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identity: refactor and add tests using GstHarness
Writing a test for unscheduling the gst_clock_id_wait inside the identity element, found an invalid read, caused by removing the clock-id when calling _unschedule instead of letting the code calling _wait remove the clock-id after being unscheduled. https://bugzilla.gnome.org/show_bug.cgi?id=752055
This commit is contained in:
Havard Graff
Sebastian Dröge
parent
b5cc88594e
commit
ee63702d61
2 changed files with 144 additions and 84 deletions
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@ -401,8 +401,6 @@ gst_identity_sink_event (GstBaseTransform * trans, GstEvent * event)
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if (identity->clock_id) {
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GST_DEBUG_OBJECT (identity, "unlock clock wait");
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gst_clock_id_unschedule (identity->clock_id);
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gst_clock_id_unref (identity->clock_id);
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identity->clock_id = NULL;
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}
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GST_OBJECT_UNLOCK (identity);
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}
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@ -886,8 +884,6 @@ gst_identity_change_state (GstElement * element, GstStateChange transition)
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if (identity->clock_id) {
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GST_DEBUG_OBJECT (identity, "unlock clock wait");
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gst_clock_id_unschedule (identity->clock_id);
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gst_clock_id_unref (identity->clock_id);
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identity->clock_id = NULL;
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}
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identity->blocked = FALSE;
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g_cond_broadcast (&identity->blocked_cond);
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@ -3,6 +3,7 @@
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* unit test for identity
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*
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* Copyright (C) <2005> Thomas Vander Stichele <thomas at apestaart dot org>
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* Copyright (C) <2015> Havard Graff <havard@pexip.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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@ -20,100 +21,159 @@
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* Boston, MA 02110-1301, USA.
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*/
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#include <unistd.h>
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#include <gst/check/gstcheck.h>
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static gboolean have_eos = FALSE;
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/* For ease of programming we use globals to keep refs for our floating
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* src and sink pads we create; otherwise we always have to do get_pad,
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* get_peer, and then remove references in every test function */
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static GstPad *mysrcpad, *mysinkpad;
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static gboolean
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event_func (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
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have_eos = TRUE;
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}
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gst_event_unref (event);
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return TRUE;
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}
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static GstElement *
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setup_identity (void)
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{
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GstElement *identity;
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GST_DEBUG ("setup_identity");
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identity = gst_check_setup_element ("identity");
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mysrcpad = gst_check_setup_src_pad (identity, &srctemplate);
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mysinkpad = gst_check_setup_sink_pad (identity, &sinktemplate);
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gst_pad_set_event_function (mysinkpad, event_func);
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gst_pad_set_active (mysrcpad, TRUE);
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gst_pad_set_active (mysinkpad, TRUE);
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return identity;
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}
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static void
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cleanup_identity (GstElement * identity)
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{
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GST_DEBUG ("cleanup_identity");
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gst_pad_set_active (mysrcpad, FALSE);
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gst_pad_set_active (mysinkpad, FALSE);
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gst_check_teardown_src_pad (identity);
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gst_check_teardown_sink_pad (identity);
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gst_check_teardown_element (identity);
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}
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#include <gst/check/gstharness.h>
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GST_START_TEST (test_one_buffer)
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{
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GstElement *identity;
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GstBuffer *buffer;
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GstSegment segment;
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GstHarness *h = gst_harness_new ("identity");
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GstBuffer *buffer_in;
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GstBuffer *buffer_out;
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identity = setup_identity ();
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fail_unless (gst_element_set_state (identity,
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GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
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"could not set to playing");
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gst_harness_set_src_caps_str (h, "mycaps");
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gst_segment_init (&segment, GST_FORMAT_BYTES);
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gst_pad_push_event (mysrcpad, gst_event_new_stream_start ("test"));
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gst_pad_push_event (mysrcpad, gst_event_new_segment (&segment));
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buffer_in = gst_buffer_new_and_alloc (4);
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ASSERT_BUFFER_REFCOUNT (buffer_in, "buffer", 1);
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buffer = gst_buffer_new_and_alloc (4);
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ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 1);
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gst_buffer_fill (buffer, 0, "data", 4);
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gst_buffer_fill (buffer_in, 0, "data", 4);
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/* pushing gives away my reference ... */
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fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK,
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"Failed pushing buffer to identity");
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fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h, buffer_in));
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/* ... but it should end up being collected on the global buffer list */
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fail_unless (g_list_length (buffers) == 1);
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fail_unless ((GstBuffer *) (g_list_first (buffers)->data) == buffer);
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ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 1);
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/* ... but it should end up being collected on GstHarness queue */
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fail_unless_equals_int (1, gst_harness_buffers_in_queue (h));
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buffer_out = gst_harness_pull (h);
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fail_unless (buffer_in == buffer_out);
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ASSERT_BUFFER_REFCOUNT (buffer_out, "buffer", 1);
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/* cleanup */
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cleanup_identity (identity);
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gst_buffer_unref (buffer_out);
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gst_harness_teardown (h);
