From 22e28216336da876e1fd17f380ce42eaf1446769 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Mon, 17 Feb 2014 13:36:38 +0000
Subject: chasing indexing error

---
 ffmpeg/libavutil/random_seed.c | 152 -----------------------------------------
 1 file changed, 152 deletions(-)
 delete mode 100644 ffmpeg/libavutil/random_seed.c

(limited to 'ffmpeg/libavutil/random_seed.c')

diff --git a/ffmpeg/libavutil/random_seed.c b/ffmpeg/libavutil/random_seed.c
deleted file mode 100644
index aa89024..0000000
--- a/ffmpeg/libavutil/random_seed.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com>
- *
- * 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 "config.h"
-
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_CRYPTGENRANDOM
-#include <windows.h>
-#include <wincrypt.h>
-#endif
-#include <fcntl.h>
-#include <math.h>
-#include <time.h>
-#include <string.h>
-#include "avassert.h"
-#include "internal.h"
-#include "timer.h"
-#include "random_seed.h"
-#include "sha.h"
-#include "intreadwrite.h"
-
-#ifndef TEST
-#define TEST 0
-#endif
-
-static int read_random(uint32_t *dst, const char *file)
-{
-#if HAVE_UNISTD_H
-    int fd = avpriv_open(file, O_RDONLY);
-    int err = -1;
-
-    if (fd == -1)
-        return -1;
-    err = read(fd, dst, sizeof(*dst));
-    close(fd);
-
-    return err;
-#else
-    return -1;
-#endif
-}
-
-static uint32_t get_generic_seed(void)
-{
-    uint8_t tmp[120];
-    struct AVSHA *sha = (void*)tmp;
-    clock_t last_t  = 0;
-    static uint64_t i = 0;
-    static uint32_t buffer[512] = {0};
-    unsigned char digest[20];
-    uint64_t last_i = i;
-
-    av_assert0(sizeof(tmp) >= av_sha_size);
-
-    if(TEST){
-        memset(buffer, 0, sizeof(buffer));
-        last_i = i = 0;
-    }else{
-#ifdef AV_READ_TIME
-        buffer[13] ^= AV_READ_TIME();
-        buffer[41] ^= AV_READ_TIME()>>32;
-#endif
-    }
-
-    for (;;) {
-        clock_t t = clock();
-
-        if(last_t == t){
-            buffer[i&511]++;
-        }else{
-            buffer[++i&511]+= (t-last_t) % 3294638521U;
-            if(last_i && i-last_i > 4 || i-last_i > 64 || TEST && i-last_i > 8)
-                break;
-        }
-        last_t = t;
-    }
-
-    if(TEST)
-        buffer[0] = buffer[1] = 0;
-
-    av_sha_init(sha, 160);
-    av_sha_update(sha, (uint8_t*)buffer, sizeof(buffer));
-    av_sha_final(sha, digest);
-    return AV_RB32(digest) + AV_RB32(digest+16);
-}
-
-uint32_t av_get_random_seed(void)
-{
-    uint32_t seed;
-
-#if HAVE_CRYPTGENRANDOM
-    HCRYPTPROV provider;
-    if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL,
-                            CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
-        BOOL ret = CryptGenRandom(provider, sizeof(seed), (PBYTE) &seed);
-        CryptReleaseContext(provider, 0);
-        if (ret)
-            return seed;
-    }
-#endif
-
-    if (read_random(&seed, "/dev/urandom") == sizeof(seed))
-        return seed;
-    if (read_random(&seed, "/dev/random")  == sizeof(seed))
-        return seed;
-    return get_generic_seed();
-}
-
-#if TEST
-#undef printf
-#define N 256
-#include <stdio.h>
-
-int main(void)
-{
-    int i, j, retry;
-    uint32_t seeds[N];
-
-    for (retry=0; retry<3; retry++){
-        for (i=0; i<N; i++){
-            seeds[i] = av_get_random_seed();
-            for (j=0; j<i; j++)
-                if (seeds[j] == seeds[i])
-                    goto retry;
-        }
-        printf("seeds OK\n");
-        return 0;
-        retry:;
-    }
-    printf("FAIL at %d with %X\n", j, seeds[j]);
-    return 1;
-}
-#endif
-- 
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