BitMiracle.LibJpeg.Classic.jpeg_decompress_struct.jpeg_consume_input C# (CSharp) Method

        public ReadResult jpeg_consume_input()
        {
            ReadResult retcode = ReadResult.JPEG_SUSPENDED;

            /* NB: every possible DSTATE value should be listed in this switch */
            switch (m_global_state)
            {
                case JpegState.DSTATE_START:
                    jpeg_consume_input_start();
                    retcode = jpeg_consume_input_inHeader();
                    break;
                case JpegState.DSTATE_INHEADER:
                    retcode = jpeg_consume_input_inHeader();
                    break;
                case JpegState.DSTATE_READY:
                    /* Can't advance past first SOS until start_decompress is called */
                    retcode = ReadResult.JPEG_REACHED_SOS;
                    break;
                case JpegState.DSTATE_PRELOAD:
                case JpegState.DSTATE_PRESCAN:
                case JpegState.DSTATE_SCANNING:
                case JpegState.DSTATE_RAW_OK:
                case JpegState.DSTATE_BUFIMAGE:
                case JpegState.DSTATE_BUFPOST:
                case JpegState.DSTATE_STOPPING:
                    retcode = m_inputctl.consume_input();
                    break;
                default:
                    ERREXIT(J_MESSAGE_CODE.JERR_BAD_STATE, (int)m_global_state);
                    break;
            }
            return retcode;
        }