507 lines
15 KiB
C
507 lines
15 KiB
C
/****************************************************************************
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* graphics/vnc/server/vnc_fbdev.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/kthread.h>
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#include <nuttx/video/fb.h>
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#include "vnc_server.h"
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* This structure provides the frame buffer interface and also incapulates
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* information about the frame buffer instances for each display.
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*/
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struct vnc_fbinfo_s
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{
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/* The publically visible frame buffer interface. This must appear first
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* so that struct vnc_fbinfo_s is cast compatible with struct fb_vtable_s.
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*/
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struct fb_vtable_s vtable;
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/* Our private per-display information */
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bool initialized; /* True: This instance has been initialized */
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uint8_t display; /* Display number */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* Get information about the video controller configuration and the
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* configuration of each color plane.
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*/
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static int up_getvideoinfo(FAR struct fb_vtable_s *vtable,
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FAR struct fb_videoinfo_s *vinfo);
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static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
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FAR struct fb_planeinfo_s *pinfo);
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/* The following are provided only if the video hardware supports RGB color
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* mapping.
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*/
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#ifdef CONFIG_FB_CMAP
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static int up_getcmap(FAR struct fb_vtable_s *vtable,
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FAR struct fb_cmap_s *cmap);
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static int up_putcmap(FAR struct fb_vtable_s *vtable,
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FAR const struct fb_cmap_s *cmap);
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#endif
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/* The following are provided only if the video hardware supports a hardware
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* cursor.
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*/
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#ifdef CONFIG_FB_HWCURSOR
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static int up_getcursor(FAR struct fb_vtable_s *vtable,
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FAR struct fb_cursorattrib_s *attrib);
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static int up_setcursor(FAR struct fb_vtable_s *vtable,
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FAR struct fb_setcursor_s *setttings);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Current cursor position */
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#ifdef CONFIG_FB_HWCURSOR
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static struct fb_cursorpos_s g_cpos;
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/* Current cursor size */
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#ifdef CONFIG_FB_HWCURSORSIZE
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static struct fb_cursorsize_s g_csize;
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#endif
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#endif
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/* The framebuffer object -- There is no private state information in this simple
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* framebuffer simulation.
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*/
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static struct vnc_fbinfo_s g_fbinfo[RFB_MAX_DISPLAYS];
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_getvideoinfo
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****************************************************************************/
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static int up_getvideoinfo(FAR struct fb_vtable_s *vtable,
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FAR struct fb_videoinfo_s *vinfo)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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gvdbg("vtable=%p vinfo=%p\n", vtable, vinfo);
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DEBUGASSERT(fbinfo != NULL && vinfo != NULL);
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if (fbinfo != NULL && vinfo != NULL)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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/* Return the requested video info */
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vinfo->fmt = session->colorfmt;
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vinfo->xres = session->screen.w;
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vinfo->yres = session->screen.h;
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vinfo->nplanes = 1;
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return OK;
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}
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gdbg("ERROR: Invalid arguments\n");
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return -EINVAL;
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}
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/****************************************************************************
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* Name: up_getplaneinfo
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****************************************************************************/
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static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
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FAR struct fb_planeinfo_s *pinfo)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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gvdbg("vtable=%p planeno=%d pinfo=%p\n", vtable, planeno, pinfo);
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DEBUGASSERT(fbinfo != NULL && pinfo != NULL && planeno == 0);
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if (fbinfo != NULL && pinfo != NULL && planeno == 0)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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DEBUGASSERT(session->fb != NULL);
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pinfo->fbmem = (FAR void *)&session->fb;
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pinfo->fblen = (uint32_t)session->stride * CONFIG_VNCSERVER_SCREENWIDTH;
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pinfo->stride = (fb_coord_t)session->stride;
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pinfo->bpp = session->bpp;
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return OK;
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}
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gdbg("Returning EINVAL\n");
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return -EINVAL;
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}
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/****************************************************************************
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* Name: up_getcmap
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****************************************************************************/
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#ifdef CONFIG_FB_CMAP
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static int up_getcmap(FAR struct fb_vtable_s *vtable,
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FAR struct fb_cmap_s *cmap)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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int i;
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gvdbg("vtable=%p cmap=%p\n", vtable, cmap);
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DEBUGASSERT(fbinfo != NULL && cmap != NULL);
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if (fbinfo != NULL && cmap != NULL)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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gvdbg("first=%d len=%d\n", vcmap->first, cmap->len);
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#warning Missing logic
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return OK;
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}
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gdbg("Returning EINVAL\n");
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return -EINVAL;
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}
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#endif
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/****************************************************************************
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* Name: up_putcmap
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****************************************************************************/
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#ifdef CONFIG_FB_CMAP
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static int up_putcmap(FAR struct fb_vtable_s *vtable, FAR const struct fb_cmap_s *cmap)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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int i;
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gvdbg("vtable=%p cmap=%p\n", vtable, cmap);
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DEBUGASSERT(fbinfo != NULL && cmap != NULL);
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if (fbinfo != NULL && cmap != NULL)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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gvdbg("first=%d len=%d\n", vcmap->first, cmap->len);
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#warning Missing logic
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return OK;
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}
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gdbg("Returning EINVAL\n");
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return -EINVAL;
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}
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#endif
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/****************************************************************************
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* Name: up_getcursor
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****************************************************************************/
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#ifdef CONFIG_FB_HWCURSOR
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static int up_getcursor(FAR struct fb_vtable_s *vtable,
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FAR struct fb_cursorattrib_s *attrib)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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int i;
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gvdbg("vtable=%p attrib=%p\n", vtable, attrib);
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DEBUGASSERT(fbinfo != NULL && attrib != NULL);
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if (fbinfo != NULL && attrib != NULL)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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#warning Missing logic
