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/roc_video_parser.cpp

@@ -19,18 +19,26 @@ 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.
 */
-#include "rocparser.h"
-#include "parser_handle.h"
-
 
+#include "roc_video_parser.h"
 
 /**
- * @brief 
+ * @brief Initializes any parser related stuff for all parsers
  * 
- * @param pData 
- * @return rocDecodeStatus 
+ * @return rocDecStatus : ROCDEC_SUCCESS on success
  */
-rocDecStatus RocVideoParser::ParseVideoData(RocdecSourceDataPacket *pData) {  
-    // todo:
+rocDecStatus RocVideoParser::Initialize(RocdecParserParams *pParams) {
+    if(pParams == nullptr) {
+        ERR(STR("Parser parameters are not set for the parser"));
+        return ROCDEC_NOT_INITIALIZED;
+    }
+    // Initialize callback function pointers
+    pfn_sequece_cb_         = pParams->pfnSequenceCallback;             /**< Called before decoding frames and/or whenever there is a fmt change */
+    pfn_decode_picture_cb_  = pParams->pfnDecodePicture;        /**< Called when a picture is ready to be decoded (decode order)         */
+    pfn_display_picture_cb_ = pParams->pfnDisplayPicture;      /**< Called whenever a picture is ready to be displayed (display order)  */
+    pfn_get_sei_message_cb_ = pParams->pfnGetSEIMsg;       /**< Called when all SEI messages are parsed for particular frame        */
+
+    parser_params_ = pParams;
+    
     return ROCDEC_SUCCESS;
 }