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921 lines
29 KiB
C
921 lines
29 KiB
C
/* GstTestClock - A deterministic clock for GStreamer unit tests
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*
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* Copyright (C) 2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
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* Copyright (C) 2012 Sebastian Rasmussen <sebastian.rasmussen@axis.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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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:gsttestclock
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* @short_description: Controllable, deterministic clock for GStreamer unit tests
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* @see_also: #GstSystemClock, #GstClock
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*
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* GstTestClock is an implementation of #GstClock which has different
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* behaviour compared to #GstSystemClock. Time for #GstSystemClock advances
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* according to the system time, while time for #GstTestClock changes only
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* when gst_test_clock_set_time() or gst_test_clock_advance_time() are
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* called. #GstTestClock provides unit tests with the possibility to
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* precisely advance the time in a deterministic manner, independent of the
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* system time or any other external factors.
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*
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* <example>
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* <title>Advancing the time of a #GstTestClock</title>
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* <programlisting language="c">
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* #include <gst/gst.h>
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* #include <gst/check/gsttestclock.h>
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*
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* GstClock *clock;
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* GstTestClock *test_clock;
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*
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* clock = gst_test_clock_new ();
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* test_clock = GST_TEST_CLOCK (clock);
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* GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
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* gst_test_clock_advance_time ( test_clock, 1 * GST_SECOND);
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* GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
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* g_usleep (10 * G_USEC_PER_SEC);
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* GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
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* gst_test_clock_set_time (test_clock, 42 * GST_SECOND);
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* GST_INFO ("Time: %" GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
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* ...
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* </programlisting>
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* </example>
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*
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* #GstClock allows for setting up single shot or periodic clock notifications
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* as well as waiting for these notifications synchronously (using
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* gst_clock_id_wait()) or asynchronously (using gst_clock_id_wait_async() or
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* gst_clock_id_wait_async_full()). This is used by many GStreamer elements,
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* among them #GstBaseSrc and #GstBaseSink.
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*
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* #GstTestClock keeps track of these clock notifications. By calling
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* gst_test_clock_wait_for_next_pending_id() or
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* gst_test_clock_wait_for_pending_id_count() a unit tests may wait for the
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* next one or several clock notifications to be requested. Additionally unit
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* tests may release blocked waits in a controlled fashion by calling
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* gst_test_clock_process_next_clock_id(). This way a unit test can control the
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* inaccuracy (jitter) of clock notifications, since the test can decide to
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* release blocked waits when the clock time has advanced exactly to, or past,
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* the requested clock notification time.
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*
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* There are also interfaces for determining if a notification belongs to a
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* #GstTestClock or not, as well as getting the number of requested clock
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* notifications so far.
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*
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* N.B.: When a unit test waits for a certain amount of clock notifications to
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* be requested in gst_test_clock_wait_for_next_pending_id() or
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* gst_test_clock_wait_for_pending_id_count() then these functions may block
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* for a long time. If they block forever then the expected clock notifications
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* were never requested from #GstTestClock, and so the assumptions in the code
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* of the unit test are wrong. The unit test case runner in #GstCheck is
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* expected to catch these cases either by the default test case timeout or the
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* one set for the unit test by calling tcase_set_timeout().
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*
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* The sample code below assumes that the element under test will delay a
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* buffer pushed on the source pad by some latency until it arrives on the sink
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* pad. Moreover it is assumed that the element will at some point call
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* gst_clock_id_wait() to synchronously wait for a specific time. The first
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* buffer sent will arrive exactly on time only delayed by the latency. The
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* second buffer will arrive a little late (7ms) due to simulated jitter in the
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* clock notification.
