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aggregator: Add gst_aggregator_push_src_event()

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This ensures that any pending events are pushed before pushing the new event.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7542>
This commit is contained in:
Sebastian Dröge 2024-09-18 16:09:13 +03:00
parent 075a81b44f
commit 37ef85f268
3 changed files with 56 additions and 0 deletions
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22
girs/GstBase-1.0.gir
View file

@ -1551,6 +1551,28 @@ control aggregating parameters for a given set of input samples.</doc>
</parameter> </parameter>
</parameters> </parameters>
</method> </method>
<method name="push_src_event" c:identifier="gst_aggregator_push_src_event" version="1.26">
<doc xml:space="preserve" filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.c">This method will push the provided event downstream. If needed, mandatory
events such as stream-start, caps, and segment events will be sent before
pushing the event.
This API does not allow pushing stream-start, caps, segment and EOS events.
Specific API like gst_aggregator_set_src_caps() should be used for these.</doc>
<source-position filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.h"/>
<return-value transfer-ownership="none">
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<instance-parameter name="aggregator" transfer-ownership="none">
<doc xml:space="preserve" filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.c">The #GstAggregator</doc>
<type name="Aggregator" c:type="GstAggregator*"/>
</instance-parameter>
<parameter name="event" transfer-ownership="full">
<doc xml:space="preserve" filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.c">the #GstEvent to push.</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</parameter>
</parameters>
</method>
<method name="selected_samples" c:identifier="gst_aggregator_selected_samples" version="1.18"> <method name="selected_samples" c:identifier="gst_aggregator_selected_samples" version="1.18">
<doc xml:space="preserve" filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.c">Subclasses should call this when they have prepared the <doc xml:space="preserve" filename="../subprojects/gstreamer/libs/gst/base/gstaggregator.c">Subclasses should call this when they have prepared the
buffers they will aggregate for each of their sink pads, but buffers they will aggregate for each of their sink pads, but

30
subprojects/gstreamer/libs/gst/base/gstaggregator.c
View file

@ -786,6 +786,36 @@ gst_aggregator_finish_buffer_list (GstAggregator * aggregator,
return klass->finish_buffer_list (aggregator, bufferlist); return klass->finish_buffer_list (aggregator, bufferlist);
} }
/**
* gst_aggregator_push_src_event:
* @aggregator: The #GstAggregator
* @event: (transfer full): the #GstEvent to push.
*
* This method will push the provided event downstream. If needed, mandatory
* events such as stream-start, caps, and segment events will be sent before
* pushing the event.
*
* This API does not allow pushing stream-start, caps, segment and EOS events.
* Specific API like gst_aggregator_set_src_caps() should be used for these.
*
* Since: 1.26
*/
gboolean
gst_aggregator_push_src_event (GstAggregator * aggregator, GstEvent * event)
{
g_return_val_if_fail (GST_EVENT_IS_DOWNSTREAM (event), FALSE);
g_return_val_if_fail (GST_EVENT_TYPE (event) != GST_EVENT_STREAM_START &&
GST_EVENT_TYPE (event) != GST_EVENT_CAPS &&
GST_EVENT_TYPE (event) != GST_EVENT_SEGMENT &&
GST_EVENT_TYPE (event) != GST_EVENT_EOS, FALSE);
if (GST_EVENT_IS_SERIALIZED (event)) {
gst_aggregator_push_mandatory_events (aggregator, FALSE);
}
return gst_pad_push_event (aggregator->srcpad, event);
}
static void static void
gst_aggregator_push_eos (GstAggregator * self) gst_aggregator_push_eos (GstAggregator * self)
{ {

4
subprojects/gstreamer/libs/gst/base/gstaggregator.h
View file

@ -383,6 +383,10 @@ GST_BASE_API
GstFlowReturn gst_aggregator_finish_buffer_list (GstAggregator * aggregator, GstFlowReturn gst_aggregator_finish_buffer_list (GstAggregator * aggregator,
GstBufferList * bufferlist); GstBufferList * bufferlist);
GST_BASE_API
gboolean gst_aggregator_push_src_event (GstAggregator * aggregator,
GstEvent * event);
GST_BASE_API GST_BASE_API
void gst_aggregator_set_src_caps (GstAggregator * self, void gst_aggregator_set_src_caps (GstAggregator * self,
GstCaps * caps); GstCaps * caps);