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audioaggregator: always use downstream's rate requirements

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We were previously only fixating the rate in the getcaps
implementation when downstream was requiring a discrete value,
causing negotiation to fail when upstream was capable of rate
conversion, but not made aware that it had to occur.

Instead of fixating the rate, we can simply update our sink
template caps with whatever GValue the downstream caps are holding
as their rate field.

Allows negotiation to successfully complete with pipelines such as:

audiotestsrc ! audio/x-raw, rate=48000 ! audioresample ! audiomixer name=m ! \
audio/x-raw, rate={800, 1000} ! autoaudiosink \
audiotestsrc ! audio/x-raw, rate=44100 ! audioresample ! m.
This commit is contained in:
Mathieu Duponchelle 2019-07-15 16:08:34 +02:00 committed by Sebastian Dröge
parent 4d5d7bf1c0
commit bced52d2e8
1 changed files with 2 additions and 3 deletions
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5
gst-libs/gst/audio/gstaudioaggregator.c
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@ -719,7 +719,6 @@ gst_audio_aggregator_sink_getcaps (GstPad * pad, GstAggregator * agg,
GstCaps *downstream_caps = gst_pad_get_allowed_caps (agg->srcpad);
GstCaps *sink_caps;
GstStructure *s, *s2;
gint downstream_rate;
sink_template_caps = gst_caps_make_writable (sink_template_caps);
s = gst_caps_get_structure (sink_template_caps, 0);
@ -741,8 +740,8 @@ gst_audio_aggregator_sink_getcaps (GstPad * pad, GstAggregator * agg,
else
s2 = NULL;
if (s2 && gst_structure_get_int (s2, "rate", &downstream_rate)) {
gst_structure_fixate_field_nearest_int (s, "rate", downstream_rate);
if (s2 && gst_structure_has_field (s2, "rate")) {
gst_structure_set_value (s, "rate", gst_structure_get_value (s2, "rate"));
} else if (first_configured_pad) {
gst_structure_fixate_field_nearest_int (s, "rate",
first_configured_pad->info.rate);