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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) 2006-2010 Andreas Regel <andreas.regel AT powarman.de>
* (c) 2010-2013 Wolfgang Astleitner <mrwastl AT users sourceforge net>
* Andreas 'randy' Weinberger
*/
#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_raw = new unsigned char[h * ((w + 7) / 8)];
uint32_t * bmpdata = new uint32_t[h * w];
if (bmpdata && bmpdata_raw)
{
if (fread(bmpdata_raw, h * ((w + 7) / 8), 1, pbmFile) != 1)
{
delete[] bmpdata;
fclose(pbmFile);
image.Clear();
return false;
}
int colsize = (w+7)/8;
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
if ( bmpdata_raw[j*colsize + (i>>3)] & (1 << (7-(i%8))) ) {
bmpdata[j*w+i] = cColor::Black;
} else {
bmpdata[j*w+i] = cColor::White;
}
}
}
delete [] bmpdata_raw;
cBitmap * b = new cBitmap(w, h, bmpdata);
b->SetMonochrome(true);
//image.AddBitmap(new cBitmap(width, height, bmpdata));
image.AddBitmap(b);
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;
unsigned char* rawdata = NULL;
int rawdata_size = 0;
const uint32_t * bmpdata = NULL;
if (image.Count() == 1)
{
fp = fopen(fileName.c_str(), "wb");
if (fp)
{
bitmap = image.GetBitmap(0);
rawdata_size = ((bitmap->Width() + 7) / 8) * bitmap->Height();
rawdata = new unsigned char[ rawdata_size ];
bmpdata = bitmap->Data();
if (bitmap && rawdata && bmpdata)
{
memset(rawdata, 0, rawdata_size );
for (int y = 0; y < bitmap->Height(); y++) {
int startpos = y * ((bitmap->Width() + 7) / 8);
for (int x = 0; x < bitmap->Width(); x++) {
if (bmpdata[ y * bitmap->Width() + x ] == cColor::White) {
rawdata[ startpos + (x / 8) ] |= (1 << ( 7 - ( x % 8 ) ));
}
}
}
sprintf(str, "P4\n%d %d\n", bitmap->Width(), bitmap->Height());
fwrite(str, strlen(str), 1, fp);
fwrite(rawdata, rawdata_size, 1, fp);
}
fclose(fp);
delete[] rawdata;
rawdata = NULL;
}
}
else
{
uint16_t i;
char tmpStr[256];
size_t pos = fileName.find_last_of('.');
std::string fileExt = "";
std::string fileBase = fileName;
if (pos != std::string::npos) {
fileExt = fileName.substr(pos);
fileBase = fileName.substr(0, fileName.length() - fileExt.length());
}
for (i = 0; i < image.Count(); i++)
{
sprintf(tmpStr, "%.244s-%05d%s", fileBase.c_str(), i, fileExt.c_str());
fp = fopen(tmpStr, "wb");
if (fp)
{
bitmap = image.GetBitmap(i);
rawdata_size = ((bitmap->Width() + 7) / 8) * bitmap->Height();
rawdata = new unsigned char[ rawdata_size ];
bmpdata = bitmap->Data();
if (bitmap && rawdata && bmpdata)
{
memset(rawdata, 0, rawdata_size );
for (int y = 0; y < bitmap->Height(); y++) {
int startpos = y * ((bitmap->Width() + 7) / 8);
for (int x = 0; x < bitmap->Width(); x++) {
if (bmpdata[ y * bitmap->Width() + x ] == cColor::Black) {
rawdata[ startpos + (x / 8) ] |= (1 << ( 7 - ( x % 8 ) ));
}
}
}
sprintf(str, "P4\n%d %d\n", bitmap->Width(), bitmap->Height());
fwrite(str, strlen(str), 1, fp);
fwrite(rawdata, rawdata_size, 1, fp);
}
fclose(fp);
delete[] rawdata;
rawdata = NULL;
}
}
}
return true;
}
} // end of namespace
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