Java CloseableReference.get方法代碼示例

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Override
protected Drawable createDrawable(CloseableReference<CloseableImage> image) {
  Preconditions.checkState(CloseableReference.isValid(image));
  CloseableImage closeableImage = image.get();

  maybeUpdateDebugOverlay(closeableImage);

  Drawable drawable = maybeCreateDrawableFromFactories(mCustomDrawableFactories, closeableImage);
  if (drawable != null) {
    return drawable;
  }

  drawable = maybeCreateDrawableFromFactories(mGlobalDrawableFactories, closeableImage);
  if (drawable != null) {
    return drawable;
  }

  drawable = mDefaultDrawableFactory.createDrawable(closeableImage);
  if (drawable != null) {
    return drawable;
  }
  throw new UnsupportedOperationException("Unrecognized image class: " + closeableImage);
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Converts the given image reference to a bitmap reference
 * and closes the original image reference.
 *
 * @param closeableImage the image to convert. It will be closed afterwards and will be invalid
 * @return the closeable bitmap reference to be used
 */
@VisibleForTesting
@Nullable
static CloseableReference<Bitmap> convertToBitmapReferenceAndClose(
    final @Nullable CloseableReference<CloseableImage> closeableImage) {
  try {
    if (CloseableReference.isValid(closeableImage) &&
        closeableImage.get() instanceof CloseableStaticBitmap) {

      CloseableStaticBitmap closeableStaticBitmap = (CloseableStaticBitmap) closeableImage.get();
      if (closeableStaticBitmap != null) {
        // We return a clone of the underlying bitmap reference that has to be manually closed
        // and then close the passed CloseableStaticBitmap in order to preserve correct
        // cache size calculations.
        return closeableStaticBitmap.cloneUnderlyingBitmapReference();
      }
    }
    // Not a bitmap reference, so we return null
    return null;
  } finally {
    CloseableReference.closeSafely(closeableImage);
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Decodes a GIF into a CloseableImage.
 * @param encodedImage encoded image (native byte array holding the encoded bytes and meta data)
 * @param options the options for the decode
 * @param bitmapConfig the Bitmap.Config used to generate the output bitmaps
 * @return a {@link CloseableImage} for the GIF image
 */
public CloseableImage decodeGif(
    final EncodedImage encodedImage,
    final ImageDecodeOptions options,
    final Bitmap.Config bitmapConfig) {
  if (sGifAnimatedImageDecoder == null) {
    throw new UnsupportedOperationException("To encode animated gif please add the dependency " +
        "to the animated-gif module");
  }
  final CloseableReference<PooledByteBuffer> bytesRef = encodedImage.getByteBufferRef();
  Preconditions.checkNotNull(bytesRef);
  try {
    final PooledByteBuffer input = bytesRef.get();
    AnimatedImage gifImage = sGifAnimatedImageDecoder.decode(input.getNativePtr(), input.size());

