blender/intern/audaspace/FX/AUD_SquareReader.cpp

64 lines
1.6 KiB
C++

/*
* $Id$
*
* ***** BEGIN LGPL LICENSE BLOCK *****
*
* Copyright 2009 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* AudaSpace is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* AudaSpace is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
*
* ***** END LGPL LICENSE BLOCK *****
*/
#include "AUD_SquareReader.h"
#include "AUD_Buffer.h"
#include <cstring>
AUD_SquareReader::AUD_SquareReader(AUD_IReader* reader, float threshold) :
AUD_EffectReader(reader),
m_threshold(threshold)
{
m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
}
AUD_SquareReader::~AUD_SquareReader()
{
delete m_buffer; AUD_DELETE("buffer")
}
void AUD_SquareReader::read(int & length, sample_t* & buffer)
{
sample_t* buf;
AUD_Specs specs = m_reader->getSpecs();
m_reader->read(length, buf);
if(m_buffer->getSize() < length * AUD_SAMPLE_SIZE(specs))
m_buffer->resize(length * AUD_SAMPLE_SIZE(specs));
buffer = m_buffer->getBuffer();
for(int i = 0; i < length * specs.channels; i++)
{
if(buf[i] >= m_threshold)
buffer[i] = 1.0f;
else if(buf[i] <= -m_threshold)
buffer[i] = -1.0f;
else
buffer[i] = 0.0f;
}
}