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