    return getCloseableImage(options, gifImage, bitmapConfig);
  } finally {
    CloseableReference.closeSafely(bytesRef);
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Decode a WebP into a CloseableImage.
 * @param encodedImage encoded image (native byte array holding the encoded bytes and meta data)
 * @param options the options for the decode
 * @param bitmapConfig the Bitmap.Config used to generate the output bitmaps
 * @return a {@link CloseableImage} for the WebP image
 */
public CloseableImage decodeWebP(
    final EncodedImage encodedImage,
    final ImageDecodeOptions options,
    final Bitmap.Config bitmapConfig) {
  if (sWebpAnimatedImageDecoder == null) {
    throw new UnsupportedOperationException("To encode animated webp please add the dependency " +
        "to the animated-webp module");
  }
  final CloseableReference<PooledByteBuffer> bytesRef = encodedImage.getByteBufferRef();
  Preconditions.checkNotNull(bytesRef);
  try {
    final PooledByteBuffer input = bytesRef.get();
    AnimatedImage webPImage = sWebpAnimatedImageDecoder.decode(
        input.getNativePtr(),
        input.size());
    return getCloseableImage(options, webPImage, bitmapConfig);
  } finally {
    CloseableReference.closeSafely(bytesRef);
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Creates a bitmap with the specified width and height.  Its initial density is
 * determined from the given DisplayMetrics.
 *
 * @param display Display metrics for the display this bitmap will be drawn on
 * @param colors The colors to write to the bitmap
 * @param offset The index of the first color to read from colors[]
 * @param stride The number of colors in pixels[] to skip between rows.
 * @param width The width of the bitmap
 * @param height The height of the bitmap
 * @param config The bitmap config to create
 * @param callerContext the Tag to track who create the Bitmap
 * @return a reference to the bitmap
 * @throws IllegalArgumentException if the width or height are <= 0
 * @throws TooManyBitmapsException if the pool is full
 * @throws java.lang.OutOfMemoryError if the Bitmap cannot be allocated
 */
public CloseableReference<Bitmap> createBitmap(
    DisplayMetrics display,
    int[] colors,
    int offset,
    int stride,
    int width,
    int height,
    Bitmap.Config config,
    @Nullable Object callerContext) {
  CloseableReference<Bitmap> bitmapRef = createBitmap(
      display,
      width,
      height,
      config,
      callerContext);
  Bitmap bitmap = bitmapRef.get();
  bitmap.setPixels(colors, offset, stride, 0, 0, width, height);
  return bitmapRef;
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Returns an InputStream from the internal InputStream Supplier if it's not null. Otherwise
 * returns an InputStream for the internal buffer reference if valid and null otherwise.
 *
 * <p>The caller has to close the InputStream after using it.
 */
public InputStream getInputStream() {
  if (mInputStreamSupplier != null) {
    return mInputStreamSupplier.get();
  }
  CloseableReference<PooledByteBuffer> pooledByteBufferRef =
      CloseableReference.cloneOrNull(mPooledByteBufferRef);
  if (pooledByteBufferRef != null) {
    try {
      return new PooledByteBufferInputStream(pooledByteBufferRef.get());
    } finally {
      CloseableReference.closeSafely(pooledByteBufferRef);
    }
  }
  return null;
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Returns first n bytes of encoded image as hexbytes
 *
 * @param length the number of bytes to return
 */
public String getFirstBytesAsHexString(int length) {
  CloseableReference<PooledByteBuffer> imageBuffer = getByteBufferRef();
  if (imageBuffer == null) {
    return "";
  }
  int imageSize = getSize();
  int resultSampleSize = Math.min(imageSize, length);
  byte[] bytesBuffer = new byte[resultSampleSize];
  try {
    PooledByteBuffer pooledByteBuffer = imageBuffer.get();
    if (pooledByteBuffer == null) {
      return "";
    }
    pooledByteBuffer.read(0, bytesBuffer, 0, resultSampleSize);
  } finally {
    imageBuffer.close();
  }
  StringBuilder stringBuilder = new StringBuilder(bytesBuffer.length * 2);
  for (byte b : bytesBuffer) {
    stringBuilder.append(String.format("%02X", b));
  }
  return stringBuilder.toString();
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Decodes a byteArray into a purgeable bitmap
 *
 * @param bytesRef the byte buffer that contains the encoded bytes
 * @return
 */
@Override
protected Bitmap decodeByteArrayAsPurgeable(
    CloseableReference<PooledByteBuffer> bytesRef,
    BitmapFactory.Options options) {
  final PooledByteBuffer pooledByteBuffer = bytesRef.get();
  final int length = pooledByteBuffer.size();
  final CloseableReference<byte[]> encodedBytesArrayRef = mFlexByteArrayPool.get(length);
  try {
    final byte[] encodedBytesArray = encodedBytesArrayRef.get();
    pooledByteBuffer.read(0, encodedBytesArray, 0, length);
    Bitmap bitmap = BitmapFactory.decodeByteArray(
        encodedBytesArray,
        0,
        length,
        options);
    return Preconditions.checkNotNull(bitmap, "BitmapFactory returned null");
  } finally {
    CloseableReference.closeSafely(encodedBytesArrayRef);
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Override
public CloseableReference<Bitmap> process(
    Bitmap sourceBitmap,
    PlatformBitmapFactory bitmapFactory) {
  final CloseableReference<Bitmap> bitmapRef = bitmapFactory.createBitmap(
      sourceBitmap.getWidth() / SCALE_RATIO,
      sourceBitmap.getHeight() / SCALE_RATIO);

  try {
    final Bitmap destBitmap = bitmapRef.get();
    final Canvas canvas = new Canvas(destBitmap);

    canvas.drawBitmap(
        sourceBitmap,
        null,
        new Rect(0, 0, destBitmap.getWidth(), destBitmap.getHeight()),
        mPaint);

