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| <a href="#GstTestClock.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#GstTestClock.description" class="shortcut">Description</a> |
| | |
| <a href="#GstTestClock.object-hierarchy" class="shortcut">Object Hierarchy</a> |
| | |
| <a href="#GstTestClock.properties" class="shortcut">Properties</a> |
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| <div class="refentry"> |
| <a name="GstTestClock"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstTestClock.top_of_page"></a>GstTestClock</span></h2> |
| <p>GstTestClock — Controllable, deterministic clock for GStreamer unit tests</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsynopsisdiv"> |
| <a name="GstTestClock.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <gst/check/gsttestclock.h> |
| |
| struct <a class="link" href="GstTestClock.html#GstTestClock-struct" title="struct GstTestClock">GstTestClock</a>; |
| struct <a class="link" href="GstTestClock.html#GstTestClockClass" title="struct GstTestClockClass">GstTestClockClass</a>; |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> * <a class="link" href="GstTestClock.html#gst-test-clock-new" title="gst_test_clock_new ()">gst_test_clock_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>); |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> * <a class="link" href="GstTestClock.html#gst-test-clock-new-with-start-time" title="gst_test_clock_new_with_start_time ()">gst_test_clock_new_with_start_time</a> (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> start_time</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTestClock.html#gst-test-clock-set-time" title="gst_test_clock_set_time ()">gst_test_clock_set_time</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> new_time</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTestClock.html#gst-test-clock-advance-time" title="gst_test_clock_advance_time ()">gst_test_clock_advance_time</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTimeDiff"><span class="type">GstClockTimeDiff</span></a> delta</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="GstTestClock.html#gst-test-clock-peek-id-count" title="gst_test_clock_peek_id_count ()">gst_test_clock_peek_id_count</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstTestClock.html#gst-test-clock-has-id" title="gst_test_clock_has_id ()">gst_test_clock_has_id</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> id</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GstTestClock.html#gst-test-clock-peek-next-pending-id" title="gst_test_clock_peek_next_pending_id ()">gst_test_clock_peek_next_pending_id</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> *pending_id</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-next-pending-id" title="gst_test_clock_wait_for_next_pending_id ()">gst_test_clock_wait_for_next_pending_id</a> |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> *pending_id</code></em>); |
| <span class="returnvalue">void</span> <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-pending-id-count" title="gst_test_clock_wait_for_pending_id_count ()">gst_test_clock_wait_for_pending_id_count</a> |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> count</code></em>); |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="returnvalue">GstClockID</span></a> <a class="link" href="GstTestClock.html#gst-test-clock-process-next-clock-id" title="gst_test_clock_process_next_clock_id ()">gst_test_clock_process_next_clock_id</a> |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>); |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a> <a class="link" href="GstTestClock.html#gst-test-clock-get-next-entry-time" title="gst_test_clock_get_next_entry_time ()">gst_test_clock_get_next_entry_time</a> (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="synopsis"> |
| <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| +----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html">GstClock</a> |
| +----GstTestClock |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.properties"></a><h2>Properties</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="GstTestClock.html#GstTestClock--start-time" title='The "start-time" property'>start-time</a>" <span class="type">guint64</span> : Read / Write / Construct Only |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.description"></a><h2>Description</h2> |
| <p> |
| GstTestClock is an implementation of <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> which has different |
| behaviour compared to <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstSystemClock.html"><span class="type">GstSystemClock</span></a>. Time for <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstSystemClock.html"><span class="type">GstSystemClock</span></a> advances |
| according to the system time, while time for <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> changes only |
| when <a class="link" href="GstTestClock.html#gst-test-clock-set-time" title="gst_test_clock_set_time ()"><code class="function">gst_test_clock_set_time()</code></a> or <a class="link" href="GstTestClock.html#gst-test-clock-advance-time" title="gst_test_clock_advance_time ()"><code class="function">gst_test_clock_advance_time()</code></a> are |
| called. <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> provides unit tests with the possibility to |
| precisely advance the time in a deterministic manner, independent of the |
| system time or any other external factors. |
| </p> |
| <p> |
| </p> |
| <div class="example"> |
| <a name="idp70736576"></a><p class="title"><b>Example 1. Advancing the time of a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a></b></p> |
