Support for tiling image view and large image viewing

Fixes #5949
Fixes #5574
Fixes #4380
// FREEBIE

AndroidManifest.xml

@@ -5,7 +5,7 @@
       android:versionCode="222"
       android:versionName="3.25.4">
 
-    <uses-sdk tools:overrideLibrary="com.amulyakhare.textdrawable,com.astuetz.pagerslidingtabstrip,pl.tajchert.waitingdots,com.h6ah4i.android.multiselectlistpreferencecompat,android.support.v13"/>
+    <uses-sdk tools:overrideLibrary="com.amulyakhare.textdrawable,com.astuetz.pagerslidingtabstrip,pl.tajchert.waitingdots,com.h6ah4i.android.multiselectlistpreferencecompat,android.support.v13,com.davemorrissey.labs.subscaleview"/>
 
     <permission android:name="org.thoughtcrime.securesms.ACCESS_SECRETS"
                 android:label="Access to TextSecure Secrets"

build.gradle

@@ -80,6 +80,9 @@ dependencies {
     compile 'org.whispersystems:signal-service-android:2.4.4'
     compile 'com.h6ah4i.android.compat:mulsellistprefcompat:1.0.0'
     compile 'com.google.zxing:core:3.2.1'
+    compile ('com.davemorrissey.labs:subsampling-scale-image-view:3.6.0') {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    }
 
     compile ('cn.carbswang.android:NumberPickerView:1.0.9') {
         exclude group: 'com.android.support', module: 'appcompat-v7'

res/layout/zooming_image_view.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:tools="http://schemas.android.com/tools"
+       tools:context="org.thoughtcrime.securesms.components.ZoomingImageView">
+
+    <ImageView android:id="@+id/image_view"
+               android:layout_width="match_parent"
+               android:layout_height="match_parent"
+               android:visibility="visible"/>
+
+    <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+            android:id="@+id/subsampling_image_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"/>
+
+</merge>

src/org/thoughtcrime/securesms/MediaPreviewActivity.java

@@ -63,6 +63,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity im
 
   private ZoomingImageView image;
   private VideoPlayer      video;
+
   private Uri       mediaUri;
   private String    mediaType;
   private Recipient recipient;
@@ -137,8 +138,8 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity im
   }
 
   private void initializeViews() {
-    image = (ZoomingImageView)findViewById(R.id.image);
+    image = (ZoomingImageView) findViewById(R.id.image);
-    video = (VideoPlayer)findViewById(R.id.video_player);
+    video = (VideoPlayer) findViewById(R.id.video_player);
   }
 
   private void initializeResources() {
@@ -171,7 +172,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity im
       if (mediaType != null && mediaType.startsWith("image/")) {
         image.setVisibility(View.VISIBLE);
         video.setVisibility(View.GONE);
-        image.setImageUri(masterSecret, mediaUri);
+        image.setImageUri(masterSecret, mediaUri, mediaType);
       } else if (mediaType != null && mediaType.startsWith("video/")) {
         image.setVisibility(View.GONE);
         video.setVisibility(View.VISIBLE);
@@ -185,7 +186,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity im
   }
 
   private void cleanupMedia() {
-    image.setImageDrawable(null);
+    image.cleanup();
     video.cleanup();
   }
 

src/org/thoughtcrime/securesms/components/ZoomingImageView.java

@@ -1,48 +1,131 @@
 package org.thoughtcrime.securesms.components;
 
 import android.content.Context;
-import android.graphics.Bitmap;
+import android.graphics.Canvas;
 import android.net.Uri;
+import android.os.AsyncTask;
+import android.support.annotation.Nullable;
 import android.util.AttributeSet;
+import android.util.Log;
+import android.util.Pair;
+import android.view.View;
+import android.widget.FrameLayout;
 import android.widget.ImageView;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.bumptech.glide.load.resource.drawable.GlideDrawable;
-import com.bumptech.glide.request.target.BitmapImageViewTarget;
+import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.target.GlideDrawableImageViewTarget;
+import com.bumptech.glide.request.target.Target;
+import com.davemorrissey.labs.subscaleview.ImageSource;
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
 
