X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Ffft-test.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Ffft-test.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=4a3ac9f54025b00b2045e660595d58aa35eba18c;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git

diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/fft-test.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/fft-test.c
deleted file mode 100644
index 4a3ac9f..0000000
--- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/fft-test.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/**
- * @file fft-test.c
- * FFT and MDCT tests.
- */
-
-#include "dsputil.h"
-#include <math.h>
-#include <unistd.h>
-#include <sys/time.h>
-
-int mm_flags;
-
-/* reference fft */
-
-#define MUL16(a,b) ((a) * (b))
-
-#define CMAC(pre, pim, are, aim, bre, bim) \
-{\
-   pre += (MUL16(are, bre) - MUL16(aim, bim));\
-   pim += (MUL16(are, bim) + MUL16(bre, aim));\
-}
-
-FFTComplex *exptab;
-
-void fft_ref_init(int nbits, int inverse)
-{
-    int n, i;
-    float c1, s1, alpha;
-
-    n = 1 << nbits;
-    exptab = av_malloc((n / 2) * sizeof(FFTComplex));
-
-    for(i=0;i<(n/2);i++) {
-        alpha = 2 * M_PI * (float)i / (float)n;
-        c1 = cos(alpha);
-        s1 = sin(alpha);
-        if (!inverse)
-            s1 = -s1;
-        exptab[i].re = c1;
-        exptab[i].im = s1;
-    }
-}
-
-void fft_ref(FFTComplex *tabr, FFTComplex *tab, int nbits)
-{
-    int n, i, j, k, n2;
-    float tmp_re, tmp_im, s, c;
-    FFTComplex *q;
-
-    n = 1 << nbits;
-    n2 = n >> 1;
-    for(i=0;i<n;i++) {
-        tmp_re = 0;
-        tmp_im = 0;
-        q = tab;
-        for(j=0;j<n;j++) {
-            k = (i * j) & (n - 1);
-            if (k >= n2) {
-                c = -exptab[k - n2].re;
-                s = -exptab[k - n2].im;
-            } else {
-                c = exptab[k].re;
-                s = exptab[k].im;
-            }
-            CMAC(tmp_re, tmp_im, c, s, q->re, q->im);
-            q++;
-        }
-        tabr[i].re = tmp_re;
-        tabr[i].im = tmp_im;
-    }
-}
-
-void imdct_ref(float *out, float *in, int n)
-{
-    int k, i, a;
-    float sum, f;
-
-    for(i=0;i<n;i++) {
-        sum = 0;
-        for(k=0;k<n/2;k++) {
-            a = (2 * i + 1 + (n / 2)) * (2 * k + 1);
-            f = cos(M_PI * a / (double)(2 * n));
-            sum += f * in[k];
-        }
-        out[i] = -sum;
-    }
-}
-
-/* NOTE: no normalisation by 1 / N is done */
-void mdct_ref(float *output, float *input, int n)
-{
-    int k, i;
-    float a, s;
-
-    /* do it by hand */
-    for(k=0;k<n/2;k++) {
-        s = 0;
-        for(i=0;i<n;i++) {
-            a = (2*M_PI*(2*i+1+n/2)*(2*k+1) / (4 * n));
-            s += input[i] * cos(a);
-        }
-        output[k] = s;
-    }
-}
-
-
-float frandom(void)
-{
-    return (float)((random() & 0xffff) - 32768) / 32768.0;
-}
-
-int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
-void check_diff(float *tab1, float *tab2, int n)
-{
-    int i;
-
-    for(i=0;i<n;i++) {
-        if (fabsf(tab1[i] - tab2[i]) >= 1e-3) {
-            printf("ERROR %d: %f %f\n", 
-                   i, tab1[i], tab2[i]);
-        }
-    }
-}
-
-
-void help(void)
-{
-    printf("usage: fft-test [-h] [-s] [-i] [-n b]\n"
-           "-h     print this help\n"
-           "-s     speed test\n"
-           "-m     (I)MDCT test\n"
-           "-i     inverse transform test\n"
-           "-n b   set the transform size to 2^b\n"
-           );
-    exit(1);
-}
-
-
-
-int main(int argc, char **argv)
-{
-    FFTComplex *tab, *tab1, *tab_ref;
