9 lines
420 B
C
9 lines
420 B
C
#pragma once
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int check_file_header(char *addr);
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int check_header_length(unsigned char *addr, long offset);
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unsigned long first_idat(unsigned char *addr);
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int total_idat(unsigned char *addr);
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void build_png_file(struct PNG_FILE_STRUCT *png_file, char *out_file_name);
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int change_idat_content(unsigned char *addr, struct PNG_FILE_STRUCT *png_file, char *message, int accuracy, unsigned long offset, char *out_file_name);
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