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

Macro Definition Documentation

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

Definition at line 41 of file jchuff.c.

#define emit_byte	(		state,
			val,
			action
	)

Value:

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

Definition at line 239 of file jchuff.c.

#define JPEG_INTERNALS

Definition at line 17 of file jchuff.c.

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

Typedef Documentation

typedef huff_entropy_encoder* huff_entropy_ptr

Definition at line 74 of file jchuff.c.

Function Documentation

LOCAL boolean dump_buffer

(

working_state *

state

)

Definition at line 247 of file jchuff.c.

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

Definition at line 271 of file jchuff.c.

LOCAL boolean emit_restart	(	working_state *	state,
		int	restart_num
	)

Definition at line 412 of file jchuff.c.

METHODDEF boolean encode_mcu_gather	(	j_compress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 605 of file jchuff.c.

METHODDEF boolean encode_mcu_huff	(	j_compress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 437 of file jchuff.c.

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

Definition at line 322 of file jchuff.c.

METHODDEF void finish_pass_gather

(

j_compress_ptr

cinfo

)

Definition at line 783 of file jchuff.c.

METHODDEF void finish_pass_huff

(

j_compress_ptr

cinfo

)

Definition at line 494 of file jchuff.c.

LOCAL boolean flush_bits

(

working_state *

state

)

Definition at line 309 of file jchuff.c.

LOCAL void htest_one_block	(	JCOEFPTR	block,
		int	last_dc_val,
		long	dc_counts[],
		long	ac_counts[]
	)

Definition at line 540 of file jchuff.c.

GLOBAL void jinit_huff_encoder

(

j_compress_ptr

cinfo

)

Definition at line 828 of file jchuff.c.

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

Definition at line 642 of file jchuff.c.

GLOBAL void jpeg_make_c_derived_tbl	(	j_compress_ptr	cinfo,
		JHUFF_TBL *	htbl,
		c_derived_tbl **	pdtbl
	)

Definition at line 179 of file jchuff.c.

METHODDEF boolean encode_mcu_AC_refine JPP

(

(j_compress_ptr cinfo, JBLOCKROW *MCU_data)

)

EXTERN void jpeg_abort_compress JPP

(

(j_compress_ptr cinfo)

)

METHODDEF void start_pass_huff	(	j_compress_ptr	cinfo,
		boolean	gather_statistics
	)

Definition at line 106 of file jchuff.c.