+++ /dev/null
-/**
- * @file dct-test.c
- * DCT test. (c) 2001 Fabrice Bellard.
- * Started from sample code by Juan J. Sierralta P.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-#include "dsputil.h"
-
-#include "i386/mmx.h"
-#include "simple_idct.h"
-
-#ifndef MAX
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
-
-/* reference fdct/idct */
-extern void fdct(DCTELEM *block);
-extern void idct(DCTELEM *block);
-extern void init_fdct();
-
-extern void j_rev_dct(DCTELEM *data);
-extern void ff_mmx_idct(DCTELEM *data);
-extern void ff_mmxext_idct(DCTELEM *data);
-
-extern void odivx_idct_c (short *block);
-
-#define AANSCALE_BITS 12
-static const unsigned short aanscales[64] = {
- /* precomputed values scaled up by 14 bits */
- 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
- 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
- 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
- 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
- 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
- 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
- 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
- 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
-};
-
-uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
-
-int64_t gettime(void)
-{
- struct timeval tv;
- gettimeofday(&tv,NULL);
- return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
-#define NB_ITS 20000
-#define NB_ITS_SPEED 50000
-
-static short idct_mmx_perm[64];
-
-static short idct_simple_mmx_perm[64]={
- 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
- 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
- 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
- 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
- 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
- 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
- 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
- 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
-};
-
-void idct_mmx_init(void)
-{
- int i;
-
- /* the mmx/mmxext idct uses a reordered input, so we patch scan tables */
- for (i = 0; i < 64; i++) {
- idct_mmx_perm[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
-// idct_simple_mmx_perm[i] = simple_block_permute_op(i);
- }
-}
-
-static DCTELEM block[64] __attribute__ ((aligned (8)));
-static DCTELEM block1[64] __attribute__ ((aligned (8)));
-static DCTELEM block_org[64] __attribute__ ((aligned (8)));
-
-void dct_error(const char *name, int is_idct,
- void (*fdct_func)(DCTELEM *block),
- void (*fdct_ref)(DCTELEM *block), int test)
-{
- int it, i, scale;
- int err_inf, v;
- int64_t err2, ti, ti1, it1;
- int64_t sysErr[64], sysErrMax=0;
- int maxout=0;
- int blockSumErrMax=0, blockSumErr;
-
- srandom(0);
-
- err_inf = 0;
- err2 = 0;
- for(i=0; i<64; i++) sysErr[i]=0;
- for(it=0;it<NB_ITS;it++) {
- for(i=0;i<64;i++)
- block1[i] = 0;
- switch(test){
- case 0:
- for(i=0;i<64;i++)
- block1[i] = (random() % 512) -256;
- if (is_idct){
- fdct(block1);
-
- for(i=0;i<64;i++)
- block1[i]>>=3;
- }
- break;
- case 1:{
- int num= (random()%10)+1;
- for(i=0;i<num;i++)
