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 * @title: GstTestClock
27 * @short_description: Controllable, deterministic clock for GStreamer unit tests
28 * @see_also: #GstSystemClock, #GstClock
30 * GstTestClock is an implementation of #GstClock which has different
31 * behaviour compared to #GstSystemClock. Time for #GstSystemClock advances
32 * according to the system time, while time for #GstTestClock changes only
33 * when gst_test_clock_set_time() or gst_test_clock_advance_time() are
34 * called. #GstTestClock provides unit tests with the possibility to
35 * precisely advance the time in a deterministic manner, independent of the
36 * system time or any other external factors.
38 * ## Advancing the time of a #GstTestClock
40 * |[<!-- language="C" -->
41 * #include <gst/gst.h>
42 * #include <gst/check/gsttestclock.h>
45 * GstTestClock *test_clock;
47 * clock = gst_test_clock_new ();
48 * test_clock = GST_TEST_CLOCK (clock);
49 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
50 * gst_test_clock_advance_time ( test_clock, 1 * GST_SECOND);
51 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
52 * g_usleep (10 * G_USEC_PER_SEC);
53 * GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
54 * gst_test_clock_set_time (test_clock, 42 * GST_SECOND);
55 * 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
96 * ## Demonstration of how to work with clock notifications and #GstTestClock
98 * |[<!-- 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));
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));
171 * Since #GstTestClock is only supposed to be used in unit tests it calls
172 * g_assert(), g_assert_cmpint() or g_assert_cmpuint() to validate all function
173 * arguments. This will highlight any issues with the unit test code itself.
180 #include "gsttestclock.h"
189 typedef struct _GstClockEntryContext GstClockEntryContext;
191 struct _GstClockEntryContext
193 GstClockEntry *clock_entry;
194 GstClockTimeDiff time_diff;
197 struct _GstTestClockPrivate
199 GstClockType clock_type;
200 GstClockTime start_time;
201 GstClockTime internal_time;
202 GList *entry_contexts;
203 GCond entry_added_cond;
204 GCond entry_processed_cond;
207 #define DEFAULT_CLOCK_TYPE GST_CLOCK_TYPE_MONOTONIC
209 #define GST_TEST_CLOCK_GET_PRIVATE(obj) ((GST_TEST_CLOCK_CAST (obj))->priv)
211 GST_DEBUG_CATEGORY_STATIC (test_clock_debug);
212 #define GST_CAT_TEST_CLOCK test_clock_debug
216 GST_DEBUG_CATEGORY_INIT (test_clock_debug, "GST_TEST_CLOCK", \
217 GST_DEBUG_BOLD, "Test clocks for unit tests"); \
220 G_DEFINE_TYPE_WITH_CODE (GstTestClock, gst_test_clock,
221 GST_TYPE_CLOCK, _do_init);
223 static GstObjectClass *parent_class = NULL;
225 static void gst_test_clock_constructed (GObject * object);
226 static void gst_test_clock_dispose (GObject * object);
227 static void gst_test_clock_finalize (GObject * object);
228 static void gst_test_clock_get_property (GObject * object, guint property_id,
229 GValue * value, GParamSpec * pspec);
230 static void gst_test_clock_set_property (GObject * object, guint property_id,
231 const GValue * value, GParamSpec * pspec);
233 static GstClockTime gst_test_clock_get_resolution (GstClock * clock);
234 static GstClockTime gst_test_clock_get_internal_time (GstClock * clock);
235 static GstClockReturn gst_test_clock_wait (GstClock * clock,
236 GstClockEntry * entry, GstClockTimeDiff * jitter);
237 static GstClockReturn gst_test_clock_wait_async (GstClock * clock,
238 GstClockEntry * entry);
239 static void gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry);
241 static gboolean gst_test_clock_peek_next_pending_id_unlocked (GstTestClock *
242 test_clock, GstClockID * pending_id);
243 static guint gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock);
245 static void gst_test_clock_add_entry (GstTestClock * test_clock,
246 GstClockEntry * entry, GstClockTimeDiff * jitter);
