Spencer/PNG_CC
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Merge v0.0.2

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2021-11-08 23:46:04 -05:00
parent c86b56286c b4e42a75b5
commit 06390c4df2
5 changed files with 654 additions and 8 deletions
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17
include/crc_util.h
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@@ -33,9 +33,24 @@ struct PNG_FILE_STRUCT {
struct PNG_IDAT_FILE_STRUCT png_idat_data;
};
struct EMBED_THREAD_STRUCT {
pthread_mutex_t mutex_lock;
pthread_t thread_id;
int *searching;
unsigned char *data;
unsigned int data_len;
size_t uncom_data_len;
size_t cur_offset;
size_t cur_iteration;
int width;
int color_range;
unsigned int win_size;
char *message;
};
extern const long png_signature[8];
int check_header_length(unsigned char *addr, long offset);
unsigned long check_header_length(unsigned char *addr, long offset);
int check_file_header(char *addr);
int create_cc_file(unsigned char *addr, unsigned long file_length);
unsigned char* file_to_char_array(FILE *in_file, size_t* size);

7
include/pspng.h Normal file
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@@ -0,0 +1,7 @@
#pragma once
int check_file_header(char *addr);
unsigned long first_idat(unsigned char *addr);
int total_idat(unsigned char *addr);
void build_png_file(struct PNG_FILE_STRUCT *png_file, char *out_file_name);
int change_idat_content(unsigned char *addr, struct PNG_FILE_STRUCT *png_file, char *message, int accuracy, unsigned long offset, char *out_file_name);