533 lines
15 KiB
C
533 lines
15 KiB
C
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/*
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* (c) 2001 Fabrice Bellard
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* 2007 Marc Hoffman <marc.hoffman@analog.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* DCT test (c) 2001 Fabrice Bellard
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* Started from sample code by Juan J. Sierralta P.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <math.h>
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#include "libavutil/cpu.h"
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#include "libavutil/common.h"
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#include "libavutil/internal.h"
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#include "libavutil/lfg.h"
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#include "libavutil/time.h"
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#include "libavcodec/dct.h"
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#include "libavcodec/idctdsp.h"
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#include "libavcodec/simple_idct.h"
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#include "libavcodec/xvididct.h"
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#include "libavcodec/aandcttab.h"
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#include "libavcodec/faandct.h"
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#include "libavcodec/faanidct.h"
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#include "libavcodec/dctref.h"
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struct algo {
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const char *name;
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void (*func)(int16_t *block);
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enum idct_permutation_type perm_type;
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int cpu_flag;
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int nonspec;
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};
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static const struct algo fdct_tab[] = {
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{ "REF-DBL", ff_ref_fdct, FF_IDCT_PERM_NONE },
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{ "IJG-AAN-INT", ff_fdct_ifast, FF_IDCT_PERM_NONE },
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{ "IJG-LLM-INT", ff_jpeg_fdct_islow_8, FF_IDCT_PERM_NONE },
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#if CONFIG_FAANDCT
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{ "FAAN", ff_faandct, FF_IDCT_PERM_NONE },
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#endif /* CONFIG_FAANDCT */
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};
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static void ff_prores_idct_wrap(int16_t *dst){
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LOCAL_ALIGNED(16, int16_t, qmat, [64]);
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int i;
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for(i=0; i<64; i++){
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qmat[i]=4;
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}
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ff_prores_idct_10(dst, qmat);
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for(i=0; i<64; i++) {
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dst[i] -= 512;
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}
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}
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static const struct algo idct_tab[] = {
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{ "REF-DBL", ff_ref_idct, FF_IDCT_PERM_NONE },
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{ "INT", ff_j_rev_dct, FF_IDCT_PERM_LIBMPEG2 },
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{ "SIMPLE-C", ff_simple_idct_int16_8bit, FF_IDCT_PERM_NONE },
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{ "SIMPLE-C10", ff_simple_idct_int16_10bit, FF_IDCT_PERM_NONE },
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{ "SIMPLE-C12", ff_simple_idct_int16_12bit, FF_IDCT_PERM_NONE, 0, 1 },
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{ "PR-C", ff_prores_idct_wrap, FF_IDCT_PERM_NONE, 0, 1 },
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#if CONFIG_FAANIDCT
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{ "FAANI", ff_faanidct, FF_IDCT_PERM_NONE },
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#endif /* CONFIG_FAANIDCT */
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#if CONFIG_MPEG4_DECODER
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{ "XVID", ff_xvid_idct, FF_IDCT_PERM_NONE, 0, 1 },
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#endif /* CONFIG_MPEG4_DECODER */
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};
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#if ARCH_AARCH64
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#include "aarch64/dct.c"
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#elif ARCH_ARM
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#include "arm/dct.c"
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#elif ARCH_PPC
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#include "ppc/dct.c"
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#elif ARCH_X86
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#include "x86/dct.c"
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#else
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static const struct algo fdct_tab_arch[] = { { 0 } };
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static const struct algo idct_tab_arch[] = { { 0 } };
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#endif
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#define AANSCALE_BITS 12
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#define NB_ITS 20000
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#define NB_ITS_SPEED 50000
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DECLARE_ALIGNED(16, static int16_t, block)[64];
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DECLARE_ALIGNED(8, static int16_t, block1)[64];
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static void init_block(int16_t block[64], int test, int is_idct, AVLFG *prng, int vals)