247 static void gst_test_clock_remove_entry (GstTestClock * test_clock,
248 GstClockEntry * entry);
249 static GstClockEntryContext *gst_test_clock_lookup_entry_context (GstTestClock *
250 test_clock, GstClockEntry * clock_entry);
252 static gint gst_clock_entry_context_compare_func (gconstpointer a,
256 gst_test_clock_class_init (GstTestClockClass * klass)
258 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
259 GstClockClass *gstclock_class = GST_CLOCK_CLASS (klass);
262 parent_class = g_type_class_peek_parent (klass);
264 g_type_class_add_private (klass, sizeof (GstTestClockPrivate));
266 gobject_class->constructed = GST_DEBUG_FUNCPTR (gst_test_clock_constructed);
267 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_test_clock_dispose);
268 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_test_clock_finalize);
269 gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_test_clock_get_property);
270 gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_test_clock_set_property);
272 gstclock_class->get_resolution =
273 GST_DEBUG_FUNCPTR (gst_test_clock_get_resolution);
274 gstclock_class->get_internal_time =
275 GST_DEBUG_FUNCPTR (gst_test_clock_get_internal_time);
276 gstclock_class->wait = GST_DEBUG_FUNCPTR (gst_test_clock_wait);
277 gstclock_class->wait_async = GST_DEBUG_FUNCPTR (gst_test_clock_wait_async);
278 gstclock_class->unschedule = GST_DEBUG_FUNCPTR (gst_test_clock_unschedule);
281 * GstTestClock:start-time:
283 * When a #GstTestClock is constructed it will have a certain start time set.
284 * If the clock was created using gst_test_clock_new_with_start_time() then
285 * this property contains the value of the @start_time argument. If
286 * gst_test_clock_new() was called the clock started at time zero, and thus
287 * this property contains the value 0.
289 pspec = g_param_spec_uint64 ("start-time", "Start Time",
290 "Start Time of the Clock", 0, G_MAXUINT64, 0,
291 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
292 g_object_class_install_property (gobject_class, PROP_START_TIME, pspec);
294 g_object_class_install_property (gobject_class, PROP_CLOCK_TYPE,
295 g_param_spec_enum ("clock-type", "Clock type",
296 "The kind of clock implementation to be reported by this clock",
297 GST_TYPE_CLOCK_TYPE, DEFAULT_CLOCK_TYPE,
298 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
303 gst_test_clock_init (GstTestClock * test_clock)
305 GstTestClockPrivate *priv;
307 test_clock->priv = G_TYPE_INSTANCE_GET_PRIVATE (test_clock,
308 GST_TYPE_TEST_CLOCK, GstTestClockPrivate);
310 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
312 g_cond_init (&priv->entry_added_cond);
313 g_cond_init (&priv->entry_processed_cond);
314 priv->clock_type = DEFAULT_CLOCK_TYPE;
316 GST_OBJECT_FLAG_SET (test_clock,
317 GST_CLOCK_FLAG_CAN_DO_SINGLE_SYNC |
318 GST_CLOCK_FLAG_CAN_DO_SINGLE_ASYNC |
319 GST_CLOCK_FLAG_CAN_DO_PERIODIC_SYNC |
320 GST_CLOCK_FLAG_CAN_DO_PERIODIC_ASYNC);
324 gst_test_clock_constructed (GObject * object)
326 GstTestClock *test_clock = GST_TEST_CLOCK (object);
327 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
329 priv->internal_time = priv->start_time;
331 G_OBJECT_CLASS (parent_class)->constructed (object);
335 gst_test_clock_dispose (GObject * object)
337 GstTestClock *test_clock = GST_TEST_CLOCK (object);
338 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
340 GST_OBJECT_LOCK (test_clock);
342 while (priv->entry_contexts != NULL) {
343 GstClockEntryContext *ctx = priv->entry_contexts->data;
344 gst_test_clock_remove_entry (test_clock, ctx->clock_entry);
347 GST_OBJECT_UNLOCK (test_clock);
349 G_OBJECT_CLASS (parent_class)->dispose (object);
353 gst_test_clock_finalize (GObject * object)
355 GstTestClock *test_clock = GST_TEST_CLOCK (object);
356 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
358 g_cond_clear (&priv->entry_added_cond);
359 g_cond_clear (&priv->entry_processed_cond);
