효율적으로 카메라 데이터 데이터를bitmap으로 변환
1776 단어 오디오 및 비디오 개발
public class FastYUVtoRGB {
private RenderScript rs;
private ScriptIntrinsicYuvToRGB yuvToRgbIntrinsic;
private Type.Builder yuvType, rgbaType;
private Allocation in, out;
public FastYUVtoRGB(Context context) {
rs = RenderScript.create(context);
yuvToRgbIntrinsic = ScriptIntrinsicYuvToRGB.create(rs, Element.U8_4(rs));
}
public Bitmap convertYUVtoRGB(byte[] yuvData, int width, int height) {
if (yuvType == null) {
yuvType = new Type.Builder(rs, Element.U8(rs)).setX(yuvData.length);
in = Allocation.createTyped(rs, yuvType.create(), Allocation.USAGE_SCRIPT);
rgbaType = new Type.Builder(rs, Element.RGBA_8888(rs)).setX(width).setY(height);
out = Allocation.createTyped(rs, rgbaType.create(), Allocation.USAGE_SCRIPT);
}
in.copyFrom(yuvData);
yuvToRgbIntrinsic.setInput(in);
yuvToRgbIntrinsic.forEach(out);
Bitmap bmpout = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
out.copyTo(bmpout);
return bmpout;
}
// native , 。
//https://blog.csdn.net/q979713444/article/details/80446404
private static Bitmap nv21ToBitmap(byte[] nv21, int width, int height) {
Bitmap bitmap = null;
try {
YuvImage image = new YuvImage(nv21, ImageFormat.NV21, width, height, null);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
image.compressToJpeg(new Rect(0, 0, width, height), 80, stream);
bitmap = BitmapFactory.decodeByteArray(stream.toByteArray(), 0, stream.size());
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
return bitmap;
}
}