add unit tests for pcm_* functions
diff --git a/BUILD b/BUILD
new file mode 100644
index 0000000..dba4ab5
--- /dev/null
+++ b/BUILD
@@ -0,0 +1,57 @@
+# BUILD
+#
+# Copyright 2020, 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.
+#
+
+cc_library(
+ name = "tinyalsa",
+ srcs = glob(["src/*.c"]),
+ includes = ["include"],
+ hdrs = glob([
+ "include/**/*.h",
+ "src/*.h",
+ ]),
+ visibility = ["//visibility:public"],
+)
+
+cc_test(
+ name = "tinyalsa_tests",
+ srcs = glob([
+ "tests/src/*.cc",
+ "tests/include/*.h",
+ ]),
+ includes = ["tests/include"],
+ deps = [
+ "//:tinyalsa",
+ "@googletest//:gtest_main"
+ ],
+ linkopts = [
+ "-ldl",
+ ],
+ copts = [
+ "-std=c++17",
+ ],
+)