361 G_OBJECT_CLASS (parent_class)->finalize (object);
365 gst_test_clock_get_property (GObject * object, guint property_id,
366 GValue * value, GParamSpec * pspec)
368 GstTestClock *test_clock = GST_TEST_CLOCK (object);
369 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
371 switch (property_id) {
372 case PROP_START_TIME:
373 g_value_set_uint64 (value, priv->start_time);
375 case PROP_CLOCK_TYPE:
376 g_value_set_enum (value, priv->clock_type);
379 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
385 gst_test_clock_set_property (GObject * object, guint property_id,
386 const GValue * value, GParamSpec * pspec)
388 GstTestClock *test_clock = GST_TEST_CLOCK (object);
389 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
391 switch (property_id) {
392 case PROP_START_TIME:
393 priv->start_time = g_value_get_uint64 (value);
394 GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
395 "test clock start time initialized at %" GST_TIME_FORMAT,
396 GST_TIME_ARGS (priv->start_time));
398 case PROP_CLOCK_TYPE:
399 priv->clock_type = (GstClockType) g_value_get_enum (value);
400 GST_CAT_DEBUG (GST_CAT_TEST_CLOCK, "clock-type set to %d",
404 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
410 gst_test_clock_get_resolution (GstClock * clock)
417 gst_test_clock_get_internal_time (GstClock * clock)
419 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
420 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
423 GST_OBJECT_LOCK (test_clock);
425 GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
426 "retrieving test clock time %" GST_TIME_FORMAT,
427 GST_TIME_ARGS (priv->internal_time));
428 result = priv->internal_time;
430 GST_OBJECT_UNLOCK (test_clock);
435 static GstClockReturn
436 gst_test_clock_wait (GstClock * clock,
437 GstClockEntry * entry, GstClockTimeDiff * jitter)
439 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
440 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
442 GST_OBJECT_LOCK (test_clock);
444 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
445 "requesting synchronous clock notification at %" GST_TIME_FORMAT,
446 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
448 if (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_UNSCHEDULED)
449 goto was_unscheduled;
451 if (gst_test_clock_lookup_entry_context (test_clock, entry) == NULL)
452 gst_test_clock_add_entry (test_clock, entry, jitter);
454 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_BUSY;
456 while (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_BUSY)
457 g_cond_wait (&priv->entry_processed_cond, GST_OBJECT_GET_LOCK (test_clock));
459 GST_OBJECT_UNLOCK (test_clock);
461 return GST_CLOCK_ENTRY_STATUS (entry);
466 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
467 "entry was unscheduled");
468 GST_OBJECT_UNLOCK (test_clock);
469 return GST_CLOCK_UNSCHEDULED;
473 static GstClockReturn
474 gst_test_clock_wait_async (GstClock * clock, GstClockEntry * entry)
476 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
478 GST_OBJECT_LOCK (test_clock);
480 if (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_UNSCHEDULED)
481 goto was_unscheduled;
483 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
484 "requesting asynchronous clock notification at %" GST_TIME_FORMAT,
485 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
487 gst_test_clock_add_entry (test_clock, entry, NULL);
489 GST_OBJECT_UNLOCK (test_clock);
496 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
497 "entry was unscheduled");
498 GST_OBJECT_UNLOCK (test_clock);
499 return GST_CLOCK_UNSCHEDULED;
504 gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry)
506 GstTestClock *test_clock = GST_TEST_CLOCK (clock);
508 GST_OBJECT_LOCK (test_clock);
510 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
511 "unscheduling requested clock notification at %" GST_TIME_FORMAT,
