pad: add methods to adjust the offset

Add methods to adjust the offset. This will be used to change the segment events
with an offset so that we can tweak the timing of the stream on a per-pad base.

diff --git a/gst/gstpad.c b/gst/gstpad.c
index b058b9e..c2ce2e5 100644 (file)
--- a/gst/gstpad.c
+++ b/gst/gstpad.c
@@ -3584,6 +3584,48 @@ flushing:
   }
 }
 
+/* pad offsets */
+
+/**
+ * gst_pad_get_offset:
+ * @pad: a #GstPad
+ *
+ * Get the offset applied to the running time of @pad.
+ *
+ * Returns: the offset.
+ */
+gint64
+gst_pad_get_offset (GstPad * pad)
+{
+  gint64 result;
+
+  g_return_val_if_fail (GST_IS_PAD (pad), 0);
+
+  GST_OBJECT_LOCK (pad);
+  result = pad->offset;
+  GST_OBJECT_UNLOCK (pad);
+
+  return result;
+}
+
+/**
+ * gst_pad_set_offset:
+ * @pad: a #GstPad
+ * @offset: the offset
+ *
+ * Set the offset that will be applied to the running time of @pad.
+ */
+void
+gst_pad_set_offset (GstPad * pad, gint64 offset)
+{
+  g_return_if_fail (GST_IS_PAD (pad));
+
+  GST_OBJECT_LOCK (pad);
+  pad->offset = offset;
+  GST_OBJECT_UNLOCK (pad);
+}
+
+
 /**********************************************************************
  * Data passing functions
  */

diff --git a/gst/gstpad.h b/gst/gstpad.h
index 18b7776..0e3c19b 100644 (file)
--- a/gst/gstpad.h
+++ b/gst/gstpad.h
@@ -630,6 +630,9 @@ struct _GstPad {
   GstPadGetRangeFunction        getrangefunc;
   GstPadEventFunction           eventfunc;
 
+  /* pad offset */
+  gint64                         offset;
+
   /* generic query method */
   GstPadQueryTypeFunction       querytypefunc;
   GstPadQueryFunction           queryfunc;
@@ -865,6 +868,10 @@ gboolean           gst_pad_peer_accept_caps                (GstPad * pad, GstCaps *caps);
 GstCaps *              gst_pad_get_allowed_caps                (GstPad * pad);
 GstCaps *               gst_pad_get_negotiated_caps             (GstPad * pad);
 
+/* pad offsets */
+gint64                  gst_pad_get_offset                      (GstPad *pad);
+void                    gst_pad_set_offset                      (GstPad *pad, gint64 offset);
+
 /* data passing functions to peer */
 GstFlowReturn          gst_pad_push                            (GstPad *pad, GstBuffer *buffer);
 GstFlowReturn          gst_pad_push_list                       (GstPad *pad, GstBufferList *list);