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https://github.com/zhigang1992/shadowsocks-iOS.git
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35 lines
1.1 KiB
Objective-C
35 lines
1.1 KiB
Objective-C
/*
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* Copyright 2012 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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/**
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* This provides an easy abstraction to read bits at a time from a sequence of bytes, where the
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* number of bits read is not often a multiple of 8.
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*
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* This class is thread-safe but not reentrant -- unless the caller modifies the bytes array
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* it passed in, in which case all bets are off.
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*/
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@interface ZXBitSource : NSObject
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@property (nonatomic, assign, readonly) int bitOffset;
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@property (nonatomic, assign, readonly) int byteOffset;
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- (id)initWithBytes:(int8_t *)bytes length:(unsigned int)length;
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- (int)readBits:(int)numBits;
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- (int)available;
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@end
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