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audiovisualizer: handle non-existant pool in the default allocation query

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gst_query_set_nth_allocation_pool() requires there to be a pool in the
query already. This is not always the case when we get the query from
upstream.  Use gst_query_add_allocation_pool() instead in such case.

https://bugzilla.gnome.org/show_bug.cgi?id=681719
This commit is contained in:
Matthew Waters 2013-03-14 11:15:29 +11:00 committed by Tim-Philipp Müller
parent 5d72759fec
commit bf502f5502
1 changed files with 8 additions and 2 deletions
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10
gst/audiovisualizers/gstaudiovisualizer.c
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@ -936,6 +936,7 @@ default_decide_allocation (GstAudioVisualizer * scope, GstQuery * query)
GstAllocationParams params;
GstStructure *config;
gboolean update_allocator;
gboolean update_pool;
gst_query_parse_allocation (query, &outcaps, NULL);
@ -953,10 +954,12 @@ default_decide_allocation (GstAudioVisualizer * scope, GstQuery * query)
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
update_pool = TRUE;
} else {
pool = NULL;
size = GST_VIDEO_INFO_SIZE (&scope->vinfo);
min = max = 0;
update_pool = FALSE;
}
if (pool == NULL) {
@ -978,10 +981,13 @@ default_decide_allocation (GstAudioVisualizer * scope, GstQuery * query)
if (allocator)
gst_object_unref (allocator);
if (pool) {
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
if (pool)
gst_object_unref (pool);
}
return TRUE;
}