Add G711 payloader and depayloader, update deps, release 0.6.3

README.md

@@ -18,7 +18,7 @@ Add `ex_webrtc` to the list of dependencies in `mix.exs`
 ```elixir
 def deps do
   [
-    {:ex_webrtc, "~> 0.6.2"}
+    {:ex_webrtc, "~> 0.6.3"}
   ]
 end
 ```
@@ -29,7 +29,7 @@ adding optional `ex_sctp` dependency
 ```elixir
 def deps do
   [
-    {:ex_webrtc, "~> 0.6.2"},
+    {:ex_webrtc, "~> 0.6.3"},
     {:ex_sctp, "~> 0.1.0"}
   ]
 end

lib/ex_webrtc/rtp/depayloader.ex

@@ -36,6 +36,8 @@ defmodule ExWebRTC.RTP.Depayloader do
     case String.downcase(mime_type) do
       "video/vp8" -> {:ok, ExWebRTC.RTP.Depayloader.VP8}
       "audio/opus" -> {:ok, ExWebRTC.RTP.Depayloader.Opus}
+      "audio/pcma" -> {:ok, ExWebRTC.RTP.Depayloader.G711}
+      "audio/pcmu" -> {:ok, ExWebRTC.RTP.Depayloader.G711}
       _other -> {:error, :no_depayloader_for_codec}
     end
   end

lib/ex_webrtc/rtp/g711/depayloader.ex

@@ -0,0 +1,25 @@
+defmodule ExWebRTC.RTP.Depayloader.G711 do
+  @moduledoc false
+  # Decapsulates G.711 audio out of RTP packet.
+  #
+  # Based in [RFC 3551: RTP Profile for Audio and Video Conferences with Minimal Control, section 4.5.14](https://datatracker.ietf.org/doc/html/rfc3551#section-4.5.14)
+
+  alias ExRTP.Packet
+
+  @behaviour ExWebRTC.RTP.Depayloader.Behaviour
+
+  @type t :: %__MODULE__{}
+
+  defstruct []
+
+  @impl true
+  @spec new() :: t()
+  def new() do
+    %__MODULE__{}
+  end
+
+  @impl true
+  @spec depayload(t(), Packet.t()) :: {binary(), t()}
+  def depayload(%__MODULE__{} = depayloader, %Packet{payload: payload}),
+    do: {payload, depayloader}
+end

lib/ex_webrtc/rtp/g711/payloader.ex

@@ -0,0 +1,23 @@
+defmodule ExWebRTC.RTP.Payloader.G711 do
+  @moduledoc false
+  # Encapsulates G.711 audio packet into an RTP packet.
+  #
+  # Based in [RFC 3551: RTP Profile for Audio and Video Conferences with Minimal Control, section 4.5.14](https://datatracker.ietf.org/doc/html/rfc3551#section-4.5.14)
+
+  @behaviour ExWebRTC.RTP.Payloader.Behaviour
+
+  @type t :: %__MODULE__{}
+
+  defstruct []
+
+  @impl true
+  def new(_max_payload_size) do
+    %__MODULE__{}
+  end
+
+  @impl true
+  @spec payload(t(), binary()) :: {[ExRTP.Packet.t()], t()}
+  def payload(%__MODULE__{} = payloader, packet) when packet != <<>> do
+    {[ExRTP.Packet.new(packet)], payloader}
+  end
+end

lib/ex_webrtc/rtp/opus/depayloader.ex

@@ -1,6 +1,6 @@
 defmodule ExWebRTC.RTP.Depayloader.Opus do
   @moduledoc false
-  # Decapsualtes Opus audio out of RTP packet.
+  # Decapsulates Opus audio out of RTP packet.
   #
   # Based on [RFC 7587: RTP Payload Format for the Opus Speech and Audio Codec](https://datatracker.ietf.org/doc/html/rfc7587).