512 GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
514 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_UNSCHEDULED;
515 gst_test_clock_remove_entry (test_clock, entry);
517 GST_OBJECT_UNLOCK (test_clock);
521 gst_test_clock_peek_next_pending_id_unlocked (GstTestClock * test_clock,
522 GstClockID * pending_id)
524 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
525 GList *imminent_clock_id = g_list_first (priv->entry_contexts);
526 gboolean result = FALSE;
528 if (imminent_clock_id != NULL) {
529 GstClockEntryContext *ctx = imminent_clock_id->data;
531 if (pending_id != NULL) {
532 *pending_id = gst_clock_id_ref (ctx->clock_entry);
542 gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock)
544 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
546 return g_list_length (priv->entry_contexts);
550 gst_test_clock_add_entry (GstTestClock * test_clock,
551 GstClockEntry * entry, GstClockTimeDiff * jitter)
553 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
555 GstClockEntryContext *ctx;
557 now = gst_clock_adjust_unlocked (GST_CLOCK (test_clock), priv->internal_time);
560 *jitter = GST_CLOCK_DIFF (GST_CLOCK_ENTRY_TIME (entry), now);
562 ctx = g_slice_new (GstClockEntryContext);
563 ctx->clock_entry = GST_CLOCK_ENTRY (gst_clock_id_ref (entry));
564 ctx->time_diff = GST_CLOCK_DIFF (now, GST_CLOCK_ENTRY_TIME (entry));
566 priv->entry_contexts = g_list_insert_sorted (priv->entry_contexts, ctx,
567 gst_clock_entry_context_compare_func);
569 g_cond_broadcast (&priv->entry_added_cond);
573 gst_test_clock_remove_entry (GstTestClock * test_clock, GstClockEntry * entry)
575 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
576 GstClockEntryContext *ctx;
578 ctx = gst_test_clock_lookup_entry_context (test_clock, entry);
580 gst_clock_id_unref (ctx->clock_entry);
581 priv->entry_contexts = g_list_remove (priv->entry_contexts, ctx);
582 g_slice_free (GstClockEntryContext, ctx);
584 g_cond_broadcast (&priv->entry_processed_cond);
588 static GstClockEntryContext *
589 gst_test_clock_lookup_entry_context (GstTestClock * test_clock,
590 GstClockEntry * clock_entry)
592 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
593 GstClockEntryContext *result = NULL;
596 for (cur = priv->entry_contexts; cur != NULL; cur = cur->next) {
597 GstClockEntryContext *ctx = cur->data;
599 if (ctx->clock_entry == clock_entry) {
609 gst_clock_entry_context_compare_func (gconstpointer a, gconstpointer b)
611 const GstClockEntryContext *ctx_a = a;
612 const GstClockEntryContext *ctx_b = b;
614 return gst_clock_id_compare_func (ctx_a->clock_entry, ctx_b->clock_entry);
618 process_entry_context_unlocked (GstTestClock * test_clock,
619 GstClockEntryContext * ctx)
621 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
622 GstClockEntry *entry = ctx->clock_entry;
624 if (ctx->time_diff >= 0)
625 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_OK;
627 GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_EARLY;
629 if (entry->func != NULL) {
630 GST_OBJECT_UNLOCK (test_clock);
631 entry->func (GST_CLOCK (test_clock), priv->internal_time, entry,
633 GST_OBJECT_LOCK (test_clock);
636 gst_test_clock_remove_entry (test_clock, entry);
638 if (GST_CLOCK_ENTRY_TYPE (entry) == GST_CLOCK_ENTRY_PERIODIC) {
639 GST_CLOCK_ENTRY_TIME (entry) += GST_CLOCK_ENTRY_INTERVAL (entry);
641 if (entry->func != NULL)
642 gst_test_clock_add_entry (test_clock, entry, NULL);
647 gst_test_clock_get_pending_id_list_unlocked (GstTestClock * test_clock)
649 GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
650 GQueue queue = G_QUEUE_INIT;
653 for (cur = priv->entry_contexts; cur != NULL; cur = cur->next) {
654 GstClockEntryContext *ctx = cur->data;
656 g_queue_push_tail (&queue, gst_clock_id_ref (ctx->clock_entry));
663 * gst_test_clock_new:
665 * Creates a new test clock with its time set to zero.
669 * Returns: (transfer full): a #GstTestClock cast to #GstClock.
