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membrane_rtp_plugin

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Membrane Multimedia Framework plugin for RTP

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membrane_rtp_plugin lib membrane rtcp parser.ex
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lib/membrane/rtcp/parser.ex 

defmodule Membrane.RTCP.Parser do

  @moduledoc """

  Parses the incoming RTCP packets and sends to a parent using a notification (`t:notification_t/0`)

  """



  use Membrane.Log, tag: :membrane_rtcp_parser

  use Membrane.Sink



  alias Membrane.{Buffer, RemoteStream, RTCP, Time}



  @type notification_t() :: {:received_rtcp, RTCP.CompoundPacket.t()}



  def_input_pad :input,

    caps: {RemoteStream, type: :packetized, content_format: one_of([nil, RTCP])},

    demand_unit: :buffers



  @impl true

  def handle_prepared_to_playing(_ctx, state) do

    {{:ok, demand: {:input, 1}}, state}

  end



  @impl true

  def handle_write(:input, %Buffer{payload: payload, metadata: metadata}, _ctx, state) do

    arrival_ts = Map.get(metadata, :arrival_ts, Time.vm_time())



    with {:ok, parsed_rtcp} <- RTCP.CompoundPacket.parse(payload) do

      {{:ok, notify: {:received_rtcp, parsed_rtcp, arrival_ts}, demand: {:input, 1}}, state}

    else

      {:error, reason} ->

        warn("Received invalid RTCP packet: #{inspect(reason)}")

        {{:ok, demand: {:input, 1}}, state}

    end

  end

end