AudioSystem: add APIs to control HAL stream latency mode

Add API to AudioSystem and AudioFlinger to discover and control
the latency modes supported by audio HAL streams

Bug: 218273231
Test: make
Merged-In: I84c2325301cc7a4cf058fa076d0645ede877b54f
Change-Id: I84c2325301cc7a4cf058fa076d0645ede877b54f
diff --git a/media/libaudioclient/AidlConversion.cpp b/media/libaudioclient/AidlConversion.cpp
index b0c9a0c..1521882 100644
--- a/media/libaudioclient/AidlConversion.cpp
+++ b/media/libaudioclient/AidlConversion.cpp
@@ -3388,4 +3388,24 @@
             enumToMask_index<int32_t, media::AudioDirectMode>);
 }
 
+ConversionResult<audio_latency_mode_t>
+aidl2legacy_LatencyMode_audio_latency_mode_t(media::LatencyMode aidl) {
+    switch (aidl) {
+        case media::LatencyMode::FREE:
+            return AUDIO_LATENCY_MODE_FREE;
+        case media::LatencyMode::LOW:
+            return AUDIO_LATENCY_MODE_LOW;
+    }
+    return unexpected(BAD_VALUE);
+}
+ConversionResult<media::LatencyMode>
+legacy2aidl_audio_latency_mode_t_LatencyMode(audio_latency_mode_t legacy) {
+    switch (legacy) {
+        case AUDIO_LATENCY_MODE_FREE:
+            return media::LatencyMode::FREE;
+        case AUDIO_LATENCY_MODE_LOW:
+            return media::LatencyMode::LOW;
+    }
+    return unexpected(BAD_VALUE);
+}
 }  // namespace android