674 gst_test_clock_new (void)
676 return gst_test_clock_new_with_start_time (0);
680 * gst_test_clock_new_with_start_time:
681 * @start_time: a #GstClockTime set to the desired start time of the clock.
683 * Creates a new test clock with its time set to the specified time.
687 * Returns: (transfer full): a #GstTestClock cast to #GstClock.
692 gst_test_clock_new_with_start_time (GstClockTime start_time)
694 g_assert_cmpuint (start_time, !=, GST_CLOCK_TIME_NONE);
695 return g_object_new (GST_TYPE_TEST_CLOCK, "start-time", start_time, NULL);
699 * gst_test_clock_set_time:
700 * @test_clock: a #GstTestClock of which to set the time
701 * @new_time: a #GstClockTime later than that returned by gst_clock_get_time()
703 * Sets the time of @test_clock to the time given by @new_time. The time of
704 * @test_clock is monotonically increasing, therefore providing a @new_time
705 * which is earlier or equal to the time of the clock as given by
706 * gst_clock_get_time() is a programming error.
713 gst_test_clock_set_time (GstTestClock * test_clock, GstClockTime new_time)
715 GstTestClockPrivate *priv;
717 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
719 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
721 g_assert_cmpuint (new_time, !=, GST_CLOCK_TIME_NONE);
723 GST_OBJECT_LOCK (test_clock);
725 g_assert_cmpuint (new_time, >=, priv->internal_time);
727 priv->internal_time = new_time;
728 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
729 "clock set to %" GST_TIME_FORMAT, GST_TIME_ARGS (new_time));
731 GST_OBJECT_UNLOCK (test_clock);
735 * gst_test_clock_advance_time:
736 * @test_clock: a #GstTestClock for which to increase the time
737 * @delta: a positive #GstClockTimeDiff to be added to the time of the clock
739 * Advances the time of the @test_clock by the amount given by @delta. The
740 * time of @test_clock is monotonically increasing, therefore providing a
741 * @delta which is negative or zero is a programming error.
748 gst_test_clock_advance_time (GstTestClock * test_clock, GstClockTimeDiff delta)
750 GstTestClockPrivate *priv;
752 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
754 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
756 g_assert_cmpint (delta, >=, 0);
757 g_assert_cmpuint (delta, <, G_MAXUINT64 - delta);
759 GST_OBJECT_LOCK (test_clock);
761 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
762 "advancing clock by %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
763 GST_TIME_ARGS (delta), GST_TIME_ARGS (priv->internal_time + delta));
764 priv->internal_time += delta;
766 GST_OBJECT_UNLOCK (test_clock);
770 * gst_test_clock_peek_id_count:
771 * @test_clock: a #GstTestClock for which to count notifications
773 * Determine the number of pending clock notifications that have been
774 * requested from the @test_clock.
778 * Returns: the number of pending clock notifications.
783 gst_test_clock_peek_id_count (GstTestClock * test_clock)
787 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), 0);
789 GST_OBJECT_LOCK (test_clock);
790 result = gst_test_clock_peek_id_count_unlocked (test_clock);
791 GST_OBJECT_UNLOCK (test_clock);
797 * gst_test_clock_has_id:
798 * @test_clock: a #GstTestClock to ask if it provided the notification
799 * @id: (transfer none): a #GstClockID clock notification
801 * Checks whether @test_clock was requested to provide the clock notification
806 * Returns: %TRUE if the clock has been asked to provide the given clock
807 * notification, %FALSE otherwise.
812 gst_test_clock_has_id (GstTestClock * test_clock, GstClockID id)
816 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), FALSE);
817 g_assert (id != NULL);
819 GST_OBJECT_LOCK (test_clock);
820 result = gst_test_clock_lookup_entry_context (test_clock, id) != NULL;
821 GST_OBJECT_UNLOCK (test_clock);
827 * gst_test_clock_peek_next_pending_id:
828 * @test_clock: a #GstTestClock to check the clock notifications for
829 * @pending_id: (allow-none) (out) (transfer full): a #GstClockID clock
830 * notification to look for
832 * Determines if the @pending_id is the next clock notification scheduled to
833 * be triggered given the current time of the @test_clock.
