split-up Client.h out of SurfaceFlinger.h
Change-Id: I1993bf23e417163749d886283563a93d50b361b4
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
new file mode 100644
index 0000000..6af1943
--- /dev/null
+++ b/services/surfaceflinger/Client.cpp
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/PermissionCache.h>
+
+#include <private/android_filesystem_config.h>
+
+#include "Client.h"
+#include "LayerBase.h"
+#include "SurfaceFlinger.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
+
+// ---------------------------------------------------------------------------
+
+Client::Client(const sp<SurfaceFlinger>& flinger)
+ : mFlinger(flinger), mNameGenerator(1)
+{
+}
+
+Client::~Client()
+{
+ const size_t count = mLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
+ if (layer != 0) {
+ mFlinger->removeLayer(layer);
+ }
+ }
+}
+
+status_t Client::initCheck() const {
+ return NO_ERROR;
+}
+
+size_t Client::attachLayer(const sp<LayerBaseClient>& layer)
+{
+ Mutex::Autolock _l(mLock);
+ size_t name = mNameGenerator++;
+ mLayers.add(name, layer);
+ return name;
+}
+
+void Client::detachLayer(const LayerBaseClient* layer)
+{
+ Mutex::Autolock _l(mLock);
+ // we do a linear search here, because this doesn't happen often
+ const size_t count = mLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (mLayers.valueAt(i) == layer) {
+ mLayers.removeItemsAt(i, 1);
+ break;
+ }
+ }
+}
+sp<LayerBaseClient> Client::getLayerUser(int32_t i) const
+{
+ Mutex::Autolock _l(mLock);
+ sp<LayerBaseClient> lbc;
+ wp<LayerBaseClient> layer(mLayers.valueFor(i));
+ if (layer != 0) {
+ lbc = layer.promote();
+ ALOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
+ }
+ return lbc;
+}
+
+
+status_t Client::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ // these must be checked
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int uid = ipc->getCallingUid();
+ const int self_pid = getpid();
+ if (CC_UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) {
+ // we're called from a different process, do the real check
+ if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger))
+ {
+ ALOGE("Permission Denial: "
+ "can't openGlobalTransaction pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ }
+ return BnSurfaceComposerClient::onTransact(code, data, reply, flags);
+}
+
+
+sp<ISurface> Client::createSurface(
+ ISurfaceComposerClient::surface_data_t* params,
+ const String8& name,
+ DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t flags)
+{
+ /*
+ * createSurface must be called from the GL thread so that it can
+ * have access to the GL context.
+ */
+
+ class MessageCreateSurface : public MessageBase {
+ sp<ISurface> result;
+ SurfaceFlinger* flinger;
+ ISurfaceComposerClient::surface_data_t* params;
+ Client* client;
+ const String8& name;
+ DisplayID display;
+ uint32_t w, h;
+ PixelFormat format;
+ uint32_t flags;
+ public:
+ MessageCreateSurface(SurfaceFlinger* flinger,
+ ISurfaceComposerClient::surface_data_t* params,
+ const String8& name, Client* client,
+ DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t flags)
+ : flinger(flinger), params(params), client(client), name(name),
+ display(display), w(w), h(h), format(format), flags(flags)
+ {
+ }
+ sp<ISurface> getResult() const { return result; }
+ virtual bool handler() {
+ result = flinger->createSurface(params, name, client,
+ display, w, h, format, flags);
+ return true;
+ }
+ };
+
+ sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(),
+ params, name, this, display, w, h, format, flags);
+ mFlinger->postMessageSync(msg);
+ return static_cast<MessageCreateSurface*>( msg.get() )->getResult();
+}
+status_t Client::destroySurface(SurfaceID sid) {
+ return mFlinger->removeSurface(this, sid);
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android