blender/intern/audaspace/FX/AUD_SuperposeReader.cpp
Joerg Mueller ce44d63ae1 Audaspace:
* Added an error string for audaspace exceptions.
* Fixed PyAPI exceptions.
* Minor bugfixes.
* Added a name parameter to the Jack device, so that one can define an own name via Python.
2010-08-03 08:07:21 +00:00

116 lines
2.7 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_SuperposeReader.h"
#include <cstring>
static const char* specs_error = "AUD_SuperposeReader: Both readers have to "
"have the same specs.";
AUD_SuperposeReader::AUD_SuperposeReader(AUD_IReader* reader1, AUD_IReader* reader2) :
m_reader1(reader1), m_reader2(reader2)
{
try
{
AUD_Specs s1, s2;
s1 = reader1->getSpecs();
s2 = reader2->getSpecs();
if(memcmp(&s1, &s2, sizeof(AUD_Specs)))
AUD_THROW(AUD_ERROR_SPECS, specs_error);
}
catch(AUD_Exception&)
{
delete reader1;
delete reader2;
throw;
}
}
AUD_SuperposeReader::~AUD_SuperposeReader()
{
delete m_reader1;
delete m_reader2;
}
bool AUD_SuperposeReader::isSeekable() const
{
return m_reader1->isSeekable() && m_reader2->isSeekable();
}
void AUD_SuperposeReader::seek(int position)
{
m_reader1->seek(position);
m_reader2->seek(position);
}
int AUD_SuperposeReader::getLength() const
{
int len1 = m_reader1->getLength();
int len2 = m_reader2->getLength();
if((len1 < 0) || (len2 < 0))
return -1;
return AUD_MIN(len1, len2);
}
int AUD_SuperposeReader::getPosition() const
{
int pos1 = m_reader1->getPosition();
int pos2 = m_reader2->getPosition();
return AUD_MAX(pos1, pos2);
}
AUD_Specs AUD_SuperposeReader::getSpecs() const
{
return m_reader1->getSpecs();
}
void AUD_SuperposeReader::read(int & length, sample_t* & buffer)
{
AUD_Specs specs = m_reader1->getSpecs();
int samplesize = AUD_SAMPLE_SIZE(specs);
if(m_buffer.getSize() < length * samplesize)
m_buffer.resize(length * samplesize);
buffer = m_buffer.getBuffer();
int len1 = length;
sample_t* buf;
m_reader1->read(len1, buf);
memcpy(buffer, buf, len1 * samplesize);
if(len1 < length)
memset(buffer + len1 * specs.channels, 0, (length - len1) * samplesize);
int len2 = length;
m_reader2->read(len2, buf);
for(int i = 0; i < len2 * specs.channels; i++)
buffer[i] += buf[i];
length = AUD_MAX(len1, len2);
}