1 /* GstTestClock - A deterministic clock for GStreamer unit tests
3 * Copyright (C) 2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
4 * Copyright (C) 2012 Sebastian Rasmussen <sebastian.rasmussen@axis.com>
5 * Copyright (C) 2012 Havard Graff <havard@pexip.com>
6 * Copyright (C) 2013 Haakon Sporsheim <haakon@pexip.com>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
25 * SECTION:gsttestclock
26 * @short_description: Controllable, deterministic clock for GStreamer unit tests
27 * @see_also: #GstSystemClock, #GstClock
29 * GstTestClock is an implementation of #GstClock which has different
30 * behaviour compared to #GstSystemClock. Time for #GstSystemClock advances
31 * according to the system time, while time for #GstTestClock changes only
32 * when gst_test_clock_set_time() or gst_test_clock_advance_time() are
33 * called. #GstTestClock provides unit tests with the possibility to
34 * precisely advance the time in a deterministic manner, independent of the
35 * system time or any other external factors.
38 * <title>Advancing the time of a #GstTestClock</title>
39 * <programlisting language="c">
40 * #include <gst/gst.h>
41 * #include <gst/check/gsttestclock.h>
44 * GstTestClock *test_clock;
46 * clock = gst_test_clock_new ();
47 * test_clock = GST_TEST_CLOCK (clock);
48 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
49 * gst_test_clock_advance_time ( test_clock, 1 * GST_SECOND);
50 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
51 * g_usleep (10 * G_USEC_PER_SEC);
52 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
53 * gst_test_clock_set_time (test_clock, 42 * GST_SECOND);
54 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
59 * #GstClock allows for setting up single shot or periodic clock notifications
60 * as well as waiting for these notifications synchronously (using
61 * gst_clock_id_wait()) or asynchronously (using gst_clock_id_wait_async() or
62 * gst_clock_id_wait_async()). This is used by many GStreamer elements,
63 * among them #GstBaseSrc and #GstBaseSink.
65 * #GstTestClock keeps track of these clock notifications. By calling
66 * gst_test_clock_wait_for_next_pending_id() or
67 * gst_test_clock_wait_for_multiple_pending_ids() a unit tests may wait for the
68 * next one or several clock notifications to be requested. Additionally unit
69 * tests may release blocked waits in a controlled fashion by calling
70 * gst_test_clock_process_next_clock_id(). This way a unit test can control the
71 * inaccuracy (jitter) of clock notifications, since the test can decide to
72 * release blocked waits when the clock time has advanced exactly to, or past,
73 * the requested clock notification time.
75 * There are also interfaces for determining if a notification belongs to a
76 * #GstTestClock or not, as well as getting the number of requested clock
77 * notifications so far.
79 * N.B.: When a unit test waits for a certain amount of clock notifications to
80 * be requested in gst_test_clock_wait_for_next_pending_id() or
81 * gst_test_clock_wait_for_multiple_pending_ids() then these functions may block
82 * for a long time. If they block forever then the expected clock notifications
83 * were never requested from #GstTestClock, and so the assumptions in the code
84 * of the unit test are wrong. The unit test case runner in gstcheck is
85 * expected to catch these cases either by the default test case timeout or the
86 * one set for the unit test by calling tcase_set_timeout\(\).
