| /* |
| * Copyright (C) 2007-2008 ARM Limited |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| /** |
| * |
| * File Name: omxVCM4P2_BlockMatch_Integer_16x16.c |
| * OpenMAX DL: v1.0.2 |
| * Revision: 9641 |
| * Date: Thursday, February 7, 2008 |
| * |
| * |
| * |
| * |
| * Description: |
| * Contains modules for Block matching, a full search algorithm |
| * is implemented |
| * |
| */ |
| |
| #include "omxtypes.h" |
| #include "armOMX.h" |
| #include "omxVC.h" |
| |
| #include "armVC.h" |
| #include "armCOMM.h" |
| |
| /** |
| * Function: omxVCM4P2_BlockMatch_Integer_16x16 (6.2.4.2.1) |
| * |
| * Description: |
| * Performs a 16x16 block search; estimates motion vector and associated |
| * minimum SAD. Both the input and output motion vectors are represented using |
| * half-pixel units, and therefore a shift left or right by 1 bit may be |
| * required, respectively, to match the input or output MVs with other |
| * functions that either generate output MVs or expect input MVs represented |
| * using integer pixel units. |
| * |
| * Input Arguments: |
| * |
| * pSrcRefBuf - pointer to the reference Y plane; points to the reference |
| * MB that corresponds to the location of the current macroblock in |
| * the current plane. |
| * refWidth - width of the reference plane |
| * pRefRect - pointer to the valid reference plane rectangle; coordinates |
| * are specified relative to the image origin. Rectangle |
| * boundaries may extend beyond image boundaries if the image has |
| * been padded. For example, if padding extends 4 pixels beyond |
| * frame border, then the value for the left border could be set to |
| * -4. |
| * pSrcCurrBuf - pointer to the current block in the current macroblock |
| * buffer extracted from the original plane (linear array, 256 |
| * entries); must be aligned on a 16-byte boundary. The number of |
| * bytes between lines (step) is 16. |
| * pCurrPointPos - position of the current macroblock in the current plane |
| * pSrcPreMV - pointer to predicted motion vector; NULL indicates no |
| * predicted MV |
| * pSrcPreSAD - pointer to SAD associated with the predicted MV (referenced |
| * by pSrcPreMV); may be set to NULL if unavailable. |
| * pMESpec - vendor-specific motion estimation specification structure; |
| * must have been allocated and then initialized using |
| * omxVCM4P2_MEInit prior to calling the block matching function. |
| * |
| * Output Arguments: |
| * |
| * pDstMV - pointer to estimated MV |
| * pDstSAD - pointer to minimum SAD |
| * |
| * Return Value: |
| * |
| * OMX_Sts_NoErr - no error |
| * OMX_Sts_BadArgErr - bad arguments. Returned if one of the following |
| * conditions is true: |
| * - at least one of the following pointers is NULL: pSrcRefBuf, |
| * pRefRect, pSrcCurrBuff, pCurrPointPos, pDstMV, pDstSAD or |
| * pMESpec, or |
| * - pSrcCurrBuf is not 16-byte aligned |
| * |
| */ |
| |
| OMXResult omxVCM4P2_BlockMatch_Integer_16x16( |
| const OMX_U8 *pSrcRefBuf, |
| OMX_INT refWidth, |
| const OMXRect *pRefRect, |
| const OMX_U8 *pSrcCurrBuf, |
| const OMXVCM4P2Coordinate *pCurrPointPos, |
| const OMXVCMotionVector *pSrcPreMV, |
| const OMX_INT *pSrcPreSAD, |
| void *pMESpec, |
| OMXVCMotionVector *pDstMV, |
| OMX_INT *pDstSAD |
| ) |
| { |
| |
| OMX_U8 BlockSize = 16; |
| |
| /* Argument error checks */ |
| armRetArgErrIf(!armIs16ByteAligned(pSrcCurrBuf), OMX_Sts_BadArgErr); |
| |
| return ( armVCM4P2_BlockMatch_Integer( |
| pSrcRefBuf, |
| refWidth, |
| pRefRect, |
| pSrcCurrBuf, |
| pCurrPointPos, |
| pSrcPreMV, |
| pSrcPreSAD, |
| pMESpec, |
| pDstMV, |
| pDstSAD, |
| BlockSize) |
| ); |
| |
| |
| } |
| |
| /* End of file */ |