Packages
membrane_rtp_plugin
0.6.0
0.31.5
0.31.4
0.31.3
0.31.2
0.31.1
0.31.0
0.30.0
0.29.1
0.29.0
0.28.0
0.27.1
0.27.0
0.26.0
0.25.0
0.24.1
0.24.0
0.23.2
0.23.1
0.23.0
0.22.1
0.22.0
0.21.0
0.20.0
0.19.1
0.19.0
0.18.0
0.17.1
0.17.0
0.16.0
0.15.0
0.15.0-rc.1
0.14.0
0.13.0
0.12.2
0.12.1
0.12.0
0.11.0
0.10.0
0.9.0
0.8.2
0.8.1
0.8.0
0.7.1-alpha.3
0.7.1-alpha.2
0.7.0-alpha.2
0.7.0-alpha.1
0.7.0-alpha
0.6.1
0.6.0
0.5.1
0.5.0
0.4.0-alpha
Membrane Multimedia Framework plugin for RTP
Current section
Files
Jump to
Current section
Files
lib/membrane/srtcp/decryptor.ex
defmodule Membrane.SRTCP.Decryptor do
@moduledoc """
Converts SRTCP packets to plain RTCP.
Requires adding [libsrtp](https://github.com/membraneframework/elixir_libsrtp) dependency to work.
"""
use Membrane.Filter
alias Membrane.Buffer
def_input_pad :input, caps: :any, demand_unit: :buffers
def_output_pad :output, caps: :any
def_options policies: [
spec: [ExLibSRTP.Policy.t()],
description: """
List of SRTP policies to use for decrypting packets.
See `t:ExLibSRTP.Policy.t/0` for details.
"""
]
@impl true
def handle_init(options) do
{:ok, Map.from_struct(options) |> Map.merge(%{srtp: nil})}
end
@impl true
def handle_stopped_to_prepared(_ctx, state) do
srtp = ExLibSRTP.new()
state.policies
|> Bunch.listify()
|> Enum.each(&ExLibSRTP.add_stream(srtp, &1))
{:ok, %{state | srtp: srtp}}
end
@impl true
def handle_prepared_to_stopped(_ctx, state) do
{:ok, %{state | srtp: nil}}
end
@impl true
def handle_demand(:output, size, :buffers, _ctx, state) do
{{:ok, demand: {:input, size}}, state}
end
@impl true
def handle_process(:input, buffer, _ctx, state) do
{:ok, payload} = ExLibSRTP.unprotect_rtcp(state.srtp, buffer.payload)
{{:ok, buffer: {:output, %Buffer{buffer | payload: payload}}}, state}
end
end