Broadcast API adjustment

* Enforce raw bytes vs. structured value consistency in metadata classes
* Enforce required parameters in builder
* Rename getMaximumNumberOfBroadcast to getMaximumNumberOfBroadcasts
* Added utility method to parse and serialize LTV array

Fixes: 218683032
Bug: 218683032
Test: atest BluetoothInstrumentationTests, cts tests
Tag: #feature
Change-Id: Ia10f414bdc958b75e94276d3f645687f8b9635f9

1 files changed, 9 insertions, 0 deletions

diff --git a/framework/java/android/bluetooth/BluetoothLeBroadcastMetadata.java b/framework/java/android/bluetooth/BluetoothLeBroadcastMetadata.java
index 1810818c98..2e748b9619 100644
--- a/framework/java/android/bluetooth/BluetoothLeBroadcastMetadata.java
+++ b/framework/java/android/bluetooth/BluetoothLeBroadcastMetadata.java
@@ -478,6 +478,15 @@ public final class BluetoothLeBroadcastMetadata implements Parcelable {
          */
         @SystemApi
         public @NonNull BluetoothLeBroadcastMetadata build() {
+            if (mSourceAddressType == BluetoothDevice.ADDRESS_TYPE_UNKNOWN) {
+                throw new IllegalArgumentException("SourceAddressTyp cannot be unknown");
+            }
+            if (mSourceDevice == null) {
+                throw new IllegalArgumentException("SourceDevice cannot be null");
+            }
+            if (mSubgroups.isEmpty()) {
+                throw new IllegalArgumentException("Must contain at least one subgroup");
+            }
             return new BluetoothLeBroadcastMetadata(mSourceAddressType, mSourceDevice,
                     mSourceAdvertisingSid, mBroadcastId, mPaSyncInterval, mIsEncrypted,
                     mBroadcastCode, mPresentationDelayMicros, mSubgroups);