cleaned up many warnings

src/planar_yuv_luminance_source.rs

@@ -0,0 +1,364 @@
+
+// /*
+//  * Copyright 2013 ZXing authors
+//  *
+//  * Licensed under the Apache License, Version 2.0 (the "License");
+//  * you may not use this file except in compliance with the License.
+//  * You may obtain a copy of the License at
+//  *
+//  *      http://www.apache.org/licenses/LICENSE-2.0
+//  *
+//  * Unless required by applicable law or agreed to in writing, software
+//  * distributed under the License is distributed on an "AS IS" BASIS,
+//  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  * See the License for the specific language governing permissions and
+//  * limitations under the License.
+//  */
+// //package com.google.zxing;
+
+// /**
+//  * A wrapper implementation of {@link LuminanceSource} which inverts the luminances it returns -- black becomes
+//  * white and vice versa, and each value becomes (255-value).
+//  *
+//  * @author Sean Owen
+//  */
+// pub struct InvertedLuminanceSource {
+//     width: usize,
+//     height: usize,
+//     delegate: Box<dyn LuminanceSource>,
+// }
+
+// impl InvertedLuminanceSource {
+//     pub fn new_with_delegate(delegate: Box<dyn LuminanceSource>) -> Self {
+//         Self {
+//             width: delegate.getWidth(),
+//             height: delegate.getHeight(),
+//             delegate,
+//         }
+//     }
+// }
+
+// impl LuminanceSource for InvertedLuminanceSource {
+//     fn getRow(&self, y: usize, row: &Vec<u8>) -> Vec<u8> {
+//         let mut new_row = self.delegate.getRow(y, row);
+//         let width = self.getWidth();
+//         for i in 0..width {
+//             //for (int i = 0; i < width; i++) {
+//             new_row[i] = 255 - (new_row[i] & 0xFF);
+//         }
+//         return new_row;
+//     }
+
+//     fn getMatrix(&self) -> Vec<u8> {
+//         let matrix = self.delegate.getMatrix();
+//         let length = self.getWidth() * self.getHeight();
+//         let mut invertedMatrix = Vec::with_capacity(length);
+//         for i in 0..length {
+//             //for (int i = 0; i < length; i++) {
+//             invertedMatrix[i] = 255 - (matrix[i] & 0xFF);
+//         }
+//         return invertedMatrix;
+//     }
+
+//     fn getWidth(&self) -> usize {
+//         self.width
+//     }
+
+//     fn getHeight(&self) -> usize {
+//         self.height
+//     }
+
+//     fn isCropSupported(&self) -> bool {
+//         return self.delegate.isCropSupported();
+//     }
+
+//     fn crop(
+//         &self,
+//         left: usize,
+//         top: usize,
+//         width: usize,
+//         height: usize,
+//     ) -> Result<Box<dyn LuminanceSource>, UnsupportedOperationException> {
+//         let crop = self.delegate.crop(left, top, width, height)?;
+//         return Ok(Box::new(InvertedLuminanceSource::new_with_delegate(crop)));
+//     }
+
+//     fn isRotateSupported(&self) -> bool {
+//         return self.delegate.isRotateSupported();
+//     }
+
+//     /**
+//      * @return original delegate {@link LuminanceSource} since invert undoes itself
+//      */
+//     fn invert(&self) -> Box<dyn LuminanceSource> {
+//         return self.delegate;
+//     }
+
+//     fn rotateCounterClockwise(
+//         &self,
+//     ) -> Result<Box<dyn LuminanceSource>, UnsupportedOperationException> {
+//         let rot = self.delegate.rotateCounterClockwise()?;
+//         return Ok(Box::new(InvertedLuminanceSource::new_with_delegate(rot)));
+//     }
+
+//     fn rotateCounterClockwise45(
+//         &self,
+//     ) -> Result<Box<dyn LuminanceSource>, UnsupportedOperationException> {
+//         let rot_45 = self.delegate.rotateCounterClockwise45()?;
+//         return Ok(Box::new(InvertedLuminanceSource::new_with_delegate(rot_45)));
+//     }
+// }
+
+/*
+ * Copyright 2009 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//package com.google.zxing;
+
+use crate::{Exceptions, LuminanceSource};
+
+const THUMBNAIL_SCALE_FACTOR: usize = 2;
+
+/**
+ * This object extends LuminanceSource around an array of YUV data returned from the camera driver,
+ * with the option to crop to a rectangle within the full data. This can be used to exclude
+ * superfluous pixels around the perimeter and speed up decoding.
