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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/omxVCM4P2_PredictReconCoefIntra.c')
-rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/omxVCM4P2_PredictReconCoefIntra.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/omxVCM4P2_PredictReconCoefIntra.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/omxVCM4P2_PredictReconCoefIntra.c new file mode 100644 index 0000000..1613f47 --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/omxVCM4P2_PredictReconCoefIntra.c @@ -0,0 +1,121 @@ + /** + * + * File Name: omxVCM4P2_PredictReconCoefIntra.c + * OpenMAX DL: v1.0.2 + * Revision: 9641 + * Date: Thursday, February 7, 2008 + * + * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. + * + * + * + * File: omxVCM4P2_PredictReconCoefIntra_S16.c + * Description: Contains modules for AC DC prediction + * + */ + +#include "omxtypes.h" +#include "armOMX.h" +#include "omxVC.h" + +#include "armCOMM.h" +#include "armVC.h" + +/** + * Function: omxVCM4P2_PredictReconCoefIntra (6.2.5.4.3) + * + * Description: + * Performs adaptive DC/AC coefficient prediction for an intra block. Prior + * to the function call, prediction direction (predDir) should be selected as + * specified in [ISO14496-2], subclause 7.4.3.1. + * + * Input Arguments: + * + * pSrcDst - pointer to the coefficient buffer which contains the quantized + * coefficient residuals (PQF) of the current block; must be + * aligned on a 4-byte boundary. The output coefficients are + * saturated to the range [-2048, 2047]. + * pPredBufRow - pointer to the coefficient row buffer; must be aligned on + * a 4-byte boundary. + * pPredBufCol - pointer to the coefficient column buffer; must be aligned + * on a 4-byte boundary. + * curQP - quantization parameter of the current block. curQP may equal to + * predQP especially when the current block and the predictor block + * are in the same macroblock. + * predQP - quantization parameter of the predictor block + * predDir - indicates the prediction direction which takes one of the + * following values: OMX_VC_HORIZONTAL - predict horizontally + * OMX_VC_VERTICAL - predict vertically + * ACPredFlag - a flag indicating if AC prediction should be performed. It + * is equal to ac_pred_flag in the bit stream syntax of MPEG-4 + * videoComp - video component type (luminance or chrominance) of the + * current block + * + * Output Arguments: + * + * pSrcDst - pointer to the coefficient buffer which contains the quantized + * coefficients (QF) of the current block + * pPredBufRow - pointer to the updated coefficient row buffer + * pPredBufCol - pointer to the updated coefficient column buffer Note: + * Buffer update: Update the AC prediction buffer (both row and + * column buffer). + * + * Return Value: + * + * OMX_Sts_NoErr - no error + * OMX_Sts_BadArgErr - bad arguments, if: + * - At least one of the pointers is NULL: + * pSrcDst, pPredBufRow, or pPredBufCol. + * - curQP <= 0, + * - predQP <= 0, + * - curQP >31, + * - predQP > 31, + * - preDir exceeds [1,2] + * - pSrcDst, pPredBufRow, or pPredBufCol is not 4-byte aligned. + * + */ + +OMXResult omxVCM4P2_PredictReconCoefIntra( + OMX_S16 * pSrcDst, + OMX_S16 * pPredBufRow, + OMX_S16 * pPredBufCol, + OMX_INT curQP, + OMX_INT predQP, + OMX_INT predDir, + OMX_INT ACPredFlag, + OMXVCM4P2VideoComponent videoComp + ) +{ + OMX_U8 flag; + /* Argument error checks */ + armRetArgErrIf(pSrcDst == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(pPredBufRow == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(pPredBufCol == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(curQP <= 0, OMX_Sts_BadArgErr); + armRetArgErrIf(predQP <= 0, OMX_Sts_BadArgErr); + armRetArgErrIf(curQP > 31, OMX_Sts_BadArgErr); + armRetArgErrIf(predQP > 31, OMX_Sts_BadArgErr); + armRetArgErrIf((predDir != 1) && (predDir != 2), OMX_Sts_BadArgErr); + armRetArgErrIf(!armIs4ByteAligned(pSrcDst), OMX_Sts_BadArgErr); + armRetArgErrIf(!armIs4ByteAligned(pPredBufRow), OMX_Sts_BadArgErr); + armRetArgErrIf(!armIs4ByteAligned(pPredBufCol), OMX_Sts_BadArgErr); + + flag = 0; + return armVCM4P2_ACDCPredict( + pSrcDst, + NULL, + pPredBufRow, + pPredBufCol, + curQP, + predQP, + predDir, + ACPredFlag, + videoComp, + flag, + NULL); + +} + +/* End of file */ + + |