diff options
Diffstat (limited to 'plugingui/image.cc')
-rw-r--r-- | plugingui/image.cc | 57 |
1 files changed, 40 insertions, 17 deletions
diff --git a/plugingui/image.cc b/plugingui/image.cc index 32994b6..d0afe70 100644 --- a/plugingui/image.cc +++ b/plugingui/image.cc @@ -26,24 +26,15 @@ */ #include "image.h" -#include "resource.h" - #include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <stdarg.h> -void abort_(const char * s, ...) -{ - va_list args; - va_start(args, s); - vfprintf(stderr, s, args); - fprintf(stderr, "\n"); - va_end(args); - abort(); -} +#include <hugin.hpp> +#include "resource.h" // http://blog.hammerian.net/2009/reading-png-images-from-memory/ typedef struct { @@ -77,29 +68,59 @@ GUI::Image::~Image() { } +void GUI::Image::setError(int err) +{ + GUI::Resource rc(":png_error"); + + const char *p = rc.data(); + + memcpy(&w, p, 4); p += 4; + memcpy(&h, p, 4); p += 4; + + DEBUG(image, "w:%d, h:%d\n", w, h); + + row_pointers = (png_bytep*)malloc(sizeof(png_bytep) * h); + for(unsigned int y = 0; y < h; y++) { + size_t size = w * sizeof(unsigned int); + DEBUG(image, "rc.size:%d >= p:%d (rowsize: %d)\n", + rc.size(), p - rc.data(), size); + row_pointers[y] = (png_byte*)malloc(size); + memcpy(row_pointers[y], p, size); + p += size; + } +} + void GUI::Image::load(const char* data, size_t size) { const char *header = data; // test for it being a png: if(png_sig_cmp((png_byte*)header, 0, 8)) { - abort_("[read_png_file] File is not recognized as a PNG file"); + ERR(image, "[read_png_file] File is not recognized as a PNG file"); + setError(0); + return; } // initialize stuff png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); if(!png_ptr) { - abort_("[read_png_file] png_create_read_struct failed"); + ERR(image, "[read_png_file] png_create_read_struct failed"); + setError(1); + return; } info_ptr = png_create_info_struct(png_ptr); if(!info_ptr) { - abort_("[read_png_file] png_create_info_struct failed"); + ERR(image, "[read_png_file] png_create_info_struct failed"); + setError(2); + return; } if(setjmp(png_jmpbuf(png_ptr))) { - abort_("[read_png_file] Error during init_io"); + ERR(image, "[read_png_file] Error during init_io"); + setError(3); + return; } //png_init_io(png_ptr, fp); @@ -122,9 +143,11 @@ void GUI::Image::load(const char* data, size_t size) png_read_update_info(png_ptr, info_ptr); - /* read file */ + // read file if (setjmp(png_jmpbuf(png_ptr))) { - abort_("[read_png_file] Error during read_image"); + ERR(image, "[read_png_file] Error during read_image"); + setError(4); + return; } row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * h); |