237 lines
7.2 KiB
C
237 lines
7.2 KiB
C
/****************************************************************************
|
|
* graphics/nxglib/fb/nxglib_moverectangle.c
|
|
*
|
|
* Copyright (C) 2008-2012 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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/video/fb.h>
|
|
#include <nuttx/nx/nxglib.h>
|
|
|
|
#include "nxglib_bitblit.h"
|
|
|
|
/****************************************************************************
|
|
* 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
|
|
*
|
|
* Description:
|
|
* Move a rectangular region from location to another in the
|
|
* framebuffer memory. The source is expressed as a rectangle; the
|
|
* destination position is expressed as a point corresponding to the
|
|
* translation of the upper, left-hand corner.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void NXGL_FUNCNAME(nxgl_moverectangle,NXGLIB_SUFFIX)
|
|
(FAR struct fb_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
|
|
|
|
/* sline = address of the first pixel in the top row of the source in
|
|
* framebuffer memory
|
|
*/
|
|
|
|
sline = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x);
|
|
|
|
/* dline = address of the first pixel in the top row of the destination
|
|
* in framebuffer memory. We get dline by subtract the offset from the
|
|
* source position.
|
|
*/
|
|
|
|
dline = pinfo->fbmem + offset->y * stride + NXGL_SCALEX(offset->x);
|
|
|
|
/* Case 1: Is the destination position above the displayed position?
|
|
* If the destination position is less then then the src address, then the
|
|
* destination is offset to a position below (and or to the left) of the
|
|
* source in framebuffer memory.
|
|
*/
|
|
|
|
if (offset->y < rect->pt1.y ||
|
|
(offset->y < rect->pt1.y && offset->x <= rect->pt1.x))
|
|
{
|
|
/* Yes.. Copy the rectangle from top down (i.e., adding the stride
|
|
* to move to the next, lower row) */
|
|
|
|
while (rows--)
|
|
{
|
|
/* Copy the row */
|
|
|
|
#if NXGLIB_BITSPERPIXEL < 8
|
|
nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask);
|
|
#else
|
|
NXGL_MEMCPY(dline, sline, width);
|
|
#endif
|
|
/* Point to the next source/dest row below the current one */
|
|
|
|
dline += stride;
|
|
sline += stride;
|
|
}
|
|
}
|
|
|
|
/* Case 2: No.. the destination position is above (or to the left of)
|
|
* the displayed source position
|
|
*/
|
|
|
|
else
|
|
{
|
|
/* Adjust sline and dline to point to the bottom row (+1) of the
|
|
* source and destination rectangles in framebuffer memory.
|
|
*/
|
|
|
|
unsigned int hoffset = rows * stride;
|
|
sline += hoffset;
|
|
dline += hoffset;
|
|
|
|
/* Copy the rectangle from the bottom up (i.e., subtracting stride
|
|
* to re-position to the previous, higher row)
|
|
*/
|
|
|
|
while (rows--)
|
|
{
|
|
/* Point to the next source/dest row above the current one */
|
|
|
|
dline -= stride;
|
|
sline -= stride;
|
|
|
|
/* Copy the row */
|
|
|
|
#if NXGLIB_BITSPERPIXEL < 8
|
|
nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask);
|
|
#else
|
|
NXGL_MEMCPY(dline, sline, width);
|
|
#endif
|
|
}
|
|
}
|
|
}
|