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.components.subsampling.AttachmentBitmapDecoder;
+import org.thoughtcrime.securesms.components.subsampling.AttachmentRegionDecoder;
 import org.thoughtcrime.securesms.crypto.MasterSecret;
 import org.thoughtcrime.securesms.mms.DecryptableStreamUriLoader.DecryptableUri;
+import org.thoughtcrime.securesms.mms.PartAuthority;
+import org.thoughtcrime.securesms.util.BitmapDecodingException;
+import org.thoughtcrime.securesms.util.BitmapUtil;
+
+import java.io.IOException;
+import java.io.InputStream;
 
 import uk.co.senab.photoview.PhotoViewAttacher;
 
-public class ZoomingImageView extends ImageView {
+public class ZoomingImageView extends FrameLayout {
-  private PhotoViewAttacher attacher = new PhotoViewAttacher(this);
+
+  private static final String TAG = ZoomingImageView.class.getName();
+
+  private final ImageView                 imageView;
+  private final PhotoViewAttacher         imageViewAttacher;
+  private final SubsamplingScaleImageView subsamplingImageView;
 
   public ZoomingImageView(Context context) {
-    super(context);
+    this(context, null);
   }
 
   public ZoomingImageView(Context context, AttributeSet attrs) {
-    super(context, attrs);
+    this(context, attrs, 0);
   }
 
   public ZoomingImageView(Context context, AttributeSet attrs, int defStyleAttr) {
     super(context, attrs, defStyleAttr);
+
+    inflate(context, R.layout.zooming_image_view, this);
+
+    this.imageView            = (ImageView) findViewById(R.id.image_view);
+    this.subsamplingImageView = (SubsamplingScaleImageView) findViewById(R.id.subsampling_image_view);
+    this.imageViewAttacher     = new PhotoViewAttacher(imageView);
+
+    this.subsamplingImageView.setBitmapDecoderClass(AttachmentBitmapDecoder.class);
+    this.subsamplingImageView.setRegionDecoderClass(AttachmentRegionDecoder.class);
+    this.subsamplingImageView.setOrientation(SubsamplingScaleImageView.ORIENTATION_USE_EXIF);
   }
 
-  public void setImageUri(MasterSecret masterSecret, Uri uri) {
+  public void setImageUri(final MasterSecret masterSecret, final Uri uri, final String contentType) {
+    final Context context        = getContext();
+    final int     maxTextureSize = BitmapUtil.getMaxTextureSize();
+
+    Log.w(TAG, "Max texture size: " + maxTextureSize);
+
+    new AsyncTask<Void, Void, Pair<Integer, Integer>>() {
+      @Override
+      protected @Nullable Pair<Integer, Integer> doInBackground(Void... params) {
+        if (contentType.equals("image/gif")) return null;
+
+        try {
+          InputStream inputStream = PartAuthority.getAttachmentStream(context, masterSecret, uri);
+          return BitmapUtil.getDimensions(inputStream);
+        } catch (IOException | BitmapDecodingException e) {
+          Log.w(TAG, e);
+          return null;
+        }
+      }
+
+      protected void onPostExecute(@Nullable Pair<Integer, Integer> dimensions) {
+        Log.w(TAG, "Dimensions: " + dimensions.first + ", " + dimensions.second);
+
+        if (dimensions == null || (dimensions.first <= maxTextureSize && dimensions.second <= maxTextureSize)) {
+          Log.w(TAG, "Loading in standard image view...");
+          setImageViewUri(masterSecret, uri);
+        } else {
+          Log.w(TAG, "Loading in subsampling image view...");
+          setSubsamplingImageViewUri(uri);
+        }
+      }
+    }.execute();
+  }
+
+  private void setImageViewUri(MasterSecret masterSecret, Uri uri) {
+    subsamplingImageView.setVisibility(View.GONE);
+    imageView.setVisibility(View.VISIBLE);
+
     Glide.with(getContext())
          .load(new DecryptableUri(masterSecret, uri))
          .diskCacheStrategy(DiskCacheStrategy.NONE)
          .dontTransform()
          .dontAnimate()
-         .into(new GlideDrawableImageViewTarget(this) {
+         .into(new GlideDrawableImageViewTarget(imageView) {
            @Override protected void setResource(GlideDrawable resource) {
              super.setResource(resource);
-             attacher.update();
+             imageViewAttacher.update();
            }
          });
   }
+
+  private void setSubsamplingImageViewUri(Uri uri) {
+    subsamplingImageView.setVisibility(View.VISIBLE);
+    imageView.setVisibility(View.GONE);
+
+    subsamplingImageView.setImage(ImageSource.uri(uri));
+  }
+
+
+  public void cleanup() {
+    imageView.setImageDrawable(null);
+    subsamplingImageView.recycle();
+  }
 }

