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#include <stdio.h>
#include <string.h>
#include <png.h>
#include "moreio.h"
#include "helpers.h"
#include "splitter.hpp"
#include "interface.h"
#include "messbox.h"
#include "tga.h"
#include "compilerinfo.h"
unsigned short int * * backDropImage;
bool backdrop32;
unsigned char * backDrop32Image;
int VERT_RES, HORZ_RES;
bool initBackDropForCompiler (int x, int y) {
int a;
HORZ_RES = x;
VERT_RES = y;
backDropImage = new unsigned short int * [y];
if (! backDropImage) return false;
for (a = 0; a < y; a ++) {
backDropImage[a] = new unsigned short int [x];
if (! backDropImage[a]) return false;
}
return true;
}
int loadBackDropForCompiler (char * fileName) {
unsigned short int * toScreen;
unsigned short int t1, t2;
palCol thePalette[256];
// Open the file
FILE * fp = fopen (fileName, "rb");
if (fp == NULL) {
return false;
}
// Grab the header
TGAHeader imageHeader;
const char * errorBack;
errorBack = readTGAHeader (imageHeader, fp, thePalette);
if (errorBack) {
// alert (errorBack);
return false;
}
if (imageHeader.pixelDepth < 24) {
initBackDropForCompiler (imageHeader.width, imageHeader.height);
unsigned short (* readColFunction) (FILE *, int, palCol[], int, int) =
imageHeader.compressed ? readCompressedColour : readAColour;
for (t2 = imageHeader.height; t2; t2 --) {
toScreen = backDropImage[(imageHeader.imageDescriptor & 32) ? (imageHeader.height - t2) : (t2 - 1)];
for (t1 = 0; t1 < imageHeader.width; t1 ++) {
* (toScreen ++) = readColFunction (fp, imageHeader.pixelDepth, thePalette, t1, t2);
}
}
} else {
HORZ_RES = imageHeader.width;
VERT_RES = imageHeader.height;
backdrop32 = true;
backDrop32Image = new unsigned char [imageHeader.height * imageHeader.width * 4];
if (! backDrop32Image) return false;
unsigned char r,g,b,a;
for (int t2 = imageHeader.height-1; t2>=0; t2 --) {
for (int t1 = 0; t1 < imageHeader.width; t1 ++) {
if (! imageHeader.compressed) {
grabRGBA (fp, imageHeader.pixelDepth, r, g, b, a, thePalette);
} else {
grabRGBACompressed (fp, imageHeader.pixelDepth, r, g, b, a, thePalette);
}
backDrop32Image[t2*imageHeader.width*4+t1*4] = r;
backDrop32Image[t2*imageHeader.width*4+t1*4+1] = g;
backDrop32Image[t2*imageHeader.width*4+t1*4+2] = b;
backDrop32Image[t2*imageHeader.width*4+t1*4+3] = a;
}
}
}
int i = ftell (fp);
fclose (fp);
return i;
}
int saveHSI (char * filename) {
FILE * writer = fopen (filename, "wb");
int x, y, lookAhead;
unsigned short int * fromHere;
unsigned short int * lookPointer;
if (! writer) return 0;
put2bytes (HORZ_RES, writer);
put2bytes (VERT_RES, writer);
for (y = 0; y < VERT_RES; y ++) {
fromHere = backDropImage[y];
x = 0;
while (x < HORZ_RES) {
lookPointer = fromHere + 1;
for (lookAhead = x + 1; lookAhead < HORZ_RES; lookAhead ++) {
if (lookAhead - x == 256) break;
if (* fromHere != * lookPointer) break;
lookPointer ++;
}
if (lookAhead == x + 1) {
put2bytes (* fromHere, writer);
} else {
put2bytes (* fromHere | 32, writer);
fputc (lookAhead - x - 1, writer);
}
fromHere = lookPointer;
x = lookAhead;
}
}
int i = ftell (writer);
fclose (writer);
return i;
}
int savePNG (char * filename, int w, int h, unsigned char * data) {
FILE * fp = fopen (filename, "wb");
if (! fp) return 0;
png_structp png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr) {
fclose (fp);
return false;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr){
png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
fclose (fp);
return false;
}
png_init_io(png_ptr, fp);
png_set_IHDR(png_ptr, info_ptr, w, h,
8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
unsigned char * row_pointers[h];
for (int i = 0; i < h; i++) {
row_pointers[i] = data + 4*i*w;
}
png_set_rows(png_ptr, info_ptr, row_pointers);
png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
int i = ftell (fp);
fclose (fp);
return i;
}
bool convertTGA (char * filename) {
char * oldName = joinStrings (filename, "");
filename[strlen (filename) - 3] = 's';
filename[strlen (filename) - 2] = 'l';
filename[strlen (filename) - 1] = getDither() ? '2' : 'x';
int i, j;
if (newerFile (oldName, filename)) {
backdrop32 = false;
setCompilerText (COMPILER_TXT_ITEM, "Compressing image");
i = loadBackDropForCompiler (oldName);
if (! i) return false;
if (backdrop32) {
j = savePNG (filename, HORZ_RES, VERT_RES, backDrop32Image);
delete backDrop32Image;
if (! j) return false;
} else {
j = saveHSI (filename);
for (int a = 0; a < VERT_RES; a ++) delete backDropImage[a];
delete backDropImage;
if (! j) return false;
}
setCompilerText (COMPILER_TXT_ITEM, "");
}
delete oldName;
return true;
}
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