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