diff options
Diffstat (limited to 'nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c')
| -rwxr-xr-x | nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c b/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c new file mode 100755 index 000000000..62307233a --- /dev/null +++ b/nuttx/graphics/nxglib/lcd/nxglib_copyrectangle.c @@ -0,0 +1,179 @@ +/**************************************************************************** + * graphics/nxglib/lcd`/nxsglib_copyrectangle.c + * + * Copyright (C) 2010 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/lcd.h> +#include <nuttx/nxglib.h> + +#include "nxglib_bitblit.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; + FAR uint8_t *dline; + unsigned int width; + unsigned int deststride; + unsigned int rows; + +#if NXGLIB_BITSPERPIXEL < 8 + FAR const uint8_t *sptr; + FAR uint8_t *dptr; + uint8_t leadmask; + uint8_t tailmask; + uint8_t mask; + int lnlen; +#endif + + /* Get the width of the framebuffer in bytes */ + + deststride = pinfo->stride; + + /* Get the dimensions of the rectange to fill: width in pixels, + * height in rows + */ + + width = dest->pt2.x - dest->pt1.x + 1; + rows = dest->pt2.y - dest->pt1.y + 1; + +#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(dest->pt1.x))); + tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(dest->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(dest->pt1.x))); + tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(dest->pt1.x-1))); +# endif +#endif + + /* Then copy the image */ + + sline = (const uint8_t*)src + NXGL_SCALEX(dest->pt1.x - origin->x) + (dest->pt1.y - origin->y) * srcstride; + dline = pinfo->fbmem + dest->pt1.y * deststride + NXGL_SCALEX(dest->pt1.x); + + while (rows--) + { +#if NXGLIB_BITSPERPIXEL < 8 + /* Handle masking of the fractional initial byte */ + + mask = leadmask; + sptr = sline; + dptr = dline; + lnlen = width; + + if (lnlen > 1 && mask) + { + dptr[0] = (dptr[0] & ~mask) | (sptr[0] & mask); + mask = 0xff; + dptr++; + sptr++; + lnlen--; + } + + /* Handle masking of the fractional final byte */ + + mask &= tailmask; + if (lnlen > 0 && mask) + { + dptr[lnlen-1] = (dptr[lnlen-1] & ~mask) | (sptr[lnlen-1] & mask); + lnlen--; + } + + /* Handle all of the unmasked bytes in-between */ + + if (lnlen > 0) + { + NXGL_MEMCPY(dptr, sptr, lnlen); + } +#else + /* Copy the whole line */ + + NXGL_MEMCPY((NXGL_PIXEL_T*)dline, (NXGL_PIXEL_T*)sline, width); +#endif + dline += deststride; + sline += srcstride; + } +} |