jpeg_writer.h

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#ifndef UTILS_JPEG_WRITER_H_1FB9D4E0_CAED_4C8E_97BA_2ECDAF41F006
#define UTILS_JPEG_WRITER_H_1FB9D4E0_CAED_4C8E_97BA_2ECDAF41F006
 
#include <stdint.h>  // for uint8_t
 
struct jpeg_writer_data {
        enum gpujpeg_writer_subsasmpling {
                JPEG_WRITER_SUBS_422 = 0,
                JPEG_WRITER_SUBS_420 = 1,
        } subsampling;
        unsigned width;
        unsigned height;
        unsigned restart_interval;
 
        char *dqt_marker_start; // set by jpeg_writer_write_headers()
};
 
enum {
        JPEG_QUANT_SIZE = 64, 
};
 
void jpeg_writer_write_headers(char **buffer, struct jpeg_writer_data *info);
void jpeg_writer_fill_dqt(char   *buffer,
                          uint8_t quant_table[2][JPEG_QUANT_SIZE]);
void jpeg_writer_write_eoi(char **buffer);
 
#endif // defined UTILS_JPEG_WRITER_H_1FB9D4E0_CAED_4C8E_97BA_2ECDAF41F006