/**************************************************************************** * graphics/nxmu/nxmu_server.c * * Copyright (C) 2008-2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include #include #include #include #include "nxfe.h" /**************************************************************************** * Pre-Processor Definitions ****************************************************************************/ /**************************************************************************** * Private Types ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: nxmu_disconnect ****************************************************************************/ static inline void nxmu_disconnect(FAR struct nxfe_conn_s *conn) { struct nxclimsg_disconnected_s outmsg; int ret; /* Send the handshake message back to the client */ outmsg.msgid = NX_CLIMSG_DISCONNECTED; ret = nxmu_sendclient(conn, &outmsg, sizeof(struct nxclimsg_disconnected_s)); if (ret < 0) { gdbg("nxmu_sendclient failed: %d\n", errno); } /* Close the outgoing client message queue */ (void)mq_close(conn->swrmq); } /**************************************************************************** * Name: nxmu_connect ****************************************************************************/ static inline void nxmu_connect(FAR struct nxfe_conn_s *conn) { char mqname[NX_CLIENT_MXNAMELEN]; struct nxclimsg_connected_s outmsg; int ret; /* Create the client MQ name */ sprintf(mqname, NX_CLIENT_MQNAMEFMT, conn->cid); /* Open the client MQ -- this should have already been created by the client */ conn->swrmq = mq_open(mqname, O_WRONLY); if (conn->swrmq == (mqd_t)-1) { gdbg("mq_open(%s) failed: %d\n", mqname, errno); outmsg.msgid = NX_CLIMSG_DISCONNECTED; } /* Send the handshake message back to the client */ outmsg.msgid = NX_CLIMSG_CONNECTED; ret = nxmu_sendclient(conn, &outmsg, sizeof(struct nxclimsg_connected_s)); if (ret < 0) { gdbg("nxmu_sendclient failed: %d\n", errno); } } /**************************************************************************** * Name: nxmu_shutdown ****************************************************************************/ static inline void nxmu_shutdown(FAR struct nxfe_state_s *fe) { FAR struct nxbe_window_s *wnd; /* Inform all of the clients in the window list that the server is * exit-ting. Notes: (1) that the following loop will probably attempt to * disconnect clients multiple times because one client may have multiple * windows: The first disconnect will fail; subsequent will return errors * that are ignored. (2) The final window to be disconnected will be the * background window, thus close all of the servers message queues. */ for (wnd = fe->be.topwnd; wnd; wnd = wnd->below) { (void)nxmu_disconnect(wnd->conn); } } /**************************************************************************** * Name: nxmu_blocked ****************************************************************************/ static inline void nxmu_blocked(FAR struct nxbe_window_s *wnd, FAR void *arg) { struct nxclimsg_blocked_s outmsg; int ret; outmsg.msgid = NX_CLIMSG_BLOCKED; outmsg.wnd = wnd; outmsg.arg = arg; ret = nxmu_sendclient(wnd->conn, &outmsg, sizeof(struct nxclimsg_blocked_s)); if (ret < 0) { gdbg("nxmu_sendclient failed: %d\n", errno); } } /**************************************************************************** * Name: nxmu_setup ****************************************************************************/ static inline int nxmu_setup(FAR const char *mqname, FAR NX_DRIVERTYPE *dev, FAR struct nxfe_state_s *fe) { struct mq_attr attr; int ret; memset(fe, 0, sizeof(struct nxfe_state_s)); /* Configure the framebuffer/LCD device */ ret = nxbe_configure(dev, &fe->be); if (ret < 0) { gdbg("nxbe_configure failed: %d\n", -ret); errno = -ret; return ERROR; } #if CONFIG_FB_CMAP ret = nxbe_colormap(dev); if (ret < 0) { gdbg("nxbe_colormap failed: %d\n", -ret); errno = -ret; return ERROR; } #endif /* CONFIG_FB_CMAP */ /* Initialize the non-NULL elements of the server connection structure. * Oddly, this strcture represents the connection between the server and * itself. * * Open the incoming server MQ. The server receives messages on the * background window's incoming message queue. */ attr.mq_maxmsg = CONFIG_NX_MXSERVERMSGS; attr.mq_msgsize = NX_MXSVRMSGLEN; attr.mq_flags = 0; fe->conn.crdmq = mq_open(mqname, O_RDONLY|O_CREAT, 0666, &attr); if (fe->conn.crdmq == (mqd_t)-1) { gdbg("mq_open(%s) failed: %d\n", mqname, errno); return ERROR; /* mq_open sets errno */ } /* NOTE that the outgoing client MQ (cwrmq) is not initialized. The * background window never initiates messages. */ /* Open the outgoing server MQ. This is used to send messages to the * background window which will, of course, be received and handled by * the server message loop. */ fe->conn.swrmq = mq_open(mqname, O_WRONLY); if (fe->conn.swrmq == (mqd_t)-1) { gdbg("mq_open(%s) failed: %d\n", mqname, errno); mq_close(fe->conn.crdmq); return ERROR; /* mq_open sets errno */ } /* The server is now "connected" to itself via the background window */ fe->conn.state = NX_CLISTATE_CONNECTED; /* Initialize the non-NULL elements of the background window */ fe->be.bkgd.conn = &fe->conn; fe->be.bkgd.be = (FAR struct nxbe_state_s*)fe; fe->be.bkgd.bounds.pt2.x = fe->be.vinfo.xres - 1; fe->be.bkgd.bounds.pt2.y = fe->be.vinfo.yres - 1; /* Complete initialization of the server state structure. The * window list contains only one element: The background window * with nothing else above or below it */ fe->be.topwnd = &fe->be.bkgd; /* Initialize the mouse position */ #ifdef CONFIG_NX_MOUSE nxmu_mouseinit(fe->be.vinfo.xres, fe->be.vinfo.yres); #endif return OK; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: nx_runinstance * * Description: * This is the server entry point. It does not return; the calling thread * is dedicated to supporting NX server. * * NOTE that multiple instances of the NX server may run at the same time, * each with different callback and message queue names. * * Input Parameters: * mqname - The name for the server incoming message queue * dev - Vtable "object" of the framebuffer/LCD "driver" to use * * Return: * This function usually does not return. If it does return, it will * return ERROR and errno will be set appropriately. * ****************************************************************************/ int nx_runinstance(FAR const char *mqname, FAR NX_DRIVERTYPE *dev) { struct nxfe_state_s fe; FAR struct nxsvrmsg_s *msg; uint8_t buffer[NX_MXSVRMSGLEN]; int nbytes; int ret; /* Initialization *********************************************************/ /* Sanity checking */ #ifdef CONFIG_DEBUG if (!mqname || !dev) { errno = EINVAL; return ERROR; } #endif /* Initialize and configure the server */ ret = nxmu_setup(mqname, dev, &fe); if (ret < 0) { return ret; /* nxmu_setup sets errno */ } /* Produce the initial, background display */ nxbe_redraw(&fe.be, &fe.be.bkgd, &fe.be.bkgd.bounds); /* Message Loop ***********************************************************/ /* Then loop forever processing incoming messages */ for (;;) { /* Receive the next server message */ nbytes = mq_receive(fe.conn.crdmq, buffer, NX_MXSVRMSGLEN, 0); if (nbytes < 0) { if (errno != EINTR) { gdbg("mq_receive failed: %d\n", errno); goto errout; /* mq_receive sets errno */ } continue; } /* Dispatch the message appropriately */ DEBUGASSERT(nbytes >= sizeof(struct nxsvrmsg_s)); msg = (FAR struct nxsvrmsg_s *)buffer; gvdbg("Received opcode=%d nbytes=%d\n", msg->msgid, nbytes); switch (msg->msgid) { /* Messages sent from clients to the NX server *********************/ case NX_SVRMSG_CONNECT: /* Establish connection with new NX server client */ { FAR struct nxsvrmsg_s *connmsg = (FAR struct nxsvrmsg_s *)buffer; nxmu_connect(connmsg->conn); } break; case NX_SVRMSG_DISCONNECT: /* Tear down connection with terminating client */ { FAR struct nxsvrmsg_s *disconnmsg = (FAR struct nxsvrmsg_s *)buffer; nxmu_disconnect(disconnmsg->conn); } break; case NX_SVRMSG_OPENWINDOW: /* Create a new window */ { FAR struct nxsvrmsg_openwindow_s *openmsg = (FAR struct nxsvrmsg_openwindow_s *)buffer; nxmu_openwindow(&fe.be, openmsg->wnd); } break; case NX_SVRMSG_CLOSEWINDOW: /* Close an existing window */ { FAR struct nxsvrmsg_closewindow_s *closemsg = (FAR struct nxsvrmsg_closewindow_s *)buffer; nxbe_closewindow(closemsg->wnd); } break; case NX_SVRMSG_BLOCKED: /* Block messsages to a window */ { FAR struct nxsvrmsg_blocked_s *blocked = (FAR struct nxsvrmsg_blocked_s *)buffer; nxmu_blocked(blocked->wnd, blocked->arg); } break; case NX_SVRMSG_REQUESTBKGD: /* Give access to the