Nyílt Forráskód Techblog

2015. május 24., vasárnap

Richard Stallman: A Free Digital Society (podcast)

"There are many threats to freedom in the digital society. They include massive surveillance, censorship, digital handcuffs, nonfree software that controls users, and the War on Sharing. Other threats come from use of web services. Finally, we have no positive right to do anything in the Internet; every activity is precarious, and can continue only as long as companies are willing to cooperate with it."

https://archive.org/details/freedigitalsociety20150522

Convert MP3 to OGG with AVCONV

/usr/bin/avconv -y -i "input.mp3" -acodec libvorbis -b:a 256k -vol 256 "output.ogg"

-vol kapcsoló: hangerő állítása:
128: fele hangerő
256: nincs változás
512: kétszeres hangerő

2015. május 23., szombat

YouTube feliratok automatikus fordítása

Get YouTube automatically generated subtitles:

#include<iostream>
#include<fstream>
#include<cstring>
#include<cmath>
#include<dirent.h>
using namespace std;

struct content
{
 string strTime;
 string text;
};

struct Time
{
 int h;
 int m;
 int s;
 int ms;
 int tms;
};

content getNext(ifstream &fin);
string &nextch(ifstream &fin, string &test, int length);
Time str2time(string t);
void showTime(Time, ofstream &fout);
void convert(ofstream &fout, ifstream &fin, content A, int line);

int main()
{
 dirent *ep;
 DIR *dp;
 dp = opendir("./");
 ep = readdir(dp);
 while (ep != NULL)
 {
  string name = ep->d_name;
  if (name.find(".txt") != string::npos)
  {
   ifstream fin;
   fin.open(&name[0]);
   content test = getNext(fin);
   if (test.strTime.size() > 0)
   {
    string oname = string(&(name[0]), name.size() - 4)
        + ".YTBCC_eng.srt";
    ofstream fout;
    fout.open(&oname[0]);
    convert(fout, fin, test, 1);
    fout.close();
   }
   fin.close();
  }
  ep = readdir(dp);
 }
}

void convert(ofstream &fout, ifstream &fin, content A, int line)
{
 content N = getNext(fin);
 if (N.strTime.size() > 0)
 {

  Time F = str2time(A.strTime);
  Time L = str2time(N.strTime);
  if (F.tms + 10000 >= L.tms)
  {
   fout << line << endl;
   showTime(F, fout);
   fout << " --> ";
   showTime(L, fout);
   fout << endl;
   fout << A.text << endl << endl;
  }
  else
  {
   fout << line << endl;
   showTime(F, fout);
   fout << " --> ";
   Time temp;
   temp.tms = F.tms + 10000;  //limit 10 seconds per line
   temp.h = temp.tms / 3600000;
   temp.m = (temp.tms - temp.h * 3600000) / 60000;
   temp.s = (temp.tms - temp.h * 3600000 - temp.m * 60000) / 1000;
   temp.ms = F.ms;
   showTime(temp, fout);
   fout << endl;
   fout << A.text << endl << endl;
  }
  convert(fout, fin, N, line + 1);
 }
 else
 {
  fout << line << endl;
  Time Pr = str2time(A.strTime);
  showTime(Pr, fout);
  fout << " --> ";
  Time Ne;
  Ne.ms = Pr.ms;
  int all_t = Pr.h * 3600 + Pr.m * 60 + Pr.s + 6;
  Ne.h = all_t / 3600;
  Ne.m = (all_t - Ne.h * 3600) / 60;
  Ne.s = all_t - Ne.h * 3600 - Ne.m * 60;
  showTime(Ne, fout);
  fout << endl;
  fout << A.text << endl;
 }
}

