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tests: improve readability of equalizer demo

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Rename variable name to make it more readable, add comments for the three
scales created per block, and set the window title.
This commit is contained in:
Luis de Bethencourt 2015-04-16 11:17:38 +01:00
parent d463e3fba8
commit 3dc3493c5a
1 changed files with 26 additions and 22 deletions
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48
tests/examples/equalizer/demo.c
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@ -152,7 +152,7 @@ main (int argc, char *argv[])
GstElement *src, *capsfilter, *equalizer, *spectrum, *audioconvert, *sink; GstElement *src, *capsfilter, *equalizer, *spectrum, *audioconvert, *sink;
GstCaps *caps; GstCaps *caps;
GstBus *bus; GstBus *bus;
GtkWidget *appwindow, *vbox, *hbox, *widget; GtkWidget *appwindow, *vbox, *hbox, *scale;
int i; int i;
gst_init (&argc, &argv); gst_init (&argc, &argv);
@ -195,6 +195,7 @@ main (int argc, char *argv[])
gst_object_unref (bus); gst_object_unref (bus);
appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL); appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (appwindow), "Equalizer Demo");
g_signal_connect (G_OBJECT (appwindow), "destroy", g_signal_connect (G_OBJECT (appwindow), "destroy",
G_CALLBACK (on_window_destroy), NULL); G_CALLBACK (on_window_destroy), NULL);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
@ -227,35 +228,38 @@ main (int argc, char *argv[])
scales_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6); scales_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
widget = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL, /* Create gain scale */
scale = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL,
-24.0, 12.0, 0.5); -24.0, 12.0, 0.5);
gtk_scale_set_draw_value (GTK_SCALE (widget), TRUE); gtk_scale_set_draw_value (GTK_SCALE (scale), TRUE);
gtk_scale_set_value_pos (GTK_SCALE (widget), GTK_POS_TOP); gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_range_set_value (GTK_RANGE (widget), gain); gtk_range_set_value (GTK_RANGE (scale), gain);
gtk_widget_set_size_request (widget, 25, 150); gtk_widget_set_size_request (scale, 35, 150);
g_signal_connect (G_OBJECT (widget), "value-changed", g_signal_connect (G_OBJECT (scale), "value-changed",
G_CALLBACK (on_gain_changed), (gpointer) band); G_CALLBACK (on_gain_changed), (gpointer) band);
gtk_box_pack_start (GTK_BOX (scales_hbox), widget, FALSE, FALSE, 0); gtk_box_pack_start (GTK_BOX (scales_hbox), scale, FALSE, FALSE, 0);
widget = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL, /* Create bandwidth scale */
scale = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL,
0.0, 20000.0, 5.0); 0.0, 20000.0, 5.0);
gtk_scale_set_draw_value (GTK_SCALE (widget), TRUE); gtk_scale_set_draw_value (GTK_SCALE (scale), TRUE);
gtk_scale_set_value_pos (GTK_SCALE (widget), GTK_POS_TOP); gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_range_set_value (GTK_RANGE (widget), bw); gtk_range_set_value (GTK_RANGE (scale), bw);
gtk_widget_set_size_request (widget, 25, 150); gtk_widget_set_size_request (scale, 45, 150);
g_signal_connect (G_OBJECT (widget), "value-changed", g_signal_connect (G_OBJECT (scale), "value-changed",
G_CALLBACK (on_bandwidth_changed), (gpointer) band); G_CALLBACK (on_bandwidth_changed), (gpointer) band);
gtk_box_pack_start (GTK_BOX (scales_hbox), widget, TRUE, TRUE, 0); gtk_box_pack_start (GTK_BOX (scales_hbox), scale, TRUE, TRUE, 0);
widget = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL, /* Create frequency scale */
scale = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL,
20.0, 20000.0, 5.0); 20.0, 20000.0, 5.0);
gtk_scale_set_draw_value (GTK_SCALE (widget), TRUE); gtk_scale_set_draw_value (GTK_SCALE (scale), TRUE);
gtk_scale_set_value_pos (GTK_SCALE (widget), GTK_POS_TOP); gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_range_set_value (GTK_RANGE (widget), freq); gtk_range_set_value (GTK_RANGE (scale), freq);
gtk_widget_set_size_request (widget, 25, 150); gtk_widget_set_size_request (scale, 45, 150);
g_signal_connect (G_OBJECT (widget), "value-changed", g_signal_connect (G_OBJECT (scale), "value-changed",
G_CALLBACK (on_freq_changed), (gpointer) band); G_CALLBACK (on_freq_changed), (gpointer) band);
gtk_box_pack_start (GTK_BOX (scales_hbox), widget, TRUE, TRUE, 0); gtk_box_pack_start (GTK_BOX (scales_hbox), scale, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (frame), scales_hbox); gtk_container_add (GTK_CONTAINER (frame), scales_hbox);