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{
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int i, j;
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memset(block, 0, 64 * sizeof(*block));
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switch (test) {
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case 0:
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for (i = 0; i < 64; i++)
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block[i] = (av_lfg_get(prng) % (2*vals)) -vals;
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if (is_idct) {
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ff_ref_fdct(block);
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for (i = 0; i < 64; i++)
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block[i] >>= 3;
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}
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break;
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case 1:
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j = av_lfg_get(prng) % 10 + 1;
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for (i = 0; i < j; i++) {
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int idx = av_lfg_get(prng) % 64;
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block[idx] = av_lfg_get(prng) % (2*vals) -vals;
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}
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break;
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case 2:
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block[ 0] = av_lfg_get(prng) % (16*vals) - (8*vals);
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block[63] = (block[0] & 1) ^ 1;
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break;
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}
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}
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static void permute(int16_t dst[64], const int16_t src[64],
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enum idct_permutation_type perm_type)
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{
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int i;
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#if ARCH_X86
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if (permute_x86(dst, src, perm_type))
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return;
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#endif
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switch (perm_type) {
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case FF_IDCT_PERM_LIBMPEG2:
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for (i = 0; i < 64; i++)
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dst[(i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2)] = src[i];
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break;
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case FF_IDCT_PERM_PARTTRANS:
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for (i = 0; i < 64; i++)
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dst[(i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3)] = src[i];
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break;
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case FF_IDCT_PERM_TRANSPOSE:
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for (i = 0; i < 64; i++)
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dst[(i>>3) | ((i<<3)&0x38)] = src[i];
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break;
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default:
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for (i = 0; i < 64; i++)
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dst[i] = src[i];
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break;
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}
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}
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static int dct_error(const struct algo *dct, int test, int is_idct, int speed, const int bits)
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{
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void (*ref)(int16_t *block) = is_idct ? ff_ref_idct : ff_ref_fdct;
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int it, i, scale;
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int err_inf, v;
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int64_t err2, ti, ti1, it1, err_sum = 0;
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int64_t sysErr[64], sysErrMax = 0;
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int64_t err2_matrix[64], err2_max = 0;
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int maxout = 0;
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int blockSumErrMax = 0, blockSumErr;
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AVLFG prng;
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const int vals=1<<bits;
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double omse, ome;
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int spec_err;
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av_lfg_init(&prng, 1);
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err_inf = 0;
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err2 = 0;
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for (i = 0; i < 64; i++)
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err2_matrix[i] = sysErr[i] = 0;
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for (it = 0; it < NB_ITS; it++) {
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init_block(block1, test, is_idct, &prng, vals);
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permute(block, block1, dct->perm_type);
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dct->func(block);
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emms_c();
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if (!strcmp(dct->name, "IJG-AAN-INT")) {
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for (i = 0; i < 64; i++) {
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scale = 8 * (1 << (AANSCALE_BITS + 11)) / ff_aanscales[i];
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block[i] = (block[i] * scale) >> AANSCALE_BITS;
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}
