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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_Interpolate_Luma.c')
| -rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_Interpolate_Luma.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_Interpolate_Luma.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_Interpolate_Luma.c new file mode 100644 index 0000000..89978dd --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_Interpolate_Luma.c @@ -0,0 +1,195 @@ +/** + * + * File Name: armVCM4P10_Interpolate_Luma.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 interpolation for luma components + * + */ + +#include "omxtypes.h" +#include "armOMX.h" +#include "omxVC.h" + +#include "armCOMM.h" +#include "armVC.h" + +/** + * Function: armM4P10_Copy + * + * Description: + * This function performs copy a block of data from source to destination + * + * Remarks: + * + * [in] pSrc Pointer to top-left corner of block + * [in] iSrcStep Step of the source buffer. + * [in] iDstStep Step of the destination buffer. + * [in] iWidth Width of the current block + * [in] iHeight Height of the current block + * [out] pDst Pointer to the interpolation buffer + * + * Return Value: + * Standard OMXResult value. + * + */ +static OMXResult armM4P10_Copy( + const OMX_U8* pSrc, + OMX_U32 iSrcStep, + OMX_U8* pDst, + OMX_U32 iDstStep, + OMX_U32 iWidth, + OMX_U32 iHeight +) +{ + OMX_U32 x, y; + + for (y = 0; y < iHeight; y++) + { + for (x = 0; x < iWidth; x++) + { + pDst [y * iDstStep + x] = pSrc [y * iSrcStep + x]; + } + } + + return OMX_Sts_NoErr; +} + +/** + * Function: armVCM4P10_Interpolate_Luma + * + * Description: + * This function performs interpolation for luma components. + * + * Remarks: + * + * [in] pSrc Pointer to top-left corner of block used to + * interpolate in the reconstructed frame plane + * [in] iSrcStep Step of the source buffer. + * [in] iDstStep Step of the destination(interpolation) buffer. + * [in] iWidth Width of the current block + * [in] iHeight Height of the current block + * [in] dx Fractional part of horizontal motion vector + * component in 1/4 pixel unit (0~3) + * [in] dy Fractional part of vertical motion vector + * component in 1/4 pixel unit (0~3) + * [out] pDst Pointer to the interpolation buffer + * + * Return Value: + * Standard OMXResult value. + * + */ + + OMXResult armVCM4P10_Interpolate_Luma( + const OMX_U8 *pSrc, + OMX_U32 iSrcStep, + OMX_U8 *pDst, + OMX_U32 iDstStep, + OMX_U32 iWidth, + OMX_U32 iHeight, + OMX_U32 dx, + OMX_U32 dy +) +{ + OMX_U8 pBuf1 [16*16]; + const OMX_U8 *pSrcHalfHor = pSrc; + const OMX_U8 *pSrcHalfVer = pSrc; + + /* check for argument error */ + armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr) + armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr) + armRetArgErrIf(dx > 3, OMX_Sts_BadArgErr) + armRetArgErrIf(dy > 3, OMX_Sts_BadArgErr) + + /* Work out positions for half pixel interpolation */ + if (dx == 3) + { + pSrcHalfVer += 1; + } + if (dy == 3) + { + pSrcHalfHor += iSrcStep; + } + + /* Switch on type of pixel + * Pixels are named 'a' to 's' as in the H.264 standard + */ + if (dx == 0 && dy == 0) + { + /* G */ + armM4P10_Copy(pSrc, iSrcStep, pDst, iDstStep, iWidth, iHeight); + } + else if (dy == 0) + { + /* a, b, c */ + armVCM4P10_InterpolateHalfHor_Luma + (pSrcHalfHor, iSrcStep, pDst, iDstStep, iWidth, iHeight); + + if (dx == 1 || dx == 3) + { + armVCCOMM_Average + (pDst, pSrcHalfVer, iDstStep, iSrcStep, pDst, iDstStep, iWidth, iHeight); + } + } + else if (dx == 0) + { + /* d, h, n */ + armVCM4P10_InterpolateHalfVer_Luma + (pSrcHalfVer, iSrcStep, pDst, iDstStep, iWidth, iHeight); + + if (dy == 1 || dy == 3) + { + armVCCOMM_Average + (pDst, pSrcHalfHor, iDstStep, iSrcStep, pDst, iDstStep, iWidth, iHeight); + } + } + else if (dx == 2 || dy == 2) + { + /* j */ + armVCM4P10_InterpolateHalfDiag_Luma + (pSrc, iSrcStep, pDst, iDstStep, iWidth, iHeight); + + if (dx == 1 || dx == 3) + { + /* i, k */ + armVCM4P10_InterpolateHalfVer_Luma + (pSrcHalfVer, iSrcStep, pBuf1, iWidth, iWidth, iHeight); + + armVCCOMM_Average + (pDst, pBuf1, iDstStep, iWidth, pDst, iDstStep, iWidth, iHeight); + } + if (dy == 1 || dy == 3) + { + /* f,q */ + armVCM4P10_InterpolateHalfHor_Luma + (pSrcHalfHor, iSrcStep, pBuf1, iWidth, iWidth, iHeight); + + armVCCOMM_Average + (pDst, pBuf1, iDstStep, iWidth, pDst, iDstStep, iWidth, iHeight); + } + } + else /* dx=1,3 and dy=1,3 */ + { + /* e, g, p, r */ + armVCM4P10_InterpolateHalfHor_Luma + (pSrcHalfHor, iSrcStep, pBuf1, iWidth, iWidth, iHeight); + + armVCM4P10_InterpolateHalfVer_Luma + (pSrcHalfVer, iSrcStep, pDst, iDstStep, iWidth, iHeight); + + armVCCOMM_Average + (pBuf1, pDst, iWidth, iDstStep, pDst, iDstStep, iWidth, iHeight); + } + + return OMX_Sts_NoErr; +} + +/***************************************************************************** + * END OF FILE + *****************************************************************************/ |