+ *
+ * It works for any pixel format where the Y channel is planar and appears first, including
+ * YCbCr_420_SP and YCbCr_422_SP.
+ *
+ * @author dswitkin@google.com (Daniel Switkin)
+ */
+#[derive(Debug, Clone)]
+pub struct PlanarYUVLuminanceSource {
+    yuv_data: Vec<u8>,
+    data_width: usize,
+    data_height: usize,
+    left: usize,
+    top: usize,
+    width: usize,
+    height: usize,
+    invert: bool,
+}
+
+impl PlanarYUVLuminanceSource {
+    pub fn new_with_all(
+        yuv_data: Vec<u8>,
+        data_width: usize,
+        data_height: usize,
+        left: usize,
+        top: usize,
+        width: usize,
+        height: usize,
+        reverse_horizontal: bool,
+        inverted: bool,
+    ) -> Result<Self, Exceptions> {
+        if left + width > data_width || top + height > data_height {
+            return Err(Exceptions::IllegalArgumentException(
+                "Crop rectangle does not fit within image data.".to_owned(),
+            ));
+        }
+
+        let mut new_s: Self = Self {
+            yuv_data,
+            data_width,
+            data_height,
+            left,
+            top,
+            width,
+            height,
+            invert: inverted,
+        };
+
+        if reverse_horizontal {
+            new_s.reverseHorizontal(width, height);
+        }
+
+        Ok(new_s)
+    }
+
+    pub fn renderThumbnail(&self) -> Vec<u8> {
+        let width = self.getWidth() / THUMBNAIL_SCALE_FACTOR;
+        let height = self.getHeight() / THUMBNAIL_SCALE_FACTOR;
+        let mut pixels = vec![0; width * height];
+        let yuv = &self.yuv_data;
+        let mut input_offset = self.top * self.data_width + self.left;
+
+        for y in 0..height {
+            //for (int y = 0; y < height; y++) {
+            let output_offset = y * width;
+            for x in 0..width {
+                //for (int x = 0; x < width; x++) {
+                let grey = yuv[input_offset + x * THUMBNAIL_SCALE_FACTOR] & 0xff;
+                pixels[output_offset + x] = (0xFF000000 | (grey as u32 * 0x00010101)) as u8;
+            }
+            input_offset += self.data_width * THUMBNAIL_SCALE_FACTOR;
+        }
+        return pixels;
+    }
+
+    /**
+     * @return width of image from {@link #renderThumbnail()}
+     */
+    pub fn getThumbnailWidth(&self) -> usize {
+        return self.getWidth() / THUMBNAIL_SCALE_FACTOR;
+    }
+
+    /**
+     * @return height of image from {@link #renderThumbnail()}
+     */
+    pub fn getThumbnailHeight(&self) -> usize {
+        return self.getHeight() / THUMBNAIL_SCALE_FACTOR;
+    }
+
+    fn reverseHorizontal(&mut self, width: usize, height: usize) {
+        //let mut yuvData = self.yuvData;
+        let mut rowStart = self.top * self.data_width + self.left;
+        for _y in 0..height {
+            let middle = rowStart + width / 2;
+            let mut x2 = rowStart + width - 1;
+            for x1 in rowStart..middle {
+                //for (int x1 = rowStart, x2 = rowStart + width - 1; x1 < middle; x1++, x2--) {
+                let temp = self.yuv_data[x1];
+                self.yuv_data[x1] = self.yuv_data[x2];
+                self.yuv_data[x2] = temp;
+                x2 -= 1;
+            }
+            rowStart += self.data_width;
+        }
+        //self.yuvData = yuvData;
+        /*for (int y = 0, rowStart = top * dataWidth + left; y < height; y++, rowStart += dataWidth) {
+          let middle = rowStart + width / 2;
+          for (int x1 = rowStart, x2 = rowStart + width - 1; x1 < middle; x1++, x2--) {
+            let temp = yuvData[x1];
+            yuvData[x1] = yuvData[x2];
