tests: add minimal basesrc ! sink seeking unit test

Should reproduce 'GStreamer-WARNING **: wrong STREAM_LOCK count 0'
warnings (with make pipelines/seek.torture or pipelines/seek.forever
anyway, since it appears to be racy).

https://bugzilla.gnome.org/show_bug.cgi?id=670846

tests/check/Makefile.am

@@ -89,6 +89,7 @@ REGISTRY_CHECKS =				\
 	libs/basesink				\
 	libs/controller				\
 	libs/typefindhelper			\
+	pipelines/seek				\
 	pipelines/stress			\
 	pipelines/queue-error
 endif

tests/check/pipelines/.gitignore

@@ -1,5 +1,6 @@
 .dirstamp
 cleanup
+seek
 simple-launch-lines
 stress
 parse-launch

tests/check/pipelines/seek.c

@@ -0,0 +1,226 @@
+/* GStreamer simple seek unit test
+ * Copyright (C) 2012 Collabora Ltd.
+ *   Author: Tim-Philipp Müller <tim.muller@collabora.co.uk>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstbasesrc.h>
+
+#include <gst/check/gstcheck.h>
+#include <gst/check/gstconsistencychecker.h>
+
+/* ========================================================================
+ *  Dummy source, like a stripped down audio test source
+ * ======================================================================== */
+
+#define SAMPLERATE 44100
+#define CHUNKS_PER_SEC 10
+
+typedef struct
+{
+  GstBaseSrc parent;
+  GstClockTime next_time;
+} TimedTestSrc;
+
+typedef struct
+{
+  GstBaseSrcClass parent_class;
+} TimedTestSrcClass;
+
+static GstStaticPadTemplate timed_test_src_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("timed/audio"));
+
+static GType timed_test_src_get_type (void);
+
+GST_BOILERPLATE (TimedTestSrc, timed_test_src, GstBaseSrc, GST_TYPE_BASE_SRC);
+
+static gboolean timed_test_src_is_seekable (GstBaseSrc * basesrc);
+static gboolean timed_test_src_check_get_range (GstBaseSrc * basesrc);
+static gboolean timed_test_src_do_seek (GstBaseSrc * basesrc,
+    GstSegment * segment);
+static gboolean timed_test_src_start (GstBaseSrc * basesrc);
+static gboolean timed_test_src_stop (GstBaseSrc * basesrc);
+static GstFlowReturn timed_test_src_create (GstBaseSrc * basesrc,
+    guint64 offset, guint length, GstBuffer ** buffer);
+
+static void
+timed_test_src_base_init (gpointer g_class)
+{
+  gst_element_class_add_static_pad_template (GST_ELEMENT_CLASS (g_class),
+      &timed_test_src_src_template);
+}
+
+static void
+timed_test_src_class_init (TimedTestSrcClass * klass)
+{
+  GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
+
+  gstbasesrc_class->is_seekable = timed_test_src_is_seekable;
+  gstbasesrc_class->check_get_range = timed_test_src_check_get_range;
+  gstbasesrc_class->do_seek = timed_test_src_do_seek;
+  gstbasesrc_class->start = timed_test_src_start;
+  gstbasesrc_class->stop = timed_test_src_stop;
+  gstbasesrc_class->create = timed_test_src_create;
+}
+
+static void
+timed_test_src_init (TimedTestSrc * src, TimedTestSrcClass * g_class)
+{
+  gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
+  gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
+}
+
+static gboolean
+timed_test_src_start (GstBaseSrc * basesrc)
+{
+  TimedTestSrc *src = (TimedTestSrc *) basesrc;
+
+  src->next_time = 0;
+  return TRUE;
+}
+
+static gboolean
+timed_test_src_stop (GstBaseSrc * basesrc)
