Add Bitmap reuse callbacks to FrameSequenceDrawable

Also fixes decoding thread priority, and now correctly handles
unscheduled swap events.

Change-Id: I8397a390ff5d0cbbd5f2f07ab18973fb821c881d

1 files changed, 65 insertions, 19 deletions

diff --git a/framesequence/samples/RastermillSamples/src/com/android/rastermill/samples/AnimatedGifTest.java b/framesequence/samples/RastermillSamples/src/com/android/rastermill/samples/AnimatedGifTest.java
index ea593dc..71f35e6 100644
--- a/framesequence/samples/RastermillSamples/src/com/android/rastermill/samples/AnimatedGifTest.java
+++ b/framesequence/samples/RastermillSamples/src/com/android/rastermill/samples/AnimatedGifTest.java
@@ -16,6 +16,7 @@
 package com.android.rastermill.samples;
 
 import android.app.Activity;
+import android.graphics.Bitmap;
 import android.os.Bundle;
 import android.support.rastermill.FrameSequence;
 import android.support.rastermill.FrameSequenceDrawable;
@@ -24,51 +25,96 @@ import android.widget.ImageView;
 import android.widget.Toast;
 
 import java.io.InputStream;
+import java.util.HashSet;
 
 public class AnimatedGifTest extends Activity {
+    FrameSequenceDrawable mDrawable;
+
+    // This provider is entirely unnecessary, just here to validate the acquire/release process
+    private class CheckingProvider implements FrameSequenceDrawable.BitmapProvider {
+        HashSet<Bitmap> mBitmaps = new HashSet<Bitmap>();
+        @Override
+        public Bitmap acquireBitmap(int minWidth, int minHeight) {
+            Bitmap bitmap =
+                    Bitmap.createBitmap(minWidth + 1, minHeight + 4, Bitmap.Config.ARGB_8888);
+            mBitmaps.add(bitmap);
+            return bitmap;
+        }
+
+        @Override
+        public void releaseBitmap(Bitmap bitmap) {
+            if (!mBitmaps.contains(bitmap)) throw new IllegalStateException();
+            mBitmaps.remove(bitmap);
+            bitmap.recycle();
+        }
+
+        public boolean isEmpty() {
+            return mBitmaps.isEmpty();
+        }
+    }
+
+    final CheckingProvider mProvider = new CheckingProvider();
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         setContentView(R.layout.basic_test_activity);
-        ImageView imageView = (ImageView) findViewById(R.id.imageview);
-
-        InputStream is = getResources().openRawResource(R.raw.animated);
-
-        FrameSequence fs = FrameSequence.decodeStream(is);
-        final FrameSequenceDrawable drawable = new FrameSequenceDrawable(fs);
-        drawable.setOnFinishedListener(new FrameSequenceDrawable.OnFinishedListener() {
-            @Override
-            public void onFinished(FrameSequenceDrawable drawable) {
-                Toast.makeText(getApplicationContext(),
-                        "THE ANIMATION HAS FINISHED", Toast.LENGTH_SHORT).show();
-            }
-        });
-        imageView.setImageDrawable(drawable);
-
         findViewById(R.id.start).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                drawable.start();
+                mDrawable.start();
             }
         });
         findViewById(R.id.stop).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                drawable.stop();
+                mDrawable.stop();
             }
         });
         findViewById(R.id.vis).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                drawable.setVisible(true, true);
+                mDrawable.setVisible(true, true);
             }
         });
         findViewById(R.id.invis).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                drawable.setVisible(false, true);
+                mDrawable.setVisible(false, true);
             }
         });
     }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        ImageView imageView = (ImageView) findViewById(R.id.imageview);
+        InputStream is = getResources().openRawResource(R.raw.animated);
+
+        FrameSequence fs = FrameSequence.decodeStream(is);
+        mDrawable = new FrameSequenceDrawable(fs, mProvider);
+        mDrawable.setOnFinishedListener(new FrameSequenceDrawable.OnFinishedListener() {
+            @Override
+            public void onFinished(FrameSequenceDrawable drawable) {
+                Toast.makeText(getApplicationContext(),
+                        "THE ANIMATION HAS FINISHED", Toast.LENGTH_SHORT).show();
+            }
+        });
+        imageView.setImageDrawable(mDrawable);
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        ImageView imageView = (ImageView) findViewById(R.id.imageview);
+
+        mDrawable.recycle(mProvider);
+        if (!mProvider.isEmpty()) throw new IllegalStateException("All bitmaps not recycled");
+
+        mDrawable = null;
+        imageView.setImageDrawable(null);
+
+    }
 }