call into hwcomposer HAL when present
Change-Id: I70f31c69a9436a43860e78977442863ecba6d27b
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
new file mode 100644
index 0000000..729f23b
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#ifndef ANDROID_SF_HWCOMPOSER_H
+#define ANDROID_SF_HWCOMPOSER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <EGL/egl.h>
+
+#include <hardware/hwcomposer.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class HWComposer
+{
+public:
+
+ HWComposer();
+ ~HWComposer();
+
+ status_t initCheck() const;
+
+ // tells the HAL what the framebuffer is
+ void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
+
+ // create a work list for numLayers layer
+ status_t createWorkList(size_t numLayers);
+
+ // Asks the HAL what it can do
+ status_t prepare() const;
+
+ // commits the list
+ status_t commit() const;
+
+
+ typedef hwc_layer_t const * const_iterator;
+ typedef hwc_layer_t* iterator;
+
+ iterator begin();
+ iterator end();
+
+private:
+ hw_module_t const* mModule;
+ hwc_composer_device_t* mHwc;
+ hwc_layer_list_t* mList;
+ hwc_display_t mDpy;
+ hwc_surface_t mSur;
+};
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SF_HWCOMPOSER_H