tests: Move all test programs to a subdirectory

1 files changed, 472 insertions, 0 deletions

diff --git a/libavcodec/tests/dct.c b/libavcodec/tests/dct.c
new file mode 100644
index 0000000000..6c6a4e0d0d
--- /dev/null
+++ b/libavcodec/tests/dct.c
@@ -0,0 +1,472 @@
+/*
+ * (c) 2001 Fabrice Bellard
+ *     2007 Marc Hoffman <marc.hoffman@analog.com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * DCT test (c) 2001 Fabrice Bellard
+ * Started from sample code by Juan J. Sierralta P.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <math.h>
+
+#include "libavutil/cpu.h"
+#include "libavutil/common.h"
+#include "libavutil/internal.h"
+#include "libavutil/lfg.h"
+#include "libavutil/time.h"
+
+#include "libavcodec/aandcttab.h"
+#include "libavcodec/dct.h"
+#include "libavcodec/dctref.h"
+#include "libavcodec/faandct.h"
+#include "libavcodec/faanidct.h"
+#include "libavcodec/idctdsp.h"
+#include "libavcodec/simple_idct.h"
+#include "libavcodec/xvididct.h"
+
+struct algo {
+    const char *name;
+    void (*func)(int16_t *block);
+    enum idct_permutation_type perm_type;
+    int cpu_flag;
+    int nonspec;
+};
+
+static const struct algo fdct_tab[] = {
+    { "REF-DBL",     ff_ref_fdct,          FF_IDCT_PERM_NONE },
+    { "IJG-AAN-INT", ff_fdct_ifast,        FF_IDCT_PERM_NONE },
+    { "IJG-LLM-INT", ff_jpeg_fdct_islow_8, FF_IDCT_PERM_NONE },
+#if CONFIG_FAANDCT
+    { "FAAN",        ff_faandct,           FF_IDCT_PERM_NONE },
+#endif /* CONFIG_FAANDCT */
+};
+
+static const struct algo idct_tab[] = {
+    { "REF-DBL",     ff_ref_idct,          FF_IDCT_PERM_NONE },
+    { "INT",         ff_j_rev_dct,         FF_IDCT_PERM_LIBMPEG2 },
+    { "SIMPLE-C",    ff_simple_idct_8,     FF_IDCT_PERM_NONE },
+#if CONFIG_FAANIDCT
+    { "FAANI",       ff_faanidct,          FF_IDCT_PERM_NONE },
+#endif /* CONFIG_FAANIDCT */
+#if CONFIG_MPEG4_DECODER
+    { "XVID",        ff_xvid_idct,         FF_IDCT_PERM_NONE, 0, 1 },
+#endif /* CONFIG_MPEG4_DECODER */
+};
+
+#if ARCH_ARM
+#include "arm/dct.c"
+#elif ARCH_PPC
+#include "ppc/dct.c"
+#elif ARCH_X86
+#include "x86/dct.c"
+#else
+static const struct algo fdct_tab_arch[] = { { 0 } };
+static const struct algo idct_tab_arch[] = { { 0 } };
+#endif
+
+#define AANSCALE_BITS 12
+
+#define NB_ITS 20000
+#define NB_ITS_SPEED 50000
+
+DECLARE_ALIGNED(16, static int16_t, block)[64];
+DECLARE_ALIGNED(8,  static int16_t, block1)[64];
+
+static void init_block(int16_t block[64], int test, int is_idct, AVLFG *prng)
+{
+    int i, j;
+
+    memset(block, 0, 64 * sizeof(*block));
+
+    switch (test) {
+    case 0:
+        for (i = 0; i < 64; i++)
+            block[i] = (av_lfg_get(prng) % 512) - 256;
+        if (is_idct) {
+            ff_ref_fdct(block);
+            for (i = 0; i < 64; i++)
+                block[i] >>= 3;
+        }
+        break;
+    case 1:
+        j = av_lfg_get(prng) % 10 + 1;
+        for (i = 0; i < j; i++)
+            block[av_lfg_get(prng) % 64] = av_lfg_get(prng) % 512 - 256;
+        break;
+    case 2:
+        block[ 0] = av_lfg_get(prng) % 4096 - 2048;
+        block[63] = (block[0] & 1) ^ 1;
+        break;
+    }
+}
+
+static void permute(int16_t dst[64], const int16_t src[64],
+                    enum idct_permutation_type perm_type)
+{
+    int i;
+
+#if ARCH_X86
+    if (permute_x86(dst, src, perm_type))
+        return;
+#endif
+
+    switch (perm_type) {
