diff options
Diffstat (limited to 'nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c')
-rw-r--r-- | nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c b/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c new file mode 100644 index 000000000..988b6cb94 --- /dev/null +++ b/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c @@ -0,0 +1,141 @@ +/**************************************************************************** + * graphics/nxglib/lcd/nxsglib_copyrectangle.c + * + * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <assert.h> + +#include <nuttx/lcd/lcd.h> +#include <nuttx/nx/nxglib.h> + +#include "nxglib_bitblit.h" +#include "nxglib_copyrun.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxgl_copyrectangle_*bpp + * + * Descripton: + * Copy a rectangular bitmap image into the specific position in the + * framebuffer memory. + * + ****************************************************************************/ + +void NXGL_FUNCNAME(nxgl_copyrectangle,NXGLIB_SUFFIX) +(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *dest, + FAR const void *src, FAR const struct nxgl_point_s *origin, + unsigned int srcstride) +{ + FAR const uint8_t *sline; + unsigned int ncols; + unsigned int row; + unsigned int xoffset; +#if NXGLIB_BITSPERPIXEL < 8 + unsigned int remainder; +#endif + + /* Get the dimensions of the rectange to fill: width in pixels, + * height in rows + */ + + ncols = dest->pt2.x - dest->pt1.x + 1; + + /* Set up to copy the image */ + + xoffset = dest->pt1.x - origin->x; + sline = (const uint8_t*)src + NXGL_SCALEX(xoffset) + (dest->pt1.y - origin->y) * srcstride; +#if NXGLIB_BITSPERPIXEL < 8 + remainder = NXGL_REMAINDERX(xoffset); +#endif + + /* Copy the image, one row at a time */ + + for (row = dest->pt1.y; row <= dest->pt2.y; row++) + { +#if NXGLIB_BITSPERPIXEL < 8 + /* if the source pixel is not aligned with a byte boundary, then we will + * need to copy the image data to the run buffer first. + */ + + if (remainder != 0) + { + NXGL_FUNCNAME(nxgl_copyrun,NXGLIB_SUFFIX)(sline, pinfo->buffer, remainder, ncols); + (void)pinfo->putrun(row, dest->pt1.x, pinfo->buffer, ncols); + } + else +#endif + { + /* The pixel data is byte aligned. Copy the image data directly from + * the image memory. + */ + + (void)pinfo->putrun(row, dest->pt1.x, sline, ncols); + } + + /* Then adjust the source pointer to refer to the next line in the source + * image. + */ + + sline += srcstride; + } +} |