88 * The sample code below assumes that the element under test will delay a
89 * buffer pushed on the source pad by some latency until it arrives on the sink
90 * pad. Moreover it is assumed that the element will at some point call
91 * gst_clock_id_wait() to synchronously wait for a specific time. The first
92 * buffer sent will arrive exactly on time only delayed by the latency. The
93 * second buffer will arrive a little late (7ms) due to simulated jitter in the
97 * <title>Demonstration of how to work with clock notifications and #GstTestClock</title>
98 * <programlisting language="c">
99 * #include <gst/gst.h>
100 * #include <gst/check/gstcheck.h>
101 * #include <gst/check/gsttestclock.h>
103 * GstClockTime latency;
104 * GstElement *element;
107 * GstTestClock *test_clock;
109 * GstClockID pending_id;
110 * GstClockID processed_id;
112 * latency = 42 * GST_MSECOND;
113 * element = create_element (latency, ...);
114 * srcpad = get_source_pad (element);
116 * clock = gst_test_clock_new ();
117 * test_clock = GST_TEST_CLOCK (clock);
118 * gst_element_set_clock (element, clock);
120 * GST_INFO ("Set time, create and push the first buffer\n");
121 * gst_test_clock_set_time (test_clock, 0);
122 * buf = create_test_buffer (gst_clock_get_time (clock), ...);
123 * gst_assert_cmpint (gst_pad_push (srcpad, buf), ==, GST_FLOW_OK);
125 * GST_INFO ("Block until element is waiting for a clock notification\n");
126 * gst_test_clock_wait_for_next_pending_id (test_clock, &pending_id);
127 * GST_INFO ("Advance to the requested time of the clock notification\n");
128 * gst_test_clock_advance_time (test_clock, latency);
129 * GST_INFO ("Release the next blocking wait and make sure it is the one from element\n");
130 * processed_id = gst_test_clock_process_next_clock_id (test_clock);
131 * g_assert (processed_id == pending_id);
132 * g_assert_cmpint (GST_CLOCK_ENTRY_STATUS (processed_id), ==, GST_CLOCK_OK);
133 * gst_clock_id_unref (pending_id);
134 * gst_clock_id_unref (processed_id);
136 * GST_INFO ("Validate that element produced an output buffer and check its timestamp\n");
137 * g_assert_cmpint (get_number_of_output_buffer (...), ==, 1);
138 * buf = get_buffer_pushed_by_element (element, ...);
139 * g_assert_cmpint (GST_BUFFER_TIMESTAMP (buf), ==, latency);
140 * gst_buffer_unref (buf);
141 * GST_INFO ("Check that element does not wait for any clock notification\n");
142 * g_assert (gst_test_clock_peek_next_pending_id (test_clock, NULL) == FALSE);
144 * GST_INFO ("Set time, create and push the second buffer\n");
145 * gst_test_clock_advance_time (test_clock, 10 * GST_SECOND);
146 * buf = create_test_buffer (gst_clock_get_time (clock), ...);
147 * gst_assert_cmpint (gst_pad_push (srcpad, buf), ==, GST_FLOW_OK);
149 * GST_INFO ("Block until element is waiting for a new clock notification\n");
150 * (gst_test_clock_wait_for_next_pending_id (test_clock, &pending_id);
151 * GST_INFO ("Advance past 7ms beyond the requested time of the clock notification\n");
152 * gst_test_clock_advance_time (test_clock, latency + 7 * GST_MSECOND);
153 * GST_INFO ("Release the next blocking wait and make sure it is the one from element\n");
154 * processed_id = gst_test_clock_process_next_clock_id (test_clock);
155 * g_assert (processed_id == pending_id);
156 * g_assert_cmpint (GST_CLOCK_ENTRY_STATUS (processed_id), ==, GST_CLOCK_OK);
157 * gst_clock_id_unref (pending_id);
158 * gst_clock_id_unref (processed_id);
160 * GST_INFO ("Validate that element produced an output buffer and check its timestamp\n");
161 * g_assert_cmpint (get_number_of_output_buffer (...), ==, 1);
162 * buf = get_buffer_pushed_by_element (element, ...);
163 * g_assert_cmpint (GST_BUFFER_TIMESTAMP (buf), ==,
164 * 10 * GST_SECOND + latency + 7 * GST_MSECOND);
165 * gst_buffer_unref (buf);
166 * GST_INFO ("Check that element does not wait for any clock notification\n");
167 * g_assert (gst_test_clock_peek_next_pending_id (test_clock, NULL) == FALSE);
172 * Since #GstTestClock is only supposed to be used in unit tests it calls
173 * g_assert(), g_assert_cmpint() or g_assert_cmpuint() to validate all function
174 * arguments. This will highlight any issues with the unit test code itself.
