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..144317519
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+++ b/nuttx/graphics/nxbe/nxbe_colormap.c
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+/****************************************************************************
+ * graphics/nxbe/nxbe_colormap.c
+ *
+ *   Copyright (C) 2008-2009,2011 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 <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