jchuff.c File Reference

#include "jinclude.h"
#include "jpeglib.h"
#include "jchuff.h"

Go to the source code of this file.

Classes
struct	savable_state
struct	huff_entropy_encoder
struct	working_state

Macros
#define	JPEG_INTERNALS
#define	ASSIGN_STATE(dest, src)
#define	emit_byte(state, val, action)
#define	MAX_CLEN   32 /* assumed maximum initial code length */

Typedefs
typedef huff_entropy_encoder *	huff_entropy_ptr

Functions
	METHODDEF (boolean)
	jpeg_make_c_derived_tbl (j_compress_ptr cinfo, boolean isDC, int tblno, c_derived_tbl **pdtbl)
	dump_buffer (working_state *state)
INLINE	emit_bits (working_state *state, unsigned int code, int size)
	flush_bits (working_state *state)
	encode_one_block (working_state *state, JCOEFPTR block, int last_dc_val, c_derived_tbl *dctbl, c_derived_tbl *actbl)
	emit_restart (working_state *state, int restart_num)
	encode_mcu_huff (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
	finish_pass_huff (j_compress_ptr cinfo)
	htest_one_block (j_compress_ptr cinfo, JCOEFPTR block, int last_dc_val, long dc_counts[], long ac_counts[])
	encode_mcu_gather (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
	jpeg_gen_optimal_table (j_compress_ptr cinfo, JHUFF_TBL *htbl, long freq[])
	finish_pass_gather (j_compress_ptr cinfo)
	jinit_huff_encoder (j_compress_ptr cinfo)

Macro Definition Documentation

ASSIGN_STATE

#define ASSIGN_STATE	(		dest,
			src )

Value:

((dest) = (src))

emit_byte

#define emit_byte	(		state,
			val,
			action )

Value:

{ *(state)->next_output_byte++ = (JOCTET) (val);  \
  if (--(state)->free_in_buffer == 0)  \
    if (! dump_buffer(state))  \
      { action; } }

JPEG_INTERNALS

#define JPEG_INTERNALS

MAX_CLEN

#define MAX_CLEN   32 /* assumed maximum initial code length */

Typedef Documentation

huff_entropy_ptr

typedef huff_entropy_encoder* huff_entropy_ptr

Function Documentation

dump_buffer()

dump_buffer

(

working_state *

state

)

emit_bits()

INLINE emit_bits	(	working_state *	state,
		unsigned int	code,
		int	size )

emit_restart()

emit_restart	(	working_state *	state,
		int	restart_num )

encode_mcu_gather()

encode_mcu_gather	(	j_compress_ptr	cinfo,
		JBLOCKROW *	MCU_data )

encode_mcu_huff()

encode_mcu_huff	(	j_compress_ptr	cinfo,
		JBLOCKROW *	MCU_data )

encode_one_block()

encode_one_block	(	working_state *	state,
		JCOEFPTR	block,
		int	last_dc_val,
		c_derived_tbl *	dctbl,
		c_derived_tbl *	actbl )

finish_pass_gather()

finish_pass_gather

(

j_compress_ptr

cinfo

)

finish_pass_huff()

finish_pass_huff

(

j_compress_ptr

cinfo

)

flush_bits()

flush_bits

(

working_state *

state

)

htest_one_block()

htest_one_block	(	j_compress_ptr	cinfo,
		JCOEFPTR	block,
		int	last_dc_val,
		long	dc_counts[],
		long	ac_counts[] )

jinit_huff_encoder()

jinit_huff_encoder

(

j_compress_ptr

cinfo

)

jpeg_gen_optimal_table()

jpeg_gen_optimal_table	(	j_compress_ptr	cinfo,
		JHUFF_TBL *	htbl,
		long	freq[] )

jpeg_make_c_derived_tbl()

jpeg_make_c_derived_tbl	(	j_compress_ptr	cinfo,
		boolean	isDC,
		int	tblno,
		c_derived_tbl **	pdtbl )

METHODDEF()

METHODDEF

(

boolean

)