diff options
Diffstat (limited to 'nuttx/graphics/nxbe/nxbe_colormap.c')
-rw-r--r-- | nuttx/graphics/nxbe/nxbe_colormap.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/nuttx/graphics/nxbe/nxbe_colormap.c b/nuttx/graphics/nxbe/nxbe_colormap.c new file mode 100644 index 000000000..e33877382 --- /dev/null +++ b/nuttx/graphics/nxbe/nxbe_colormap.c @@ -0,0 +1,155 @@ +/**************************************************************************** + * graphics/nxbe/nxbe_colormap.c + * + * Copyright (C) 2008-2009,2011 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 <stdlib.h> +#include <string.h> +#include <errno.h> +#include <debug.h> + +#include "nxbe.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxbe_colormap + * + * Description: + * Set the harware color map to the palette expected by NX + * + ****************************************************************************/ + +#if CONFIG_FB_CMAP +int nxbe_colormap(FAR NX_DRIVERTYPE *dev) +{ + struct fb_cmap_s cmap; + uint8_t *alloc; + uint8_t *red; + uint8_t *green; + uint8_t *blue; + uint8_t rval; + uint8_t gval; + int size; + int ndx; + int ret; + int i, j, k; + + /* Allocate the color map tables in one allocation: + * + * size = 3 colors x CONFIG_NX_COLORS each x 8-bits per color + */ + + size = 3 * CONFIG_NX_NCOLORS * sizeof(uint8_t); + alloc = (uint8_t*)malloc(size); + if (alloc == NULL) + { + return -ENOMEM; + } + memset(alloc, 0xff, size); + + /* Then get pointers to each color table */ + + red = alloc; + green = &alloc[CONFIG_NX_NCOLORS]; + blue = &alloc[2*CONFIG_NX_NCOLORS]; + + /* Initialize the color map tables. 6*6*6 = 216, the rest + * are (0xff, 0xfff 0xff) + */ + + ndx = 0; + for (i = 0; i < 6; i++) + { + rval = (i * (CONFIG_NX_NCOLORS-1) / 5) << 8; + for (j = 0; j < 6; j++) + { + gval = (j * (CONFIG_NX_NCOLORS-1) / 5) << 8; + for (k = 0; k < 6; k++) + { + red[ndx] = rval; + green[ndx] = gval; + blue[ndx] = k * (CONFIG_NX_NCOLORS-1) / 5; + ndx++; + } + } + } + + /* Now configure the cmap structure */ + + cmap.first = 0; + cmap.len = CONFIG_NX_NCOLORS; + cmap.red = red; + cmap.green = green; + cmap.blue = blue; +#ifdef CONFIG_FB_TRANSPARENCY + cmap.transp = NULL; +#endif + + /* Then set the color map */ + + ret = dev->putcmap(dev, &cmap); + + free(alloc); + return ret; +} +#endif |