rocDecode: Added error handling of missing headers in cases where they are not parsed but referred in the frame decode process. One example is when frame seek is performed and the target picture is not a random access point. (#335)

* * rocDecode: Added error handling of missing headers in cases where they are not parsed but referred in the frame decode process. One example is when frame seek is performed and the target picture is not a random access point.

* * rocDecode/HEVC: Added some missing error handlings.

---------

Co-authored-by: Aryan Salmanpour <aryan.salmanpour@amd.com>

[ROCm/rocdecode commit: ba36534f1f]

projects/rocdecode/src/parser/hevc_parser.h

@@ -273,9 +273,9 @@ protected:
      * \param [in] nalu A pointer of <tt>uint8_t</tt> for the input stream to be parsed
      * \param [in] size Size of the input stream
      * \param [out] p_slice_header Pointer to the slice header struct
-     * \return True is successful, else false
+     * \return <tt>ParserResult</tt>
      */
-    bool ParseSliceHeader(uint8_t *nalu, size_t size, HevcSliceSegHeader *p_slice_header);
+    ParserResult ParseSliceHeader(uint8_t *nalu, size_t size, HevcSliceSegHeader *p_slice_header);
 
     /*! \brief Function to calculate the picture order count of the current picture. Once per picutre. (8.3.1)
      */
@@ -322,9 +322,9 @@ protected:
     /*! \brief Function to parse one picture bit stream received from the demuxer.
      * \param [in] p_stream A pointer of <tt>uint8_t</tt> for the input stream to be parsed
      * \param [in] pic_data_size Size of the input stream
-     * \return True is successful, else false
+     * \return <tt>ParserResult</tt>
      */
-    bool ParsePictureData(const uint8_t* p_stream, uint32_t pic_data_size);
+    ParserResult ParsePictureData(const uint8_t* p_stream, uint32_t pic_data_size);
 
 #if DBGINFO
     void PrintVps(HevcVideoParamSet *vps_ptr);