stagefright: move math templates into AUtils.h

add unit test for math templates

Bug: 17676461
Change-Id: Ie964c5fcfcca1ec53b4538f8e577392e8fbb4319

2 files changed, 141 insertions, 5 deletions

diff --git a/media/libstagefright/tests/Android.mk b/media/libstagefright/tests/Android.mk
index 903af49..99b480ad 100644
--- a/media/libstagefright/tests/Android.mk
+++ b/media/libstagefright/tests/Android.mk
@@ -9,7 +9,7 @@ LOCAL_MODULE := SurfaceMediaSource_test
 LOCAL_MODULE_TAGS := tests
 
 LOCAL_SRC_FILES := \
-    SurfaceMediaSource_test.cpp \
+	SurfaceMediaSource_test.cpp \
 	DummyRecorder.cpp \
 
 LOCAL_SHARED_LIBRARIES := \
@@ -33,10 +33,10 @@ LOCAL_STATIC_LIBRARIES := \
 	libgtest_main \
 
 LOCAL_C_INCLUDES := \
-    bionic \
-    bionic/libstdc++/include \
-    external/gtest/include \
-    external/stlport/stlport \
+	bionic \
+	bionic/libstdc++/include \
+	external/gtest/include \
+	external/stlport/stlport \
 	frameworks/av/media/libstagefright \
 	frameworks/av/media/libstagefright/include \
 	$(TOP)/frameworks/native/include/media/openmax \
@@ -47,6 +47,41 @@ include $(BUILD_EXECUTABLE)
 
 endif
 
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := Utils_test
+
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_SRC_FILES := \
+	Utils_test.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+	libcutils \
+	liblog \
+	libmedia \
+	libstagefright \
+	libstagefright_foundation \
+	libstagefright_omx \
+	libstlport \
+
+LOCAL_STATIC_LIBRARIES := \
+	libgtest \
+	libgtest_main \
+
+LOCAL_C_INCLUDES := \
+	bionic \
+	bionic/libstdc++/include \
+	external/gtest/include \
+	external/stlport/stlport \
+	frameworks/av/include \
+	frameworks/av/media/libstagefright \
+	frameworks/av/media/libstagefright/include \
+	$(TOP)/frameworks/native/include/media/openmax \
+
+include $(BUILD_EXECUTABLE)
+
 # Include subdirectory makefiles
 # ============================================================
 
diff --git a/media/libstagefright/tests/Utils_test.cpp b/media/libstagefright/tests/Utils_test.cpp
new file mode 100644
index 0000000..f2825dd
--- /dev/null
+++ b/media/libstagefright/tests/Utils_test.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "Utils_test"
+
+#include <gtest/gtest.h>
+#include <utils/String8.h>
+#include <utils/Errors.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AUtils.h>
+#include <media/stagefright/Utils.h>
+
+namespace android {
+
+class UtilsTest : public ::testing::Test {
+};
+
+TEST_F(UtilsTest, TestFourCC) {
+    ASSERT_EQ(FOURCC('s', 't', 'm' , 'u'), 'stmu');
+}
+
+TEST_F(UtilsTest, TestMathTemplates) {
+    ASSERT_EQ(divRound(-10, -4), 3);
+    ASSERT_EQ(divRound(-11, -4), 3);
+    ASSERT_EQ(divRound(-12, -4), 3);
+    ASSERT_EQ(divRound(-13, -4), 3);
+    ASSERT_EQ(divRound(-14, -4), 4);
+
+    ASSERT_EQ(divRound(10, -4), -3);
+    ASSERT_EQ(divRound(11, -4), -3);
+    ASSERT_EQ(divRound(12, -4), -3);
+    ASSERT_EQ(divRound(13, -4), -3);
+    ASSERT_EQ(divRound(14, -4), -4);
+
+    ASSERT_EQ(divRound(-10, 4), -3);
+    ASSERT_EQ(divRound(-11, 4), -3);
+    ASSERT_EQ(divRound(-12, 4), -3);
+    ASSERT_EQ(divRound(-13, 4), -3);
+    ASSERT_EQ(divRound(-14, 4), -4);
+
+    ASSERT_EQ(divRound(10, 4), 3);
+    ASSERT_EQ(divRound(11, 4), 3);
+    ASSERT_EQ(divRound(12, 4), 3);
+    ASSERT_EQ(divRound(13, 4), 3);
+    ASSERT_EQ(divRound(14, 4), 4);
+
+    ASSERT_EQ(divUp(-11, -4), 3);
+    ASSERT_EQ(divUp(-12, -4), 3);
+    ASSERT_EQ(divUp(-13, -4), 4);
+
+    ASSERT_EQ(divUp(11, -4), -2);
+    ASSERT_EQ(divUp(12, -4), -3);
+    ASSERT_EQ(divUp(13, -4), -3);
+
+    ASSERT_EQ(divUp(-11, 4), -2);
+    ASSERT_EQ(divUp(-12, 4), -3);
+    ASSERT_EQ(divUp(-13, 4), -3);
+
+    ASSERT_EQ(divUp(11, 4), 3);
+    ASSERT_EQ(divUp(12, 4), 3);
+    ASSERT_EQ(divUp(13, 4), 4);
+
+    ASSERT_EQ(abs(5L), 5L);
+    ASSERT_EQ(abs(-25), 25);
+
+    ASSERT_EQ(min(5.6f, 6.0f), 5.6f);
+    ASSERT_EQ(min(6.0f, 5.6f), 5.6f);
+    ASSERT_EQ(min(-4.3, 8.6), -4.3);
+    ASSERT_EQ(min(8.6, -4.3), -4.3);
+
+    ASSERT_EQ(max(5.6f, 6.0f), 6.0f);
+    ASSERT_EQ(max(6.0f, 5.6f), 6.0f);
+    ASSERT_EQ(max(-4.3, 8.6), 8.6);
+    ASSERT_EQ(max(8.6, -4.3), 8.6);
+
+    ASSERT_EQ(periodicError(124, 100), 24);
+    ASSERT_EQ(periodicError(288, 100), 12);
+    ASSERT_EQ(periodicError(-345, 100), 45);
+    ASSERT_EQ(periodicError(-493, 100), 7);
+    ASSERT_EQ(periodicError(-550, 100), 50);
+    ASSERT_EQ(periodicError(-600, 100), 0);
+}
+
+} // namespace android