--- /dev/null
+/* GStreamer
+ *
+ * unit testing helper lib
+ *
+ * Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:gstcheckconsistencychecker
+ * @short_description: Data flow consistency checker for GStreamer unit tests.
+ *
+ * These macros and functions are for internal use of the unit tests found
+ * inside the 'check' directories of various GStreamer packages.
+ *
+ * Since: 0.10.24
+ */
+
+#include "gstconsistencychecker.h"
+
+static gboolean
+source_pad_data_cb (GstPad * pad, GstMiniObject * data,
+ GstStreamConsistency * consist)
+{
+ if (GST_IS_BUFFER (data)) {
+ GST_DEBUG_OBJECT (pad, "Buffer %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (GST_BUFFER (data))));
+ /* If an EOS went through, a buffer would be invalid */
+ fail_if (consist->eos, "Buffer received after EOS");
+ /* Buffers need to be preceded by a newsegment event */
+ fail_unless (consist->newsegment, "Buffer received without newsegment");
+ } else {
+ GstEvent *event = (GstEvent *) data;
+
+ GST_DEBUG_OBJECT (pad, "%s", GST_EVENT_TYPE_NAME (event));
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ consist->flushing = TRUE;
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ /* Receiving a flush-stop is only valid after receiving a flush-start */
+ fail_unless (consist->flushing,
+ "Received a FLUSH_STOP without a FLUSH_START");
+ fail_if (consist->eos, "Received a FLUSH_STOP after an EOS");
+ consist->flushing = FALSE;
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ consist->newsegment = TRUE;
+ consist->eos = FALSE;
+ break;
+ case GST_EVENT_EOS:
+ /* FIXME : not 100% sure about whether two eos in a row is valid */
+ fail_if (consist->eos, "Received EOS just after another EOS");
+ consist->eos = TRUE;
+ consist->newsegment = FALSE;
+ break;
+ case GST_EVENT_TAG:
+ GST_DEBUG_OBJECT (pad, "tag %" GST_PTR_FORMAT, event->structure);
+ default:
+ if (GST_EVENT_IS_SERIALIZED (event) && GST_EVENT_IS_DOWNSTREAM (event)) {
+ fail_if (consist->eos, "Event received after EOS");
+ fail_unless (consist->newsegment, "Event received before newsegment");
+ }
+ /* FIXME : Figure out what to do for other events */
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+/**
+ * gst_consistency_checker_new:
+ * @pad: The #GstPad on which the dataflow will be checked.
+ *
+ * Sets up a data probe on the given pad which will raise assertions if the
+ * data flow is inconsistent.
+ *
+ * Currently only works for source pads.
+ *
+ * Returns: A #GstStreamConsistency structure used to track data flow.
+ *
+ * Since: 0.10.24
+ */
+
+GstStreamConsistency *
+gst_consistency_checker_new (GstPad * pad)
+{
+ GstStreamConsistency *consist;
+
+ g_return_val_if_fail (pad != NULL, NULL);
+
+ consist = g_new0 (GstStreamConsistency, 1);
+ consist->pad = g_object_ref (pad);
+ consist->probeid =
+ gst_pad_add_data_probe (pad, (GCallback) source_pad_data_cb, consist);
+
+ return consist;
+}
+
+/**
+ * gst_consistency_checker_reset:
+ * @consist: The #GstStreamConsistency to reset.
+ *
+ * Reset the stream checker's internal variables.
+ *
+ * Since: 0.10.24
+ */
+
+void
+gst_consistency_checker_reset (GstStreamConsistency * consist)
+{
+ consist->eos = FALSE;
+ consist->flushing = FALSE;
+ consist->newsegment = FALSE;
+}
+
+/**
+ * gst_consistency_checker_free:
+ * @consist: The #GstStreamConsistency to free.
+ *
+ * Frees the allocated data and probe associated with @consist.
+ *
+ * Since: 0.10.24
+ */
+
+void
+gst_consistency_checker_free (GstStreamConsistency * consist)
+{
+ /* Remove the data probe */
+ gst_pad_remove_data_probe (consist->pad, consist->probeid);
+ g_object_unref (consist->pad);
+ g_free (consist);
+}
--- /dev/null
+/* GStreamer
+ *
+ * unit testing helper lib
+ *
+ * Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_CONSISTENCY_CHECKER_H__
+#define __GST_CONSISTENCY_CHECKER_H__
+
+#include <gst/check/gstcheck.h>
+
+typedef struct _GstStreamConsistency
+{
+ gboolean flushing;
+ gboolean newsegment;
+ gboolean eos;
+ gulong probeid;
+ GstPad *pad;
+} GstStreamConsistency;
+
+G_BEGIN_DECLS
+
+GstStreamConsistency *
+gst_consistency_checker_new (GstPad *pad);
+void gst_consistency_checker_reset (GstStreamConsistency *consist);
+void gst_consistency_checker_free (GstStreamConsistency *consist);
+
+G_END_DECLS
+
+#endif /* __GST_CONSISTENCY_CHECKER_H__ */