commit 7c48034d32131322ac986c4cfcfd1f85c398c4a2
author Limon Mia <limonmia@google.com> Mon Nov 20 03:59:49 2023 +0000
committer Limon Mia <limonmia@google.com> Mon Nov 20 07:56:19 2023 +0000
tree 8f3fb211b345ae2c6ae6484ca613dccc2167ed6a
parent 17017a2aa447475253a435e808bd83abb21eb585

BTAudio HAL: implement changes for DSA Over LEA

Test: atest VtsHalBluetoothAudioTargetTest
Bug: 270987427
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f6a9577ac7585a5c284896736ba3508f7ed7528a)
Merged-In: I341e3af726da7870e23f5bb0943066ebcdd34e35
Change-Id: I341e3af726da7870e23f5bb0943066ebcdd34e35

bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp

diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
index 0bcafa3..e5cf53c 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
@@ -588,15 +588,32 @@
                << " has NO session";
     return std::vector<LatencyMode>();
   }
-  if (low_latency_allowed_) return latency_modes_;
-  std::vector<LatencyMode> modes;
-  for (LatencyMode mode : latency_modes_) {
-    if (mode == LatencyMode::LOW_LATENCY)
-      // ignore those low latency mode if Bluetooth stack doesn't allow
-      continue;
-    modes.push_back(mode);
+
+  std::vector<LatencyMode> supported_latency_modes;
+  if (session_type_ ==
+      SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    for (LatencyMode mode : latency_modes_) {
+      if (mode == LatencyMode::LOW_LATENCY) {
+        // LOW_LATENCY is not supported for LE_HARDWARE_OFFLOAD_ENC sessions
+        continue;
+      }
+      supported_latency_modes.push_back(mode);
+    }
+  } else {
+    for (LatencyMode mode : latency_modes_) {
+      if (!low_latency_allowed_ && mode == LatencyMode::LOW_LATENCY) {
+        // ignore LOW_LATENCY mode if Bluetooth stack doesn't allow
+        continue;
+      }
+      if (mode == LatencyMode::DYNAMIC_SPATIAL_AUDIO_SOFTWARE ||
+          mode == LatencyMode::DYNAMIC_SPATIAL_AUDIO_HARDWARE) {
+        // DSA_SW and DSA_HW only supported for LE_HARDWARE_OFFLOAD_ENC sessions
+        continue;
+      }
+      supported_latency_modes.push_back(mode);
+    }
   }
-  return modes;
+  return supported_latency_modes;
 }
 
 void BluetoothAudioSession::SetLatencyMode(const LatencyMode& latency_mode) {