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author | Mystery Man <unknown@mandriva.org> | 2005-08-30 18:55:27 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2005-08-30 18:55:27 +0000 |
commit | ea3a905b182f34bba2f071111d5263f1868c4a6f (patch) | |
tree | 45713836a82198448c93696b30f3c9ab7ba9aa4a /tools/shift_img.c | |
parent | f5427227e11f6025648f9537ffd3110c003f7e25 (diff) | |
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This commit was manufactured by cvs2svn to create tagV10_3_0_50mdk
'V10_3_0_50mdk'.
Diffstat (limited to 'tools/shift_img.c')
-rw-r--r-- | tools/shift_img.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/tools/shift_img.c b/tools/shift_img.c deleted file mode 100644 index 36cb53e48..000000000 --- a/tools/shift_img.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Guillaume Cottenceau (gc at mandriva.com) - * - * Copyright 2002-2005 Mandriva - * - * This software may be freely redistributed under the terms of the GNU - * public license. - * - */ - -#include <unistd.h> -#include <stdio.h> -#include <string.h> -#include <stdarg.h> - -#define PNG_DEBUG 3 -#include <png.h> - -void abort_(const char * s, ...) -{ - va_list args; - va_start(args, s); - vfprintf(stderr, s, args); - fprintf(stderr, "\n"); - va_end(args); - abort(); -} - -int x, y; - -int width, height; -png_byte color_type; -png_byte bit_depth; - -png_structp png_ptr; -png_infop info_ptr; -int number_of_passes; -png_bytep * row_pointers; - -void read_png_file(char* file_name) -{ - char header[8]; // 8 is the maximum size that can be checked - - /* open file and test for it being a png */ - FILE *fp = fopen(file_name, "rb"); - if (!fp) - abort_("[read_png_file] File %s could not be opened for reading", file_name); - fread(header, 1, 8, fp); - if (png_sig_cmp(header, 0, 8)) - abort_("[read_png_file] File %s is not recognized as a PNG file", file_name); - - - /* 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"); - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) - abort_("[read_png_file] png_create_info_struct failed"); - - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[read_png_file] Error during init_io"); - - png_init_io(png_ptr, fp); - png_set_sig_bytes(png_ptr, 8); - - png_read_info(png_ptr, info_ptr); - - width = info_ptr->width; - height = info_ptr->height; - color_type = info_ptr->color_type; - bit_depth = info_ptr->bit_depth; - - number_of_passes = png_set_interlace_handling(png_ptr); - png_read_update_info(png_ptr, info_ptr); - - - /* read file */ - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[read_png_file] Error during read_image"); - - row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height); - for (y=0; y<height; y++) - row_pointers[y] = (png_byte*) malloc(info_ptr->rowbytes); - - png_read_image(png_ptr, row_pointers); -} - - -void write_png_file(char* file_name) -{ - /* create file */ - FILE *fp = fopen(file_name, "wb"); - if (!fp) - abort_("[write_png_file] File %s could not be opened for writing", file_name); - - - /* initialize stuff */ - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - - if (!png_ptr) - abort_("[write_png_file] png_create_write_struct failed"); - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) - abort_("[write_png_file] png_create_info_struct failed"); - - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[write_png_file] Error during init_io"); - - png_init_io(png_ptr, fp); - - - /* write header */ - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[write_png_file] Error during writing header"); - - png_set_IHDR(png_ptr, info_ptr, width, height, - bit_depth, color_type, PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_write_info(png_ptr, info_ptr); - - - /* write bytes */ - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[write_png_file] Error during writing bytes"); - - png_write_image(png_ptr, row_pointers); - - - /* end write */ - if (setjmp(png_jmpbuf(png_ptr))) - abort_("[write_png_file] Error during end of write"); - - png_write_end(png_ptr, NULL); - -} - -void process_file(char* shift) -{ - int shift_ = atoi(shift); - - if (info_ptr->color_type != PNG_COLOR_TYPE_RGBA) - abort_("[process_file] color_type of input file must be PNG_COLOR_TYPE_RGBA (is %d)", info_ptr->color_type); - - width -= shift_; - for (y=0; y<height; y++) { - row_pointers[y] += 4 * shift_; - } - -} - - -int main(int argc, char **argv) -{ - if (argc != 4) - abort_("Usage: program_name <file_in> <file_out> <shift>"); - - read_png_file(argv[1]); - process_file(argv[3]); - write_png_file(argv[2]); -} |