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}
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GST_END_TEST;
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static void
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handoff_func (GstElement * identity, GstBuffer * buf, GstBuffer ** ret)
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{
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(void)identity;
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*ret = buf;
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}
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GST_START_TEST (test_signal_handoffs)
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{
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GstHarness *h = gst_harness_new ("identity");
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GstBuffer *buffer_in;
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GstBuffer *buffer_signaled = NULL;
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gst_harness_set_src_caps_str (h, "mycaps");
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/* connect to the handoff signal */
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g_signal_connect (h->element, "handoff",
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G_CALLBACK (handoff_func), &buffer_signaled);
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/* first, turn off signal-handoffs */
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g_object_set (h->element, "signal-handoffs", FALSE, NULL);
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/* then push a buffer */
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buffer_in = gst_buffer_new_and_alloc (4);
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fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h, buffer_in));
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/* verify that we got no buffer signaled */
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fail_unless (buffer_signaled == NULL);
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/* now turn on signal-handoffs */
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g_object_set (h->element, "signal-handoffs", TRUE, NULL);
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/* then push another buffer */
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buffer_in = gst_buffer_new_and_alloc (4);
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fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h, buffer_in));
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/* verify the buffer signaled is equal to the one pushed in */
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fail_unless (buffer_signaled == buffer_in);
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ASSERT_BUFFER_REFCOUNT (buffer_signaled, "buffer", 1);
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/* cleanup */
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gst_harness_teardown (h);
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}
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GST_END_TEST;
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GST_START_TEST (test_sync_on_timestamp)
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{
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/* the reason to use the queue in front of the identity element
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is to effectively make gst_harness_push asynchronous, not locking
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up the test, waiting for gst_clock_id_wait */
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GstHarness * h = gst_harness_new_parse ("queue ! identity sync=1");
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GstBuffer *buf;
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GstClock *clock;
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GstClockTime timestamp = 123456789;
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/* use testclock */
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gst_harness_use_testclock (h);
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gst_harness_set_src_caps_str (h, "mycaps");
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/* make a buffer and set the timestamp */
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buf = gst_buffer_new ();
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GST_BUFFER_PTS (buf) = timestamp;
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/* push the buffer, and verify it does *not* make it through */
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gst_harness_push (h, buf);
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fail_unless_equals_int (0, gst_harness_buffers_in_queue (h));
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/* verify the identity element has registered exactly one GstClockID */
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fail_unless (gst_harness_wait_for_clock_id_waits (h, 1, 42));
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/* crank the clock and pull the buffer */
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gst_harness_crank_single_clock_wait (h);
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buf = gst_harness_pull (h);
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/* verify that the buffer has the right timestamp, and that the time on
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the clock is equal to the timestamp */
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fail_unless_equals_int64 (timestamp, GST_BUFFER_PTS (buf));
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clock = gst_element_get_clock (h->element);
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fail_unless_equals_int64 (timestamp, gst_clock_get_time (clock));
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/* cleanup */
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gst_object_unref (clock);
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gst_buffer_unref (buf);
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gst_harness_teardown (h);
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}
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GST_END_TEST;
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GST_START_TEST (test_stopping_element_unschedules_sync)
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{
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/* the reason to use the queue in front of the identity element
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is to effectively make gst_harness_push asynchronous, not locking
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up the test, waiting for gst_clock_id_wait */
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GstHarness * h = gst_harness_new_parse ("queue ! identity sync=1");
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GstBuffer *buf;
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GstClockTime timestamp = 123456789;
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/* use testclock */
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gst_harness_use_testclock (h);
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gst_harness_set_src_caps_str (h, "mycaps");
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/* make a buffer and set the timestamp */
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buf = gst_buffer_new ();
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GST_BUFFER_PTS (buf) = timestamp;
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/* push the buffer, and verify it does *not* make it through */
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gst_harness_push (h, buf);
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fail_unless_equals_int (0, gst_harness_buffers_in_queue (h));
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/* verify the identity element has registered exactly one GstClockID */
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fail_unless (gst_harness_wait_for_clock_id_waits (h, 1, 42));
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/* setting identity to READY should unschedule the sync */
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gst_element_set_state (h->element, GST_STATE_READY);
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/* verify the identity element no longer waits on the clock */
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fail_unless (gst_harness_wait_for_clock_id_waits (h, 0, 42));
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/* and that the waiting buffer was dropped */
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fail_unless_equals_int (0, gst_harness_buffers_received (h));
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gst_harness_teardown (h);
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}
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GST_END_TEST;
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static Suite *
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@ -124,6 +184,10 @@ identity_suite (void)
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suite_add_tcase (s, tc_chain);
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tcase_add_test (tc_chain, test_one_buffer);
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tcase_add_test (tc_chain, test_signal_handoffs);
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tcase_add_test (tc_chain, test_sync_on_timestamp);
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tcase_add_test (tc_chain, test_stopping_element_unschedules_sync);
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return s;
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}
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