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/*

 * (c) 2001 Fabrice Bellard

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

/**

 * @file

 * motion test.

 */

#include 

#include 

#include 

#include "config.h"

#include "dsputil.h"

#include "libavutil/internal.h"

#include "libavutil/lfg.h"

#include "libavutil/mem.h"

#include "libavutil/time.h"

#undef printf

#define WIDTH 64

#define HEIGHT 64

static uint8_t img1[WIDTH * HEIGHT];

static uint8_t img2[WIDTH * HEIGHT];

static void fill_random(uint8_t *tab, int size)

{

    int i;

    AVLFG prng;

    av_lfg_init(&prng, 1);

    for(i=0;i

        tab[i] = av_lfg_get(&prng) % 256;

    }

}

static void help(void)

{

    printf("motion-test [-h]\n"

           "test motion implementations\n");

}

#define NB_ITS 500

int dummy;

static void test_motion(const char *name,

                 me_cmp_func test_func, me_cmp_func ref_func)

{

    int x, y, d1, d2, it;

    uint8_t *ptr;

    int64_t ti;

    printf("testing '%s'\n", name);

    /* test correctness */

    for(it=0;it<20;it++) {

        fill_random(img1, WIDTH * HEIGHT);

        fill_random(img2, WIDTH * HEIGHT);

        for(y=0;y

            for(x=0;x

                ptr = img2 + y * WIDTH + x;

                d1 = test_func(NULL, img1, ptr, WIDTH, 8);

                d2 = ref_func(NULL, img1, ptr, WIDTH, 8);

                if (d1 != d2) {

                    printf("error: mmx=%d c=%d\n", d1, d2);

                }

            }

        }

    }

    emms_c();

    /* speed test */

    ti = av_gettime();

    d1 = 0;

    for(it=0;it

        for(y=0;y

            for(x=0;x

                ptr = img2 + y * WIDTH + x;

                d1 += test_func(NULL, img1, ptr, WIDTH, 8);

            }

        }

    }

    emms_c();

    dummy = d1; /* avoid optimization */

    ti = av_gettime() - ti;

    printf("  %0.0f kop/s\n",

           (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /

           (double)(ti / 1000.0));

}

int main(int argc, char **argv)

{

    AVCodecContext *ctx;

    int c;

    DSPContext cctx, mmxctx;

    int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMXEXT };

    int flags_size = HAVE_MMXEXT ? 2 : 1;

    if (argc > 1) {

        help();

        return 1;

    }

    printf("ffmpeg motion test\n");

    ctx = avcodec_alloc_context3(NULL);

    ctx->flags |= CODEC_FLAG_BITEXACT;

    memset(&cctx, 0, sizeof(cctx));

    ff_dsputil_init(&cctx, ctx);

    for (c = 0; c < flags_size; c++) {

        int x;

        av_force_cpu_flags(flags[c]);

        memset(&mmxctx, 0, sizeof(mmxctx));

        ff_dsputil_init(&mmxctx, ctx);

        for (x = 0; x < 2; x++) {

            printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",

                   x ? 8 : 16, x ? 8 : 16);

            test_motion("mmx",     mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);

            test_motion("mmx_x2",  mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);

            test_motion("mmx_y2",  mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);

            test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);

        }

    }

    av_free(ctx);

    return 0;

}