/**
* Parses the inputStream and and returns the EXIF data in an {@link ExifData}.
*
* @throws ExifInvalidFormatException
* @throws java.io.IOException
*/
protected ExifData read(InputStream inputStream, int options)
throws ExifInvalidFormatException, IOException {
ExifParser parser = ExifParser.parse(inputStream, options, mInterface);
ExifData exifData = new ExifData(parser.getByteOrder());
exifData.setSections(parser.getSections());
exifData.mUncompressedDataPosition = parser.getUncompressedDataPosition();
exifData.setQualityGuess(parser.getQualityGuess());
exifData.setJpegProcess(parser.getJpegProcess());
final int w = parser.getImageWidth();
final int h = parser.getImageLength();
if (w > 0 && h > 0) {
exifData.setImageSize(w, h);
}
ExifTag tag;
int event = parser.next();
while (event != ExifParser.EVENT_END) {
switch (event) {
case ExifParser.EVENT_START_OF_IFD:
exifData.addIfdData(new IfdData(parser.getCurrentIfd()));
break;
case ExifParser.EVENT_NEW_TAG:
tag = parser.getTag();
if (!tag.hasValue()) {
parser.registerForTagValue(tag);
} else {
// Log.v(TAG, "parsing id " + tag.getTagId() + " = " + tag);
if (parser.isDefinedTag(tag.getIfd(), tag.getTagId())) {
exifData.getIfdData(tag.getIfd()).setTag(tag);
} else {
Log.w(TAG, "skip tag because not registered in the tag table:" + tag);
}
}
break;
case ExifParser.EVENT_VALUE_OF_REGISTERED_TAG:
tag = parser.getTag();
if (tag.getDataType() == ExifTag.TYPE_UNDEFINED) {
parser.readFullTagValue(tag);
}
exifData.getIfdData(tag.getIfd()).setTag(tag);
break;
case ExifParser.EVENT_COMPRESSED_IMAGE:
byte buf[] = new byte[parser.getCompressedImageSize()];
if (buf.length == parser.read(buf)) {
exifData.setCompressedThumbnail(buf);
} else {
Log.w(TAG, "Failed to read the compressed thumbnail");
}
break;
case ExifParser.EVENT_UNCOMPRESSED_STRIP:
buf = new byte[parser.getStripSize()];
if (buf.length == parser.read(buf)) {
exifData.setStripBytes(parser.getStripIndex(), buf);
} else {
Log.w(TAG, "Failed to read the strip bytes");
}
break;
}
event = parser.next();
}
return exifData;
}
