ref: 1e0ed4cfef0787d6d538e72cf587e4bf5e8d1da2
dir: /src/gfx/bmp/bmp2pth.c/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#define OUTPUT_PAD_SIZE 20
#define RLE_ID 0xCC // DO NOT change this!
static char input[4096 + 1];
static uint8_t *ToPtr, *DataPtr, *a0, *a1;
static int32_t DataLen, CompLen, d0, d1, d4, d7;
int main(int argc, char *argv[])
{
char bitmap_magic[2], *out_filename;
uint8_t p8_1, p8_2, p8_3, p8_4;
int32_t bitmap_width, bitmap_height, bitmap_depth, bitmap_offset;
int32_t x, y, i, oy, t;
uint32_t *pixel_data, p32_1, p32_2, p32_3, p32_4;
FILE *in, *out;
#ifndef _DEBUG
if (argc != 2)
{
printf("Usage: bmp2pth <bitmap.bmp>\n");
return -1;
}
strcpy(input, argv[1]);
#else
strcpy(input, "debug.bmp");
#endif
in = fopen(input, "rb");
if (in == NULL)
{
printf("ERROR: Could not open input bitmap!\n");
system("PAUSE");
return 1;
}
out_filename = (char *)malloc(strlen(input) + 3);
if (out_filename == NULL)
{
printf("ERROR: Out of memory!\n");
fclose(in);
system("PAUSE");
return 1;
}
sprintf(out_filename, "%s.c", input);
out = fopen(out_filename, "w");
if (out == NULL)
{
printf("ERROR: Could not open output bitmap!\n");
free(out_filename);
fclose(in);
system("PAUSE");
return 1;
}
fread(bitmap_magic, 1, 2, in);
if (strncmp(bitmap_magic, "BM", 2) != 0)
{
printf("ERROR: Input is not a valid Windows bitmap!\n");
fclose(in);
fclose(out);
system("PAUSE");
return 1;
}
fseek(in, 0x12, SEEK_SET);
fread(&bitmap_width, 4, 1, in);
fread(&bitmap_height, 4, 1, in);
fseek(in, 0x1C, SEEK_SET);
fread(&bitmap_depth, 4, 1, in);
bitmap_depth &= 0xFF;
fseek(in, 0x0A, SEEK_SET);
fread(&bitmap_offset, 4, 1, in);
fseek(in, bitmap_offset, SEEK_SET);
if (bitmap_depth != 16 && bitmap_depth != 24 && bitmap_depth != 32)
{
printf("ERROR: Bitmap is not truecolor bitmap (16, 24, 32)\n");
fclose(in);
fclose(out);
system("PAUSE");
return 1;
}
pixel_data = (uint32_t *)malloc(bitmap_width * bitmap_height * (bitmap_depth / 8));
if (pixel_data == NULL)
{
printf("ERROR: Out of memory!\n");
fclose(in);
fclose(out);
system("PAUSE");
return 1;
}
if (fread(pixel_data, bitmap_depth / 8, bitmap_width * bitmap_height, in) != (size_t)(bitmap_width * bitmap_height))
{
printf("ERROR: Could not copy bitmap data into memory!\n");
fclose(in);
fclose(out);
free(pixel_data);
system("PAUSE");
return 1;
}
// mirror pixel data so we get the real deal
for (y = 0; y < bitmap_height/2; y++)
{
for (x = 0; x < bitmap_width; x++)
{
oy = bitmap_height - 1 - y;
t = pixel_data[y * bitmap_width + x];
pixel_data[y * bitmap_width + x] = pixel_data[oy * bitmap_width + x];
pixel_data[oy * bitmap_width + x] = t;
}
}
DataLen = (bitmap_width * bitmap_height) / 4;
DataPtr = (uint8_t *)malloc(DataLen);
for (i = 0; i < DataLen; i++)
{
p32_1 = pixel_data[(i * 4) + 0];
p32_2 = pixel_data[(i * 4) + 1];
p32_3 = pixel_data[(i * 4) + 2];
p32_4 = pixel_data[(i * 4) + 3];
if (p32_1 == 0x000000) p8_1 = 0;
else if (p32_1 == 0xBBBBBB) p8_1 = 1;
else if (p32_1 == 0x888888) p8_1 = 2;
else if (p32_1 == 0x555555) p8_1 = 3;
else
{
printf("ERROR: Illegal pixel 0x%08X found. Stopping!\n", p32_1);
free(pixel_data);
free(DataPtr);
system("PAUSE");
return 1;
}
if (p32_2 == 0x000000) p8_2 = 0;
else if (p32_2 == 0xBBBBBB) p8_2 = 1;
else if (p32_2 == 0x888888) p8_2 = 2;
else if (p32_2 == 0x555555) p8_2 = 3;
else
{
printf("ERROR: Illegal pixel 0x%08X found. Stopping!\n", p32_2);
free(pixel_data);
free(DataPtr);
fclose(out);
system("PAUSE");
return (1);
}
if (p32_3 == 0x000000) p8_3 = 0;
else if (p32_3 == 0xBBBBBB) p8_3 = 1;
else if (p32_3 == 0x888888) p8_3 = 2;
else if (p32_3 == 0x555555) p8_3 = 3;
else
{
printf("ERROR: Illegal pixel 0x%08X found. Stopping!\n", p32_3);
free(pixel_data);
free(DataPtr);
fclose(out);
system("PAUSE");
return 1;
}
if (p32_4 == 0x000000) p8_4 = 0;
else if (p32_4 == 0xBBBBBB) p8_4 = 1;
else if (p32_4 == 0x888888) p8_4 = 2;
else if (p32_4 == 0x555555) p8_4 = 3;
else
{
printf("ERROR: Illegal pixel 0x%08X found. Stopping!\n", p32_4);
free(pixel_data);
free(DataPtr);
fclose(out);
system("PAUSE");
return 1;
}
DataPtr[i] = (p8_1 << 6) | (p8_2 << 4) | (p8_3 << 2) | p8_4;
}
free(pixel_data);
// The following mess is a direct 68k asm of ptcompactor.s found in
// the ProTracker 1.3 source code archive.
