到byte[]的android.media图像

Image image = // 获取到android.media.Image对象

// 获取图像数据的平面数组
Image.Plane[] planes = image.getPlanes();

// 创建字节数组缓冲区
int bufferSize = image.getWidth() * image.getHeight() * ImageFormat.getBitsPerPixel(ImageFormat.YUV_420_888) / 8;
byte[] data = new byte[bufferSize];

int offset = 0;
for (int i = 0; i < planes.length; i++) {
    ByteBuffer buffer = planes[i].getBuffer();
    int rowStride = planes[i].getRowStride();
    int pixelStride = planes[i].getPixelStride();

    int planeWidth = (i == 0) ? image.getWidth() : image.getWidth() / 2;
    int planeHeight = (i == 0) ? image.getHeight() : image.getHeight() / 2;

    for (int row = 0; row < planeHeight; row++) {
        for (int col = 0; col < planeWidth; col++) {
            int pixelOffset = col * pixelStride + row * rowStride;
            data[offset++] = buffer.get(pixelOffset);
        }
    }
}

// 现在，data数组中包含了图像数据的字节数组