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audio-track: Respect track restrictions in our gaps

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Avoiding not negotiated errors in specific cases.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/225>
This commit is contained in:
Thibault Saunier 2021-01-12 15:50:27 -03:00
parent d1aa359c2b
commit 8e9e95b90a
1 changed files with 57 additions and 4 deletions
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61
ges/ges-audio-track.c
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@ -69,15 +69,68 @@ G_DEFINE_TYPE_WITH_PRIVATE (GESAudioTrack, ges_audio_track, GES_TYPE_TRACK);
/****************************************************
* Private methods and utils *
****************************************************/
static void
_sync_capsfilter_with_track (GESTrack * track, GstElement * capsfilter)
{
GstCaps *restriction, *caps;
gint rate;
GstStructure *structure;
g_object_get (track, "restriction-caps", &restriction, NULL);
if (restriction == NULL)
return;
if (gst_caps_get_size (restriction) == 0)
goto done;
structure = gst_caps_get_structure (restriction, 0);
if (!gst_structure_get_int (structure, "rate", &rate))
goto done;
caps = gst_caps_new_simple ("audio/x-raw", "rate", G_TYPE_INT, rate, NULL);
g_object_set (capsfilter, "caps", caps, NULL);
gst_caps_unref (caps);
done:
gst_caps_unref (restriction);
}
static void
_track_restriction_changed_cb (GESTrack * track, GParamSpec * arg G_GNUC_UNUSED,
GstElement * capsfilter)
{
_sync_capsfilter_with_track (track, capsfilter);
}
static void
_weak_notify_cb (GESTrack * track, GstElement * capsfilter)
{
g_signal_handlers_disconnect_by_func (track,
(GCallback) _track_restriction_changed_cb, capsfilter);
}
static GstElement *
create_element_for_raw_audio_gap (GESTrack * track)
{
GstElement *elem;
GstElement *bin;
GstElement *capsfilter;
elem = gst_element_factory_make ("audiotestsrc", NULL);
g_object_set (elem, "wave", 4, NULL);
bin = gst_parse_bin_from_description
("audiotestsrc wave=silence name=src ! audioconvert ! audioresample ! audioconvert ! capsfilter name=gapfilter caps=audio/x-raw",
TRUE, NULL);
return elem;
capsfilter = gst_bin_get_by_name (GST_BIN (bin), "gapfilter");
g_object_weak_ref (G_OBJECT (capsfilter), (GWeakNotify) _weak_notify_cb,
track);
g_signal_connect (track, "notify::restriction-caps",
(GCallback) _track_restriction_changed_cb, capsfilter);
_sync_capsfilter_with_track (track, capsfilter);
gst_object_unref (capsfilter);
return bin;
}