mirror of https://git.ffmpeg.org/ffmpeg.git
579 lines
16 KiB
C
579 lines
16 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <unistd.h>
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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 "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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void ff_mmx_idct(DCTELEM *data);
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void ff_mmxext_idct(DCTELEM *data);
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void odivx_idct_c(short *block);
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// BFIN
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void ff_bfin_idct(DCTELEM *block);
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void ff_bfin_fdct(DCTELEM *block);
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// ALTIVEC
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void fdct_altivec(DCTELEM *block);
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//void idct_altivec(DCTELEM *block);?? no routine
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// ARM
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void ff_j_rev_dct_arm(DCTELEM *data);
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void ff_simple_idct_arm(DCTELEM *data);
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void ff_simple_idct_armv5te(DCTELEM *data);
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void ff_simple_idct_armv6(DCTELEM *data);
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void ff_simple_idct_neon(DCTELEM *data);
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void ff_simple_idct_axp(DCTELEM *data);
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struct algo {
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const char *name;
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enum { FDCT, IDCT } is_idct;
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void (* func) (DCTELEM *block);
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void (* ref) (DCTELEM *block);
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enum formattag { NO_PERM,MMX_PERM, MMX_SIMPLE_PERM, SCALE_PERM, SSE2_PERM, PARTTRANS_PERM } format;
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int mm_support;
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};
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#ifndef FAAN_POSTSCALE
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#define FAAN_SCALE SCALE_PERM
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#else
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#define FAAN_SCALE NO_PERM
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#endif
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static int cpu_flags;
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struct algo algos[] = {
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{"REF-DBL", 0, ff_ref_fdct, ff_ref_fdct, NO_PERM},
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{"FAAN", 0, ff_faandct, ff_ref_fdct, FAAN_SCALE},
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{"FAANI", 1, ff_faanidct, ff_ref_idct, NO_PERM},
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{"IJG-AAN-INT", 0, fdct_ifast, ff_ref_fdct, SCALE_PERM},
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{"IJG-LLM-INT", 0, ff_jpeg_fdct_islow, ff_ref_fdct, NO_PERM},
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{"REF-DBL", 1, ff_ref_idct, ff_ref_idct, NO_PERM},
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{"INT", 1, j_rev_dct, ff_ref_idct, MMX_PERM},
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{"SIMPLE-C", 1, ff_simple_idct, ff_ref_idct, NO_PERM},
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#if HAVE_MMX
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{"MMX", 0, ff_fdct_mmx, ff_ref_fdct, NO_PERM, AV_CPU_FLAG_MMX},
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#if HAVE_MMX2
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{"MMX2", 0, ff_fdct_mmx2, ff_ref_fdct, NO_PERM, AV_CPU_FLAG_MMX2},
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{"SSE2", 0, ff_fdct_sse2, ff_ref_fdct, NO_PERM, AV_CPU_FLAG_SSE2},
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#endif
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#if CONFIG_GPL
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{"LIBMPEG2-MMX", 1, ff_mmx_idct, ff_ref_idct, MMX_PERM, AV_CPU_FLAG_MMX},
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{"LIBMPEG2-MMX2", 1, ff_mmxext_idct, ff_ref_idct, MMX_PERM, AV_CPU_FLAG_MMX2},
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#endif
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{"SIMPLE-MMX", 1, ff_simple_idct_mmx, ff_ref_idct, MMX_SIMPLE_PERM, AV_CPU_FLAG_MMX},
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{"XVID-MMX", 1, ff_idct_xvid_mmx, ff_ref_idct, NO_PERM, AV_CPU_FLAG_MMX},
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{"XVID-MMX2", 1, ff_idct_xvid_mmx2, ff_ref_idct, NO_PERM, AV_CPU_FLAG_MMX2},
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{"XVID-SSE2", 1, ff_idct_xvid_sse2, ff_ref_idct, SSE2_PERM, AV_CPU_FLAG_SSE2},
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#endif
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#if HAVE_ALTIVEC
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{"altivecfdct", 0, fdct_altivec, ff_ref_fdct, NO_PERM, AV_CPU_FLAG_ALTIVEC},
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#endif
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#if ARCH_BFIN
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{"BFINfdct", 0, ff_bfin_fdct, ff_ref_fdct, NO_PERM},
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{"BFINidct", 1, ff_bfin_idct, ff_ref_idct, NO_PERM},
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#endif
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#if ARCH_ARM
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{"SIMPLE-ARM", 1, ff_simple_idct_arm, ff_ref_idct, NO_PERM },
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{"INT-ARM", 1, ff_j_rev_dct_arm, ff_ref_idct, MMX_PERM },
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#if HAVE_ARMV5TE
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{"SIMPLE-ARMV5TE", 1, ff_simple_idct_armv5te, ff_ref_idct, NO_PERM },
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#endif
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#if HAVE_ARMV6
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{"SIMPLE-ARMV6", 1, ff_simple_idct_armv6, ff_ref_idct, MMX_PERM },
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#endif
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#if HAVE_NEON
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{"SIMPLE-NEON", 1, ff_simple_idct_neon, ff_ref_idct, PARTTRANS_PERM },
