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/*
* $Id$
*
* ***** 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_VolumeReader.h"
#include "AUD_Buffer.h"
#include <cstring>
AUD_VolumeReader::AUD_VolumeReader(AUD_IReader* reader, float volume) :
AUD_EffectReader(reader),
m_volume(volume)
{
int bigendian = 1;
bigendian = (((char*)&bigendian)[0]) ? 0: 1; // 1 if Big Endian
switch(m_reader->getSpecs().format)
{
case AUD_FORMAT_S16:
m_adjust = AUD_volume_adjust<int16_t>;
break;
case AUD_FORMAT_S32:
m_adjust = AUD_volume_adjust<int32_t>;
break;
case AUD_FORMAT_FLOAT32:
m_adjust = AUD_volume_adjust<float>;
break;
case AUD_FORMAT_FLOAT64:
m_adjust = AUD_volume_adjust<double>;
break;
case AUD_FORMAT_U8:
m_adjust = AUD_volume_adjust_u8;
break;
case AUD_FORMAT_S24:
m_adjust = bigendian ? AUD_volume_adjust_s24_be :
AUD_volume_adjust_s24_le;
break;
default:
delete m_reader;
AUD_THROW(AUD_ERROR_READER);
}
m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
}
AUD_VolumeReader::~AUD_VolumeReader()
{
delete m_buffer; AUD_DELETE("buffer")
}
bool AUD_VolumeReader::notify(AUD_Message &message)
{
if(message.type == AUD_MSG_VOLUME)
{
m_volume = message.volume;
m_reader->notify(message);
return true;
}
return m_reader->notify(message);
}
void AUD_VolumeReader::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();
m_adjust(buffer, buf, length * specs.channels, m_volume);
}
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