Atmel Software Framework

jdhuff.c File Reference
#include "jinclude.h"
#include "jpeglib.h"
#include "jdhuff.h"

Data Structures

struct  huff_entropy_decoder
 
struct  savable_state
 

Macros

#define ASSIGN_STATE(dest, src)   ((dest) = (src))
 
#define HUFF_EXTEND(x, s)   ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))
 
#define JPEG_INTERNALS
 
#define MIN_GET_BITS   (BIT_BUF_SIZE-7)
 

Typedefs

typedef huff_entropy_decoderhuff_entropy_ptr
 

Functions

 decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 
 jinit_huff_decoder (j_decompress_ptr cinfo)
 
 jpeg_fill_bit_buffer (bitread_working_state *state, register bit_buf_type get_buffer, register int bits_left, int nbits)
 
 jpeg_huff_decode (bitread_working_state *state, register bit_buf_type get_buffer, register int bits_left, d_derived_tbl *htbl, int min_bits)
 
 jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, boolean isDC, int tblno, d_derived_tbl **pdtbl)
 
 process_restart (j_decompress_ptr cinfo)
 
 start_pass_huff_decoder (j_decompress_ptr cinfo)
 

Variables

static const int extend_offset [16]
 
static const int extend_test [16]
 

#define ASSIGN_STATE (   dest,
  src 
)    ((dest) = (src))

Referenced by decode_mcu().

#define HUFF_EXTEND (   x,
  s 
)    ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))

Referenced by decode_mcu().

#define JPEG_INTERNALS
#define MIN_GET_BITS   (BIT_BUF_SIZE-7)

Referenced by jpeg_fill_bit_buffer().

jpeg_huff_decode ( bitread_working_state state,
register bit_buf_type  get_buffer,
register int  bits_left,
d_derived_tbl htbl,
int  min_bits 
)

const int extend_offset[16]
static
Initial value:
=
{ 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1,
((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1,
((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1,
((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 }
const int extend_test[16]
static
Initial value:
=
{ 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 }