src/org/thoughtcrime/securesms/components/subsampling/AttachmentBitmapDecoder.java

@@ -0,0 +1,52 @@
+package org.thoughtcrime.securesms.components.subsampling;
+
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Rect;
+import android.net.Uri;
+
+import com.davemorrissey.labs.subscaleview.decoder.ImageDecoder;
+import com.davemorrissey.labs.subscaleview.decoder.SkiaImageDecoder;
+
+import org.thoughtcrime.securesms.crypto.MasterSecret;
+import org.thoughtcrime.securesms.mms.PartAuthority;
+import org.thoughtcrime.securesms.service.KeyCachingService;
+
+import java.io.InputStream;
+
+public class AttachmentBitmapDecoder implements ImageDecoder{
+
+  @Override
+  public Bitmap decode(Context context, Uri uri) throws Exception {
+    if (!PartAuthority.isLocalUri(uri)) {
+      return new SkiaImageDecoder().decode(context, uri);
+    }
+
+    MasterSecret masterSecret = KeyCachingService.getMasterSecret(context);
+
+    if (masterSecret == null) {
+      throw new IllegalStateException("Can't decode without secret");
+    }
+
+    InputStream inputStream = PartAuthority.getAttachmentStream(context, masterSecret, uri);
+
+    try {
+      BitmapFactory.Options options = new BitmapFactory.Options();
+      options.inPreferredConfig = Bitmap.Config.ARGB_8888;
+
+      Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, options);
+
+      if (bitmap == null) {
+        throw new RuntimeException("Skia image region decoder returned null bitmap - image format may not be supported");
+      }
+
+      return bitmap;
+    } finally {
+      if (inputStream != null) inputStream.close();
+    }
+  }
+
+
+}

src/org/thoughtcrime/securesms/components/subsampling/AttachmentRegionDecoder.java

