bumptech/glide#556 Data Uri / Base64 from JSON

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri/FirebaseGlideModule.java → src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_firebase/FirebaseGlideModule.java

@@ -1,4 +1,4 @@
-package com.bumptech.glide.supportapp.github._556_data_uri;
+package com.bumptech.glide.supportapp.github._556_data_uri_firebase;
 
 import java.io.InputStream;
 
@@ -9,7 +9,7 @@
 import com.firebase.client.Firebase;
 
 // TODO https://github.com/bumptech/glide/wiki/Configuration#creating-a-glidemodule
-class FirebaseGlideModule implements GlideModule {
+public class FirebaseGlideModule implements GlideModule {
 	@Override public void applyOptions(Context context, GlideBuilder builder) {
 
 	}

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri/FirebaseImage.java → src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_firebase/FirebaseImage.java

@@ -1,4 +1,4 @@
-package com.bumptech.glide.supportapp.github._556_data_uri;
+package com.bumptech.glide.supportapp.github._556_data_uri_firebase;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.atomic.AtomicReference;

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri/FirebaseModelLoader.java → src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_firebase/FirebaseModelLoader.java

@@ -1,4 +1,4 @@
-package com.bumptech.glide.supportapp.github._556_data_uri;
+package com.bumptech.glide.supportapp.github._556_data_uri_firebase;
 
 import java.io.*;
 

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_firebase/TestFragment.java

@@ -0,0 +1,23 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_firebase;
+
+import android.content.Context;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.supportapp.*;
+
+public class TestFragment extends GlideImageFragment {
+	@Override protected void load(Context context) {
+		//Glide.setup(new GlideBuilder(context).setBitmapPool(new BitmapPoolAdapter()));
+		//Glide.get(context).register(FirebaseImage.class, InputStream.class, new FirebaseModelLoader.Factory(null));
+		Glide
+				.with(context)
+				.load(new FirebaseImage("data:image/jpeg;base64," + getString(R.string.glide_base64)))
+				.placeholder(R.drawable.glide_placeholder)
+				.error(R.drawable.glide_error)
+				.diskCacheStrategy(DiskCacheStrategy.NONE)
+				.skipMemoryCache(true)
+				.into(imageView);
+	}
+}
+

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_from_string/Base64StreamDataFetcher.java

@@ -0,0 +1,36 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_from_string;
+
+import java.io.*;
+
+import android.util.Base64;
+
+import com.bumptech.glide.Priority;
+import com.bumptech.glide.load.data.DataFetcher;
+
+class Base64StreamDataFetcher implements DataFetcher<InputStream> {
+	private final String base64;
+	public Base64StreamDataFetcher(String base64) {
+		this.base64 = base64;
+	}
+	@Override public InputStream loadData(Priority priority) throws Exception {
+		// depending on how you encoded it, the below is just a guess:
+		// here the full base64 is decoded into bytes and the bytes will be parsed by Glide
+		// TODO match the flags based on your possible inputs: e.g. add | Base64.URL_SAFE
+		byte[] raw = Base64.decode(base64, Base64.NO_WRAP);
+		return new ByteArrayInputStream(raw);
+		// ---- alternative
+		// if you don't want to delay decoding you can use something like:
+		// Base64InputStream (http://stackoverflow.com/a/19981216/253468)
+		// here the base64 bytes are passed to Base64InputStream and that to Glide
+		// so base64 decoding will be done later when Glide reads from the stream.
+		//return new Base64InputStream(new ByteArrayInputStream(base64.getBytes("utf-8")), Base64.NO_WRAP | Base64.URL_SAFE);
+	}
+	@Override public String getId() {
+		// not well-cacheable, I suggest to use .diskCacheStrategy(NONE)
+		return base64;
+	}
+	@Override public void cancel() {
+	}
+	@Override public void cleanup() {
+	}
+}

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_from_string/DataUriGlideModule.java

@@ -0,0 +1,18 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_from_string;
+
+import java.io.InputStream;
+
+import android.content.Context;
+
+import com.bumptech.glide.*;
+import com.bumptech.glide.module.GlideModule;
+
+// TODO https://github.com/bumptech/glide/wiki/Configuration#creating-a-glidemodule
+public class DataUriGlideModule implements GlideModule {
+	@Override public void applyOptions(Context context, GlideBuilder builder) {
+
+	}
+	@Override public void registerComponents(Context context, Glide glide) {
+		glide.register(String.class, InputStream.class, new DataUriModelLoader.Factory());
+	}
+}

