forked from bartvdbraak/blender
7296600434
Some points of the refactor not sorted by importance: * Fixed immutability of readers and factories (there are exceptions...) * Fixed copy constructors and = operators * Removed messaging system * Removed reader types * Added const where possible * Using initalisers when possible * Avoided use of pointers when possible * Removed AUD_NEW and AUD_DELETE macros * Removed useless NULL pointer checks * Fixed exception catching * Fixed some yet unknown bugs * Lots of other stuff
92 lines
2.1 KiB
C++
92 lines
2.1 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_LimiterReader.h"
|
|
#include "AUD_Buffer.h"
|
|
|
|
#include <iostream>
|
|
|
|
AUD_LimiterReader::AUD_LimiterReader(AUD_IReader* reader,
|
|
float start, float end) :
|
|
AUD_EffectReader(reader),
|
|
m_start(int(start * reader->getSpecs().rate)),
|
|
m_end(int(end * reader->getSpecs().rate))
|
|
{
|
|
if(m_start > 0)
|
|
{
|
|
if(m_reader->isSeekable())
|
|
m_reader->seek(m_start);
|
|
else
|
|
{
|
|
// skip first m_start samples by reading them
|
|
int length = AUD_DEFAULT_BUFFER_SIZE;
|
|
sample_t* buffer;
|
|
for(int len = m_start;
|
|
length == AUD_DEFAULT_BUFFER_SIZE;
|
|
len -= AUD_DEFAULT_BUFFER_SIZE)
|
|
{
|
|
if(len < AUD_DEFAULT_BUFFER_SIZE)
|
|
length = len;
|
|
m_reader->read(length, buffer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void AUD_LimiterReader::seek(int position)
|
|
{
|
|
m_reader->seek(position + m_start);
|
|
}
|
|
|
|
int AUD_LimiterReader::getLength() const
|
|
{
|
|
int len = m_reader->getLength();
|
|
if(len < 0 || (len > m_end && m_end >= 0))
|
|
len = m_end;
|
|
return len - m_start;
|
|
}
|
|
|
|
int AUD_LimiterReader::getPosition() const
|
|
{
|
|
int pos = m_reader->getPosition();
|
|
return AUD_MIN(pos, m_end) - m_start;
|
|
}
|
|
|
|
void AUD_LimiterReader::read(int & length, sample_t* & buffer)
|
|
{
|
|
if(m_end >= 0)
|
|
{
|
|
int position = m_reader->getPosition();
|
|
if(position + length > m_end)
|
|
length = m_end - position;
|
|
if(length < 0)
|
|
{
|
|
length = 0;
|
|
return;
|
|
}
|
|
}
|
|
m_reader->read(length, buffer);
|
|
}
|