解决了拍照慢，但是有旋转

app/src/main/java/com/miekir/ocr/tool/ImageUtil.java

@@ -7,7 +7,6 @@ import android.media.Image;
 
 import java.io.ByteArrayOutputStream;
 import java.nio.ByteBuffer;
-import java.nio.ReadOnlyBufferException;
 
 public final class ImageUtil {
 
@@ -56,73 +55,7 @@ public final class ImageUtil {
     }
 
 
-    private static byte[] YUV_420_888toNV21Accept(Image image) {
-        int width = image.getWidth();
-        int height = image.getHeight();
-        int ySize = width * height;
-        int uvSize = width * height / 4;
 
-        byte[] nv21 = new byte[ySize + uvSize * 2];
-
-        ByteBuffer yBuffer = image.getPlanes()[0].getBuffer(); // Y
-        ByteBuffer uBuffer = image.getPlanes()[1].getBuffer(); // U
-        ByteBuffer vBuffer = image.getPlanes()[2].getBuffer(); // V
-
-        int rowStride = image.getPlanes()[0].getRowStride();
-        assert (image.getPlanes()[0].getPixelStride() == 1);
-
-        int pos = 0;
-
-        if (rowStride == width) { // likely
-            yBuffer.get(nv21, 0, ySize);
-            pos += ySize;
-        } else {
-            int yBufferPos = width - rowStride; // not an actual position
-            for (; pos < ySize; pos += width) {
-                yBufferPos += rowStride - width;
-                yBuffer.position(yBufferPos);
-                yBuffer.get(nv21, pos, width);
-            }
-        }
-
-        rowStride = image.getPlanes()[2].getRowStride();
-        int pixelStride = image.getPlanes()[2].getPixelStride();
-
-        assert (rowStride == image.getPlanes()[1].getRowStride());
-        assert (pixelStride == image.getPlanes()[1].getPixelStride());
-
-        if (pixelStride == 2 && rowStride == width && uBuffer.get(0) == vBuffer.get(1)) {
-            // maybe V an U planes overlap as per NV21, which means vBuffer[1] is alias of uBuffer[0]
-            byte savePixel = vBuffer.get(1);
-            try {
-                vBuffer.put(1, (byte) ~savePixel);
-                if (uBuffer.get(0) == (byte) ~savePixel) {
-                    vBuffer.put(1, savePixel);
-                    vBuffer.get(nv21, ySize, uvSize);
-
-                    return nv21; // shortcut
-                }
-
-
-                // unfortunately, the check failed. We must save U and V pixel by pixel
-                vBuffer.put(1, savePixel);
-            } catch (ReadOnlyBufferException ex) {
-                // unfortunately, we cannot check if vBuffer and uBuffer overlap
-            }
-
-            // other optimizations could check if (pixelStride == 1) or (pixelStride == 2),
-            // but performance gain would be less significant
-
-            for (int row = 0; row < height / 2; row++) {
-                for (int col = 0; col < width / 2; col++) {
-                    int vuPos = col * pixelStride + row * rowStride;
-                    nv21[pos++] = vBuffer.get(vuPos);
-                    nv21[pos++] = uBuffer.get(vuPos);
-                }
-            }
-        }
-        return nv21;
-    }
 
 
 }