| <div class="example-contents"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1 |
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| 16</pre></td> |
| <td class="listing_code"><pre class="programlisting"><span class="gtkdoc ppc">#include <gst/gst.h></span> |
| <span class="gtkdoc ppc">#include <gst/check/gsttestclock.h></span> |
| |
| GstClock <span class="gtkdoc opt">*</span>clock<span class="gtkdoc opt">;</span> |
| GstTestClock <span class="gtkdoc opt">*</span>test_clock<span class="gtkdoc opt">;</span> |
| |
| clock <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-new">gst_test_clock_new</a></span> <span class="gtkdoc opt">();</span> |
| test_clock <span class="gtkdoc opt">=</span> <span class="function">GST_TEST_CLOCK</span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Time: %"</span> GST_TIME_FORMAT<span class="gtkdoc opt">,</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS">GST_TIME_ARGS</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">)));</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-advance-time">gst_test_clock_advance_time</a></span> <span class="gtkdoc opt">(</span> test_clock<span class="gtkdoc opt">,</span> <span class="number">1</span> <span class="gtkdoc opt">*</span> GST_SECOND<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Time: %"</span> GST_TIME_FORMAT<span class="gtkdoc opt">,</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS">GST_TIME_ARGS</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">)));</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Date-and-Time-Functions.html#g-usleep">g_usleep</a></span> <span class="gtkdoc opt">(</span><span class="number">10</span> <span class="gtkdoc opt">*</span> G_USEC_PER_SEC<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Time: %"</span> GST_TIME_FORMAT<span class="gtkdoc opt">,</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS">GST_TIME_ARGS</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">)));</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-set-time">gst_test_clock_set_time</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> <span class="number">42</span> <span class="gtkdoc opt">*</span> GST_SECOND<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Time: %"</span> GST_TIME_FORMAT<span class="gtkdoc opt">,</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS">GST_TIME_ARGS</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">)));</span> |
| <span class="gtkdoc opt">...</span></pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| </div> |
| <p><br class="example-break"> |
| </p> |
| <p> |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> allows for setting up single shot or periodic clock notifications |
| as well as waiting for these notifications synchronously (using |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-wait"><code class="function">gst_clock_id_wait()</code></a>) or asynchronously (using <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-wait-async"><code class="function">gst_clock_id_wait_async()</code></a> or |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-wait-async-full"><code class="function">gst_clock_id_wait_async_full()</code></a>). This is used by many GStreamer elements, |
| among them <a class="link" href="GstBaseSrc.html" title="GstBaseSrc"><span class="type">GstBaseSrc</span></a> and <a class="link" href="GstBaseSink.html" title="GstBaseSink"><span class="type">GstBaseSink</span></a>. |
| </p> |
| <p> |
| <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> keeps track of these clock notifications. By calling |
| <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-next-pending-id" title="gst_test_clock_wait_for_next_pending_id ()"><code class="function">gst_test_clock_wait_for_next_pending_id()</code></a> or |
| <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-pending-id-count" title="gst_test_clock_wait_for_pending_id_count ()"><code class="function">gst_test_clock_wait_for_pending_id_count()</code></a> a unit tests may wait for the |
| next one or several clock notifications to be requested. Additionally unit |
| tests may release blocked waits in a controlled fashion by calling |
| <a class="link" href="GstTestClock.html#gst-test-clock-process-next-clock-id" title="gst_test_clock_process_next_clock_id ()"><code class="function">gst_test_clock_process_next_clock_id()</code></a>. This way a unit test can control the |
| inaccuracy (jitter) of clock notifications, since the test can decide to |
| release blocked waits when the clock time has advanced exactly to, or past, |
| the requested clock notification time. |
| </p> |
| <p> |
| There are also interfaces for determining if a notification belongs to a |
| <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> or not, as well as getting the number of requested clock |
| notifications so far. |
| </p> |
| <p> |
| N.B.: When a unit test waits for a certain amount of clock notifications to |
| be requested in <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-next-pending-id" title="gst_test_clock_wait_for_next_pending_id ()"><code class="function">gst_test_clock_wait_for_next_pending_id()</code></a> or |
| <a class="link" href="GstTestClock.html#gst-test-clock-wait-for-pending-id-count" title="gst_test_clock_wait_for_pending_id_count ()"><code class="function">gst_test_clock_wait_for_pending_id_count()</code></a> then these functions may block |
| for a long time. If they block forever then the expected clock notifications |
| were never requested from <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a>, and so the assumptions in the code |
| of the unit test are wrong. The unit test case runner in <span class="type">GstCheck</span> is |