-    FFTSample *tabtmp, *tab2;
-    int it, i, c;
-    int do_speed = 0;
-    int do_mdct = 0;
-    int do_inverse = 0;
-    FFTContext s1, *s = &s1;
-    MDCTContext m1, *m = &m1;
-    int fft_nbits, fft_size;
-
-    mm_flags = 0;
-    fft_nbits = 9;
-    for(;;) {
-        c = getopt(argc, argv, "hsimn:");
-        if (c == -1)
-            break;
-        switch(c) {
-        case 'h':
-            help();
-            break;
-        case 's':
-            do_speed = 1;
-            break;
-        case 'i':
-            do_inverse = 1;
-            break;
-        case 'm':
-            do_mdct = 1;
-            break;
-        case 'n':
-            fft_nbits = atoi(optarg);
-            break;
-        }
-    }
-
-    fft_size = 1 << fft_nbits;
-    tab = av_malloc(fft_size * sizeof(FFTComplex));
-    tab1 = av_malloc(fft_size * sizeof(FFTComplex));
-    tab_ref = av_malloc(fft_size * sizeof(FFTComplex));
-    tabtmp = av_malloc(fft_size / 2 * sizeof(FFTSample));
-    tab2 = av_malloc(fft_size * sizeof(FFTSample));
-
-    if (do_mdct) {
-        if (do_inverse)
-            printf("IMDCT");
-        else
-            printf("MDCT");
-        ff_mdct_init(m, fft_nbits, do_inverse);
-    } else {
-        if (do_inverse)
-            printf("IFFT");
-        else
-            printf("FFT");
-        fft_init(s, fft_nbits, do_inverse);
-        fft_ref_init(fft_nbits, do_inverse);
-    }
-    printf(" %d test\n", fft_size);
-
-    /* generate random data */
-
-    for(i=0;i<fft_size;i++) {
-        tab1[i].re = frandom();
-        tab1[i].im = frandom();
-    }
-
-    /* checking result */
-    printf("Checking...\n");
-
-    if (do_mdct) {
-        if (do_inverse) {
-            imdct_ref((float *)tab_ref, (float *)tab1, fft_size);
-            ff_imdct_calc(m, tab2, (float *)tab1, tabtmp);
-            check_diff((float *)tab_ref, tab2, fft_size);
-        } else {
-            mdct_ref((float *)tab_ref, (float *)tab1, fft_size);
-            
-            ff_mdct_calc(m, tab2, (float *)tab1, tabtmp);
-
-            check_diff((float *)tab_ref, tab2, fft_size / 2);
-        }
-    } else {
-        memcpy(tab, tab1, fft_size * sizeof(FFTComplex));
-        fft_permute(s, tab);
-        fft_calc(s, tab);
-        
-        fft_ref(tab_ref, tab1, fft_nbits);
-        check_diff((float *)tab_ref, (float *)tab, fft_size * 2);
-    }
-
-    /* do a speed test */
-
-    if (do_speed) {
-        int64_t time_start, duration;
-        int nb_its;
-
-        printf("Speed test...\n");
-        /* we measure during about 1 seconds */
-        nb_its = 1;
-        for(;;) {
-            time_start = gettime();
-            for(it=0;it<nb_its;it++) {
-                if (do_mdct) {
-                    if (do_inverse) {
-                        ff_imdct_calc(m, (float *)tab, (float *)tab1, tabtmp);
-                    } else {
-                        ff_mdct_calc(m, (float *)tab, (float *)tab1, tabtmp);
-                    }
-                } else {
-                    memcpy(tab, tab1, fft_size * sizeof(FFTComplex));
-                    fft_calc(s, tab);
-                }
-            }
-            duration = gettime() - time_start;
-            if (duration >= 1000000)
-                break;
-            nb_its *= 2;
-        }
-        printf("time: %0.1f us/transform [total time=%0.2f s its=%d]\n", 
-               (double)duration / nb_its, 
-               (double)duration / 1000000.0,
-               nb_its);
-    }
-    
-    if (do_mdct) {
-        ff_mdct_end(m);
-    } else {
-        fft_end(s);
-    }
-    return 0;
-}