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