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*
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* <example>
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* <title>Demonstration of how to work with clock notifications and #GstTestClock</title>
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* <programlisting language="c">
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* #include <gst/gst.h>
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* #include <gst/check/gstcheck.h>
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* #include <gst/check/gsttestclock.h>
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*
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* GstClockTime latency;
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* GstElement *element;
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* GstPad *srcpad;
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* GstClock *clock;
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* GstTestClock *test_clock;
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* GstBuffer buf;
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* GstClockID pending_id;
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* GstClockID processed_id;
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*
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* latency = 42 * GST_MSECOND;
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* element = create_element (latency, ...);
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* srcpad = get_source_pad (element);
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*
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* clock = gst_test_clock_new ();
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* test_clock = GST_TEST_CLOCK (clock);
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* gst_element_set_clock (element, clock);
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*
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* GST_INFO ("Set time, create and push the first buffer\n");
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* gst_test_clock_set_time (test_clock, 0);
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* buf = create_test_buffer (gst_clock_get_time (clock), ...);
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* gst_assert_cmpint (gst_pad_push (srcpad, buf), ==, GST_FLOW_OK);
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*
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* GST_INFO ("Block until element is waiting for a clock notification\n");
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* gst_test_clock_wait_for_next_pending_id (test_clock, &pending_id);
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* GST_INFO ("Advance to the requested time of the clock notification\n");
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* gst_test_clock_advance_time (test_clock, latency);
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* GST_INFO ("Release the next blocking wait and make sure it is the one from element\n");
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* processed_id = gst_test_clock_process_next_clock_id (test_clock);
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* g_assert (processed_id == pending_id);
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* g_assert_cmpint (GST_CLOCK_ENTRY_STATUS (processed_id), ==, GST_CLOCK_OK);
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* gst_clock_id_unref (pending_id);
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* gst_clock_id_unref (processed_id);
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*
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* GST_INFO ("Validate that element produced an output buffer and check its timestamp\n");
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* g_assert_cmpint (get_number_of_output_buffer (...), ==, 1);
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* buf = get_buffer_pushed_by_element (element, ...);
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* g_assert_cmpint (GST_BUFFER_TIMESTAMP (buf), ==, latency);
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* gst_buffer_unref (buf);
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* GST_INFO ("Check that element does not wait for any clock notification\n");
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* g_assert (gst_test_clock_peek_next_pending_id (test_clock, NULL) == FALSE);
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*
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* GST_INFO ("Set time, create and push the second buffer\n");
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* gst_test_clock_advance_time (test_clock, 10 * GST_SECOND);
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* buf = create_test_buffer (gst_clock_get_time (clock), ...);
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* gst_assert_cmpint (gst_pad_push (srcpad, buf), ==, GST_FLOW_OK);
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*
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* GST_INFO ("Block until element is waiting for a new clock notification\n");
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* (gst_test_clock_wait_for_next_pending_id (test_clock, &pending_id);
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* GST_INFO ("Advance past 7ms beyond the requested time of the clock notification\n");
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* gst_test_clock_advance_time (test_clock, latency + 7 * GST_MSECOND);
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* GST_INFO ("Release the next blocking wait and make sure it is the one from element\n");
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* processed_id = gst_test_clock_process_next_clock_id (test_clock);
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* g_assert (processed_id == pending_id);
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* g_assert_cmpint (GST_CLOCK_ENTRY_STATUS (processed_id), ==, GST_CLOCK_OK);
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* gst_clock_id_unref (pending_id);
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* gst_clock_id_unref (processed_id);
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*
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* GST_INFO ("Validate that element produced an output buffer and check its timestamp\n");
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* g_assert_cmpint (get_number_of_output_buffer (...), ==, 1);
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* buf = get_buffer_pushed_by_element (element, ...);
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* g_assert_cmpint (GST_BUFFER_TIMESTAMP (buf), ==,
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* 10 * GST_SECOND + latency + 7 * GST_MSECOND);
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* gst_buffer_unref (buf);
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* GST_INFO ("Check that element does not wait for any clock notification\n");
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* g_assert (gst_test_clock_peek_next_pending_id (test_clock, NULL) == FALSE);
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* ...