181 #include "gsttestclock.h"
189 typedef struct _GstClockEntryContext GstClockEntryContext;
191 struct _GstClockEntryContext
193 GstClockEntry *clock_entry;
194 GstClockTimeDiff time_diff;
197 struct _GstTestClockPrivate
199 GstClockTime start_time;
200 GstClockTime internal_time;
201 GList *entry_contexts;
202 GCond entry_added_cond;
203 GCond entry_processed_cond;
206 #define GST_TEST_CLOCK_GET_PRIVATE(obj) ((GST_TEST_CLOCK_CAST (obj))->priv)
208 GST_DEBUG_CATEGORY_STATIC (test_clock_debug);
209 #define GST_CAT_TEST_CLOCK test_clock_debug
213 GST_DEBUG_CATEGORY_INIT (test_clock_debug, "GST_TEST_CLOCK", \
214 GST_DEBUG_BOLD, "Test clocks for unit tests"); \
217 G_DEFINE_TYPE_WITH_CODE (GstTestClock, gst_test_clock,
218 GST_TYPE_CLOCK, _do_init);
220 static GstObjectClass *parent_class = NULL;
222 static void gst_test_clock_constructed (GObject * object);
223 static void gst_test_clock_dispose (GObject * object);
224 static void gst_test_clock_finalize (GObject * object);
225 static void gst_test_clock_get_property (GObject * object, guint property_id,
226 GValue * value, GParamSpec * pspec);
227 static void gst_test_clock_set_property (GObject * object, guint property_id,
228 const GValue * value, GParamSpec * pspec);
230 static GstClockTime gst_test_clock_get_resolution (GstClock * clock);
231 static GstClockTime gst_test_clock_get_internal_time (GstClock * clock);
232 static GstClockReturn gst_test_clock_wait (GstClock * clock,
233 GstClockEntry * entry, GstClockTimeDiff * jitter);
234 static GstClockReturn gst_test_clock_wait_async (GstClock * clock,
235 GstClockEntry * entry);
236 static void gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry);
238 static gboolean gst_test_clock_peek_next_pending_id_unlocked (GstTestClock *
239 test_clock, GstClockID * pending_id);
240 static guint gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock);
242 static void gst_test_clock_add_entry (GstTestClock * test_clock,
243 GstClockEntry * entry, GstClockTimeDiff * jitter);
244 static void gst_test_clock_remove_entry (GstTestClock * test_clock,
245 GstClockEntry * entry);
246 static GstClockEntryContext *gst_test_clock_lookup_entry_context (GstTestClock *
247 test_clock, GstClockEntry * clock_entry);
249 static gint gst_clock_entry_context_compare_func (gconstpointer a,
253 gst_test_clock_class_init (GstTestClockClass * klass)
255 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
256 GstClockClass *gstclock_class = GST_CLOCK_CLASS (klass);
259 parent_class = g_type_class_peek_parent (klass);
261 g_type_class_add_private (klass, sizeof (GstTestClockPrivate));
263 gobject_class->constructed = GST_DEBUG_FUNCPTR (gst_test_clock_constructed);
264 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_test_clock_dispose);
265 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_test_clock_finalize);
266 gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_test_clock_get_property);
267 gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_test_clock_set_property);
269 gstclock_class->get_resolution =
270 GST_DEBUG_FUNCPTR (gst_test_clock_get_resolution);
271 gstclock_class->get_internal_time =
272 GST_DEBUG_FUNCPTR (gst_test_clock_get_internal_time);
273 gstclock_class->wait = GST_DEBUG_FUNCPTR (gst_test_clock_wait);
274 gstclock_class->wait_async = GST_DEBUG_FUNCPTR (gst_test_clock_wait_async);
275 gstclock_class->unschedule = GST_DEBUG_FUNCPTR (gst_test_clock_unschedule);
278 * GstTestClock:start-time:
280 * When a #GstTestClock is constructed it will have a certain start time set.
281 * If the clock was created using gst_test_clock_new_with_start_time() then
282 * this property contains the value of the @start_time argument. If
283 * gst_test_clock_new() was called the clock started at time zero, and thus
284 * this property contains the value 0.
