audiotestsrc: increase freq limit

Raise the frequency limit and try to negotiate to a samplerate of 4*freq
when larger then the default samplerate.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=754450

diff --git a/gst/audiotestsrc/gstaudiotestsrc.c b/gst/audiotestsrc/gstaudiotestsrc.c
index c5ab4c4..15cb4a3 100644 (file)
--- a/gst/audiotestsrc/gstaudiotestsrc.c
+++ b/gst/audiotestsrc/gstaudiotestsrc.c
@@ -180,8 +180,9 @@ gst_audio_test_src_class_init (GstAudioTestSrcClass * klass)
           GST_TYPE_AUDIO_TEST_SRC_WAVE, GST_AUDIO_TEST_SRC_WAVE_SINE,
           G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
   g_object_class_install_property (gobject_class, PROP_FREQ,
-      g_param_spec_double ("freq", "Frequency", "Frequency of test signal",
-          0.0, 20000.0, DEFAULT_FREQ,
+      g_param_spec_double ("freq", "Frequency", "Frequency of test signal. "
+          "The sample rate needs to be at least 4 times higher.",
+          0.0, (gdouble) G_MAXINT / 4, DEFAULT_FREQ,
           G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
   g_object_class_install_property (gobject_class, PROP_VOLUME,
       g_param_spec_double ("volume", "Volume", "Volume of test signal", 0.0,
@@ -267,7 +268,7 @@ gst_audio_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
 {
   GstAudioTestSrc *src = GST_AUDIO_TEST_SRC (bsrc);
   GstStructure *structure;
-  gint channels;
+  gint channels, rate;
 
   caps = gst_caps_make_writable (caps);
 
@@ -275,8 +276,8 @@ gst_audio_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
 
   GST_DEBUG_OBJECT (src, "fixating samplerate to %d", GST_AUDIO_DEF_RATE);
 
-  gst_structure_fixate_field_nearest_int (structure, "rate",
-      GST_AUDIO_DEF_RATE);
+  rate = MAX (GST_AUDIO_DEF_RATE, src->freq * 4);
+  gst_structure_fixate_field_nearest_int (structure, "rate", rate);
 
   gst_structure_fixate_field_string (structure, "format", DEFAULT_FORMAT_STR);