Independent JPEG Group's LLM idct. More...

#include "libavutil/common.h"
#include "dct.h"
#include "idctdsp.h"

Macros
#define	EIGHT_BIT_SAMPLES

#define	DCTSIZE 8

#define	DCTSIZE2 64

#define	GLOBAL

#define	RIGHT_SHIFT(x, n) ((x) >> (n))

#define	CONST_BITS 13

#define	PASS1_BITS 2

#define	ONE ((int32_t) 1)

#define	CONST_SCALE (ONE << CONST_BITS)

#define	FIX(x) ((int32_t) ((x) * CONST_SCALE + 0.5))

#define	DESCALE(x, n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)

#define	MULTIPLY(var, const) ((var) * (const))

#define	FIX_0_211164243 1730

#define	FIX_0_275899380 2260

#define	FIX_0_298631336 2446

#define	FIX_0_390180644 3196

#define	FIX_0_509795579 4176

#define	FIX_0_541196100 4433

#define	FIX_0_601344887 4926

#define	FIX_0_765366865 6270

#define	FIX_0_785694958 6436

#define	FIX_0_899976223 7373

#define	FIX_1_061594337 8697

#define	FIX_1_111140466 9102

#define	FIX_1_175875602 9633

#define	FIX_1_306562965 10703

#define	FIX_1_387039845 11363

#define	FIX_1_451774981 11893

#define	FIX_1_501321110 12299

#define	FIX_1_662939225 13623

#define	FIX_1_847759065 15137

#define	FIX_1_961570560 16069

#define	FIX_2_053119869 16819

#define	FIX_2_172734803 17799

#define	FIX_2_562915447 20995

#define	FIX_3_072711026 25172

#define	DCTSIZE 4

#define	DCTSTRIDE 8

Functions
void	ff_j_rev_dct (DCTBLOCK data)

void	ff_j_rev_dct4 (DCTBLOCK data)

void	ff_j_rev_dct2 (DCTBLOCK data)

void	ff_j_rev_dct1 (DCTBLOCK data)

void	ff_jref_idct_put (uint8_t dest, ptrdiff_t line_size, int16_t block)

void	ff_jref_idct_add (uint8_t dest, ptrdiff_t line_size, int16_t block)

Detailed Description

Independent JPEG Group's LLM idct.

Macros