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}
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ref(block1);
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if (!strcmp(dct->name, "PR-SSE2"))
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for (i = 0; i < 64; i++)
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block1[i] = av_clip(block1[i], 4-512, 1019-512);
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blockSumErr = 0;
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for (i = 0; i < 64; i++) {
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int err = block[i] - block1[i];
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err_sum += err;
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v = abs(err);
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if (v > err_inf)
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err_inf = v;
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err2_matrix[i] += v * v;
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err2 += v * v;
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sysErr[i] += block[i] - block1[i];
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blockSumErr += v;
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if (abs(block[i]) > maxout)
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maxout = abs(block[i]);
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}
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if (blockSumErrMax < blockSumErr)
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blockSumErrMax = blockSumErr;
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}
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for (i = 0; i < 64; i++) {
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sysErrMax = FFMAX(sysErrMax, FFABS(sysErr[i]));
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err2_max = FFMAX(err2_max , FFABS(err2_matrix[i]));
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}
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for (i = 0; i < 64; i++) {
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if (i % 8 == 0)
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printf("\n");
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printf("%7d ", (int) sysErr[i]);
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}
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printf("\n");
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omse = (double) err2 / NB_ITS / 64;
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ome = (double) err_sum / NB_ITS / 64;
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spec_err = is_idct && (err_inf > 1 || omse > 0.02 || fabs(ome) > 0.0015);
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if (test < 2)
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spec_err = is_idct && ((double) err2_max / NB_ITS > 0.06 || (double) sysErrMax / NB_ITS > 0.015);
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printf("%s %s: max_err=%d omse=%0.8f ome=%0.8f syserr=%0.8f maxout=%d blockSumErr=%d\n",
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is_idct ? "IDCT" : "DCT", dct->name, err_inf,
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omse, ome, (double) sysErrMax / NB_ITS,
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maxout, blockSumErrMax);
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if (spec_err && !dct->nonspec) {
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printf("Failed!\n");
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return 1;
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}
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if (!speed)
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return 0;
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/* speed test */
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init_block(block, test, is_idct, &prng, vals);
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permute(block1, block, dct->perm_type);
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ti = av_gettime_relative();
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it1 = 0;
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do {
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for (it = 0; it < NB_ITS_SPEED; it++) {
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memcpy(block, block1, sizeof(block));
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dct->func(block);
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}
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emms_c();
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it1 += NB_ITS_SPEED;
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ti1 = av_gettime_relative() - ti;
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} while (ti1 < 1000000);
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printf("%s %s: %0.1f kdct/s\n", is_idct ? "IDCT" : "DCT", dct->name,
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(double) it1 * 1000.0 / (double) ti1);
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return 0;
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}
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DECLARE_ALIGNED(8, static uint8_t, img_dest)[64];
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DECLARE_ALIGNED(8, static uint8_t, img_dest1)[64];
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static void idct248_ref(uint8_t *dest, ptrdiff_t linesize, int16_t *block)
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{
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static int init;
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static double c8[8][8];
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static double c4[4][4];
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double block1[64], block2[64], block3[64];
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double s, sum, v;
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int i, j, k;
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if (!init) {
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init = 1;
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for (i = 0; i < 8; i++) {
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sum = 0;
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for (j = 0; j < 8; j++) {
