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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
+ *****************************************************************************/
+