reduce number of binder calls from mediaserver
Reduce the number of audio port, audio patch and
IO config changed binder calls from mediaserver to
client processes:
- Do not call IO config changed callback if selected
device is the same as previously selected one on a given
audio flinger playback or capture thread.
- Do not call the audio port or audo patch list update
callback on a client if this client as no listener registered.
Bug: 22045560.
Change-Id: If780e105404de79b7cb5c80c27b793ceb6b1c423
diff --git a/media/libmedia/IAudioPolicyService.cpp b/media/libmedia/IAudioPolicyService.cpp
index fd18f17..3348441 100644
--- a/media/libmedia/IAudioPolicyService.cpp
+++ b/media/libmedia/IAudioPolicyService.cpp
@@ -72,7 +72,8 @@
GET_PHONE_STATE,
REGISTER_POLICY_MIXES,
START_AUDIO_SOURCE,
- STOP_AUDIO_SOURCE
+ STOP_AUDIO_SOURCE,
+ SET_AUDIO_PORT_CALLBACK_ENABLED,
};
#define MAX_ITEMS_PER_LIST 1024
@@ -646,6 +647,14 @@
remote()->transact(REGISTER_CLIENT, data, &reply);
}
+ virtual void setAudioPortCallbacksEnabled(bool enabled)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+ data.writeInt32(enabled ? 1 : 0);
+ remote()->transact(SET_AUDIO_PORT_CALLBACK_ENABLED, data, &reply);
+ }
+
virtual status_t acquireSoundTriggerSession(audio_session_t *session,
audio_io_handle_t *ioHandle,
audio_devices_t *device)
@@ -1219,6 +1228,12 @@
return NO_ERROR;
} break;
+ case SET_AUDIO_PORT_CALLBACK_ENABLED: {
+ CHECK_INTERFACE(IAudioPolicyService, data, reply);
+ setAudioPortCallbacksEnabled(data.readInt32() == 1);
+ return NO_ERROR;
+ } break;
+
case ACQUIRE_SOUNDTRIGGER_SESSION: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
sp<IAudioPolicyServiceClient> client = interface_cast<IAudioPolicyServiceClient>(