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sip: media-pipeline: Allow overriding audio elements from environment

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This is useful for tests where "pulsesrc" and "pulsesink" GstElements may not
be available (for example in CI).

Additionally only set the echo cancellation and buffer properties for the
pulse GstElements.
This commit is contained in:
Evangelos Ribeiro Tzaras 2021-04-17 11:24:23 +02:00
parent b5de8f3b8a
commit 2ee6b23475
1 changed files with 33 additions and 21 deletions
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54
plugins/sip/calls-sip-media-pipeline.c
View file

@ -364,10 +364,40 @@ initable_init (GInitable *initable,
g_autofree char *caps_string = NULL;
GstPad *srcpad, *sinkpad;
GstStructure *props = NULL;
const char *env_var;
env_var = g_getenv ("CALLS_AUDIOSINK");
if (env_var) {
self->audiosink = gst_element_factory_make (env_var, "sink");
} else {
/* could also use autoaudiosink instead of pulsesink */
self->audiosink = gst_element_factory_make ("pulsesink", "sink");
/* enable echo cancellation and set buffer size to 40ms */
props = gst_structure_new ("props",
"media.role", G_TYPE_STRING, "phone",
"filter.want", G_TYPE_STRING, "echo-cancel",
NULL);
g_object_set (self->audiosink,
"buffer-time", (gint64) 40000,
"stream-properties", props,
NULL);
g_object_set (self->audiosrc,
"buffer-time", (gint64) 40000,
"stream-properties", props,
NULL);
gst_structure_free (props);
}
env_var = g_getenv ("CALLS_AUDIOSRC");
if (env_var)
self->audiosrc = gst_element_factory_make (env_var, "source");
else
self->audiosrc = gst_element_factory_make ("pulsesrc", "source");
/* could also use autoaudiosink instead of pulsesink */
self->audiosink = gst_element_factory_make ("pulsesink", "sink");
self->audiosrc = gst_element_factory_make ("pulsesrc", "source");
if (!self->audiosrc || !self->audiosink) {
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not create audiosink or audiosrc");
@ -461,24 +491,6 @@ initable_init (GInitable *initable,
return FALSE;
}
/* enable echo cancellation and set buffer size to 40ms */
props = gst_structure_new ("props",
"media.role", G_TYPE_STRING, "phone",
"filter.want", G_TYPE_STRING, "echo-cancel",
NULL);
g_object_set (self->audiosink,
"buffer-time", (gint64) 40000,
"stream-properties", props,
NULL);
g_object_set (self->audiosrc,
"buffer-time", (gint64) 40000,
"stream-properties", props,
NULL);
gst_structure_free (props);
gst_bin_add (GST_BIN (self->send_pipeline), self->send_rtpbin);
gst_bin_add (GST_BIN (self->recv_pipeline), self->recv_rtpbin);