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return OK;
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}
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gdbg("Returning EINVAL\n");
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return -EINVAL;
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}
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#endif
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/****************************************************************************
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* Name:
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****************************************************************************/
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#ifdef CONFIG_FB_HWCURSOR
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static int up_setcursor(FAR struct fb_vtable_s *vtable,
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FAR struct fb_setcursor_s *settings)
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{
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FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
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FAR struct vnc_session_s *session;
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int i;
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gvdbg("vtable=%p settings=%p\n", vtable, settings);
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DEBUGASSERT(fbinfo != NULL && settings != NULL);
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if (fbinfo != NULL && settings != NULL)
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{
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session = vnc_find_session(fbinfo->display);
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if (session == NULL || session->state != VNCSERVER_SCANNING)
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{
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gdbg("ERROR: session is not connected\n");
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return -ENOTCONN;
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}
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gvdbg("flags: %02x\n", settings->flags);
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if ((settings->flags & FB_CUR_SETPOSITION) != 0)
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{
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#warning Missing logic
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}
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#ifdef CONFIG_FB_HWCURSORSIZE
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if ((settings->flags & FB_CUR_SETSIZE) != 0)
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{
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#warning Missing logic
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}
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#endif
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#ifdef CONFIG_FB_HWCURSORIMAGE
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if ((settings->flags & FB_CUR_SETIMAGE) != 0)
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{
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#warning Missing logic
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}
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#endif
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return OK;
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}
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gdbg("Returning EINVAL\n");
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return -EINVAL;
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_fbinitialize
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*
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* Description:
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* Initialize the framebuffer video hardware associated with the display.
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*
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* Input parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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*
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* Returned Value:
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* Zero is returned on success; a negated errno value is returned on any
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* failure.
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*
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****************************************************************************/
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int up_fbinitialize(int display)
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{
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FAR char *argv[2];
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char str[8];
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pid_t pid;
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/* Start the VNC server kernel thread.
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* REVISIT: There is no protection for the case where this function is
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* called more that once.
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*/
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gvdbg("Starting the VNC server for display %d\n", display);
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DEBUGASSERT(display >= 8 && display < RFB_MAX_DISPLAYS);
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(void)itoa(display, str, 10);
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argv[0] = str;
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argv[1] = NULL;
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pid = kernel_thread("vnc_server", CONFIG_VNCSERVER_PRIO,
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CONFIG_VNCSERVER_STACKSIZE,
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(main_t)vnc_server, argv);
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if (pid < 0)
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{
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gdbg("ERROR: Failed to start the VNC server: %d\n", (int)pid);
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return (int)pid;
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}
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/* Wait for the VNC client to connect and for the RFB to be ready */
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#warning Missing logic
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return OK;
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}
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/****************************************************************************
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* Name: up_fbgetvplane
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*
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* Description:
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* Return a a reference to the framebuffer object for the specified video
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* plane of the specified plane. Many OSDs support multiple planes of video.
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*
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* Input parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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* vplane - Identifies the plane being queried.
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*
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* Returned Value:
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* A non-NULL pointer to the frame buffer access structure is returned on
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* success; NULL is returned on any failure.
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*
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****************************************************************************/
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FAR struct fb_vtable_s *up_fbgetvplane(int display, int vplane)
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{
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FAR struct vnc_session_s *session = vnc_find_session(display);
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FAR struct vnc_fbinfo_s *fbinfo;
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/* Verify that the session is still valid */
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if (session->state != VNCSERVER_SCANNING)
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{
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return NULL;
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}
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if (vplane == 0)
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{
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/* Has the framebuffer information been initialized for this display? */
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fbinfo = &g_fbinfo[display];
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if (!fbinfo->initialized)
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{
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fbinfo->vtable.getvideoinfo = up_getvideoinfo,
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fbinfo->vtable.getplaneinfo = up_getplaneinfo,
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#ifdef CONFIG_FB_CMAP
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fbinfo->vtable.getcmap = up_getcmap,
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fbinfo->vtable.putcmap = up_putcmap,
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#endif
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#ifdef CONFIG_FB_HWCURSOR
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fbinfo->vtable.getcursor = up_getcursor,
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fbinfo->vtable.setcursor = up_setcursor,
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#endif
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fbinfo->display = display;
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fbinfo->initialized = true;
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}
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return &fbinfo->vtable;
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}
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else
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{
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return NULL;
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}
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}
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/****************************************************************************
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* Name: up_fbuninitialize
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*
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* Description:
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* Uninitialize the framebuffer support for the specified display.
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*
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* Input Parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void up_fbuninitialize(int display)
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{
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FAR struct vnc_session_s *session = vnc_find_session(display);
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FAR struct vnc_fbinfo_s *fbinfo;
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DEBUGASSERT(session != NULL);
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fbinfo = &g_fbinfo[display];
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#warning Missing logic
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UNUSED(session);
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UNUSED(fbinfo);
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}
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