From d0e4331648a4609d7a623166d151f44560836e82 Mon Sep 17 00:00:00 2001
From: Jan Schmidt <thaytan@noraisin.net>
Date: Sun, 1 Nov 2009 23:16:18 +0100
Subject: [PATCH] resindvd: Add gst_base_src_new_seamless_segment() to
 GstBaseSrc copy

Add a new function to the internal copy of GstBaseSrc for starting a new
seamless segment.
---
 ext/resindvd/rsnbasesrc.c | 63 +++++++++++++++++++++++++++++++++++++++
 ext/resindvd/rsnbasesrc.h |  1 +
 2 files changed, 64 insertions(+)

diff --git a/ext/resindvd/rsnbasesrc.c b/ext/resindvd/rsnbasesrc.c
index 92760c0bcd..b1e8a44d41 100644
--- a/ext/resindvd/rsnbasesrc.c
+++ b/ext/resindvd/rsnbasesrc.c
@@ -569,6 +569,69 @@ gst_base_src_get_do_timestamp (RsnBaseSrc * src)
   return res;
 }
 
+/**
+ * gst_base_src_new_seamless_segment:
+ * @src: The source
+ * @start: The new start value for the segment
+ * @stop: Stop value for the new segment
+ * @position: The position value for the new segent
+ *
+ * Prepare a new seamless segment for emission downstream. This function must
+ * only be called by derived sub-classes, and only from the create() function,
+ * as the stream-lock needs to be held.
+ *
+ * The format for the new segment will be the current format of the source, as
+ * configured with gst_base_src_set_format()
+ * 
+ * Returns: %TRUE if preparation of the seamless segment succeeded.
+ *
+ * Since: 0.10.26
+ */
+gboolean
+gst_base_src_new_seamless_segment (RsnBaseSrc * src, gint64 start, gint64 stop,
+    gint64 position)
+{
+  gboolean res = TRUE;
+
+  GST_DEBUG_OBJECT (src,
+      "Starting new seamless segment. Start %" GST_TIME_FORMAT " stop %"
+      GST_TIME_FORMAT " position %" GST_TIME_FORMAT, GST_TIME_ARGS (start),
+      GST_TIME_ARGS (stop), GST_TIME_ARGS (position));
+
+  if (src->data.ABI.running) {
+    if (src->priv->close_segment)
+      gst_event_unref (src->priv->close_segment);
+    src->priv->close_segment =
+        gst_event_new_new_segment_full (TRUE,
+        src->segment.rate, src->segment.applied_rate, src->segment.format,
+        src->segment.start, src->segment.last_stop, src->segment.time);
+  }
+
+  gst_segment_set_newsegment_full (&src->segment, FALSE, src->segment.rate,
+      src->segment.applied_rate, src->segment.format, start, stop, position);
+
+  if (src->priv->start_segment)
+    gst_event_unref (src->priv->start_segment);
+  if (src->segment.rate >= 0.0) {
+    /* forward, we send data from last_stop to stop */
+    src->priv->start_segment =
+        gst_event_new_new_segment_full (FALSE,
+        src->segment.rate, src->segment.applied_rate, src->segment.format,
+        src->segment.last_stop, stop, src->segment.time);
+  } else {
+    /* reverse, we send data from last_stop to start */
+    src->priv->start_segment =
+        gst_event_new_new_segment_full (FALSE,
+        src->segment.rate, src->segment.applied_rate, src->segment.format,
+        src->segment.start, src->segment.last_stop, src->segment.time);
+  }
+
+  src->priv->discont = TRUE;
+  src->data.ABI.running = TRUE;
+
+  return res;
+}
+
 static gboolean
 gst_base_src_setcaps (GstPad * pad, GstCaps * caps)
 {
diff --git a/ext/resindvd/rsnbasesrc.h b/ext/resindvd/rsnbasesrc.h
index 1dd9f7f5a4..e7bd3fa56e 100644
--- a/ext/resindvd/rsnbasesrc.h
+++ b/ext/resindvd/rsnbasesrc.h
@@ -254,6 +254,7 @@ gulong          gst_base_src_get_blocksize    (RsnBaseSrc *src);
 void            gst_base_src_set_do_timestamp (RsnBaseSrc *src, gboolean timestamp);
 gboolean        gst_base_src_get_do_timestamp (RsnBaseSrc *src);
 
+gboolean        gst_base_src_new_seamless_segment (RsnBaseSrc *src, gint64 start, gint64 stop, gint64 position);
 G_END_DECLS
 
 #endif /* __RSN_BASE_SRC_H__ */