civx Code

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <png.h>

int write_png_ (char *path,png_byte IN[2048*2048*2],int *NBPP,int *PNGX, int *PNGY) {
	int i, j;
	
	png_info *info_ptr;
	png_struct *png_ptr;
	png_byte *row_pointers[2048];
	char *path_tmp;
	path_tmp=malloc(1024);
	
	//printf("%s\n",path);
	char *ch="&";
	path_tmp=strtok(path,ch);
	printf("opening %s\n",path_tmp);

	FILE *fp = fopen(path_tmp, "wb");
	for (i=0;i<*PNGY;i++){

		row_pointers[i]=&(IN[i*(*NBPP/8)*(*PNGX)]);
		//printf("%d\n",i);
	}

 	png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
	if (png_ptr == NULL) {
		fprintf(stderr, "cannot allocate LIBPNG structure");
		exit(1);
	}

	info_ptr = png_create_info_struct (png_ptr);
	if (info_ptr == NULL) {
		png_destroy_write_struct (&png_ptr, (png_infopp)NULL);
		fprintf(stderr, "cannot allocate LIBPNG structures");
		exit(2);
	}
	png_init_io (png_ptr, fp);
    
//	png_set_compression_level(png_ptr,9);

	png_set_IHDR(png_ptr, info_ptr, *PNGX, *PNGY,
		*NBPP, 0, PNG_INTERLACE_NONE,
		PNG_COMPRESSION_TYPE_DEFAULT, 0); 

	png_write_info(png_ptr, info_ptr);

	png_set_packing (png_ptr);

	//	printf("encore %s\n",path);

	png_write_image(png_ptr,row_pointers);

	png_write_end(png_ptr, NULL); 

	png_destroy_write_struct(&png_ptr, &info_ptr);

	fclose(fp);

}