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jpeglib.h File Reference

#include "jmorecfg.h"
#include "jconfig.h"
#include "jpegint.h"
#include "jerror.h"


Data Structures
struct	jpeg_destination_mgr
struct	JHUFF_TBL
struct	jpeg_common_struct
struct	jpeg_component_info
struct	jpeg_compress_struct
struct	jpeg_decompress_struct
struct	jpeg_error_mgr
struct	jpeg_marker_struct
struct	jpeg_memory_mgr
struct	jpeg_progress_mgr
struct	jpeg_scan_info
struct	jpeg_source_mgr
struct	JQUANT_TBL
Defines
#define	JPEG_LIB_VERSION 62
#define	DCTSIZE 8
#define	DCTSIZE2 64
#define	NUM_QUANT_TBLS 4
#define	NUM_HUFF_TBLS 4
#define	NUM_ARITH_TBLS 16
#define	MAX_COMPS_IN_SCAN 4
#define	MAX_SAMP_FACTOR 4
#define	C_MAX_BLOCKS_IN_MCU 10
#define	D_MAX_BLOCKS_IN_MCU 10
#define	JDCT_DEFAULT JDCT_ISLOW
#define	JDCT_FASTEST JDCT_IFAST
#define	jpeg_common_fields
#define	JMSG_LENGTH_MAX 200
#define	JMSG_STR_PARM_MAX 80
#define	JPOOL_PERMANENT 0
#define	JPOOL_IMAGE 1
#define	JPOOL_NUMPOOLS 2
#define	JPP(arglist) ()
#define	jpeg_create_compress(cinfo)
#define	jpeg_create_decompress(cinfo)
#define	JPEG_SUSPENDED 0
#define	JPEG_HEADER_OK 1
#define	JPEG_HEADER_TABLES_ONLY 2
#define	JPEG_REACHED_SOS 1
#define	JPEG_REACHED_EOI 2
#define	JPEG_ROW_COMPLETED 3
#define	JPEG_SCAN_COMPLETED 4
#define	JPEG_RST0 0xD0
#define	JPEG_EOI 0xD9
#define	JPEG_APP0 0xE0
#define	JPEG_COM 0xFE
Typedefs
typedef JSAMPLE FAR *	JSAMPROW
typedef JSAMPROW *	JSAMPARRAY
typedef JSAMPARRAY *	JSAMPIMAGE
typedef JCOEF	JBLOCK [DCTSIZE2]
typedef JBLOCK FAR *	JBLOCKROW
typedef JBLOCKROW *	JBLOCKARRAY
typedef JBLOCKARRAY *	JBLOCKIMAGE
typedef JCOEF FAR *	JCOEFPTR
typedef jpeg_marker_struct FAR *	jpeg_saved_marker_ptr
typedef jpeg_common_struct *	j_common_ptr
typedef jpeg_compress_struct *	j_compress_ptr
typedef jpeg_decompress_struct *	j_decompress_ptr
typedef jvirt_sarray_control *	jvirt_sarray_ptr
typedef jvirt_barray_control *	jvirt_barray_ptr
Enumerations
enum	J_COLOR_SPACE { JCS_UNKNOWN, JCS_GRAYSCALE, JCS_RGB, JCS_YCbCr, JCS_CMYK, JCS_YCCK }
enum	J_DCT_METHOD { JDCT_ISLOW, JDCT_IFAST, JDCT_FLOAT }
enum	J_DITHER_MODE { JDITHER_NONE, JDITHER_ORDERED, JDITHER_FS }
Functions
typedef	JMETHOD (boolean, jpeg_marker_parser_method,(j_decompress_ptr cinfo))
	EXTERN (struct jpeg_error_mgr ) jpeg_std_error JPP((struct jpeg_error_mgr err))
	EXTERN (void) jpeg_CreateCompress JPP((j_compress_ptr cinfo
	EXTERN (int) jpeg_quality_scaling JPP((int quality))
	EXTERN (JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo))
	EXTERN (JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo))
	EXTERN (JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo
	EXTERN (boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo))
	EXTERN (jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo))
Variables
int	version
int size_t	structsize
FILE *	outfile
FILE *	infile
J_COLOR_SPACE	colorspace
int	quality
int boolean	force_baseline
int	scale_factor
int	which_tbl
int const unsigned int *	basic_table
boolean	suppress
boolean	write_all_tables
JSAMPARRAY	scanlines
JSAMPARRAY JDIMENSION	num_lines
JSAMPIMAGE	data
int	marker
int const JOCTET *	dataptr
int const JOCTET unsigned int	datalen
int	val
boolean	require_image
JSAMPARRAY JDIMENSION	max_lines
int	scan_number
int	marker_code
int unsigned int	length_limit
int jpeg_marker_parser_method	routine
jvirt_barray_ptr *	coef_arrays
j_compress_ptr	dstinfo
int	desired

