261 lines
7.5 KiB
C
261 lines
7.5 KiB
C
/****************************************************************************
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* examples/nximage/nximage_main.c
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*
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* Copyright (C) 2011, 2015-2017 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 <sys/types.h>
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#include <sys/boardctl.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <time.h>
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#include <string.h>
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#include <sched.h>
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#include <pthread.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#ifdef CONFIG_VNCSERVER
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# include <nuttx/video/vnc.h>
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#endif
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxglib.h>
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#include <nuttx/nx/nxfonts.h>
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#include "nximage.h"
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/****************************************************************************
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* Public Data
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****************************************************************************/
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struct nximage_data_s g_nximage =
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{
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NULL, /* hnx */
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NULL, /* hbkgd */
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false, /* connected */
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0, /* xres */
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0, /* yres */
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false, /* havpos */
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SEM_INITIALIZER(0), /* eventsem */
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NXEXIT_SUCCESS /* exit code */
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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: nximage_initialize
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*
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* Description:
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* Initialize the LCD or framebuffer device (single user mode only), then
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* open NX.
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*
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****************************************************************************/
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static inline int nximage_initialize(void)
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{
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struct sched_param param;
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pthread_t thread;
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int ret;
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/* Set the client task priority */
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param.sched_priority = CONFIG_EXAMPLES_NXIMAGE_CLIENTPRIO;
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ret = sched_setparam(0, ¶m);
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if (ret < 0)
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{
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printf("nximage_initialize: sched_setparam failed: %d\n" , ret);
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return ERROR;
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}
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/* Start the NX server kernel thread */
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ret = boardctl(BOARDIOC_NX_START, 0);
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if (ret < 0)
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{
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printf("nximage_initialize: Failed to start the NX server: %d\n", errno);
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return ERROR;
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}
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/* Connect to the server */
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g_nximage.hnx = nx_connect();
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if (g_nximage.hnx)
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{
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pthread_attr_t attr;
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#ifdef CONFIG_VNCSERVER
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/* Setup the VNC server to support keyboard/mouse inputs */
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ret = vnc_default_fbinitialize(0, g_nximage.hnx);
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if (ret < 0)
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{
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printf("vnc_default_fbinitialize failed: %d\n", ret);
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nx_disconnect(g_nximage.hnx);
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return ERROR;
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}
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#endif
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/* Start a separate thread to listen for server events. This is probably
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* the least efficient way to do this, but it makes this example flow more
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* smoothly.
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*/
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(void)pthread_attr_init(&attr);
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param.sched_priority = CONFIG_EXAMPLES_NXIMAGE_LISTENERPRIO;
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(void)pthread_attr_setschedparam(&attr, ¶m);
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(void)pthread_attr_setstacksize(&attr, CONFIG_EXAMPLES_NXIMAGE_LISTENER_STACKSIZE);
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ret = pthread_create(&thread, &attr, nximage_listener, NULL);
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if (ret != 0)
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{
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printf("nximage_initialize: pthread_create failed: %d\n", ret);
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return ERROR;
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}
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/* Don't return until we are connected to the server */
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while (!g_nximage.connected)
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{
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/* Wait for the listener thread to wake us up when we really
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* are connected.
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*/
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(void)sem_wait(&g_nximage.eventsem);
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}
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}
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else
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{
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printf("nximage_initialize: nx_connect failed: %d\n", errno);
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return ERROR;
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}
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return OK;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nximage_main
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*
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* Description:
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* Main entry pointer. Configures the basic display resources.
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*
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****************************************************************************/
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#ifdef CONFIG_BUILD_KERNEL
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int main(int argc, FAR char *argv[])
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#else
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int nximage_main(int argc, char *argv[])
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#endif
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{
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nxgl_mxpixel_t color;
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int ret;
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/* Initialize NX */
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ret = nximage_initialize();
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printf("nximage_main: NX handle=%p\n", g_nximage.hnx);
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if (!g_nximage.hnx || ret < 0)
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{
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printf("nximage_main: Failed to get NX handle: %d\n", errno);
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g_nximage.code = NXEXIT_INIT;
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goto errout;
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}
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/* Set the background to the configured background color */
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color = nximage_bgcolor();
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printf("nximage_main: Set background color=%u\n", color);
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ret = nx_setbgcolor(g_nximage.hnx, &color);
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if (ret < 0)
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{
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printf("nximage_main: nx_setbgcolor failed: %d\n", errno);
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g_nximage.code = NXEXIT_NXSETBGCOLOR;
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goto errout_with_nx;
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}
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/* Get the background window */
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ret = nx_requestbkgd(g_nximage.hnx, &g_nximagecb, NULL);
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if (ret < 0)
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{
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printf("nximage_main: nx_setbgcolor failed: %d\n", errno);
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g_nximage.code = NXEXIT_NXREQUESTBKGD;
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goto errout_with_nx;
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}
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/* Wait until we have the screen resolution. We'll have this immediately
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* unless we are dealing with the NX server.
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*/
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while (!g_nximage.havepos)
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{
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(void)sem_wait(&g_nximage.eventsem);
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}
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printf("nximage_main: Screen resolution (%d,%d)\n", g_nximage.xres, g_nximage.yres);
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/* Now, put up the NuttX logo and wait a bit so that it visible. */
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nximage_image(g_nximage.hbkgd);
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sleep(5);
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/* Release background */
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(void)nx_releasebkgd(g_nximage.hbkgd);
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/* Close NX */
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errout_with_nx:
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printf("nximage_main: Disconnect from the server\n");
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nx_disconnect(g_nximage.hnx);
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errout:
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return g_nximage.code;
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}
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