286 pspec = g_param_spec_uint64 ("start-time", "Start Time",
287 "Start Time of the Clock", 0, G_MAXUINT64, 0,
288 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
289 g_object_class_install_property (gobject_class, PROP_START_TIME, pspec);
293 gst_test_clock_init (GstTestClock * test_clock)
295 GstTestClockPrivate *priv;
297 test_clock->priv = G_TYPE_INSTANCE_GET_PRIVATE (test_clock,
298 GST_TYPE_TEST_CLOCK, GstTestClockPrivate);
300 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
302 g_cond_init (&priv->entry_added_cond);
303 g_cond_init (&priv->entry_processed_cond);
305 GST_OBJECT_FLAG_SET (test_clock,
306 GST_CLOCK_FLAG_CAN_DO_SINGLE_SYNC |
307 GST_CLOCK_FLAG_CAN_DO_SINGLE_ASYNC |
308 GST_CLOCK_FLAG_CAN_DO_PERIODIC_SYNC |
309 GST_CLOCK_FLAG_CAN_DO_PERIODIC_ASYNC);
313 gst_test_clock_constructed (GObject * object)
315 GstTestClock *test_clock = GST_TEST_CLOCK (object);
316 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
318 priv->internal_time = priv->start_time;
320 G_OBJECT_CLASS (parent_class)->constructed (object);
324 gst_test_clock_dispose (GObject * object)
326 GstTestClock *test_clock = GST_TEST_CLOCK (object);
327 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
329 GST_OBJECT_LOCK (test_clock);
331 while (priv->entry_contexts != NULL) {
332 GstClockEntryContext *ctx = priv->entry_contexts->data;
333 gst_test_clock_remove_entry (test_clock, ctx->clock_entry);
336 GST_OBJECT_UNLOCK (test_clock);
338 G_OBJECT_CLASS (parent_class)->dispose (object);
342 gst_test_clock_finalize (GObject * object)
344 GstTestClock *test_clock = GST_TEST_CLOCK (object);
345 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
347 g_cond_clear (&priv->entry_added_cond);
348 g_cond_clear (&priv->entry_processed_cond);
350 G_OBJECT_CLASS (parent_class)->finalize (object);
354 gst_test_clock_get_property (GObject * object, guint property_id,
355 GValue * value, GParamSpec * pspec)
357 GstTestClock *test_clock = GST_TEST_CLOCK (object);
358 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
360 switch (property_id) {
361 case PROP_START_TIME:
362 g_value_set_uint64 (value, priv->start_time);
365 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
371 gst_test_clock_set_property (GObject * object, guint property_id,
372 const GValue * value, GParamSpec * pspec)
374 GstTestClock *test_clock = GST_TEST_CLOCK (object);
375 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
377 switch (property_id) {
378 case PROP_START_TIME:
379 priv->start_time = g_value_get_uint64 (value);
380 GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
381 "test clock start time initialized at %" GST_TIME_FORMAT,
382 GST_TIME_ARGS (priv->start_time));
385 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
391 gst_test_clock_get_resolution (GstClock * clock)
398 gst_test_clock_get_internal_time (GstClock * clock)
400 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
401 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
404 GST_OBJECT_LOCK (test_clock);
406 GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
407 "retrieving test clock time %" GST_TIME_FORMAT,
408 GST_TIME_ARGS (priv->internal_time));
409 result = priv->internal_time;
411 GST_OBJECT_UNLOCK (test_clock);
416 static GstClockReturn
417 gst_test_clock_wait (GstClock * clock,
418 GstClockEntry * entry, GstClockTimeDiff * jitter)
420 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
421 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
423 GST_OBJECT_LOCK (test_clock);
425 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
426 "requesting synchronous clock notification at %" GST_TIME_FORMAT,
427 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
429 if (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_UNSCHEDULED)
430 goto was_unscheduled;
432 if (gst_test_clock_lookup_entry_context (test_clock, entry) == NULL)
433 gst_test_clock_add_entry (test_clock, entry, jitter);
435 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_BUSY;
437 while (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_BUSY)
