[mythtv] patch - AlbumArt - id3v2 pic frame

[Dan Morphis]

diff -u is the prefered way to receive patches as they are more readable.

-dan

Christian Poetzsch wrote:

> Hello,
> This patch is used to get the album art out of
> the id3v2 tag as descripted in http://www.id3.org/develop.html.
>
> It's uses id3lib for id3 part.
>
> First its look in the file for a APIC frame and
> if one found its used as art. If no one where found
> the behaviour is like before.
>
> Cheers,
> Chris
>
>------------------------------------------------------------------------
>
>*** visualize.cpp	2004-01-31 07:35:10.000000000 +0100
>--- new/visualize.cpp	2004-05-07 11:05:59.333610000 +0200
>***************
>*** 23,28 ****
>--- 23,29 ----
>  #include <iostream>
>  using namespace std;
>  
>+ #include <id3tag.h>
>  #include <mythtv/mythcontext.h>
>  
>  Spectrum::Spectrum()
>***************
>*** 281,331 ****
>          return false;
>  
>      QString curfile = pParent->decoder()->getFilename();
>!     QString curdir = curfile.left(curfile.findRev("/"));
>!     QImage art;
>!  
>!     // If the directory has changed (new album) or the size, reload
>!     if ((directory.compare(curdir) != 0) || (cursize != size))
>      {
>!         // Directory has changed
>          directory = curdir;
>!         // Get filter
>!         QString namefilter = gContext->GetSetting("AlbumArtFilter",
>                                                    "*.png;*.jpg;*.jpeg;*.gif");
>!         // Get directory contents based on filter
>!         QDir folder(curdir, namefilter, QDir::Name | QDir::IgnoreCase, 
>!                     QDir::Files | QDir::Hidden);
>! 
>!         QString fileart = "";
>! 
>!         if (folder.count())
>!             fileart = folder[rand() % folder.count()];
>! 
>!         curdir.append("/");
>!         curdir.append(fileart);
>!         art.load(curdir);
>          if (art.isNull())
>          {
>              p->fillRect(0, 0, size.width(), size.height(), back);
>              p->setPen(Qt::white);
>              p->setFont(gContext->GetMediumFont());
>              p->drawText(size.width() / 2 - 200, size.height() / 2 - 10, 400, 20, 
>!                         Qt::AlignCenter, QObject::tr("?"));
>!             return true;
>          }
>- 
>          QSize artsize = art.scale(size, QImage::ScaleMin).size();
>- 
>          // Paint the image
>          p->fillRect(0, 0, size.width(), size.height(), back);
>          p->drawPixmap((size.width() - artsize.width()) / 2,
>                        (size.height() - artsize.height()) / 2,
>                        art.smoothScale(size, QImage::ScaleMin));
>!         // Store our new size
>!         cursize = size;
>!         return true;
>      }
>-     art.reset();
>      return true;
>  }
>  
>--- 282,375 ----
>          return false;
>  
>      QString curfile = pParent->decoder()->getFilename();
>!     // If the size/file has changed do it again
>!     if (filename != curfile || cursize != size)
>      {
>!         QImage art;
>! 
>!         filename = curfile;
>!         
>!         // Try to load the picture from id3v2 tag
>!         id3_file *id3file = id3_file_open(curfile.local8Bit(), 
>!                                           ID3_FILE_MODE_READONLY);
>!         if (id3file)
>!         {
>!             id3_tag *tag = id3_file_tag(id3file);
>!             if (tag)
>!             {
>!                // Search for a picture frame
>!                struct id3_frame *frame = id3_tag_findframe(tag, "APIC", 0);
>!                if (frame)
>!                {
>!                     // Some debug
>!                     if (0)
>!                     {
>!                         cout << "ID3 id: " << frame->id << endl;
>!                         cout << "ID3 description: " << frame->description << endl;
>!                         cout << "ID3 nfields: " << frame->nfields << endl;
>!                         cout << "ID3 mimetype: " << id3_field_getlatin1(id3_frame_field(frame, 1)) << endl;
>!                     }
>!                     // Check if it is a hyperlink
>!                     // thats current not supported 
>!                     // (Its the case if "-->" is in the mime field)
>!                     const char* mime = (const char*)id3_field_getlatin1(id3_frame_field(frame, 1));
>!                     if (strcmp(mime, "-->") != 0)
>!                     {
>!                         id3_length_t len=frame->decoded_length;
>!                         // Get the picture data
>!                         const id3_byte_t* pictData = id3_field_getbinarydata(id3_frame_field(frame, 4), &len);
>!                         // Try to load it
>!                         art.loadFromData (pictData, len);
>!                     }
>!                 }
>!             }
>!             id3_file_close(id3file);
>!         }
>!       
>!         QString curdir = curfile.left(curfile.findRev("/"));
>          directory = curdir;
>!  
>!         // If there was no id3 picture tag, try to load
>!         // some picture in the directory tree
>!         if (art.isNull())
>!         {
>!             // Get filter
>!             QString namefilter = gContext->GetSetting("AlbumArtFilter",
>                                                    "*.png;*.jpg;*.jpeg;*.gif");
>!             // Get directory contents based on filter
>!             QDir folder(curdir, namefilter, QDir::Name | QDir::IgnoreCase, 
>!                         QDir::Files | QDir::Hidden);
>!   
>!             QString fileart = "";
>! 
>!             if (folder.count())
>!                 fileart = folder[rand() % folder.count()];
>! 
>!             curdir.append("/");
>!             curdir.append(fileart);
>!             art.load(curdir);
>!         }
>!         // Store our new size
>!         cursize = size;
>!         // If nothing was found 
>!         // paint some usefull art :-)
>          if (art.isNull())
>          {
>              p->fillRect(0, 0, size.width(), size.height(), back);
>              p->setPen(Qt::white);
>              p->setFont(gContext->GetMediumFont());
>              p->drawText(size.width() / 2 - 200, size.height() / 2 - 10, 400, 20, 
>!                      Qt::AlignCenter, QObject::tr("?"));
>!           return true;
>          }
>          QSize artsize = art.scale(size, QImage::ScaleMin).size();
>          // Paint the image
>          p->fillRect(0, 0, size.width(), size.height(), back);
>          p->drawPixmap((size.width() - artsize.width()) / 2,
>                        (size.height() - artsize.height()) / 2,
>                        art.smoothScale(size, QImage::ScaleMin));
>!         art.reset();
>      }
>      return true;
>  }
>  
>  
>
>------------------------------------------------------------------------
>
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