From f0df840345f4b790d7cf119bb87f9dc4ca3b3eae Mon Sep 17 00:00:00 2001
From: Andy Wingo <wingo@pobox.com>
Date: Mon, 17 Dec 2007 15:00:15 +0000
Subject: gst/switch/gstswitch.h (struct _GstStreamSelector):
 gst/switch/gstswitch.c (gst_stream_selector_wait) (gst_selector_p...

Original commit message from CVS:
2007-12-17  Andy Wingo  <wingo@pobox.com>

* gst/switch/gstswitch.h (struct _GstStreamSelector):

* gst/switch/gstswitch.c (gst_stream_selector_wait)
(gst_selector_pad_chain, gst_stream_selector_init)
(gst_stream_selector_dispose): Add infrastructure for new blocking
mechanism that does not use gst_pad_set_blocked, which does not
work on sink pads. Patch 7/12.
---
 gst/switch/gstswitch.c | 31 ++++++++++++++++++++++++++++++-
 gst/switch/gstswitch.h |  1 +
 2 files changed, 31 insertions(+), 1 deletion(-)

(limited to 'gst/switch')

diff --git a/gst/switch/gstswitch.c b/gst/switch/gstswitch.c
index e7456dce..9201e084 100644
--- a/gst/switch/gstswitch.c
+++ b/gst/switch/gstswitch.c
@@ -314,6 +314,25 @@ gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
   return result;
 }
 
+static gboolean
+gst_stream_selector_wait (GstStreamSelector * self, GstPad * pad)
+{
+  gboolean flushing;
+
+  GST_OBJECT_LOCK (self);
+
+  while (self->blocked)
+    g_cond_wait (self->blocked_cond, GST_OBJECT_GET_LOCK (self));
+
+  GST_OBJECT_UNLOCK (self);
+
+  GST_OBJECT_LOCK (pad);
+  flushing = GST_PAD_IS_FLUSHING (pad);
+  GST_OBJECT_UNLOCK (pad);
+
+  return flushing;
+}
+
 static GstFlowReturn
 gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
 {
@@ -328,6 +347,9 @@ gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
   selpad = GST_SELECTOR_PAD_CAST (pad);
   seg = &selpad->segment;
 
+  if (gst_stream_selector_wait (sel, pad))
+    goto ignore;
+
   active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
 
   timestamp = GST_BUFFER_TIMESTAMP (buf);
@@ -368,7 +390,6 @@ ignore:
     res = GST_FLOW_NOT_LINKED;
     goto done;
   }
-
 }
 
 static void gst_stream_selector_dispose (GObject * object);
@@ -497,6 +518,9 @@ gst_stream_selector_init (GstStreamSelector * sel)
   sel->active_sinkpad = NULL;
   sel->nb_sinkpads = 0;
   gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
+
+  sel->blocked_cond = g_cond_new ();
+  sel->blocked = FALSE;
 }
 
 static void
@@ -509,6 +533,11 @@ gst_stream_selector_dispose (GObject * object)
     sel->active_sinkpad = NULL;
   }
 
+  if (sel->blocked_cond) {
+    g_cond_free (sel->blocked_cond);
+    sel->blocked_cond = NULL;
+  }
+
   G_OBJECT_CLASS (parent_class)->dispose (object);
 }
 
diff --git a/gst/switch/gstswitch.h b/gst/switch/gstswitch.h
index 3bb88204..7ede7346 100644
--- a/gst/switch/gstswitch.h
+++ b/gst/switch/gstswitch.h
@@ -49,6 +49,7 @@ struct _GstStreamSelector {
 
   GstSegment segment;
 
+  GCond *blocked_cond;
   gboolean blocked;
   gboolean pending_stop;
   GstSegment pending_stop_segment;
-- 
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