diff --git a/audio/aidl/common/tests/utils_tests.cpp b/audio/aidl/common/tests/utils_tests.cpp
new file mode 100644
index 0000000..d7f1a5d
--- /dev/null
+++ b/audio/aidl/common/tests/utils_tests.cpp
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include <Utils.h>
+
+#include <gtest/gtest.h>
+#define LOG_TAG "Utils_Test"
+#include <log/log.h>
+
+using aidl::android::media::audio::common::AudioChannelLayout;
+using aidl::android::media::audio::common::AudioFormatDescription;
+using aidl::android::media::audio::common::AudioFormatType;
+using aidl::android::media::audio::common::PcmType;
+using android::hardware::audio::common::getChannelCount;
+using android::hardware::audio::common::getFrameSizeInBytes;
+using android::hardware::audio::common::getPcmSampleSizeInBytes;
+
+TEST(UtilsTest, ChannelCountOddCases) {
+    using Tag = AudioChannelLayout::Tag;
+    EXPECT_EQ(0UL, getChannelCount(AudioChannelLayout{}));
+    EXPECT_EQ(0UL, getChannelCount(AudioChannelLayout::make<Tag::invalid>(0)));
+    EXPECT_EQ(0UL, getChannelCount(AudioChannelLayout::make<Tag::invalid>(-1)));
+}
+
+TEST(UtilsTest, ChannelCountForIndexMask) {
+    using Tag = AudioChannelLayout::Tag;
+    EXPECT_EQ(0UL, getChannelCount(AudioChannelLayout::make<Tag::indexMask>(0)));
+#define VERIFY_INDEX_MASK(N)                                                                  \
+    {                                                                                         \
+        const auto l =                                                                        \
+                AudioChannelLayout::make<Tag::indexMask>(AudioChannelLayout::INDEX_MASK_##N); \
+        EXPECT_EQ(N##UL, getChannelCount(l)) << l.toString();                                 \
+    }
+    VERIFY_INDEX_MASK(1);
+    VERIFY_INDEX_MASK(2);
+    VERIFY_INDEX_MASK(3);
+    VERIFY_INDEX_MASK(4);
+    VERIFY_INDEX_MASK(5);
+    VERIFY_INDEX_MASK(6);
+    VERIFY_INDEX_MASK(7);
+    VERIFY_INDEX_MASK(8);
+    VERIFY_INDEX_MASK(9);
+    VERIFY_INDEX_MASK(10);
+    VERIFY_INDEX_MASK(11);
+    VERIFY_INDEX_MASK(12);
+    VERIFY_INDEX_MASK(13);
+    VERIFY_INDEX_MASK(14);
+    VERIFY_INDEX_MASK(15);
+    VERIFY_INDEX_MASK(16);
+    VERIFY_INDEX_MASK(17);
+    VERIFY_INDEX_MASK(18);
+    VERIFY_INDEX_MASK(19);
+    VERIFY_INDEX_MASK(20);
+    VERIFY_INDEX_MASK(21);
+    VERIFY_INDEX_MASK(22);
+    VERIFY_INDEX_MASK(23);
+    VERIFY_INDEX_MASK(24);
+#undef VERIFY_INDEX_MASK
+}
+
+TEST(UtilsTest, ChannelCountForLayoutMask) {
+    using Tag = AudioChannelLayout::Tag;
+    const std::vector<std::pair<size_t, int32_t>> kTestLayouts = {
+            std::make_pair(0UL, 0),
+            std::make_pair(1UL, AudioChannelLayout::LAYOUT_MONO),
+            std::make_pair(2UL, AudioChannelLayout::LAYOUT_STEREO),
+            std::make_pair(6UL, AudioChannelLayout::LAYOUT_5POINT1),
+            std::make_pair(8UL, AudioChannelLayout::LAYOUT_7POINT1),
+            std::make_pair(16UL, AudioChannelLayout::LAYOUT_9POINT1POINT6),
+            std::make_pair(13UL, AudioChannelLayout::LAYOUT_13POINT_360RA),
+            std::make_pair(24UL, AudioChannelLayout::LAYOUT_22POINT2),
+            std::make_pair(3UL, AudioChannelLayout::LAYOUT_STEREO_HAPTIC_A),
+            std::make_pair(4UL, AudioChannelLayout::LAYOUT_STEREO_HAPTIC_AB)};
+    for (const auto& [expected_count, layout] : kTestLayouts) {
+        const auto l = AudioChannelLayout::make<Tag::layoutMask>(layout);
+        EXPECT_EQ(expected_count, getChannelCount(l)) << l.toString();
+    }
+}
+
+TEST(UtilsTest, ChannelCountForVoiceMask) {
+    using Tag = AudioChannelLayout::Tag;
+    // clang-format off
+    const std::vector<std::pair<size_t, int32_t>> kTestLayouts = {
+            std::make_pair(0UL, 0),
+            std::make_pair(1UL, AudioChannelLayout::VOICE_UPLINK_MONO),
+            std::make_pair(1UL, AudioChannelLayout::VOICE_DNLINK_MONO),
+            std::make_pair(2UL, AudioChannelLayout::VOICE_CALL_MONO)};
