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/*
* GraphLCD graphics library
*
* pbm.c - PBM file loading and saving
*
* This file is released under the GNU General Public License. Refer
* to the COPYING file distributed with this package.
*
* (c) 2006 Andreas Regel <andreas.regel AT powarman.de>
*/
#include <stdio.h>
#include <stdint.h>
#include <syslog.h>
#include <cstdlib>
#include <cstring>
#include "bitmap.h"
#include "pbm.h"
#include "image.h"
namespace GLCD
{
cPBMFile::cPBMFile()
{
}
cPBMFile::~cPBMFile()
{
}
bool cPBMFile::Load(cImage & image, const std::string & fileName)
{
FILE * pbmFile;
char str[32];
int i;
int ch;
int w;
int h;
pbmFile = fopen(fileName.c_str(), "rb");
if (!pbmFile)
return false;
i = 0;
while ((ch = getc(pbmFile)) != EOF && i < 31)
{
if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')
break;
str[i] = ch;
i++;
}
if (ch == EOF)
{
fclose(pbmFile);
return false;
}
str[i] = 0;
if (strcmp(str, "P4") != 0)
return false;
while ((ch = getc(pbmFile)) == '#')
{
while ((ch = getc(pbmFile)) != EOF)
{
if (ch == '\n' || ch == '\r')
break;
}
}
if (ch == EOF)
{
fclose(pbmFile);
return false;
}
i = 0;
str[i] = ch;
i += 1;
while ((ch = getc(pbmFile)) != EOF && i < 31)
{
if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')
break;
str[i] = ch;
i++;
}
if (ch == EOF)
{
fclose(pbmFile);
return false;
}
str[i] = 0;
w = atoi(str);
i = 0;
while ((ch = getc(pbmFile)) != EOF && i < 31)
{
if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')
break;
str[i] = ch;
i++;
}
if (ch == EOF)
{
fclose(pbmFile);
return false;
}
str[i] = 0;
h = atoi(str);
image.Clear();
image.SetWidth(w);
image.SetHeight(h);
image.SetDelay(100);
unsigned char * bmpdata = new unsigned char[h * ((w + 7) / 8)];
if (bmpdata)
{
if (fread(bmpdata, h * ((w + 7) / 8), 1, pbmFile) != 1)
{
delete[] bmpdata;
fclose(pbmFile);
image.Clear();
return false;
}
image.AddBitmap(new cBitmap(w, h, bmpdata));
delete[] bmpdata;
}
else
{
syslog(LOG_ERR, "glcdgraphics: malloc failed (cPBMFile::Load).");
fclose(pbmFile);
return false;
}
fclose(pbmFile);
syslog(LOG_DEBUG, "glcdgraphics: image %s loaded.", fileName.c_str());
return true;
}
bool cPBMFile::Save(cImage & image, const std::string & fileName)
{
FILE * fp;
char str[32];
const cBitmap * bitmap;
if (image.Count() == 1)
{
fp = fopen(fileName.c_str(), "wb");
if (fp)
{
bitmap = image.GetBitmap(0);
if (bitmap)
{
sprintf(str, "P4\n%d %d\n", bitmap->Width(), bitmap->Height());
fwrite(str, strlen(str), 1, fp);
fwrite(bitmap->Data(), bitmap->LineSize() * bitmap->Height(), 1, fp);
}
fclose(fp);
}
}
else
{
uint16_t i;
char tmpStr[256];
for (i = 0; i < image.Count(); i++)
{
sprintf(tmpStr, "%.248s.%05d", fileName.c_str(), i);
fp = fopen(tmpStr, "wb");
if (fp)
{
bitmap = image.GetBitmap(i);
if (bitmap)
{
sprintf(str, "P4\n%d %d\n", bitmap->Width(), bitmap->Height());
fwrite(str, strlen(str), 1, fp);
fwrite(bitmap->Data(), bitmap->LineSize() * bitmap->Height(), 1, fp);
}
fclose(fp);
}
}
}
return true;
}
} // end of namespace
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