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/****************************************************************************
* graphics/nxglib/fb/nxglib_fillrectangle.c
*
* Copyright (C) 2008-2011 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 <nuttx/fb.h>
#include <nuttx/nx/nxglib.h>
#include "nxglib_bitblit.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
#ifndef NXGLIB_SUFFIX
# error "NXGLIB_SUFFIX must be defined before including this header file"
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxgl_fillrectangle_*bpp
*
* Descripton:
* Fill a rectangle region in the framebuffer memory with a fixed color
*
****************************************************************************/
void NXGL_FUNCNAME(nxgl_fillrectangle,NXGLIB_SUFFIX)
(FAR struct fb_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect, nxgl_mxpixel_t color)
{
FAR uint8_t *line;
unsigned int width;
unsigned int stride;
int rows;
#if NXGLIB_BITSPERPIXEL < 8
FAR uint8_t *dest;
uint8_t mpixel = NXGL_MULTIPIXEL(color);
uint8_t leadmask;
uint8_t tailmask;
uint8_t mask;
int lnlen;
#endif
/* Get the width of the framebuffer in bytes */
stride = pinfo->stride;
/* Get the dimensions of the rectange to fill in pixels */
width = rect->pt2.x - rect->pt1.x + 1;
rows = rect->pt2.y - rect->pt1.y + 1;
/* Get the address of the first byte in the first line to write */
line = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x);
#if NXGLIB_BITSPERPIXEL < 8
# ifdef CONFIG_NX_PACKEDMSFIRST
/* Get the mask for pixels that are ordered so that they pack from the
* MS byte down.
*/
leadmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt2.x-1)));
# else
/* Get the mask for pixels that are ordered so that they pack from the
* LS byte up.
*/
leadmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x-1)));
# endif
#endif
/* Then fill the rectangle line-by-line */
while (rows-- > 0)
{
#if NXGLIB_BITSPERPIXEL < 8
/* Handle masking of the fractional initial byte */
mask = leadmask;
dest = line;
lnlen = width;
if (lnlen > 1 && mask)
{
dest[0] = (dest[0] & ~mask) | (mpixel & mask);
mask = 0xff;
dest++;
lnlen--;
}
/* Handle masking of the fractional final byte */
mask &= tailmask;
if (lnlen > 0 && mask)
{
dest[lnlen-1] = (dest[lnlen-1] & ~mask) | (mpixel & mask);
lnlen--;
}
/* Handle all of the unmasked bytes in-between */
if (lnlen > 0)
{
NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, lnlen);
}
#else
/* Draw the entire raster line */
NXGL_MEMSET(line, (NXGL_PIXEL_T)color, width);
#endif
line += stride;
}
}
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