    NativeBlurFilter.iterativeBoxBlur(destBitmap, mIterations, mBlurRadius / SCALE_RATIO);

    return CloseableReference.cloneOrNull(bitmapRef);
  } finally {
    CloseableReference.closeSafely(bitmapRef);
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
/**
 * Removes key-value from the StagingArea. Both key and value must match.
 * @param key
 * @param encodedImage value corresponding to key
 * @return true if item was removed
 */
public synchronized boolean remove(final CacheKey key, final EncodedImage encodedImage) {
  Preconditions.checkNotNull(key);
  Preconditions.checkNotNull(encodedImage);
  Preconditions.checkArgument(EncodedImage.isValid(encodedImage));

  final EncodedImage oldValue = mMap.get(key);

  if (oldValue == null) {
    return false;
  }

  CloseableReference<PooledByteBuffer> oldRef = oldValue.getByteBufferRef();
  CloseableReference<PooledByteBuffer> ref = encodedImage.getByteBufferRef();
  try {
    if (oldRef == null || ref == null || oldRef.get() != ref.get()) {
      return false;
    }
    mMap.remove(key);
  } finally {
    CloseableReference.closeSafely(ref);
    CloseableReference.closeSafely(oldRef);
    EncodedImage.closeSafely(oldValue);
  }

  logStats();
  return true;
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
private void internalPrepareBitmap(CloseableReference<CloseableImage> newResult) {
  if (newResult == null || !newResult.isValid()) {
    return;
  }

  final CloseableImage closeableImage = newResult.get();
  if (closeableImage == null || closeableImage.isClosed()) {
    return;
  }

  if (closeableImage instanceof CloseableStaticBitmap) {
    final CloseableStaticBitmap staticBitmap = (CloseableStaticBitmap) closeableImage;
    final Bitmap bitmap = staticBitmap.getUnderlyingBitmap();
    if (bitmap == null) {
      return;
    }

    final int bitmapByteCount = bitmap.getRowBytes() * bitmap.getHeight();
    if (bitmapByteCount < mMinBitmapSizeBytes) {
      return;
    }
    if (bitmapByteCount > mMaxBitmapSizeBytes) {
      return;
    }

    bitmap.prepareToDraw();
  }
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Test
public void testGet_Realloc() {
  CloseableReference<byte[]> arrayRef = mArray.get(1);
  final byte[] smallArray = arrayRef.get();
  arrayRef.close();

  arrayRef = mArray.get(7);
  assertEquals(8, arrayRef.get().length);
  assertSame(mArray.mByteArraySoftRef.get(), arrayRef.get());
  assertNotSame(smallArray, arrayRef.get());
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Test
public void testGet_Realloc() {
  CloseableReference<byte[]> arrayRef = mPool.get(1);
  final byte[] smallArray = arrayRef.get();
  arrayRef.close();

  arrayRef = mPool.get(7);
  assertEquals(8, arrayRef.get().length);
  assertNotSame(smallArray, arrayRef.get());
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Override
protected ImageInfo getImageInfo(CloseableReference<CloseableImage> image) {
  Preconditions.checkState(CloseableReference.isValid(image));
  return image.get();
}
 

import com.facebook.common.references.CloseableReference; //導入方法依賴的package包/類
@Override
public void onNewResult(DataSource<CloseableReference<CloseableImage>> dataSource) {
  if (!dataSource.isFinished()) {
    // only interested in final image, no need to close the dataSource
    return;
  }

  try {
    if (mDataSource != dataSource) {
      // Shouldn't ever happen, but let's be safe (dataSource got closed by callback still fired?)
      return;
    }

    mDataSource = null;

    CloseableReference<CloseableImage> imageReference = dataSource.getResult();
    if (imageReference == null) {
      // Shouldn't ever happen, but let's be safe (dataSource got closed by callback still fired?)
      return;
    }

    CloseableImage image = imageReference.get();
    if (!(image instanceof CloseableBitmap)) {
      // only bitmaps are supported
      imageReference.close();
      return;
    }

    mImageRef = imageReference;

    Bitmap bitmap = getBitmap();
    if (bitmap == null) {
      // Shouldn't ever happen, but let's be safe.
      return;
    }

    BitmapUpdateListener listener = Assertions.assumeNotNull(mBitmapUpdateListener);
    listener.onBitmapReady(bitmap);
    listener.onImageLoadEvent(ImageLoadEvent.ON_LOAD);
    listener.onImageLoadEvent(ImageLoadEvent.ON_LOAD_END);
  } finally {
    dataSource.close();
  }
}