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#endif
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#endif /* ARCH_ARM */
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#if ARCH_ALPHA
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{"SIMPLE-ALPHA", 1, ff_simple_idct_axp, ff_ref_idct, 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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uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
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static int64_t gettime(void)
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{
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struct timeval tv;
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gettimeofday(&tv,NULL);
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return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
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}
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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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// idct_simple_mmx_perm[i] = simple_block_permute_op(i);
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}
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}
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DECLARE_ALIGNED(16, static DCTELEM, block)[64];
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DECLARE_ALIGNED(8, static DCTELEM, block1)[64];
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DECLARE_ALIGNED(8, static DCTELEM, block_org)[64];
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static inline void mmx_emms(void)
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{
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#if HAVE_MMX
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if (cpu_flags & AV_CPU_FLAG_MMX)
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__asm__ volatile ("emms\n\t");
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#endif
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}
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static void dct_error(const char *name, int is_idct,
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void (*fdct_func)(DCTELEM *block),
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void (*fdct_ref)(DCTELEM *block), int form, int test)
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{
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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;
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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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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++) sysErr[i]=0;
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for(it=0;it<NB_ITS;it++) {
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for(i=0;i<64;i++)
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block1[i] = 0;
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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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block1[i] = (av_lfg_get(&prng) % 512) -256;
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if (is_idct){
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ff_ref_fdct(block1);
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for(i=0;i<64;i++)
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block1[i]>>=3;
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}
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break;
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case 1:{
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int num = av_lfg_get(&prng) % 10 + 1;
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for(i=0;i<num;i++)
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block1[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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block1[0] = av_lfg_get(&prng) % 4096 - 2048;
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block1[63]= (block1[0]&1)^1;
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break;
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}
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#if 0 // simulate mismatch control
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{ int sum=0;
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for(i=0;i<64;i++)
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sum+=block1[i];
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if((sum&1)==0) block1[63]^=1;
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}
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#endif
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for(i=0; i<64; i++)
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block_org[i]= block1[i];
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if (form == MMX_PERM) {
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for(i=0;i<64;i++)
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block[idct_mmx_perm[i]] = block1[i];
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} else if (form == MMX_SIMPLE_PERM) {
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for(i=0;i<64;i++)
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block[idct_simple_mmx_perm[i]] = block1[i];
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} else if (form == SSE2_PERM) {
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for(i=0; i<64; i++)
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block[(i&0x38) | idct_sse2_row_perm[i&7]] = block1[i];
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} else if (form == PARTTRANS_PERM) {
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for(i=0; i<64; i++)
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block[(i&0x24) | ((i&3)<<3) | ((i>>3)&3)] = block1[i];
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} else {
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for(i=0; i<64; i++)
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block[i]= block1[i];
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}
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#if 0 // simulate mismatch control for tested IDCT but not the ref
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{ int sum=0;
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for(i=0;i<64;i++)
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sum+=block[i];
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if((sum&1)==0) block[63]^=1;
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}
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#endif
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fdct_func(block);
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mmx_emms();
