1 /* ---------------------------------------------------------------- 2 * 3 * 4 * File Name: omxVCM4P10_DecodeChromaDcCoeffsToPairCAVLC.c 5 * OpenMAX DL: v1.0.2 6 * Revision: 9641 7 * Date: Thursday, February 7, 2008 8 * 9 * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 10 * 11 * 12 * 13 * H.264 decode coefficients module 14 * 15 */ 16 17 #include "omxtypes.h" 18 #include "armOMX.h" 19 #include "omxVC.h" 20 21 #include "armCOMM.h" 22 #include "armVC.h" 23 24 /** 25 * Function: omxVCM4P10_DecodeChromaDcCoeffsToPairCAVLC 26 * 27 * Description: 28 * Performs CAVLC decoding and inverse raster scan for 2x2 block of 29 * ChromaDCLevel. The decoded coefficients in packed position-coefficient 30 * buffer are stored in increasing raster scan order, namely position order. 31 * 32 * Remarks: 33 * 34 * Parameters: 35 * [in] ppBitStream Double pointer to current byte in bit stream 36 * buffer 37 * [in] pOffset Pointer to current bit position in the byte 38 * pointed to by *ppBitStream 39 * [out] ppBitStream *ppBitStream is updated after each block is decoded 40 * [out] pOffset *pOffset is updated after each block is decoded 41 * [out] pNumCoeff Pointer to the number of nonzero coefficients 42 * in this block 43 * [out] ppPosCoefbuf Double pointer to destination residual 44 * coefficient-position pair buffer 45 * 46 * Return Value: 47 * Standard omxError result. See enumeration for possible result codes. 48 * 49 */ 50 51 OMXResult omxVCM4P10_DecodeChromaDcCoeffsToPairCAVLC ( 52 const OMX_U8** ppBitStream, 53 OMX_S32* pOffset, 54 OMX_U8* pNumCoeff, 55 OMX_U8** ppPosCoefbuf 56 ) 57 58 { 59 return armVCM4P10_DecodeCoeffsToPair(ppBitStream, pOffset, pNumCoeff, 60 ppPosCoefbuf, 17, 4); 61 62 } 63
