jdmarker.c File Reference

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

Go to the source code of this file.

Classes
struct	my_marker_reader

Macros
#define	JPEG_INTERNALS
#define	INPUT_VARS(cinfo)
#define	INPUT_SYNC(cinfo)
#define	INPUT_RELOAD(cinfo)
#define	MAKE_BYTE_AVAIL(cinfo, action)
#define	INPUT_BYTE(cinfo, V, action)
#define	INPUT_2BYTES(cinfo, V, action)
#define	get_dac(cinfo)
#define	APP0_DATA_LEN   14 /* Length of interesting data in APP0 */
#define	APP14_DATA_LEN   12 /* Length of interesting data in APP14 */
#define	APPN_DATA_LEN   14 /* Must be the largest of the above!! */

Typedefs
typedef my_marker_reader *	my_marker_ptr2

Functions
	get_soi (j_decompress_ptr cinfo)
	get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)
	get_sos (j_decompress_ptr cinfo)
	get_dht (j_decompress_ptr cinfo)
	get_dqt (j_decompress_ptr cinfo)
	get_dri (j_decompress_ptr cinfo)
	examine_app0 (j_decompress_ptr cinfo, JOCTET FAR *data, unsigned int datalen, INT32 remaining)
	examine_app14 (j_decompress_ptr cinfo, JOCTET FAR *data, unsigned int datalen, INT32 remaining)
	get_interesting_appn (j_decompress_ptr cinfo)
	save_marker (j_decompress_ptr cinfo)
	skip_variable (j_decompress_ptr cinfo)
	next_marker (j_decompress_ptr cinfo)
	first_marker (j_decompress_ptr cinfo)
	read_markers (j_decompress_ptr cinfo)
	read_restart_marker (j_decompress_ptr cinfo)
	jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired)
	reset_marker_reader (j_decompress_ptr cinfo)
	jinit_marker_reader (j_decompress_ptr cinfo)
	jpeg_save_markers (j_decompress_ptr cinfo, int marker_code, unsigned int length_limit)
	jpeg_set_marker_processor (j_decompress_ptr cinfo, int marker_code, jpeg_marker_parser_method routine)

Macro Definition Documentation

APP0_DATA_LEN

#define APP0_DATA_LEN   14 /* Length of interesting data in APP0 */

APP14_DATA_LEN

#define APP14_DATA_LEN   12 /* Length of interesting data in APP14 */

APPN_DATA_LEN

#define APPN_DATA_LEN   14 /* Must be the largest of the above!! */

get_dac

#define get_dac

(

cinfo

)

Value:

skip_variable(cinfo)

INPUT_2BYTES

#define INPUT_2BYTES	(		cinfo,
			V,
			action )

Value:

MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \
          bytes_in_buffer--; \
          V = ((unsigned int) GETJOCTET(*next_input_byte++)) << 8; \
          MAKE_BYTE_AVAIL(cinfo,action); \
          bytes_in_buffer--; \
          V += GETJOCTET(*next_input_byte++); )

INPUT_BYTE

#define INPUT_BYTE	(		cinfo,
			V,
			action )

Value:

MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \
          bytes_in_buffer--; \
          V = GETJOCTET(*next_input_byte++); )

INPUT_RELOAD

#define INPUT_RELOAD

(

cinfo

)

Value:

( next_input_byte = datasrc->next_input_byte,  \
  bytes_in_buffer = datasrc->bytes_in_buffer )

INPUT_SYNC

#define INPUT_SYNC

(

cinfo

)

Value:

( datasrc->next_input_byte = next_input_byte,  \
  datasrc->bytes_in_buffer = bytes_in_buffer )

INPUT_VARS

#define INPUT_VARS

(

cinfo

)

Value:

struct jpeg_source_mgr * datasrc = (cinfo)->src;  \
const JOCTET * next_input_byte = datasrc->next_input_byte;  \
size_t bytes_in_buffer = datasrc->bytes_in_buffer

JPEG_INTERNALS

#define JPEG_INTERNALS

MAKE_BYTE_AVAIL

#define MAKE_BYTE_AVAIL	(		cinfo,
			action )

Value:

if (bytes_in_buffer == 0) {  \
  if (! (*datasrc->fill_input_buffer) (cinfo))  \
    { action; }  \
  INPUT_RELOAD(cinfo);  \
}

Typedef Documentation

my_marker_ptr2

typedef my_marker_reader* my_marker_ptr2

Function Documentation

examine_app0()

examine_app0	(	j_decompress_ptr	cinfo,
		JOCTET FAR *	data,
		unsigned int	datalen,
		INT32	remaining )

examine_app14()

examine_app14	(	j_decompress_ptr	cinfo,
		JOCTET FAR *	data,
		unsigned int	datalen,
		INT32	remaining )

first_marker()

first_marker

(

j_decompress_ptr

cinfo

)

get_dht()

get_dht

(

j_decompress_ptr

cinfo

)

get_dqt()

get_dqt

(

j_decompress_ptr

cinfo

)

get_dri()

get_dri

(

j_decompress_ptr

cinfo

)

get_interesting_appn()

get_interesting_appn

(

j_decompress_ptr

cinfo

)

get_sof()

get_sof	(	j_decompress_ptr	cinfo,
		boolean	is_prog,
		boolean	is_arith )

get_soi()

get_soi

(

j_decompress_ptr

cinfo

)

get_sos()

get_sos

(

j_decompress_ptr

cinfo

)

jinit_marker_reader()

jinit_marker_reader

(

j_decompress_ptr

cinfo

)

jpeg_resync_to_restart()

jpeg_resync_to_restart	(	j_decompress_ptr	cinfo,
		int	desired )

jpeg_save_markers()

jpeg_save_markers	(	j_decompress_ptr	cinfo,
		int	marker_code,
		unsigned int	length_limit )

jpeg_set_marker_processor()

jpeg_set_marker_processor	(	j_decompress_ptr	cinfo,
		int	marker_code,
		jpeg_marker_parser_method	routine )

next_marker()

next_marker

(

j_decompress_ptr

cinfo

)

read_markers()

read_markers

(

j_decompress_ptr

cinfo

)

read_restart_marker()

read_restart_marker

(

j_decompress_ptr

cinfo

)

reset_marker_reader()

reset_marker_reader

(

j_decompress_ptr

cinfo

)

save_marker()

save_marker

(

j_decompress_ptr

cinfo

)

skip_variable()

skip_variable

(

j_decompress_ptr

cinfo

)