438 g_cond_wait (&priv->entry_processed_cond, GST_OBJECT_GET_LOCK (test_clock));
440 GST_OBJECT_UNLOCK (test_clock);
442 return GST_CLOCK_ENTRY_STATUS (entry);
447 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
448 "entry was unscheduled");
449 GST_OBJECT_UNLOCK (test_clock);
450 return GST_CLOCK_UNSCHEDULED;
454 static GstClockReturn
455 gst_test_clock_wait_async (GstClock * clock, GstClockEntry * entry)
457 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
459 GST_OBJECT_LOCK (test_clock);
461 if (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_UNSCHEDULED)
462 goto was_unscheduled;
464 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
465 "requesting asynchronous clock notification at %" GST_TIME_FORMAT,
466 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
468 gst_test_clock_add_entry (test_clock, entry, NULL);
470 GST_OBJECT_UNLOCK (test_clock);
477 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
478 "entry was unscheduled");
479 GST_OBJECT_UNLOCK (test_clock);
480 return GST_CLOCK_UNSCHEDULED;
485 gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry)
487 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
489 GST_OBJECT_LOCK (test_clock);
491 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
492 "unscheduling requested clock notification at %" GST_TIME_FORMAT,
493 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
495 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_UNSCHEDULED;
496 gst_test_clock_remove_entry (test_clock, entry);
498 GST_OBJECT_UNLOCK (test_clock);
502 gst_test_clock_peek_next_pending_id_unlocked (GstTestClock * test_clock,
503 GstClockID * pending_id)
505 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
506 GList *imminent_clock_id = g_list_first (priv->entry_contexts);
507 gboolean result = FALSE;
509 if (imminent_clock_id != NULL) {
510 GstClockEntryContext *ctx = imminent_clock_id->data;
512 if (pending_id != NULL) {
513 *pending_id = gst_clock_id_ref (ctx->clock_entry);
523 gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock)
525 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
527 return g_list_length (priv->entry_contexts);
531 gst_test_clock_add_entry (GstTestClock * test_clock,
532 GstClockEntry * entry, GstClockTimeDiff * jitter)
534 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
536 GstClockEntryContext *ctx;
538 now = gst_clock_adjust_unlocked (GST_CLOCK (test_clock), priv->internal_time);
541 *jitter = GST_CLOCK_DIFF (GST_CLOCK_ENTRY_TIME (entry), now);
543 ctx = g_slice_new (GstClockEntryContext);
544 ctx->clock_entry = GST_CLOCK_ENTRY (gst_clock_id_ref (entry));
545 ctx->time_diff = GST_CLOCK_DIFF (now, GST_CLOCK_ENTRY_TIME (entry));
547 priv->entry_contexts = g_list_insert_sorted (priv->entry_contexts, ctx,
548 gst_clock_entry_context_compare_func);
550 g_cond_broadcast (&priv->entry_added_cond);
554 gst_test_clock_remove_entry (GstTestClock * test_clock, GstClockEntry * entry)
556 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
557 GstClockEntryContext *ctx;
559 ctx = gst_test_clock_lookup_entry_context (test_clock, entry);
561 gst_clock_id_unref (ctx->clock_entry);
562 priv->entry_contexts = g_list_remove (priv->entry_contexts, ctx);
563 g_slice_free (GstClockEntryContext, ctx);
565 g_cond_broadcast (&priv->entry_processed_cond);
569 static GstClockEntryContext *
570 gst_test_clock_lookup_entry_context (GstTestClock * test_clock,
571 GstClockEntry * clock_entry)
573 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
574 GstClockEntryContext *result = NULL;
577 for (cur = priv->entry_contexts; cur != NULL; cur = cur->next) {
578 GstClockEntryContext *ctx = cur->data;
580 if (ctx->clock_entry == clock_entry) {
590 gst_clock_entry_context_compare_func (gconstpointer a, gconstpointer b)
592 const GstClockEntryContext *ctx_a = a;
593 const GstClockEntryContext *ctx_b = b;
595 return gst_clock_id_compare_func (ctx_a->clock_entry, ctx_b->clock_entry);
599 process_entry_context_unlocked (GstTestClock * test_clock,
