bool
ArtUtility::extractSingle( JobContext& job, const CoverArtBox::Item& item, uint32_t index )
{
// compute out filename
string out_name = job.file;
FileSystem::pathnameStripExtension( out_name );
ostringstream oss;
oss << out_name << ".art[" << index << ']';
// if implicit we try to determine type by inspecting data
BasicType bt = item.type;
if( bt == BT_IMPLICIT )
bt = computeBasicType( item.buffer, item.size );
// add file extension appropriate for known covr-box types
switch( bt ) {
case BT_GIF: oss << ".gif"; break;
case BT_JPEG: oss << ".jpg"; break;
case BT_PNG: oss << ".png"; break;
case BT_BMP: oss << ".bmp"; break;
default:
oss << ".dat";
break;
}
out_name = oss.str();
verbose1f( "extracting %s (index=%d) -> %s\n", job.file.c_str(), index, out_name.c_str() );
if( dryrunAbort() )
return SUCCESS;
File out( out_name, File::MODE_CREATE );
if( openFileForWriting( out ))
return FAILURE;
File::Size nout;
if( out.write( item.buffer, item.size, nout ))
return herrf( "write failed: %s\n", out_name.c_str() );
out.close();
return SUCCESS;
}
void
Tags::c_setArtwork( MP4Tags*& tags, uint32_t index, MP4TagArtwork& c_artwork )
{
if( !(index < artwork.size()) )
return;
CoverArtBox::Item& item = artwork[index];
switch( c_artwork.type ) {
case MP4_ART_BMP:
item.type = BT_BMP;
break;
case MP4_ART_GIF:
item.type = BT_GIF;
break;
case MP4_ART_JPEG:
item.type = BT_JPEG;
break;
case MP4_ART_PNG:
item.type = BT_PNG;
break;
case MP4_ART_UNDEFINED:
default:
item.type = computeBasicType( c_artwork.data, c_artwork.size );
break;
}
item.buffer = (uint8_t*)malloc( c_artwork.size );
item.size = c_artwork.size;
item.autofree = true;
memcpy( item.buffer, c_artwork.data, c_artwork.size );
updateArtworkShadow( tags );
}
