android.graphics.BitmapRegionDecoder#newInstance

Source File: ImageEditingManager.java From react-native-GPay with MIT License

8 votes

/**
 * Reads and crops the bitmap.
 * @param outOptions Bitmap options, useful to determine {@code outMimeType}.
 */
private Bitmap crop(BitmapFactory.Options outOptions) throws IOException {
  InputStream inputStream = openBitmapInputStream();
  // Effeciently crops image without loading full resolution into memory
  // https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html
  BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance(inputStream, false);
  try {
    Rect rect = new Rect(mX, mY, mX + mWidth, mY + mHeight);
    return decoder.decodeRegion(rect, outOptions);
  } finally {
    if (inputStream != null) {
      inputStream.close();
    }
    decoder.recycle();
  }
}

Source File: BigView.java From long_picture_view with Apache License 2.0

6 votes

/**
 * 由使用者输入一张图片
 */
public void setImage(InputStream is) {
    //先读取原图片的信息   高，宽
    mOptions.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(is, null, mOptions);
    mImageWidth = mOptions.outWidth;
    mImageHeight = mOptions.outHeight;
    //开启复用
    mOptions.inMutable = true;
    //设置格式成RGB_565
    mOptions.inPreferredConfig = Bitmap.Config.RGB_565;
    mOptions.inJustDecodeBounds = false;

    //创建一个区域解码器
    try {
        mDecoder = BitmapRegionDecoder.newInstance(is, false);
    } catch (IOException e) {
        e.printStackTrace();
    }
    requestLayout();
}

Source File: DecodeUtils.java From medialibrary with Apache License 2.0

6 votes

public static BitmapRegionDecoder createBitmapRegionDecoder(
        ThreadPool.JobContext jc, byte[] bytes, int offset, int length,
        boolean shareable) {
    if (offset < 0 || length <= 0 || offset + length > bytes.length) {
        throw new IllegalArgumentException(String.format(
                "offset = %s, length = %s, bytes = %s",
                offset, length, bytes.length));
    }

    try {
        return BitmapRegionDecoder.newInstance(
                bytes, offset, length, shareable);
    } catch (Throwable t)  {
        Log.w(TAG, t);
        return null;
    }
}

Source File: ColorExtractionService.java From LaunchEnr with GNU General Public License v3.0

5 votes

@TargetApi(Build.VERSION_CODES.N)
private Palette getHotseatPalette() {
    WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
    if (AndroidVersion.isAtLeastNougat) {
        try (ParcelFileDescriptor fd = wallpaperManager
                .getWallpaperFile(WallpaperManager.FLAG_SYSTEM)) {
            BitmapRegionDecoder decoder = BitmapRegionDecoder
                    .newInstance(fd.getFileDescriptor(), false);
            int height = decoder.getHeight();
            Rect decodeRegion = new Rect(0, (int) (height * (1f - HOTSEAT_FRACTION)),
                    decoder.getWidth(), height);
            Bitmap bitmap = decoder.decodeRegion(decodeRegion, null);
            decoder.recycle();
            if (bitmap != null) {
                return Palette.from(bitmap).clearFilters().generate();
            }
        } catch (IOException | NullPointerException e) {
            e.printStackTrace();
        }
    }

    Bitmap wallpaper = ((BitmapDrawable) wallpaperManager.getDrawable()).getBitmap();
    return Palette.from(wallpaper)
            .setRegion(0, (int) (wallpaper.getHeight() * (1f - HOTSEAT_FRACTION)),
                    wallpaper.getWidth(), wallpaper.getHeight())
            .clearFilters()
            .generate();
}

Source File: AttachmentRegionDecoder.java From deltachat-android with GNU General Public License v3.0

5 votes

@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);
  }

  InputStream inputStream = PartAuthority.getAttachmentStream(context, uri);

  this.bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
  inputStream.close();

  return new Point(bitmapRegionDecoder.getWidth(), bitmapRegionDecoder.getHeight());
}

Source File: DecodeUtils.java From medialibrary with Apache License 2.0

5 votes

public static BitmapRegionDecoder createBitmapRegionDecoder(
        ThreadPool.JobContext jc, InputStream is, boolean shareable) {
    try {
        return BitmapRegionDecoder.newInstance(is, shareable);
    } catch (Throwable t)  {
        // We often cancel the creating of bitmap region decoder,
        // so just log one line.
        Log.w(TAG, "requestCreateBitmapRegionDecoder: " + t);
        return null;
    }
}

