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/*
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* GraphLCD driver library
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*
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* image.c - Image output device
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* Output goes to a image file instead of LCD.
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*
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* This file is released under the GNU General Public License. Refer
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* to the COPYING file distributed with this package.
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*
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* (c) 2004 Andreas Regel <andreas.regel AT powarman.de>
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*/
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#include <stdio.h>
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#include <syslog.h>
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#include "common.h"
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#include "config.h"
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#include "image.h"
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namespace GLCD
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{
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cDriverImage::cDriverImage(cDriverConfig * config)
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: config(config)
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{
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oldConfig = new cDriverConfig(*config);
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}
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cDriverImage::~cDriverImage()
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{
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delete oldConfig;
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}
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int cDriverImage::Init()
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{
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width = config->width;
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if (width <= 0)
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width = 240;
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height = config->height;
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if (height <= 0)
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height = 128;
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lineSize = (width + 7) / 8;
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for (unsigned int i = 0; i < config->options.size(); i++)
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{
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if (config->options[i].name == "")
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{
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}
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}
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newLCD = new unsigned char[lineSize * height];
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if (newLCD)
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memset(newLCD, 0, lineSize * height);
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oldLCD = new unsigned char[lineSize * height];
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if (oldLCD)
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memset(oldLCD, 0, lineSize * height);
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counter = 0;
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*oldConfig = *config;
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// clear display
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Clear();
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syslog(LOG_INFO, "%s: image driver initialized.\n", config->name.c_str());
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return 0;
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}
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int cDriverImage::DeInit()
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{
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if (newLCD)
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delete[] newLCD;
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if (oldLCD)
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delete[] oldLCD;
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return 0;
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}
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int cDriverImage::CheckSetup()
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{
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if (config->width != oldConfig->width ||
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config->height != oldConfig->height)
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{
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DeInit();
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Init();
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return 0;
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}
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if (config->upsideDown != oldConfig->upsideDown ||
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config->invert != oldConfig->invert)
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{
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oldConfig->upsideDown = config->upsideDown;
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oldConfig->invert = config->invert;
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return 1;
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}
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return 0;
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}
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void cDriverImage::Clear()
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{
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memset(newLCD, 0, lineSize * height);
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}
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void cDriverImage::Set8Pixels(int x, int y, unsigned char data)
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{
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if (x >= width || y >= height)
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return;
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if (!config->upsideDown)
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{
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// normal orientation
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newLCD[lineSize * y + x / 8] |= data;
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}
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else
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{
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// upside down orientation
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x = width - 1 - x;
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y = height - 1 - y;
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newLCD[lineSize * y + x / 8] |= ReverseBits(data);
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}
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}
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void cDriverImage::Refresh(bool refreshAll)
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{
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int i;
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bool refresh;
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char fileName[256];
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char str[32];
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FILE * fp;
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unsigned char c;
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refresh = false;
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if (CheckSetup() > 0)
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refresh = true;
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for (i = 0; i < lineSize * height; i++)
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{
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if (newLCD[i] != oldLCD[i])
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{
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refresh = true;
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break;
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}
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}
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if (refresh)
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{
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sprintf(fileName, "%s/%s%05d.%s", "/tmp", "lcd", counter, "pbm");
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fp = fopen(fileName, "wb");
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if (fp)
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{
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sprintf(str, "P4\n%d %d\n", width, height);
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fwrite(str, strlen(str), 1, fp);
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for (i = 0; i < lineSize * height; i++)
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{
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c = newLCD[i] ^ (config->invert ? 0xff : 0x00);
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fwrite(&c, 1, 1, fp);
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oldLCD[i] = newLCD[i];
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}
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fclose(fp);
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}
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counter++;
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if (counter > 99999)
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counter = 0;
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}
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}
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} // end of namespace
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