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/* gstreamermm - a C++ wrapper for gstreamer
*
* Copyright 2009 The gstreamermm Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <gstreamermm.h>
#include <glibmm/main.h>
#include <glibmm/exceptionhandler.h>
#include <iostream>
Glib::RefPtr<Glib::MainLoop> mainloop;
bool have_type = false;
static bool on_structure_foreach(const Glib::QueryQuark& id, const Glib::ValueBase& value)
{
const Glib::ustring str_id = id;
gchar* str_value = g_strdup_value_contents(value.gobj());
std::cout << "Structure field: id=" << str_id << ", value=" << str_value << std::endl;
g_free(str_value);
return true;
}
static void on_typefind_have_type(guint probability, const Glib::RefPtr<Gst::Caps>& caps)
{
have_type = true;
std::cout << "have-type: probability=" << probability << std::endl;
if(!caps)
{
std::cerr << "on_typefind_have_type(): caps is null" << std::endl;
return;
}
if(!caps->size())
{
std::cerr << "on_typefind_have_type(): caps is empty" << std::endl;
return;
}
Gst::Structure structure = caps->get_structure(0);
const Glib::ustring mime_type = structure.get_name();
std::cout << "have-type: mime_type=" << mime_type << std::endl;
structure.foreach( sigc::ptr_fun(&on_structure_foreach) );
if(mainloop)
mainloop->quit();
else
std::cerr << "on_typefind_have_type(): mainloop is null" << std::endl;
}
#ifdef GSTREAMERMM_DISABLE_DEPRECATED
#include <gst/gsttypefind.h>
static void TypeFindElement_signal_have_type_callback(struct _GstTypeFindElement* self, guint p0,GstCaps* p1,void* data)
{
using SlotType = sigc::slot< void,guint,const Glib::RefPtr<Gst::Caps>& >;
auto obj = dynamic_cast<Gst::Element*>(Glib::ObjectBase::_get_current_wrapper((GObject*) self));
if(obj)
{
try
{
if(const auto slot = Glib::SignalProxyNormal::data_to_slot(data))
(*static_cast<SlotType*>(slot))(p0, Glib::wrap(p1, true));
}
catch(...)
{
Glib::exception_handlers_invoke();
}
}
}
static const Glib::SignalProxyInfo TypeFindElement_signal_have_type_info =
{
"have-type",
(GCallback) &TypeFindElement_signal_have_type_callback,
(GCallback) &TypeFindElement_signal_have_type_callback
};
#endif
int main(int argc, char** argv)
{
// Initialize Gstreamermm:
Gst::init(argc, argv);
//Check input arguments:
if(argc < 2)
{
std::cout << "Usage: " << argv[0] << " <filename>" << std::endl;
return 1;
}
const std::string filename = argv[1];
// Create pipeline:
Glib::RefPtr<Gst::Pipeline> pipeline = Gst::Pipeline::create("my-pipeline");
// Create elements:
#ifndef GSTREAMERMM_DISABLE_DEPRECATED
Glib::RefPtr<Gst::FileSrc> element_source = Gst::FileSrc::create();
element_source->property_location() = filename;
Glib::RefPtr<Gst::FakeSink> element_sink = Gst::FakeSink::create();
Glib::RefPtr<Gst::TypeFindElement> element_typefind = Gst::TypeFindElement::create();
element_typefind->signal_have_type().connect(
sigc::ptr_fun(&on_typefind_have_type) );
#else
Glib::RefPtr<Gst::Element> element_source = Gst::ElementFactory::create_element("filesrc");
element_source->set_property("location", filename);
Glib::RefPtr<Gst::Element> element_sink = Gst::ElementFactory::create_element("fakesink");
Glib::RefPtr<Gst::Element> element_typefind = Gst::ElementFactory::create_element("typefind");
Glib::SignalProxy< void,guint,const Glib::RefPtr<Gst::Caps>& > proxy(element_typefind.operator->(), &TypeFindElement_signal_have_type_info);
proxy.connect(sigc::ptr_fun(&on_typefind_have_type));
#endif
//If using an MP3 file, this should provide more Caps information from typefind.
//Glib::RefPtr<Gst::Element> element_id3demux = Gst::ElementFactory::create_element("id3demux");
//g_assert(element_id3demux);
// We must add the elements to the pipeline before linking them:
try
{
pipeline->add(element_source)->add(element_typefind)->add(element_sink);
//pipeline->add(element_source)->add(element_id3demux)->add(element_typefind)->add(element_sink);
}
catch (std::runtime_error& ex)
{
std::cerr << "Exception while adding: " << ex.what() << std::endl;
return 1;
}
// Link the elements together:
try
{
//element_source->link(element_id3demux)->link(element_typefind)->link(element_sink);
element_source->link(element_typefind)->link(element_sink);
}
catch(const std::runtime_error& error)
{
std::cerr << "Exception while linking: " << error.what() << std::endl;
return 1;
}
// Now set the whole pipeline to playing and start the main loop:
std::cout << "Setting pipeline to PLAYING." << std::endl;
mainloop = Glib::MainLoop::create();
pipeline->set_state(Gst::STATE_PLAYING);
std::cout << "Pipeline is playing." << std::endl;
if(!have_type)
mainloop->run();
// Clean up nicely:
std::cout << "Returned. Stopping pipeline." << std::endl;
pipeline->set_state(Gst::STATE_NULL);
return 0;
}
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