background window */ { FAR struct nxsvrmsg_requestbkgd_s *rqbgmsg = (FAR struct nxsvrmsg_requestbkgd_s *)buffer; nxmu_requestbkgd(rqbgmsg->conn, &fe.be, rqbgmsg->cb, rqbgmsg->arg); } break; case NX_SVRMSG_RELEASEBKGD: /* End access to the background window */ { nxmu_releasebkgd(&fe); } break; case NX_SVRMSG_SETPOSITION: /* Change window position */ { FAR struct nxsvrmsg_setposition_s *setposmsg = (FAR struct nxsvrmsg_setposition_s *)buffer; nxbe_setposition(setposmsg->wnd, &setposmsg->pos); } break; case NX_SVRMSG_SETSIZE: /* Change window size */ { FAR struct nxsvrmsg_setsize_s *setsizemsg = (FAR struct nxsvrmsg_setsize_s *)buffer; nxbe_setsize(setsizemsg->wnd, &setsizemsg->size); } break; case NX_SVRMSG_GETPOSITION: /* Get the window size/position */ { FAR struct nxsvrmsg_getposition_s *getposmsg = (FAR struct nxsvrmsg_getposition_s *)buffer; nxfe_reportposition(getposmsg->wnd); } break; case NX_SVRMSG_RAISE: /* Move the window to the top of the display */ { FAR struct nxsvrmsg_raise_s *raisemsg = (FAR struct nxsvrmsg_raise_s *)buffer; nxbe_raise(raisemsg->wnd); } break; case NX_SVRMSG_LOWER: /* Lower the window to the bottom of the display */ { FAR struct nxsvrmsg_lower_s *lowermsg = (FAR struct nxsvrmsg_lower_s *)buffer; nxbe_lower(lowermsg->wnd); } break; case NX_SVRMSG_SETPIXEL: /* Set a single pixel in the window with a color */ { FAR struct nxsvrmsg_setpixel_s *setmsg = (FAR struct nxsvrmsg_setpixel_s *)buffer; nxbe_setpixel(setmsg->wnd, &setmsg->pos, setmsg->color); } break; case NX_SVRMSG_FILL: /* Fill a rectangular region in the window with a color */ { FAR struct nxsvrmsg_fill_s *fillmsg = (FAR struct nxsvrmsg_fill_s *)buffer; nxbe_fill(fillmsg->wnd, &fillmsg->rect, fillmsg->color); } break; case NX_SVRMSG_GETRECTANGLE: /* Get a rectangular region from the window */ { FAR struct nxsvrmsg_getrectangle_s *getmsg = (FAR struct nxsvrmsg_getrectangle_s *)buffer; nxbe_getrectangle(getmsg->wnd, &getmsg->rect, getmsg->plane, getmsg->dest, getmsg->deststride); if (getmsg->sem_done) { sem_post(getmsg->sem_done); } } break; case NX_SVRMSG_FILLTRAP: /* Fill a trapezoidal region in the window with a color */ { FAR struct nxsvrmsg_filltrapezoid_s *trapmsg = (FAR struct nxsvrmsg_filltrapezoid_s *)buffer; nxbe_filltrapezoid(trapmsg->wnd, &trapmsg->clip, &trapmsg->trap, trapmsg->color); } break; case NX_SVRMSG_MOVE: /* Move a rectangular region within the window */ { FAR struct nxsvrmsg_move_s *movemsg = (FAR struct nxsvrmsg_move_s *)buffer; nxbe_move(movemsg->wnd, &movemsg->rect, &movemsg->offset); } break; case NX_SVRMSG_BITMAP: /* Copy a rectangular bitmap into the window */ { FAR struct nxsvrmsg_bitmap_s *bmpmsg = (FAR struct nxsvrmsg_bitmap_s *)buffer; nxbe_bitmap(bmpmsg->wnd, &bmpmsg->dest, bmpmsg->src, &bmpmsg->origin, bmpmsg->stride); if (bmpmsg->sem_done) { sem_post(bmpmsg->sem_done); } } break; case NX_SVRMSG_SETBGCOLOR: /* Set the color of the background */ { FAR struct nxsvrmsg_setbgcolor_s *bgcolormsg = (FAR struct nxsvrmsg_setbgcolor_s *)buffer; nxgl_colorcopy(fe.be.bgcolor, bgcolormsg->color); nxbe_fill(&fe.be.bkgd, &fe.be.bkgd.bounds, bgcolormsg->color); } break; #ifdef CONFIG_NX_MOUSE case NX_SVRMSG_MOUSEIN: /* New mouse report from mouse client */ { FAR struct nxsvrmsg_mousein_s *mousemsg = (FAR struct nxsvrmsg_mousein_s *)buffer; nxmu_mousein(&fe, &mousemsg->pt, mousemsg->buttons); } break; #endif #ifdef CONFIG_NX_KBD case NX_SVRMSG_KBDIN: /* New keyboard report from keyboard client */ { FAR struct nxsvrmsg_kbdin_s *kbdmsg = (FAR struct nxsvrmsg_kbdin_s *)buffer; nxmu_kbdin(&fe, kbdmsg->nch, kbdmsg->ch); } break; #endif /* Messages sent to the backgound window ***************************/ case NX_CLIMSG_REDRAW: /* Re-draw the background window */ { FAR struct nxclimsg_redraw_s *redraw = (FAR struct nxclimsg_redraw_s *)buffer; DEBUGASSERT(redraw->wnd == &fe.be.bkgd); gvdbg("Re-draw background rect={(%d,%d),(%d,%d)}\n", redraw->rect.pt1.x, redraw->rect.pt1.y, redraw->rect.pt2.x, redraw->rect.pt2.y); nxbe_fill(&fe.be.bkgd, &redraw->rect, fe.be.bgcolor); } break; case NX_CLIMSG_MOUSEIN: /* Ignored */ case NX_CLIMSG_KBDIN: break; case NX_CLIMSG_CONNECTED: /* Shouldn't happen */ case NX_CLIMSG_DISCONNECTED: default: gdbg("Unrecognized command: %d\n", msg->msgid); break; } } errout: nxmu_shutdown(&fe); return OK; }