sde: Interfaces for Snapdragon Display Engine (SDE)

1. Define SDE interfaces for hwc.
2. Define strategy manager interfaces for composition manager.
3. Define utility classes used by SDE.

Change-Id: I2985fbd05e824cb41ac9b03aa0114daac754d712

displayengine/include/utils/debug.h

@@ -0,0 +1,56 @@
+/*
+* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without modification, are permitted
+* provided that the following conditions are met:
+*    * Redistributions of source code must retain the above copyright notice, this list of
+*      conditions and the following disclaimer.
+*    * Redistributions in binary form must reproduce the above copyright notice, this list of
+*      conditions and the following disclaimer in the documentation and/or other materials provided
+*      with the distribution.
+*    * Neither the name of The Linux Foundation nor the names of its contributors may be used to
+*      endorse or promote products derived from this software without specific prior written
+*      permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __DEBUG_H__
+#define __DEBUG_H__
+
+namespace sde {
+
+enum LogTag {
+  kTagNone = 0,   //!< Log tag name is not specified.
+  kTagCore,       //!< Log is tagged for display core.
+  kTagStrategy,   //!< Log is tagged for composition strategy.
+};
+
+class Debug {
+ public:
+  // Log handlers
+  static void Error(const LogTag &tag, const char *format, ...);
+  static void Warning(const LogTag &tag, const char *format, ...);
+  static void Info(const LogTag &tag, const char *format, ...);
+  static void Verbose(const LogTag &tag, const char *format, ...);
+
+  // Debug properties
+  static bool IsVirtualDriver() { return debug_.virtual_driver_; }
+
+ private:
+  Debug();
+  bool virtual_driver_;
+  static Debug debug_;
+};
+
+}  // namespace sde
+
+#endif  // __DEBUG_H__
+