| expected to catch these cases either by the default test case timeout or the |
| one set for the unit test by calling <code class="function">tcase_set_timeout()</code>. |
| </p> |
| <p> |
| The sample code below assumes that the element under test will delay a |
| buffer pushed on the source pad by some latency until it arrives on the sink |
| pad. Moreover it is assumed that the element will at some point call |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-wait"><code class="function">gst_clock_id_wait()</code></a> to synchronously wait for a specific time. The first |
| buffer sent will arrive exactly on time only delayed by the latency. The |
| second buffer will arrive a little late (7ms) due to simulated jitter in the |
| clock notification. |
| </p> |
| <p> |
| </p> |
| <div class="example"> |
| <a name="idp62524464"></a><p class="title"><b>Example 2. Demonstration of how to work with clock notifications and <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a></b></p> |
| <div class="example-contents"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
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| 67 |
| 68 |
| 69 |
| 70</pre></td> |
| <td class="listing_code"><pre class="programlisting"><span class="gtkdoc ppc">#include <gst/gst.h></span> |
| <span class="gtkdoc ppc">#include <gst/check/gstcheck.h></span> |
| <span class="gtkdoc ppc">#include <gst/check/gsttestclock.h></span> |
| |
| GstClockTime latency<span class="gtkdoc opt">;</span> |
| GstElement <span class="gtkdoc opt">*</span>element<span class="gtkdoc opt">;</span> |
| GstPad <span class="gtkdoc opt">*</span>srcpad<span class="gtkdoc opt">;</span> |
| GstClock <span class="gtkdoc opt">*</span>clock<span class="gtkdoc opt">;</span> |
| GstTestClock <span class="gtkdoc opt">*</span>test_clock<span class="gtkdoc opt">;</span> |
| GstBuffer buf<span class="gtkdoc opt">;</span> |
| GstClockID pending_id<span class="gtkdoc opt">;</span> |
| GstClockID processed_id<span class="gtkdoc opt">;</span> |
| |
| latency <span class="gtkdoc opt">=</span> <span class="number">42</span> <span class="gtkdoc opt">*</span> GST_MSECOND<span class="gtkdoc opt">;</span> |
| element <span class="gtkdoc opt">=</span> <span class="function">create_element</span> <span class="gtkdoc opt">(</span>latency<span class="gtkdoc opt">, ...);</span> |
| srcpad <span class="gtkdoc opt">=</span> <span class="function">get_source_pad</span> <span class="gtkdoc opt">(</span>element<span class="gtkdoc opt">);</span> |
| |
| clock <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-new">gst_test_clock_new</a></span> <span class="gtkdoc opt">();</span> |
| test_clock <span class="gtkdoc opt">=</span> <span class="function">GST_TEST_CLOCK</span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#gst-element-set-clock">gst_element_set_clock</a></span> <span class="gtkdoc opt">(</span>element<span class="gtkdoc opt">,</span> clock<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Set time, create and push the first buffer</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-set-time">gst_test_clock_set_time</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> <span class="number">0</span><span class="gtkdoc opt">);</span> |
| buf <span class="gtkdoc opt">=</span> <span class="function">create_test_buffer</span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">), ...);</span> |
| <span class="function">gst_assert_cmpint</span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push">gst_pad_push</a></span> <span class="gtkdoc opt">(</span>srcpad<span class="gtkdoc opt">,</span> buf<span class="gtkdoc opt">), ==,</span> GST_FLOW_OK<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Block until element is waiting for a clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-wait-for-next-pending-id">gst_test_clock_wait_for_next_pending_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">, &</span>pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Advance to the requested time of the clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-advance-time">gst_test_clock_advance_time</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> latency<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Release the next blocking wait and make sure it is the one from element</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| processed_id <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-process-next-clock-id">gst_test_clock_process_next_clock_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert">g_assert</a></span> <span class="gtkdoc opt">(</span>processed_id <span class="gtkdoc opt">==</span> pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-ENTRY-STATUS:CAPS">GST_CLOCK_ENTRY_STATUS</a></span> <span class="gtkdoc opt">(</span>processed_id<span class="gtkdoc opt">), ==,</span> GST_CLOCK_OK<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-unref">gst_clock_id_unref</a></span> <span class="gtkdoc opt">(</span>pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-unref">gst_clock_id_unref</a></span> <span class="gtkdoc opt">(</span>processed_id<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Validate that element produced an output buffer and check its timestamp</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function">get_number_of_output_buffer</span> <span class="gtkdoc opt">(...), ==,</span> <span class="number">1</span><span class="gtkdoc opt">);</span> |
| buf <span class="gtkdoc opt">=</span> <span class="function">get_buffer_pushed_by_element</span> <span class="gtkdoc opt">(</span>element<span class="gtkdoc opt">, ...);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GST-BUFFER-TIMESTAMP:CAPS">GST_BUFFER_TIMESTAMP</a></span> <span class="gtkdoc opt">(</span>buf<span class="gtkdoc opt">), ==,</span> latency<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#gst-buffer-unref">gst_buffer_unref</a></span> <span class="gtkdoc opt">(</span>buf<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Check that element does not wait for any clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert">g_assert</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-peek-next-pending-id">gst_test_clock_peek_next_pending_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">) ==</span> FALSE<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Set time, create and push the second buffer</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-advance-time">gst_test_clock_advance_time</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> <span class="number">10</span> <span class="gtkdoc opt">*</span> GST_SECOND<span class="gtkdoc opt">);</span> |
| buf <span class="gtkdoc opt">=</span> <span class="function">create_test_buffer</span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time">gst_clock_get_time</a></span> <span class="gtkdoc opt">(</span>clock<span class="gtkdoc opt">), ...);</span> |
| <span class="function">gst_assert_cmpint</span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push">gst_pad_push</a></span> <span class="gtkdoc opt">(</span>srcpad<span class="gtkdoc opt">,</span> buf<span class="gtkdoc opt">), ==,</span> GST_FLOW_OK<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Block until element is waiting for a new clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-wait-for-next-pending-id">gst_test_clock_wait_for_next_pending_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">, &</span>pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Advance past 7ms beyond the requested time of the clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-advance-time">gst_test_clock_advance_time</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> latency <span class="gtkdoc opt">+</span> <span class="number">7</span> <span class="gtkdoc opt">*</span> GST_MSECOND<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Release the next blocking wait and make sure it is the one from element</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| processed_id <span class="gtkdoc opt">=</span> <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-process-next-clock-id">gst_test_clock_process_next_clock_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert">g_assert</a></span> <span class="gtkdoc opt">(</span>processed_id <span class="gtkdoc opt">==</span> pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-ENTRY-STATUS:CAPS">GST_CLOCK_ENTRY_STATUS</a></span> <span class="gtkdoc opt">(</span>processed_id<span class="gtkdoc opt">), ==,</span> GST_CLOCK_OK<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-unref">gst_clock_id_unref</a></span> <span class="gtkdoc opt">(</span>pending_id<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-id-unref">gst_clock_id_unref</a></span> <span class="gtkdoc opt">(</span>processed_id<span class="gtkdoc opt">);</span> |
| |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Validate that element produced an output buffer and check its timestamp</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function">get_number_of_output_buffer</span> <span class="gtkdoc opt">(...), ==,</span> <span class="number">1</span><span class="gtkdoc opt">);</span> |
| buf <span class="gtkdoc opt">=</span> <span class="function">get_buffer_pushed_by_element</span> <span class="gtkdoc opt">(</span>element<span class="gtkdoc opt">, ...);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint">g_assert_cmpint</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GST-BUFFER-TIMESTAMP:CAPS">GST_BUFFER_TIMESTAMP</a></span> <span class="gtkdoc opt">(</span>buf<span class="gtkdoc opt">), ==,</span> |
| <span class="number">10</span> <span class="gtkdoc opt">*</span> GST_SECOND <span class="gtkdoc opt">+</span> latency <span class="gtkdoc opt">+</span> <span class="number">7</span> <span class="gtkdoc opt">*</span> GST_MSECOND<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#gst-buffer-unref">gst_buffer_unref</a></span> <span class="gtkdoc opt">(</span>buf<span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html#GST-INFO:CAPS">GST_INFO</a></span> <span class="gtkdoc opt">(</span><span class="string">"Check that element does not wait for any clock notification</span><span class="gtkdoc esc">\n</span><span class="string">"</span><span class="gtkdoc opt">);</span> |
| <span class="function"><a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert">g_assert</a></span> <span class="gtkdoc opt">(</span><span class="function"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#gst-test-clock-peek-next-pending-id">gst_test_clock_peek_next_pending_id</a></span> <span class="gtkdoc opt">(</span>test_clock<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">) ==</span> FALSE<span class="gtkdoc opt">);</span> |
| <span class="gtkdoc opt">...</span></pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| </div> |
| <p><br class="example-break"> |
| </p> |
| <p> |
| Since <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> is only supposed to be used in unit tests it calls |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert"><code class="function">g_assert()</code></a>, <a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpint"><code class="function">g_assert_cmpint()</code></a> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Testing.html#g-assert-cmpuint"><code class="function">g_assert_cmpuint()</code></a> to validate all function |
| arguments. This will highlight any issues with the unit test code itself. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstTestClock-struct"></a><h3>struct GstTestClock</h3> |
