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/*
* GraphLCD driver library
*
* image.c - Image output device
* Output goes to a image file instead of LCD.
*
* This file is released under the GNU General Public License. Refer
* to the COPYING file distributed with this package.
*
* (c) 2004-2010 Andreas Regel <andreas.regel AT powarman.de>
* (c) 2010-2011 Wolfgang Astleitner <mrwastl AT users sourceforge net>
Andreas 'randy' Weinberger
*/
#include <stdio.h>
#include <syslog.h>
#include <cstring>
#include "common.h"
#include "config.h"
#include "image.h"
namespace GLCD
{
cDriverImage::cDriverImage(cDriverConfig * config)
: cDriver(config)
{
}
cDriverImage::~cDriverImage()
{
DeInit();
}
int cDriverImage::Init()
{
width = config->width;
if (width <= 0)
width = 240;
height = config->height;
if (height <= 0)
height = 128;
lineSize = (width + 7) / 8;
for (unsigned int i = 0; i < config->options.size(); i++)
{
if (config->options[i].name == "")
{
}
}
// newLCD = new unsigned char[lineSize * height];
newLCD = new uint32_t[width * height];
if (newLCD)
memset(newLCD, 0, width * height);
oldLCD = new uint32_t[width * height];
if (oldLCD)
memset(oldLCD, 0, width * height);
counter = 0;
*oldConfig = *config;
// clear display
Clear();
syslog(LOG_INFO, "%s: image driver initialized.\n", config->name.c_str());
return 0;
}
int cDriverImage::DeInit()
{
if (newLCD)
{
delete[] newLCD;
newLCD = 0;
}
if (oldLCD)
{
delete[] oldLCD;
oldLCD = 0;
}
return 0;
}
int cDriverImage::CheckSetup()
{
if (config->width != oldConfig->width ||
config->height != oldConfig->height)
{
DeInit();
Init();
return 0;
}
if (config->upsideDown != oldConfig->upsideDown ||
config->invert != oldConfig->invert)
{
oldConfig->upsideDown = config->upsideDown;
oldConfig->invert = config->invert;
return 1;
}
return 0;
}
void cDriverImage::Clear()
{
memset(newLCD, 0, lineSize * height);
}
#if 0
void cDriverImage::Set8Pixels(int x, int y, unsigned char data)
{
if (x >= width || y >= height)
return;
if (!config->upsideDown)
{
// normal orientation
newLCD[lineSize * y + x / 8] |= data;
}
else
{
// upside down orientation
x = width - 1 - x;
y = height - 1 - y;
newLCD[lineSize * y + x / 8] |= ReverseBits(data);
}
}
#endif
void cDriverImage::SetPixel(int x, int y, uint32_t data)
{
if (x >= width || y >= height)
return;
int cols = (width + 7 ) >> 3;
int pos = x % 8;
if (config->upsideDown)
{
x = width - 1 - x;
y = height - 1 - y;
} else {
pos = 7 - pos; // reverse bit position
}
if (data == GRAPHLCD_White)
newLCD[y * cols + (x >> 3)] |= ( 1 << pos );
else
newLCD[y * cols + (x >> 3)] &= ( 0xFF ^ ( 1 << pos) );
}
void cDriverImage::Refresh(bool refreshAll)
{
int i;
bool refresh;
char fileName[256];
char str[32];
FILE * fp;
unsigned char c;
refresh = false;
if (CheckSetup() > 0)
refresh = true;
for (i = 0; i < lineSize * height; i++)
{
if (newLCD[i] != oldLCD[i])
{
refresh = true;
break;
}
}
if (refresh)
{
sprintf(fileName, "%s/%s%05d.%s", "/tmp", "lcd", counter, "pbm");
fp = fopen(fileName, "wb");
if (fp)
{
sprintf(str, "P4\n%d %d\n", width, height);
fwrite(str, strlen(str), 1, fp);
for (i = 0; i < lineSize * height; i++)
{
c = newLCD[i] ^ (config->invert ? 0xff : 0x00);
fwrite(&c, 1, 1, fp);
oldLCD[i] = newLCD[i];
}
fclose(fp);
}
counter++;
if (counter > 99999)
counter = 0;
}
}
} // end of namespace
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