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

The following examples show how to use android.graphics.BitmapRegionDecoder#newInstance() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

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();
  }
}

Example 2

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();
}

Example 3

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;
    }
}

Example 4

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();
}

Example 5

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());
}

Example 6

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;
    }
}

Example 7

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;
    }
}

Example 8

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();
}

Example 9

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;
}

Example 10

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();
    }


}

Example 11

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;
}

Example 12

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;
}

Example 13

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;
}

Example 14

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());
}

Example 15

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();
        }
    }
}

Example 16

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());
}

Example 17

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;
}

Example 18

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());
}

Example 19

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);
}

Example 20

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());
}