+            yuvData[x2] = temp;
+          }
+        }*/
+    }
+}
+
+impl LuminanceSource for PlanarYUVLuminanceSource {
+    fn getRow(&self, y: usize, row: &Vec<u8>) -> Vec<u8> {
+        if y >= self.getHeight() {
+            //throw new IllegalArgumentException("Requested row is outside the image: " + y);
+            panic!("Requested row is outside the image: {}", y);
+        }
+        let width = self.getWidth();
+
+        let offset = (y + self.top) * self.data_width + self.left;
+
+        let mut row = if row.len() >= width {
+            row.to_vec()
+        } else {
+            vec![0; width]
+        };
+
+        row[..width].clone_from_slice(&self.yuv_data[offset..width + offset]);
+        //System.arraycopy(yuvData, offset, row, 0, width);
+        if self.invert {
+            row = self.invert_block_of_bytes(row);
+        }
+        return row;
+    }
+
+    fn getMatrix(&self) -> Vec<u8> {
+        let width = self.getWidth();
+        let height = self.getHeight();
+
+        // If the caller asks for the entire underlying image, save the copy and give them the
+        // original data. The docs specifically warn that result.length must be ignored.
+        if width == self.data_width && height == self.data_height {
+            let mut v = self.yuv_data.clone();
+            if self.invert {
+                v = self.invert_block_of_bytes(v);
+            }
+            return v;
+        }
+
+        let area = width * height;
+        let mut matrix = vec![0; area];
+        let mut inputOffset = self.top * self.data_width + self.left;
+
+        // If the width matches the full width of the underlying data, perform a single copy.
+        if width == self.data_width {
+            matrix[0..area].clone_from_slice(&self.yuv_data[inputOffset..area]);
+            //System.arraycopy(yuvData, inputOffset, matrix, 0, area);
+            if self.invert {
+                matrix = self.invert_block_of_bytes(matrix);
+            }
+            return matrix;
+        }
+
+        // Otherwise copy one cropped row at a time.
+        for y in 0..height {
+            //for (int y = 0; y < height; y++) {
+            let outputOffset = y * width;
+            matrix[outputOffset..outputOffset + width]
+                .clone_from_slice(&self.yuv_data[inputOffset..inputOffset + width]);
+            //System.arraycopy(yuvData, inputOffset, matrix, outputOffset, width);
+            inputOffset += self.data_width;
+        }
+
+        if self.invert {
+            matrix = self.invert_block_of_bytes(matrix);
+        }
+
+        return matrix;
+    }
+
+    fn getWidth(&self) -> usize {
+        self.width
+    }
+
+    fn getHeight(&self) -> usize {
+        self.height
+    }
+
+    fn isCropSupported(&self) -> bool {
+        return true;
+    }
+
+    fn crop(
+        &self,
+        left: usize,
+        top: usize,
+        width: usize,
+        height: usize,
+    ) -> Result<Box<dyn LuminanceSource>, Exceptions> {
+        match PlanarYUVLuminanceSource::new_with_all(
+            self.yuv_data.clone(),
+            self.data_width,
+            self.data_height,
+            self.left + left,
+            self.top + top,
+            width,
+            height,
+            false,
+            self.invert,
+        ) {
+            Ok(new) => Ok(Box::new(new)),
+            Err(_err) => Err(Exceptions::UnsupportedOperationException("".to_owned())),
+        }
+    }
+
+    fn isRotateSupported(&self) -> bool {
+        return false;
+    }
+
+    fn invert(&mut self) {
+        self.invert = !self.invert;
+    }
+}