jpegint.h File Reference

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Classes
struct	jpeg_comp_master
struct	jpeg_c_main_controller
struct	jpeg_c_prep_controller
struct	jpeg_c_coef_controller
struct	jpeg_color_converter
struct	jpeg_downsampler
struct	jpeg_forward_dct
struct	jpeg_entropy_encoder
struct	jpeg_marker_writer
struct	jpeg_decomp_master
struct	jpeg_input_controller
struct	jpeg_d_main_controller
struct	jpeg_d_coef_controller
struct	jpeg_d_post_controller
struct	jpeg_marker_reader
struct	jpeg_entropy_decoder
struct	jpeg_inverse_dct
struct	jpeg_upsampler
struct	jpeg_color_deconverter
struct	jpeg_color_quantizer

Macros
#define	CSTATE_START   100 /* after create_compress */
#define	CSTATE_SCANNING   101 /* start_compress done, write_scanlines OK */
#define	CSTATE_RAW_OK   102 /* start_compress done, write_raw_data OK */
#define	CSTATE_WRCOEFS   103 /* jpeg_write_coefficients done */
#define	DSTATE_START   200 /* after create_decompress */
#define	DSTATE_INHEADER   201 /* reading header markers, no SOS yet */
#define	DSTATE_READY   202 /* found SOS, ready for start_decompress */
#define	DSTATE_PRELOAD   203 /* reading multiscan file in start_decompress*/
#define	DSTATE_PRESCAN   204 /* performing dummy pass for 2-pass quant */
#define	DSTATE_SCANNING   205 /* start_decompress done, read_scanlines OK */
#define	DSTATE_RAW_OK   206 /* start_decompress done, read_raw_data OK */
#define	DSTATE_BUFIMAGE   207 /* expecting jpeg_start_output */
#define	DSTATE_BUFPOST   208 /* looking for SOS/EOI in jpeg_finish_output */
#define	DSTATE_RDCOEFS   209 /* reading file in jpeg_read_coefficients */
#define	DSTATE_STOPPING   210 /* looking for EOI in jpeg_finish_decompress */
#define	MAX(a, b)   ((a) > (b) ? (a) : (b))
#define	MIN(a, b)   ((a) < (b) ? (a) : (b))
#define	SHIFT_TEMPS
#define	RIGHT_SHIFT(x, shft)   ((x) >> (shft))

Enumerations
enum	J_BUF_MODE { JBUF_PASS_THRU, JBUF_SAVE_SOURCE, JBUF_CRANK_DEST, JBUF_SAVE_AND_PASS }

Functions
typedef	JMETHOD (void, inverse_DCT_method_ptr,(j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col))
	EXTERN (void) jinit_compress_master JPP((j_compress_ptr cinfo))
	EXTERN (long) jdiv_round_up JPP((long a

Variables
boolean	transcode_only
boolean	need_full_buffer
long	b
int	source_row
int JSAMPARRAY	output_array
int JSAMPARRAY int	dest_row
int JSAMPARRAY int int	num_rows
int JSAMPARRAY int int JDIMENSION	num_cols
JBLOCKROW	output_row
JBLOCKROW JDIMENSION	num_blocks
size_t	bytestozero
const int	jpeg_natural_order []

Macro Definition Documentation

#define CSTATE_START   100 /* after create_compress */

#define CSTATE_SCANNING   101 /* start_compress done, write_scanlines OK */

#define CSTATE_RAW_OK   102 /* start_compress done, write_raw_data OK */

#define CSTATE_WRCOEFS   103 /* jpeg_write_coefficients done */

#define DSTATE_START   200 /* after create_decompress */

#define DSTATE_INHEADER   201 /* reading header markers, no SOS yet */

#define DSTATE_READY   202 /* found SOS, ready for start_decompress */

#define DSTATE_PRELOAD   203 /* reading multiscan file in start_decompress*/

#define DSTATE_PRESCAN   204 /* performing dummy pass for 2-pass quant */

#define DSTATE_SCANNING   205 /* start_decompress done, read_scanlines OK */

#define DSTATE_RAW_OK   206 /* start_decompress done, read_raw_data OK */

#define DSTATE_BUFIMAGE   207 /* expecting jpeg_start_output */

#define DSTATE_BUFPOST   208 /* looking for SOS/EOI in jpeg_finish_output */

#define DSTATE_RDCOEFS   209 /* reading file in jpeg_read_coefficients */

#define DSTATE_STOPPING   210 /* looking for EOI in jpeg_finish_decompress */

#define MAX	(		a,
			b
	)		((a) > (b) ? (a) : (b))

#define MIN	(		a,
			b
	)		((a) < (b) ? (a) : (b))

#define SHIFT_TEMPS

#define RIGHT_SHIFT	(		x,
			shft
	)		((x) >> (shft))

Enumeration Type Documentation

enum J_BUF_MODE

Enumerator
JBUF_PASS_THRU
JBUF_SAVE_SOURCE
JBUF_CRANK_DEST
JBUF_SAVE_AND_PASS

             {          /* Operating modes for buffer controllers */
    JBUF_PASS_THRU,     /* Plain stripwise operation */
    /* Remaining modes require a full-image buffer to have been created */
    JBUF_SAVE_SOURCE,   /* Run source subobject only, save output */
    JBUF_CRANK_DEST,    /* Run dest subobject only, using saved data */
    JBUF_SAVE_AND_PASS  /* Run both subobjects, save output */
} J_BUF_MODE;

Function Documentation

typedef JMETHOD	(	void	,
		inverse_DCT_method_ptr	,
		(j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)
	)

EXTERN

(

void

)

EXTERN

(

long

)

Variable Documentation

boolean transcode_only

boolean need_full_buffer

long b

int source_row

int JSAMPARRAY output_array

int JSAMPARRAY int dest_row

int JSAMPARRAY int int num_rows

int JSAMPARRAY int int JDIMENSION num_cols

JBLOCKROW output_row

JBLOCKROW JDIMENSION num_blocks

size_t bytestozero

const int jpeg_natural_order[]