Support setting preferred mixer attributes for USB devices.
This is part of USB audio improvement. With setting mixer attributes,
apps will be able to choose the best mixer attributes for their
playback. This can help improve latency and audio experience.
Bug: 239435816
Test: atest AudioManagerTest
Test: atest audiopolicy_tests
Test: Manually
Change-Id: Ifd1e8e35f94dab309eabe879d20ae0358038a4bf
diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index b87320e..48997db 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -155,7 +155,11 @@
BINDER_METHOD_ENTRY(getSpatializer) \
BINDER_METHOD_ENTRY(canBeSpatialized) \
BINDER_METHOD_ENTRY(getDirectPlaybackSupport) \
-BINDER_METHOD_ENTRY(getDirectProfilesForAttributes) \
+BINDER_METHOD_ENTRY(getDirectProfilesForAttributes) \
+BINDER_METHOD_ENTRY(getSupportedMixerAttributes) \
+BINDER_METHOD_ENTRY(setPreferredMixerAttributes) \
+BINDER_METHOD_ENTRY(getPreferredMixerAttributes) \
+BINDER_METHOD_ENTRY(clearPreferredMixerAttributes) \
// singleton for Binder Method Statistics for IAudioPolicyService
static auto& getIAudioPolicyServiceStatistics() {
@@ -1324,7 +1328,9 @@
case TRANSACTION_removeDevicesRoleForCapturePreset:
case TRANSACTION_clearDevicesRoleForCapturePreset:
case TRANSACTION_getDevicesForRoleAndCapturePreset:
- case TRANSACTION_getSpatializer: {
+ case TRANSACTION_getSpatializer:
+ case TRANSACTION_setPreferredMixerAttributes:
+ case TRANSACTION_clearPreferredMixerAttributes: {
if (!isServiceUid(IPCThreadState::self()->getCallingUid())) {
ALOGW("%s: transaction %d received from PID %d unauthorized UID %d",
__func__, code, IPCThreadState::self()->getCallingPid(),