600 GstClockEntryContext * ctx)
602 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
603 GstClockEntry *entry = ctx->clock_entry;
605 if (ctx->time_diff >= 0)
606 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_OK;
608 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_EARLY;
610 if (entry->func != NULL) {
611 GST_OBJECT_UNLOCK (test_clock);
612 entry->func (GST_CLOCK (test_clock), priv->internal_time, entry,
614 GST_OBJECT_LOCK (test_clock);
617 gst_test_clock_remove_entry (test_clock, entry);
619 if (GST_CLOCK_ENTRY_TYPE (entry) == GST_CLOCK_ENTRY_PERIODIC) {
620 GST_CLOCK_ENTRY_TIME (entry) += GST_CLOCK_ENTRY_INTERVAL (entry);
622 if (entry->func != NULL)
623 gst_test_clock_add_entry (test_clock, entry, NULL);
628 gst_test_clock_get_pending_id_list_unlocked (GstTestClock * test_clock)
630 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
631 GQueue queue = G_QUEUE_INIT;
634 for (cur = priv->entry_contexts; cur != NULL; cur = cur->next) {
635 GstClockEntryContext *ctx = cur->data;
637 g_queue_push_tail (&queue, gst_clock_id_ref (ctx->clock_entry));
644 * gst_test_clock_new:
646 * Creates a new test clock with its time set to zero.
650 * Returns: (transfer full): a #GstTestClock cast to #GstClock.
655 gst_test_clock_new (void)
657 return gst_test_clock_new_with_start_time (0);
661 * gst_test_clock_new_with_start_time:
662 * @start_time: a #GstClockTime set to the desired start time of the clock.
664 * Creates a new test clock with its time set to the specified time.
668 * Returns: (transfer full): a #GstTestClock cast to #GstClock.
673 gst_test_clock_new_with_start_time (GstClockTime start_time)
675 g_assert_cmpuint (start_time, !=, GST_CLOCK_TIME_NONE);
676 return g_object_new (GST_TYPE_TEST_CLOCK, "start-time", start_time, NULL);
680 * gst_test_clock_set_time:
681 * @test_clock: a #GstTestClock of which to set the time
682 * @new_time: a #GstClockTime later than that returned by gst_clock_get_time()
684 * Sets the time of @test_clock to the time given by @new_time. The time of
685 * @test_clock is monotonically increasing, therefore providing a @new_time
686 * which is earlier or equal to the time of the clock as given by
687 * gst_clock_get_time() is a programming error.
694 gst_test_clock_set_time (GstTestClock * test_clock, GstClockTime new_time)
696 GstTestClockPrivate *priv;
698 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
700 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
702 g_assert_cmpuint (new_time, !=, GST_CLOCK_TIME_NONE);
704 GST_OBJECT_LOCK (test_clock);
706 g_assert_cmpuint (new_time, >=, priv->internal_time);
708 priv->internal_time = new_time;
709 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
710 "clock set to %" GST_TIME_FORMAT, GST_TIME_ARGS (new_time));
712 GST_OBJECT_UNLOCK (test_clock);
716 * gst_test_clock_advance_time:
717 * @test_clock: a #GstTestClock for which to increase the time
718 * @delta: a positive #GstClockTimeDiff to be added to the time of the clock
720 * Advances the time of the @test_clock by the amount given by @delta. The
721 * time of @test_clock is monotonically increasing, therefore providing a
722 * @delta which is negative or zero is a programming error.
729 gst_test_clock_advance_time (GstTestClock * test_clock, GstClockTimeDiff delta)
731 GstTestClockPrivate *priv;
733 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
735 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
737 g_assert_cmpint (delta, >=, 0);
738 g_assert_cmpuint (delta, <, G_MAXUINT64 - delta);
740 GST_OBJECT_LOCK (test_clock);
742 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
743 "advancing clock by %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
744 GST_TIME_ARGS (delta), GST_TIME_ARGS (priv->internal_time + delta));
745 priv->internal_time += delta;
747 GST_OBJECT_UNLOCK (test_clock);
751 * gst_test_clock_peek_id_count:
752 * @test_clock: a #GstTestClock for which to count notifications
754 * Determine the number of pending clock notifications that have been
755 * requested from the @test_clock.
