mirror of
https://github.com/Ninjdai1/pokeemerald.git
synced 2024-12-27 04:04:17 +01:00
345 lines
10 KiB
C
345 lines
10 KiB
C
// Copyright (c) 2015 YamaArashi
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "global.h"
|
|
#include "gfx.h"
|
|
#include "util.h"
|
|
|
|
#define GET_GBA_PAL_RED(x) (((x) >> 0) & 0x1F)
|
|
#define GET_GBA_PAL_GREEN(x) (((x) >> 5) & 0x1F)
|
|
#define GET_GBA_PAL_BLUE(x) (((x) >> 10) & 0x1F)
|
|
|
|
#define SET_GBA_PAL(r, g, b) (((b) << 10) | ((g) << 5) | (r))
|
|
|
|
#define UPCONVERT_BIT_DEPTH(x) (((x) * 255) / 31)
|
|
|
|
#define DOWNCONVERT_BIT_DEPTH(x) ((x) / 8)
|
|
|
|
static void AdvanceMetatilePosition(int *subTileX, int *subTileY, int *metatileX, int *metatileY, int metatilesWide, int metatileWidth, int metatileHeight)
|
|
{
|
|
(*subTileX)++;
|
|
if (*subTileX == metatileWidth) {
|
|
*subTileX = 0;
|
|
(*subTileY)++;
|
|
if (*subTileY == metatileHeight) {
|
|
*subTileY = 0;
|
|
(*metatileX)++;
|
|
if (*metatileX == metatilesWide) {
|
|
*metatileX = 0;
|
|
(*metatileY)++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ConvertFromTiles1Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = metatilesWide * metatileWidth;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int destY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
int destX = metatileX * metatileWidth + subTileX;
|
|
unsigned char srcPixelOctet = *src++;
|
|
unsigned char *destPixelOctet = &dest[destY * pitch + destX];
|
|
|
|
for (int k = 0; k < 8; k++) {
|
|
*destPixelOctet <<= 1;
|
|
*destPixelOctet |= (srcPixelOctet & 1) ^ invertColors;
|
|
srcPixelOctet >>= 1;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
static void ConvertFromTiles4Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = (metatilesWide * metatileWidth) * 4;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int destY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
|
|
for (int k = 0; k < 4; k++) {
|
|
int destX = (metatileX * metatileWidth + subTileX) * 4 + k;
|
|
unsigned char srcPixelPair = *src++;
|
|
unsigned char leftPixel = srcPixelPair & 0xF;
|
|
unsigned char rightPixel = srcPixelPair >> 4;
|
|
|
|
if (invertColors) {
|
|
leftPixel = 15 - leftPixel;
|
|
rightPixel = 15 - rightPixel;
|
|
}
|
|
|
|
dest[destY * pitch + destX] = (leftPixel << 4) | rightPixel;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
static void ConvertFromTiles8Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = (metatilesWide * metatileWidth) * 8;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int destY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
|
|
for (int k = 0; k < 8; k++) {
|
|
int destX = (metatileX * metatileWidth + subTileX) * 8 + k;
|
|
unsigned char srcPixel = *src++;
|
|
|
|
if (invertColors)
|
|
srcPixel = 255 - srcPixel;
|
|
|
|
dest[destY * pitch + destX] = srcPixel;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
static void ConvertToTiles1Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = metatilesWide * metatileWidth;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int srcY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
int srcX = metatileX * metatileWidth + subTileX;
|
|