- block1[random()%64] = (random() % 512) -256;
- }break;
- case 2:
- block1[0]= (random()%4096)-2048;
- block1[63]= (block1[0]&1)^1;
- break;
- }
-
-#if 0 // simulate mismatch control
-{ int sum=0;
- for(i=0;i<64;i++)
- sum+=block1[i];
-
- if((sum&1)==0) block1[63]^=1;
-}
-#endif
-
- for(i=0; i<64; i++)
- block_org[i]= block1[i];
-
- if (fdct_func == ff_mmx_idct ||
- fdct_func == j_rev_dct || fdct_func == ff_mmxext_idct) {
- for(i=0;i<64;i++)
- block[idct_mmx_perm[i]] = block1[i];
- } else if(fdct_func == ff_simple_idct_mmx ) {
- for(i=0;i<64;i++)
- block[idct_simple_mmx_perm[i]] = block1[i];
-
- } else {
- for(i=0; i<64; i++)
- block[i]= block1[i];
- }
-#if 0 // simulate mismatch control for tested IDCT but not the ref
-{ int sum=0;
- for(i=0;i<64;i++)
- sum+=block[i];
-
- if((sum&1)==0) block[63]^=1;
-}
-#endif
-
- fdct_func(block);
- emms(); /* for ff_mmx_idct */
-
- if (fdct_func == fdct_ifast) {
- for(i=0; i<64; i++) {
- scale = 8*(1 << (AANSCALE_BITS + 11)) / aanscales[i];
- block[i] = (block[i] * scale /*+ (1<<(AANSCALE_BITS-1))*/) >> AANSCALE_BITS;
- }
- }
-
- fdct_ref(block1);
-
- blockSumErr=0;
- for(i=0;i<64;i++) {
- v = abs(block[i] - block1[i]);
- if (v > err_inf)
- err_inf = v;
- err2 += v * v;
- sysErr[i] += block[i] - block1[i];
- blockSumErr += v;
- if( abs(block[i])>maxout) maxout=abs(block[i]);
- }
- if(blockSumErrMax < blockSumErr) blockSumErrMax= blockSumErr;
-#if 0 // print different matrix pairs
- if(blockSumErr){
- printf("\n");
- for(i=0; i<64; i++){
- if((i&7)==0) printf("\n");
- printf("%4d ", block_org[i]);
- }
- for(i=0; i<64; i++){
- if((i&7)==0) printf("\n");
- printf("%4d ", block[i] - block1[i]);
- }
- }
-#endif
- }
- for(i=0; i<64; i++) sysErrMax= MAX(sysErrMax, ABS(sysErr[i]));
-
-#if 1 // dump systematic errors
- for(i=0; i<64; i++){
- if(i%8==0) printf("\n");
- printf("%5d ", (int)sysErr[i]);
- }
- printf("\n");
-#endif
-
- printf("%s %s: err_inf=%d err2=%0.8f syserr=%0.8f maxout=%d blockSumErr=%d\n",
- is_idct ? "IDCT" : "DCT",
- name, err_inf, (double)err2 / NB_ITS / 64.0, (double)sysErrMax / NB_ITS, maxout, blockSumErrMax);
-#if 1 //Speed test
- /* speed test */
- for(i=0;i<64;i++)
- block1[i] = 0;
- switch(test){
- case 0:
- for(i=0;i<64;i++)
- block1[i] = (random() % 512) -256;
- if (is_idct){
- fdct(block1);
-
- for(i=0;i<64;i++)
- block1[i]>>=3;
- }
- break;
- case 1:{
- case 2:
- block1[0] = (random() % 512) -256;
- block1[1] = (random() % 512) -256;
- block1[2] = (random() % 512) -256;
- block1[3] = (random() % 512) -256;
- }break;
- }
-
- if (fdct_func == ff_mmx_idct ||
- fdct_func == j_rev_dct || fdct_func == ff_mmxext_idct) {
- for(i=0;i<64;i++)
- block[idct_mmx_perm[i]] = block1[i];
- } else if(fdct_func == ff_simple_idct_mmx ) {
- for(i=0;i<64;i++)
- block[idct_simple_mmx_perm[i]] = block1[i];
- } else {
- for(i=0; i<64; i++)
- block[i]= block1[i];
- }
-
- ti = gettime();
- it1 = 0;
- do {
- for(it=0;it<NB_ITS_SPEED;it++) {
- for(i=0; i<64; i++)
- block[i]= block1[i];
-// memcpy(block, block1, sizeof(DCTELEM) * 64);
-// dont memcpy especially not fastmemcpy because it does movntq !!!
