mirror of
https://github.com/zxing/zxing.git
synced 2024-11-13 22:44:09 -08:00
7616c4d06d
git-svn-id: https://zxing.googlecode.com/svn/trunk@2558 59b500cc-1b3d-0410-9834-0bbf25fbcc57
105 lines
4.2 KiB
C#
Executable file
105 lines
4.2 KiB
C#
Executable file
using System.Collections;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
namespace com.google.zxing
|
|
{
|
|
|
|
using BitArray = com.google.zxing.common.BitArray;
|
|
using BitMatrix = com.google.zxing.common.BitMatrix;
|
|
|
|
/// <summary>
|
|
/// This class hierarchy provides a set of methods to convert luminance data to 1 bit data.
|
|
/// It allows the algorithm to vary polymorphically, for example allowing a very expensive
|
|
/// thresholding technique for servers and a fast one for mobile. It also permits the implementation
|
|
/// to vary, e.g. a JNI version for Android and a Java fallback version for other platforms.
|
|
///
|
|
/// @author dswitkin@google.com (Daniel Switkin)
|
|
/// </summary>
|
|
public abstract class Binarizer
|
|
{
|
|
|
|
private readonly LuminanceSource source;
|
|
|
|
protected internal Binarizer(LuminanceSource source)
|
|
{
|
|
this.source = source;
|
|
}
|
|
|
|
public LuminanceSource LuminanceSource
|
|
{
|
|
get
|
|
{
|
|
return source;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts one row of luminance data to 1 bit data. May actually do the conversion, or return
|
|
/// cached data. Callers should assume this method is expensive and call it as seldom as possible.
|
|
/// This method is intended for decoding 1D barcodes and may choose to apply sharpening.
|
|
/// For callers which only examine one row of pixels at a time, the same BitArray should be reused
|
|
/// and passed in with each call for performance. However it is legal to keep more than one row
|
|
/// at a time if needed.
|
|
/// </summary>
|
|
/// <param name="y"> The row to fetch, 0 <= y < bitmap height. </param>
|
|
/// <param name="row"> An optional preallocated array. If null or too small, it will be ignored.
|
|
/// If used, the Binarizer will call BitArray.clear(). Always use the returned object. </param>
|
|
/// <returns> The array of bits for this row (true means black). </returns>
|
|
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
|
|
//ORIGINAL LINE: public abstract com.google.zxing.common.BitArray getBlackRow(int y, com.google.zxing.common.BitArray row) throws NotFoundException;
|
|
public abstract BitArray getBlackRow(int y, BitArray row);
|
|
|
|
/// <summary>
|
|
/// Converts a 2D array of luminance data to 1 bit data. As above, assume this method is expensive
|
|
/// and do not call it repeatedly. This method is intended for decoding 2D barcodes and may or
|
|
/// may not apply sharpening. Therefore, a row from this matrix may not be identical to one
|
|
/// fetched using getBlackRow(), so don't mix and match between them.
|
|
/// </summary>
|
|
/// <returns> The 2D array of bits for the image (true means black). </returns>
|
|
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
|
|
//ORIGINAL LINE: public abstract com.google.zxing.common.BitMatrix getBlackMatrix() throws NotFoundException;
|
|
public abstract BitMatrix BlackMatrix {get;}
|
|
|
|
/// <summary>
|
|
/// Creates a new object with the same type as this Binarizer implementation, but with pristine
|
|
/// state. This is needed because Binarizer implementations may be stateful, e.g. keeping a cache
|
|
/// of 1 bit data. See Effective Java for why we can't use Java's clone() method.
|
|
/// </summary>
|
|
/// <param name="source"> The LuminanceSource this Binarizer will operate on. </param>
|
|
/// <returns> A new concrete Binarizer implementation object. </returns>
|
|
public abstract Binarizer createBinarizer(LuminanceSource source);
|
|
|
|
public int Width
|
|
{
|
|
get
|
|
{
|
|
return source.Width;
|
|
}
|
|
}
|
|
|
|
public int Height
|
|
{
|
|
get
|
|
{
|
|
return source.Height;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
} |