jdcoefct.c File Reference

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

Data Structures
struct	my_coef_controller

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

Typedefs
typedef my_coef_controller *	my_coef_ptr

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

#define JPEG_INTERNALS

#define Q01_POS   1

Referenced by decompress_smooth_data(), and smoothing_ok().

#define Q02_POS   2

Referenced by decompress_smooth_data(), and smoothing_ok().

#define Q10_POS   8

Referenced by decompress_smooth_data(), and smoothing_ok().

#define Q11_POS   9

Referenced by decompress_smooth_data(), and smoothing_ok().

#define Q20_POS   16

Referenced by decompress_smooth_data(), and smoothing_ok().

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

Referenced by decompress_smooth_data(), and smoothing_ok().

typedef my_coef_controller* my_coef_ptr

consume_data

(

j_decompress_ptr

cinfo

)

References buffer, ci, cinfo, jpeg_component_info::component_index, compptr, for(), JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, MAX_COMPS_IN_SCAN, my_coef_controller::MCU_buffer, my_coef_controller::MCU_ctr, jpeg_component_info::MCU_height, MCU_rows_per_iMCU_row, my_coef_controller::MCU_vert_offset, jpeg_component_info::MCU_width, MCUs_per_row, TRUE, jpeg_component_info::v_samp_factor, and my_coef_controller::whole_image.

Referenced by jinit_d_coef_controller().

decompress_data	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

References buffer, ci, cinfo, jpeg_component_info::component_needed, compptr, jpeg_component_info::DCT_scaled_size, FALSE, jpeg_component_info::height_in_blocks, JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, JPEG_SUSPENDED, output_col, jpeg_component_info::v_samp_factor, while(), my_coef_controller::whole_image, and jpeg_component_info::width_in_blocks.

Referenced by jinit_d_coef_controller(), and start_output_pass().

decompress_onepass	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

References ci, cinfo, 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, jpeg_component_info::last_col_width, jpeg_component_info::MCU_blocks, my_coef_controller::MCU_buffer, my_coef_controller::MCU_ctr, jpeg_component_info::MCU_height, MCU_rows_per_iMCU_row, jpeg_component_info::MCU_sample_width, my_coef_controller::MCU_vert_offset, jpeg_component_info::MCU_width, output_col, and SIZEOF.

Referenced by jinit_d_coef_controller().

decompress_smooth_data	(	j_decompress_ptr	cinfo,
		JSAMPIMAGE	output_buf
	)

References Al, buffer, ci, cinfo, my_coef_controller::coef_bits_latch, jpeg_component_info::component_needed, compptr, jpeg_component_info::DCT_scaled_size, FALSE, jpeg_component_info::height_in_blocks, 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, while(), my_coef_controller::whole_image, and jpeg_component_info::width_in_blocks.

Referenced by start_output_pass().

dummy_consume_data

(

j_decompress_ptr

cinfo

)

References JPEG_SUSPENDED.

Referenced by jinit_d_coef_controller().

jinit_d_coef_controller	(	j_decompress_ptr	cinfo,
		boolean	need_full_buffer
	)

References buffer, ci, cinfo, my_coef_controller::coef_bits_latch, 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, my_coef_controller::MCU_buffer, NULL, my_coef_controller::pub, SIZEOF, start_input_pass(), start_output_pass(), TRUE, jpeg_component_info::v_samp_factor, my_coef_controller::whole_image, and jpeg_component_info::width_in_blocks.

Referenced by master_selection(), and transdecode_master_selection().

METHODDEF

(

int

)

References if(), my_coef_controller::MCU_ctr, my_coef_controller::MCU_rows_per_iMCU_row, and my_coef_controller::MCU_vert_offset.

smoothing_ok

(

j_decompress_ptr

cinfo

)

References ci, my_coef_controller::coef_bits_latch, compptr, FALSE, if(), JPOOL_IMAGE, 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

(

j_decompress_ptr

cinfo

)

Referenced by consume_markers(), jinit_d_coef_controller(), and jinit_input_controller().

start_output_pass

(

j_decompress_ptr

cinfo

)

References decompress_data(), decompress_smooth_data(), if(), NULL, my_coef_controller::pub, and smoothing_ok().

Referenced by jinit_d_coef_controller().