759 * Returns: the number of pending clock notifications.
764 gst_test_clock_peek_id_count (GstTestClock * test_clock)
768 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), 0);
770 GST_OBJECT_LOCK (test_clock);
771 result = gst_test_clock_peek_id_count_unlocked (test_clock);
772 GST_OBJECT_UNLOCK (test_clock);
778 * gst_test_clock_has_id:
779 * @test_clock: a #GstTestClock to ask if it provided the notification
780 * @id: (transfer none): a #GstClockID clock notification
782 * Checks whether @test_clock was requested to provide the clock notification
787 * Returns: %TRUE if the clock has been asked to provide the given clock
788 * notification, %FALSE otherwise.
793 gst_test_clock_has_id (GstTestClock * test_clock, GstClockID id)
797 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), FALSE);
798 g_assert (id != NULL);
800 GST_OBJECT_LOCK (test_clock);
801 result = gst_test_clock_lookup_entry_context (test_clock, id) != NULL;
802 GST_OBJECT_UNLOCK (test_clock);
808 * gst_test_clock_peek_next_pending_id:
809 * @test_clock: a #GstTestClock to check the clock notifications for
810 * @pending_id: (allow-none) (out) (transfer full): a #GstClockID clock
811 * notification to look for
813 * Determines if the @pending_id is the next clock notification scheduled to
814 * be triggered given the current time of the @test_clock.
818 * Return: %TRUE if @pending_id is the next clock notification to be
819 * triggered, %FALSE otherwise.
824 gst_test_clock_peek_next_pending_id (GstTestClock * test_clock,
825 GstClockID * pending_id)
829 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), FALSE);
831 GST_OBJECT_LOCK (test_clock);
832 result = gst_test_clock_peek_next_pending_id_unlocked (test_clock,
834 GST_OBJECT_UNLOCK (test_clock);
840 * gst_test_clock_wait_for_next_pending_id:
841 * @test_clock: #GstTestClock for which to get the pending clock notification
842 * @pending_id: (allow-none) (out) (transfer full): #GstClockID
843 * with information about the pending clock notification
845 * Waits until a clock notification is requested from @test_clock. There is no
846 * timeout for this wait, see the main description of #GstTestClock. A reference
847 * to the pending clock notification is stored in @pending_id.
854 gst_test_clock_wait_for_next_pending_id (GstTestClock * test_clock,
855 GstClockID * pending_id)
857 GstTestClockPrivate *priv;
859 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
861 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
863 GST_OBJECT_LOCK (test_clock);
865 while (priv->entry_contexts == NULL)
866 g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
868 if (!gst_test_clock_peek_next_pending_id_unlocked (test_clock, pending_id))
869 g_assert_not_reached ();
871 GST_OBJECT_UNLOCK (test_clock);
875 * gst_test_clock_wait_for_pending_id_count:
876 * @test_clock: #GstTestClock for which to await having enough pending clock
877 * @count: the number of pending clock notifications to wait for
879 * Blocks until at least @count clock notifications have been requested from
880 * @test_clock. There is no timeout for this wait, see the main description of
885 * Deprecated: use gst_test_clock_wait_for_multiple_pending_ids() instead.
887 #ifndef GST_REMOVE_DEPRECATED
888 #ifdef GST_DISABLE_DEPRECATED
889 void gst_test_clock_wait_for_pending_id_count (GstTestClock * test_clock,
893 gst_test_clock_wait_for_pending_id_count (GstTestClock * test_clock,
896 gst_test_clock_wait_for_multiple_pending_ids (test_clock, count, NULL);
901 * gst_test_clock_process_next_clock_id:
902 * @test_clock: a #GstTestClock for which to retrieve the next pending clock
907 * Returns: (transfer full): a #GstClockID containing the next pending clock
913 gst_test_clock_process_next_clock_id (GstTestClock * test_clock)
915 GstTestClockPrivate *priv;
916 GstClockID result = NULL;
917 GstClockEntryContext *ctx = NULL;
920 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), NULL);
922 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
924 GST_OBJECT_LOCK (test_clock);
926 for (cur = priv->entry_contexts; cur != NULL && result == NULL;
930 if (priv->internal_time >= GST_CLOCK_ENTRY_TIME (ctx->clock_entry))
931 result = gst_clock_id_ref (ctx->clock_entry);
935 process_entry_context_unlocked (test_clock, ctx);
937 GST_OBJECT_UNLOCK (test_clock);
943 * gst_test_clock_get_next_entry_time:
944 * @test_clock: a #GstTestClock to fetch the next clock notification time for
946 * Retrieve the requested time for the next pending clock notification.
