jdphuff.cpp File Reference

#include "jinclude.h"
#include "mrpt_jpeglib.h"
#include "jdhuff.h"

Go to the source code of this file.

Classes
struct	savable_state
struct	phuff_entropy_decoder

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

Typedefs
typedef phuff_entropy_decoder *	phuff_entropy_ptr

Functions
decode_mcu_DC_first	JPP ((j_decompress_ptr cinfo, JBLOCKROW *MCU_data))
	start_pass_phuff_decoder (j_decompress_ptr cinfo)
	process_restart (j_decompress_ptr cinfo)
	decode_mcu_DC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
	decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
	decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
	decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
	jinit_phuff_decoder (j_decompress_ptr cinfo)

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

Macro Definition Documentation

ASSIGN_STATE

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

Definition at line 36 of file jdphuff.cpp.

Referenced by decode_mcu_DC_first().

HUFF_EXTEND

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

Definition at line 211 of file jdphuff.cpp.

Referenced by decode_mcu_AC_first(), and decode_mcu_DC_first().

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jdphuff.cpp.

Typedef Documentation

phuff_entropy_ptr

typedef phuff_entropy_decoder* phuff_entropy_ptr

Definition at line 67 of file jdphuff.cpp.

Function Documentation

decode_mcu_AC_first()

decode_mcu_AC_first	(	j_decompress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 357 of file jdphuff.cpp.

References BITREAD_LOAD_STATE, BITREAD_SAVE_STATE, BITREAD_STATE_VARS, CHECK_BIT_BUFFER, phuff_entropy_encoder::EOBRUN, FALSE, GET_BITS, HUFF_DECODE, HUFF_EXTEND, jpeg_natural_order, process_restart(), phuff_entropy_encoder::pub, phuff_entropy_encoder::restarts_to_go, and TRUE.

Referenced by start_pass_phuff_decoder().

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decode_mcu_AC_refine()

decode_mcu_AC_refine	(	j_decompress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 500 of file jdphuff.cpp.

References BITREAD_LOAD_STATE, BITREAD_SAVE_STATE, BITREAD_STATE_VARS, CHECK_BIT_BUFFER, DCTSIZE2, phuff_entropy_encoder::EOBRUN, FALSE, GET_BITS, HUFF_DECODE, jpeg_natural_order, process_restart(), phuff_entropy_encoder::pub, phuff_entropy_encoder::restarts_to_go, TRUE, and WARNMS.

Referenced by start_pass_phuff_decoder().

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decode_mcu_DC_first()

decode_mcu_DC_first	(	j_decompress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 284 of file jdphuff.cpp.

References ASSIGN_STATE, BITREAD_LOAD_STATE, BITREAD_SAVE_STATE, BITREAD_STATE_VARS, CHECK_BIT_BUFFER, compptr, jpeg_component_info::dc_tbl_no, phuff_entropy_encoder::derived_tbls, FALSE, GET_BITS, HUFF_DECODE, HUFF_EXTEND, process_restart(), phuff_entropy_encoder::pub, phuff_entropy_encoder::restarts_to_go, and TRUE.

Referenced by start_pass_phuff_decoder().

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decode_mcu_DC_refine()

decode_mcu_DC_refine	(	j_decompress_ptr	cinfo,
		JBLOCKROW *	MCU_data
	)

Definition at line 451 of file jdphuff.cpp.

References BITREAD_LOAD_STATE, BITREAD_SAVE_STATE, BITREAD_STATE_VARS, CHECK_BIT_BUFFER, FALSE, GET_BITS, process_restart(), phuff_entropy_encoder::restarts_to_go, and TRUE.

Referenced by start_pass_phuff_decoder().

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jinit_phuff_decoder()

jinit_phuff_decoder

(

j_decompress_ptr

cinfo

)

Definition at line 674 of file jdphuff.cpp.

References DCTSIZE2, phuff_entropy_encoder::derived_tbls, JPOOL_IMAGE, NUM_HUFF_TBLS, phuff_entropy_encoder::pub, SIZEOF, and start_pass_phuff_decoder().

Referenced by master_selection(), and transdecode_master_selection().

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JPP()

decode_mcu_AC_refine JPP

(

(j_decompress_ptr cinfo, JBLOCKROW *MCU_data)

)

process_restart()

process_restart

(

j_decompress_ptr

cinfo

)

Definition at line 229 of file jdphuff.cpp.

References phuff_entropy_encoder::EOBRUN, FALSE, phuff_entropy_encoder::last_dc_val, phuff_entropy_encoder::pub, phuff_entropy_encoder::restarts_to_go, and TRUE.

Referenced by decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), and decode_mcu_DC_refine().

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start_pass_phuff_decoder()

start_pass_phuff_decoder

(

j_decompress_ptr

cinfo

)

Definition at line 84 of file jdphuff.cpp.

References jpeg_component_info::ac_tbl_no, compptr, jpeg_component_info::dc_tbl_no, DCTSIZE2, decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), decode_mcu_DC_refine(), phuff_entropy_encoder::derived_tbls, phuff_entropy_encoder::EOBRUN, ERREXIT4, FALSE, jpeg_make_d_derived_tbl(), phuff_entropy_encoder::last_dc_val, phuff_entropy_encoder::pub, phuff_entropy_encoder::restarts_to_go, TRUE, and WARNMS2.

Referenced by jinit_phuff_decoder().

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Variable Documentation

extend_offset

const int extend_offset[16]

static

Initial value:

= 
        {0,     -1,   -3,       -7,     -15,   -31,   -63,      -127,
         -255, -511, -1023, -2047, -4095, -8191, -16383, -32767}

Definition at line 217 of file jdphuff.cpp.

extend_test

const int extend_test[16]

static

Initial value:

= 
        {0,              0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040,
         0x0080, 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000}

Definition at line 213 of file jdphuff.cpp.