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* </programlisting>
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* </example>
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*
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* Since #GstTestClock is only supposed to be used in unit tests it calls
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* g_assert(), g_assert_cmpint() or g_assert_cmpuint() to validate all function
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* arguments. This will highlight any issues with the unit test code itself.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "gsttestclock.h"
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enum
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{
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PROP_0,
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PROP_START_TIME
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};
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typedef struct _GstClockEntryContext GstClockEntryContext;
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struct _GstClockEntryContext
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{
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GstClockEntry *clock_entry;
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GstClockTimeDiff time_diff;
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};
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struct _GstTestClockPrivate
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{
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GstClockTime start_time;
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GstClockTime internal_time;
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GList *entry_contexts;
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GCond entry_added_cond;
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GCond entry_processed_cond;
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};
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#define GST_TEST_CLOCK_GET_PRIVATE(obj) ((GST_TEST_CLOCK_CAST (obj))->priv)
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GST_DEBUG_CATEGORY_STATIC (test_clock_debug);
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#define GST_CAT_TEST_CLOCK test_clock_debug
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#define _do_init \
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G_STMT_START { \
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GST_DEBUG_CATEGORY_INIT (test_clock_debug, "GST_TEST_CLOCK", \
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GST_DEBUG_BOLD, "Test clocks for unit tests"); \
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} G_STMT_END
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G_DEFINE_TYPE_WITH_CODE (GstTestClock, gst_test_clock,
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GST_TYPE_CLOCK, _do_init);
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static GstObjectClass *parent_class = NULL;
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static void gst_test_clock_constructed (GObject * object);
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static void gst_test_clock_dispose (GObject * object);
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static void gst_test_clock_finalize (GObject * object);
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static void gst_test_clock_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec);
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static void gst_test_clock_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec);
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static GstClockTime gst_test_clock_get_resolution (GstClock * clock);
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static GstClockTime gst_test_clock_get_internal_time (GstClock * clock);
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static GstClockReturn gst_test_clock_wait (GstClock * clock,
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GstClockEntry * entry, GstClockTimeDiff * jitter);
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static GstClockReturn gst_test_clock_wait_async (GstClock * clock,
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GstClockEntry * entry);
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static void gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry);
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static gboolean gst_test_clock_peek_next_pending_id_unlocked (GstTestClock *
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test_clock, GstClockID * pending_id);
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static guint gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock);
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static void gst_test_clock_add_entry (GstTestClock * test_clock,
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GstClockEntry * entry, GstClockTimeDiff * jitter);
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static void gst_test_clock_remove_entry (GstTestClock * test_clock,
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GstClockEntry * entry);
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static GstClockEntryContext *gst_test_clock_lookup_entry_context (GstTestClock *
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test_clock, GstClockEntry * clock_entry);
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static gint gst_clock_entry_context_compare_func (gconstpointer a,
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gconstpointer b);
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static void
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gst_test_clock_class_init (GstTestClockClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstClockClass *gstclock_class = GST_CLOCK_CLASS (klass);
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GParamSpec *pspec;
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parent_class = g_type_class_peek_parent (klass);
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g_type_class_add_private (klass, sizeof (GstTestClockPrivate));
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gobject_class->constructed = GST_DEBUG_FUNCPTR (gst_test_clock_constructed);
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gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_test_clock_dispose);
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_test_clock_finalize);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_test_clock_get_property);
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_test_clock_set_property);
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gstclock_class->get_resolution =
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GST_DEBUG_FUNCPTR (gst_test_clock_get_resolution);
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gstclock_class->get_internal_time =
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GST_DEBUG_FUNCPTR (gst_test_clock_get_internal_time);
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gstclock_class->wait = GST_DEBUG_FUNCPTR (gst_test_clock_wait);
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gstclock_class->wait_async = GST_DEBUG_FUNCPTR (gst_test_clock_wait_async);
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gstclock_class->unschedule = GST_DEBUG_FUNCPTR (gst_test_clock_unschedule);
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/**
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* GstTestClock:start-time
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*
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* When a #GstTestClock is constructed it will have a certain start time set.
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* If the clock was created using gst_test_clock_new_with_start_time() then
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* this property contains the value of the @start_time argument. If
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* gst_test_clock_new() was called the clock started at time zero, and thus
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* this property contains the value 0.