| <pre class="programlisting">struct GstTestClock;</pre> |
| <p> |
| A <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> structure which is based on a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> along with some |
| private data. |
| </p> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstTestClockClass"></a><h3>struct GstTestClockClass</h3> |
| <pre class="programlisting">struct GstTestClockClass { |
| GstClockClass parent_class; |
| }; |
| </pre> |
| <p> |
| The class of a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a>, which has no virtual methods to override. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody><tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockClass"><span class="type">GstClockClass</span></a> <em class="structfield"><code><a name="GstTestClockClass.parent-class"></a>parent_class</code></em>;</span></p></td> |
| <td>the parent class structure</td> |
| </tr></tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-new"></a><h3>gst_test_clock_new ()</h3> |
| <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> * gst_test_clock_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p> |
| Creates a new test clock with its time set to zero. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody><tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> cast to <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-new-with-start-time"></a><h3>gst_test_clock_new_with_start_time ()</h3> |
| <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> * gst_test_clock_new_with_start_time (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> start_time</code></em>);</pre> |
| <p> |
| Creates a new test clock with its time set to the specified time. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>start_time</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> set to the desired start time of the clock.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> cast to <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-set-time"></a><h3>gst_test_clock_set_time ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_test_clock_set_time (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> new_time</code></em>);</pre> |
| <p> |
| Sets the time of <em class="parameter"><code>test_clock</code></em> to the time given by <em class="parameter"><code>new_time</code></em>. The time of |
| <em class="parameter"><code>test_clock</code></em> is monotonically increasing, therefore providing a <em class="parameter"><code>new_time</code></em> |
| which is earlier or equal to the time of the clock as given by |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time"><code class="function">gst_clock_get_time()</code></a> is a programming error. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> of which to set the time</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>new_time</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> later than that returned by <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#gst-clock-get-time"><code class="function">gst_clock_get_time()</code></a> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-advance-time"></a><h3>gst_test_clock_advance_time ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_test_clock_advance_time (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTimeDiff"><span class="type">GstClockTimeDiff</span></a> delta</code></em>);</pre> |
| <p> |
| Advances the time of the <em class="parameter"><code>test_clock</code></em> by the amount given by <em class="parameter"><code>delta</code></em>. The |
| time of <em class="parameter"><code>test_clock</code></em> is monotonically increasing, therefore providing a |
| <em class="parameter"><code>delta</code></em> which is negative or zero is a programming error. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> for which to increase the time</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>delta</code></em> :</span></p></td> |
| <td>a positive <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTimeDiff"><span class="type">GstClockTimeDiff</span></a> to be added to the time of the clock</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-peek-id-count"></a><h3>gst_test_clock_peek_id_count ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> gst_test_clock_peek_id_count (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>);</pre> |
| <p> |
| Determine the number of pending clock notifications that have been |
| requested from the <em class="parameter"><code>test_clock</code></em>. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> for which to count notifications</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the number of pending clock notifications.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-has-id"></a><h3>gst_test_clock_has_id ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_test_clock_has_id (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> id</code></em>);</pre> |
| <p> |
| Checks whether <em class="parameter"><code>test_clock</code></em> was requested to provide the clock notification |
| given by <em class="parameter"><code>id</code></em>. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> to ask if it provided the notification</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> clock notification. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the clock has been asked to provide the given clock |
| notification, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-peek-next-pending-id"></a><h3>gst_test_clock_peek_next_pending_id ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_test_clock_peek_next_pending_id (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> *pending_id</code></em>);</pre> |