unsigned char srcPixelOctet = src[srcY * pitch + srcX];
|
|
unsigned char *destPixelOctet = dest++;
|
|
|
|
for (int k = 0; k < 8; k++) {
|
|
*destPixelOctet <<= 1;
|
|
*destPixelOctet |= (srcPixelOctet & 1) ^ invertColors;
|
|
srcPixelOctet >>= 1;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
static void ConvertToTiles4Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = (metatilesWide * metatileWidth) * 4;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int srcY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
|
|
for (int k = 0; k < 4; k++) {
|
|
int srcX = (metatileX * metatileWidth + subTileX) * 4 + k;
|
|
unsigned char srcPixelPair = src[srcY * pitch + srcX];
|
|
unsigned char leftPixel = srcPixelPair >> 4;
|
|
unsigned char rightPixel = srcPixelPair & 0xF;
|
|
|
|
if (invertColors) {
|
|
leftPixel = 15 - leftPixel;
|
|
rightPixel = 15 - rightPixel;
|
|
}
|
|
|
|
*dest++ = (rightPixel << 4) | leftPixel;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
static void ConvertToTiles8Bpp(unsigned char *src, unsigned char *dest, int numTiles, int metatilesWide, int metatileWidth, int metatileHeight, bool invertColors)
|
|
{
|
|
int subTileX = 0;
|
|
int subTileY = 0;
|
|
int metatileX = 0;
|
|
int metatileY = 0;
|
|
int pitch = (metatilesWide * metatileWidth) * 8;
|
|
|
|
for (int i = 0; i < numTiles; i++) {
|
|
for (int j = 0; j < 8; j++) {
|
|
int srcY = (metatileY * metatileHeight + subTileY) * 8 + j;
|
|
|
|
for (int k = 0; k < 8; k++) {
|
|
int srcX = (metatileX * metatileWidth + subTileX) * 8 + k;
|
|
unsigned char srcPixel = src[srcY * pitch + srcX];
|
|
|
|
if (invertColors)
|
|
srcPixel = 255 - srcPixel;
|
|
|
|
*dest++ = srcPixel;
|
|
}
|
|
}
|
|
|
|
AdvanceMetatilePosition(&subTileX, &subTileY, &metatileX, &metatileY, metatilesWide, metatileWidth, metatileHeight);
|
|
}
|
|
}
|
|
|
|
void ReadImage(char *path, int tilesWidth, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors)
|
|
{
|
|
int tileSize = bitDepth * 8;
|
|
|
|
int fileSize;
|
|
unsigned char *buffer = ReadWholeFile(path, &fileSize);
|
|
|
|
int numTiles = fileSize / tileSize;
|
|
|
|
int tilesHeight = (numTiles + tilesWidth - 1) / tilesWidth;
|
|
|
|
if (tilesWidth % metatileWidth != 0)
|
|
FATAL_ERROR("The width in tiles (%d) isn't a multiple of the specified metatile width (%d)", tilesWidth, metatileWidth);
|
|
|
|
if (tilesHeight % metatileHeight != 0)
|
|
FATAL_ERROR("The height in tiles (%d) isn't a multiple of the specified metatile height (%d)", tilesHeight, metatileHeight);
|
|
|
|
image->width = tilesWidth * 8;
|
|
image->height = tilesHeight * 8;
|
|
image->bitDepth = bitDepth;
|
|
image->pixels = calloc(tilesWidth * tilesHeight, tileSize);
|
|
|
|
if (image->pixels == NULL)
|
|
FATAL_ERROR("Failed to allocate memory for pixels.\n");
|
|
|
|
int metatilesWide = tilesWidth / metatileWidth;
|
|
|
|
switch (bitDepth) {
|
|
case 1:
|
|
ConvertFromTiles1Bpp(buffer, image->pixels, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
case 4:
|
|
ConvertFromTiles4Bpp(buffer, image->pixels, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
case 8:
|
|
ConvertFromTiles8Bpp(buffer, image->pixels, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
