added interval structures

1 files changed, 53 insertions, 0 deletions

diff --git a/include/tinyalsa/interval.h b/include/tinyalsa/interval.h
new file mode 100644
index 0000000..3f6f3dc
--- /dev/null
+++ b/include/tinyalsa/interval.h
@@ -0,0 +1,53 @@
+/* interval.h
+**
+** Copyright 2011, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of The Android Open Source Project nor the names of
+**       its contributors may be used to endorse or promote products derived
+**       from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
+** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+** DAMAGE.
+*/
+
+#ifndef TINYALSA_INTERVAL_H
+#define TINYALSA_INTERVAL_H
+
+#include <stdlib.h>
+
+/** A closed range signed interval. */
+
+struct tinyalsa_signed_interval {
+	/** The maximum value of the interval */
+	ssize_t max;
+	/** The minimum value of the interval */
+	ssize_t min;
+};
+
+/** A closed range unsigned interval. */
+
+struct tinyalsa_unsigned_interval {
+	/** The maximum value of the interval */
+	size_t max;
+	/** The minimum value of the interval */
+	size_t min;
+};
+
+#endif /* TINYALSA_INTERVAL_H */
+