82 lines
2.3 KiB
Java
82 lines
2.3 KiB
Java
package org.thoughtcrime.securesms.components.subsampling;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.BitmapRegionDecoder;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.net.Uri;
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import com.davemorrissey.labs.subscaleview.decoder.ImageRegionDecoder;
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import com.davemorrissey.labs.subscaleview.decoder.SkiaImageRegionDecoder;
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import org.thoughtcrime.securesms.logging.Log;
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import org.thoughtcrime.securesms.mms.PartAuthority;
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import java.io.InputStream;
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public class AttachmentRegionDecoder implements ImageRegionDecoder {
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private static final String TAG = AttachmentRegionDecoder.class.getName();
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private SkiaImageRegionDecoder passthrough;
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private BitmapRegionDecoder bitmapRegionDecoder;
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@Override
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public Point init(Context context, Uri uri) throws Exception {
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Log.d(TAG, "Init!");
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if (!PartAuthority.isLocalUri(uri)) {
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passthrough = new SkiaImageRegionDecoder();
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return passthrough.init(context, uri);
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}
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InputStream inputStream = PartAuthority.getAttachmentStream(context, uri);
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this.bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
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inputStream.close();
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return new Point(bitmapRegionDecoder.getWidth(), bitmapRegionDecoder.getHeight());
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}
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@Override
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public Bitmap decodeRegion(Rect rect, int sampleSize) {
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Log.d(TAG, "Decode region: " + rect);
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if (passthrough != null) {
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return passthrough.decodeRegion(rect, sampleSize);
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}
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synchronized(this) {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inSampleSize = sampleSize;
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options.inPreferredConfig = Bitmap.Config.RGB_565;
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Bitmap bitmap = bitmapRegionDecoder.decodeRegion(rect, options);
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if (bitmap == null) {
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throw new RuntimeException("Skia image decoder returned null bitmap - image format may not be supported");
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}
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return bitmap;
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}
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}
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public boolean isReady() {
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Log.d(TAG, "isReady");
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return (passthrough != null && passthrough.isReady()) ||
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(bitmapRegionDecoder != null && !bitmapRegionDecoder.isRecycled());
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}
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public void recycle() {
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if (passthrough != null) {
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passthrough.recycle();
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passthrough = null;
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} else {
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bitmapRegionDecoder.recycle();
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}
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}
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}
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