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if (form == 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 /*+ (1<<(AANSCALE_BITS-1))*/) >> AANSCALE_BITS;
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}
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}
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fdct_ref(block1);
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blockSumErr=0;
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for(i=0;i<64;i++) {
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v = abs(block[i] - block1[i]);
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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) maxout=abs(block[i]);
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}
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if(blockSumErrMax < blockSumErr) blockSumErrMax= blockSumErr;
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#if 0 // print different matrix pairs
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if(blockSumErr){
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printf("\n");
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for(i=0; i<64; i++){
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if((i&7)==0) printf("\n");
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printf("%4d ", block_org[i]);
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}
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for(i=0; i<64; i++){
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if((i&7)==0) printf("\n");
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printf("%4d ", block[i] - block1[i]);
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}
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}
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#endif
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}
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for(i=0; i<64; i++) sysErrMax= FFMAX(sysErrMax, FFABS(sysErr[i]));
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for(i=0; i<64; i++){
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if(i%8==0) 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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printf("%s %s: err_inf=%d err2=%0.8f syserr=%0.8f maxout=%d blockSumErr=%d\n",
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is_idct ? "IDCT" : "DCT",
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name, err_inf, (double)err2 / NB_ITS / 64.0, (double)sysErrMax / NB_ITS, maxout, blockSumErrMax);
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/* speed test */
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for(i=0;i<64;i++)
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block1[i] = 0;
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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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block1[i] = av_lfg_get(&prng) % 512 -256;
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if (is_idct){
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ff_ref_fdct(block1);
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for(i=0;i<64;i++)
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block1[i]>>=3;
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}
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break;
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case 1:{
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case 2:
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block1[0] = av_lfg_get(&prng) % 512 -256;
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block1[1] = av_lfg_get(&prng) % 512 -256;
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block1[2] = av_lfg_get(&prng) % 512 -256;
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block1[3] = av_lfg_get(&prng) % 512 -256;
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}break;
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}
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if (form == MMX_PERM) {
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for(i=0;i<64;i++)
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block[idct_mmx_perm[i]] = block1[i];
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} else if(form == MMX_SIMPLE_PERM) {
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for(i=0;i<64;i++)
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block[idct_simple_mmx_perm[i]] = block1[i];
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} else {
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for(i=0; i<64; i++)
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block[i]= block1[i];
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}
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ti = 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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// memcpy(block, block1, sizeof(DCTELEM) * 64);
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// do not memcpy especially not fastmemcpy because it does movntq !!!
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fdct_func(block);
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}
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it1 += NB_ITS_SPEED;
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ti1 = gettime() - ti;
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} while (ti1 < 1000000);
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mmx_emms();
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printf("%s %s: %0.1f kdct/s\n",
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is_idct ? "IDCT" : "DCT",
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name, (double)it1 * 1000.0 / (double)ti1);
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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] = (block[8*(2*i)+j] + block[8*(2*i+1)+j]) * s;
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block1[8*(2*i+1)+j] = (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 */
|
|
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, int line_size, int16_t *block))
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
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);
|
|
mmx_emms();
|
|
|
|
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>]\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, test_248_dct = 0;
|
|
int c,i;
|
|
int test=1;
|
|
cpu_flags = av_get_cpu_flags();
|
|
|
|
ff_ref_dct_init();
|
|
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();
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if(optind <argc) test= atoi(argv[optind]);
|
|
|
|
printf("ffmpeg DCT/IDCT test\n");
|
|
|
|
if (test_248_dct) {
|
|
idct248_error("SIMPLE-C", ff_simple_idct248_put);
|
|
} else {
|
|
for (i=0;algos[i].name;i++)
|
|
if (algos[i].is_idct == test_idct && !(~cpu_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;
|
|
}
|