+{
+  return TRUE;
+}
+
+static gboolean
+timed_test_src_do_seek (GstBaseSrc * basesrc, GstSegment * segment)
+{
+  TimedTestSrc *src = (TimedTestSrc *) basesrc;
+
+  src->next_time = segment->last_stop;
+  return TRUE;
+}
+
+static gboolean
+timed_test_src_is_seekable (GstBaseSrc * basesrc)
+{
+  return TRUE;
+}
+
+static gboolean
+timed_test_src_check_get_range (GstBaseSrc * basesrc)
+{
+  return FALSE;
+}
+
+static GstFlowReturn
+timed_test_src_create (GstBaseSrc * basesrc, guint64 offset, guint length,
+    GstBuffer ** buf)
+{
+  TimedTestSrc *src = (TimedTestSrc *) basesrc;
+
+  *buf = gst_buffer_new_and_alloc (SAMPLERATE / CHUNKS_PER_SEC);
+  GST_BUFFER_TIMESTAMP (*buf) = src->next_time;
+  GST_BUFFER_DURATION (*buf) = GST_SECOND / CHUNKS_PER_SEC;
+  src->next_time += GST_BUFFER_DURATION (*buf);
+  return GST_FLOW_OK;
+}
+
+/* ======================================================================== */
+
+GST_START_TEST (test_seek)
+{
+  GstStreamConsistency *consist;
+  GstMessage *msg;
+  GstElement *bin, *src1, *sink;
+  gboolean res;
+  GstPad *srcpad;
+  GstBus *bus;
+
+  GST_INFO ("preparing test");
+
+  /* build pipeline */
+  bin = gst_pipeline_new ("pipeline");
+  bus = gst_element_get_bus (bin);
+  gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
+
+  src1 = g_object_new (timed_test_src_get_type (), "name", "testsrc", NULL);
+
+  sink = gst_element_factory_make ("fakesink", "sink");
+  gst_bin_add_many (GST_BIN (bin), src1, sink, NULL);
+
+  res = gst_element_link (src1, sink);
+  fail_unless (res == TRUE, NULL);
+
+  srcpad = gst_element_get_static_pad (src1, "src");
+  consist = gst_consistency_checker_new (srcpad);
+  gst_object_unref (srcpad);
+
+  GST_INFO ("starting test");
+
+  /* prepare playing */
+  res = gst_element_set_state (bin, GST_STATE_PAUSED);
+  fail_unless (res != GST_STATE_CHANGE_FAILURE, NULL);
+
+  /* wait for completion */
+  res =
+      gst_element_get_state (GST_ELEMENT (bin), NULL, NULL,
+      GST_CLOCK_TIME_NONE);
+  fail_unless (res != GST_STATE_CHANGE_FAILURE, NULL);
+
+  res = gst_element_send_event (bin,
+      gst_event_new_seek (1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
+          GST_SEEK_TYPE_SET, (GstClockTime) 0,
+          GST_SEEK_TYPE_SET, (GstClockTime) 2 * GST_SECOND));
+  fail_unless (res == TRUE, NULL);
+
+  GST_INFO ("seeked");
+
+  /* run pipeline */
+  res = gst_element_set_state (bin, GST_STATE_PLAYING);
+  fail_unless (res != GST_STATE_CHANGE_FAILURE, NULL);
+
+  msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE,
+      GST_MESSAGE_EOS | GST_MESSAGE_ERROR);
+  fail_unless_equals_string (GST_MESSAGE_TYPE_NAME (msg), "eos");
+  gst_message_unref (msg);
+
+  res = gst_element_set_state (bin, GST_STATE_NULL);
+  fail_unless (res != GST_STATE_CHANGE_FAILURE, NULL);
+
+  /* cleanup */
+  gst_consistency_checker_free (consist);
+  gst_object_unref (bus);
+  gst_object_unref (bin);
+}
+
+GST_END_TEST;
+
+static Suite *
+pipelines_seek_suite (void)
+{
+  Suite *s = suite_create ("pipelines-seek");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_seek);
+
+  return s;
+}
+
+GST_CHECK_MAIN (pipelines_seek);