audio flinger: Bluetooth latency mode control

Add APIs to discover support and control the use
of latency mode control over Bluetooth link.

Bug: 257922898
Test: make

Merged-In: I8d23a40f21465d566f0adc553cfc77e64571395e
Change-Id: I8d23a40f21465d566f0adc553cfc77e64571395e
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 7b9b44a..19ff97c 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -299,6 +299,10 @@
     virtual status_t getSupportedLatencyModes(audio_io_handle_t output,
             std::vector<audio_latency_mode_t>* modes);
 
+    virtual status_t setBluetoothLatencyModesEnabled(bool enabled);
+
+    virtual status_t supportsBluetoothLatencyModes(bool* support);
+
     status_t onTransactWrapper(TransactionCode code, const Parcel& data, uint32_t flags,
         const std::function<status_t()>& delegate) override;
 
@@ -1031,6 +1035,9 @@
              std::vector<media::audio::common::AudioMMapPolicyInfo>> mPolicyInfos;
     int32_t mAAudioBurstsPerBuffer = 0;
     int32_t mAAudioHwBurstMinMicros = 0;
+
+    // Bluetooth Variable latency control logic is enabled or disabled
+    std::atomic_bool mBluetoothLatencyModesEnabled;
 };
 
 #undef INCLUDING_FROM_AUDIOFLINGER_H