need_data

Description:

public virtual signal void need_data (uint length)

Signal that the source needs more data.

In the callback or from another thread you should call push-buffer or end-of-stream.

length is just a hint and when it is set to -1, any number of bytes can be pushed into appsrc.

You can call push-buffer multiple times until the enough-data signal is fired.

Parameters:

length

the amount of bytes needed.