Android5.0 Camera2 ImageReader 读取YUV格式转为RGB格式的方法
本工程提取于tzutalin/dlib-android
在双Cortex-A72大核+四Cortex-A53小核(RK3399)下处理640x480图片平均耗时22ms
不同方法性能比较见 http://blog.mclover.cn/archives/206.html
1.将so库放到jniLibs文件夹下
2.将src中代码放入工程
3.在Application或入口Activity中加入
static{
System.loadLibrary("ImageConvert");
}
static{
System.loadLibrary("ImageConvert");
}
public void onImageAvailable(ImageReader reader) {
Image image = reader.acquireLatestImage();
Image.Plane[] plane = image.getPlanes();
byte[][] mYUVBytes = new byte[plane.length][];
for (int i = 0; i < plane.length; ++i) {
mYUVBytes[i] = new byte[plane[i].getBuffer().capacity()];
}
int[] mRGBBytes = new int[640 * 480];
for (int i = 0; i < plane.length; ++i) {
plane[i].getBuffer().get(mYUVBytes[i]);
}
final int yRowStride = plane[0].getRowStride();
final int uvRowStride = plane[1].getRowStride();
final int uvPixelStride = plane[1].getPixelStride();
ImageConvert.convertYUV420ToARGB8888(
mYUVBytes[0],
mYUVBytes[1],
mYUVBytes[2],
mRGBBytes,
image.getWidth(),
image.getHeight(),
yRowStride,
uvRowStride,
uvPixelStride,
false);
Bitmap mRGBframeBitmap = Bitmap.createBitmap(image.getWidth(), image.getHeight(), Bitmap.Config.ARGB_8888);
mRGBframeBitmap.setPixels(mRGBBytes, 0, image.getWidth(), 0, 0, image.getWidth(), image.getHeight());
image.close();
}