Define Documentation

#define C_MAX_BLOCKS_IN_MCU 10

Definition at line 55 of file jpeglib.h.

Referenced by compress_output(), jinit_c_coef_controller(), per_scan_setup(), and transencode_coef_controller().

#define D_MAX_BLOCKS_IN_MCU 10

Definition at line 57 of file jpeglib.h.

Referenced by jinit_d_coef_controller(), and per_scan_setup().

#define DCTSIZE 8

Definition at line 41 of file jpeglib.h.

#define DCTSIZE2 64

Definition at line 42 of file jpeglib.h.

#define JDCT_DEFAULT JDCT_ISLOW

Definition at line 224 of file jpeglib.h.

Referenced by default_decompress_parms(), and jpeg_set_defaults().

#define JDCT_FASTEST JDCT_IFAST

Definition at line 227 of file jpeglib.h.

#define JMSG_LENGTH_MAX 200

Definition at line 652 of file jpeglib.h.

#define JMSG_STR_PARM_MAX 80

Definition at line 660 of file jpeglib.h.

#define JPEG_APP0 0xE0

Definition at line 1047 of file jpeglib.h.

Referenced by jcopy_markers_execute(), and jcopy_markers_setup().

#define JPEG_COM 0xFE

Definition at line 1048 of file jpeglib.h.

Referenced by jcopy_markers_setup().

#define jpeg_common_fields

Value:

struct jpeg_error_mgr * err;     \
  struct jpeg_memory_mgr * mem;  \
  struct jpeg_progress_mgr * progress;  \
  void * client_data;            \
  boolean is_decompressor;       \
  int global_state

Definition at line 241 of file jpeglib.h.

#define jpeg_create_compress

(

cinfo

)

Value:

jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \
                        (size_t) sizeof(struct jpeg_compress_struct))

Definition at line 894 of file jpeglib.h.

Referenced by main(), and write_JPEG_file().

#define jpeg_create_decompress

(

cinfo

)

Value:

jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \
                          (size_t) sizeof(struct jpeg_decompress_struct))

Definition at line 897 of file jpeglib.h.

Referenced by main(), and read_JPEG_file().

#define JPEG_EOI 0xD9

Definition at line 1046 of file jpeglib.h.

Referenced by fill_input_buffer().

#define JPEG_HEADER_OK 1

Definition at line 966 of file jpeglib.h.

Referenced by jpeg_read_header().

#define JPEG_HEADER_TABLES_ONLY 2

Definition at line 967 of file jpeglib.h.

Referenced by jpeg_read_header().

#define JPEG_LIB_VERSION 62

Definition at line 33 of file jpeglib.h.

Referenced by jpeg_CreateCompress(), and jpeg_CreateDecompress().

#define JPEG_REACHED_EOI 2

Definition at line 997 of file jpeglib.h.

Referenced by consume_markers(), jpeg_read_coefficients(), jpeg_read_header(), jpeg_start_decompress(), and read_markers().

#define JPEG_REACHED_SOS 1

Definition at line 996 of file jpeglib.h.

Referenced by consume_markers(), jpeg_consume_input(), jpeg_read_coefficients(), jpeg_read_header(), jpeg_start_decompress(), and read_markers().

#define JPEG_ROW_COMPLETED 3

Definition at line 998 of file jpeglib.h.

Referenced by consume_data(), decompress_data(), decompress_onepass(), decompress_smooth_data(), jpeg_read_coefficients(), and jpeg_start_decompress().

#define JPEG_RST0 0xD0

Definition at line 1045 of file jpeglib.h.

Referenced by emit_restart().

#define JPEG_SCAN_COMPLETED 4

Definition at line 999 of file jpeglib.h.

Referenced by consume_data(), decompress_data(), decompress_onepass(), and decompress_smooth_data().