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_from_string/DataUriModelLoader.java

@@ -0,0 +1,38 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_from_string;
+
+import java.io.InputStream;
+
+import android.content.Context;
+
+import com.bumptech.glide.load.data.DataFetcher;
+import com.bumptech.glide.load.model.*;
+import com.bumptech.glide.load.model.stream.*;
+
+// TODO read https://github.com/bumptech/glide/wiki/Downloading-custom-sizes-with-Glide
+class DataUriModelLoader implements StreamModelLoader<String> {
+	private final ModelLoader<String, InputStream> defaultLoader;
+	public DataUriModelLoader(ModelLoader<String, InputStream> defaultLoader) {
+		this.defaultLoader = defaultLoader;
+	}
+
+	private static final String PREFIX = "data:image/png;base64,";
+	@Override public DataFetcher<InputStream> getResourceFetcher(final String model, int width, int height) {
+		if (model.startsWith(PREFIX)) { // TODO better matching based on your needs
+			return new Base64StreamDataFetcher(model.substring(PREFIX.length()));
+		} else {
+			return defaultLoader.getResourceFetcher(model, width, height);
+		}
+	}
+
+	public static class Factory implements ModelLoaderFactory<String, InputStream> {
+		public Factory() {
+		}
+		@Override public ModelLoader<String, InputStream> build(Context context, GenericLoaderFactory factories) {
+			// StreamStringLoader is hardcoded, because we've already overwritten String -> InputStream loader
+			// This will be better handled in Glide v4.
+			return new DataUriModelLoader(new StreamStringLoader(context));
+		}
+		@Override public void teardown() {
+		}
+	}
+}

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_from_string/TestFragment.java

@@ -0,0 +1,24 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_from_string;
+
+import android.content.Context;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.load.resource.drawable.GlideDrawable;
+import com.bumptech.glide.supportapp.*;
+import com.bumptech.glide.supportapp.utils.LoggingListener;
+
+public class TestFragment extends GlideImageFragment {
+	@Override protected void load(final Context context) {
+		Glide
+				.with(context)
+				.load("data:image/png;base64," + getString(R.string.glide_base64))
+				.placeholder(R.drawable.glide_placeholder)
+				.error(R.drawable.glide_error)
+				.diskCacheStrategy(DiskCacheStrategy.NONE)
+				.skipMemoryCache(false)
+				.listener(new LoggingListener<String, GlideDrawable>())
+				.into(imageView);
+	}
+}
+

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_via_POST/Image.java

@@ -0,0 +1,34 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_via_POST;
+
+import java.io.IOException;
+
+import org.json.*;
+
+public class Image {
+	private final String key;
+	public Image(String key) {
+		this.key = key;
+	}
+
+	public String getKey() {
+		return key;
+	}
+
+	public String getUri() throws IOException {
+		return "http://httpbin.org/post";
+	}
+
+	public JSONObject getPayload() throws IOException {
+		try {
+			JSONObject object = new JSONObject();
+			object.put("imageKey", key);
+			return object;
+		} catch (JSONException e) {
+			throw new IOException("Invalid implementation", e);
+		}
+	}
+
+	@Override public String toString() {
+		return "Image for key=" + key;
+	}
+}

src/glide3/java/com/bumptech/glide/supportapp/github/_556_data_uri_via_POST/ImageModelLoader.java

@@ -0,0 +1,26 @@
+package com.bumptech.glide.supportapp.github._556_data_uri_via_POST;
+
+import java.io.InputStream;
+
+import android.content.Context;
+
+import com.bumptech.glide.load.data.DataFetcher;
+import com.bumptech.glide.load.model.*;
+import com.bumptech.glide.load.model.stream.StreamModelLoader;
+
+// TODO read https://github.com/bumptech/glide/wiki/Downloading-custom-sizes-with-Glide
+class ImageModelLoader implements StreamModelLoader<Image> {
+	@Override public DataFetcher<InputStream> getResourceFetcher(final Image model, int width, int height) {
+		return new JSONImageFetcher(model);
+	}
+
+	public static class Factory implements ModelLoaderFactory<Image, InputStream> {
+		public Factory() {
+		}
+		@Override public ModelLoader<Image, InputStream> build(Context context, GenericLoaderFactory factories) {
+			return new ImageModelLoader();
+		}
+		@Override public void teardown() {
+		}
+	}
+}