dionmoustos/PokemonEmeraldSafariFrontier
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dumped most of pokenav.s

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golem galvanize
2018-01-15 23:38:10 -05:00
parent 11cb3275cc
commit 5a5eb4ff59
61 changed files with 1861 additions and 182 deletions
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48
tools/gbagfx/convert_png.c
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@@ -45,6 +45,40 @@ static FILE *PngReadOpen(char *path, png_structp *pngStruct, png_infop *pngInfo)
return fp;
}
static unsigned char *ConvertBitDepth(unsigned char *src, int srcBitDepth, int destBitDepth, int numPixels)
{
// Round the number of bits up to the next 8 and divide by 8 to get the number of bytes.
int srcSize = ((numPixels * srcBitDepth + 7) & ~7) / 8;
int destSize = ((numPixels * destBitDepth + 7) & ~7) / 8;
unsigned char *output = calloc(destSize, 1);
unsigned char *dest = output;
int i;
int j;
int destBit = 8 - destBitDepth;
for (i = 0; i < srcSize; i++)
{
unsigned char srcByte = src[i];
for (j = 8 - srcBitDepth; j >= 0; j -= srcBitDepth)
{
unsigned char pixel = (srcByte >> j) % (1 << srcBitDepth);
if (pixel >= (1 << destBitDepth))
FATAL_ERROR("Image exceeds the maximum color value for a %ibpp image.\n", destBitDepth);
*dest |= pixel << destBit;
destBit -= destBitDepth;
if (destBit < 0)
{
dest++;
destBit = 8 - destBitDepth;
}
}
}
return output;
}
void ReadPng(char *path, struct Image *image)
{
png_structp png_ptr;
@@ -54,9 +88,6 @@ void ReadPng(char *path, struct Image *image)
int bit_depth = png_get_bit_depth(png_ptr, info_ptr);
if (bit_depth != image->bitDepth)
FATAL_ERROR("\"%s\" has a bit depth of %d, but the expected bit depth is %d.\n", path, bit_depth, image->bitDepth);
int color_type = png_get_color_type(png_ptr, info_ptr);
if (color_type != PNG_COLOR_TYPE_GRAY && color_type != PNG_COLOR_TYPE_PALETTE)
@@ -93,6 +124,17 @@ void ReadPng(char *path, struct Image *image)
free(row_pointers);
fclose(fp);
if (bit_depth != image->bitDepth)
{
unsigned char *src = image->pixels;
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && bit_depth != 8)
FATAL_ERROR("Bit depth of image must be 1, 2, 4, or 8.\n");
image->pixels = ConvertBitDepth(image->pixels, bit_depth, image->bitDepth, image->width * image->height);
free(src);
image->bitDepth = bit_depth;
}
}
void ReadPngPalette(char *path, struct Palette *palette)