jdcoefct.c File Reference

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

Go to the source code of this file.

Macros
#define	JPEG_INTERNALS
#define	SAVED_COEFS   6 /* we save coef_bits[0..5] */
#define	Q01_POS   1
#define	Q10_POS   8
#define	Q20_POS   16
#define	Q11_POS   9
#define	Q02_POS   2

Typedefs
typedef my_coef_controller *	my_coef_ptr

Functions
	METHODDEF (int)
	start_input_pass (j_decompress_ptr cinfo)
	start_output_pass (j_decompress_ptr cinfo)
	decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
	dummy_consume_data (j_decompress_ptr cinfo)
	consume_data (j_decompress_ptr cinfo)
	decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
	smoothing_ok (j_decompress_ptr cinfo)
	decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
	jinit_d_coef_controller (j_decompress_ptr cinfo, boolean need_full_buffer)

Macro Definition Documentation

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 17 of file jdcoefct.c.

Q01_POS

#define Q01_POS   1

Definition at line 390 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

Q02_POS

#define Q02_POS   2

Definition at line 394 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

Q10_POS

#define Q10_POS   8

Definition at line 391 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

Q11_POS

#define Q11_POS   9

Definition at line 393 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

Q20_POS

#define Q20_POS   16

Definition at line 392 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

SAVED_COEFS

#define SAVED_COEFS   6 /* we save coef_bits[0..5] */

Definition at line 58 of file jdcoefct.c.

Referenced by decompress_smooth_data(), and smoothing_ok().

Typedef Documentation

my_coef_ptr

typedef my_coef_controller* my_coef_ptr

Definition at line 62 of file jdcoefct.c.

Function Documentation

consume_data()

consume_data

(

j_decompress_ptr

cinfo

)

Definition at line 244 of file jdcoefct.c.

References jpeg_component_info::component_index, compptr, for(), JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, MAX_COMPS_IN_SCAN, jpeg_component_info::MCU_height, jpeg_component_info::MCU_width, METHODDEF(), start_iMCU_row(), TRUE, and jpeg_component_info::v_samp_factor.

Referenced by jinit_d_coef_controller().

decompress_data()

decompress_data	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

Definition at line 315 of file jdcoefct.c.

References jpeg_component_info::component_needed, compptr, jpeg_component_info::DCT_scaled_size, FALSE, jpeg_component_info::height_in_blocks, int, JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, output_col, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

Referenced by jinit_d_coef_controller(), and start_output_pass().

decompress_onepass()

decompress_onepass	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

Definition at line 147 of file jdcoefct.c.

References jpeg_component_info::component_index, jpeg_component_info::component_needed, compptr, jpeg_component_info::DCT_scaled_size, FAR, for(), JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, jzero_far(), jpeg_component_info::last_col_width, jpeg_component_info::MCU_blocks, jpeg_component_info::MCU_height, jpeg_component_info::MCU_sample_width, jpeg_component_info::MCU_width, METHODDEF(), output_col, SIZEOF, and start_iMCU_row().

Referenced by jinit_d_coef_controller().

decompress_smooth_data()

decompress_smooth_data	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

Definition at line 461 of file jdcoefct.c.

References jpeg_component_info::component_needed, compptr, jpeg_component_info::DCT_scaled_size, FALSE, GLOBAL, jpeg_component_info::height_in_blocks, int, jcopy_block_row(), JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, output_col, Q01_POS, Q02_POS, Q10_POS, Q11_POS, Q20_POS, jpeg_component_info::quant_table, JQUANT_TBL::quantval, SAVED_COEFS, TRUE, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

Referenced by start_output_pass().

dummy_consume_data()

dummy_consume_data

(

j_decompress_ptr

cinfo

)

Definition at line 228 of file jdcoefct.c.

References JPEG_SUSPENDED, and METHODDEF().

Referenced by jinit_d_coef_controller().

jinit_d_coef_controller()

jinit_d_coef_controller	(	j_decompress_ptr	cinfo,
		boolean	need_full_buffer
	)

Definition at line 676 of file jdcoefct.c.

References compptr, consume_data(), D_MAX_BLOCKS_IN_MCU, decompress_data(), decompress_onepass(), dummy_consume_data(), ERREXIT, jpeg_component_info::h_samp_factor, jpeg_component_info::height_in_blocks, i, JPOOL_IMAGE, jround_up(), long(), need_full_buffer, NULL, SIZEOF, start_input_pass(), start_output_pass(), TRUE, jpeg_component_info::v_samp_factor, and jpeg_component_info::width_in_blocks.

Referenced by master_selection(), and transdecode_master_selection().

METHODDEF()

METHODDEF

(

int

)

Definition at line 65 of file jdcoefct.c.

Referenced by consume_data(), decompress_onepass(), dummy_consume_data(), smoothing_ok(), start_input_pass(), and start_output_pass().

smoothing_ok()

smoothing_ok

(

j_decompress_ptr

cinfo

)

Definition at line 405 of file jdcoefct.c.

References compptr, FALSE, if(), JPOOL_IMAGE, METHODDEF(), NULL, Q01_POS, Q02_POS, Q10_POS, Q11_POS, Q20_POS, jpeg_component_info::quant_table, SAVED_COEFS, SIZEOF, and TRUE.

Referenced by start_output_pass().

start_input_pass()

start_input_pass

(

j_decompress_ptr

cinfo

)

Definition at line 107 of file jdcoefct.c.

References METHODDEF(), and start_iMCU_row().

Referenced by jinit_d_coef_controller().

start_output_pass()

start_output_pass

(

j_decompress_ptr

cinfo

)

Definition at line 119 of file jdcoefct.c.

References decompress_data(), decompress_smooth_data(), if(), METHODDEF(), NULL, and smoothing_ok().

Referenced by jinit_d_coef_controller().