Source File: DecodeUtils.java From medialibrary with Apache License 2.0

5 votes

public static BitmapRegionDecoder createBitmapRegionDecoder(
        ThreadPool.JobContext jc, FileDescriptor fd, boolean shareable) {
    try {
        return BitmapRegionDecoder.newInstance(fd, shareable);
    } catch (Throwable t)  {
        Log.w(TAG, t);
        return null;
    }
}

Source File: DecoderDrawable.java From Dashchan with Apache License 2.0

5 votes

public DecoderDrawable(Bitmap scaledBitmap, FileHolder fileHolder) throws IOException {
	this.scaledBitmap = scaledBitmap;
	if (!fileHolder.isRegionDecoderSupported()) {
		throw new IOException("Decoder drawable is not supported");
	}
	decoder = BitmapRegionDecoder.newInstance(fileHolder.openInputStream(), false);
	rotation = fileHolder.getRotation();
	width = fileHolder.getImageWidth();
	height = fileHolder.getImageHeight();
}

Source File: BitmapRegionTileSource.java From Trebuchet with GNU General Public License v3.0

5 votes

public static SimpleBitmapRegionDecoderWrapper newInstance(
        InputStream is, boolean isShareable) {
    try {
        BitmapRegionDecoder d = BitmapRegionDecoder.newInstance(is, isShareable);
        if (d != null) {
            return new SimpleBitmapRegionDecoderWrapper(d);
        }
    } catch (IOException e) {
        Log.w("BitmapRegionTileSource", "getting decoder failed", e);
        return null;
    }
    return null;
}

Source File: LargeImageViewSimpleBak.java From Android_Blog_Demos with Apache License 2.0

5 votes

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_large_image_view);

    mImageView = (ImageView) findViewById(R.id.id_imageview);
    try
    {
        InputStream inputStream = getAssets().open("tangyan.jpg");

        //获得图片的宽、高
        BitmapFactory.Options tmpOptions = new BitmapFactory.Options();
        tmpOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(inputStream, null, tmpOptions);
        int width = tmpOptions.outWidth;
        int height = tmpOptions.outHeight;

        //设置显示图片的中心区域
        BitmapRegionDecoder bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPreferredConfig = Bitmap.Config.RGB_565;
        Bitmap bitmap = bitmapRegionDecoder.decodeRegion(new Rect(width / 2 - 100, height / 2 - 100, width / 2 + 100, height / 2 + 100), options);
        mImageView.setImageBitmap(bitmap);


    } catch (IOException e)
    {
        e.printStackTrace();
    }


}

Source File: BitmapRegionTileSource.java From LB-Launcher with Apache License 2.0

5 votes

public static SimpleBitmapRegionDecoderWrapper newInstance(
        InputStream is, boolean isShareable) {
    try {
        BitmapRegionDecoder d = BitmapRegionDecoder.newInstance(is, isShareable);
        if (d != null) {
            return new SimpleBitmapRegionDecoderWrapper(d);
        }
    } catch (IOException e) {
        Log.w("BitmapRegionTileSource", "getting decoder failed", e);
        return null;
    }
    return null;
}

Source File: FileHolder.java From Dashchan with Apache License 2.0

5 votes

private Bitmap readBitmapInternal(BitmapFactory.Options options, boolean mayUseRegionDecoder,
		boolean mayUseWebViewDecoder) {
	ImageData imageData = getImageData();
	if (imageData.type == ImageType.NOT_IMAGE) {
		return null;
	}
	if (imageData.type != ImageType.IMAGE_SVG) {
		Bitmap bitmap = readBitmapSimple(options);
		if (bitmap != null) {
			return bitmap;
		}
		if (mayUseRegionDecoder && isRegionDecoderSupported()) {
			InputStream input = null;
			BitmapRegionDecoder decoder = null;
			try {
				input = openInputStream();
				decoder = BitmapRegionDecoder.newInstance(input, false);
				return decoder.decodeRegion(new Rect(0, 0, decoder.getWidth(), decoder.getHeight()), options);
			} catch (IOException e) {
				Log.persistent().stack(e);
			} finally {
				IOUtils.close(input);
				if (decoder != null) {
					decoder.recycle();
				}
			}
		}
	}
	if (mayUseWebViewDecoder) {
		return WebViewBitmapDecoder.loadBitmap(this, options);
	}
	return null;
}

Source File: BitmapRegionTileSource.java From LB-Launcher with Apache License 2.0

