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decodebin3: Fix collection identity check

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Collections can be auto-generated from upstream and yet have exactly the same
streams in it.

Therefore do a more in-depth check for equality.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3742

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7401>
This commit is contained in:
Edward Hervey 2024-08-21 16:29:03 +02:00 committed by GStreamer Marge Bot
parent 87c69e5174
commit ea59c921d6
1 changed files with 25 additions and 1 deletions
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26
subprojects/gst-plugins-base/gst/playback/gstdecodebin3.c
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@ -2609,6 +2609,29 @@ db_collection_new (GstStreamCollection * collection)
return db_collection;
}
static gboolean
collections_are_identical (GstStreamCollection * collection,
GstStreamCollection * previous)
{
guint i;
if (collection == previous)
return TRUE;
if (gst_stream_collection_get_size (collection) !=
gst_stream_collection_get_size (previous))
return FALSE;
for (i = 0; i < gst_stream_collection_get_size (previous); i++) {
GstStream *stream = gst_stream_collection_get_stream (previous, i);
const gchar *sid = gst_stream_get_stream_id (stream);
if (!stream_in_collection (collection, (gchar *) sid))
return FALSE;
}
return TRUE;
}
/** handle_stream_collection_locked:
* @dbin:
* @collection: (transfer none): The new collection for @input. Can be %NULL.
@ -2683,12 +2706,13 @@ handle_stream_collection_locked (GstDecodebin3 * dbin,
if (dbin->input_collection) {
GstStreamCollection *previous = dbin->input_collection->collection;
if (collection == previous) {
if (collections_are_identical (collection, previous)) {
GST_DEBUG_OBJECT (dbin, "Collection didn't change");
gst_object_unref (collection);
SELECTION_UNLOCK (dbin);
return NULL;
}
/* Check if this collection is an update of the previous one */
if (gst_stream_collection_get_size (collection) >
gst_stream_collection_get_size (previous)) {