950 * Returns: a #GstClockTime set to the time of the next pending clock
951 * notification. If no clock notifications have been requested
952 * %GST_CLOCK_TIME_NONE will be returned.
957 gst_test_clock_get_next_entry_time (GstTestClock * test_clock)
959 GstTestClockPrivate *priv;
960 GstClockTime result = GST_CLOCK_TIME_NONE;
961 GList *imminent_clock_id;
963 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), GST_CLOCK_TIME_NONE);
965 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
967 GST_OBJECT_LOCK (test_clock);
969 /* The list of pending clock notifications is sorted by time,
970 so the most imminent one is the first one in the list. */
971 imminent_clock_id = g_list_first (priv->entry_contexts);
972 if (imminent_clock_id != NULL) {
973 GstClockEntryContext *ctx = imminent_clock_id->data;
974 result = GST_CLOCK_ENTRY_TIME (ctx->clock_entry);
977 GST_OBJECT_UNLOCK (test_clock);
983 * gst_test_clock_wait_for_multiple_pending_ids:
984 * @test_clock: #GstTestClock for which to await having enough pending clock
985 * @count: the number of pending clock notifications to wait for
986 * @pending_list: (out) (element-type Gst.ClockID) (transfer full) (allow-none): Address
987 * of a #GList pointer variable to store the list of pending #GstClockIDs
988 * that expired, or %NULL
990 * Blocks until at least @count clock notifications have been requested from
991 * @test_clock. There is no timeout for this wait, see the main description of
999 gst_test_clock_wait_for_multiple_pending_ids (GstTestClock * test_clock,
1000 guint count, GList ** pending_list)
1002 GstTestClockPrivate *priv;
1004 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
1005 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
1007 GST_OBJECT_LOCK (test_clock);
1009 while (g_list_length (priv->entry_contexts) < count)
1010 g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
1013 *pending_list = gst_test_clock_get_pending_id_list_unlocked (test_clock);
1015 GST_OBJECT_UNLOCK (test_clock);
1019 * gst_test_clock_process_id_list:
1020 * @test_clock: #GstTestClock for which to process the pending IDs
1021 * @pending_list: (element-type Gst.ClockID) (transfer none) (allow-none): List
1022 * of pending #GstClockIDs
1024 * Processes and releases the pending IDs in the list.
1031 gst_test_clock_process_id_list (GstTestClock * test_clock,
1032 const GList * pending_list)
1037 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), 0);
1039 GST_OBJECT_LOCK (test_clock);
1041 for (cur = pending_list; cur != NULL; cur = cur->next) {
1042 GstClockID pending_id = cur->data;
1043 GstClockEntryContext *ctx =
1044 gst_test_clock_lookup_entry_context (test_clock, pending_id);
1046 process_entry_context_unlocked (test_clock, ctx);
1050 GST_OBJECT_UNLOCK (test_clock);
1056 * gst_test_clock_id_list_get_latest_time:
1057 * @pending_list: (element-type Gst.ClockID) (transfer none) (allow-none): List
1058 * of of pending #GstClockIDs
1060 * Finds the latest time inside the list.
1067 gst_test_clock_id_list_get_latest_time (const GList * pending_list)
1070 GstClockTime result = 0;
1072 for (cur = pending_list; cur != NULL; cur = cur->next) {
1073 GstClockID *pending_id = cur->data;
1074 GstClockTime time = gst_clock_id_get_time (pending_id);