parser high level class implementation (#10)

* rocDecode api defintions added for decoder and parser

* addressed review comments and changed struct names to CamelCase

* minot reformatting

* parser high level class implementation

[ROCm/rocdecode commit: 0a991c1776]

projects/rocdecode/src/parser/hevc_parser.h

@@ -0,0 +1,50 @@
+/*
+Copyright (c) 2023 - 2023 Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+#pragma once
+
+#include "roc_video_parser.h"
+
+class HEVCVideoParser : public RocVideoParser {
+
+public:
+    /**
+     * @brief Construct a new HEVCParser object
+     * 
+     */
+    HEVCVideoParser();
+    /**
+     * @brief Function to Initialize the parser
+     * 
+     * @return rocDecStatus 
+     */
+    virtual rocDecStatus Initialize(RocdecParserParams *pParams);
+    /**
+     * @brief Function to Parse video data: Typically called from application when a demuxed picture is ready to be parsed
+     * 
+     * @param pData: Pointer to picture data
+     * @return rocDecStatus: returns success on completion, else error_code for failure
+     */
+    virtual rocDecStatus ParseVideoData(RocdecSourceDataPacket *pData);     // pure virtual: implemented by derived class
+
+private:    
+
+};