tests: capsfilter-renegotiation: Adds a new unit test

Adds a new test for checking that capsfilter 'caps' property
changes cause caps renegotiation on the pipeline.

tests/check/Makefile.am

@@ -122,7 +122,8 @@ check_PROGRAMS = \
 	libs/video \
 	pipelines/simple-launch-lines \
 	pipelines/streamheader \
-	pipelines/basetime
+	pipelines/basetime \
+	pipelines/capsfilter-renegotiation
 
 # TORTURE_TO_FIX = \
 #       elements/adder

tests/check/pipelines/capsfilter-renegotiation.c

@@ -0,0 +1,171 @@
+/* GStreamer
+ * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
+ *
+ * capsfilter-renegotiation.c: Unit test for capsfilter caps renegotiation
+ *
+ * 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.
+ */
+
+/* Ideally this would be in core, but using videotestsrc makes it easier */
+
+#include <gst/check/gstcheck.h>
+
+#define FIRST_CAPS  "video/x-raw-yuv,width=(int)480,height=(int)320"
+#define SECOND_CAPS "video/x-raw-yuv,width=(int)120,height=(int)100"
+#define THIRD_CAPS  "video/x-raw-yuv,width=(int)[10,50],height=(int)[100,200]"
+#define FOURTH_CAPS "video/x-raw-rgb,width=(int)300,height=(int)[25,75];" \
+                    "video/x-raw-yuv,width=(int)[30,40]," \
+                    "height=(int)[100,200],format=(fourcc)YUY2"
+
+int buffer_count = 0;
+GstCaps *current_caps = NULL;
+int caps_change = 0;
+
+static gboolean
+buffer_probe (GstPad * pad, GstMiniObject * obj, gpointer data)
+{
+  GstBuffer *buffer;
+  GstCaps *buffer_caps;
+  GstElement *capsfilter = GST_ELEMENT (data);
+  GstCaps *caps = NULL;
+
+  buffer = GST_BUFFER (obj);
+
+  /* increment the buffer count and check if it is time to change the caps */
+  buffer_count++;
+  if (buffer_count == 50) {
+    /* change the caps to another one */
+    caps = gst_caps_from_string (SECOND_CAPS);
+  } else if (buffer_count == 100) {
+    /* change the caps to another one, this time unfixed */
+    caps = gst_caps_from_string (THIRD_CAPS);
+  } else if (buffer_count == 150) {
+    /* change the caps to another one,
+     * this time unfixed with multiple entries */
+    caps = gst_caps_from_string (FOURTH_CAPS);
+  }
+  /* set the caps */
+  if (caps) {
+    g_object_set (capsfilter, "caps", caps, NULL);
+    gst_caps_unref (caps);
+  }
+
+  /* now check if the buffer caps has changed since last check */
+  buffer_caps = GST_BUFFER_CAPS (buffer);
+  if (current_caps == NULL && buffer_caps != NULL) {
+    /* probably the first caps, this is a change */
+    current_caps = gst_caps_copy (buffer_caps);
+    caps_change++;
+  } else if (current_caps != NULL) {
+    if (buffer_caps == NULL) {
+      /* caps was set to NULL, we consider this a change */
+      gst_caps_unref (current_caps);
+      current_caps = NULL;
+      caps_change++;
+    } else {
+      if (!gst_caps_is_equal (current_caps, buffer_caps)) {
+        /* a caps change */
+        gst_caps_unref (current_caps);
+        current_caps = gst_caps_copy (buffer_caps);
+        caps_change++;
+      }
+    }
+  }
+
+  return TRUE;
+}
+
+GST_START_TEST (test_capsfilter_renegotiation)
+{
+  GstElement *capsfilter;
+  GstElement *sink;
+  GstElement *pipeline;
+  GstBus *bus;
+  GstMessage *msg;
+  GstPad *pad;
+
+  caps_change = 0;
+  buffer_count = 0;
+  if (current_caps)
+    gst_caps_unref (current_caps);
+  current_caps = NULL;
+
+  pipeline = gst_parse_launch ("videotestsrc num-buffers=200 ! capsfilter "
+      "caps=\"" FIRST_CAPS "\" name=cf ! fakesink name=sink", NULL);
+  g_assert (pipeline);
+
+  capsfilter = gst_bin_get_by_name (GST_BIN (pipeline), "cf");
+  g_assert (capsfilter);
+
+  sink = gst_bin_get_by_name (GST_BIN (pipeline), "sink");
+  g_assert (sink);
+
+  pad = gst_element_get_static_pad (sink, "sink");
+  gst_pad_add_buffer_probe (pad, (GCallback) buffer_probe, capsfilter);
+  gst_object_unref (pad);
+
+  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+
+  g_assert (gst_element_set_state (pipeline, GST_STATE_PLAYING) !=
+      GST_STATE_CHANGE_FAILURE);
+
+  msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE,
+      GST_MESSAGE_EOS | GST_MESSAGE_ERROR);
+
+  g_assert (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_EOS);
+
+  g_assert (caps_change == 4);
+
+  gst_element_set_state (pipeline, GST_STATE_NULL);
+
+  if (current_caps)
+    gst_caps_unref (current_caps);
+  gst_message_unref (msg);
+  g_object_unref (G_OBJECT (pipeline));
+}
+
+GST_END_TEST;
+
+static Suite *
+capsfilter_renegotiation_suite (void)
+{
+  Suite *s = suite_create ("CapsfilterRenegotiation");
+  TCase *tc_chain = tcase_create ("linear");
+
+  /* time out after 60s, not the default 3 */
+  tcase_set_timeout (tc_chain, 60);
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_capsfilter_renegotiation);
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = capsfilter_renegotiation_suite ();
+  SRunner *sr = srunner_create (s);
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}