/*

 * GraphLCD tool showpic

 *

 * showpic.c  -  a tool to show image files in GLCD format on a LCD

 *

 * based on graphlcd plugin 0.1.1 for the Video Disc Recorder

 *  (c) 2001-2004 Carsten Siebholz <c.siebholz AT t-online.de>

 *  

 * This file is released under the GNU General Public License. Refer

 * to the COPYING file distributed with this package.

 *

 * (c) 2004 Andreas Regel <andreas.regel AT powarman.de>

 */

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <getopt.h>

#include <dlfcn.h>

#include <unistd.h>

#include <syslog.h>

#include <signal.h>

#include <string>

#include <glcdgraphics/bitmap.h>

#include <glcdgraphics/glcd.h>

#include <glcdgraphics/image.h>

#include <glcddrivers/config.h>

#include <glcddrivers/driver.h>

#include <glcddrivers/drivers.h>

static const char *prgname = "showpic";

static const char *version = "0.1.2";

static const int kDefaultSleepMs = 100;

static const char * kDefaultConfigFile = "/etc/graphlcd.conf";

static volatile bool stopProgramm = false;

static void sighandler(int signal)

{

	switch (signal)

	{

		case SIGINT:

		case SIGQUIT:

		case SIGTERM:

			stopProgramm = true;

	}

}

void usage()

{

	fprintf(stdout, "\n");

	fprintf(stdout, "%s v%s\n", prgname, version);

	fprintf(stdout, "%s is a tool to show an image on a LCD.\n", prgname);

	fprintf(stdout, "The image must be in a special format (*.glcd).\n");

	fprintf(stdout, "You can create such images with the convpic tool.\n\n");

	fprintf(stdout, "  Usage: %s [-c CONFIGFILE] [-d DISPLAY] [-s SLEEP] [-uie] file [more files]\n\n", prgname);

	fprintf(stdout, "  -c  --config      specifies the location of the config file\n");

	fprintf(stdout, "                    (default: /etc/graphlcd.conf)\n");

	fprintf(stdout, "  -d  --display     specifies the output display (default is the first one)\n");

	fprintf(stdout, "  -u  --upsidedown  rotates the output by 180 degrees (default: no)\n");

	fprintf(stdout, "  -i  --invert      inverts the output (default: no)\n");

	fprintf(stdout, "  -e  --endless     show all images in endless loop (default: no)\n");

	fprintf(stdout, "  -s  --sleep       set sleeptime between two images [ms] (default: %d ms)\n", kDefaultSleepMs);

	fprintf(stdout, "  -b  --brightness  set brightness for display if driver support it [%%]\n");

	fprintf(stdout, "                    (default: config file value)\n");

	fprintf(stdout, "\n" );

	fprintf(stdout, "  examples: %s -c /etc/graphlcd.conf vdr-logo.glcd\n", prgname);

	fprintf(stdout, "            %s -c /etc/graphlcd.conf -d LCD_T6963 -u -i vdr-logo.glcd\n", prgname);

	fprintf(stdout, "\n" );

}

int main(int argc, char *argv[])

{

	static struct option long_options[] =

	{

		{"config",     required_argument, NULL, 'c'},

		{"display",    required_argument, NULL, 'd'},

		{"sleep",      required_argument, NULL, 's'},

		{"endless",          no_argument, NULL, 'e'},

		{"upsidedown",       no_argument, NULL, 'u'},

		{"invert",           no_argument, NULL, 'i'},

		{"brightness", required_argument, NULL, 'b'},

		{NULL}

	};

	std::string configName = "";

	std::string displayName = "";

	bool upsideDown = false;

	bool invert = false;

	int brightness = -1;

	bool delay = false;

	int sleepMs = 100;

	bool endless = false;

	unsigned int displayNumber = 0;

	int c, option_index = 0;

	while ((c = getopt_long(argc, argv, "c:d:s:euib:", long_options, &option_index)) != -1)

	{

		switch(c)