837 * Return: %TRUE if @pending_id is the next clock notification to be
838 * triggered, %FALSE otherwise.
843 gst_test_clock_peek_next_pending_id (GstTestClock * test_clock,
844 GstClockID * pending_id)
848 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), FALSE);
850 GST_OBJECT_LOCK (test_clock);
851 result = gst_test_clock_peek_next_pending_id_unlocked (test_clock,
853 GST_OBJECT_UNLOCK (test_clock);
859 * gst_test_clock_wait_for_next_pending_id:
860 * @test_clock: #GstTestClock for which to get the pending clock notification
861 * @pending_id: (allow-none) (out) (transfer full): #GstClockID
862 * with information about the pending clock notification
864 * Waits until a clock notification is requested from @test_clock. There is no
865 * timeout for this wait, see the main description of #GstTestClock. A reference
866 * to the pending clock notification is stored in @pending_id.
873 gst_test_clock_wait_for_next_pending_id (GstTestClock * test_clock,
874 GstClockID * pending_id)
876 GstTestClockPrivate *priv;
878 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
880 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
882 GST_OBJECT_LOCK (test_clock);
884 while (priv->entry_contexts == NULL)
885 g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
887 if (!gst_test_clock_peek_next_pending_id_unlocked (test_clock, pending_id))
888 g_assert_not_reached ();
890 GST_OBJECT_UNLOCK (test_clock);
894 * gst_test_clock_wait_for_pending_id_count:
895 * @test_clock: #GstTestClock for which to await having enough pending clock
896 * @count: the number of pending clock notifications to wait for
898 * Blocks until at least @count clock notifications have been requested from
899 * @test_clock. There is no timeout for this wait, see the main description of
904 * Deprecated: use gst_test_clock_wait_for_multiple_pending_ids() instead.
906 #ifndef GST_REMOVE_DEPRECATED
907 #ifdef GST_DISABLE_DEPRECATED
908 void gst_test_clock_wait_for_pending_id_count (GstTestClock * test_clock,
912 gst_test_clock_wait_for_pending_id_count (GstTestClock * test_clock,
915 gst_test_clock_wait_for_multiple_pending_ids (test_clock, count, NULL);
920 * gst_test_clock_process_next_clock_id:
921 * @test_clock: a #GstTestClock for which to retrieve the next pending clock
926 * Returns: (transfer full): a #GstClockID containing the next pending clock
932 gst_test_clock_process_next_clock_id (GstTestClock * test_clock)
934 GstTestClockPrivate *priv;
935 GstClockID result = NULL;
936 GstClockEntryContext *ctx = NULL;
939 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), NULL);
941 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
943 GST_OBJECT_LOCK (test_clock);
945 for (cur = priv->entry_contexts; cur != NULL && result == NULL;
949 if (priv->internal_time >= GST_CLOCK_ENTRY_TIME (ctx->clock_entry))
950 result = gst_clock_id_ref (ctx->clock_entry);
954 process_entry_context_unlocked (test_clock, ctx);
956 GST_OBJECT_UNLOCK (test_clock);
962 * gst_test_clock_get_next_entry_time:
963 * @test_clock: a #GstTestClock to fetch the next clock notification time for
965 * Retrieve the requested time for the next pending clock notification.
969 * Returns: a #GstClockTime set to the time of the next pending clock
970 * notification. If no clock notifications have been requested
971 * %GST_CLOCK_TIME_NONE will be returned.
