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Diffstat (limited to 'tools/nitrogfx/gfx.c')
-rw-r--r--tools/nitrogfx/gfx.c191
1 files changed, 178 insertions, 13 deletions
diff --git a/tools/nitrogfx/gfx.c b/tools/nitrogfx/gfx.c
index ac156575..3315e00e 100644
--- a/tools/nitrogfx/gfx.c
+++ b/tools/nitrogfx/gfx.c
@@ -246,6 +246,68 @@ void ReadImage(char *path, int tilesWidth, int bitDepth, int metatileWidth, int
free(buffer);
}
+void ReadNtrImage(char *path, int tilesWidth, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors)
+{
+ int fileSize;
+ unsigned char *buffer = ReadWholeFile(path, &fileSize);
+
+ if (memcmp(buffer, "RGCN", 4) != 0)
+ {
+ FATAL_ERROR("Not a valid NCGR character file.\n");
+ }
+
+ unsigned char *charHeader = buffer + 0x10;
+
+ if (memcmp(charHeader, "RAHC", 4) != 0)
+ {
+ FATAL_ERROR("No valid CHAR file after NCLR header.\n");
+ }
+
+ bitDepth = bitDepth ? bitDepth : (charHeader[0xC] == 3 ? 4 : 8);
+
+ if (bitDepth == 4)
+ {
+ image->palette.numColors = 16;
+ }
+
+ unsigned char *imageData = charHeader + 0x20;
+
+ int tileSize = bitDepth * 8;
+
+ int numTiles = (charHeader[0x18] + (charHeader[0x19] << 8) + (charHeader[0x1A] << 16) + (charHeader[0x1B] << 24))
+ / (64 / (8 / bitDepth));
+
+ 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 4:
+ ConvertFromTiles4Bpp(imageData, image->pixels, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
+ break;
+ case 8:
+ ConvertFromTiles8Bpp(imageData, 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;
@@ -297,6 +359,97 @@ void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int m
free(buffer);
}
+void WriteNtrImage(char *path, int numTiles, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors, bool clobberSize, bool byteOrder)
+{
+ FILE *fp = fopen(path, "wb");
+
+ if (fp == NULL)
+ FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
+
+ 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 *pixelBuffer = malloc(bufferSize);
+
+ if (pixelBuffer == NULL)
+ FATAL_ERROR("Failed to allocate memory for pixels.\n");
+
+ int metatilesWide = tilesWidth / metatileWidth;
+
+ switch (bitDepth) {
+ case 4:
+ ConvertToTiles4Bpp(image->pixels, pixelBuffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
+ break;
+ case 8:
+ ConvertToTiles8Bpp(image->pixels, pixelBuffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
+ break;
+ }
+
+ WriteGenericNtrHeader(fp, "RGCN", bufferSize + 0x20, byteOrder);
+
+ unsigned char charHeader[0x20] = { 0x52, 0x41, 0x48, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00 };
+
+ charHeader[4] = (bufferSize + 0x20) & 0xFF;
+ charHeader[5] = ((bufferSize + 0x20) >> 8) & 0xFF;
+ charHeader[6] = ((bufferSize + 0x20) >> 16) & 0xFF;
+ charHeader[7] = ((bufferSize + 0x20) >> 24) & 0xFF;
+
+ if (!clobberSize)
+ {
+ charHeader[8] = numTiles & 0xFF;
+ charHeader[9] = (numTiles >> 8) & 0xFF;
+
+ charHeader[10] = tileSize & 0xFF;
+ charHeader[11] = (tileSize >> 8) & 0xFF;
+ }
+ else
+ {
+ charHeader[8] = 0xFF;
+ charHeader[9] = 0xFF;
+ charHeader[10] = 0xFF;
+ charHeader[11] = 0xFF;
+
+ charHeader[16] = 0x10; //seems to be set when size is clobbered
+ }
+
+ charHeader[12] = bitDepth == 4 ? 3 : 4;
+
+ charHeader[24] = bufferSize & 0xFF;
+ charHeader[25] = (bufferSize >> 8) & 0xFF;
+ charHeader[26] = (bufferSize >> 16) & 0xFF;
+ charHeader[27] = (bufferSize >> 24) & 0xFF;
+
+ fwrite(charHeader, 1, 0x20, fp);
+
+ fwrite(pixelBuffer, 1, bufferSize, fp);
+
+ free(pixelBuffer);
+ fclose(fp);
+}
+
void FreeImage(struct Image *image)
{
free(image->pixels);
@@ -343,7 +496,9 @@ void ReadNtrPalette(char *path, struct Palette *palette)
if ((fileSize - 0x28) % 2 != 0)
FATAL_ERROR("The file size (%d) is not a multiple of 2.\n", fileSize);
- palette->numColors = (fileSize - 0x28) / 2; //remove header and divide by 2
+ palette->bitDepth = paletteHeader[0x8] == 3 ? 4 : 8;
+
+ palette->numColors = palette->bitDepth == 4 ? 16 : 256; //remove header and divide by 2
unsigned char *paletteData = paletteHeader + 0x18;
@@ -386,7 +541,7 @@ void WriteNtrPalette(char *path, struct Palette *palette, bool ncpr)
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
- uint32_t size = palette->numColors * 2;
+ uint32_t size = 256 * 2; //todo check if there's a better way to detect :/
uint32_t extSize = size + (ncpr ? 0x10 : 0x18);
//NCLR header
@@ -404,6 +559,8 @@ void WriteNtrPalette(char *path, struct Palette *palette, bool ncpr)
palHeader[6] = (extSize >> 16) & 0xFF;
palHeader[7] = (extSize >> 24) & 0xFF;
+ if (!palette->bitDepth)
+ palette->bitDepth = 4;
//bit depth
palHeader[8] = palette->bitDepth == 4 ? 0x03: 0x04;
@@ -415,21 +572,29 @@ void WriteNtrPalette(char *path, struct Palette *palette, bool ncpr)
fwrite(palHeader, 1, 0x18, fp);
- unsigned char colours[palette->numColors * 2];
+ unsigned char colours[256 * 2];
//palette data
- for (int i = 0; i < palette->numColors; i++)
+ for (int i = 0; i < 256; 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);
-
- colours[i * 2] = paletteEntry & 0xFF;
- colours[i * 2 + 1] = paletteEntry >> 8;
+ if (i < palette->numColors)
+ {
+ 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);
+
+ colours[i * 2] = paletteEntry & 0xFF;
+ colours[i * 2 + 1] = paletteEntry >> 8;
+ }
+ else
+ {
+ colours[i * 2] = 0x00;
+ colours[i * 2 + 1] = 0x00;
+ }
}
- fwrite(colours, 1, palette->numColors * 2, fp);
+ fwrite(colours, 1, 256 * 2, fp);
fclose(fp);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-15 01:51:51 +0000