Java Utililty Methods BufferedImage to Byte Array

List of utility methods to do BufferedImage to Byte Array

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Description

The list of methods to do BufferedImage to Byte Array are organized into topic(s).

Method

byte[]getByteArray(File file)
get Byte Array 
BufferedImage originalImage = ImageIO.read(file);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(originalImage, "jpg", baos);
baos.flush();
return baos.toByteArray();
byte[]getByteArray(RenderedImage image, String formatName)
get Byte Array 
try {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    ImageIO.write(image, formatName, byteArrayOutputStream);
    return byteArrayOutputStream.toByteArray();
} catch (IOException e) {
    throw new RuntimeException(e);
ByteBuffergetByteBuffer(BufferedImage bufferedImage)
get Byte Buffer 
Raster raster = bufferedImage.getRaster();
DataBufferByte dataBufferByte = (DataBufferByte) raster.getDataBuffer();
byte[] data = dataBufferByte.getData();
ByteBuffer byteBuffer = ByteBuffer.allocateDirect(data.length);
byteBuffer.order(ByteOrder.nativeOrder());
byteBuffer.put(data, 0, data.length);
byteBuffer.flip();
return byteBuffer;
...
BufferedImagegetByteBufferToImage(ByteBuffer buffer, int width, int height)
Converts a ByteBuffer (Used in OpenGL) to a BufferedImage. 
BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
for (int x = 0; x < width; x++)
    for (int y = 0; y < height; y++) {
        int i = (x + (width * y)) * 4;
        int r = buffer.get(i) & 0xFF;
        int g = buffer.get(i + 1) & 0xFF;
        int b = buffer.get(i + 2) & 0xFF;
        img.setRGB(x, height - (y + 1), (0xFF << 24) | (r << 16) | (g << 8) | b);
...
byte[]getByteImage(BufferedImage imagem)
Captura os bytes de um BufferedImage 
if (imagem == null)
    return null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(imagem, "jpg", baos);
byte[] bytes = baos.toByteArray();
return bytes;
byte[]getBytes(BufferedImage image)
get Bytes 
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
    ImageIO.write(image, "png", outputStream);
} catch (IOException e) {
    throw new RuntimeException(e);
return outputStream.toByteArray();
byte[]getBytes(final InputStream is, final int bufferSize)
get Bytes 
final ByteArrayOutputStream out = new ByteArrayOutputStream(bufferSize);
try {
    byte[] buffer = new byte[bufferSize];
    int len;
    while ((len = is.read(buffer)) >= 0) {
        out.write(buffer, 0, len);
} finally {
...
byte[]getBytesFromBufferedImage(BufferedImage bi, String format)
Get bytes from a specified BufferedImage, with the specified format 
ByteArrayOutputStream buff = new ByteArrayOutputStream();
try {
    ImageIO.write(bi, format, buff);
    byte[] bytes = buff.toByteArray();
    buff.close();
    return bytes;
} catch (IOException ex) {
    ex.printStackTrace();
...
byte[]getBytesFromImage(String fileIn, String fileOut)
get Bytes From Image 
byte[] photo = null;
try {
    File file = new File(fileIn);
    BufferedImage imagem = ImageIO.read(file);
    int new_w = 320, new_h = 240;
    BufferedImage new_img = new BufferedImage(new_w, new_h, BufferedImage.SCALE_DEFAULT);
    Graphics2D g = new_img.createGraphics();
    g.drawImage(imagem, 0, 0, new_w, new_h, null);
...
intgetBytesPerPixel(int bufferedImageType)
get Bytes Per Pixel 
switch (bufferedImageType) {
case BufferedImage.TYPE_INT_ARGB:
case BufferedImage.TYPE_INT_ARGB_PRE:
case BufferedImage.TYPE_INT_BGR:
case BufferedImage.TYPE_4BYTE_ABGR:
case BufferedImage.TYPE_4BYTE_ABGR_PRE:
    return 4;
case BufferedImage.TYPE_3BYTE_BGR:
...