height of the font image (%d) is not a multiple of 16.\n", image->height);
int numRows = image->height / 16;
int bufferSize = numRows * 16 * 32;
unsigned char *buffer = malloc(bufferSize);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertToHalfwidthJapaneseFont(image->pixels, buffer, numRows);
WriteWholeFile(path, buffer, bufferSize);
free(buffer);
}
void ReadFullwidthJapaneseFont(char *path, struct Image *image)
{
int fileSize;
unsigned char *buffer = ReadWholeFile(path, &fileSize);
int numGlyphs = fileSize / 64;
if (numGlyphs % 16 != 0)
FATAL_ERROR("The number of glyphs (%d) is not a multiple of 16.\n", numGlyphs);
int numRows = numGlyphs / 16;
image->width = 256;
image->height = numRows * 16;
image->bitDepth = 2;
image->pixels = malloc(fileSize);
if (image->pixels == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertFromFullwidthJapaneseFont(buffer, image->pixels, numRows);
free(buffer);
SetFontPalette(image);
}
void WriteFullwidthJapaneseFont(char *path, struct Image *image)
{
if (image->width != 256)
FATAL_ERROR("The width of the font image (%d) is not 256.\n", image->width);
if (image->height % 16 != 0)
FATAL_ERROR("The height of the font image (%d) is not a multiple of 16.\n", image->height);
int numRows = image->height / 16;
int bufferSize = numRows * 16 * 64;
unsigned char *buffer = malloc(bufferSize);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for font.\n");
ConvertToFullwidthJapaneseFont(image->pixels, buffer, numRows);
WriteWholeFile(path, buffer, bufferSize);
free(buffer);
}