-/* DCT test. (c) 2001 Gerard Lantau.
- Started from sample code by Juan J. Sierralta P.
-*/
+/*
+ * (c) 2001 Fabrice Bellard
+ * 2007 Marc Hoffman <marc.hoffman@analog.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @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 <getopt.h>
+#include <math.h>
+#include "libavutil/common.h"
#include "dsputil.h"
-#include "i386/mmx.h"
+#include "simple_idct.h"
+#include "faandct.h"
+#include "faanidct.h"
+#include "i386/idct_xvid.h"
+
+#undef printf
+#undef random
+
+void *fast_memcpy(void *a, const void *b, size_t c){return memcpy(a,b,c);};
/* 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);
+
+// BFIN
+extern void ff_bfin_idct (DCTELEM *block) ;
+extern void ff_bfin_fdct (DCTELEM *block) ;
+
+// ALTIVEC
+extern void fdct_altivec (DCTELEM *block);
+//extern void idct_altivec (DCTELEM *block);?? no routine
+
+
+struct algo {
+ const char *name;
+ enum { FDCT, IDCT } is_idct;
+ void (* func) (DCTELEM *block);
+ void (* ref) (DCTELEM *block);
+ enum formattag { NO_PERM,MMX_PERM, MMX_SIMPLE_PERM, SCALE_PERM, SSE2_PERM } format;
+ int mm_support;
+};
+
+#ifndef FAAN_POSTSCALE
+#define FAAN_SCALE SCALE_PERM
+#else
+#define FAAN_SCALE NO_PERM
+#endif
+
+struct algo algos[] = {
+ {"REF-DBL", 0, fdct, fdct, NO_PERM},
+ {"FAAN", 0, ff_faandct, fdct, FAAN_SCALE},
+ {"FAANI", 1, ff_faanidct, idct, NO_PERM},
+ {"IJG-AAN-INT", 0, fdct_ifast, fdct, SCALE_PERM},
+ {"IJG-LLM-INT", 0, ff_jpeg_fdct_islow, fdct, NO_PERM},
+ {"REF-DBL", 1, idct, idct, NO_PERM},
+ {"INT", 1, j_rev_dct, idct, MMX_PERM},
+ {"SIMPLE-C", 1, ff_simple_idct, idct, NO_PERM},
+
+#ifdef HAVE_MMX
+ {"MMX", 0, ff_fdct_mmx, fdct, NO_PERM, MM_MMX},
+#ifdef HAVE_MMX2
+ {"MMX2", 0, ff_fdct_mmx2, fdct, NO_PERM, MM_MMXEXT},
+#endif
+
+#ifdef CONFIG_GPL
+ {"LIBMPEG2-MMX", 1, ff_mmx_idct, idct, MMX_PERM, MM_MMX},
+ {"LIBMPEG2-MMXEXT", 1, ff_mmxext_idct, idct, MMX_PERM, MM_MMXEXT},
+#endif
+ {"SIMPLE-MMX", 1, ff_simple_idct_mmx, idct, MMX_SIMPLE_PERM, MM_MMX},
+ {"XVID-MMX", 1, ff_idct_xvid_mmx, idct, NO_PERM, MM_MMX},
+ {"XVID-MMX2", 1, ff_idct_xvid_mmx2, idct, NO_PERM, MM_MMXEXT},
+ {"XVID-SSE2", 1, ff_idct_xvid_sse2, idct, SSE2_PERM, MM_SSE2},
+#endif
+
+#ifdef HAVE_ALTIVEC
+ {"altivecfdct", 0, fdct_altivec, fdct, NO_PERM, MM_ALTIVEC},
+#endif
+
+#ifdef ARCH_BFIN
+ {"BFINfdct", 0, ff_bfin_fdct, fdct, NO_PERM},
+ {"BFINidct", 1, ff_bfin_idct, idct, NO_PERM},
+#endif
+
+ { 0 }
+};
+
#define AANSCALE_BITS 12
static const unsigned short aanscales[64] = {
/* precomputed values scaled up by 14 bits */
4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
};
-INT64 gettime(void)
+uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
+
+int64_t gettime(void)
{
struct timeval tv;
gettimeofday(&tv,NULL);
- return (INT64)tv.tv_sec * 1000000 + tv.tv_usec;
+ return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
}
#define NB_ITS 20000
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,
+};
+
+static const uint8_t idct_sse2_row_perm[8] = {0, 4, 1, 5, 2, 6, 3, 7};
+
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_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 block[64] __attribute__ ((aligned (16)));
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))
+ void (*fdct_ref)(DCTELEM *block), int form, int test)
{
int it, i, scale;
int err_inf, v;
- INT64 err2, ti, ti1, it1;
