Convert mask types from uint32_t to enum type

This applies to the following types:

- audio_gain_mode_t;
- audio_flags_mask_t;
- audio_channel_representation_t;
- audio_channel_mask_t;
- audio_devices_t.

Enum types are distinct thus proper overloading on the type
is possible in C++. Also, assignments to enum types are
less prone to errors.

Bug: 169889714
Test: basic audio functionality
      m stagefright
      atest audiopolicy_tests
Change-Id: I42506484b1d0b0482618b7314fad4c8012a06fb4
diff --git a/media/libaudiofoundation/AudioDeviceTypeAddr.cpp b/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
index d8fce38..a47337b 100644
--- a/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
+++ b/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
@@ -106,7 +106,9 @@
 
 status_t AudioDeviceTypeAddr::readFromParcel(const Parcel *parcel) {
     status_t status;
-    if ((status = parcel->readUint32(&mType)) != NO_ERROR) return status;
+    uint32_t rawDeviceType;
+    if ((status = parcel->readUint32(&rawDeviceType)) != NO_ERROR) return status;
+    mType = static_cast<audio_devices_t>(rawDeviceType);
     status = parcel->readUtf8FromUtf16(&mAddress);
     return status;
 }
@@ -153,4 +155,4 @@
     return stream.str();
 }
 
-} // namespace android
\ No newline at end of file
+} // namespace android
diff --git a/media/libaudiofoundation/AudioGain.cpp b/media/libaudiofoundation/AudioGain.cpp
index 0d28335..759140e 100644
--- a/media/libaudiofoundation/AudioGain.cpp
+++ b/media/libaudiofoundation/AudioGain.cpp
@@ -152,8 +152,12 @@
     if ((status = parcel->readInt32(&mIndex)) != NO_ERROR) return status;
     if ((status = parcel->readBool(&mUseInChannelMask)) != NO_ERROR) return status;
     if ((status = parcel->readBool(&mUseForVolume)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.mode)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.channel_mask)) != NO_ERROR) return status;
+    uint32_t rawGainMode;
+    if ((status = parcel->readUint32(&rawGainMode)) != NO_ERROR) return status;
+    mGain.mode = static_cast<audio_gain_mode_t>(rawGainMode);
+    uint32_t rawChannelMask;
+    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
+    mGain.channel_mask = static_cast<audio_channel_mask_t>(rawChannelMask);
     if ((status = parcel->readInt32(&mGain.min_value)) != NO_ERROR) return status;
     if ((status = parcel->readInt32(&mGain.max_value)) != NO_ERROR) return status;
     if ((status = parcel->readInt32(&mGain.default_value)) != NO_ERROR) return status;
diff --git a/media/libaudiofoundation/AudioPort.cpp b/media/libaudiofoundation/AudioPort.cpp
index f988690..1846a6b 100644
--- a/media/libaudiofoundation/AudioPort.cpp
+++ b/media/libaudiofoundation/AudioPort.cpp
@@ -268,12 +268,17 @@
     if ((status = parcel->readUint32(reinterpret_cast<uint32_t*>(&mFormat))) != NO_ERROR) {
         return status;
     }
-    if ((status = parcel->readUint32(&mChannelMask)) != NO_ERROR) return status;
+    uint32_t rawChannelMask;
+    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
+    mChannelMask = static_cast<audio_channel_mask_t>(rawChannelMask);
     if ((status = parcel->readInt32(&mId)) != NO_ERROR) return status;
     // Read mGain from parcel.
     if ((status = parcel->readInt32(&mGain.index)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.mode)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.channel_mask)) != NO_ERROR) return status;
+    uint32_t rawGainMode;
+    if ((status = parcel->readUint32(&rawGainMode)) != NO_ERROR) return status;
+    mGain.mode = static_cast<audio_gain_mode_t>(rawGainMode);
+    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
+    mGain.channel_mask = static_cast<audio_channel_mask_t>(rawChannelMask);
     if ((status = parcel->readUint32(&mGain.ramp_duration_ms)) != NO_ERROR) return status;
     std::vector<int> values;
     if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
diff --git a/media/libaudiofoundation/AudioProfile.cpp b/media/libaudiofoundation/AudioProfile.cpp
index 91be346..67b600e 100644
--- a/media/libaudiofoundation/AudioProfile.cpp
+++ b/media/libaudiofoundation/AudioProfile.cpp
@@ -157,7 +157,9 @@
     std::vector<int> values;
     if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
     mChannelMasks.clear();
-    mChannelMasks.insert(values.begin(), values.end());
+    for (auto raw : values) {
+        mChannelMasks.insert(static_cast<audio_channel_mask_t>(raw));
+    }
     values.clear();
     if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
     mSamplingRates.clear();
diff --git a/media/libaudiofoundation/include/media/AudioContainers.h b/media/libaudiofoundation/include/media/AudioContainers.h
index 72fda49..aa7ca69 100644
--- a/media/libaudiofoundation/include/media/AudioContainers.h
+++ b/media/libaudiofoundation/include/media/AudioContainers.h
@@ -96,7 +96,7 @@
 static inline audio_devices_t deviceTypesToBitMask(const DeviceTypeSet& deviceTypes) {
     audio_devices_t types = AUDIO_DEVICE_NONE;
     for (auto deviceType : deviceTypes) {
-        types |= deviceType;
+        types = static_cast<audio_devices_t>(types | deviceType);
     }
     return types;
 }
@@ -131,4 +131,4 @@
 std::string toString(const DeviceTypeSet& deviceTypes);
 
 
-} // namespace android
\ No newline at end of file
+} // namespace android