976 gst_test_clock_get_next_entry_time (GstTestClock * test_clock)
978 GstTestClockPrivate *priv;
979 GstClockTime result = GST_CLOCK_TIME_NONE;
980 GList *imminent_clock_id;
982 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), GST_CLOCK_TIME_NONE);
984 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
986 GST_OBJECT_LOCK (test_clock);
988 /* The list of pending clock notifications is sorted by time,
989 so the most imminent one is the first one in the list. */
990 imminent_clock_id = g_list_first (priv->entry_contexts);
991 if (imminent_clock_id != NULL) {
992 GstClockEntryContext *ctx = imminent_clock_id->data;
993 result = GST_CLOCK_ENTRY_TIME (ctx->clock_entry);
996 GST_OBJECT_UNLOCK (test_clock);
1002 * gst_test_clock_wait_for_multiple_pending_ids:
1003 * @test_clock: #GstTestClock for which to await having enough pending clock
1004 * @count: the number of pending clock notifications to wait for
1005 * @pending_list: (out) (element-type Gst.ClockID) (transfer full) (allow-none): Address
1006 * of a #GList pointer variable to store the list of pending #GstClockIDs
1007 * that expired, or %NULL
1009 * Blocks until at least @count clock notifications have been requested from
1010 * @test_clock. There is no timeout for this wait, see the main description of
1018 gst_test_clock_wait_for_multiple_pending_ids (GstTestClock * test_clock,
1019 guint count, GList ** pending_list)
1021 GstTestClockPrivate *priv;
1023 g_return_if_fail (GST_IS_TEST_CLOCK (test_clock));
1024 priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
1026 GST_OBJECT_LOCK (test_clock);
1028 while (g_list_length (priv->entry_contexts) < count)
1029 g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
1032 *pending_list = gst_test_clock_get_pending_id_list_unlocked (test_clock);
1034 GST_OBJECT_UNLOCK (test_clock);
1038 * gst_test_clock_process_id_list:
1039 * @test_clock: #GstTestClock for which to process the pending IDs
1040 * @pending_list: (element-type Gst.ClockID) (transfer none) (allow-none): List
1041 * of pending #GstClockIDs
1043 * Processes and releases the pending IDs in the list.
1050 gst_test_clock_process_id_list (GstTestClock * test_clock,
1051 const GList * pending_list)
1056 g_return_val_if_fail (GST_IS_TEST_CLOCK (test_clock), 0);
1058 GST_OBJECT_LOCK (test_clock);
1060 for (cur = pending_list; cur != NULL; cur = cur->next) {
1061 GstClockID pending_id = cur->data;
1062 GstClockEntryContext *ctx =
1063 gst_test_clock_lookup_entry_context (test_clock, pending_id);
1065 process_entry_context_unlocked (test_clock, ctx);
1069 GST_OBJECT_UNLOCK (test_clock);
1075 * gst_test_clock_id_list_get_latest_time:
1076 * @pending_list: (element-type Gst.ClockID) (transfer none) (allow-none): List
1077 * of of pending #GstClockIDs
1079 * Finds the latest time inside the list.
1086 gst_test_clock_id_list_get_latest_time (const GList * pending_list)
1089 GstClockTime result = 0;
1091 for (cur = pending_list; cur != NULL; cur = cur->next) {
1092 GstClockID *pending_id = cur->data;
1093 GstClockTime time = gst_clock_id_get_time (pending_id);
1102 * gst_test_clock_crank:
1103 * @test_clock: #GstTestClock to crank
1105 * A "crank" consists of three steps:
1106 * 1: Wait for a #GstClockID to be registered with the #GstTestClock.
1107 * 2: Advance the #GstTestClock to the time the #GstClockID is waiting for.
1108 * 3: Release the #GstClockID wait.
1109 * A "crank" can be though of as the notion of
1110 * manually driving the clock forward to its next logical step.
1112 * Return: %TRUE if the crank was successful, %FALSE otherwise.
1119 gst_test_clock_crank (GstTestClock * test_clock)
1121 GstClockID res, pending;
1124 gst_test_clock_wait_for_next_pending_id (test_clock, &pending);
1125 gst_test_clock_set_time (test_clock, gst_clock_id_get_time (pending));
1126 res = gst_test_clock_process_next_clock_id (test_clock);
1127 if (G_LIKELY (res == pending)) {
1128 GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
1129 "cranked to time %" GST_TIME_FORMAT,
1130 GST_TIME_ARGS (gst_clock_get_time (GST_CLOCK (test_clock))));
1133 GST_CAT_WARNING_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
1134 "testclock next id != pending (%p != %p)", res, pending);
1138 if (G_LIKELY (res != NULL))
1139 gst_clock_id_unref (res);
1141 gst_clock_id_unref (pending);