+ 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] = random() % 256;
+ 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 idct test, generate inverse idct data */
- 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) {
- for(i=0;i<64;i++)
+ if (form == MMX_PERM) {
+ for(i=0;i<64;i++)
block[idct_mmx_perm[i]] = block1[i];
+ } else if (form == MMX_SIMPLE_PERM) {
+ for(i=0;i<64;i++)
+ block[idct_simple_mmx_perm[i]] = block1[i];
+
+ } else if (form == SSE2_PERM) {
+ for(i=0; i<64; i++)
+ block[(i&0x38) | idct_sse2_row_perm[i&7]] = block1[i];
} else {
- memcpy(block, block1, sizeof(DCTELEM) * 64);
+ 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 */
+ emms_c(); /* for ff_mmx_idct */
- if (fdct_func == jpeg_fdct_ifast) {
+ if (form == SCALE_PERM) {
for(i=0; i<64; i++) {
- scale = (1 << (AANSCALE_BITS + 11)) / aanscales[i];
- block[i] = (block[i] * scale) >> AANSCALE_BITS;
+ 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
}
- printf("%s %s: err_inf=%d err2=%0.2f\n",
- is_idct ? "IDCT" : "DCT",
- name, err_inf, (double)err2 / NB_ITS / 64.0);
+ for(i=0; i<64; i++) sysErrMax= FFMAX(sysErrMax, FFABS(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] = 255 - 63 + i;
-
- /* for idct test, generate inverse idct data */
- if (is_idct)
- fdct(block1);
- if (fdct_func == ff_mmx_idct ||
- fdct_func == j_rev_dct) {
- for(i=0;i<64;i++)
+ 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 (form == MMX_PERM) {
+ for(i=0;i<64;i++)
block[idct_mmx_perm[i]] = block1[i];
+ } else if(form == MMX_SIMPLE_PERM) {
+ 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++) {
- memcpy(block, block1, sizeof(DCTELEM) * 64);
+ for(i=0; i<64; i++)
+ block[i]= block1[i];
+// memcpy(block, block1, sizeof(DCTELEM) * 64);
+// do not memcpy especially not fastmemcpy because it does movntq !!!
fdct_func(block);
}
it1 += NB_ITS_SPEED;
ti1 = gettime() - ti;
} while (ti1 < 1000000);
- emms();
+ emms_c();
- printf("%s %s: %0.1f kdct/s\n",
+ 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);
+// do not 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_c();
+
+ 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]\n"
- "test DCT implementations\n");
- exit(1);
+ 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");
}
int main(int argc, char **argv)
{
- int test_idct = 0;
- int c;
+ int test_idct = 0, test_248_dct = 0;
+ int c,i;
+ int test=1;
init_fdct();
idct_mmx_init();
+#ifndef mm_flags
+ mm_flags = mm_support();
+#endif
+
+ 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, "ih");
+ 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;
+ return 0;
}
}
-
+
+ if(optind <argc) test= atoi(argv[optind]);
+
printf("ffmpeg DCT/IDCT test\n");
- if (!test_idct) {
- dct_error("REF", 0, fdct, fdct); /* only to verify code ! */
- dct_error("AAN", 0, jpeg_fdct_ifast, fdct);
- dct_error("MMX", 0, fdct_mmx, fdct);
+ if (test_248_dct) {
+ idct248_error("SIMPLE-C", ff_simple_idct248_put);
} else {
- dct_error("REF", 1, idct, idct);
- dct_error("INT", 1, j_rev_dct, idct);
- dct_error("MMX", 1, ff_mmx_idct, idct);
- // dct_error("MMX", 1, ff_mmxext_idct, idct);
+ for (i=0;algos[i].name;i++)
+ if (algos[i].is_idct == test_idct && !(~mm_flags & algos[i].mm_support)) {
+ dct_error (algos[i].name, algos[i].is_idct, algos[i].func, algos[i].ref, algos[i].format, test);
+ }
}
return 0;
}
projects / ffmpeg / blobdiff