114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/****************************************************************************
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* graphics/nxglib/lcd/nxglib_copyrectangle.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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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(
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FAR struct lcd_planeinfo_s *pinfo,
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FAR const struct nxgl_rect_s *dest,
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FAR const void *src,
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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) +
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(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
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* will 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,
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pinfo->buffer,
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remainder,
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ncols);
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pinfo->putrun(pinfo->dev, 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.
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* Copy the image data directly from the image memory.
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*/
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pinfo->putrun(pinfo->dev, 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
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* the source image.
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*/
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sline += srcstride;
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}
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}
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