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/**
* GraphLCD plugin for the Video Disk Recorder
*
* tuxbox.c - tuxbox logo class
*
* (c) 2004 Andreas Brachold <vdr04 AT deltab de>
**/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; *
* if not, write to the Free Software Foundation, Inc., *
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
* *
***************************************************************************/
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
#include <string>
#include <glcdgraphics/bitmap.h>
#include <glcdgraphics/image.h>
#include "tuxbox.h"
#pragma pack(1)
struct ani_header {
unsigned char magic[4]; // = "LCDA"
unsigned short format; // Format
unsigned short width; // Breite
unsigned short height; // Höhe
unsigned short count; // Anzahl Einzelbilder
unsigned long delay; // µs zwischen Einzelbildern
};
#pragma pack()
cTuxBoxFile::cTuxBoxFile()
{
}
cTuxBoxFile::~cTuxBoxFile()
{
}
bool cTuxBoxFile::Load(GLCD::cImage & image, const std::string & fileName)
{
bool ret = false;
FILE * fIN;
long fileLen;
struct ani_header header;
bool bInvert = false;
fIN = fopen(fileName.c_str(), "rb");
if (fIN)
{
// get len of file
if (fseek(fIN, 0, SEEK_END))
{
fclose(fIN);
return false;
}
fileLen = ftell(fIN);
// rewind and get Header
if (fseek(fIN, 0, SEEK_SET))
{
fclose(fIN);
return false;
}
// Read header
if (fread(&header, sizeof(header), 1, fIN) != 1)
{
fclose(fIN);
return false;
}
image.Clear();
image.SetWidth(ntohs(header.width));
image.SetHeight(ntohs(header.height));
image.SetDelay(ntohl(header.delay) / 1000);
// check Header
if (strncmp((const char*)header.magic, "LCDA", sizeof(header.magic)) ||
!image.Width() || !image.Height() || ntohs(header.format) != 0)
{
fprintf(stderr, "ERROR: load %s failed, wrong header.\n", fileName.c_str());
fclose(fIN);
return false;
}
//fprintf(stderr,"%d %dx%d (%d %d) %d\n",ntohs(header.count),image.Width(),image.Height(),fileLen, ( (ntohs(header.count) * (image.Width() * ((image.Height() + 7) / 8))) + sizeof(header)),lhdr.delay);
// check file length
if (!ntohs(header.count)
|| (fileLen != (long) ( (ntohs(header.count) * (image.Width() * ((image.Height() + 7) / 8))) + sizeof(header))))
{
fprintf(stderr, "ERROR: load %s failed, wrong size.\n", fileName.c_str());
fclose(fIN);
return false;
}
// Set minimal limit for next image
if (image.Delay() < 10)
image.SetDelay(10);
for (unsigned int n=0;n<ntohs(header.count);++n)
{
ret = false;
unsigned int nBmpSize = image.Height() * ((image.Width() + 7) / 8);
unsigned char *bitmap = new unsigned char[nBmpSize];
if (!bitmap)
{
fprintf(stderr, "ERROR: malloc failed.");
break;
}
unsigned int nAniSize = image.Width() * ((image.Height() + 7) / 8);
unsigned char *pAni = new unsigned char[nAniSize];
if (!pAni)
{
delete[] bitmap;
fprintf(stderr, "ERROR: malloc failed.");
break;
}
if (1 != fread(pAni, nAniSize, 1, fIN))
{
fprintf(stderr,"ERROR: Cannot read filedata: %s\n", fileName.c_str());
delete[] bitmap;
delete[] pAni;
break;
}
vert2horz(pAni,bitmap, image.Width(), image.Height());
delete[] pAni;
if (bInvert)
for (unsigned int i=0;i<nBmpSize;++i)
bitmap[i] ^= 0xFF;
image.AddBitmap(new GLCD::cBitmap(image.Width(), image.Height(), bitmap));
ret = true;
}
fclose(fIN);
if (!ret)
image.Clear();
}
return ret;
}
bool cTuxBoxFile::Save(GLCD::cImage & image, const std::string & fileName)
{
FILE * fOut;
struct ani_header header;
bool bRet = false;
if (image.Count() > 0
&& image.Width()
&& image.Height())
{
memcpy(header.magic, "LCDA", 4);
header.format = htons(0);
header.width = htons(image.Width());
header.height = htons(image.Height());
header.count = htons(image.Count());
header.delay = htonl(image.Delay() * 1000);
if (image.Width() != 120 || image.Height() != 64)
{
fprintf(stderr,"WARNING: Maybe wrong image dimension (for all I know is 120x64 wanted) %s\n", fileName.c_str());
}
fOut = fopen(fileName.c_str(), "wb");
if (!fOut) {
fprintf(stderr,"ERROR: Cannot create file: %s\n", fileName.c_str());
return false;
}
if (1 != fwrite(&header, sizeof(header), 1, fOut))
{
fprintf(stderr,"ERROR: Cannot write fileheader: %s\n", fileName.c_str());
fclose(fOut);
return false;
}
for (unsigned int n = 0; n < image.Count(); n++)
{
bRet = false;
unsigned int nAniSize = image.Width() * ((image.Height() + 7) / 8);
unsigned char *pAni = new unsigned char[nAniSize];
if (!pAni)
{
fprintf(stderr, "ERROR: malloc failed.");
break;
}
horz2vert(image.GetBitmap(n)->Data(), pAni, image.Width(), image.Height());
if (1 != fwrite(pAni, nAniSize, 1, fOut))
{
delete [] pAni;
fprintf(stderr,"ERROR: Cannot write filedata: %s\n", fileName.c_str());
break;
}
delete [] pAni;
bRet = true;
}
fclose(fOut);
}
return bRet;
}
/** Translate memory alignment from vertical to horizontal
rotate from {Byte} to {Byte}
{o}[o][o][o][o][o][o][o] => { oooooooo }
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]
{o}[o][o][o][o][o][o][o] => [ oooooooo ]*/
void cTuxBoxFile::vert2horz(const unsigned char* source, unsigned char* dest, int width, int height) {
int x, y, off;
memset(dest,0,height*((width+7)/8));
for (y=0; y<height; ++y)
{
for (x=0; x<width; ++x)
{
off = x + ((y/8) * width);
if (source[off] & (0x1 << (y % 8)))
{
off = (x / 8) + (y * ((width+7)/8));
dest[off] |= (unsigned char)(0x80 >> (x % 8));
}
}
}
}
/** Translate memory alignment from horizontal to vertical (rotate byte)
rotate from {Byte} to {Byte}
{ oooooooo } => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]
[ oooooooo ] => {o}[o][o][o][o][o][o][o]*/
void cTuxBoxFile::horz2vert(const unsigned char* source, unsigned char* dest, int width, int height) {
int x, y, off;
memset(dest,0,width*((height+7)/8));
for (y=0; y<height; ++y)
{
for (x=0; x<width; ++x)
{
off = (x / 8) + ((y) * ((width+7)/8));
if (source[off] & (0x80 >> (x % 8)))
{
off = x + ((y/8) * width);
dest[off] |= (unsigned char)(0x1 << (y % 8));
}
}
}
}
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