+    case FF_IDCT_PERM_LIBMPEG2:
+        for (i = 0; i < 64; i++)
+            dst[(i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2)] = src[i];
+        break;
+    case FF_IDCT_PERM_PARTTRANS:
+        for (i = 0; i < 64; i++)
+            dst[(i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3)] = src[i];
+        break;
+    default:
+        for (i = 0; i < 64; i++)
+            dst[i] = src[i];
+        break;
+    }
+}
+
+static int dct_error(const struct algo *dct, int test, int is_idct, int speed)
+{
+    void (*ref)(int16_t *block) = is_idct ? ff_ref_idct : ff_ref_fdct;
+    int it, i, scale;
+    int err_inf, v;
+    int64_t err2, ti, ti1, it1, err_sum = 0;
+    int64_t sysErr[64], sysErrMax = 0;
+    int maxout = 0;
+    int blockSumErrMax = 0, blockSumErr;
+    AVLFG prng;
+    double omse, ome;
+    int spec_err;
+
+    av_lfg_init(&prng, 1);
+
+    err_inf = 0;
+    err2 = 0;
+    for (i = 0; i < 64; i++)
+        sysErr[i] = 0;
+    for (it = 0; it < NB_ITS; it++) {
+        init_block(block1, test, is_idct, &prng);
+        permute(block, block1, dct->perm_type);
+
+        dct->func(block);
+        emms_c();
+
+        if (!strcmp(dct->name, "IJG-AAN-INT")) {
+            for (i = 0; i < 64; i++) {
+                scale = 8 * (1 << (AANSCALE_BITS + 11)) / ff_aanscales[i];
+                block[i] = (block[i] * scale) >> AANSCALE_BITS;
+            }
+        }
+
+        ref(block1);
+
+        blockSumErr = 0;
+        for (i = 0; i < 64; i++) {
+            int err = block[i] - block1[i];
+            err_sum += err;
+            v = abs(err);
+            if (v > err_inf)
+                err_inf = v;
+            err2 += v * v;
+            sysErr[i] += block[i] - block1[i];
+            blockSumErr += v;
+            if (abs(block[i]) > maxout)
+                maxout = abs(block[i]);
+        }
+        if (blockSumErrMax < blockSumErr)
+            blockSumErrMax = blockSumErr;
+    }
+    for (i = 0; i < 64; i++)
+        sysErrMax = FFMAX(sysErrMax, FFABS(sysErr[i]));
+
+    for (i = 0; i < 64; i++) {
+        if (i % 8 == 0)
+            printf("\n");
+        printf("%7d ", (int) sysErr[i]);
+    }
+    printf("\n");
+
+    omse = (double) err2 / NB_ITS / 64;
+    ome  = (double) err_sum / NB_ITS / 64;
+
+    spec_err = is_idct && (err_inf > 1 || omse > 0.02 || fabs(ome) > 0.0015);
+
+    printf("%s %s: ppe=%d omse=%0.8f ome=%0.8f syserr=%0.8f maxout=%d blockSumErr=%d\n",
+           is_idct ? "IDCT" : "DCT", dct->name, err_inf,
+           omse, ome, (double) sysErrMax / NB_ITS,
+           maxout, blockSumErrMax);
+
+    if (spec_err && !dct->nonspec)
+        return 1;
+
+    if (!speed)
+        return 0;
+
+    /* speed test */
+    init_block(block, test, is_idct, &prng);
+    permute(block1, block, dct->perm_type);
+
+    ti = av_gettime_relative();
+    it1 = 0;
+    do {
+        for (it = 0; it < NB_ITS_SPEED; it++) {
+            memcpy(block, block1, sizeof(block));
+            dct->func(block);
+        }
+        it1 += NB_ITS_SPEED;
+        ti1 = av_gettime_relative() - ti;
+    } while (ti1 < 1000000);
+    emms_c();
+
+    printf("%s %s: %0.1f kdct/s\n", is_idct ? "IDCT" : "DCT", dct->name,
+           (double) it1 * 1000.0 / (double) ti1);
+
+    return 0;
+}
+
+DECLARE_ALIGNED(8, static uint8_t, img_dest)[64];
+DECLARE_ALIGNED(8, static uint8_t, img_dest1)[64];
+
