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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/intern/AUD_SequencerReader.cpp
* \ingroup audaspaceintern
*/
#include "AUD_SequencerReader.h"
typedef std::list<AUD_Reference<AUD_SequencerHandle> >::iterator AUD_HandleIterator;
typedef std::list<AUD_Reference<AUD_SequencerEntry> >::iterator AUD_EntryIterator;
AUD_SequencerReader::AUD_SequencerReader(AUD_Reference<AUD_SequencerFactory> factory, bool quality) :
m_position(0), m_device(factory->m_specs), m_factory(factory), m_status(0), m_entry_status(0)
{
m_device.setQuality(quality);
}
AUD_SequencerReader::~AUD_SequencerReader()
{
}
bool AUD_SequencerReader::isSeekable() const
{
return true;
}
void AUD_SequencerReader::seek(int position)
{
m_position = position;
for(AUD_HandleIterator it = m_handles.begin(); it != m_handles.end(); it++)
{
(*it)->seek(position / m_factory->m_specs.rate);
}
}
int AUD_SequencerReader::getLength() const
{
return -1;
}
int AUD_SequencerReader::getPosition() const
{
return m_position;
}
AUD_Specs AUD_SequencerReader::getSpecs() const
{
return m_factory->m_specs;
}
void AUD_SequencerReader::read(int& length, bool& eos, sample_t* buffer)
{
m_factory->lock();
if(m_factory->m_status != m_status)
{
m_device.changeSpecs(m_factory->m_specs);
m_device.setSpeedOfSound(m_factory->m_speed_of_sound);
m_device.setDistanceModel(m_factory->m_distance_model);
m_device.setDopplerFactor(m_factory->m_doppler_factor);
m_status = m_factory->m_status;
}
if(m_factory->m_entry_status != m_entry_status)
{
std::list<AUD_Reference<AUD_SequencerHandle> > handles;
AUD_HandleIterator hit = m_handles.begin();
AUD_EntryIterator eit = m_factory->m_entries.begin();
int result;
AUD_Reference<AUD_SequencerHandle> handle;
while(hit != m_handles.end() && eit != m_factory->m_entries.end())
{
handle = *hit;
AUD_Reference<AUD_SequencerEntry> entry = *eit;
result = handle->compare(entry);
if(result < 0)
{
try
{
handle = new AUD_SequencerHandle(entry, m_device);
handles.push_front(handle);
}
catch(AUD_Exception&)
{
}
eit++;
}
else if(result == 0)
{
handles.push_back(handle);
hit++;
eit++;
}
else
{
handle->stop();
hit++;
}
}
while(hit != m_handles.end())
{
(*hit)->stop();
hit++;
}
while(eit != m_factory->m_entries.end())
{
try
{
handle = new AUD_SequencerHandle(*eit, m_device);
handles.push_front(handle);
}
catch(AUD_Exception&)
{
}
eit++;
}
m_handles = handles;
m_entry_status = m_factory->m_entry_status;
}
AUD_Specs specs = m_factory->m_specs;
int pos = 0;
float time = float(m_position) / float(specs.rate);
float volume, frame;
int len, cfra;
AUD_Vector3 v, v2;
AUD_Quaternion q;
while(pos < length)
{
frame = time * m_factory->m_fps;
cfra = int(floor(frame));
len = int(ceil((cfra + 1) / m_factory->m_fps * specs.rate)) - m_position;
len = AUD_MIN(length - pos, len);
len = AUD_MAX(len, 1);
for(AUD_HandleIterator it = m_handles.begin(); it != m_handles.end(); it++)
{
(*it)->update(time, frame, m_factory->m_fps);
}
m_factory->m_volume.read(frame, &volume);
m_device.setVolume(volume);
m_factory->m_orientation.read(frame, q.get());
m_device.setListenerOrientation(q);
m_factory->m_location.read(frame, v.get());
m_device.setListenerLocation(v);
m_factory->m_location.read(frame + 1, v2.get());
v2 -= v;
m_device.setListenerVelocity(v2 * m_factory->m_fps);
m_device.read(reinterpret_cast<data_t*>(buffer + specs.channels * pos), len);
pos += len;
time += float(len) / float(specs.rate);
}
m_factory->unlock();
m_position += length;
eos = false;
}
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