Sink Element that notifies the pipeline about buffers and events it receives.

By default Sink will demand buffers automatically, but you can override that behaviour by using autodemand option. If set to false no automatic demands shall be made. Demands can be then triggered by sending {:make_demand, size} message.

This element can be used in conjunction with Membrane.Testing.Pipeline to enable asserting on buffers and events it receives.

alias Membrane.Testing
{:ok, pid} = Testing.Pipeline.start_link(Testing.Pipeline.Options{
  elements: [
    ...,
    sink: %Testing.Sink{}
  ]
})

Asserting that Membrane.Testing.Sink element processed a buffer that matches a specific pattern can be achieved using Membrane.Testing.Assertions.assert_sink_buffer/3.

assert_sink_buffer(pid, :sink ,%Membrane.Buffer{payload: 255})

Element options

Passed via struct Membrane.Testing.Sink.t/0

• autodemand

  boolean

  Default value: true
  If true element will automatically make demands. If it is set to false demand has to be triggered manually by sending :make_demand message.

Pads

:input