Added framebuffer interface

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1298 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 354 insertions, 0 deletions

diff --git a/nuttx/arch/sim/src/up_framebuffer.c b/nuttx/arch/sim/src/up_framebuffer.c
new file mode 100644
index 000000000..e98de5611
--- /dev/null
+++ b/nuttx/arch/sim/src/up_framebuffer.c
@@ -0,0 +1,354 @@
+/****************************************************************************
+ * arch/sim/src/up_framebuffer.c
+ *
+ *   Copyright (C) 2008 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 <sys/types.h>
+
+#include <string.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/fb.h>
+#include "up_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_SIM_FBWIDTH
+#  define CONFIG_SIM_FBWIDTH  480 /* Framebuffer width in pixels */
+#endif
+
+#ifndef CONFIG_SIM_FBHEIGHT
+#  define CONFIG_SIM_FBHEIGHT 240 /* Framebuffer height in pixels */
+#endif
+
+#ifndef CONFIG_SIM_FBBPP
+#  define CONFIG_SIM_FBBPP    16  /* Framebuffer bytes per pixel (RGB) */
+#endif
+
+#undef CONFIG_SIM_FBFMT
+#if CONFIG_SIM_FBBPP == 1
+#  define FB_FMT FB_FMT_RGB1
+#elif CONFIG_SIM_FBBPP == 4
+#  define FB_FMT FB_FMT_RGB4
+#elif CONFIG_SIM_FBBPP == 8
+#  define FB_FMT FB_FMT_RGB8
+#elif CONFIG_SIM_FBBPP == 16
+#  define FB_FMT FB_FMT_RGB16
+#elif CONFIG_SIM_FBBPP == 24
+#  define FB_FMT FB_FMT_RGB24
+#elif CONFIG_SIM_FBBPP == 32
+#  define FB_FMT FB_FMT_RGB32
+#else
+#  error "Unsupported BPP"
+#endif
+
+/* Framebuffer characteristics in bytes */
+
+#define FB_WIDTH ((CONFIG_SIM_FBWIDTH * CONFIG_SIM_FBBPP + 7) / 8)
+#define FB_SIZE  (FB_WIDTH * CONFIG_SIM_FBHEIGHT)
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+  /* Get information about the video controller configuration and the configuration
+   * of each color plane.
+   */
+
+static int up_getvideoinfo(FAR struct fb_vtable_s *vtable, FAR struct fb_videoinfo_s *vinfo);
+static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno, FAR struct fb_planeinfo_s *pinfo);
+
+  /* The following is provided only if the video hardware supports RGB color mapping */
+
+#if CONFIG_FB_CMAP
+static int up_getcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *cmap);
+static int up_putcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *cmap);
+#endif
+  /* The following is provided only if the video hardware supports a hardware cursor */
+
+#ifdef CONFIG_FB_HWCURSOR
+static int up_getcursor(FAR struct fb_vtable_s *vtable, FAR struct fb_cursorattrib_s *attrib);
+static int up_setcursor(FAR struct fb_vtable_s *vtable, FAR struct fb_setcursor_s *setttings);
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static ubyte g_fb[FB_SIZE];
+
+/* This structure describes the simulated video controller */
+
+static const struct fb_videoinfo_s g_videoinfo =
+{
+  .fmt      = FB_FMT,
+  .xres     = CONFIG_SIM_FBWIDTH,
+  .yres     = CONFIG_SIM_FBHEIGHT,
+  .nplanes  = 1,
+};
+
+/* This structure describes the single, simulated color plane */
+
+static const struct fb_planeinfo_s g_planeinfo =
+{
+  .fbmem    = (FAR void *)&g_fb,
+  .fblen    = FB_SIZE,
+  .stride   = FB_WIDTH,
+  .bpp      = CONFIG_SIM_FBBPP,
+};
+
+/* Simulated RGB mapping */
+
+#if CONFIG_FB_CMAP
+static struct fb_cmap_s g_cmap;
+#endif
+
+/* Current cursor position */
+
+#ifdef CONFIG_FB_HWCURSOR
+static struct fb_cursorpos_s g_cpos;
+
+/* Current cursor size */
+
+#ifdef CONFIG_FB_HWCURSORSIZE
+static struct fb_cursorsize_s g_csize;
+#endif
+#endif
+
+/* The framebuffer object -- There is no private state information in this simple
+ * framebuffer simulation.