#define JPEG_SUSPENDED 0

Definition at line 965 of file jpeglib.h.

Referenced by consume_data(), consume_markers(), decompress_data(), decompress_onepass(), decompress_smooth_data(), dummy_consume_data(), jpeg_consume_input(), jpeg_finish_decompress(), jpeg_finish_output(), jpeg_read_coefficients(), jpeg_read_header(), jpeg_start_decompress(), and read_markers().

#define JPOOL_IMAGE 1

Definition at line 749 of file jpeglib.h.

Referenced by alloc_fs_workspace(), alloc_funny_pointers(), build_ycc_rgb_table(), create_colorindex(), create_colormap(), create_context_buffer(), free_pool(), get_sof(), init_destination(), init_error_limit(), jinit_1pass_quantizer(), jinit_2pass_quantizer(), jinit_c_coef_controller(), jinit_c_main_controller(), jinit_c_master_control(), jinit_c_prep_controller(), jinit_color_converter(), jinit_color_deconverter(), jinit_d_coef_controller(), jinit_d_main_controller(), jinit_d_post_controller(), jinit_downsampler(), jinit_forward_dct(), jinit_huff_decoder(), jinit_huff_encoder(), jinit_inverse_dct(), jinit_marker_writer(), jinit_master_decompress(), jinit_merged_upsampler(), jinit_phuff_decoder(), jinit_phuff_encoder(), jinit_upsampler(), jpeg_make_c_derived_tbl(), jpeg_make_d_derived_tbl(), jtransform_request_workspace(), latch_quant_tables(), make_odither_array(), prepare_range_limit_table(), read_color_map(), read_JPEG_file(), read_scan_script(), realize_virt_arrays(), request_virt_barray(), request_virt_sarray(), rgb_ycc_start(), save_marker(), select_colors(), smoothing_ok(), start_pass_2_quant(), start_pass_fdctmgr(), start_pass_huff(), start_pass_phuff(), and transencode_coef_controller().

#define JPOOL_NUMPOOLS 2

Definition at line 750 of file jpeglib.h.

Referenced by alloc_large(), alloc_small(), free_pool(), jinit_memory_mgr(), jpeg_abort(), and self_destruct().

#define JPOOL_PERMANENT 0

Definition at line 748 of file jpeglib.h.

Referenced by jinit_input_controller(), jinit_marker_reader(), jinit_memory_mgr(), jpeg_abort(), jpeg_alloc_huff_table(), jpeg_alloc_quant_table(), jpeg_set_defaults(), jpeg_simple_progression(), and self_destruct().

#define JPP

(

arglist

)

()

Definition at line 820 of file jpeglib.h.

#define MAX_COMPS_IN_SCAN 4

Definition at line 46 of file jpeglib.h.

Referenced by compress_output(), consume_data(), fill_dc_scans(), get_sos(), jpeg_simple_progression(), per_scan_setup(), read_scan_script(), select_scan_parameters(), and validate_script().

#define MAX_SAMP_FACTOR 4

Definition at line 47 of file jpeglib.h.

Referenced by initial_setup().

#define NUM_ARITH_TBLS 16

Definition at line 45 of file jpeglib.h.

Referenced by emit_dac(), get_soi(), and jpeg_set_defaults().

#define NUM_HUFF_TBLS 4

Definition at line 44 of file jpeglib.h.

Referenced by finish_pass_gather(), finish_pass_gather_phuff(), get_dht(), jinit_huff_decoder(), jinit_huff_encoder(), jinit_phuff_decoder(), jinit_phuff_encoder(), jpeg_CreateCompress(), jpeg_CreateDecompress(), jpeg_make_c_derived_tbl(), jpeg_make_d_derived_tbl(), jpeg_suppress_tables(), start_pass_huff(), start_pass_phuff(), and write_tables_only().

#define NUM_QUANT_TBLS 4

Definition at line 43 of file jpeglib.h.

Referenced by get_dqt(), jinit_forward_dct(), jpeg_add_quant_table(), jpeg_copy_critical_parameters(), jpeg_CreateCompress(), jpeg_CreateDecompress(), jpeg_suppress_tables(), latch_quant_tables(), read_quant_tables(), set_quant_slots(), start_pass_fdctmgr(), transpose_critical_parameters(), and write_tables_only().

