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/*
Copyright (C) 2000 Stefan Westerfeld
[email protected]
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 "playtofile.h"
#include "kmedia2.h"
#include "debug.h"
#include "dynamicrequest.h"
#include "connect.h"
#include "flowsystem.h"
#include <ctype.h>
#include <iostream>
using namespace Arts;
using namespace std;
/* copypasted from simplesoundserver_impl.cc */
PlayObject createPlayObject(const string& filename)
{
string objectType = "";
/*
* figure out extension (as lowercased letters)
*/
string extension = "";
bool extensionok = false;
string::const_reverse_iterator i;
for(i = filename.rbegin(); i != filename.rend() && !extensionok; i++)
{
if(*i == '.')
extensionok = true;
else
extension = (char)tolower(*i) + extension;
}
/*
* query trader for PlayObjects which support this
*/
if(extensionok)
{
arts_debug("search playobject, extension = %s",extension.c_str());
TraderQuery query;
query.supports("Interface","Arts::PlayObject");
query.supports("Extension",extension);
vector<TraderOffer> *offers = query.query();
if(!offers->empty())
objectType = offers->front().interfaceName(); // first offer
delete offers;
}
/*
* create a PlayObject and connect it
*/
if(!objectType.empty())
{
arts_debug("creating %s to play file", objectType.c_str());
PlayObject result = SubClass(objectType);
if(result.loadMedia(filename))
{
result._node()->start();
return result;
}
else arts_warning("couldn't load file %s", filename.c_str());
}
else arts_warning("file format extension %s unsupported",extension.c_str());
return PlayObject::null();
}
/*
* This is an example for dumping things to a file. It demonstates, that
*
* a) you can use all aRts objects in a non-realtime environment (i.e.
* the time in the PlayObject will pass much faster than the outside
* time when dumping things to a file)
*
* b) complayObjectnents will be dynamically loaded as needed
*
* c) you need to do small tricks to get the signal flow going when you are
* not having audio modules around
*
* d) by implementing aRts modules, you can easily grab and insert data from/to
* arbitary non-aRts sources - for instance, a wave editor might implement
* own modules to get the wave from/to memory
*/
int main(int argc, char **argv)
{
Dispatcher d;
if(argc != 2 && argc != 3)
{
cerr << "usage: playtofile <inputfile> [ <outputfile> ]" << endl;
exit(1);
}
PlayObject playObject = createPlayObject(argv[1]);
if(playObject.isNull())
{
cerr << "can't read inputfile " << argv[1] << endl;
exit(1);
}
playObject.play();
PlayToFile playToFile;
if(argc == 3) playToFile.filename(argv[2]);
connect(playObject, "left", playToFile,"left");
connect(playObject, "right", playToFile,"right");
// <ignore the following lines>
// special case when using mpeglib, do tell it not to block (internal
// interface) - we also put an usleep here to ensure that the threads
// and everything is fully initialized as soon as we start
usleep(100000);
if(playObject._base()->_isCompatibleWith("DecoderBaseObject"))
if(!DynamicRequest(playObject).method("_set_blocking").param(true).invoke())
cerr << "mpeglib, and blocking attribute can't be changed?" << endl;
// </ignore>
playToFile.start();
while(playObject.state() != posIdle)
playToFile.goOn();
return 0;
}
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