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import kalibrate 0.4.1

Browse source 
taken from:
http://thre.at/kalibrate/kal-v0.4.1.tar.bz2

Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf 2012-10-08 03:59:57 +02:00
commit c58471bb42
26 changed files with 2818 additions and 0 deletions
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src/circular_buffer.h Normal file
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/*
* Copyright (c) 2010, Joshua Lackey
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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 THE COPYRIGHT HOLDER OR 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.
*/
/*
* circular_buffer
*
* This class is based heavily on the GNU Radio circular buffer. While this
* class was written from scratch and contains ideas not present in the GNU
* Radio implementation, the GNU Radio circular buffers were used as a
* reference while developing this class.
*
* This is more a warning that the above BSD-style license may not be the only
* copyright that applies.
*/
#pragma once
/*
* XXX If read doesn't catch up with write before 2**64 bytes are written, this
* will break.
*/
#include <pthread.h>
class circular_buffer {
public:
circular_buffer(const unsigned int buf_len, const unsigned int item_size = 1, const unsigned int overwrite = 0);
~circular_buffer();
unsigned int read(void *buf, const unsigned int buf_len);
void *peek(unsigned int *buf_len);
unsigned int purge(const unsigned int buf_len);
void *poke(unsigned int *buf_len);
void wrote(unsigned int len);
unsigned int write(const void *buf, const unsigned int buf_len);
unsigned int data_available();
unsigned int space_available();
void flush();
void flush_nolock();
void lock();
void unlock();
unsigned int buf_len();
private:
void *m_buf;
unsigned int m_buf_len, m_buf_size, m_r, m_w, m_item_size;
unsigned long long m_read, m_written;
unsigned int m_overwrite;
void *m_base;
unsigned int m_pagesize;
pthread_mutex_t m_mutex;
};