content getNext(ifstream &fin)
{
 string strTime, text;
 string keyTime = "data-time=\"";
 string keyText = "<div class=\"caption-line-text\">";
 int size_ktime = keyTime.size();
 int size_ktext = keyText.size();
 bool jud = 1; //judge if our time and text are
               //contained in txt file
               //1 == be not contained
 string test;
 //get strTime
 test = nextch(fin, test, size_ktime);
 if (test != "\0")
 {
  do
  {
   if (test == keyTime)
   {
    jud = 0;
    break;
   }
   else
    test = nextch(fin, test, size_ktime);
  }while (test != "\0");
  if (jud)
   return {"\0", "\0"};
  else
  {
   char ch = fin.get();
   while(ch != '\"')
   {
    strTime = strTime + ch;
    ch = fin.get();
   }
   //ensure the form of strTime is XXX.XXX
   jud = 1;//here jud = 1 means that the form is XXX,no '.'
   for (int i = 0; i < strTime.size(); i++)
   {
    if(strTime[i] == '.')
    {
     jud = 0;
     break;
    }
   }
   if (jud)
    strTime = strTime + ".0";
  }
 }
 else
  return {"\0", "\0"};
 //get text
 jud = 1;
 test = string();
 test = nextch(fin, test, size_ktext);
 if (test != "\0")
 {
  do
  {
   if (test == keyText)
   {
    jud = 0;
    break;
   }
   else
    test = nextch(fin, test, size_ktext);
  } while (test != "\0");
  if (jud)
   return {"\0", "\0"};
  else
  {
   char ch = fin.get();
   while (ch != '<')
   {
    text = text + ch;
    ch = fin.get();
   }
  }
 }
 else
  return {"\0", "\0"};

 return {strTime, text};
}

string &nextch(ifstream &fin, string &test, int length)
{
 int n = test.size();
 if(n > 0)
 {
  char ch = fin.get();
  if (!fin.eof())
  {
   for (int i = 0; i < n - 1; i++)
    test[i] = test[i + 1];

   test[n - 1] = ch;
   return test;
  }
  else
  {
   test = "\0";
   return test;
  }
 }
 else
 {
  char ch = fin.get();
  for (int i = 0; i < length; i++)
  {
   if (!fin.eof())
   {
    test = test + ch;
    if (i < length - 1)
     ch = fin.get();
   }
   else
   {
    test = "\0";
    return test;
   }
  }
  return test;
 }
}

Time str2time(string t)
{
 int k = 0;
 while (t[k] != '.')
 {
  k++;
 }
 int h, m, s, ms, tms, time;
 time = 0;
 for (int i = 0; i < k; i++)
 {
  time = time + (t[i] - 48) * int(pow(10.0, k - i - 1));
 }
 h = time / 3600;
 m = (time - h * 3600) / 60;
 s = time - h * 3600 - m * 60;
 ms = 0;
 int length = t.size();
 for (int i = k + 1; i < length; i++)
  ms = ms + (t[i] - 48) * int(pow(10.0, 3 - i + k));
 tms = time * 1000 + ms;
 Time E = {h, m, s, ms, tms};
 return E;
}

void showTime(Time T, ofstream &fout)
{
 if (T.h < 10)
  fout << "0" << T.h;
 else
  fout << T.h;

 fout << ":";

 if (T.m < 10)
  fout << "0" << T.m;
 else
  fout << T.m;

 fout << ":";

 if (T.s < 10)
  fout << "0" << T.s;
 else
  fout << T.s;

 if (T.ms == 0)
  fout << ",000";
 else
 {
  fout << ",";
  if (T.ms < 10)
   fout << "00" << T.ms;
  else if (T.ms < 100)
   fout << "0" << T.ms;
  else fout << T.ms;
 }
}

https://code.google.com/p/youtube-subtitles-download/

2015. április 28., kedd

Skype libGL.so.1 error Ubuntu 14.04

skype: error while loading shared libraries: libGL.so.1: cannot open shared object file: No such file or directory
Kernel 3.16 x86_64 GNU/Linux

Run:

update-alternatives --display i386-linux-gnu_gl_conf
sudo update-alternatives --config i386-linux-gnu_gl_conf

Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/lib/nvidia-325/alt_ld.so.conf 8602 auto mode
1 /usr/lib/i386-linux-gnu/mesa/ld.so.conf 500 manual mode
2 /usr/lib/nvidia-325/alt_ld.so.conf 8602 manual mode

Press enter to keep the current choice[*], or type selection number: 1

sudo ldconfig

http://askubuntu.com/questions/257897/error-loading-libgl-so-1

2015. március 11., szerda

Run JAVA applications in Wine

Run JAVA app inside Wine on Linux:
- Download 32-bit Oracle JRE, extract to /home/USERNAME/.wine/drive_c/Program Files (x86)
- Add JRE to PATH (run: wine regedit)
[HKEY_CURRENT_USER\Environment]
"PATH"="C:\\Program Files (x86)\\jre\\bin"
- [OPTIONAL] In Wine settings, set version to Windows XP