BtAudio: Improve LE offload compatability

Bug: 203490261
Test: m android.hardware.bluetooth.audio-V1-impl
Change-Id: I7dd37cb697b03bb5fe0bdc467f8e190575e0e2e1

1 files changed, 8 insertions, 34 deletions

diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
index 8052b01a40..f626db83bd 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
@@ -35,22 +35,8 @@ static constexpr int kFmqReceiveTimeoutMs =
 static constexpr int kWritePollMs = 1;  // polled non-blocking interval
 static constexpr int kReadPollMs = 1;   // polled non-blocking interval
 
-const CodecConfiguration BluetoothAudioSession::kInvalidCodecConfiguration = {};
-const LeAudioConfiguration kInvalidLeAudioConfiguration = {};
-AudioConfiguration BluetoothAudioSession::invalidSoftwareAudioConfiguration =
-    {};
-AudioConfiguration BluetoothAudioSession::invalidOffloadAudioConfiguration = {};
-AudioConfiguration BluetoothAudioSession::invalidLeOffloadAudioConfig = {};
-
 BluetoothAudioSession::BluetoothAudioSession(const SessionType& session_type)
-    : session_type_(session_type), stack_iface_(nullptr), data_mq_(nullptr) {
-  invalidSoftwareAudioConfiguration.set<AudioConfiguration::pcmConfig>(
-      kInvalidPcmConfiguration);
-  invalidOffloadAudioConfiguration.set<AudioConfiguration::a2dpConfig>(
-      kInvalidCodecConfiguration);
-  invalidLeOffloadAudioConfig.set<AudioConfiguration::leAudioConfig>(
-      kInvalidLeAudioConfiguration);
-}
+    : session_type_(session_type), stack_iface_(nullptr), data_mq_(nullptr) {}
 
 /***
  *
@@ -72,13 +58,7 @@ void BluetoothAudioSession::OnSessionStarted(
   } else if (!UpdateDataPath(mq_desc)) {
     LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
                << " MqDescriptor Invalid";
-    if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
-      audio_config_ = std::make_unique<AudioConfiguration>(
-          invalidOffloadAudioConfiguration);
-    } else {
-      audio_config_ = std::make_unique<AudioConfiguration>(
-          invalidSoftwareAudioConfiguration);
-    }
+    audio_config_ = nullptr;
   } else {
     stack_iface_ = stack_iface;
     LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
@@ -91,13 +71,7 @@ void BluetoothAudioSession::OnSessionEnded() {
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   bool toggled = IsSessionReady();
   LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
-  if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
-    audio_config_ =
-        std::make_unique<AudioConfiguration>(invalidOffloadAudioConfiguration);
-  } else {
-    audio_config_ =
-        std::make_unique<AudioConfiguration>(invalidSoftwareAudioConfiguration);
-  }
+  audio_config_ = nullptr;
   stack_iface_ = nullptr;
   UpdateDataPath(nullptr);
   if (toggled) {
@@ -111,17 +85,17 @@ void BluetoothAudioSession::OnSessionEnded() {
  *
  ***/
 
-const AudioConfiguration& BluetoothAudioSession::GetAudioConfig() {
+const AudioConfiguration BluetoothAudioSession::GetAudioConfig() {
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     switch (session_type_) {
       case SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
-        return invalidOffloadAudioConfiguration;
+        return AudioConfiguration(CodecConfiguration{});
       case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
       case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
-        return invalidLeOffloadAudioConfig;
+        return AudioConfiguration(LeAudioConfiguration{});
       default:
-        return invalidSoftwareAudioConfiguration;
+        return AudioConfiguration(PcmConfiguration{});
     }
   }
   return *audio_config_;
@@ -164,7 +138,7 @@ bool BluetoothAudioSession::IsSessionReady() {
        session_type_ ==
            SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH ||
        (data_mq_ != nullptr && data_mq_->isValid()));
-  return stack_iface_ != nullptr && is_mq_valid;
+  return stack_iface_ != nullptr && is_mq_valid && audio_config_ != nullptr;
 }
 
 /***