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-rw-r--r--tools/gbagfx/gfx.c197
1 files changed, 3 insertions, 194 deletions
diff --git a/tools/gbagfx/gfx.c b/tools/gbagfx/gfx.c
index da92771b9..f927deed9 100644
--- a/tools/gbagfx/gfx.c
+++ b/tools/gbagfx/gfx.c
@@ -4,7 +4,6 @@
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
-#include <string.h>
#include "global.h"
#include "gfx.h"
#include "util.h"
@@ -19,140 +18,6 @@
#define DOWNCONVERT_BIT_DEPTH(x) ((x) / 8)
-static inline void swap_bytes(unsigned char * orig, unsigned char * dest) {
- unsigned char tmp = *orig;
- *orig = *dest;
- *dest = tmp;
-}
-
-static inline unsigned char swap_nybbles(unsigned char orig)
-{
- return (orig >> 4) | (orig << 4);
-}
-
-static inline void swap_bytes_nybswap(unsigned char * orig, unsigned char * dest) {
- unsigned char tmp = swap_nybbles(*orig);
- *orig = swap_nybbles(*dest);
- *dest = tmp;
-}
-
-static inline unsigned char reverse_bits(unsigned char orig) {
- unsigned char dest = 0;
- for (int i = 0; i < 8; i++)
- {
- dest <<= 1;
- dest |= orig & 1;
- orig >>= 1;
- }
- return dest;
-}
-
-static void vflip(unsigned char * tile, int bitDepth) {
- for (int x = 0; x < bitDepth; x++)
- {
- unsigned char * col = tile + x;
- swap_bytes(col + 0 * bitDepth, col + 7 * bitDepth);
- swap_bytes(col + 1 * bitDepth, col + 6 * bitDepth);
- swap_bytes(col + 2 * bitDepth, col + 5 * bitDepth);
- swap_bytes(col + 3 * bitDepth, col + 4 * bitDepth);
- }
-}
-
-static void hflip(unsigned char * tile, int bitDepth) {
- for (int y = 0; y < 8; y++)
- {
- unsigned char * row = tile + y * bitDepth;
- switch (bitDepth)
- {
- case 1:
- *row = reverse_bits(*row);
- break;
- case 4:
- swap_bytes_nybswap(row + 0, row + 3);
- swap_bytes_nybswap(row + 1, row + 2);
- break;
- case 8:
- swap_bytes(row + 0, row + 56);
- swap_bytes(row + 8, row + 48);
- swap_bytes(row + 16, row + 40);
- swap_bytes(row + 24, row + 32);
- break;
- }
- }
-}
-
-static unsigned char * ApplyTilemap(struct Image *image, unsigned char * buffer, int bitDepth)
-{
- int tileSize = bitDepth * 8;
- unsigned char * tiles = calloc(image->tileMap.numTiles, tileSize);
- int i;
- struct Tile tileInfo;
-
- for (i = 0; i < image->tileMap.numTiles; i++) {
- tileInfo = image->tileMap.data[i];
- unsigned char * tile = tiles + i * tileSize;
- memcpy(tile, buffer + tileInfo.index * tileSize, tileSize);
- if (tileInfo.xflip)
- hflip(tile, bitDepth);
- if (tileInfo.yflip)
- vflip(tile, bitDepth);
- }
- free(buffer);
- return tiles;
-}
-
-static unsigned char * BuildTilemap(struct Image *image, unsigned char * buffer, int * bufferSize)
-{
- int tileSize = image->bitDepth * 8;
- unsigned char * outputPixels = calloc(1024, tileSize);
- int nTilesIn = image->height * image->width / 64;
- image->tileMap.data = calloc(nTilesIn, sizeof(struct Tilemap));
- image->tileMap.numTiles = nTilesIn;
- int nTilesOut = 0;
- unsigned char curTile1[tileSize];
- unsigned char curTile2[tileSize];
-
- for (int i = 0; i < nTilesIn; i++) {
- bool xflip = false;
- bool yflip = false;
- int j;
- memcpy(curTile1, buffer + i * tileSize, tileSize);
-
- for (j = 0; j < nTilesOut; j++) {
- memcpy(curTile2, outputPixels + j * tileSize, tileSize);
- if (memcmp(curTile1, curTile2, tileSize) == 0)
