/**************************************************************************** * graphics/nxmu/nxmu_start.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nxmu.h" #ifdef CONFIG_VNCSERVER # include #endif /**************************************************************************** * Private Data ****************************************************************************/ static bool g_nxserver_started[CONFIG_NX_NDISPLAYS]; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: nx_server * * Description: * NX server thread. This is the entry point into the server kernel * thread that serializes the multi-threaded accesses to the display. * * Input Parameters: * Standard task start-up parameters (none of which are used) * * Returned Value: * This function does not normally return but may exit with EXIT_FAILURE * under certain error conditions. * ****************************************************************************/ static int nx_server(int argc, char *argv[]) { FAR NX_DRIVERTYPE *dev; int ret; #if defined(CONFIG_NXSTART_EXTERNINIT) /* Use external graphics driver initialization */ dev = board_graphics_setup(CONFIG_NXSTART_DEVNO); if (!dev) { gerr("ERROR: board_graphics_setup failed, devno=%d\n", CONFIG_NXSTART_DEVNO); return EXIT_FAILURE; } #elif defined(CONFIG_NX_LCDDRIVER) /* Initialize the LCD device */ ret = board_lcd_initialize(); if (ret < 0) { gerr("ERROR: board_lcd_initialize failed: %d\n", ret); return EXIT_FAILURE; } /* Get the device instance */ dev = board_lcd_getdev(CONFIG_NXSTART_DEVNO); if (!dev) { gerr("ERROR: board_lcd_getdev failed, devno=%d\n", CONFIG_NXSTART_DEVNO); return EXIT_FAILURE; } /* Turn the LCD on at 75% power */ dev->setpower(dev, ((3 * CONFIG_LCD_MAXPOWER + 3) / 4)); #else /* CONFIG_NX_LCDDRIVER */ # ifdef CONFIG_VNCSERVER /* Initialize the VNC server */ int display; /* Get display parameters from the command line */ display = atoi(argv[1]); ret = vnc_fb_register(display); if (ret < 0) { gerr("ERROR: vnc_fb_register() failed: %d\n", ret); } # else /* CONFIG_VNCSERVER */ /* Initialize the frame buffer device. */ int display; int plane; /* Get display parameters from the command line */ display = atoi(argv[1]); plane = atoi(argv[2]); ret = up_fbinitialize(display); if (ret < 0) { gerr("ERROR: up_fbinitialize failed: %d\n", ret); return EXIT_FAILURE; } dev = up_fbgetvplane(display, plane); if (!dev) { gerr("ERROR: up_fbgetvplane failed, vplane=%d\n", plane); return EXIT_FAILURE; } # endif /* CONFIG_VNCSERVER */ #endif /* CONFIG_NX_LCDDRIVER */ /* Then start the server (nx_run does not normally return) */ ret = nx_run(dev); ginfo("nx_run returned: %d\n", ret); UNUSED(ret); return EXIT_FAILURE; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: nxmu_start * * Description: * nxmu_start() provides a wrapper function to simplify and standardize * the starting of the NX server. * * nxmu_start() can be called (indirectly) from applications via the * boardctl() interface with the BOARDIOC_NX_START command. * * Input Parameters: * display - Display number served by this NXMU instance. * plane - Plane number to use for display info * * Returned Value: * Zero (OK) is returned on success. This indicates that the NX server * has been successfully started, is running, and waiting to accept * connections from NX clients. * * A negated errno value is returned on failure. The errno value indicates * the nature of the failure. * ****************************************************************************/ int nxmu_start(int display, int plane) { DEBUGASSERT((unsigned)display < CONFIG_NX_NDISPLAYS && (unsigned)plane < CONFIG_NX_NPLANES); /* Do nothing is the server has already been started */ if (!g_nxserver_started[display]) { FAR char display_str[8]; FAR char plane_str[8]; int server; FAR char * const argv[3] = { (FAR char * const)display_str, (FAR char * const)plane_str, NULL }; /* Start the server kernel thread */ snprintf(display_str, 8, "%d", display); snprintf(plane_str, 8, "%d", plane); ginfo("Starting server task\n"); server = kthread_create("NX Server", CONFIG_NXSTART_SERVERPRIO, CONFIG_NXSTART_SERVERSTACK, nx_server, argv); if (server < 0) { gerr("ERROR: Failed to create nx_server kernel thread: %d\n", server); return server; } g_nxserver_started[display] = true; /* Wait a bit to make sure that the server get started. NOTE that * this operation cannot be done from the IDLE thread! */ nxsig_usleep(50 * 1000); } return OK; }