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decodebin3: Fix global group-id handling

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The goal of the "global" group-id is to fix new inputs that do not come from the
same "source" as others. In order to ensure all "current" streams have the same
group-id we distribute the first valid group-id to all streams.

This commit fixes two issues with that:

* When inputs are unlinked they weren't always properly resetted (it would only
  work if parsebin is used, which is no longer the default in
  uridecodebin3/playbin3).

* When computing the global group-id, take into account unset
  group-id (i.e. GST_GROUP_ID_INVALID).

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1698

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3712>
This commit is contained in:
Edward Hervey 2023-01-11 17:30:09 +01:00 committed by GStreamer Marge Bot
parent 4f0abc32e7
commit 1fe99ebae1
1 changed files with 21 additions and 10 deletions
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23
subprojects/gst-plugins-base/gst/playback/gstdecodebin3.c
View file

@ -816,6 +816,9 @@ set_input_group_id (DecodebinInput * input, guint32 * group_id)
GST_DEBUG_OBJECT (dbin,
"Setting current group id to %" G_GUINT32_FORMAT, *group_id);
dbin->current_group_id = *group_id;
} else {
GST_DEBUG_OBJECT (dbin, "Returning global group id %" G_GUINT32_FORMAT,
dbin->current_group_id);
}
*group_id = dbin->current_group_id;
return TRUE;
@ -979,19 +982,31 @@ recalculate_group_id (GstDecodebin3 * dbin)
guint32 common_group_id;
GList *iter;
GST_DEBUG_OBJECT (dbin,
"recalculating, current global group_id: %" G_GUINT32_FORMAT,
dbin->current_group_id);
common_group_id = dbin->main_input->group_id;
for (iter = dbin->other_inputs; iter; iter = iter->next) {
DecodebinInput *input = iter->data;
if (input->group_id != common_group_id)
if (input->group_id != common_group_id) {
if (common_group_id != GST_GROUP_ID_INVALID)
return;
common_group_id = input->group_id;
}
}
if (common_group_id == dbin->current_group_id) {
GST_DEBUG_OBJECT (dbin, "Global group_id hasn't changed");
} else {
GST_DEBUG_OBJECT (dbin, "Updating global group_id to %" G_GUINT32_FORMAT,
common_group_id);
dbin->current_group_id = common_group_id;
}
}
/* CALL with INPUT LOCK */
static void
@ -1032,12 +1047,8 @@ gst_decodebin3_input_pad_unlink (GstPad * pad, GstPad * peer,
GST_LOG_OBJECT (dbin, "Got unlink on input pad %" GST_PTR_FORMAT, pad);
INPUT_LOCK (dbin);
if (input->parsebin == NULL) {
INPUT_UNLOCK (dbin);
return;
}
if (GST_PAD_MODE (pad) == GST_PAD_MODE_PULL) {
if (input->parsebin && GST_PAD_MODE (pad) == GST_PAD_MODE_PULL) {
GST_DEBUG_OBJECT (dbin, "Resetting parsebin since it's pull-based");
reset_input_parsebin (dbin, input);
}