WIP on plugin registration.

[libsigrokflow.git] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index d6bfe50e71196f7a482184f8d3e80f19a9d4f6e6..c611157a46cfbbb97fa4943ca29b1761cd70dc88 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -30,22 +30,55 @@ using namespace std::placeholders;
 
 void init()
 {
+       Gst::Plugin::register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR,
+                       "sigrok_legacy_capture_device",
+                       "Wrapper for capture devices using legacy libsigrok APIs",
+                       sigc::ptr_fun(&LegacyCaptureDevice::register_element),
+                       "0.01", "GPLv3+", "sigrok", "libsigrokflow", "http://sigrok.org");
 }
 
-auto src_template = Gst::PadTemplate::create("src",
-               Gst::PAD_SRC,
-               Gst::PAD_ALWAYS,
-               Gst::Caps::create_any());
+void LegacyCaptureDevice::class_init(Gst::ElementClass<LegacyCaptureDevice> *klass)
+{
+       klass->set_metadata("sigrok legacy capture device",
+                       "Source", "Wrapper for capture devices using legacy libsigrok APIs",
+                       "Martin Ling");
+
+       klass->add_pad_template(Gst::PadTemplate::create(
+                       "src",
+                       Gst::PAD_SRC,
+                       Gst::PAD_ALWAYS,
+                       Gst::Caps::create_any()));
+}
+
+bool LegacyCaptureDevice::register_element(Glib::RefPtr<Gst::Plugin> plugin)
+{
+       Gst::ElementFactory::register_element(plugin, "sigrok_legacy_capture_device",
+                       0, Gst::register_mm_type<LegacyCaptureDevice>(
+                               "sigrok_legacy_capture_device"));
+       return true;
+}
+
+LegacyCaptureDevice::LegacyCaptureDevice(GstElement *gobj) :
+       Glib::ObjectBase(typeid(LegacyCaptureDevice)),
+       CaptureDevice(gobj)
+{
+       add_pad(_src_pad = Gst::Pad::create(get_pad_template("src"), "src"));
+}
 
-LegacyCaptureDevice::LegacyCaptureDevice(shared_ptr<sigrok::HardwareDevice> device) :
-       _device(device), _src_pad(Gst::Pad::create(src_template))
+Glib::RefPtr<LegacyCaptureDevice>LegacyCaptureDevice::create(
+       shared_ptr<sigrok::HardwareDevice> libsigrok_device)
 {
-       add_pad(_src_pad);
+       auto element = Gst::ElementFactory::create_element("sigrok_legacy_capture_device");
+       if (!element)
+               throw runtime_error("Failed to create element - plugin not registered?");
+       auto device = Glib::RefPtr<LegacyCaptureDevice>::cast_static(element);
+       device->_libsigrok_device = libsigrok_device;
+       return device;
 }
 
 shared_ptr<sigrok::HardwareDevice> LegacyCaptureDevice::libsigrok_device()
 {
-       return _device;
+       return _libsigrok_device;
 }
 
 Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange transition)
@@ -55,8 +88,8 @@ Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange
                case Gst::STATE_CHANGE_READY_TO_PAUSED:
                        return Gst::StateChangeReturn::STATE_CHANGE_NO_PREROLL;
                case Gst::STATE_CHANGE_PAUSED_TO_PLAYING:
-                       _device->open();
-                       _device->config_set(sigrok::ConfigKey::LIMIT_SAMPLES,
+                       _libsigrok_device->open();
+                       _libsigrok_device->config_set(sigrok::ConfigKey::LIMIT_SAMPLES,
                                        Glib::Variant<int>::create(10));
                        _task = Gst::Task::create(std::bind(&LegacyCaptureDevice::_run, this));
                        _task->set_lock(_mutex);
@@ -99,8 +132,8 @@ void LegacyCaptureDevice::_datafeed_callback(
 
 void LegacyCaptureDevice::_run()
 {
-       _session = _device->driver()->parent()->create_session();
-       _session->add_device(_device);
+       _session = _libsigrok_device->driver()->parent()->create_session();
+       _session->add_device(_libsigrok_device);
        _session->add_datafeed_callback(bind(&LegacyCaptureDevice::_datafeed_callback, this, _1, _2));
        _session->start();
        _session->run();