goto Main;
JustCode:
*a1++ = RLE_ID; // Output compacter code
*a1++ = 0; // Output zero
*a1++ = RLE_ID; // Output compacter code
goto NextByte; // Do next byte
Equal:
d1 = d0;
d4++; // Add one to equal-count
if (d4 >= 255) // 255 or more?
goto FlushBytes; // Yes, flush buffer
goto NextByte; // Do next byte
FlushBytes:
if (d4 >= 3) // 4 or more
goto FourOrMore; // Yes, output codes
NotFour:
*a1++ = (uint8_t)d1; // Output byte
if (--d4 != -1) goto NotFour; // Loop...
d4 = 0; // Zero count
goto NextByte; // Another byte
FourOrMore:
*a1++ = RLE_ID; // Output compacter code
*a1++ = (uint8_t)d4; // Output count
*a1++ = (uint8_t)d1; // Output byte
d4 = 0; // Zero count
d0++;
goto NextByte; // Do next byte
Main:
ToPtr = (uint8_t *)malloc(DataLen);
a0 = DataPtr; // From ptr.
a1 = ToPtr; // To ptr.
d7 = DataLen; // Length
d4 = 0; // Clear count
EqLoop:
d0 = *a0++; // Get a byte
if (d0 == RLE_ID) // Same as compacter code?
goto JustCode; // Output JustCode
if (d7 == 1)
goto endskip;
if (d0 == *a0) // Same as previous byte?
goto Equal; // Yes, it was equal
endskip:
if (d4 > 0) // Not equal, any equal buffered?
goto FlushBytes; // Yes, output them
*a1++ = (uint8_t)d0; // Output byte
d4 = 0;
NextByte:
d7--; // Subtract 1 from length
if (d7 > 0) goto EqLoop; // Loop until length = 0
if (d4 == 0) // Any buffered bytes?
goto endok; // No, goto end
if (d4 >= 3) // More than 4?
goto FourOrMore2; // Yes, skip
NotFour2:
*a1++ = (uint8_t)d0; // Output byte
if (--d4 != -1) goto NotFour2; // Loop...
goto endok; // Goto end;
FourOrMore2:
*a1++ = RLE_ID; // Output compacter code
*a1++ = (uint8_t)d4; // Output count
*a1++ = (uint8_t)d0; // Output byte
endok:
free(DataPtr);
CompLen = (uint32_t)a1 - (uint32_t)ToPtr;
fprintf(out, "#include <stdint.h>\n\n");
fprintf(out, "// Final unpack length: %d\n", DataLen * 4);
fprintf(out, "// Decoded length: %d (first four bytes of buffer)\n", DataLen);
fprintf(out, "const uint8_t renameMe[%d] =\n{\n", CompLen + 4);
fprintf(out, "\t0x%02X,0x%02X,0x%02X,0x%02X,",
(DataLen & 0xFF000000) >> 24, (DataLen & 0x00FF0000) >> 16,
(DataLen & 0x0000FF00) >> 8, DataLen & 0x000000FF);
for (i = 4; i < CompLen+4; i++)
{
if (i == CompLen+3) fprintf(out, "0x%02X\n};\n", ToPtr[i-4]);
else if ((i % OUTPUT_PAD_SIZE) == 0) fprintf(out, "\t0x%02X,", ToPtr[i-4]);
else if ((i % OUTPUT_PAD_SIZE) == OUTPUT_PAD_SIZE-1) fprintf(out, "0x%02X,\n", ToPtr[i-4]);
else fprintf(out, "0x%02X,", ToPtr[i-4]);
}
free(ToPtr);
fclose(out);
printf("Done successfully.\n");
return 0;
}