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/**
*
* File Name: omxVCCOMM_ExpandFrame_I.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 Expand Frame boundary pixels into Plane
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
/**
* Function: omxVCCOMM_ExpandFrame_I (6.1.3.2.1)
*
* Description:
* This function expands a reconstructed frame in-place. The unexpanded
* source frame should be stored in a plane buffer with sufficient space
* pre-allocated for edge expansion, and the input frame should be located in
* the plane buffer center. This function executes the pixel expansion by
* replicating source frame edge pixel intensities in the empty pixel
* locations (expansion region) between the source frame edge and the plane
* buffer edge. The width/height of the expansion regions on the
* horizontal/vertical edges is controlled by the parameter iExpandPels.
*
* Input Arguments:
*
* pSrcDstPlane - pointer to the top-left corner of the frame to be
* expanded; must be aligned on an 8-byte boundary.
* iFrameWidth - frame width; must be a multiple of 8.
* iFrameHeight -frame height; must be a multiple of 8.
* iExpandPels - number of pixels to be expanded in the horizontal and
* vertical directions; must be a multiple of 8.
* iPlaneStep - distance, in bytes, between the start of consecutive lines
* in the plane buffer; must be larger than or equal to
* (iFrameWidth + 2 * iExpandPels).
*
* Output Arguments:
*
* pSrcDstPlane -Pointer to the top-left corner of the frame (NOT the
* top-left corner of the plane); must be aligned on an 8-byte
* boundary.
*
* Return Value:
*
* OMX_Sts_NoErr - no error
* OMX_Sts_BadArgErr - bad arguments; returned under any of the following
* conditions:
* - pSrcDstPlane is NULL.
* - pSrcDstPlane is not aligned on an 8-byte boundary.
* - one of the following parameters is either equal to zero or is a
* non-multiple of 8: iFrameHeight, iFrameWidth, iPlaneStep, or
* iExpandPels.
* - iPlaneStep < (iFrameWidth + 2 * iExpandPels).
*
*/
OMXResult omxVCCOMM_ExpandFrame_I(
OMX_U8* pSrcDstPlane,
OMX_U32 iFrameWidth,
OMX_U32 iFrameHeight,
OMX_U32 iExpandPels,
OMX_U32 iPlaneStep
)
{
OMX_INT x, y;
OMX_U8* pLeft;
OMX_U8* pRight;
OMX_U8* pTop;
OMX_U8* pBottom;
/* check for argument error */
armRetArgErrIf(pSrcDstPlane == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(armNot8ByteAligned(pSrcDstPlane), OMX_Sts_BadArgErr)
armRetArgErrIf(iFrameWidth == 0 || iFrameWidth & 7, OMX_Sts_BadArgErr)
armRetArgErrIf(iFrameHeight== 0 || iFrameHeight & 7, OMX_Sts_BadArgErr)
armRetArgErrIf(iExpandPels == 0 || iExpandPels & 7, OMX_Sts_BadArgErr)
armRetArgErrIf(iPlaneStep == 0 || iPlaneStep & 7, OMX_Sts_BadArgErr)
armRetArgErrIf(iPlaneStep < (iFrameWidth + 2 * iExpandPels),
OMX_Sts_BadArgErr)
/* Top and Bottom */
pTop = pSrcDstPlane - (iExpandPels * iPlaneStep);
pBottom = pSrcDstPlane + (iFrameHeight * iPlaneStep);
for (y = 0; y < (OMX_INT)iExpandPels; y++)
{
for (x = 0; x < (OMX_INT)iFrameWidth; x++)
{
pTop [y * iPlaneStep + x] =
pSrcDstPlane [x];
pBottom [y * iPlaneStep + x] =
pSrcDstPlane [(iFrameHeight - 1) * iPlaneStep + x];
}
}
/* Left, Right and Corners */
pLeft = pSrcDstPlane - iExpandPels;
pRight = pSrcDstPlane + iFrameWidth;
for (y = -(OMX_INT)iExpandPels; y < (OMX_INT)(iFrameHeight + iExpandPels); y++)
{
for (x = 0; x < (OMX_INT)iExpandPels; x++)
{
pLeft [y * iPlaneStep + x] =
pSrcDstPlane [y * iPlaneStep + 0];
pRight [y * iPlaneStep + x] =
pSrcDstPlane [y * iPlaneStep + (iFrameWidth - 1)];
}
}
return OMX_Sts_NoErr;
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
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