1 files changed, 61 insertions, 0 deletions
diff --git a/utils/readtimings.c b/utils/readtimings.c
new file mode 100644
index 0000000..99a385e
--- /dev/null
+++ b/utils/readtimings.c
@@ -0,0 +1,61 @@
+/*
+ * Purpose: OSS built in tracing reader
+ *
+ * Description:
+ * This program is used to read timing/tracing information produced by the
+ * built in tracing facility of OSS.
+ *
+ * To use this program you need to rebuild OSS with the DO_TIMINGS macro
+ * defined. This macro is located in the os.h file for the target operating
+ * system. Output is written to stdout. Tracing information is currently
+ * produced only for the audio devices.
+ *
+ * To understand the output you need to be familiar with the internals of OSS.
+ */
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int
+main (void)
+{
+  int fd;
+  char buf[257 * 1024];
+  int l;
+
+  if ((fd = open ("/dev/mixer0", O_RDONLY, 0)) == -1)
+    {
+      perror ("/dev/mixer0");
+      exit (-1);
+    }
+
+  while (1)
+    {
+      if ((l = read (fd, buf, sizeof (buf))) < 0)
+	{
+	  perror ("read");
+	  exit (-1);
+	}
+
+      if (l)
+	write (1, buf, l);
+
+      usleep (100000);
+    }
+
+  close (fd);
+  exit (0);
+}