+    // clang-format on
+    for (const auto& [expected_count, layout] : kTestLayouts) {
+        const auto l = AudioChannelLayout::make<Tag::voiceMask>(layout);
+        EXPECT_EQ(expected_count, getChannelCount(l)) << l.toString();
+    }
+}
+
+namespace {
+
+AudioChannelLayout make_AudioChannelLayout_Mono() {
+    return AudioChannelLayout::make<AudioChannelLayout::Tag::layoutMask>(
+            AudioChannelLayout::LAYOUT_MONO);
+}
+
+AudioChannelLayout make_AudioChannelLayout_Stereo() {
+    return AudioChannelLayout::make<AudioChannelLayout::Tag::layoutMask>(
+            AudioChannelLayout::LAYOUT_STEREO);
+}
+
+AudioFormatDescription make_AudioFormatDescription(AudioFormatType type) {
+    AudioFormatDescription result;
+    result.type = type;
+    return result;
+}
+
+AudioFormatDescription make_AudioFormatDescription(PcmType pcm) {
+    auto result = make_AudioFormatDescription(AudioFormatType::PCM);
+    result.pcm = pcm;
+    return result;
+}
+
+AudioFormatDescription make_AudioFormatDescription(const std::string& encoding) {
+    AudioFormatDescription result;
+    result.encoding = encoding;
+    return result;
+}
+
+AudioFormatDescription make_AudioFormatDescription(PcmType transport, const std::string& encoding) {
+    auto result = make_AudioFormatDescription(encoding);
+    result.pcm = transport;
+    return result;
+}
+
+}  // namespace
+
+TEST(UtilsTest, FrameSize) {
+    EXPECT_EQ(0UL, getFrameSizeInBytes(AudioFormatDescription{}, AudioChannelLayout{}));
+    EXPECT_EQ(sizeof(int16_t), getFrameSizeInBytes(make_AudioFormatDescription(PcmType::INT_16_BIT),
+                                                   make_AudioChannelLayout_Mono()));
+    EXPECT_EQ(2 * sizeof(int16_t),
+              getFrameSizeInBytes(make_AudioFormatDescription(PcmType::INT_16_BIT),
+                                  make_AudioChannelLayout_Stereo()));
+    EXPECT_EQ(sizeof(int32_t), getFrameSizeInBytes(make_AudioFormatDescription(PcmType::INT_32_BIT),
+                                                   make_AudioChannelLayout_Mono()));
+    EXPECT_EQ(2 * sizeof(int32_t),
+              getFrameSizeInBytes(make_AudioFormatDescription(PcmType::INT_32_BIT),
+                                  make_AudioChannelLayout_Stereo()));
+    EXPECT_EQ(sizeof(float), getFrameSizeInBytes(make_AudioFormatDescription(PcmType::FLOAT_32_BIT),
+                                                 make_AudioChannelLayout_Mono()));
+    EXPECT_EQ(2 * sizeof(float),
+              getFrameSizeInBytes(make_AudioFormatDescription(PcmType::FLOAT_32_BIT),
+                                  make_AudioChannelLayout_Stereo()));
+    EXPECT_EQ(sizeof(uint8_t),
+              getFrameSizeInBytes(make_AudioFormatDescription("bitstream"), AudioChannelLayout{}));
+    EXPECT_EQ(sizeof(int16_t),
+              getFrameSizeInBytes(make_AudioFormatDescription(PcmType::INT_16_BIT, "encapsulated"),
+                                  AudioChannelLayout{}));
+}
+
+TEST(UtilsTest, PcmSampleSize) {
+    EXPECT_EQ(1UL, getPcmSampleSizeInBytes(PcmType{}));
+    EXPECT_EQ(sizeof(uint8_t), getPcmSampleSizeInBytes(PcmType::UINT_8_BIT));
+    EXPECT_EQ(sizeof(int16_t), getPcmSampleSizeInBytes(PcmType::INT_16_BIT));
+    EXPECT_EQ(sizeof(int32_t), getPcmSampleSizeInBytes(PcmType::INT_32_BIT));
+    EXPECT_EQ(sizeof(int32_t), getPcmSampleSizeInBytes(PcmType::FIXED_Q_8_24));
+    EXPECT_EQ(sizeof(float), getPcmSampleSizeInBytes(PcmType::FLOAT_32_BIT));
+    EXPECT_EQ(3UL, getPcmSampleSizeInBytes(PcmType::INT_24_BIT));
+    EXPECT_EQ(0UL, getPcmSampleSizeInBytes(PcmType(-1)));
+    using PcmTypeUnderlyingType = std::underlying_type_t<PcmType>;
+    EXPECT_EQ(0UL,
+              getPcmSampleSizeInBytes(PcmType(std::numeric_limits<PcmTypeUnderlyingType>::min())));
+    EXPECT_EQ(0UL,
+              getPcmSampleSizeInBytes(PcmType(std::numeric_limits<PcmTypeUnderlyingType>::max())));
+}