ra8_jpeg_sw_encode_internal.h

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#pragma once
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_err.h"
#include "ra8_jpeg_sw_internal.h"

typedef struct {
  uint8_t* dst; 
  uint32_t cap; 
  uint32_t pos; 
 
  uint32_t bit_buf; 
  uint8_t  bit_cnt; 
 
  uint8_t qy[k_ra8_jpeg_block_size]; 
  uint8_t qc[k_ra8_jpeg_block_size]; 
 
  int32_t dc_pred[k_ra8_jpeg_max_comps]; 
 
  uint16_t code_dc_l[k_ra8_jpeg_huff_max]; 
  uint8_t  size_dc_l[k_ra8_jpeg_huff_max]; 
  uint16_t code_ac_l[k_ra8_jpeg_huff_max]; 
  uint8_t  size_ac_l[k_ra8_jpeg_huff_max]; 
  uint16_t code_dc_c[k_ra8_jpeg_huff_max]; 
  uint8_t  size_dc_c[k_ra8_jpeg_huff_max]; 
  uint16_t code_ac_c[k_ra8_jpeg_huff_max]; 
  uint8_t  size_ac_c[k_ra8_jpeg_huff_max]; 
  bool     overflow;                       
} ra8_jpeg_enc_ctx_t;

RA8_PRIV void priv_jpeg_sw_enc_emit_u16(ra8_jpeg_enc_ctx_t* e, uint16_t v);

RA8_PRIV void priv_jpeg_sw_enc_put_bits(ra8_jpeg_enc_ctx_t* e, uint32_t code, uint8_t n);

RA8_PRIV void priv_jpeg_sw_enc_flush_bits(ra8_jpeg_enc_ctx_t* e);

RA8_PRIV void priv_jpeg_sw_enc_build_huff(ra8_jpeg_enc_ctx_t* e,
                                          uint16_t*           total_dc_l,
                                          uint16_t*           total_ac_l,
                                          uint16_t*           total_dc_c,
                                          uint16_t*           total_ac_c);

RA8_PRIV void priv_jpeg_sw_enc_headers(ra8_jpeg_enc_ctx_t* e,
                                       uint16_t            w,
                                       uint16_t            h,
                                       uint16_t            total_dc_l,
                                       uint16_t            total_ac_l,
                                       uint16_t            total_dc_c,
                                       uint16_t            total_ac_c);