5 votes

public static SimpleBitmapRegionDecoderWrapper newInstance(
        String pathName, boolean isShareable) {
    try {
        BitmapRegionDecoder d = BitmapRegionDecoder.newInstance(pathName, isShareable);
        if (d != null) {
            return new SimpleBitmapRegionDecoderWrapper(d);
        }
    } catch (IOException e) {
        Log.w("BitmapRegionTileSource", "getting decoder failed for path " + pathName, e);
        return null;
    }
    return null;
}

Source File: AttachmentRegionDecoder.java From mollyim-android with GNU General Public License v3.0

5 votes

@Override
public Point init(Context context, Uri uri) throws Exception {
  Log.d(TAG, "Init!");
  if (!PartAuthority.isLocalUri(uri)) {
    passthrough = new SkiaImageRegionDecoder();
    return passthrough.init(context, uri);
  }

  InputStream inputStream = PartAuthority.getAttachmentStream(context, uri);

  this.bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
  inputStream.close();

  return new Point(bitmapRegionDecoder.getWidth(), bitmapRegionDecoder.getHeight());
}

Source File: ClipImgActivity.java From Tok-Android with GNU General Public License v3.0

4 votes

private Bitmap createClippedBitmap() {
    //if (mSampleSize <= 1) {
    // TODO has problem, this method is not useful on some picture
    //    return mClipImageView.clip();
    //}

    final float[] matrixValues = mClipImageView.getClipMatrixValues();
    final float scale = matrixValues[Matrix.MSCALE_X];
    final float transX = matrixValues[Matrix.MTRANS_X];
    final float transY = matrixValues[Matrix.MTRANS_Y];

    final Rect border = mClipImageView.getClipBorder();
    final float cropX = ((-transX + border.left) / scale) * mSampleSize;
    final float cropY = ((-transY + border.top) / scale) * mSampleSize;
    final float cropWidth = (border.width() / scale) * mSampleSize;
    final float cropHeight = (border.height() / scale) * mSampleSize;

    final RectF srcRect = new RectF(cropX, cropY, cropX + cropWidth, cropY + cropHeight);
    final Rect clipRect = getRealRect(srcRect);

    final BitmapFactory.Options ops = new BitmapFactory.Options();
    final Matrix outputMatrix = new Matrix();

    outputMatrix.setRotate(mDegree);
    if (mMaxWidth > 0 && cropWidth > mMaxWidth) {
        ops.inSampleSize = findBestSample((int) cropWidth, mMaxWidth);

        final float outputScale = mMaxWidth / (cropWidth / ops.inSampleSize);
        outputMatrix.postScale(outputScale, outputScale);
    }

    BitmapRegionDecoder decoder = null;
    try {
        decoder = BitmapRegionDecoder.newInstance(mInput, false);
        final Bitmap source = decoder.decodeRegion(clipRect, ops);
        recycleImageViewBitmap();
        return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(),
            outputMatrix, false);
    } catch (Exception e) {
        return mClipImageView.clip();
    } finally {
        if (decoder != null && !decoder.isRecycled()) {
            decoder.recycle();
        }
    }
}

Source File: SkiaImageRegionDecoder.java From PictureSelector with Apache License 2.0

4 votes

@Override
public Point init(Context context, Uri uri) throws Exception {
    String uriString = uri.toString();
    if (uriString.startsWith(RESOURCE_PREFIX)) {
        Resources res;
        String packageName = uri.getAuthority();
        if (context.getPackageName().equals(packageName)) {
            res = context.getResources();
        } else {
            PackageManager pm = context.getPackageManager();
            res = pm.getResourcesForApplication(packageName);
        }

        int id = 0;
        List<String> segments = uri.getPathSegments();
        int size = segments.size();
        if (size == 2 && segments.get(0).equals("drawable")) {
            String resName = segments.get(1);
            id = res.getIdentifier(resName, "drawable", packageName);
        } else if (size == 1 && TextUtils.isDigitsOnly(segments.get(0))) {
            try {
                id = Integer.parseInt(segments.get(0));
            } catch (NumberFormatException ignored) {
            }
        }

        decoder = BitmapRegionDecoder.newInstance(context.getResources().openRawResource(id), false);
    } else if (uriString.startsWith(ASSET_PREFIX)) {
        String assetName = uriString.substring(ASSET_PREFIX.length());
        decoder = BitmapRegionDecoder.newInstance(context.getAssets().open(assetName, AssetManager.ACCESS_RANDOM), false);
    } else if (uriString.startsWith(FILE_PREFIX)) {
        decoder = BitmapRegionDecoder.newInstance(uriString.substring(FILE_PREFIX.length()), false);
    } else {
        InputStream inputStream = null;
        try {
            ContentResolver contentResolver = context.getContentResolver();
            inputStream = contentResolver.openInputStream(uri);
            decoder = BitmapRegionDecoder.newInstance(inputStream, false);
        } finally {
            if (inputStream != null) {
                try { inputStream.close(); } catch (Exception e) { /* Ignore */ }
            }
        }
    }
    return new Point(decoder.getWidth(), decoder.getHeight());
}

