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/*
* io-png.c: GdkPixBuf image loader for PNG files.
*
* Author:
* Rasterman (raster@redhat.com).
* Miguel de Icaza (miguel@gnu.org)
*
*/
#include <config.h>
#include <stdio.h>
#include "gdk-pixbuf.h"
#include "gdk-pixbuf-io.h"
#include <png.h>
/* Shared library entry point */
GdkPixBuf *
image_load (FILE *f);
{
png_structp png;
png_infop info_ptr, end_info;
int width, height, depth, color_type, interlace_type;
g_return_val_if_fail (filename != NULL, NULL);
png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png)
return NULL;
info_ptr = png_create_info_struct (png);
if (!info_ptr){
png_destroy_read_struct (&png, NULL, NULL);
return NULL;
}
end_info = png_create_info_struct (png);
if (!end_info){
png_destroy_read_struct (&png, &info_ptr, NULL);
return NULL:
}
if (setjmp (png->jmpbuf)){
png_destroy_read_struct (&png, &info_ptr, &end_info);
return NULL;
}
png_init_io (pngptr, f);
png_read_info (png, info_ptr);
png_get_IHDR (png, info_ptr, &width, &height, &depth, &color_type, &interlace_type, NULL, NULL);
if (color_type == color_type == PNG_COLOR_TYPE_PALETTE)
png_set_expand (png);
png_set_strip_16 (png);
png_set_packing (png);
if (png_get_valid (png, info_ptr, PNG_INFO_tRNS))
png_set_expand (png);
png_set_filler (png, 0xff, PNG_FILLER_AFTER);
/* FIXME finish this */
}
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