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