ccextractor/windows/libs/include/bbuffer.h
2016-12-23 18:01:12 +03:00

61 lines
2.7 KiB
C

/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
#ifndef LEPTONICA_BBUFFER_H
#define LEPTONICA_BBUFFER_H
/*!
* \file bbuffer.h
*
* <pre>
* Expandable byte buffer for reading data in from memory and
* writing data out to other memory.
*
* This implements a queue of bytes, so data read in is put
* on the "back" of the queue (i.e., the end of the byte array)
* and data written out is taken from the "front" of the queue
* (i.e., from an index marker "nwritten" that is initially set at
* the beginning of the array.) As usual with expandable
* arrays, we keep the size of the allocated array and the
* number of bytes that have been read into the array.
*
* For implementation details, see bbuffer.c.
* </pre>
*/
/*! Expandable byte buffer for memory read/write operations */
struct L_ByteBuffer
{
l_int32 nalloc; /*!< size of allocated byte array */
l_int32 n; /*!< number of bytes read into to the array */
l_int32 nwritten; /*!< number of bytes written from the array */
l_uint8 *array; /*!< byte array */
};
typedef struct L_ByteBuffer L_BBUFFER;
#endif /* LEPTONICA_BBUFFER_H */