aggregator: Initialize source pad segment position to -1 when resetting

This allows start-time selection in gst_aggregator_pad_chain_internal()
to actually work as that code assumes it to be -1 for actually
overriding the value.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/500

diff --git a/libs/gst/base/gstaggregator.c b/libs/gst/base/gstaggregator.c
index fb2100b..b22a5f7 100644 (file)
--- a/libs/gst/base/gstaggregator.c
+++ b/libs/gst/base/gstaggregator.c
@@ -519,6 +519,9 @@ gst_aggregator_reset_flow_values (GstAggregator * self)
   self->priv->send_segment = TRUE;
   gst_segment_init (&GST_AGGREGATOR_PAD (self->srcpad)->segment,
       GST_FORMAT_TIME);
+  /* Initialize to -1 so we set it to the start position once the first buffer
+   * is handled in gst_aggregator_pad_chain_internal() */
+  GST_AGGREGATOR_PAD (self->srcpad)->segment.position = -1;
   self->priv->first_buffer = TRUE;
   GST_OBJECT_UNLOCK (self);
 }