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aggregator: Add optional GstStructure info parameter to "samples-selected" signal

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Subclasses can use this to provide more information, for example
audioaggregator could provide the offset into the output buffer where
the next data is going to be filled.

See https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/805

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/590>
This commit is contained in:
Sebastian Dröge 2020-08-07 09:30:55 +03:00
parent e243e152f0
commit 84385bdd86
2 changed files with 10 additions and 5 deletions
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12
libs/gst/base/gstaggregator.c
View file

@ -2739,6 +2739,7 @@ gst_aggregator_class_init (GstAggregatorClass * klass)
* @pts: The presentation timestamp of the next output buffer
* @dts: The decoding timestamp of the next output buffer
* @duration: The duration of the next output buffer
* @info: (nullable): a #GstStructure containing additional information
*
* Signals that the #GstAggregator subclass has selected the next set
* of input samples it will aggregate. Handlers may call
@ -2748,9 +2749,10 @@ gst_aggregator_class_init (GstAggregatorClass * klass)
*/
gst_aggregator_signals[SIGNAL_SAMPLES_SELECTED] =
g_signal_new ("samples-selected", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, NULL, G_TYPE_NONE, 4,
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, NULL, G_TYPE_NONE, 5,
GST_TYPE_SEGMENT | G_SIGNAL_TYPE_STATIC_SCOPE, GST_TYPE_CLOCK_TIME,
GST_TYPE_CLOCK_TIME, GST_TYPE_CLOCK_TIME);
GST_TYPE_CLOCK_TIME, GST_TYPE_CLOCK_TIME,
GST_TYPE_STRUCTURE | G_SIGNAL_TYPE_STATIC_SCOPE);
}
static inline gpointer
@ -3615,6 +3617,7 @@ gst_aggregator_update_segment (GstAggregator * self, const GstSegment * segment)
* @pts: The presentation timestamp of the next output buffer
* @dts: The decoding timestamp of the next output buffer
* @duration: The duration of the next output buffer
* @info: (nullable): a #GstStructure containing additional information
*
* Subclasses should call this when they have prepared the
* buffers they will aggregate for each of their sink pads, but
@ -3629,13 +3632,14 @@ gst_aggregator_update_segment (GstAggregator * self, const GstSegment * segment)
*/
void
gst_aggregator_selected_samples (GstAggregator * self,
GstClockTime pts, GstClockTime dts, GstClockTime duration)
GstClockTime pts, GstClockTime dts, GstClockTime duration,
GstStructure * info)
{
g_return_if_fail (GST_IS_AGGREGATOR (self));
if (self->priv->emit_signals) {
g_signal_emit (self, gst_aggregator_signals[SIGNAL_SAMPLES_SELECTED], 0,
&GST_AGGREGATOR_PAD (self->srcpad)->segment, pts, dts, duration);
&GST_AGGREGATOR_PAD (self->srcpad)->segment, pts, dts, duration, info);
}
self->priv->selected_samples_called_or_warned = TRUE;

3
libs/gst/base/gstaggregator.h
View file

@ -421,7 +421,8 @@ GST_BASE_API
void gst_aggregator_selected_samples (GstAggregator * self,
GstClockTime pts,
GstClockTime dts,
GstClockTime duration);
GstClockTime duration,
GstStructure * info);
/**
* GstAggregatorStartTimeSelection: