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px4-firmware/apps/examples/nximage/nximage_main.c

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/****************************************************************************
* examples/nximage/nximage_main.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 <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>
#ifdef CONFIG_NX_LCDDRIVER
# include <nuttx/lcd/lcd.h>
#else
# include <nuttx/fb.h>
#endif
#include <nuttx/arch.h>
#include <nuttx/nx/nx.h>
#include <nuttx/nx/nxglib.h>
#include <nuttx/nx/nxfonts.h>
#include "nximage.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* If not specified, assume that the hardware supports one video plane */
#ifndef CONFIG_EXAMPLES_NXIMAGE_VPLANE
# define CONFIG_EXAMPLES_NXIMAGE_VPLANE 0
#endif
/* If not specified, assume that the hardware supports one LCD device */
#ifndef CONFIG_EXAMPLES_NXIMAGE_DEVNO
# define CONFIG_EXAMPLES_NXIMAGE_DEVNO 0
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
struct nximage_data_s g_nximage =
{
NULL, /* hnx */
NULL, /* hbkgd */
0, /* xres */
0, /* yres */
false, /* havpos */
{ 0 }, /* sem */
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)
{
FAR NX_DRIVERTYPE *dev;
#if defined(CONFIG_EXAMPLES_NXIMAGE_EXTERNINIT)
/* Use external graphics driver initialization */
message("nximage_initialize: Initializing external graphics device\n");
dev = up_nxdrvinit(CONFIG_EXAMPLES_NXIMAGE_DEVNO);
if (!dev)
{
message("nximage_initialize: up_nxdrvinit failed, devno=%d\n",
CONFIG_EXAMPLES_NXIMAGE_DEVNO);
g_nximage.code = NXEXIT_EXTINITIALIZE;
return ERROR;
}
#elif defined(CONFIG_NX_LCDDRIVER)
int ret;
/* Initialize the LCD device */
message("nximage_initialize: Initializing LCD\n");
ret = up_lcdinitialize();
if (ret < 0)
{
message("nximage_initialize: up_lcdinitialize failed: %d\n", -ret);
g_nximage.code = NXEXIT_LCDINITIALIZE;
return ERROR;
}
/* Get the device instance */
dev = up_lcdgetdev(CONFIG_EXAMPLES_NXIMAGE_DEVNO);
if (!dev)
{
message("nximage_initialize: up_lcdgetdev failed, devno=%d\n", CONFIG_EXAMPLES_NXIMAGE_DEVNO);
g_nximage.code = NXEXIT_LCDGETDEV;
return ERROR;
}
/* Turn the LCD on at 75% power */
(void)dev->setpower(dev, ((3*CONFIG_LCD_MAXPOWER + 3)/4));
#else
int ret;
/* Initialize the frame buffer device */
message("nximage_initialize: Initializing framebuffer\n");
ret = up_fbinitialize();
if (ret < 0)
{
message("nximage_initialize: up_fbinitialize failed: %d\n", -ret);
g_nximage.code = NXEXIT_FBINITIALIZE;
return ERROR;
}
dev = up_fbgetvplane(CONFIG_EXAMPLES_NXIMAGE_VPLANE);
if (!dev)
{
message("nximage_initialize: up_fbgetvplane failed, vplane=%d\n", CONFIG_EXAMPLES_NXIMAGE_VPLANE);
g_nximage.code = NXEXIT_FBGETVPLANE;
return ERROR;
}
#endif
/* Then open NX */
message("nximage_initialize: Open NX\n");
g_nximage.hnx = nx_open(dev);
if (!g_nximage.hnx)
{
message("nximage_initialize: nx_open failed: %d\n", errno);
g_nximage.code = NXEXIT_NXOPEN;
return ERROR;
}
return OK;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nximage_main
*
* Description:
* Main entry pointer. Configures the basic display resources.
*
****************************************************************************/
int nximage_main(int argc, char *argv[])
{
nxgl_mxpixel_t color;
int ret;
/* Initialize NX */
ret = nximage_initialize();
message("nximage_main: NX handle=%p\n", g_nximage.hnx);
if (!g_nximage.hnx || ret < 0)
{
message("nximage_main: Failed to get NX handle: %d\n", errno);
g_nximage.code = NXEXIT_NXOPEN;
goto errout;
}
/* Set the background to the configured background color */
color = nximage_bgcolor();
message("nximage_main: Set background color=%d\n", color);
ret = nx_setbgcolor(g_nximage.hnx, &color);
if (ret < 0)
{
message("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)
{
message("nximage_main: nx_setbgcolor failed: %d\n", errno);
g_nximage.code = NXEXIT_NXREQUESTBKGD;
goto errout_with_nx;
}
/* Wait until we have the screen resolution. We'll have this immediately
* unless we are dealing with the NX server.
*/
while (!g_nximage.havepos)
{
(void)sem_wait(&g_nximage.sem);
}
message("nximage_main: Screen resolution (%d,%d)\n", g_nximage.xres, g_nximage.yres);
/* Now, put up the NuttX logo. */
nximage_image(g_nximage.hbkgd);
/* Release background */
(void)nx_releasebkgd(g_nximage.hbkgd);
/* Close NX */
errout_with_nx:
message("nximage_main: Close NX\n");
nx_close(g_nximage.hnx);
errout:
return g_nximage.code;
}
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