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*/
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pspec = g_param_spec_uint64 ("start-time", "Start Time",
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"Start Time of the Clock", 0, G_MAXUINT64, 0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
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g_object_class_install_property (gobject_class, PROP_START_TIME, pspec);
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}
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static void
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gst_test_clock_init (GstTestClock * test_clock)
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{
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GstTestClockPrivate *priv;
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test_clock->priv = G_TYPE_INSTANCE_GET_PRIVATE (test_clock,
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GST_TYPE_TEST_CLOCK, GstTestClockPrivate);
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priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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g_cond_init (&priv->entry_added_cond);
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g_cond_init (&priv->entry_processed_cond);
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GST_OBJECT_FLAG_SET (test_clock,
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GST_CLOCK_FLAG_CAN_DO_SINGLE_SYNC |
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GST_CLOCK_FLAG_CAN_DO_SINGLE_ASYNC |
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GST_CLOCK_FLAG_CAN_DO_PERIODIC_SYNC |
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GST_CLOCK_FLAG_CAN_DO_PERIODIC_ASYNC);
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}
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static void
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gst_test_clock_constructed (GObject * object)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (object);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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priv->internal_time = priv->start_time;
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G_OBJECT_CLASS (parent_class)->constructed (object);
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}
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static void
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gst_test_clock_dispose (GObject * object)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (object);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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GST_OBJECT_LOCK (test_clock);
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while (priv->entry_contexts != NULL) {
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GstClockEntryContext *ctx = priv->entry_contexts->data;
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gst_test_clock_remove_entry (test_clock, ctx->clock_entry);
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}
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GST_OBJECT_UNLOCK (test_clock);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gst_test_clock_finalize (GObject * object)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (object);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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g_cond_clear (&priv->entry_added_cond);
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g_cond_clear (&priv->entry_processed_cond);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_test_clock_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (object);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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switch (property_id) {
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case PROP_START_TIME:
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g_value_set_uint64 (value, priv->start_time);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gst_test_clock_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (object);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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switch (property_id) {
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case PROP_START_TIME:
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priv->start_time = g_value_get_uint64 (value);
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GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
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"test clock start time initialized at %" GST_TIME_FORMAT,
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GST_TIME_ARGS (priv->start_time));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static GstClockTime
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gst_test_clock_get_resolution (GstClock * clock)
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{
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return 1;
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}
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static GstClockTime
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gst_test_clock_get_internal_time (GstClock * clock)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (clock);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
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GstClockTime result;
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GST_OBJECT_LOCK (test_clock);
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GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
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"retrieving test clock time %" GST_TIME_FORMAT,
