528 lines
14 KiB
C
528 lines
14 KiB
C
/*
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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/lfg.h"
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#include "libavutil/time.h"
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#include "dct.h"
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#include "simple_idct.h"
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#include "aandcttab.h"
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#include "faandct.h"
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#include "faanidct.h"
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#include "x86/idct_xvid.h"
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#include "dctref.h"
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#undef printf
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// BFIN
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void ff_bfin_idct(int16_t *block);
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void ff_bfin_fdct(int16_t *block);
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// ALTIVEC
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void ff_fdct_altivec(int16_t *block);
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// ARM
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void ff_j_rev_dct_arm(int16_t *data);
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void ff_simple_idct_arm(int16_t *data);
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void ff_simple_idct_armv5te(int16_t *data);
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void ff_simple_idct_armv6(int16_t *data);
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void ff_simple_idct_neon(int16_t *data);
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void ff_simple_idct_axp(int16_t *data);
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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 formattag { NO_PERM, MMX_PERM, MMX_SIMPLE_PERM, SCALE_PERM,
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SSE2_PERM, PARTTRANS_PERM } format;
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int mm_support;
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int nonspec;
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};
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static int cpu_flags;
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static const struct algo fdct_tab[] = {
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{ "REF-DBL", ff_ref_fdct, NO_PERM },
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{ "FAAN", ff_faandct, NO_PERM },
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{ "IJG-AAN-INT", ff_fdct_ifast, SCALE_PERM },
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{ "IJG-LLM-INT", ff_jpeg_fdct_islow_8, NO_PERM },
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#if HAVE_MMX_INLINE
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{ "MMX", ff_fdct_mmx, NO_PERM, AV_CPU_FLAG_MMX },
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{ "MMXEXT", ff_fdct_mmxext, NO_PERM, AV_CPU_FLAG_MMXEXT },
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{ "SSE2", ff_fdct_sse2, NO_PERM, AV_CPU_FLAG_SSE2 },
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#endif
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#if HAVE_ALTIVEC
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{ "altivecfdct", ff_fdct_altivec, NO_PERM, AV_CPU_FLAG_ALTIVEC },
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#endif
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#if ARCH_BFIN
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{ "BFINfdct", ff_bfin_fdct, NO_PERM },
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#endif
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{ 0 }
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};
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static const struct algo idct_tab[] = {
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{ "FAANI", ff_faanidct, NO_PERM },
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{ "REF-DBL", ff_ref_idct, NO_PERM },
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{ "INT", ff_j_rev_dct, MMX_PERM },
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{ "SIMPLE-C", ff_simple_idct_8, NO_PERM },
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#if HAVE_MMX_INLINE
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{ "SIMPLE-MMX", ff_simple_idct_mmx, MMX_SIMPLE_PERM, AV_CPU_FLAG_MMX },
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{ "XVID-MMX", ff_idct_xvid_mmx, NO_PERM, AV_CPU_FLAG_MMX, 1 },
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{ "XVID-MMXEXT", ff_idct_xvid_mmxext, NO_PERM, AV_CPU_FLAG_MMXEXT, 1 },
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{ "XVID-SSE2", ff_idct_xvid_sse2, SSE2_PERM, AV_CPU_FLAG_SSE2, 1 },
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#endif
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#if ARCH_BFIN
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{ "BFINidct", ff_bfin_idct, NO_PERM },
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#endif
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#if ARCH_ARM
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{ "SIMPLE-ARM", ff_simple_idct_arm, NO_PERM },
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{ "INT-ARM", ff_j_rev_dct_arm, MMX_PERM },
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#endif
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#if HAVE_ARMV5TE
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{ "SIMPLE-ARMV5TE", ff_simple_idct_armv5te,NO_PERM, AV_CPU_FLAG_ARMV5TE },
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#endif
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#if HAVE_ARMV6
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{ "SIMPLE-ARMV6", ff_simple_idct_armv6, MMX_PERM, AV_CPU_FLAG_ARMV6 },
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#endif
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#if HAVE_NEON
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{ "SIMPLE-NEON", ff_simple_idct_neon, PARTTRANS_PERM, AV_CPU_FLAG_NEON },
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#endif
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#if ARCH_ALPHA
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{ "SIMPLE-ALPHA", ff_simple_idct_axp, NO_PERM },
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#endif
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{ 0 }
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};
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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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static short idct_mmx_perm[64];
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static short idct_simple_mmx_perm[64] = {
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0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
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0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
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0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
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0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
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0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
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0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
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0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
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0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
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};
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static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
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static void idct_mmx_init(void)
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{
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int i;
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/* the mmx/mmxext idct uses a reordered input, so we patch scan tables */
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for (i = 0; i < 64; i++) {
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idct_mmx_perm[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
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}
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}
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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)
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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) % 512) - 256;
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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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block[av_lfg_get(prng) % 64] = av_lfg_get(prng) % 512 - 256;
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break;
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case 2:
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block[ 0] = av_lfg_get(prng) % 4096 - 2048;
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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], int perm)
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{
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int i;
