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/*
Copyright (C) 2002 Hans Meine
hans_meine@gmx.net
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "flowsystem.h"
#include "soundserver.h"
#include "artsflow.h"
#include "stdsynthmodule.h"
#include "debug.h"
#include <math.h>
using namespace std;
using namespace Arts;
class GSLPlayObject_impl : public GSLPlayObject_skel, public StdSynthModule {
protected:
DataHandlePlay leftPlay_, rightPlay_;
poState state_;
WaveDataHandle dhandle_;
std::string filename_;
int sampleCount()
{
if(!dhandle_.isLoaded()) return 0;
return dhandle_.valueCount() / dhandle_.channelCount();
}
public:
/*
* construction, destruction
*/
GSLPlayObject_impl()
: leftPlay_(DataHandlePlay::null()),
rightPlay_(DataHandlePlay::null()),
state_(posIdle)
{
}
float speed() { return leftPlay_.speed(); }
void speed(float newSpeed)
{
if(newSpeed != speed())
{
leftPlay_.speed(newSpeed);
if(!rightPlay_.isNull())
rightPlay_.speed(newSpeed);
speed_changed(newSpeed);
}
}
void streamStart()
{
arts_return_if_fail(dhandle_.isLoaded());
if(dhandle_.channelCount()>=2)
{
rightPlay_ = leftPlay_.clone();
rightPlay_.channelIndex(1);
}
leftPlay_.start();
if(!rightPlay_.isNull())
rightPlay_.start();
arts_debug("GSLPlayObject: streamStart(%d channels) playing %d, %d",
dhandle_.channelCount(),
leftPlay_.channelIndex(),
rightPlay_.isNull() ? -1 : rightPlay_.channelIndex());
_node()->virtualize("left", leftPlay_._node(), "outvalue");
if(dhandle_.channelCount()>=2)
_node()->virtualize("right", rightPlay_._node(), "outvalue");
else
_node()->virtualize("right", leftPlay_._node(), "outvalue");
}
void streamEnd()
{
arts_return_if_fail(dhandle_.isLoaded());
_node()->devirtualize("left", leftPlay_._node(), "outvalue");
if(dhandle_.channelCount()>=2)
_node()->devirtualize("right", rightPlay_._node(), "outvalue");
else
_node()->devirtualize("right", leftPlay_._node(), "outvalue");
leftPlay_.stop();
if(!rightPlay_.isNull())
rightPlay_.stop();
}
/*
* KMedia2 private interface
*/
bool loadMedia(const std::string &filename)
{
arts_return_val_if_fail(!dhandle_.isLoaded(), false);
arts_debug("GSLPlayObject: loadMedia('%s')", filename.c_str());
filename_ = filename;
dhandle_.load(filename);
if(dhandle_.isLoaded())
{
leftPlay_ = dhandle_.createPlayer();
if(dhandle_.channelCount()>2)
arts_debug("GSLPlayObject: can't play more than 2 channels, "
"playing first two!");
leftPlay_._node()->connect("finished_changed", _node(), "done");
}
return dhandle_.isLoaded();
}
/*
* KMedia2 interface
*/
std::string description()
{
return "no description available (see "__FILE__")";
}
poTime currentTime()
{
if(!dhandle_.isLoaded())
return poTime(0, 0, 0, "samples");
float timesec = leftPlay_.pos()
/ dhandle_.channelCount()
/ dhandle_.mixerFrequency();
float timems = (timesec - floor(timesec)) * 1000.0;
return poTime((long)timesec, (long)timems,
(long)leftPlay_.pos(), "samples");
}
poTime overallTime()
{
float timesec = (float)sampleCount() / dhandle_.mixerFrequency();
float timems = (timesec - floor(timesec)) * 1000.0;
return poTime((long)timesec, (long)timems,
(long)sampleCount(), "samples");
}
poCapabilities capabilities()
{
return static_cast<poCapabilities>(capPause | capSeek);
}
std::string mediaName()
{
return filename_;
}
poState state()
{
return state_;
}
bool done() { return leftPlay_.finished(); }
void done(bool d)
{
if(d && (state_ == posPlaying))
halt();
}
void play()
{
leftPlay_.paused(false);
if(!rightPlay_.isNull())
rightPlay_.paused(false);
state_ = posPlaying;
}
void halt()
{
leftPlay_.paused(true);
if(!rightPlay_.isNull())
rightPlay_.paused(true);
state_ = posIdle;
seek(poTime(-1, -1, 0, "samples"));
}
void pause()
{
leftPlay_.paused(true);
if(!rightPlay_.isNull())
rightPlay_.paused(true);
state_ = posPaused;
}
void seek(const class poTime &newTime)
{
long newsamples = -1;
if(newTime.seconds != -1 && newTime.ms != -1)
{
float flnewtime = (float)newTime.seconds+((float)newTime.ms/1000.0);
newsamples = (long)(flnewtime * dhandle_.mixerFrequency());
}
else if(newTime.custom >= 0 && newTime.customUnit == "samples")
{
newsamples = (long)newTime.custom;
}
if(newsamples > sampleCount())
newsamples = sampleCount();
if(newsamples >= 0)
{
leftPlay_.pos(newsamples * dhandle_.channelCount());
if(!rightPlay_.isNull())
rightPlay_.pos(newsamples * dhandle_.channelCount());
}
}
};
REGISTER_IMPLEMENTATION(GSLPlayObject_impl);
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