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Data Structures | Macros | Functions | Variables
dct.c File Reference

DCT test (c) 2001 Fabrice Bellard Started from sample code by Juan J. More...

#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "libavutil/cpu.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/lfg.h"
#include "libavutil/time.h"
#include "libavcodec/dct.h"
#include "libavcodec/idctdsp.h"
#include "libavcodec/simple_idct.h"
#include "libavcodec/xvididct.h"
#include "libavcodec/aandcttab.h"
#include "libavcodec/faandct.h"
#include "libavcodec/faanidct.h"
#include "libavcodec/dctref.h"
#include "compat/getopt.c"

Go to the source code of this file.

Data Structures

struct  algo
 

Macros

#define AANSCALE_BITS   12
 
#define NB_ITS   20000
 
#define NB_ITS_SPEED   50000
 

Functions

static void ff_prores_idct_wrap (int16_t *dst)
 
static void init_block (int16_t block[64], int test, int is_idct, AVLFG *prng, int vals)
 
static void permute (int16_t dst[64], const int16_t src[64], enum idct_permutation_type perm_type)
 
static int dct_error (const struct algo *dct, int test, int is_idct, int speed, const int bits)
 
static void idct248_ref (uint8_t *dest, ptrdiff_t linesize, int16_t *block)
 
static void idct248_error (const char *name, void(*idct248_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block), int speed)
 
static void help (void)
 
int main (int argc, char **argv)
 

Variables

static const struct algo fdct_tab []
 
static const struct algo idct_tab []
 
static const struct algo fdct_tab_arch [] = { { 0 } }
 
static const struct algo idct_tab_arch [] = { { 0 } }
 
static int16_t block [64]
 
static int16_t block1 [64]
 
static uint8_t img_dest [64]
 
static uint8_t img_dest1 [64]
 

Detailed Description

DCT test (c) 2001 Fabrice Bellard Started from sample code by Juan J.

Sierralta P.

Definition in file dct.c.

Macro Definition Documentation

#define AANSCALE_BITS   12

Definition at line 110 of file dct.c.

Referenced by dct_error().

#define NB_ITS   20000

Definition at line 112 of file dct.c.

Referenced by dct_error(), and idct248_error().

#define NB_ITS_SPEED   50000

Definition at line 113 of file dct.c.

Referenced by dct_error(), and idct248_error().

Function Documentation

static void ff_prores_idct_wrap ( int16_t *  dst)
static

Definition at line 69 of file dct.c.

static void init_block ( int16_t  block[64],
int  test,
int  is_idct,
AVLFG prng,
int  vals 
)
static

Definition at line 118 of file dct.c.

Referenced by dct_error().

static void permute ( int16_t  dst[64],
const int16_t  src[64],
enum idct_permutation_type  perm_type 
)
static

Definition at line 148 of file dct.c.

Referenced by dct_error().

static int dct_error ( const struct algo dct,
int  test,
int  is_idct,
int  speed,
const int  bits 
)
static

Definition at line 178 of file dct.c.

Referenced by main().

static void idct248_ref ( uint8_t dest,
ptrdiff_t  linesize,
int16_t *  block 
)
static

Definition at line 293 of file dct.c.

Referenced by idct248_error().

static void idct248_error ( const char *  name,
void(*)(uint8_t *dest, ptrdiff_t line_size, int16_t *block idct248_put,
int  speed 
)
static

Definition at line 373 of file dct.c.

Referenced by main().

static void help ( void  )
static

Definition at line 450 of file dct.c.

Referenced by main().

int main ( int  argc,
char **  argv 
)

Definition at line 466 of file dct.c.

Variable Documentation

const struct algo fdct_tab[]
static
Initial value:
= {
{ "REF-DBL", ff_ref_fdct, FF_IDCT_PERM_NONE },
{ "IJG-AAN-INT", ff_fdct_ifast, FF_IDCT_PERM_NONE },
{ "IJG-LLM-INT", ff_jpeg_fdct_islow_8, FF_IDCT_PERM_NONE },
}
void ff_fdct_ifast(int16_t *data)
Definition: jfdctfst.c:208
void ff_jpeg_fdct_islow_8(int16_t *data)
void ff_ref_fdct(short *block)
Transform 8x8 block of data with a double precision forward DCT This is a reference implementation...
Definition: dctref.c:59

Definition at line 60 of file dct.c.

const struct algo idct_tab[]
static
Initial value:
= {
{ "REF-DBL", ff_ref_idct, FF_IDCT_PERM_NONE },
{ "SIMPLE-C", ff_simple_idct_int16_8bit, FF_IDCT_PERM_NONE },
{ "SIMPLE-C10", ff_simple_idct_int16_10bit, FF_IDCT_PERM_NONE },
}
void ff_simple_idct_int16_8bit(int16_t *block)
static void ff_prores_idct_wrap(int16_t *dst)
Definition: dct.c:69
void ff_simple_idct_int16_12bit(int16_t *block)
void ff_j_rev_dct(int16_t *data)
void ff_simple_idct_int16_10bit(int16_t *block)
void ff_ref_idct(short *block)
Transform 8x8 block of data with a double precision inverse DCT This is a reference implementation...
Definition: dctref.c:95

Definition at line 82 of file dct.c.

const struct algo fdct_tab_arch[] = { { 0 } }
static

Definition at line 106 of file dct.c.

const struct algo idct_tab_arch[] = { { 0 } }
static

Definition at line 107 of file dct.c.

int16_t block[64]
static

Definition at line 115 of file dct.c.

Referenced by dct_error().

int16_t block1[64]
static
uint8_t img_dest[64]
static

Definition at line 290 of file dct.c.

Referenced by idct248_error().

uint8_t img_dest1[64]
static

Definition at line 291 of file dct.c.

Referenced by idct248_error().