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if (perm == MMX_PERM) {
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for (i = 0; i < 64; i++)
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dst[idct_mmx_perm[i]] = src[i];
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} else if (perm == MMX_SIMPLE_PERM) {
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for (i = 0; i < 64; i++)
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dst[idct_simple_mmx_perm[i]] = src[i];
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} else if (perm == SSE2_PERM) {
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for (i = 0; i < 64; i++)
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dst[(i & 0x38) | idct_sse2_row_perm[i & 7]] = src[i];
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} else if (perm == PARTTRANS_PERM) {
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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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} else {
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for (i = 0; i < 64; i++)
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dst[i] = src[i];
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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)
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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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int maxout = 0;
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int blockSumErrMax = 0, blockSumErr;
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AVLFG prng;
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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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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);
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permute(block, block1, dct->format);
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dct->func(block);
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emms_c();
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if (dct->format == SCALE_PERM) {
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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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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 += 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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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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printf("%s %s: ppe=%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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return 1;
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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);
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permute(block1, block, dct->format);
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ti = av_gettime();
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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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it1 += NB_ITS_SPEED;
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ti1 = av_gettime() - ti;
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} while (ti1 < 1000000);
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emms_c();
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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, int 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;
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for (k = 0; k < 4; k++)
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sum += c4[k][j] * block2[8 * (2 * k) + i];
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block3[8 * (2 * j) + i] = sum;
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/* bottom */
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sum = 0;
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for (k = 0; k < 4; k++)
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sum += c4[k][j] * block2[8 * (2 * k + 1) + i];
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block3[8 * (2 * j + 1) + i] = sum;
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}
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}
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/* clamp and store the result */
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for (i = 0; i < 8; i++) {
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for (j = 0; j < 8; j++) {
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v = block3[8 * i + j];
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if (v < 0) v = 0;
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else if (v > 255) v = 255;
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dest[i * linesize + j] = (int) rint(v);
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}
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}
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}
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static void idct248_error(const char *name,
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void (*idct248_put)(uint8_t *dest, int line_size,
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int16_t *block),
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int speed)
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{
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int it, i, it1, ti, ti1, err_max, v;
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AVLFG prng;
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av_lfg_init(&prng, 1);
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/* just one test to see if code is correct (precision is less
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important here) */
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err_max = 0;
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for (it = 0; it < NB_ITS; it++) {
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/* XXX: use forward transform to generate values */
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for (i = 0; i < 64; i++)
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block1[i] = av_lfg_get(&prng) % 256 - 128;
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block1[0] += 1024;
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for (i = 0; i < 64; i++)
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block[i] = block1[i];
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idct248_ref(img_dest1, 8, block);
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for (i = 0; i < 64; i++)
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block[i] = block1[i];
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idct248_put(img_dest, 8, block);
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for (i = 0; i < 64; i++) {
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v = abs((int) img_dest[i] - (int) img_dest1[i]);
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if (v == 255)
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printf("%d %d\n", img_dest[i], img_dest1[i]);
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if (v > err_max)
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err_max = v;
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}
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}
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printf("%s %s: err_inf=%d\n", 1 ? "IDCT248" : "DCT248", name, err_max);
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if (!speed)
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return;
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ti = av_gettime();
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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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for (i = 0; i < 64; i++)
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block[i] = block1[i];
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idct248_put(img_dest, 8, block);
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}
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it1 += NB_ITS_SPEED;
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ti1 = av_gettime() - ti;
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} while (ti1 < 1000000);
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emms_c();
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printf("%s %s: %0.1f kdct/s\n", 1 ? "IDCT248" : "DCT248", name,
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(double) it1 * 1000.0 / (double) ti1);
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}
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static void help(void)
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{
|
|
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"
|
|
"-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;
|
|
|
|
cpu_flags = av_get_cpu_flags();
|
|
|
|
ff_ref_dct_init();
|
|
idct_mmx_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]);
|
|
|
|
printf("Libav DCT/IDCT test\n");
|
|
|
|
if (test_248_dct) {
|
|
idct248_error("SIMPLE-C", ff_simple_idct248_put, speed);
|
|
} else {
|
|
const struct algo *algos = test_idct ? idct_tab : fdct_tab;
|
|
for (i = 0; algos[i].name; i++)
|
|
if (!(~cpu_flags & algos[i].mm_support)) {
|
|
err |= dct_error(&algos[i], test, test_idct, speed);
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|