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s = (i == 0) ? sqrt(1.0 / 8.0) : sqrt(1.0 / 4.0);
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c8[i][j] = s * cos(M_PI * i * (j + 0.5) / 8.0);
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sum += c8[i][j] * c8[i][j];
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}
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}
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for (i = 0; i < 4; i++) {
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sum = 0;
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for (j = 0; j < 4; j++) {
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s = (i == 0) ? sqrt(1.0 / 4.0) : sqrt(1.0 / 2.0);
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c4[i][j] = s * cos(M_PI * i * (j + 0.5) / 4.0);
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sum += c4[i][j] * c4[i][j];
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}
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}
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}
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/* butterfly */
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s = 0.5 * sqrt(2.0);
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for (i = 0; i < 4; i++) {
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for (j = 0; j < 8; j++) {
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block1[8 * (2 * i) + j] =
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(block[8 * (2 * i) + j] + block[8 * (2 * i + 1) + j]) * s;
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block1[8 * (2 * i + 1) + j] =
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(block[8 * (2 * i) + j] - block[8 * (2 * i + 1) + j]) * s;
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}
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}
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/* idct8 on lines */
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for (i = 0; i < 8; i++) {
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for (j = 0; j < 8; j++) {
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sum = 0;
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for (k = 0; k < 8; k++)
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sum += c8[k][j] * block1[8 * i + k];
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block2[8 * i + j] = sum;
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}
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}
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/* idct4 */
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for (i = 0; i < 8; i++) {
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for (j = 0; j < 4; j++) {
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/* top */
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|
|
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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void idct248_error(const char *name,
|
||
|
|
void (*idct248_put)(uint8_t *dest,
|
||
|
|
ptrdiff_t line_size,
|
||
|
|
int16_t *block),
|
||
|
|
int speed)
|
||
|
|
{
|
||
|
|
int it, i, it1, ti, ti1, err_max, v;
|
||
|
|
AVLFG prng;
|
||
|
|
|
||
|
|
av_lfg_init(&prng, 1);
|
||
|
|
|
||
|
|
/* 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] = av_lfg_get(&prng) % 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);
|
||
|
|
|
||
|
|
if (!speed)
|
||
|
|
return;
|
||
|
|
|
||
|
|
ti = av_gettime_relative();
|
||
|
|
it1 = 0;
|
||
|
|
do {
|
||
|
|
for (it = 0; it < NB_ITS_SPEED; it++) {
|
||
|
|
for (i = 0; i < 64; i++)
|
||
|
|
block[i] = block1[i];
|
||
|
|
idct248_put(img_dest, 8, block);
|
||
|
|
}
|
||
|
|
emms_c();
|
||
|
|
it1 += NB_ITS_SPEED;
|
||
|
|
ti1 = av_gettime_relative() - ti;
|
||
|
|
} while (ti1 < 1000000);
|
||
|
|
|
||
|
|
printf("%s %s: %0.1f kdct/s\n", 1 ? "IDCT248" : "DCT248", name,
|
||
|
|
(double) it1 * 1000.0 / (double) ti1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void help(void)
|
||
|
|
{
|
||
|
|
printf("dct-test [-i] [<test-number>] [<bits>]\n"
|
||
|
|
"test-number 0 -> test with random matrixes\n"
|
||
|
|
" 1 -> test with random sparse matrixes\n"
|
||
|
|
" 2 -> do 3. test from MPEG-4 std\n"
|
||
|
|
"bits Number of time domain bits to use, 8 is default\n"
|
||
|
|
"-i test IDCT implementations\n"
|
||
|
|
"-4 test IDCT248 implementations\n"
|
||
|
|
"-t speed test\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !HAVE_GETOPT
|
||
|
|
#include "compat/getopt.c"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
int test_idct = 0, test_248_dct = 0;
|
||
|
|
int c, i;
|
||
|
|
int test = 1;
|
||
|
|
int speed = 0;
|
||
|
|
int err = 0;
|
||
|
|
int bits=8;
|
||
|
|
|
||
|
|
ff_ref_dct_init();
|
||
|
|
|
||
|
|
for (;;) {
|
||
|
|
c = getopt(argc, argv, "ih4t");
|
||
|
|
if (c == -1)
|
||
|
|
break;
|
||
|
|
switch (c) {
|
||
|
|
case 'i':
|
||
|
|
test_idct = 1;
|
||
|
|
break;
|
||
|
|
case '4':
|
||
|
|
test_248_dct = 1;
|
||
|
|
break;
|
||
|
|
case 't':
|
||
|
|
speed = 1;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
case 'h':
|
||
|
|
help();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (optind < argc)
|
||
|
|
test = atoi(argv[optind]);
|
||
|
|
if(optind+1 < argc) bits= atoi(argv[optind+1]);
|
||
|
|
|
||
|
|
printf("ffmpeg DCT/IDCT test\n");
|
||
|
|
|
||
|
|
if (test_248_dct) {
|
||
|
|
idct248_error("SIMPLE-C", ff_simple_idct248_put, speed);
|
||
|
|
} else {
|
||
|
|
const int cpu_flags = av_get_cpu_flags();
|
||
|
|
if (test_idct) {
|
||
|
|
for (i = 0; i < FF_ARRAY_ELEMS(idct_tab); i++)
|
||
|
|
err |= dct_error(&idct_tab[i], test, test_idct, speed, bits);
|
||
|
|
|
||
|
|
for (i = 0; idct_tab_arch[i].name; i++)
|
||
|
|
if (!(~cpu_flags & idct_tab_arch[i].cpu_flag))
|
||
|
|
err |= dct_error(&idct_tab_arch[i], test, test_idct, speed, bits);
|
||
|
|
}
|
||
|
|
#if CONFIG_FDCTDSP
|
||
|
|
else {
|
||
|
|
for (i = 0; i < FF_ARRAY_ELEMS(fdct_tab); i++)
|
||
|
|
err |= dct_error(&fdct_tab[i], test, test_idct, speed, bits);
|
||
|
|
|
||
|
|
for (i = 0; fdct_tab_arch[i].name; i++)
|
||
|
|
if (!(~cpu_flags & fdct_tab_arch[i].cpu_flag))
|
||
|
|
err |= dct_error(&fdct_tab_arch[i], test, test_idct, speed, bits);
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_FDCTDSP */
|
||
|
|
}
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
printf("Error: %d.\n", err);
|
||
|
|
|
||
|
|
return !!err;
|
||
|
|
}
|