Source File: Utils.java From SpotifyTray-Android with MIT License

4 votes

/**
 * Takes an inputstream, loads a bitmap optimized of space and then crops it for the view.
 * @param iStream Inputstream to the image.
 * @param containerHeight Height of the image holder container. 
 * @param containerWidth Width of the image holder container.
 * @return Cropped/masked bitmap.
 */
public static Bitmap loadMaskedBitmap(InputStream iStream, int containerHeight, int containerWidth){
	
	// Load image data before loading the image itself.
	BitmapFactory.Options bmOptions = new BitmapFactory.Options();
	bmOptions.inJustDecodeBounds = true;
	
	BitmapFactory.decodeStream(iStream,null,bmOptions);
	
	int photoH = bmOptions.outHeight;
	int photoW = bmOptions.outWidth;
	
	// Find a suitable scalefactor to load the smaller bitmap, and then set the options.
	int scaleFactor = Math.min(photoH/containerHeight, photoW/containerHeight);
	bmOptions.inJustDecodeBounds = false;
	bmOptions.inSampleSize = scaleFactor;
	bmOptions.inPurgeable = true;

	// Load the square region out of the bitmap.
	Bitmap bmap=null;
	BitmapRegionDecoder decoder;
	try {
		iStream.reset();
		decoder = BitmapRegionDecoder.newInstance(iStream, false);
		bmap = decoder.decodeRegion(new Rect(0, 0, Math.min(photoH, photoW), Math.min(photoH, photoW)),bmOptions);
	} catch (IOException e) {
		e.printStackTrace();
	}
	
	// Calculate new width of the bitmap based on the width of the container
	int bitmapNewWidth = (bmap.getWidth()*containerWidth)/containerHeight;   
	
	// Produce clipping mask on the canvas and draw the bitmap 
	Bitmap targetBitmap = Bitmap.createBitmap(bitmapNewWidth, bmap.getHeight(), bmap.getConfig());
	Canvas canvas = new Canvas(targetBitmap);
	Path path = new Path();
	path.addCircle(bmap.getWidth() / 2, bmap.getHeight() / 2, bmap.getWidth() / 2, Path.Direction.CCW);
	canvas.clipPath(path);
	canvas.drawBitmap(bmap, 0, 0, null);

	// Retrieve the clipped bitmap and return
	return targetBitmap;
}

Source File: SkiaImageRegionDecoder.java From PictureSelector with Apache License 2.0

4 votes

@Override
public Point init(Context context, Uri uri) throws Exception {
    String uriString = uri.toString();
    if (uriString.startsWith(RESOURCE_PREFIX)) {
        Resources res;
        String packageName = uri.getAuthority();
        if (context.getPackageName().equals(packageName)) {
            res = context.getResources();
        } else {
            PackageManager pm = context.getPackageManager();
            res = pm.getResourcesForApplication(packageName);
        }

        int id = 0;
        List<String> segments = uri.getPathSegments();
        int size = segments.size();
        if (size == 2 && segments.get(0).equals("drawable")) {
            String resName = segments.get(1);
            id = res.getIdentifier(resName, "drawable", packageName);
        } else if (size == 1 && TextUtils.isDigitsOnly(segments.get(0))) {
            try {
                id = Integer.parseInt(segments.get(0));
            } catch (NumberFormatException ignored) {
            }
        }

        decoder = BitmapRegionDecoder.newInstance(context.getResources().openRawResource(id), false);
    } else if (uriString.startsWith(ASSET_PREFIX)) {
        String assetName = uriString.substring(ASSET_PREFIX.length());
        decoder = BitmapRegionDecoder.newInstance(context.getAssets().open(assetName, AssetManager.ACCESS_RANDOM), false);
    } else if (uriString.startsWith(FILE_PREFIX)) {
        decoder = BitmapRegionDecoder.newInstance(uriString.substring(FILE_PREFIX.length()), false);
    } else {
        InputStream inputStream = null;
        try {
            ContentResolver contentResolver = context.getContentResolver();
            inputStream = contentResolver.openInputStream(uri);
            decoder = BitmapRegionDecoder.newInstance(inputStream, false);
        } finally {
            if (inputStream != null) {
                try { inputStream.close(); } catch (Exception e) { }
            }
        }
    }
    return new Point(decoder.getWidth(), decoder.getHeight());
}

