/*
* jcmaster . h
*
* This file was part of the Independent JPEG Group ' s software :
* Copyright ( C ) 1991 - 1995 , Thomas G . Lane .
* libjpeg - turbo Modifications :
* Copyright ( C ) 2016 , D . R . Commander .
* For conditions of distribution and use , see the accompanying README . ijg
* file .
*
* This file contains master control structure for the JPEG compressor .
*/
/* Private state */
typedef enum {
main_pass, /* input data, also do first output step */
huff_opt_pass, /* Huffman code optimization pass */
output_pass /* data output pass */
} c_pass_type;
typedef struct {
struct jpeg_comp_master pub; /* public fields */
c_pass_type pass_type; /* the type of the current pass */
int pass_number; /* # of passes completed */
int total_passes; /* total # of passes needed */
int scan_number; /* current index in scan_info[] */
/*
* This is here so we can add libjpeg - turbo version / build information to the
* global string table without introducing a new global symbol . Adding this
* information to the global string table allows one to examine a binary
* object and determine which version of libjpeg - turbo it was built from or
* linked against .
*/
const char *jpeg_version;
} my_comp_master;
typedef my_comp_master *my_master_ptr;
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