diff options
Diffstat (limited to 'nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c')
| -rwxr-xr-x | nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c b/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c new file mode 100755 index 000000000..035f052bc --- /dev/null +++ b/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c @@ -0,0 +1,212 @@ +/**************************************************************************** + * graphics/nxglib/lcd/nxglib_moverectangle.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 + ****************************************************************************/ + +/**************************************************************************** + * Name: nxgl_lowresmemcpy + ****************************************************************************/ + +#if NXGLIB_BITSPERPIXEL < 8 +static inline void nxgl_lowresmemcpy(FAR uint8_t *dline, FAR const uint8_t *sline, + unsigned int width, + uint8_t leadmask, uint8_t tailmask) +{ + FAR const uint8_t *sptr; + FAR uint8_t *dptr; + uint8_t mask; + int lnlen; + + /* 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); + } +} +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxgl_moverectangle_*bpp + * + * Descripton: + * Move a rectangular region from location to another in the + * framebuffer memory. + * + ****************************************************************************/ + +void NXGL_FUNCNAME(nxgl_moverectangle,NXGLIB_SUFFIX) +(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect, + FAR struct nxgl_point_s *offset) +{ + FAR const uint8_t *sline; + FAR uint8_t *dline; + unsigned int width; + unsigned int stride; + unsigned int rows; + +#if NXGLIB_BITSPERPIXEL < 8 + uint8_t leadmask; + uint8_t tailmask; +#endif + + /* Get the width of the framebuffer in bytes */ + + stride = pinfo->stride; + + /* Get the dimensions of the rectange to fill: width in pixels, height + * in rows + */ + + width = rect->pt2.x - rect->pt1.x + 1; + rows = rect->pt2.y - rect->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(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 + + /* Case 1: The starting position is above the display */ + + if (offset->y < 0) + { + dline = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x); + sline = dline - offset->y * stride - NXGL_SCALEX(offset->x); + + while (rows--) + { +#if NXGLIB_BITSPERPIXEL < 8 + nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask); +#else + NXGL_MEMCPY(dline, sline, width); +#endif + dline += stride; + sline += stride; + } + } + + /* Case 2: It's not */ + + else + { + dline = pinfo->fbmem + rect->pt2.y * stride + NXGL_SCALEX(rect->pt1.x); + sline = dline - offset->y * stride - NXGL_SCALEX(offset->x); + + while (rows--) + { + dline -= stride; + sline -= stride; +#if NXGLIB_BITSPERPIXEL < 8 + nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask); +#else + NXGL_MEMCPY(dline, sline, width); +#endif + } + } +} |