将数据类型TYPE_4BYTE_ABGR的字节数组转换为BufferedImage [英] Convert byte array of data type TYPE_4BYTE_ABGR to BufferedImage

问题描述

我有一个类型为TYPE_4BYTE_ABGR的字节数组，我知道它的宽度和高度，我想将其更改为BufferedImage，有什么想法吗？

I have a byte array with type TYPE_4BYTE_ABGR, and I know its width and height, I want to change it to BufferedImage, any ideas?

推荐答案

效率可能不高，但是 BufferedImage 可以通过以下方式转换为另一种类型：

Might not be very efficient, but a BufferedImage can be converted to another type this way:

public static BufferedImage convertToType(BufferedImage image, int type) {
    BufferedImage newImage = new BufferedImage(image.getWidth(), image.getHeight(), type);
    Graphics2D graphics = newImage.createGraphics();
    graphics.drawImage(image, 0, 0, null);
    graphics.dispose();
    return newImage;
}

关于要实现的方法，您必须知道宽度或图像的高度，将 byte [] 转换为 BufferedImage 。

About the method you want to be implemented, you would have to know the width or height of the image to convert a byte[] to a BufferedImage.

编辑：

一种方法是将 byte [] 转换为 int [] （数据类型 TYPE_INT_ARGB ）并使用 setRGB ：

One way is converting the byte[] to int[] (data type TYPE_INT_ARGB) and using setRGB:

int[] dst = new int[width * height];
for (int i = 0, j = 0; i < dst.length; i++) {
    int a = src[j++] & 0xff;
    int b = src[j++] & 0xff;
    int g = src[j++] & 0xff;
    int r = src[j++] & 0xff;
    dst[i] = (a << 24) | (r << 16) | (g << 8) | b;
}
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
image.setRGB(0, 0, width, height, dst, 0, width);

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