@@ -0,0 +1,95 @@
+package org.thoughtcrime.securesms.components.subsampling;
+
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapRegionDecoder;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.net.Uri;
+import android.os.Build;
+import android.support.annotation.RequiresApi;
+import android.util.Log;
+
+import com.davemorrissey.labs.subscaleview.decoder.ImageRegionDecoder;
+import com.davemorrissey.labs.subscaleview.decoder.SkiaImageRegionDecoder;
+
+import org.thoughtcrime.securesms.crypto.MasterSecret;
+import org.thoughtcrime.securesms.mms.PartAuthority;
+import org.thoughtcrime.securesms.service.KeyCachingService;
+
+import java.io.InputStream;
+
+public class AttachmentRegionDecoder implements ImageRegionDecoder {
+
+  private static final String TAG = AttachmentRegionDecoder.class.getName();
+
+  private SkiaImageRegionDecoder passthrough;
+
+  private BitmapRegionDecoder bitmapRegionDecoder;
+
+  @RequiresApi(api = Build.VERSION_CODES.GINGERBREAD_MR1)
+  @Override
+  public Point init(Context context, Uri uri) throws Exception {
+    Log.w(TAG, "Init!");
+    if (!PartAuthority.isLocalUri(uri)) {
+      passthrough = new SkiaImageRegionDecoder();
+      return passthrough.init(context, uri);
+    }
+
+    MasterSecret masterSecret = KeyCachingService.getMasterSecret(context);
+
+    if (masterSecret == null) {
+      throw new IllegalStateException("No master secret available...");
+    }
+
+    InputStream inputStream = PartAuthority.getAttachmentStream(context, masterSecret, uri);
+
+    this.bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
+    inputStream.close();
+
+    return new Point(bitmapRegionDecoder.getWidth(), bitmapRegionDecoder.getHeight());
+  }
+
+  @RequiresApi(api = Build.VERSION_CODES.GINGERBREAD_MR1)
+  @Override
+  public Bitmap decodeRegion(Rect rect, int sampleSize) {
+    Log.w(TAG, "Decode region: " + rect);
+
+    if (passthrough != null) {
+      return passthrough.decodeRegion(rect, sampleSize);
+    }
+
+    synchronized(this) {
+      BitmapFactory.Options options = new BitmapFactory.Options();
+      options.inSampleSize      = sampleSize;
+      options.inPreferredConfig = Bitmap.Config.RGB_565;
+
+      Bitmap bitmap = bitmapRegionDecoder.decodeRegion(rect, options);
+
+      if (bitmap == null) {
+        throw new RuntimeException("Skia image decoder returned null bitmap - image format may not be supported");
+      }
+
+      return bitmap;
+    }
+  }
+
+  @RequiresApi(api = Build.VERSION_CODES.GINGERBREAD_MR1)
+  public boolean isReady() {
+    Log.w(TAG, "isReady");
+    return (passthrough != null && passthrough.isReady()) ||
+           (bitmapRegionDecoder != null && !bitmapRegionDecoder.isRecycled());
+  }
+
+  @RequiresApi(api = Build.VERSION_CODES.GINGERBREAD_MR1)
+  public void recycle() {
+    if (passthrough != null) {
+      passthrough.recycle();
+      passthrough = null;
+    } else {
+      bitmapRegionDecoder.recycle();
+    }
+  }
+}

src/org/thoughtcrime/securesms/mms/AttachmentManager.java

@@ -332,6 +332,7 @@ public class AttachmentManager {
     if (MediaPreviewActivity.isContentTypeSupported(slide.getContentType()) && slide.getUri() != null) {
       Intent intent = new Intent(context, MediaPreviewActivity.class);
       intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+      intent.putExtra(MediaPreviewActivity.SIZE_EXTRA, slide.asAttachment().getSize());
       intent.setDataAndType(slide.getUri(), slide.getContentType());
 
       context.startActivity(intent);

src/org/thoughtcrime/securesms/mms/MediaConstraints.java

@@ -49,7 +49,7 @@ public abstract class MediaConstraints {
     }
   }
 
-  public boolean isWithinBounds(Context context, MasterSecret masterSecret, Uri uri) throws IOException {
+  private boolean isWithinBounds(Context context, MasterSecret masterSecret, Uri uri) throws IOException {
     try {
       InputStream is = PartAuthority.getAttachmentStream(context, masterSecret, uri);
       Pair<Integer, Integer> dimensions = BitmapUtil.getDimensions(is);

src/org/thoughtcrime/securesms/mms/PushMediaConstraints.java

@@ -6,7 +6,7 @@ import org.thoughtcrime.securesms.util.Util;
 
 public class PushMediaConstraints extends MediaConstraints {
   private static final int MAX_IMAGE_DIMEN_LOWMEM = 768;
-  private static final int MAX_IMAGE_DIMEN        = 2048;
+  private static final int MAX_IMAGE_DIMEN        = 4096;
   private static final int KB                     = 1024;
   private static final int MB                     = 1024 * KB;
 
@@ -22,12 +22,12 @@ public class PushMediaConstraints extends MediaConstraints {
 
   @Override
   public int getImageMaxSize() {
-    return 4 * MB;
+    return 6 * MB;
   }
 
