/**
* Helper function for Thumbnail generation: execute all thumbnailers of a given MimeType.
*
* @param useMimeType Which MIME Type the thumbnailers should be taken from
* @param input Input File that should be processed
* @param output Output file where the image shall be written.
* @param detectedMimeType MIME Type that was returned by automatic MIME Detection
* @return True on success (1 thumbnailer could generate the output file).
* @throws IOException Input file cannot be read, or output file cannot be written, or necessary
* temporary files could not be created.
*/
private boolean executeThumbnailers(
String useMimeType, File input, File output, String detectedMimeType) throws IOException {
for (Thumbnailer thumbnailer : thumbnailers.getIterable(useMimeType)) {
try {
thumbnailer.generateThumbnail(input, output, detectedMimeType);
return true;
} catch (ThumbnailerException e) {
// This Thumbnailer apparently wasn't suitable, so try next
mLog.warn(
"Warning: "
+ thumbnailer.getClass().getName()
+ " could not handle the file "
+ input.getName()
+ " (trying next)",
e);
}
}
return false;
}
