display: Create QService binder interface.

Add QService binder interface to enable communication
to display by the mediaserver for Securing/Unsecuring start and end
notifications.

Create separate lib for external.
Clear reserved field before applying format.

Change-Id: I463c9c6deac7587bd0c4e0b84513b5d0b5dd7e98
diff --git a/libexternal/external.h b/libexternal/external.h
new file mode 100644
index 0000000..09cde3b
--- /dev/null
+++ b/libexternal/external.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * Copyright (C) 2012, The Linux Foundation. All rights reserved.
+ *
+ * Not a Contribution, Apache license notifications and license are
+ * retained for attribution purposes only.
+
+ * 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 HWC_EXTERNAL_DISPLAY_H
+#define HWC_EXTERNAL_DISPLAY_H
+
+#include <utils/threads.h>
+#include <linux/fb.h>
+
+struct hwc_context_t;
+
+namespace qhwc {
+
+class ExternalDisplay
+{
+    //Type of external display -  OFF, HDMI, WFD
+    enum external_display_type {
+        EXT_TYPE_NONE,
+        EXT_TYPE_HDMI,
+        EXT_TYPE_WIFI
+    };
+
+    // Mirroring state
+    enum external_mirroring_state {
+        EXT_MIRRORING_OFF,
+        EXT_MIRRORING_ON,
+    };
+public:
+    ExternalDisplay(hwc_context_t* ctx);
+    ~ExternalDisplay();
+    int getModeCount() const;
+    void getEDIDModes(int *out) const;
+    int getExternalDisplay() const;
+    void setExternalDisplay(int connected);
+    bool commit();
+    int enableHDMIVsync(int enable);
+    void setHPD(uint32_t startEnd);
+    void setEDIDMode(int resMode);
+    void setActionSafeDimension(int w, int h);
+
+private:
+    bool readResolution();
+    int parseResolution(char* edidStr, int* edidModes);
+    void setResolution(int ID);
+    bool openFramebuffer();
+    bool closeFrameBuffer();
+    bool writeHPDOption(int userOption) const;
+    bool isValidMode(int ID);
+    void handleUEvent(char* str, int len);
+    int getModeOrder(int mode);
+    int getBestMode();
+    void resetInfo();
+
+    mutable android::Mutex mExtDispLock;
+    int mFd;
+    int mCurrentMode;
+    int mExternalDisplay;
+    int mResolutionMode;
+    char mEDIDs[128];
+    int mEDIDModes[64];
+    int mModeCount;
+    hwc_context_t *mHwcContext;
+    fb_var_screeninfo mVInfo;
+};
+
+}; //qhwc
+// ---------------------------------------------------------------------------
+#endif //HWC_EXTERNAL_DISPLAY_H