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GST_TIME_ARGS (priv->internal_time));
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result = priv->internal_time;
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GST_OBJECT_UNLOCK (test_clock);
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return result;
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}
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static GstClockReturn
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gst_test_clock_wait (GstClock * clock,
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GstClockEntry * entry, GstClockTimeDiff * jitter)
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{
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GstTestClock *test_clock = GST_TEST_CLOCK (clock);
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GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
|
|
"requesting synchronous clock notification at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
|
|
|
|
if (gst_test_clock_lookup_entry_context (test_clock, entry) == NULL)
|
|
gst_test_clock_add_entry (test_clock, entry, jitter);
|
|
|
|
GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_BUSY;
|
|
|
|
while (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_BUSY)
|
|
g_cond_wait (&priv->entry_processed_cond, GST_OBJECT_GET_LOCK (test_clock));
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return GST_CLOCK_ENTRY_STATUS (entry);
|
|
}
|
|
|
|
static GstClockReturn
|
|
gst_test_clock_wait_async (GstClock * clock, GstClockEntry * entry)
|
|
{
|
|
GstTestClock *test_clock = GST_TEST_CLOCK (clock);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
|
|
"requesting asynchronous clock notification at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
|
|
|
|
gst_test_clock_add_entry (test_clock, entry, NULL);
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return GST_CLOCK_OK;
|
|
}
|
|
|
|
static void
|
|
gst_test_clock_unschedule (GstClock * clock, GstClockEntry * entry)
|
|
{
|
|
GstTestClock *test_clock = GST_TEST_CLOCK (clock);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
|
|
"unscheduling requested clock notification at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
|
|
|
|
GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_UNSCHEDULED;
|
|
gst_test_clock_remove_entry (test_clock, entry);
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
}
|
|
|
|
static gboolean
|
|
gst_test_clock_peek_next_pending_id_unlocked (GstTestClock * test_clock,
|
|
GstClockID * pending_id)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GList *imminent_clock_id = g_list_first (priv->entry_contexts);
|
|
gboolean result = FALSE;
|
|
|
|
if (imminent_clock_id != NULL) {
|
|
GstClockEntryContext *ctx = imminent_clock_id->data;
|
|
|
|
if (pending_id != NULL) {
|
|
*pending_id = gst_clock_id_ref (ctx->clock_entry);
|
|
}
|
|
|
|
result = TRUE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static guint
|
|
gst_test_clock_peek_id_count_unlocked (GstTestClock * test_clock)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
return g_list_length (priv->entry_contexts);
|
|
}
|
|
|
|
static void
|
|
gst_test_clock_add_entry (GstTestClock * test_clock,
|
|
GstClockEntry * entry, GstClockTimeDiff * jitter)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GstClockTime now;
|
|
GstClockEntryContext *ctx;
|
|
|
|
now = gst_clock_adjust_unlocked (GST_CLOCK (test_clock), priv->internal_time);
|
|
|
|
if (jitter != NULL)
|
|
*jitter = GST_CLOCK_DIFF (GST_CLOCK_ENTRY_TIME (entry), now);
|
|
|
|
ctx = g_slice_new (GstClockEntryContext);
|
|
ctx->clock_entry = GST_CLOCK_ENTRY (gst_clock_id_ref (entry));
|
|
ctx->time_diff = GST_CLOCK_DIFF (now, GST_CLOCK_ENTRY_TIME (entry));
|
|
|
|
priv->entry_contexts = g_list_insert_sorted (priv->entry_contexts, ctx,
|
|
gst_clock_entry_context_compare_func);
|
|
|
|
g_cond_broadcast (&priv->entry_added_cond);
|
|
}
|
|
|
|
static void
|
|
gst_test_clock_remove_entry (GstTestClock * test_clock, GstClockEntry * entry)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GstClockEntryContext *ctx;
|
|
|
|
ctx = gst_test_clock_lookup_entry_context (test_clock, entry);
|
|
if (ctx != NULL) {
|
|
gst_clock_id_unref (ctx->clock_entry);
|
|
priv->entry_contexts = g_list_remove (priv->entry_contexts, ctx);
|
|
g_slice_free (GstClockEntryContext, ctx);
|
|
|
|
g_cond_broadcast (&priv->entry_processed_cond);
|
|
}
|
|
}
|
|
|
|
static GstClockEntryContext *
|
|
gst_test_clock_lookup_entry_context (GstTestClock * test_clock,
|
|
GstClockEntry * clock_entry)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GstClockEntryContext *result = NULL;
|
|
GList *cur;
|
|
|
|
for (cur = priv->entry_contexts; cur != NULL; cur = cur->next) {
|
|
GstClockEntryContext *ctx = cur->data;
|
|
|
|
if (ctx->clock_entry == clock_entry) {
|
|
result = ctx;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static gint
|
|
gst_clock_entry_context_compare_func (gconstpointer a, gconstpointer b)
|
|
{
|
|
const GstClockEntryContext *ctx_a = a;
|
|
const GstClockEntryContext *ctx_b = b;
|
|
|
|
return gst_clock_id_compare_func (ctx_a->clock_entry, ctx_b->clock_entry);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_new:
|
|
*
|
|
* Creates a new test clock with its time set to zero.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: (transfer full): a #GstTestClock cast to #GstClock.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
GstClock *
|
|
gst_test_clock_new (void)
|
|
{
|
|
return gst_test_clock_new_with_start_time (0);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_new_with_start_time:
|
|
* @start_time: a #GstClockTime set to the desired start time of the clock.
