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- #import <Foundation/Foundation.h>
- @interface RingBuffer : NSObject {
- NSMutableData *buffer;
- SInt32 position;
- SInt32 tail;
- }
- @property (nonatomic, readonly) UInt32 freeSpace;
- //用MutableData初始化
- - (instancetype)initWithData:(NSMutableData*)data;
- // Returns false if there is not enough free space in buffer
- - (BOOL)appendByte:(uint8_t)byte;
- // Returns number of bytes written
- - (SInt32)appendData:(const NSData*)value offset:(SInt32)offset length:(SInt32)length;
- // Returns number of bytes written
- - (SInt32)flushToOutputStream:(NSOutputStream*)stream;
- @end
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