Referencia del Archivo src/qt/src/3rdparty/libjpeg/jutils.c

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

'defines'
#define	JPEG_INTERNALS
#define	FMEMCOPY(dest, src, size)   MEMCOPY(dest,src,size)
#define	FMEMZERO(target, size)   MEMZERO(target,size)
Funciones
	jdiv_round_up (long a, long b)
	jround_up (long a, long b)
	jcopy_sample_rows (JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols)
	jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row, JDIMENSION num_blocks)
	jzero_far (void FAR *target, size_t bytestozero)
Variables
const int	jpeg_natural_order [DCTSIZE2+16]

---

Documentación de los 'defines'

#define FMEMCOPY	(		dest,
			src,
			size
	)		MEMCOPY(dest,src,size)

#define FMEMZERO	(		target,
			size
	)		MEMZERO(target,size)

#define JPEG_INTERNALS

---

Documentación de las funciones

jcopy_block_row	(	JBLOCKROW	input_row,
		JBLOCKROW	output_row,
		JDIMENSION	num_blocks
	)

jcopy_sample_rows	(	JSAMPARRAY	input_array,
		int	source_row,
		JSAMPARRAY	output_array,
		int	dest_row,
		int	num_rows,
		JDIMENSION	num_cols
	)

jdiv_round_up	(	long	a,
		long	b
	)

jround_up	(	long	a,
		long	b
	)

jzero_far	(	void FAR *	target,
		size_t	bytestozero
	)

---

Documentación de las variables

const int jpeg_natural_order[DCTSIZE2+16]

Valor inicial:

 {
  0,  1,  8, 16,  9,  2,  3, 10,
 17, 24, 32, 25, 18, 11,  4,  5,
 12, 19, 26, 33, 40, 48, 41, 34,
 27, 20, 13,  6,  7, 14, 21, 28,
 35, 42, 49, 56, 57, 50, 43, 36,
 29, 22, 15, 23, 30, 37, 44, 51,
 58, 59, 52, 45, 38, 31, 39, 46,
 53, 60, 61, 54, 47, 55, 62, 63,
 63, 63, 63, 63, 63, 63, 63, 63, 
 63, 63, 63, 63, 63, 63, 63, 63
}