}
|
|
|
|
free(buffer);
|
|
}
|
|
|
|
void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors)
|
|
{
|
|
int tileSize = bitDepth * 8;
|
|
|
|
if (image->width % 8 != 0)
|
|
FATAL_ERROR("The width in pixels (%d) isn't a multiple of 8.\n", image->width);
|
|
|
|
if (image->height % 8 != 0)
|
|
FATAL_ERROR("The height in pixels (%d) isn't a multiple of 8.\n", image->height);
|
|
|
|
int tilesWidth = image->width / 8;
|
|
int tilesHeight = image->height / 8;
|
|
|
|
if (tilesWidth % metatileWidth != 0)
|
|
FATAL_ERROR("The width in tiles (%d) isn't a multiple of the specified metatile width (%d)", tilesWidth, metatileWidth);
|
|
|
|
if (tilesHeight % metatileHeight != 0)
|
|
FATAL_ERROR("The height in tiles (%d) isn't a multiple of the specified metatile height (%d)", tilesHeight, metatileHeight);
|
|
|
|
int maxNumTiles = tilesWidth * tilesHeight;
|
|
|
|
if (numTiles == 0)
|
|
numTiles = maxNumTiles;
|
|
else if (numTiles > maxNumTiles)
|
|
FATAL_ERROR("The specified number of tiles (%d) is greater than the maximum possible value (%d).\n", numTiles, maxNumTiles);
|
|
|
|
int bufferSize = numTiles * tileSize;
|
|
unsigned char *buffer = malloc(bufferSize);
|
|
|
|
if (buffer == NULL)
|
|
FATAL_ERROR("Failed to allocate memory for pixels.\n");
|
|
|
|
int metatilesWide = tilesWidth / metatileWidth;
|
|
|
|
switch (bitDepth) {
|
|
case 1:
|
|
ConvertToTiles1Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
case 4:
|
|
ConvertToTiles4Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
case 8:
|
|
ConvertToTiles8Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
|
|
break;
|
|
}
|
|
|
|
WriteWholeFile(path, buffer, bufferSize);
|
|
|
|
free(buffer);
|
|
}
|
|
|
|
void FreeImage(struct Image *image)
|
|
{
|
|
free(image->pixels);
|
|
image->pixels = NULL;
|
|
}
|
|
|
|
void ReadGbaPalette(char *path, struct Palette *palette)
|
|
{
|
|
int fileSize;
|
|
unsigned char *data = ReadWholeFile(path, &fileSize);
|
|
|
|
if (fileSize % 2 != 0)
|
|
FATAL_ERROR("The file size (%d) is not a multiple of 2.\n", fileSize);
|
|
|
|
palette->numColors = fileSize / 2;
|
|
|
|
for (int i = 0; i < palette->numColors; i++) {
|
|
uint16_t paletteEntry = (data[i * 2 + 1] << 8) | data[i * 2];
|
|
palette->colors[i].red = UPCONVERT_BIT_DEPTH(GET_GBA_PAL_RED(paletteEntry));
|
|
palette->colors[i].green = UPCONVERT_BIT_DEPTH(GET_GBA_PAL_GREEN(paletteEntry));
|
|
palette->colors[i].blue = UPCONVERT_BIT_DEPTH(GET_GBA_PAL_BLUE(paletteEntry));
|
|
}
|
|
|
|
free(data);
|
|
}
|
|
|
|
void WriteGbaPalette(char *path, struct Palette *palette)
|
|
{
|
|
FILE *fp = fopen(path, "wb");
|
|
|
|
if (fp == NULL)
|
|
FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
|
|
|
|
for (int i = 0; i < palette->numColors; i++) {
|
|
unsigned char red = DOWNCONVERT_BIT_DEPTH(palette->colors[i].red);
|
|
unsigned char green = DOWNCONVERT_BIT_DEPTH(palette->colors[i].green);
|
|
unsigned char blue = DOWNCONVERT_BIT_DEPTH(palette->colors[i].blue);
|
|
|
|
uint16_t paletteEntry = SET_GBA_PAL(red, green, blue);
|
|
|
|
fputc(paletteEntry & 0xFF, fp);
|
|
fputc(paletteEntry >> 8, fp);
|
|
}
|
|
|
|
fclose(fp);
|
|
}
|