Copy of aRts for Trinity modifications

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/dependencies/arts@1070145 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 147 insertions, 0 deletions

diff --git a/examples/playtofile_main.cc b/examples/playtofile_main.cc
new file mode 100644
index 0000000..c7f85fd
--- /dev/null
+++ b/examples/playtofile_main.cc
@@ -0,0 +1,147 @@
+    /*
+
+    Copyright (C) 2000 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    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;
+}