AppSink.connectPullSample
gulong connectPullSample(T)(T callback, Flag!"After" after = No.After) if (isCallable!T
&& is(ReturnType!T == gst.sample.Sample)
&& (Parameters!T.length < 1 || (ParameterStorageClassTuple!T[0] == ParameterStorageClass.none && is(Parameters!T[0] : gstapp.app_sink.AppSink)))
&& Parameters!T.length < 2)Connect to PullSample signal.
This function blocks until a sample or EOS becomes available or the appsink element is set to the READY/NULL state.
This function will only return samples when the appsink is in the PLAYING state. All rendered samples will be put in a queue so that the application can pull samples at its own rate.
Note that when the application does not pull samples fast enough, the queued samples could consume a lot of memory, especially when dealing with raw video frames. It's possible to control the behaviour of the queue with the "drop" and "max-buffers" / "max-bytes" / "max-time" set of properties.
If an EOS event was received before any buffers, this function returns null. Use gst_app_sink_is_eos () to check for the EOS condition.
Parameters
callback | signal callback delegate or function to connect gst.sample.Sample callback(gstapp.app_sink.AppSink appSink) appSink the instance the signal is connected to (optional) Returns a #GstSample or null when the appsink is stopped or EOS. |
after | Yes.After to execute callback after default handler, No.After to execute before (default) |