Typedef Documentation

typedef struct jpeg_common_struct* j_common_ptr

Definition at line 261 of file jpeglib.h.

typedef struct jpeg_compress_struct* j_compress_ptr

Definition at line 262 of file jpeglib.h.

typedef struct jpeg_decompress_struct* j_decompress_ptr

Definition at line 263 of file jpeglib.h.

typedef JCOEF JBLOCK[DCTSIZE2]

Definition at line 70 of file jpeglib.h.

Referenced by access_virt_barray(), alloc_barray(), compress_data(), compress_first_pass(), decompress_onepass(), decompress_smooth_data(), do_barray_io(), jinit_c_coef_controller(), jinit_d_coef_controller(), realize_virt_arrays(), and transencode_coef_controller().

typedef JBLOCKROW* JBLOCKARRAY

Definition at line 72 of file jpeglib.h.

Referenced by alloc_barray(), compress_first_pass(), compress_output(), consume_data(), decompress_data(), decompress_smooth_data(), do_flip_h(), do_flip_v(), do_rot_180(), do_rot_270(), do_rot_90(), do_transpose(), and do_transverse().

typedef JBLOCKARRAY* JBLOCKIMAGE

Definition at line 73 of file jpeglib.h.

typedef JBLOCK FAR* JBLOCKROW

Definition at line 71 of file jpeglib.h.

Referenced by alloc_barray(), compress_first_pass(), compress_output(), consume_data(), decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), decode_mcu_DC_refine(), decompress_data(), decompress_smooth_data(), do_flip_v(), do_rot_180(), encode_mcu_AC_first(), encode_mcu_AC_refine(), encode_mcu_DC_first(), encode_mcu_DC_refine(), encode_mcu_gather(), encode_mcu_huff(), forward_DCT(), forward_DCT_float(), jcopy_block_row(), jinit_c_coef_controller(), jinit_d_coef_controller(), and transencode_coef_controller().

typedef JCOEF FAR* JCOEFPTR

Definition at line 75 of file jpeglib.h.

Referenced by decode_mcu_AC_refine(), do_flip_h(), do_flip_v(), do_rot_180(), do_rot_270(), do_rot_90(), do_transpose(), do_transverse(), encode_one_block(), forward_DCT(), forward_DCT_float(), htest_one_block(), jcopy_block_row(), jpeg_idct_1x1(), jpeg_idct_2x2(), jpeg_idct_4x4(), jpeg_idct_float(), jpeg_idct_ifast(), and jpeg_idct_islow().

typedef struct jpeg_marker_struct FAR* jpeg_saved_marker_ptr

Definition at line 193 of file jpeglib.h.

Referenced by jcopy_markers_execute(), and save_marker().

typedef JSAMPROW* JSAMPARRAY

Definition at line 67 of file jpeglib.h.

Referenced by alloc_funny_pointers(), alloc_sarray(), cmyk_ycck_convert(), color_quantize(), color_quantize3(), create_colormap(), create_context_buffer(), decompress_data(), decompress_onepass(), decompress_smooth_data(), expand_bottom_edge(), expand_right_edge(), forward_DCT(), forward_DCT_float(), fullsize_downsample(), fullsize_smooth_downsample(), fullsize_upsample(), gray_rgb_convert(), grayscale_convert(), h2v1_downsample(), h2v1_fancy_upsample(), h2v1_merged_upsample(), h2v1_upsample(), h2v2_downsample(), h2v2_fancy_upsample(), h2v2_merged_upsample(), h2v2_smooth_downsample(), h2v2_upsample(), int_downsample(), int_upsample(), jcopy_sample_rows(), jpeg_idct_1x1(), jpeg_idct_2x2(), jpeg_idct_4x4(), jpeg_idct_float(), jpeg_idct_ifast(), jpeg_idct_islow(), jpeg_read_scanlines(), jpeg_write_scanlines(), make_funny_pointers(), merged_1v_upsample(), merged_2v_upsample(), noop_upsample(), null_convert(), pass2_fs_dither(), pass2_no_dither(), post_process_1pass(), post_process_2pass(), post_process_prepass(), pre_process_context(), pre_process_data(), prescan_quantize(), process_data_context_main(), process_data_crank_post(), process_data_simple_main(), quantize3_ord_dither(), quantize_fs_dither(), quantize_ord_dither(), read_JPEG_file(), rgb_gray_convert(), rgb_ycc_convert(), sep_downsample(), sep_upsample(), set_bottom_pointers(), set_wraparound_pointers(), ycc_rgb_convert(), and ycck_cmyk_convert().

typedef JSAMPARRAY* JSAMPIMAGE

Definition at line 68 of file jpeglib.h.