- fdct_func(block);
- }
- it1 += NB_ITS_SPEED;
- ti1 = gettime() - ti;
- } while (ti1 < 1000000);
- emms();
-
- printf("%s %s: %0.1f kdct/s\n",
- is_idct ? "IDCT" : "DCT",
- name, (double)it1 * 1000.0 / (double)ti1);
-#endif
-}
-
-static uint8_t img_dest[64] __attribute__ ((aligned (8)));
-static uint8_t img_dest1[64] __attribute__ ((aligned (8)));
-
-void idct248_ref(uint8_t *dest, int linesize, int16_t *block)
-{
- static int init;
- static double c8[8][8];
- static double c4[4][4];
- double block1[64], block2[64], block3[64];
- double s, sum, v;
- int i, j, k;
-
- if (!init) {
- init = 1;
-
- for(i=0;i<8;i++) {
- sum = 0;
- for(j=0;j<8;j++) {
- s = (i==0) ? sqrt(1.0/8.0) : sqrt(1.0/4.0);
- c8[i][j] = s * cos(M_PI * i * (j + 0.5) / 8.0);
- sum += c8[i][j] * c8[i][j];
- }
- }
-
- for(i=0;i<4;i++) {
- sum = 0;
- for(j=0;j<4;j++) {
- s = (i==0) ? sqrt(1.0/4.0) : sqrt(1.0/2.0);
- c4[i][j] = s * cos(M_PI * i * (j + 0.5) / 4.0);
- sum += c4[i][j] * c4[i][j];
- }
- }
- }
-
- /* butterfly */
- s = 0.5 * sqrt(2.0);
- for(i=0;i<4;i++) {
- for(j=0;j<8;j++) {
- block1[8*(2*i)+j] = (block[8*(2*i)+j] + block[8*(2*i+1)+j]) * s;
- block1[8*(2*i+1)+j] = (block[8*(2*i)+j] - block[8*(2*i+1)+j]) * s;
- }
- }
-
- /* idct8 on lines */
- for(i=0;i<8;i++) {
- for(j=0;j<8;j++) {
- sum = 0;
- for(k=0;k<8;k++)
- sum += c8[k][j] * block1[8*i+k];
- block2[8*i+j] = sum;
- }
- }
-
- /* idct4 */
- for(i=0;i<8;i++) {
- for(j=0;j<4;j++) {
- /* top */
- sum = 0;
- for(k=0;k<4;k++)
- sum += c4[k][j] * block2[8*(2*k)+i];
- block3[8*(2*j)+i] = sum;
-
- /* bottom */
- sum = 0;
- for(k=0;k<4;k++)
- sum += c4[k][j] * block2[8*(2*k+1)+i];
- block3[8*(2*j+1)+i] = sum;
- }
- }
-
- /* clamp and store the result */
- for(i=0;i<8;i++) {
- for(j=0;j<8;j++) {
- v = block3[8*i+j];
- if (v < 0)
- v = 0;
- else if (v > 255)
- v = 255;
- dest[i * linesize + j] = (int)rint(v);
- }
- }
-}
-
-void idct248_error(const char *name,
- void (*idct248_put)(uint8_t *dest, int line_size, int16_t *block))
-{
- int it, i, it1, ti, ti1, err_max, v;
-
- srandom(0);
-
- /* just one test to see if code is correct (precision is less
- important here) */
- err_max = 0;
- for(it=0;it<NB_ITS;it++) {
-
- /* XXX: use forward transform to generate values */
- for(i=0;i<64;i++)
- block1[i] = (random() % 256) - 128;
- block1[0] += 1024;
-
- for(i=0; i<64; i++)
- block[i]= block1[i];
- idct248_ref(img_dest1, 8, block);
-
- for(i=0; i<64; i++)
- block[i]= block1[i];
- idct248_put(img_dest, 8, block);
-
- for(i=0;i<64;i++) {
- v = abs((int)img_dest[i] - (int)img_dest1[i]);
- if (v == 255)
- printf("%d %d\n", img_dest[i], img_dest1[i]);
- if (v > err_max)
- err_max = v;
- }
-#if 0
- printf("ref=\n");
- for(i=0;i<8;i++) {
- int j;
- for(j=0;j<8;j++) {
- printf(" %3d", img_dest1[i*8+j]);
- }
- printf("\n");
- }
-
- printf("out=\n");
- for(i=0;i<8;i++) {
- int j;
- for(j=0;j<8;j++) {
- printf(" %3d", img_dest[i*8+j]);
- }
- printf("\n");
- }
-#endif
- }
- printf("%s %s: err_inf=%d\n",
- 1 ? "IDCT248" : "DCT248",
- name, err_max);
-
- ti = gettime();
- it1 = 0;
- do {
- for(it=0;it<NB_ITS_SPEED;it++) {
- for(i=0; i<64; i++)
- block[i]= block1[i];
-// memcpy(block, block1, sizeof(DCTELEM) * 64);
-// dont memcpy especially not fastmemcpy because it does movntq !!!
