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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_CompareMV.c')
-rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_CompareMV.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_CompareMV.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_CompareMV.c new file mode 100644 index 0000000..3b8845e --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_CompareMV.c @@ -0,0 +1,71 @@ +/** + * + * File Name: armVCM4P2_CompareMV.c + * OpenMAX DL: v1.0.2 + * Revision: 9641 + * Date: Thursday, February 7, 2008 + * + * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. + * + * + * + * Description: + * Contains module for comparing motion vectors and SAD's to decide + * the best MV and SAD + * + */ + +#include "omxtypes.h" +#include "armOMX.h" + +#include "armVC.h" +#include "armCOMM.h" + +/** + * Function: armVCM4P2_CompareMV + * + * Description: + * Performs comparision of motion vectors and SAD's to decide the + * best MV and SAD + * + * Remarks: + * + * Parameters: + * [in] mvX x coordinate of the candidate motion vector + * [in] mvY y coordinate of the candidate motion vector + * [in] candSAD Candidate SAD + * [in] bestMVX x coordinate of the best motion vector + * [in] bestMVY y coordinate of the best motion vector + * [in] bestSAD best SAD + * + * Return Value: + * OMX_INT -- 1 to indicate that the current sad is the best + * 0 to indicate that it is NOT the best SAD + */ + +OMX_INT armVCM4P2_CompareMV ( + OMX_S16 mvX, + OMX_S16 mvY, + OMX_INT candSAD, + OMX_S16 bestMVX, + OMX_S16 bestMVY, + OMX_INT bestSAD +) +{ + if (candSAD < bestSAD) + { + return 1; + } + if (candSAD > bestSAD) + { + return 0; + } + /* shorter motion vector */ + if ( (mvX * mvX + mvY * mvY) < (bestMVX*bestMVX+bestMVY*bestMVY) ) + { + return 1; + } + return 0; +} + +/*End of File*/ |