		{

			case 'c':

				configName = optarg;

				break;

			case 'd':

				displayName = optarg;

				break;

			case 'u':

				upsideDown = true;

				break;

			case 'i':

				invert = true;

				break;

			case 's':

				sleepMs = atoi(optarg);

				delay = true;

				break;

			case 'e':

				endless = true;

				break;

			case 'b':

				brightness = atoi(optarg);

				if (brightness < 0) brightness = 0;

				if (brightness > 100) brightness = 100;

				break;

			default:

				usage();

				return 1;

		}

	}

	if (configName.length() == 0)

	{

		configName = kDefaultConfigFile;

		syslog(LOG_INFO, "Error: No config file specified, using default (%s).\n", configName.c_str());

	}

	if (GLCD::Config.Load(configName) == false)

	{

		fprintf(stdout, "Error loading config file!\n");

		return 2;

	}

	if (GLCD::Config.driverConfigs.size() > 0)

	{

		if (displayName.length() > 0)

		{

			for (displayNumber = 0; displayNumber < GLCD::Config.driverConfigs.size(); displayNumber++)

			{

				if (GLCD::Config.driverConfigs[displayNumber].name == displayName)

					break;

			}

			if (displayNumber == GLCD::Config.driverConfigs.size())

			{

				fprintf(stdout, "ERROR: Specified display %s not found in config file!\n", displayName.c_str());

				return 3;

			}

		}

		else

		{

			fprintf(stdout, "WARNING: No display specified, using first one.\n");

			displayNumber = 0;

		}

	}

	else

	{

		fprintf(stdout, "ERROR: No displays specified in config file!\n");

		return 4;

	}

	if (optind == argc)

	{

		usage();

		fprintf(stderr, "ERROR: You have to specify the image\n");

		return 5;

	}

	GLCD::Config.driverConfigs[displayNumber].upsideDown ^= upsideDown;

	GLCD::Config.driverConfigs[displayNumber].invert ^= invert;

	if (brightness != -1)

		GLCD::Config.driverConfigs[displayNumber].brightness = brightness;

	GLCD::cDriver * lcd = GLCD::CreateDriver(GLCD::Config.driverConfigs[displayNumber].id, &GLCD::Config.driverConfigs[displayNumber]);

	if (!lcd)

	{

		fprintf(stderr, "ERROR: Failed creating display object %s\n", displayName.c_str());

		return 6;

	}

	if (lcd->Init() != 0)

	{

		fprintf(stderr, "ERROR: Failed initializing display %s\n", displayName.c_str());

		delete lcd;

		return 7;

	}

	lcd->SetBrightness(GLCD::Config.driverConfigs[displayNumber].brightness);

	printf("keys = %d\n",lcd->GetKey());

	signal(SIGINT, sighandler);

	signal(SIGQUIT, sighandler);

	signal(SIGTERM, sighandler);

	signal(SIGHUP, sighandler);

	const GLCD::cBitmap * bitmap;

	GLCD::cImage image;

	GLCD::cGLCDFile glcd;

	int optFile;

	std::string picFile;

	optFile = optind;

	while (optFile < argc && !stopProgramm)

	{

		picFile = argv[optFile++];

		if (glcd.Load(image, picFile) == false)

		{

			fprintf(stderr, "ERROR: Failed loading file %s\n", picFile.c_str());

			return 8;

		}

		if (delay)

			image.SetDelay(sleepMs);

		while ((bitmap = image.GetBitmap()) != NULL && !stopProgramm)

		{

			lcd->SetScreen(bitmap->Data(), bitmap->Width(), bitmap->Height(), bitmap->LineSize());

			printf("keys = %d\n",lcd->GetKey());

			lcd->Refresh(true);

			if (image.Next(0)) // Select next image

			{

				usleep(image.Delay() * 1000);

			}

			else if (endless && argc == (optind + 1)) // Endless and one and only image

			{

				image.First(0);

				usleep(image.Delay() * 1000);

			}

			else 

				break;

		}

		if (optFile < argc || endless)

			usleep(sleepMs * 1000);

		if (optFile >= argc && endless)

			optFile = optind;

	}

	lcd->DeInit();

	delete lcd;

	return 0;

}