122 lines
4.2 KiB
C
122 lines
4.2 KiB
C
/****************************************************************************
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* graphics/nxglib/lcd/nxsglib_copyrectangle.c
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*
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* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <assert.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxglib_bitblit.h"
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#include "nxglib_copyrun.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxgl_copyrectangle_*bpp
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*
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* Description:
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* Copy a rectangular bitmap image into the specific position in the
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* framebuffer memory.
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*
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****************************************************************************/
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void NXGL_FUNCNAME(nxgl_copyrectangle, NXGLIB_SUFFIX)
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(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *dest,
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FAR const void *src, FAR const struct nxgl_point_s *origin,
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unsigned int srcstride)
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{
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FAR const uint8_t *sline;
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unsigned int ncols;
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unsigned int row;
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unsigned int xoffset;
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#if NXGLIB_BITSPERPIXEL < 8
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unsigned int remainder;
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#endif
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/* Get the dimensions of the rectangle to fill: width in pixels,
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* height in rows
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*/
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ncols = dest->pt2.x - dest->pt1.x + 1;
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/* Set up to copy the image */
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xoffset = dest->pt1.x - origin->x;
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sline = (FAR const uint8_t *)src + NXGL_SCALEX(xoffset) + (dest->pt1.y - origin->y) * srcstride;
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#if NXGLIB_BITSPERPIXEL < 8
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remainder = NXGL_REMAINDERX(xoffset);
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#endif
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/* Copy the image, one row at a time */
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for (row = dest->pt1.y; row <= dest->pt2.y; row++)
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{
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#if NXGLIB_BITSPERPIXEL < 8
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/* if the source pixel is not aligned with a byte boundary, then we will
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* need to copy the image data to the run buffer first.
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*/
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if (remainder != 0)
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{
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NXGL_FUNCNAME(nxgl_copyrun, NXGLIB_SUFFIX)(sline, pinfo->buffer, remainder, ncols);
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pinfo->putrun(row, dest->pt1.x, pinfo->buffer, ncols);
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}
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else
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#endif
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{
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/* The pixel data is byte aligned. Copy the image data directly from
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* the image memory.
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*/
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pinfo->putrun(row, dest->pt1.x, sline, ncols);
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}
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/* Then adjust the source pointer to refer to the next line in the source
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* image.
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*/
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sline += srcstride;
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}
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}
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