Hi, I'm new to gstreamer; I'm developing a C++ game and I need to apply a FFT to the microphone input in order to get the pitch. Previously I was using Portaudio and a separate fft library, but now that I'm trying to switch to GStreamer looks like the "spectrum" element could do the job. I've managed to set up an example that creates a small program that links a pulsesrc with a spectrum and the to pulsesink, but I don't know how to parse the messages that spectrum sends.
In the spectrum reference [1], it says that the structure has an attribute called "magnitudes", which is a "GstValueList of gfloat", but I don't know how to parse it, because Gst::Structure [2] hasn't got any appropiate get_field method. However, there's the method called get_field_type, but I don't know what to do with the GType it returns. As a side question, would it be possible to get the raw stream for me to manually parse it? Thanks [1]: http://www.gstreamer.net/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-spectrum.html [2]: http://library.gnome.org/devel/gstreamermm/unstable/classGst_1_1Structure.html -- José Tomás Tocino García _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
