early-access version 1432

externals/ffmpeg/libavutil/tests/random_seed.c

@@ -0,0 +1,55 @@
+/*
+ * 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
+ */
+
+#define TEST 1
+#include "libavutil/random_seed.c"
+
+#undef printf
+#define N 256
+#define F 2
+#include <stdio.h>
+
+typedef uint32_t (*random_seed_ptr_t)(void);
+
+int main(void)
+{
+    int i, j, rsf, retry;
+    uint32_t seeds[N];
+    random_seed_ptr_t random_seed[F] = {av_get_random_seed, get_generic_seed};
+
+    for (rsf=0; rsf<F; ++rsf){
+        for (retry=0; retry<3; retry++){
+            for (i=0; i<N; i++){
+                seeds[i] = random_seed[rsf]();
+                for (j=0; j<i; j++)
+                    if (seeds[j] == seeds[i])
+                        goto retry;
+            }
+            printf("seeds OK\n");
+            break;
+            retry:;
+        }
+        if (retry >= 3) {
+            printf("rsf %d: FAIL at %d with %"PRIX32"\n", rsf, j, seeds[j]);
+            return 1;
+        }
+    }
+    return 0;
+}