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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_SADQuar_4x.c')
-rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_SADQuar_4x.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_SADQuar_4x.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_SADQuar_4x.c new file mode 100644 index 0000000..4b330ba --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_SADQuar_4x.c @@ -0,0 +1,85 @@ +/** + * + * File Name: omxVCM4P10_SADQuar_4x.c + * OpenMAX DL: v1.0.2 + * Revision: 9641 + * Date: Thursday, February 7, 2008 + * + * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. + * + * + * Description: + * This function will calculate SAD of pSrc with average of two Ref blocks + * of 4x8 or 4x4 blocks + * + */ + +#include "omxtypes.h" +#include "armOMX.h" +#include "omxVC.h" + +#include "armVC.h" +#include "armCOMM.h" + +/** + * Function: omxVCM4P10_SADQuar_4x (6.3.5.4.2) + * + * Description: + * This function calculates the SAD between one block (pSrc) and the average + * of the other two (pSrcRef0 and pSrcRef1) for 4x8 or 4x4 blocks. Rounding + * is applied according to the convention (a+b+1)>>1. + * + * Input Arguments: + * + * pSrc - Pointer to the original block; must be aligned on a 4-byte + * boundary. + * pSrcRef0 - Pointer to reference block 0 + * pSrcRef1 - Pointer to reference block 1 + * iSrcStep - Step of the original block buffer; must be a multiple of 4. + * iRefStep0 - Step of reference block 0 + * iRefStep1 - Step of reference block 1 + * iHeight - Height of the block; must be equal to either 4 or 8. + * + * Output Arguments: + * + * pDstSAD - Pointer of result SAD + * + * Return Value: + * OMX_Sts_NoErr, if the function runs without error. + * OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs: + * - iHeight is not equal to either 4 or 8. + * - One of more of the following pointers is NULL: pSrc, pSrcRef0, + * pSrcRef1, pDstSAD. + * - iSrcStep is not a multiple of 4 + * - Any alignment restrictions are violated + * + */ +OMXResult omxVCM4P10_SADQuar_4x( + const OMX_U8* pSrc, + const OMX_U8* pSrcRef0, + const OMX_U8* pSrcRef1, + OMX_U32 iSrcStep, + OMX_U32 iRefStep0, + OMX_U32 iRefStep1, + OMX_U32* pDstSAD, + OMX_U32 iHeight +) +{ + /* check for argument error */ + armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(pSrcRef0 == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(pSrcRef1 == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf(pDstSAD == NULL, OMX_Sts_BadArgErr); + armRetArgErrIf((iHeight != 8) && (iHeight != 4), OMX_Sts_BadArgErr); + armRetArgErrIf(armNot4ByteAligned(pSrc), OMX_Sts_BadArgErr); + armRetArgErrIf((iSrcStep == 0) || (iSrcStep & 3), OMX_Sts_BadArgErr); + + return armVCM4P10_SADQuar + (pSrc, pSrcRef0, pSrcRef1, iSrcStep, + iRefStep0, iRefStep1, pDstSAD, iHeight, 4); +} + +/***************************************************************************** + * END OF FILE + *****************************************************************************/ + |