| <p> |
| Determines if the <em class="parameter"><code>pending_id</code></em> is the next clock notification scheduled to |
| be triggered given the current time of the <em class="parameter"><code>test_clock</code></em>. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <p> |
| Return: <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>pending_id</code></em> is the next clock notification to be |
| triggered, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> to check the clock notifications for</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>pending_id</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> clock |
| notification to look for. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-wait-for-next-pending-id"></a><h3>gst_test_clock_wait_for_next_pending_id ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_test_clock_wait_for_next_pending_id |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> *pending_id</code></em>);</pre> |
| <p> |
| Waits until a clock notification is requested from <em class="parameter"><code>test_clock</code></em>. There is no |
| timeout for this wait, see the main description of <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a>. A reference |
| to the pending clock notification is stored in <em class="parameter"><code>pending_id</code></em>. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td> |
| <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> for which to get the pending clock notification</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>pending_id</code></em> :</span></p></td> |
| <td> |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> |
| with information about the pending clock notification. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-wait-for-pending-id-count"></a><h3>gst_test_clock_wait_for_pending_id_count ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> gst_test_clock_wait_for_pending_id_count |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> count</code></em>);</pre> |
| <p> |
| Blocks until at least <em class="parameter"><code>count</code></em> clock notifications have been requested from |
| <em class="parameter"><code>test_clock</code></em>. There is no timeout for this wait, see the main description of |
| <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a>. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td> |
| <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> for which to await having enough pending clock</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>count</code></em> :</span></p></td> |
| <td>the number of pending clock notifications to wait for</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-process-next-clock-id"></a><h3>gst_test_clock_process_next_clock_id ()</h3> |
| <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="returnvalue">GstClockID</span></a> gst_test_clock_process_next_clock_id |
| (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>);</pre> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> for which to retrive the next pending clock |
| notification</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockID"><span class="type">GstClockID</span></a> containing the next pending clock |
| notification. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-test-clock-get-next-entry-time"></a><h3>gst_test_clock_get_next_entry_time ()</h3> |
| <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a> gst_test_clock_get_next_entry_time (<em class="parameter"><code><a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> *test_clock</code></em>);</pre> |
| <p> |
| Retrieve the requested time for the next pending clock notification. |
| </p> |
| <p> |
| MT safe. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>test_clock</code></em> :</span></p></td> |
| <td>a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> to fetch the next clock notification time for</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> set to the time of the next pending clock |
| notification. If no clock notifications have been requested |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><code class="literal">GST_CLOCK_TIME_NONE</code></a> will be returned.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p class="since">Since 1.2</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstTestClock--start-time"></a><h3>The <code class="literal">"start-time"</code> property</h3> |
| <pre class="programlisting"> "start-time" <span class="type">guint64</span> : Read / Write / Construct Only</pre> |
| <p> |
| When a <a class="link" href="GstTestClock.html" title="GstTestClock"><span class="type">GstTestClock</span></a> is constructed it will have a certain start time set. |
| If the clock was created using <a class="link" href="GstTestClock.html#gst-test-clock-new-with-start-time" title="gst_test_clock_new_with_start_time ()"><code class="function">gst_test_clock_new_with_start_time()</code></a> then |
| this property contains the value of the <em class="parameter"><code>start_time</code></em> argument. If |
| <a class="link" href="GstTestClock.html#gst-test-clock-new" title="gst_test_clock_new ()"><code class="function">gst_test_clock_new()</code></a> was called the clock started at time zero, and thus |
| this property contains the value 0. |
| </p> |
| <p>Default value: 0</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstTestClock.see-also"></a><h2>See Also</h2> |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstSystemClock.html"><span class="type">GstSystemClock</span></a>, <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
| Generated by GTK-Doc V1.18</div> |
| </body> |
| </html> |