Source File: SkiaImageRegionDecoder.java From Hentoid with Apache License 2.0

4 votes

@Override
@NonNull
public Point init(Context context, @NonNull Uri uri) throws IOException, PackageManager.NameNotFoundException {
    String uriString = uri.toString();
    if (uriString.startsWith(RESOURCE_PREFIX)) {
        Resources res;
        String packageName = uri.getAuthority();
        if (context.getPackageName().equals(packageName)) {
            res = context.getResources();
        } else {
            PackageManager pm = context.getPackageManager();
            res = pm.getResourcesForApplication(packageName);
        }

        int id = 0;
        List<String> segments = uri.getPathSegments();
        int size = segments.size();
        if (size == 2 && segments.get(0).equals("drawable")) {
            String resName = segments.get(1);
            id = res.getIdentifier(resName, "drawable", packageName);
        } else if (size == 1 && TextUtils.isDigitsOnly(segments.get(0))) {
            try {
                id = Integer.parseInt(segments.get(0));
            } catch (NumberFormatException ignored) {
            }
        }

        decoder = BitmapRegionDecoder.newInstance(context.getResources().openRawResource(id), false);
    } else if (uriString.startsWith(ASSET_PREFIX)) {
        String assetName = uriString.substring(ASSET_PREFIX.length());
        decoder = BitmapRegionDecoder.newInstance(context.getAssets().open(assetName, AssetManager.ACCESS_RANDOM), false);
    } else if (uriString.startsWith(FILE_PREFIX)) {
        decoder = BitmapRegionDecoder.newInstance(uriString.substring(FILE_PREFIX.length()), false);
    } else {
        try (InputStream input = context.getContentResolver().openInputStream(uri)) {
            if (input == null)
                throw new RuntimeException("Content resolver returned null stream. Unable to initialise with uri.");
            decoder = BitmapRegionDecoder.newInstance(input, false);
        }
    }
    if (decoder != null && !decoder.isRecycled()) return new Point(decoder.getWidth(), decoder.getHeight());
    else return new Point(-1, -1);
}

Source File: SkiaImageRegionDecoder.java From PdfViewPager with Apache License 2.0

4 votes

@Override
@NonNull
public Point init(Context context, @NonNull Uri uri) throws Exception {
    String uriString = uri.toString();
    if (uriString.startsWith(RESOURCE_PREFIX)) {
        Resources res;
        String packageName = uri.getAuthority();
        if (context.getPackageName().equals(packageName)) {
            res = context.getResources();
        } else {
            PackageManager pm = context.getPackageManager();
            res = pm.getResourcesForApplication(packageName);
        }

        int id = 0;
        List<String> segments = uri.getPathSegments();
        int size = segments.size();
        if (size == 2 && segments.get(0).equals("drawable")) {
            String resName = segments.get(1);
            id = res.getIdentifier(resName, "drawable", packageName);
        } else if (size == 1 && TextUtils.isDigitsOnly(segments.get(0))) {
            try {
                id = Integer.parseInt(segments.get(0));
            } catch (NumberFormatException ignored) {
            }
        }

        decoder = BitmapRegionDecoder.newInstance(context.getResources().openRawResource(id), false);
    } else if (uriString.startsWith(ASSET_PREFIX)) {
        String assetName = uriString.substring(ASSET_PREFIX.length());
        decoder = BitmapRegionDecoder.newInstance(
                context.getAssets().open(assetName, AssetManager.ACCESS_RANDOM),
                false);
    } else if (uriString.startsWith(FILE_PREFIX)) {
        decoder = BitmapRegionDecoder.newInstance(
                uriString.substring(FILE_PREFIX.length()),
                false);
    } else {
        InputStream inputStream = null;
        try {
            ContentResolver contentResolver = context.getContentResolver();
            inputStream = contentResolver.openInputStream(uri);
            decoder = BitmapRegionDecoder.newInstance(inputStream, false);
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (Exception e) { /* Ignore */ }
            }
        }
    }
    return new Point(decoder.getWidth(), decoder.getHeight());
}

Java Code Examples for android.graphics.BitmapRegionDecoder#newInstance()