SurfaceFlinger: add setAllowedDisplayConfigs
Add an API to ISurfaceComposer to set allowed display configurations.
This API is expected to be called by DisplayManager depends on the
current policy in place. Once setAllowedDisplayConfigs is called,
SF can only set a new display config if it is part of the allowed
configurations list.
Test: call setAllowedDisplayConfigs() from backdoor and
observe config change.
Bug: 122905403
Change-Id: I1d0a3649bbe7a08efeb72dc270f0b2df330b021c
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index f77eeb2..09f1ed7 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -806,6 +806,32 @@
}
return error;
}
+
+ virtual status_t setAllowedDisplayConfigs(const sp<IBinder>& displayToken,
+ const std::vector<int32_t>& allowedConfigs) {
+ Parcel data, reply;
+ status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+ if (result != NO_ERROR) {
+ ALOGE("setAllowedDisplayConfigs failed to writeInterfaceToken: %d", result);
+ return result;
+ }
+ result = data.writeStrongBinder(displayToken);
+ if (result != NO_ERROR) {
+ ALOGE("setAllowedDisplayConfigs failed to writeStrongBinder: %d", result);
+ return result;
+ }
+ result = data.writeInt32Vector(allowedConfigs);
+ if (result != NO_ERROR) {
+ ALOGE("setAllowedDisplayConfigs failed to writeInt32Vector: %d", result);
+ return result;
+ }
+ result = remote()->transact(BnSurfaceComposer::SET_ALLOWED_DISPLAY_CONFIGS, data, &reply);
+ if (result != NO_ERROR) {
+ ALOGE("setAllowedDisplayConfigs failed to transact: %d", result);
+ return result;
+ }
+ return reply.readInt32();
+ }
};
// Out-of-line virtual method definition to trigger vtable emission in this
@@ -1317,6 +1343,15 @@
}
return removeRegionSamplingListener(listener);
}
+ case SET_ALLOWED_DISPLAY_CONFIGS: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp<IBinder> displayToken = data.readStrongBinder();
+ std::vector<int32_t> allowedConfigs;
+ data.readInt32Vector(&allowedConfigs);
+ status_t result = setAllowedDisplayConfigs(displayToken, allowedConfigs);
+ reply->writeInt32(result);
+ return result;
+ }
default: {
return BBinder::onTransact(code, data, reply, flags);
}