- break;
- xflip = true;
- hflip(curTile2, image->bitDepth);
- if (memcmp(curTile1, curTile2, tileSize) == 0)
- break;
- yflip = true;
- vflip(curTile2, image->bitDepth);
- if (memcmp(curTile1, curTile2, tileSize) == 0)
- break;
- xflip = false;
- hflip(curTile2, image->bitDepth);
- if (memcmp(curTile1, curTile2, tileSize) == 0)
- break;
- yflip = false;
- }
- image->tileMap.data[i].index = j;
- image->tileMap.data[i].xflip = xflip;
- image->tileMap.data[i].yflip = yflip;
- image->tileMap.data[i].palno = 0;
- if (j >= nTilesOut) {
- if (nTilesOut >= 1024)
- FATAL_ERROR("Cannot reduce image to 1024 or fewer tiles.\n");
- memcpy(outputPixels + nTilesOut * tileSize, curTile1, tileSize);
- nTilesOut++;
- }
- }
-
- free(buffer);
- *bufferSize = nTilesOut * tileSize;
- return outputPixels;
-}
-
static void AdvanceMetatilePosition(int *subTileX, int *subTileY, int *metatileX, int *metatileY, int metatilesWide, int metatileWidth, int metatileHeight)
{
(*subTileX)++;
@@ -345,21 +210,15 @@ void ReadImage(char *path, int tilesWidth, int bitDepth, int metatileWidth, int
int fileSize;
unsigned char *buffer = ReadWholeFile(path, &fileSize);
- int numTiles;
- if (image->hasTilemap) {
- buffer = ApplyTilemap(image, buffer, bitDepth);
- numTiles = image->tileMap.numTiles;
- }
- else
- numTiles = fileSize / tileSize;
+ 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)\n", tilesWidth, metatileWidth);
+ 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)\n", tilesHeight, metatileHeight);
+ 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;
@@ -432,9 +291,6 @@ void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int m
break;
}
- if (image->hasTilemap)
- buffer = BuildTilemap(image, buffer, &bufferSize);
-
WriteWholeFile(path, buffer, bufferSize);
free(buffer);
@@ -444,11 +300,6 @@ void FreeImage(struct Image *image)
{
free(image->pixels);
image->pixels = NULL;
- if (image->hasTilemap && image->tileMap.data != NULL) {
- free(image->tileMap.data);
- image->tileMap.data = NULL;
- image->tileMap.numTiles = 0;
- }
}
void ReadGbaPalette(char *path, struct Palette *palette)
@@ -491,45 +342,3 @@ void WriteGbaPalette(char *path, struct Palette *palette)
fclose(fp);
}
-
-void ReadGbaTilemap(char *path, struct Tilemap *tileMap)
-{
- 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);
-
- tileMap->numTiles = fileSize / 2;
- tileMap->data = malloc(tileMap->numTiles * sizeof(struct Tile));
-
- for (int i = 0; i < tileMap->numTiles; i++)
- {
- uint16_t raw = data[2 * i + 0] | (data[2 * i + 1] << 8);
- tileMap->data[i].index = raw & 0x3FF;
- tileMap->data[i].xflip = raw & 0x400 ? 1 : 0;
- tileMap->data[i].yflip = raw & 0x800 ? 1 : 0;
- tileMap->data[i].palno = raw >> 12;
- }
-
- free(data);
-}
-
-void WriteGbaTilemap(char *path, struct Tilemap *tileMap)
-{
- FILE *fp = fopen(path, "wb");
-
- if (fp == NULL)
- FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
-
- for (int i = 0; i < tileMap->numTiles; i++) {
- uint16_t raw = tileMap->data[i].index
- | (tileMap->data[i].xflip << 10)
- | (tileMap->data[i].yflip << 11)
- | (tileMap->data[i].palno << 12);
- fputc(raw & 0xFF, fp);
- fputc(raw >> 8, fp);
- }
-
- fclose(fp);
-}
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