Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / libzmpeg3 / a52dec-0.7.3 / test / compare.c

diff --git a/cinelerra-5.1/libzmpeg3/a52dec-0.7.3/test/compare.c b/cinelerra-5.1/libzmpeg3/a52dec-0.7.3/test/compare.c
new file mode 100644 (file)
index 0000000..f27f0d1
--- /dev/null
+++ b/cinelerra-5.1/libzmpeg3/a52dec-0.7.3/test/compare.c
@@ -0,0 +1,79 @@
+/*
+ * compare.c
+ * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * a52dec 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <stdio.h>
+#include <math.h>
+
+int main (int argc, char ** argv)
+{
+    FILE * f1;
+    FILE * f2;
+    float buf1[512];
+    float buf2[512];
+    int i, j;
+    int total = 0;
+    double max = 0, err = 0, square = 0;
+
+    if (argc != 3)
+       return 1;
+    f1 = fopen (argv[1], "rb");
+    f2 = fopen (argv[2], "rb");
+    if ((f1 == NULL) || (f2 == NULL)) {
+       printf ("cannot open file %s\n", (f1 == NULL) ? argv[1] : argv[2]);
+       return 1;
+    }
+    while (1) {
+       i = fread (buf1, sizeof (float), 512, f1);
+       j = fread (buf2, sizeof (float), 512, f2);
+       if ((i < 512) || (j < 512))
+           break;
+       for (i = 0; i < 512; i++) {
+           double delta;
+
+           delta = buf2[i] - buf1[i];
+           err += delta;
+           square += delta * delta;
+           if (delta > max)
+               max = delta;
+           if (-delta > max)
+               max = -delta;
+       }
+       total += 512;
+    }
+    if (i == j) {
+       err /= total;
+       square = (square / total) - (err * err);
+       if (square > 0)
+           square = 32768 * sqrt (square);
+       err *= 32768;
+       max *= 32768;
+       printf ("max error %f mean error %f standard deviation %f\n",
+               max, err, square);
+       return ((max > 0.01) || (err > 0.001) || (square > 0.001));
+    }
+    if (i < j)
+       printf ("%s is too short\n", argv[1]);
+    else
+       printf ("%s is too short\n", argv[2]);
+    return 1;
+}