|
|
*
|
|
* Creates a new test clock with its time set to the specified time.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: (transfer full): a #GstTestClock cast to #GstClock.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
GstClock *
|
|
gst_test_clock_new_with_start_time (GstClockTime start_time)
|
|
{
|
|
g_assert_cmpuint (start_time, !=, GST_CLOCK_TIME_NONE);
|
|
return g_object_new (GST_TYPE_TEST_CLOCK, "start-time", start_time, NULL);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_set_time:
|
|
* @test_clock: a #GstTestClock of which to set the time
|
|
* @new_time: a #GstClockTime later than that returned by gst_clock_get_time()
|
|
*
|
|
* Sets the time of @test_clock to the time given by @new_time. The time of
|
|
* @test_clock is monotonically increasing, therefore providing a @new_time
|
|
* which is earlier or equal to the time of the clock as given by
|
|
* gst_clock_get_time() is a programming error.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
void
|
|
gst_test_clock_set_time (GstTestClock * test_clock, GstClockTime new_time)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
g_assert_cmpuint (new_time, !=, GST_CLOCK_TIME_NONE);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
g_assert_cmpuint (new_time, >=, priv->internal_time);
|
|
|
|
priv->internal_time = new_time;
|
|
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
|
|
"clock set to %" GST_TIME_FORMAT, GST_TIME_ARGS (new_time));
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_advance_time:
|
|
* @test_clock: a #GstTestClock for which to increase the time
|
|
* @delta: a positive #GstClockTimeDiff to be added to the time of the clock
|
|
*
|
|
* Advances the time of the @test_clock by the amount given by @delta. The
|
|
* time of @test_clock is monotonically increasing, therefore providing a
|
|
* @delta which is negative or zero is a programming error.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
void
|
|
gst_test_clock_advance_time (GstTestClock * test_clock, GstClockTimeDiff delta)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
g_assert_cmpint (delta, >=, 0);
|
|
g_assert_cmpuint (delta, <, G_MAXUINT64 - delta);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
|
|
"advancing clock by %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (delta), GST_TIME_ARGS (priv->internal_time + delta));
|
|
priv->internal_time += delta;
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_peek_id_count:
|
|
* @test_clock: a #GstTestClock for which to count notifications
|
|
*
|
|
* Determine the number of pending clock notifications that have been
|
|
* requested from the @test_clock.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: the number of pending clock notifications.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
guint
|
|
gst_test_clock_peek_id_count (GstTestClock * test_clock)
|
|
{
|
|
guint result;
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
result = gst_test_clock_peek_id_count_unlocked (test_clock);
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_has_id:
|
|
* @test_clock: a #GstTestClock to ask if it provided the notification
|
|
* @id: (transfer none): a #GstClockID clock notification
|
|
*
|
|
* Checks whether @test_clock was requested to provide the clock notification
|
|
* given by @id.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: %TRUE if the clock has been asked to provide the given clock
|
|
* notification, %FALSE otherwise.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
gboolean
|
|
gst_test_clock_has_id (GstTestClock * test_clock, GstClockID id)
|
|
{
|
|
gboolean result;
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
g_assert (id != NULL);
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
result = gst_test_clock_lookup_entry_context (test_clock, id) != NULL;
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_peek_next_pending_id:
|
|
* @test_clock: a #GstTestClock to check the clock notifications for
|
|
* @pending_id: (allow-none) (out) (transfer full): a #GstClockID clock
|
|
* notification to look for
|
|
*
|
|
* Determines if the @pending_id is the next clock notification scheduled to
|
|
* be triggered given the current time of the @test_clock.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Return: %TRUE if @pending_id is the next clock notification to be
|
|
* triggered, %FALSE otherwise.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
gboolean
|
|
gst_test_clock_peek_next_pending_id (GstTestClock * test_clock,
|
|
GstClockID * pending_id)
|
|
{
|
|
gboolean result;
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
