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Code Issues 1 Projects Releases Wiki Activity

decodebin3: Fix memory issues with active selection list

Browse source 
This had a couple of issues:
* The backing strings (from GstStream) could disappear
* The actual list wasn't properly reset/freed when decodebin3 was re-used

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3083>
This commit is contained in:
Edward Hervey 2022-09-27 13:41:37 +02:00 committed by Edward Hervey
parent 02a8f9973b
commit c22ddbc187
1 changed files with 10 additions and 4 deletions
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14
subprojects/gst-plugins-base/gst/playback/gstdecodebin3.c
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@ -662,7 +662,7 @@ gst_decodebin3_dispose (GObject * object)
if (dbin->decodable_factories)
g_list_free (dbin->decodable_factories);
g_list_free_full (dbin->requested_selection, g_free);
g_list_free (dbin->active_selection);
g_list_free_full (dbin->active_selection, g_free);
g_list_free (dbin->to_activate);
g_list_free (dbin->pending_select_streams);
g_clear_object (&dbin->collection);
@ -1800,8 +1800,9 @@ get_output_for_slot (MultiQueueSlot * slot)
output->slot = slot;
GST_DEBUG ("Linking slot %p to new output %p", slot, output);
slot->output = output;
GST_DEBUG ("Adding '%s' to active_selection", stream_id);
dbin->active_selection =
g_list_append (dbin->active_selection, (gchar *) stream_id);
g_list_append (dbin->active_selection, (gchar *) g_strdup (stream_id));
} else
GST_DEBUG ("Not creating any output for slot %p", slot);
@ -2641,8 +2642,10 @@ reassign_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot)
slot->output = NULL;
output->slot = NULL;
/* Remove sid from active selection */
GST_DEBUG ("Removing '%s' from active_selection", sid);
for (tmp = dbin->active_selection; tmp; tmp = tmp->next)
if (!g_strcmp0 (sid, tmp->data)) {
g_free (tmp->data);
dbin->active_selection = g_list_delete_link (dbin->active_selection, tmp);
break;
}
@ -2660,7 +2663,7 @@ reassign_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot)
/* Pass target stream id to requested selection */
dbin->requested_selection =
g_list_append (dbin->requested_selection, g_strdup (tmp->data));
dbin->to_activate = g_list_remove (dbin->to_activate, tmp->data);
dbin->to_activate = g_list_delete_link (dbin->to_activate, tmp);
break;
}
}
@ -2670,8 +2673,9 @@ reassign_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot)
target_slot, tsid);
target_slot->output = output;
output->slot = target_slot;
GST_DEBUG ("Adding '%s' to active_selection", tsid);
dbin->active_selection =
g_list_append (dbin->active_selection, (gchar *) tsid);
g_list_append (dbin->active_selection, (gchar *) g_strdup (tsid));
SELECTION_UNLOCK (dbin);
/* Wakeup the target slot so that it retries to send events/buffers
@ -3182,6 +3186,8 @@ gst_decodebin3_change_state (GstElement * element, GstStateChange transition)
dbin->default_mq_min_interleave, NULL);
dbin->current_mq_min_interleave = dbin->default_mq_min_interleave;
dbin->upstream_selected = FALSE;
g_list_free_full (dbin->active_selection, g_free);
dbin->active_selection = NULL;
}
break;
default: