Audio hal VTS: pretty print AudioDevice and ChannelMask

This eases the debuging of failing tests.
Also print hex value of the enums as well of their literal values.

Test: run the test on target
Bug: 34170075
Change-Id: Iea1d7d2269e0e5b413240aaa905daae755846e74
Signed-off-by: Kevin Rocard <krocard@google.com>

audio/2.0/vts/functional/utility/PrettyPrintAudioTypes.h

@@ -13,23 +13,50 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include <type_traits>
+
+/** @file Use HIDL generated toString methods to pretty print gtest errors */
+
+namespace detail {
+
+// Print the value of an enum as hex
+template <class Enum>
+inline void printUnderlyingValue(Enum value, ::std::ostream* os) {
+    *os << std::hex << " (0x" << static_cast<std::underlying_type_t<Enum>>(value) << ")";
+}
+
+} // namespace detail
 
-// Use HIDL generated toString methods to pretty print gtest errors
 namespace android {
 namespace hardware {
 namespace audio {
 namespace V2_0 {
+
 inline void PrintTo(const Result& result, ::std::ostream* os) {
     *os << toString(result);
+    detail::printUnderlyingValue(result, os);
 }
+
 } // namespace V2_0
 namespace common {
 namespace V2_0 {
+
 inline void PrintTo(const AudioConfig& config, ::std::ostream* os) {
     *os << toString(config);
 }
+
+inline void PrintTo(const AudioDevice& device, ::std::ostream* os) {
+    *os << toString(device);
+    detail::printUnderlyingValue(device, os);
+}
+
+inline void PrintTo(const AudioChannelMask& channelMask, ::std::ostream* os) {
+    *os << toString(channelMask);
+    detail::printUnderlyingValue(channelMask, os);
+}
+
 } // namespace V2_0
 } // namespace common
-}
-}
-}
+} // namespace audio
+} // namespace hardware
+} // namespace android