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/* GFX2CRTC - png2crtc.c
* CloudStrife - 20080921
* Diffusé sous licence libre CeCILL v2
* Voire LICENCE
*/
#include <stdio.h>
#include <stdlib.h>
#include <png.h>
#include "libraw2crtc.h"
#define ERROR 1
int main(int argc, char **argv)
{
FILE *inFile, *outFile;
unsigned char *inBuffer, *outBuffer;
unsigned long outSize;
unsigned char r1, r6, r9, r12, r13;
png_uint_32 width;
png_uint_32 height;
int bitdepth;
int colorType;
unsigned char mode;
unsigned char forcemode = 0;
unsigned char forcer12 = 0, forcer13 = 0;
unsigned char header[8];
unsigned char is_png;
unsigned int y;
png_structp png_ptr;
png_infop info_ptr;
png_infop end_info;
png_bytep * ptrRow;
// We have to use this temporary variable insted of scanning directly into
// 8 bit integers using %hhu because mingW, relying on MSVCRT, is not C99
// compliant and can't handle this "modern" stuff.
unsigned int stupid_mingw_isnt_c99;
if((argc != 3) && (argc != 4) && (argc != 5) && (argc != 6) && (argc != 7))
{
printf("Utilisation : %s input_filename output_filename [registre9] [mode] "
"[r12] [r13]\n",argv[0]);
exit(0);
}
inFile = fopen(argv[1],"rb");
if(argc >= 4)
/*{sscanf(argv[3],"%hhu",&r9);}*/
{sscanf(argv[3],"%u",&stupid_mingw_isnt_c99); r9=stupid_mingw_isnt_c99;}
else
{r9 = 7;}
if(argc >= 5)
{
// sscanf(argv[4],"%hhu",&mode);
sscanf(argv[4],"%u",&stupid_mingw_isnt_c99); mode = stupid_mingw_isnt_c99;
forcemode = 1;
if(mode > 3) puts("mode doit �tre compris entre 0 et 3");
mode = mode & 3;
}
// Registre r12 et r13 par d�faut :
r12 = 0x0C;
r13 = 0x00;
if(argc >= 6)
{
// sscanf(argv[5],"%hhu",&r12);
sscanf(argv[5],"%u",&stupid_mingw_isnt_c99); r12 = stupid_mingw_isnt_c99;
forcer12 = 1;
}
if(argc >= 7)
{
// sscanf(argv[6],"%hhu",&r13);
sscanf(argv[6],"%u",&stupid_mingw_isnt_c99); r13=stupid_mingw_isnt_c99;
forcer13 = 1;
}
if (inFile == NULL)
{
printf("Fichier Inexistant\n");
exit(1);
}
fread(header, 1, 8, inFile);
is_png = !png_sig_cmp(header, 0, 8);
if (!is_png)
{
printf("Ce n'est pas un png\n");
exit(2);
}
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, NULL,
NULL);
if (!png_ptr) return (ERROR);
info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr)
{
png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
return (ERROR);
}
end_info = png_create_info_struct(png_ptr);
if (!end_info)
{
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
return (ERROR);
}
if (setjmp(png_jmpbuf(png_ptr)))
{
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
fclose(inFile);
return (ERROR);
}
png_init_io(png_ptr, inFile);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bitdepth, &colorType, NULL,
NULL, NULL);
if(!((colorType == PNG_COLOR_TYPE_GRAY)
|| (colorType == PNG_COLOR_TYPE_PALETTE)))
{
puts("Ce PNG n'est pas dans un format exploitable "
"(niveaux de gris ou palette)");
return (ERROR);
}
if(forcemode == 0)
{
switch(bitdepth)
{
case 1:
{
mode = 2;
break;
}
case 2:
{
mode = 1;
break;
}
case 4:
{
mode = 0;
break;
}
default:
{
puts("Ce PNG n'est pas dans un format exploitable"
"(bitdepth = 1, 2 ou 4)");
return (ERROR);
}
}
}
png_set_packing(png_ptr); /* Convertir en mode 1 pixel par octets */
png_read_update_info(png_ptr, info_ptr);
inBuffer = (unsigned char*)malloc(width*height);
if (inBuffer == NULL)
{
printf("Allocation inBuffer rat�\n");
exit(3);
}
ptrRow = (png_bytep*)malloc(sizeof(png_bytep)*height);
for(y = 0; y < height; y++)
{
ptrRow[y] = (inBuffer + width*y);
}
png_read_image(png_ptr, ptrRow);
outBuffer = raw2crtc(inBuffer, width, height, mode, r9, &outSize, &r1, r12, r13, &r6);
printf("Taille de l'�cran de sortie : %lu\n",outSize);
printf("Mode = %d Largeur = %d Hauteur = %d R1 = %d R9 = %d R6 = %d\n",mode,(int)width,(int)height,r1,r9,r6);
outFile = fopen(argv[2], "wb");
fwrite(outBuffer, 1, outSize, outFile);
fclose(outFile);
png_read_end(png_ptr, end_info);
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
free(inBuffer);
inBuffer = NULL;
free(outBuffer);
outBuffer = NULL;
return 0;
}
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