+ */
+
+struct fb_vtable_s g_fbobject =
+{
+  .getvideoinfo  = up_getvideoinfo,
+  .getplaneinfo  = up_getplaneinfo,
+#if CONFIG_FB_CMAP
+  .getcmap       = up_getcmap,
+  .putcmap       = up_putcmap,
+#endif
+#ifdef CONFIG_FB_HWCURSOR
+  .getcursor     = up_getcursor,
+  .setcursor     = up_setcursor,
+#endif
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: 
+ ****************************************************************************/
+
+static int up_getvideoinfo(FAR struct fb_vtable_s *vtable,
+                           FAR struct fb_videoinfo_s *vinfo)
+{
+  dbg("vtable=%p vinfo=%p\n", vtable, vinfo);
+  if (vtable && vinfo)
+    {
+      memcpy(vinfo, &g_videoinfo, sizeof(struct fb_videoinfo_s));
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+
+/****************************************************************************
+ * Name: up_getplaneinfo
+ ****************************************************************************/
+
+static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
+                           FAR struct fb_planeinfo_s *pinfo)
+{
+  dbg("vtable=%p planeno=%d pinfo=%p\n", vtable, planeno, pinfo);
+  if (vtable && planeno == 0 && pinfo)
+    {
+      memcpy(pinfo, &g_planeinfo, sizeof(struct fb_planeinfo_s));
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+
+/****************************************************************************
+ * Name: up_getcmap
+ ****************************************************************************/
+
+#if CONFIG_FB_CMAP
+static int up_getcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *cmap)
+{
+  int i;
+
+  dbg("vtable=%p cmap=%p cmap->len\n", vtable, cmap, cmap->len);
+  if (vtable && cmap)
+    {
+      cmap->len = 256;
+      for (i = 0; i < 256, i++)
+        {
+          cmap->red[i]    = i;
+          cmap->green[i]  = i;
+          cmap->blue[i]   = i;
+#ifdef CONFIG_FB_TRANSPARENCY
+          cmap->transp[i] = i;
+#endif
+        }
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+#endif
+
+/****************************************************************************
+ * Name: up_putcmap
+ ****************************************************************************/
+
+#if CONFIG_FB_CMAP
+static int up_putcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *cmap)
+{
+  dbg("vtable=%p cmap=%p cmap->len\n", vtable, cmap, cmap->len);
+  if (vtable && cmap)
+    {
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+#endif
+
+/****************************************************************************
+ * Name: up_getcursor
+ ****************************************************************************/
+
+#ifdef CONFIG_FB_HWCURSOR
+static int up_getcursor(FAR struct fb_vtable_s *vtable,
+                        FAR struct fb_cursorattrib_s *attrib)
+{
+  dbg("vtable=%p attrib=%p\n", vtable, attrib);
+  if (vtable && attrib)
+    {
+#ifdef CONFIG_FB_HWCURSORIMAGE
+      attrib->fmt      = FB_FMT;
+#endif
+      dbg("pos:      (x=%d, y=%d)\n", g_cpos.x, g_cpos.y);
+      attrib->pos      = g_cpos;
+#ifdef CONFIG_FB_HWCURSORSIZE
+      attrib->mxsize.h = CONFIG_SIM_FBHEIGHT;
+      attrib->mxsize.w = CONFIG_SIM_FBWIDTH;
+      dbg("size:     (h=%d, w=%d)\n", g_csize.h, g_csize.w);
+      attrib->size     = g_csize;
+#endif
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+#endif
+
+/****************************************************************************
+ * Name: 
+ ****************************************************************************/
+
+#ifdef CONFIG_FB_HWCURSOR
+static int up_setcursor(FAR struct fb_vtable_s *vtable,
+                       FAR struct fb_setcursor_s *setttings)
+{
+  dbg("vtable=%p setttings=%p\n", vtable, setttings);
+  if (vtable && setttings)
+    {
+      dbg("flags:   %02x\n", settings->flags);
+      if ((flags & FB_CUR_SETPOSITION) != 0)
+        {
+          g_cpos = settings->pos;
+          dbg("pos:     (h:%d, w:%d)\n", g_cpos.x, g_cpos.y);
+        }
+#ifdef CONFIG_FB_HWCURSORSIZE
+      if ((flags & FB_CUR_SETSIZE) != 0)
+        {
+          g_csize = settings->size;
+          dbg("size:    (h:%d, w:%d)\n", g_csize.h, g_csize.w);
+        }
+#endif
+#ifdef CONFIG_FB_HWCURSORIMAGE
+      if ((flags & FB_CUR_SETIMAGE) != 0)
+        {
+          dbg("image:   (h:%d, w:%d) @ %p\n",
+              settings->img.height, settings->img.width, settings->img.image);
+        }
+#endif
+      return OK;
+    }
+  dbg("Returning EINVAL\n");
+  return -EINVAL;
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_getfbobject
+ *
+ * Description:
+ *   Get a reference to the framebuffer object
+ *
+ * Input parameters:
+ *   None
+ *
+ * Returned value:
+ *   Reference to the framebuffer object (NULL on failure)
+ *
+ ****************************************************************************/
+
+FAR const struct fb_vtable_s *up_getfbobject(void)
+{
+  return &g_fbobject;
+}