Referenced by cmyk_ycck_convert(), compress_data(), compress_first_pass(), compress_output(), decompress_data(), decompress_onepass(), decompress_smooth_data(), gray_rgb_convert(), grayscale_convert(), h2v1_merged_upsample(), h2v2_merged_upsample(), jpeg_read_raw_data(), jpeg_write_raw_data(), merged_1v_upsample(), merged_2v_upsample(), null_convert(), post_process_1pass(), post_process_2pass(), post_process_prepass(), pre_process_context(), pre_process_data(), rgb_gray_convert(), rgb_ycc_convert(), sep_downsample(), sep_upsample(), ycc_rgb_convert(), and ycck_cmyk_convert().

typedef JSAMPLE FAR* JSAMPROW

Definition at line 66 of file jpeglib.h.

Referenced by add_map_entry(), alloc_funny_pointers(), alloc_sarray(), cmyk_ycck_convert(), color_quantize(), color_quantize3(), create_colorindex(), create_context_buffer(), expand_right_edge(), forward_DCT(), forward_DCT_float(), fullsize_smooth_downsample(), gray_rgb_convert(), grayscale_convert(), h2v1_downsample(), h2v1_fancy_upsample(), h2v1_merged_upsample(), h2v1_upsample(), h2v2_downsample(), h2v2_fancy_upsample(), h2v2_merged_upsample(), h2v2_smooth_downsample(), h2v2_upsample(), int_downsample(), int_upsample(), jcopy_sample_rows(), jpeg_idct_2x2(), jpeg_idct_4x4(), jpeg_idct_float(), jpeg_idct_ifast(), jpeg_idct_islow(), merged_2v_upsample(), null_convert(), pass2_fs_dither(), pass2_no_dither(), prescan_quantize(), quantize3_ord_dither(), quantize_fs_dither(), quantize_ord_dither(), rgb_gray_convert(), rgb_ycc_convert(), write_JPEG_file(), ycc_rgb_convert(), and ycck_cmyk_convert().

typedef struct jvirt_barray_control* jvirt_barray_ptr

Definition at line 753 of file jpeglib.h.

typedef struct jvirt_sarray_control* jvirt_sarray_ptr

Definition at line 752 of file jpeglib.h.

Enumeration Type Documentation

enum J_COLOR_SPACE

Enumeration values:

JCS_UNKNOWN
JCS_GRAYSCALE
JCS_RGB
JCS_YCbCr
JCS_CMYK
JCS_YCCK

Definition at line 206 of file jpeglib.h.

Referenced by jpeg_set_colorspace().

00206              {
00207         JCS_UNKNOWN,            /* error/unspecified */
00208         JCS_GRAYSCALE,          /* monochrome */
00209         JCS_RGB,                /* red/green/blue */
00210         JCS_YCbCr,              /* Y/Cb/Cr (also known as YUV) */
00211         JCS_CMYK,               /* C/M/Y/K */
00212         JCS_YCCK                /* Y/Cb/Cr/K */
00213 } J_COLOR_SPACE;

enum J_DCT_METHOD

Enumeration values:

JDCT_ISLOW
JDCT_IFAST
JDCT_FLOAT

Definition at line 217 of file jpeglib.h.

00217              {
00218         JDCT_ISLOW,             /* slow but accurate integer algorithm */
00219         JDCT_IFAST,             /* faster, less accurate integer method */
00220         JDCT_FLOAT              /* floating-point: accurate, fast on fast HW */
00221 } J_DCT_METHOD;

enum J_DITHER_MODE

Enumeration values:

JDITHER_NONE
JDITHER_ORDERED
JDITHER_FS

Definition at line 232 of file jpeglib.h.

00232              {
00233         JDITHER_NONE,           /* no dithering */
00234         JDITHER_ORDERED,        /* simple ordered dither */
00235         JDITHER_FS              /* Floyd-Steinberg error diffusion dither */
00236 } J_DITHER_MODE;