   @Override
   public int getGifMaxSize() {
-    return 5 * MB;
+    return 6 * MB;
   }
 
   @Override

src/org/thoughtcrime/securesms/util/BitmapUtil.java

@@ -32,6 +32,11 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import javax.microedition.khronos.egl.EGL10;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.egl.EGLContext;
+import javax.microedition.khronos.egl.EGLDisplay;
+
 public class BitmapUtil {
 
   private static final String TAG = BitmapUtil.class.getSimpleName();
@@ -47,10 +52,13 @@ public class BitmapUtil {
     int    quality  = MAX_COMPRESSION_QUALITY;
     int    attempts = 0;
     byte[] bytes;
-    Bitmap scaledBitmap = createScaledBitmap(context,
+
-                                             model,
+    Bitmap scaledBitmap =  Downsampler.AT_MOST.decode(getInputStreamForModel(context, model),
+                                                      Glide.get(context).getBitmapPool(),
                                                       constraints.getImageMaxWidth(context),
-                                             constraints.getImageMaxHeight(context));
+                                                      constraints.getImageMaxHeight(context),
+                                                      DecodeFormat.PREFER_RGB_565);
+
     try {
       do {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
@@ -307,4 +315,34 @@ public class BitmapUtil {
       return result[0];
     }
   }
+
+  public static int getMaxTextureSize() {
+    final int IMAGE_MAX_BITMAP_DIMENSION = 2048;
+
+    EGL10 egl = (EGL10) EGLContext.getEGL();
+    EGLDisplay display = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
+
+    int[] version = new int[2];
+    egl.eglInitialize(display, version);
+
+    int[] totalConfigurations = new int[1];
+    egl.eglGetConfigs(display, null, 0, totalConfigurations);
+
+    EGLConfig[] configurationsList = new EGLConfig[totalConfigurations[0]];
+    egl.eglGetConfigs(display, configurationsList, totalConfigurations[0], totalConfigurations);
+
+    int[] textureSize = new int[1];
+    int maximumTextureSize = 0;
+
+    for (int i = 0; i < totalConfigurations[0]; i++) {
+      egl.eglGetConfigAttrib(display, configurationsList[i], EGL10.EGL_MAX_PBUFFER_WIDTH, textureSize);
+
+      if (maximumTextureSize < textureSize[0])
+        maximumTextureSize = textureSize[0];
+    }
+
+    egl.eglTerminate(display);
+
+    return Math.max(maximumTextureSize, IMAGE_MAX_BITMAP_DIMENSION);
+  }
 }

src/org/thoughtcrime/securesms/util/MediaUtil.java

@@ -9,6 +9,8 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.webkit.MimeTypeMap;
 
+import com.bumptech.glide.Glide;
+
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.crypto.MasterSecret;
@@ -23,6 +25,7 @@ import org.thoughtcrime.securesms.providers.PersistentBlobProvider;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.concurrent.ExecutionException;
 
 import ws.com.google.android.mms.ContentType;
 
@@ -52,8 +55,18 @@ public class MediaUtil {
   private static Bitmap generateImageThumbnail(Context context, MasterSecret masterSecret, Uri uri)
       throws BitmapDecodingException
   {
+    try {
       int maxSize = context.getResources().getDimensionPixelSize(R.dimen.media_bubble_height);
-    return BitmapUtil.createScaledBitmap(context, new DecryptableUri(masterSecret, uri), maxSize, maxSize);
+      return Glide.with(context)
+                  .load(new DecryptableUri(masterSecret, uri))
+                  .asBitmap()
+                  .centerCrop()
+                  .into(maxSize, maxSize)
+                  .get();
+    } catch (InterruptedException | ExecutionException e) {
+      Log.w(TAG, e);
+      throw new BitmapDecodingException(e);
+    }
   }
 
   public static Slide getSlideForAttachment(Context context, Attachment attachment) {