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tests: switch equalizer demo to play from uri
Switch the equalizer-nbands demo to use uridecodebin, so users can listen to something more pleasant than white noise. If anybody misses the white noise a uri handler to audiotestsrc can be used.
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parent
3dc3493c5a
commit
1a8f2031b3
1 changed files with 30 additions and 9 deletions
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@ -119,6 +119,15 @@ draw_spectrum (gfloat * data)
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gdk_window_end_paint (gtk_widget_get_window (drawingarea));
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}
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static void
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dynamic_link (GstPadTemplate * templ, GstPad * newpad, gpointer user_data)
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{
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GstPad *target = GST_PAD (user_data);
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gst_pad_link (newpad, target);
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gst_object_unref (target);
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}
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/* receive spectral data from element message */
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static gboolean
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message_handler (GstBus * bus, GstMessage * message, gpointer data)
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@ -149,22 +158,29 @@ int
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main (int argc, char *argv[])
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{
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GstElement *bin;
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GstElement *src, *capsfilter, *equalizer, *spectrum, *audioconvert, *sink;
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GstElement *decodebin, *decconvert;
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GstElement *capsfilter, *equalizer, *spectrum, *sinkconvert, *sink;
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GstCaps *caps;
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GstBus *bus;
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GtkWidget *appwindow, *vbox, *hbox, *scale;
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int i;
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if (argc < 2) {
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g_print ("Usage: %s <uri to play>\n", argv[0]);
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exit (-1);
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}
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gst_init (&argc, &argv);
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gtk_init (&argc, &argv);
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bin = gst_pipeline_new ("bin");
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/* White noise */
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src = gst_element_factory_make ("audiotestsrc", "src");
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g_object_set (G_OBJECT (src), "wave", 5, "volume", 0.8, NULL);
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/* Uri decoding */
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decodebin = gst_element_factory_make ("uridecodebin", "decoder");
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g_object_set (G_OBJECT (decodebin), "uri", argv[1], NULL);
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/* Force float32 samples */
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decconvert = gst_element_factory_make ("audioconvert", "decconvert");
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capsfilter = gst_element_factory_make ("capsfilter", "capsfilter");
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caps =
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gst_caps_new_simple ("audio/x-raw", "format", G_TYPE_STRING, "F32LE",
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@ -178,18 +194,23 @@ main (int argc, char *argv[])
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g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80,
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"post-messages", TRUE, "interval", 500 * GST_MSECOND, NULL);
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audioconvert = gst_element_factory_make ("audioconvert", "audioconvert");
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sinkconvert = gst_element_factory_make ("audioconvert", "sinkconvert");
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sink = gst_element_factory_make ("autoaudiosink", "sink");
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gst_bin_add_many (GST_BIN (bin), src, capsfilter, equalizer, spectrum,
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audioconvert, sink, NULL);
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if (!gst_element_link_many (src, capsfilter, equalizer, spectrum,
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audioconvert, sink, NULL)) {
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gst_bin_add_many (GST_BIN (bin), decodebin, decconvert, capsfilter, equalizer,
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spectrum, sinkconvert, sink, NULL);
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if (!gst_element_link_many (decconvert, capsfilter, equalizer, spectrum,
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sinkconvert, sink, NULL)) {
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fprintf (stderr, "can't link elements\n");
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exit (1);
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}
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/* Handle dynamic pads */
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g_signal_connect (G_OBJECT (decodebin), "pad-added",
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G_CALLBACK (dynamic_link), gst_element_get_static_pad (decconvert,
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"sink"));
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bus = gst_element_get_bus (bin);
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gst_bus_add_watch (bus, message_handler, NULL);
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gst_object_unref (bus);
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