1 files changed, 0 insertions, 102 deletions
diff --git a/ffmpeg/libavutil/lfg.c b/ffmpeg/libavutil/lfg.c
deleted file mode 100644
index ffa2f1f..0000000
--- a/ffmpeg/libavutil/lfg.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Lagged Fibonacci PRNG
- * Copyright (c) 2008 Michael Niedermayer
- *
- * 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
- */
-
-#include <inttypes.h>
-#include <limits.h>
-#include <math.h>
-#include "lfg.h"
-#include "md5.h"
-#include "intreadwrite.h"
-#include "attributes.h"
-
-av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
-{
-    uint8_t tmp[16] = { 0 };
-    int i;
-
-    for (i = 8; i < 64; i += 4) {
-        AV_WL32(tmp, seed);
-        tmp[4] = i;
-        av_md5_sum(tmp, tmp, 16);
-        c->state[i    ] = AV_RL32(tmp);
-        c->state[i + 1] = AV_RL32(tmp + 4);
-        c->state[i + 2] = AV_RL32(tmp + 8);
-        c->state[i + 3] = AV_RL32(tmp + 12);
-    }
-    c->index = 0;
-}
-
-void av_bmg_get(AVLFG *lfg, double out[2])
-{
-    double x1, x2, w;
-
-    do {
-        x1 = 2.0 / UINT_MAX * av_lfg_get(lfg) - 1.0;
-        x2 = 2.0 / UINT_MAX * av_lfg_get(lfg) - 1.0;
-        w  = x1 * x1 + x2 * x2;
-    } while (w >= 1.0);
-
-    w = sqrt((-2.0 * log(w)) / w);
-    out[0] = x1 * w;
-    out[1] = x2 * w;
-}
-
-#ifdef TEST
-#include "log.h"
-#include "timer.h"
-
-int main(void)
-{
-    int x = 0;
-    int i, j;
-    AVLFG state;
-
-    av_lfg_init(&state, 0xdeadbeef);
-    for (j = 0; j < 10000; j++) {
-        START_TIMER
-        for (i = 0; i < 624; i++) {
-            //av_log(NULL, AV_LOG_ERROR, "%X\n", av_lfg_get(&state));
-            x += av_lfg_get(&state);
-        }
-        STOP_TIMER("624 calls of av_lfg_get");
-    }
-    av_log(NULL, AV_LOG_ERROR, "final value:%X\n", x);
-
-    /* BMG usage example */
-    {
-        double mean   = 1000;
-        double stddev = 53;
-
-        av_lfg_init(&state, 42);
-
-        for (i = 0; i < 1000; i += 2) {
-            double bmg_out[2];
-            av_bmg_get(&state, bmg_out);
-            av_log(NULL, AV_LOG_INFO,
-                   "%f\n%f\n",
-                   bmg_out[0] * stddev + mean,
-                   bmg_out[1] * stddev + mean);
-        }
-    }
-
-    return 0;
-}
-#endif