+static void idct248_ref(uint8_t *dest, int linesize, int16_t *block)
+{
+    static int init;
+    static double c8[8][8];
+    static double c4[4][4];
+    double block1[64], block2[64], block3[64];
+    double s, sum, v;
+    int i, j, k;
+
+    if (!init) {
+        init = 1;
+
+        for (i = 0; i < 8; i++) {
+            sum = 0;
+            for (j = 0; j < 8; j++) {
+                s = (i == 0) ? sqrt(1.0 / 8.0) : sqrt(1.0 / 4.0);
+                c8[i][j] = s * cos(M_PI * i * (j + 0.5) / 8.0);
+                sum += c8[i][j] * c8[i][j];
+            }
+        }
+
+        for (i = 0; i < 4; i++) {
+            sum = 0;
+            for (j = 0; j < 4; j++) {
+                s = (i == 0) ? sqrt(1.0 / 4.0) : sqrt(1.0 / 2.0);
+                c4[i][j] = s * cos(M_PI * i * (j + 0.5) / 4.0);
+                sum += c4[i][j] * c4[i][j];
+            }
+        }
+    }
+
+    /* butterfly */
+    s = 0.5 * sqrt(2.0);
+    for (i = 0; i < 4; i++) {
+        for (j = 0; j < 8; j++) {
+            block1[8 * (2 * i) + j] =
+                (block[8 * (2 * i) + j] + block[8 * (2 * i + 1) + j]) * s;
+            block1[8 * (2 * i + 1) + j] =
+                (block[8 * (2 * i) + j] - block[8 * (2 * i + 1) + j]) * s;
+        }
+    }
+
+    /* idct8 on lines */
+    for (i = 0; i < 8; i++) {
+        for (j = 0; j < 8; j++) {
+            sum = 0;
+            for (k = 0; k < 8; k++)
+                sum += c8[k][j] * block1[8 * i + k];
+            block2[8 * i + j] = sum;
+        }
+    }
+
+    /* idct4 */
+    for (i = 0; i < 8; i++) {
+        for (j = 0; j < 4; j++) {
+            /* top */
+            sum = 0;
+            for (k = 0; k < 4; k++)
+                sum += c4[k][j] * block2[8 * (2 * k) + i];
+            block3[8 * (2 * j) + i] = sum;
+
+            /* bottom */
+            sum = 0;
+            for (k = 0; k < 4; k++)
+                sum += c4[k][j] * block2[8 * (2 * k + 1) + i];
+            block3[8 * (2 * j + 1) + i] = sum;
+        }
+    }
+
+    /* clamp and store the result */
+    for (i = 0; i < 8; i++) {
+        for (j = 0; j < 8; j++) {
+            v = block3[8 * i + j];
+            if      (v < 0)   v = 0;
+            else if (v > 255) v = 255;
+            dest[i * linesize + j] = (int) rint(v);
+        }
+    }
+}
+
+static void idct248_error(const char *name,
+                          void (*idct248_put)(uint8_t *dest, int 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;
+        }
+    }
+    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);
+        }
+        it1 += NB_ITS_SPEED;
+        ti1 = av_gettime_relative() - ti;
+    } while (ti1 < 1000000);
+    emms_c();
+
+    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 MPEG-4 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;
+
+    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]);
+
+    printf("Libav 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);
+
+            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);
+        }
+#if CONFIG_FDCTDSP
+        else {
+            for (i = 0; i < FF_ARRAY_ELEMS(fdct_tab); i++)
+                err |= dct_error(&fdct_tab[i], test, test_idct, speed);
+
+            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);
+        }
+#endif /* CONFIG_FDCTDSP */
+    }
+
+    if (err)
+        printf("Error: %d.\n", err);
+
+    return !!err;
+}