- idct248_put(img_dest, 8, block);
- }
- it1 += NB_ITS_SPEED;
- ti1 = gettime() - ti;
- } while (ti1 < 1000000);
- emms();
-
- printf("%s %s: %0.1f kdct/s\n",
- 1 ? "IDCT248" : "DCT248",
- name, (double)it1 * 1000.0 / (double)ti1);
-}
-
-void help(void)
-{
- printf("dct-test [-i] [<test-number>]\n"
- "test-number 0 -> test with random matrixes\n"
- " 1 -> test with random sparse matrixes\n"
- " 2 -> do 3. test from mpeg4 std\n"
- "-i test IDCT implementations\n"
- "-4 test IDCT248 implementations\n");
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- int test_idct = 0, test_248_dct = 0;
- int c,i;
- int test=1;
-
- init_fdct();
- idct_mmx_init();
-
- for(i=0;i<256;i++) cropTbl[i + MAX_NEG_CROP] = i;
- for(i=0;i<MAX_NEG_CROP;i++) {
- cropTbl[i] = 0;
- cropTbl[i + MAX_NEG_CROP + 256] = 255;
- }
-
- for(;;) {
- c = getopt(argc, argv, "ih4");
- if (c == -1)
- break;
- switch(c) {
- case 'i':
- test_idct = 1;
- break;
- case '4':
- test_248_dct = 1;
- break;
- default :
- case 'h':
- help();
- break;
- }
- }
-
- if(optind <argc) test= atoi(argv[optind]);
-
- printf("ffmpeg DCT/IDCT test\n");
-
- if (test_248_dct) {
- idct248_error("SIMPLE-C", simple_idct248_put);
- } else {
- if (!test_idct) {
- dct_error("REF-DBL", 0, fdct, fdct, test); /* only to verify code ! */
- dct_error("IJG-AAN-INT", 0, fdct_ifast, fdct, test);
- dct_error("IJG-LLM-INT", 0, ff_jpeg_fdct_islow, fdct, test);
- dct_error("MMX", 0, ff_fdct_mmx, fdct, test);
- } else {
- dct_error("REF-DBL", 1, idct, idct, test);
- dct_error("INT", 1, j_rev_dct, idct, test);
- dct_error("LIBMPEG2-MMX", 1, ff_mmx_idct, idct, test);
- dct_error("LIBMPEG2-MMXEXT", 1, ff_mmxext_idct, idct, test);
- dct_error("SIMPLE-C", 1, simple_idct, idct, test);
- dct_error("SIMPLE-MMX", 1, ff_simple_idct_mmx, idct, test);
- // dct_error("ODIVX-C", 1, odivx_idct_c, idct);
- //printf(" test against odivx idct\n");
- // dct_error("REF", 1, idct, odivx_idct_c);
- // dct_error("INT", 1, j_rev_dct, odivx_idct_c);
- // dct_error("MMX", 1, ff_mmx_idct, odivx_idct_c);
- // dct_error("MMXEXT", 1, ff_mmxext_idct, odivx_idct_c);
- // dct_error("SIMPLE-C", 1, simple_idct, odivx_idct_c);
- // dct_error("SIMPLE-MMX", 1, ff_simple_idct_mmx, odivx_idct_c);
- // dct_error("ODIVX-C", 1, odivx_idct_c, odivx_idct_c);
- }
- }
- return 0;
-}
projects / synfig.git / blobdiff