Decode progressive DC initial
| FwStatus | fwiDecodeHuffman8x8_DCRefine_JPEG_1u16s_C1 | ( | const Fw8u * pSrc, int srcLenBytes, int * pSrcCurrPos, Fw16s * pDst, int * pMarker, int Al, FwiDecodeHuffmanState * pDecHuffState ); |
| Al | Progressive JPEG successive approximation parameter for actual point transform. | |
| pDecHuffState | Pointer to the FwiDecodeHuffmanState structure. | |
| pDst | Pointer to a location in a destination buffer. | |
| pMarker | Pointer to the JPEG marker position. | |
| pSrc | Pointer to a location in a source buffer. | |
| pSrcCurrPos | Pointer to the shift value at the current source buffer in bytes. | |
| srcLenBytes | Source buffer length in bytes. |
This function performs a subsequent scan for progressive decoding of the DC coefficient of an 8X8 data block.
The decoding process follows CCITT Rec. T.81, Annex G.2.2.
When the function detects a JPEG marker, it stops decoding and writes the marker to the location specified by pMarker.