Initial Contribution
diff --git a/libs/ui/ISurfaceFlingerClient.cpp b/libs/ui/ISurfaceFlingerClient.cpp
new file mode 100644
index 0000000..9444af7
--- /dev/null
+++ b/libs/ui/ISurfaceFlingerClient.cpp
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// tag as surfaceflinger
+#define LOG_TAG "SurfaceFlinger"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Parcel.h>
+#include <utils/IMemory.h>
+#include <utils/IPCThreadState.h>
+#include <utils/IServiceManager.h>
+
+#include <ui/ISurface.h>
+#include <ui/ISurfaceFlingerClient.h>
+#include <ui/Point.h>
+#include <ui/Rect.h>
+
+#include <private/ui/LayerState.h>
+
+// ---------------------------------------------------------------------------
+
+#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
+#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+
+enum {
+ GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
+ CREATE_SURFACE,
+ DESTROY_SURFACE,
+ SET_STATE
+};
+
+class BpSurfaceFlingerClient : public BpInterface<ISurfaceFlingerClient>
+{
+public:
+ BpSurfaceFlingerClient(const sp<IBinder>& impl)
+ : BpInterface<ISurfaceFlingerClient>(impl)
+ {
+ }
+
+ virtual void getControlBlocks(sp<IMemory>* ctl) const
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceFlingerClient::getInterfaceDescriptor());
+ remote()->transact(GET_CBLK, data, &reply);
+ *ctl = interface_cast<IMemory>(reply.readStrongBinder());
+ }
+
+ virtual sp<ISurface> createSurface( surface_data_t* params,
+ int pid,
+ DisplayID display,
+ uint32_t w,
+ uint32_t h,
+ PixelFormat format,
+ uint32_t flags)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceFlingerClient::getInterfaceDescriptor());
+ data.writeInt32(pid);
+ data.writeInt32(display);
+ data.writeInt32(w);
+ data.writeInt32(h);
+ data.writeInt32(format);
+ data.writeInt32(flags);
+ remote()->transact(CREATE_SURFACE, data, &reply);
+ params->readFromParcel(data);
+ return interface_cast<ISurface>(reply.readStrongBinder());
+ }
+
+ virtual status_t destroySurface(SurfaceID sid)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceFlingerClient::getInterfaceDescriptor());
+ data.writeInt32(sid);
+ remote()->transact(DESTROY_SURFACE, data, &reply);
+ return reply.readInt32();
+ }
+
+ virtual status_t setState(int32_t count, const layer_state_t* states)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceFlingerClient::getInterfaceDescriptor());
+ data.writeInt32(count);
+ for (int i=0 ; i<count ; i++)
+ states[i].write(data);
+ remote()->transact(SET_STATE, data, &reply);
+ return reply.readInt32();
+ }
+};
+
+IMPLEMENT_META_INTERFACE(SurfaceFlingerClient, "android.ui.ISurfaceFlingerClient");
+
+// ----------------------------------------------------------------------
+
+#define CHECK_INTERFACE(interface, data, reply) \
+ do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
+ LOGW("Call incorrectly routed to " #interface); \
+ return PERMISSION_DENIED; \
+ } } while (0)
+
+status_t BnSurfaceFlingerClient::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ // codes that don't require permission check
+
+ switch(code) {
+ case GET_CBLK: {
+ CHECK_INTERFACE(ISurfaceFlingerClient, data, reply);
+ sp<IMemory> ctl;
+ getControlBlocks(&ctl);
+ reply->writeStrongBinder(ctl->asBinder());
+ return NO_ERROR;
+ } break;
+ }
+
+ // these must be checked
+
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int self_pid = getpid();
+ if (UNLIKELY(pid != self_pid)) {
+ // we're called from a different process, do the real check
+ if (!checkCallingPermission(
+ String16("android.permission.ACCESS_SURFACE_FLINGER")))
+ {
+ const int uid = ipc->getCallingUid();
+ LOGE("Permission Denial: "
+ "can't openGlobalTransaction pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ }
+
+ switch(code) {
+ case CREATE_SURFACE: {
+ CHECK_INTERFACE(ISurfaceFlingerClient, data, reply);
+ surface_data_t params;
+ int32_t pid = data.readInt32();
+ DisplayID display = data.readInt32();
+ uint32_t w = data.readInt32();
+ uint32_t h = data.readInt32();
+ PixelFormat format = data.readInt32();
+ uint32_t flags = data.readInt32();
+ sp<ISurface> s = createSurface(¶ms, pid, display, w, h, format, flags);
+ params.writeToParcel(reply);
+ reply->writeStrongBinder(s->asBinder());
+ return NO_ERROR;
+ } break;
+ case DESTROY_SURFACE: {
+ CHECK_INTERFACE(ISurfaceFlingerClient, data, reply);
+ reply->writeInt32( destroySurface( data.readInt32() ) );
+ return NO_ERROR;
+ } break;
+ case SET_STATE: {
+ CHECK_INTERFACE(ISurfaceFlingerClient, data, reply);
+ int32_t count = data.readInt32();
+ layer_state_t* states = new layer_state_t[count];
+ for (int i=0 ; i<count ; i++)
+ states[i].read(data);
+ status_t err = setState(count, states);
+ delete [] states;
+ reply->writeInt32(err);
+ return NO_ERROR;
+ } break;
+ default:
+ return BBinder::onTransact(code, data, reply, flags);
+ }
+}
+
+// ----------------------------------------------------------------------
+
+status_t ISurfaceFlingerClient::surface_data_t::readFromParcel(const Parcel& parcel)
+{
+ token = parcel.readInt32();
+ identity = parcel.readInt32();
+ type = parcel.readInt32();
+ heap[0] = interface_cast<IMemoryHeap>(parcel.readStrongBinder());
+ heap[1] = interface_cast<IMemoryHeap>(parcel.readStrongBinder());
+ return NO_ERROR;
+}
+
+status_t ISurfaceFlingerClient::surface_data_t::writeToParcel(Parcel* parcel) const
+{
+ parcel->writeInt32(token);
+ parcel->writeInt32(identity);
+ parcel->writeInt32(type);
+ parcel->writeStrongBinder(heap[0]!=0 ? heap[0]->asBinder() : NULL);
+ parcel->writeStrongBinder(heap[1]!=0 ? heap[1]->asBinder() : NULL);
+ return NO_ERROR;
+}
+
+}; // namespace android