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OutputBuffer.h
1 /*
2  * This library is free software; you can redistribute it and/or
3  * modify it under the terms of the GNU Lesser General Public
4  * License as published by the Free Software Foundation; either
5  * version 2.1 of the License, or (at your option) any later version.
6  *
7  * This library is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10  * Lesser General Public License for more details.
11  *
12  * You should have received a copy of the GNU Lesser General Public
13  * License along with this library; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15  *
16  * OutputBuffer.h
17  * An Abstract base class that represents a block of memory that can be written
18  * to.
19  * Copyright (C) 2012 Simon Newton
20  */
21 
22 #ifndef INCLUDE_OLA_IO_OUTPUTBUFFER_H_
23 #define INCLUDE_OLA_IO_OUTPUTBUFFER_H_
24 
25 #include <stdint.h>
26 
27 namespace ola {
28 namespace io {
29 
37  public:
38  virtual ~OutputBufferInterface() {}
39 
40  // Returns true if this OutputBuffer is empty.
41  virtual bool Empty() const = 0;
42 
43  // Return the amount of data in the OutputBuffer
44  virtual unsigned int Size() const = 0;
45 
46  // Append some data to this OutputBuffer
47  virtual void Write(const uint8_t *data, unsigned int length) = 0;
48 };
49 } // namespace io
50 } // namespace ola
51 #endif // INCLUDE_OLA_IO_OUTPUTBUFFER_H_