Merge commit '6eb2505855fa832ba7d0a1c2fb9f92c41c5446e3'

[ffmpeg] / libavdevice / timefilter.c

diff --git a/libavdevice/timefilter.c b/libavdevice/timefilter.c
index a4ae20413984b79c75bb7e2a75adc5efb60049cc..ad6485d5e7807a29ee33a158c5cd3b3d3fa12b06 100644 (file)
--- a/libavdevice/timefilter.c
+++ b/libavdevice/timefilter.c
@@ -89,80 +89,3 @@ double ff_timefilter_eval(TimeFilter *self, double delta)
 {
     return self->cycle_time + self->clock_period * delta;
 }
-
-#ifdef TEST
-#include "libavutil/lfg.h"
-#define LFG_MAX ((1LL << 32) - 1)
-
-int main(void)
-{
-    AVLFG prng;
-    double n0, n1;
-#define SAMPLES 1000
-    double ideal[SAMPLES];
-    double samples[SAMPLES];
-    double samplet[SAMPLES];
-    for (n0 = 0; n0 < 40; n0 = 2 * n0 + 1) {
-        for (n1 = 0; n1 < 10; n1 = 2 * n1 + 1) {
-            double best_error = 1000000000;
-            double bestpar0   = n0 ? 1 : 100000;
-            double bestpar1   = 1;
-            int better, i;
-
-            av_lfg_init(&prng, 123);
-            for (i = 0; i < SAMPLES; i++) {
-                samplet[i] = 10 + i + (av_lfg_get(&prng) < LFG_MAX/2 ? 0 : 0.999);
-                ideal[i]   = samplet[i] + n1 * i / (1000);
-                samples[i] = ideal[i] + n0 * (av_lfg_get(&prng) - LFG_MAX / 2) / (LFG_MAX * 10LL);
-                if(i && samples[i]<samples[i-1])
-                    samples[i]=samples[i-1]+0.001;
-            }
-
-            do {
-                double par0, par1;
-                better = 0;
-                for (par0 = bestpar0 * 0.8; par0 <= bestpar0 * 1.21; par0 += bestpar0 * 0.05) {
-                    for (par1 = bestpar1 * 0.8; par1 <= bestpar1 * 1.21; par1 += bestpar1 * 0.05) {
-                        double error   = 0;
-                        TimeFilter *tf = ff_timefilter_new(1, par0, par1);
-                        if (!tf) {
-                            printf("Could not allocate memory for timefilter.\n");
-                            exit(1);
-                        }
-                        for (i = 0; i < SAMPLES; i++) {
-                            double filtered;
-                            filtered = ff_timefilter_update(tf, samples[i], i ? (samplet[i] - samplet[i-1]) : 1);
-                            if(filtered < 0 || filtered > 1000000000)
-                                printf("filter is unstable\n");
-                            error   += (filtered - ideal[i]) * (filtered - ideal[i]);
-                        }
-                        ff_timefilter_destroy(tf);
-                        if (error < best_error) {
-                            best_error = error;
-                            bestpar0   = par0;
-                            bestpar1   = par1;
-                            better     = 1;
-                        }
-                    }
-                }
-            } while (better);
-#if 0
-            double lastfil = 9;
-            TimeFilter *tf = ff_timefilter_new(1, bestpar0, bestpar1);
-            for (i = 0; i < SAMPLES; i++) {
-                double filtered;
-                filtered = ff_timefilter_update(tf, samples[i], 1);
-                printf("%f %f %f %f\n", i - samples[i] + 10, filtered - samples[i],
-                       samples[FFMAX(i, 1)] - samples[FFMAX(i - 1, 0)], filtered - lastfil);
-                lastfil = filtered;
-            }
-            ff_timefilter_destroy(tf);
-#else
-            printf(" [%12f %11f %9f]", bestpar0, bestpar1, best_error);
-#endif
-        }
-        printf("\n");
-    }
-    return 0;
-}
-#endif