/**
* Write the device independent image array stored in the specified loader to the specified output
* stream using the specified file format.
*/
public static void save(OutputStream os, int format, ImageLoader loader) {
if (format < 0 || format >= FORMATS.length) SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
if (FORMATS[format] == null) SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
if (loader.data == null || loader.data.length < 1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
LEDataOutputStream stream = new LEDataOutputStream(os);
FileFormat fileFormat = null;
try {
Class clazz = Class.forName(FORMAT_PACKAGE + '.' + FORMATS[format] + FORMAT_SUFFIX);
fileFormat = (FileFormat) clazz.newInstance();
} catch (Exception e) {
SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
}
if (format == SWT.IMAGE_BMP_RLE) {
switch (loader.data[0].depth) {
case 8:
fileFormat.compression = 1;
break;
case 4:
fileFormat.compression = 2;
break;
}
}
fileFormat.unloadIntoStream(loader, stream);
}
/**
* Read the specified input stream using the specified loader, and return the device independent
* image array represented by the stream.
*/
public static ImageData[] load(InputStream is, ImageLoader loader) {
FileFormat fileFormat = null;
LEDataInputStream stream = new LEDataInputStream(is);
for (int i = 1; i < FORMATS.length; i++) {
if (FORMATS[i] != null) {
try {
fileFormat = getFileFormat(stream, FORMATS[i]);
if (fileFormat != null) break;
} catch (ClassNotFoundException e) {
FORMATS[i] = null;
} catch (Exception e) {
}
}
}
if (fileFormat == null) SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
fileFormat.loader = loader;
return fileFormat.loadFromStream(stream);
}
static FileFormat getFileFormat(LEDataInputStream stream, String format) throws Exception {
Class clazz = Class.forName(FORMAT_PACKAGE + '.' + format + FORMAT_SUFFIX);
FileFormat fileFormat = (FileFormat) clazz.newInstance();
if (fileFormat.isFileFormat(stream)) return fileFormat;
return null;
}