commonsys-intf: display: Add frame extension interface

Add initial frame extension interface definition.

Change-Id: I2d1a7ba2e950910a81f4c2b86b93f5f03c2c3fd5

include/layer_extn_intf.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2019, 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 __LAYER_EXTN_INTF_H__
+#define __LAYER_EXTN_INTF_H__
+
+#include <sys/types.h>
+
+#include <vector>
+#include <string>
+
+namespace composer {
+
+#define LAYER_EXTN_LIBRARY_NAME "liblayerext.qti.so"
+#define CREATE_LAYER_EXTN_INTERFACE "CreateLayerExtnInterface"
+#define DESTROY_LAYER_EXTN_INTERFACE "DestroyLayerExtnInterface"
+
+#define LAYER_EXTN_REVISION_MAJOR (1)
+#define LAYER_EXTN_REVISION_MINOR (0)
+#define LAYER_EXTN_VERSION_TAG ((uint16_t) ((LAYER_EXTN_REVISION_MAJOR << 8) \
+                                          | LAYER_EXTN_REVISION_MINOR))
+
+class LayerExtnIntf {
+ public:
+  virtual ~LayerExtnIntf() = default;
+  virtual int GetLayerClass(const std::string &name) = 0;
+};
+
+typedef bool (*CreateLayerExtnInterface)(uint16_t version, LayerExtnIntf **interface);
+typedef void (*DestroyLayerExtnInterface)(LayerExtnIntf *interface);
+
+}  // namespace composer
+
+#endif  // __LAYER_EXTN_INTF_H__