result = gst_test_clock_peek_next_pending_id_unlocked (test_clock,
|
|
pending_id);
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_wait_for_next_pending_id:
|
|
* @test_clock: #GstTestClock for which to get the pending clock notification
|
|
* @pending_id: (allow-none) (out) (transfer full): #GstClockID
|
|
* with information about the pending clock notification
|
|
*
|
|
* Waits until a clock notification is requested from @test_clock. There is no
|
|
* timeout for this wait, see the main description of #GstTestClock. A reference
|
|
* to the pending clock notification is stored in @pending_id.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
void
|
|
gst_test_clock_wait_for_next_pending_id (GstTestClock * test_clock,
|
|
GstClockID * pending_id)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
while (priv->entry_contexts == NULL)
|
|
g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
|
|
|
|
g_assert (gst_test_clock_peek_next_pending_id_unlocked (test_clock,
|
|
pending_id));
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_wait_for_pending_id_count:
|
|
* @test_clock: #GstTestClock for which to await having enough pending clock
|
|
* @count: the number of pending clock notifications to wait for
|
|
*
|
|
* Blocks until at least @count clock notifications have been requested from
|
|
* @test_clock. There is no timeout for this wait, see the main description of
|
|
* #GstTestClock.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
void
|
|
gst_test_clock_wait_for_pending_id_count (GstTestClock * test_clock,
|
|
guint count)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
while (gst_test_clock_peek_id_count_unlocked (test_clock) < count)
|
|
g_cond_wait (&priv->entry_added_cond, GST_OBJECT_GET_LOCK (test_clock));
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_process_next_clock_id:
|
|
* @test_clock: a #GstTestClock for which to retrive the next pending clock
|
|
* notification
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: (transfer full): a #GstClockID containing the next pending clock
|
|
* notification.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
GstClockID
|
|
gst_test_clock_process_next_clock_id (GstTestClock * test_clock)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GstClockID result = NULL;
|
|
GstClockEntryContext *ctx = NULL;
|
|
GList *cur;
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
for (cur = priv->entry_contexts; cur != NULL && result == NULL;
|
|
cur = cur->next) {
|
|
ctx = cur->data;
|
|
|
|
if (priv->internal_time >= GST_CLOCK_ENTRY_TIME (ctx->clock_entry))
|
|
result = gst_clock_id_ref (ctx->clock_entry);
|
|
}
|
|
|
|
if (result != NULL) {
|
|
GstClockEntry *entry = ctx->clock_entry;
|
|
|
|
if (ctx->time_diff >= 0)
|
|
GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_OK;
|
|
else
|
|
GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_EARLY;
|
|
|
|
if (entry->func != NULL) {
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
entry->func (GST_CLOCK (test_clock), priv->internal_time, entry,
|
|
entry->user_data);
|
|
GST_OBJECT_LOCK (test_clock);
|
|
}
|
|
|
|
gst_test_clock_remove_entry (test_clock, entry);
|
|
|
|
if (GST_CLOCK_ENTRY_TYPE (entry) == GST_CLOCK_ENTRY_PERIODIC) {
|
|
GST_CLOCK_ENTRY_TIME (entry) += GST_CLOCK_ENTRY_INTERVAL (entry);
|
|
|
|
if (entry->func != NULL)
|
|
gst_test_clock_add_entry (test_clock, entry, NULL);
|
|
}
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_test_clock_get_next_entry_time:
|
|
* @test_clock: a #GstTestClock to fetch the next clock notification time for
|
|
*
|
|
* Retrieve the requested time for the next pending clock notification.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Returns: a #GstClockTime set to the time of the next pending clock
|
|
* notification. If no clock notifications have been requested
|
|
* %GST_CLOCK_TIME_NONE will be returned.
|
|
*
|
|
* Since: 1.2
|
|
*/
|
|
GstClockTime
|
|
gst_test_clock_get_next_entry_time (GstTestClock * test_clock)
|
|
{
|
|
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
|
|
GstClockTime result = GST_CLOCK_TIME_NONE;
|
|
GList *imminent_clock_id;
|
|
|
|
g_assert (GST_IS_TEST_CLOCK (test_clock));
|
|
|
|
GST_OBJECT_LOCK (test_clock);
|
|
|
|
/* The list of pending clock notifications is sorted by time,
|
|
so the most imminent one is the first one in the list. */
|
|
imminent_clock_id = g_list_first (priv->entry_contexts);
|
|
if (imminent_clock_id != NULL) {
|
|
GstClockEntryContext *ctx = imminent_clock_id->data;
|
|
result = GST_CLOCK_ENTRY_TIME (ctx->clock_entry);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (test_clock);
|
|
|
|
return result;
|
|
}
|