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Android - Update Image.getSize to use encoded image #14358

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Android - Update Image.getSize to use encoded image #14358

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2451609
Update getSize to use encoded image
orenklein Jun 7, 2017
c5f0292
Android Image.getSize fix encoded image instantiate
orenklein Jun 9, 2017
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23 changes: 13 additions & 10 deletions ReactAndroid/src/main/java/com/facebook/react/modules/image/ImageLoaderModule.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@
import com.facebook.datasource.DataSubscriber;
import com.facebook.drawee.backends.pipeline.Fresco;
import com.facebook.imagepipeline.core.ImagePipeline;
import com.facebook.imagepipeline.image.CloseableImage;
import com.facebook.imagepipeline.image.EncodedImage;
import com.facebook.imagepipeline.memory.PooledByteBuffer;
import com.facebook.imagepipeline.request.ImageRequest;
import com.facebook.imagepipeline.request.ImageRequestBuilder;
import com.facebook.react.bridge.Arguments;
Expand Down Expand Up @@ -81,22 +82,23 @@ public void getSize(
Uri uri = Uri.parse(uriString);
ImageRequest request = ImageRequestBuilder.newBuilderWithSource(uri).build();

DataSource<CloseableReference<CloseableImage>> dataSource =
Fresco.getImagePipeline().fetchDecodedImage(request, mCallerContext);
DataSource<CloseableReference<PooledByteBuffer>> dataSource =
Fresco.getImagePipeline().fetchEncodedImage(request, mCallerContext);
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Fresco only supports limited source types for encoded image:
https://github.com/facebook/fresco/blob/v1.3.0/imagepipeline/src/main/java/com/facebook/imagepipeline/core/ProducerSequenceFactory.java#L169

For example: SOURCE_TYPE_LOCAL_CONTENT (content://) which is returned from RollCamera is not supported

Use ContentResolver.openInputStream together with BitmapUtil.decodeDimensions(...) for those not supported types.

Actually BitmapUtil.decodeDimensions probably has better performance than loading the fully encoded image since it only needs to decode the metadata. So I suggest use that when possible.

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@orenklein @foghina
See my approach at bood@ea4b4dd

I'll make another PR if it looks good.


DataSubscriber<CloseableReference<CloseableImage>> dataSubscriber =
new BaseDataSubscriber<CloseableReference<CloseableImage>>() {
DataSubscriber<CloseableReference<PooledByteBuffer>> dataSubscriber =
new BaseDataSubscriber<CloseableReference<PooledByteBuffer>>() {
@Override
protected void onNewResultImpl(
DataSource<CloseableReference<CloseableImage>> dataSource) {
DataSource<CloseableReference<PooledByteBuffer>> dataSource) {
if (!dataSource.isFinished()) {
return;
}
CloseableReference<CloseableImage> ref = dataSource.getResult();
CloseableReference<PooledByteBuffer> ref = dataSource.getResult();
if (ref != null) {
EncodedImage image = new EncodedImage(ref);
try {
CloseableImage image = ref.get();

image.parseMetaData();
WritableMap sizes = Arguments.createMap();
sizes.putInt("width", image.getWidth());
sizes.putInt("height", image.getHeight());
Expand All @@ -106,14 +108,15 @@ protected void onNewResultImpl(
promise.reject(ERROR_GET_SIZE_FAILURE, e);
} finally {
CloseableReference.closeSafely(ref);
image.close();
}
} else {
promise.reject(ERROR_GET_SIZE_FAILURE);
}
}

@Override
protected void onFailureImpl(DataSource<CloseableReference<CloseableImage>> dataSource) {
protected void onFailureImpl(DataSource<CloseableReference<PooledByteBuffer>> dataSource) {
promise.reject(ERROR_GET_SIZE_FAILURE, dataSource.getFailureCause());
}
};
Expand Down