 

lib/ex_webrtc/rtp/payloader.ex

@@ -40,6 +40,8 @@ defmodule ExWebRTC.RTP.Payloader do
     case String.downcase(mime_type) do
       "video/vp8" -> {:ok, ExWebRTC.RTP.Payloader.VP8}
       "audio/opus" -> {:ok, ExWebRTC.RTP.Payloader.Opus}
+      "audio/pcma" -> {:ok, ExWebRTC.RTP.Payloader.G711}
+      "audio/pcmu" -> {:ok, ExWebRTC.RTP.Payloader.G711}
       _other -> {:error, :no_payloader_for_codec}
     end
   end

mix.exs

@@ -1,7 +1,7 @@
 defmodule ExWebRTC.MixProject do
   use Mix.Project
 
-  @version "0.6.2"
+  @version "0.6.3"
   @source_url "https://github.com/elixir-webrtc/ex_webrtc"
 
   def project do

mix.lock

@@ -4,10 +4,10 @@
   "bundlex": {:hex, :bundlex, "1.5.3", "35d01e5bc0679510dd9a327936ffb518f63f47175c26a35e708cc29eaec0890b", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}, {:qex, "~> 0.5", [hex: :qex, repo: "hexpm", optional: false]}, {:req, ">= 0.4.0", [hex: :req, repo: "hexpm", optional: false]}, {:zarex, "~> 1.0", [hex: :zarex, repo: "hexpm", optional: false]}], "hexpm", "debd0eac151b404f6216fc60222761dff049bf26f7d24d066c365317650cd118"},
   "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
   "crc": {:hex, :crc, "0.10.5", "ee12a7c056ac498ef2ea985ecdc9fa53c1bfb4e53a484d9f17ff94803707dfd8", [:mix, :rebar3], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "3e673b6495a9525c5c641585af1accba59a1eb33de697bedf341e247012c2c7f"},
-  "credo": {:hex, :credo, "1.7.7", "771445037228f763f9b2afd612b6aa2fd8e28432a95dbbc60d8e03ce71ba4446", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "8bc87496c9aaacdc3f90f01b7b0582467b69b4bd2441fe8aae3109d843cc2f2e"},
-  "dialyxir": {:hex, :dialyxir, "1.4.3", "edd0124f358f0b9e95bfe53a9fcf806d615d8f838e2202a9f430d59566b6b53b", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "bf2cfb75cd5c5006bec30141b131663299c661a864ec7fbbc72dfa557487a986"},
+  "credo": {:hex, :credo, "1.7.10", "6e64fe59be8da5e30a1b96273b247b5cf1cc9e336b5fd66302a64b25749ad44d", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "71fbc9a6b8be21d993deca85bf151df023a3097b01e09a2809d460348561d8cd"},
+  "dialyxir": {:hex, :dialyxir, "1.4.5", "ca1571ac18e0f88d4ab245f0b60fa31ff1b12cbae2b11bd25d207f865e8ae78a", [:mix], [{:erlex, ">= 0.2.7", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "b0fb08bb8107c750db5c0b324fa2df5ceaa0f9307690ee3c1f6ba5b9eb5d35c3"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.41", "ab34711c9dc6212dda44fcd20ecb87ac3f3fce6f0ca2f28d4a00e4154f8cd599", [:mix], [], "hexpm", "a81a04c7e34b6617c2792e291b5a2e57ab316365c2644ddc553bb9ed863ebefa"},
-  "elixir_make": {:hex, :elixir_make, "0.8.4", "4960a03ce79081dee8fe119d80ad372c4e7badb84c493cc75983f9d3bc8bde0f", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.0", [hex: :certifi, repo: "hexpm", optional: true]}], "hexpm", "6e7f1d619b5f61dfabd0a20aa268e575572b542ac31723293a4c1a567d5ef040"},
+  "elixir_make": {:hex, :elixir_make, "0.9.0", "6484b3cd8c0cee58f09f05ecaf1a140a8c97670671a6a0e7ab4dc326c3109726", [:mix], [], "hexpm", "db23d4fd8b757462ad02f8aa73431a426fe6671c80b200d9710caf3d1dd0ffdb"},
   "elixir_uuid": {:hex, :elixir_uuid, "1.2.1", "dce506597acb7e6b0daeaff52ff6a9043f5919a4c3315abb4143f0b00378c097", [:mix], [], "hexpm", "f7eba2ea6c3555cea09706492716b0d87397b88946e6380898c2889d68585752"},
   "erlex": {:hex, :erlex, "0.2.7", "810e8725f96ab74d17aac676e748627a07bc87eb950d2b83acd29dc047a30595", [:mix], [], "hexpm", "3ed95f79d1a844c3f6bf0cea61e0d5612a42ce56da9c03f01df538685365efb0"},
   "ex_doc": {:hex, :ex_doc, "0.31.2", "8b06d0a5ac69e1a54df35519c951f1f44a7b7ca9a5bb7a260cd8a174d6322ece", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.1", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "317346c14febaba9ca40fd97b5b5919f7751fb85d399cc8e7e8872049f37e0af"},
@@ -17,15 +17,15 @@
   "ex_rtcp": {:hex, :ex_rtcp, "0.4.0", "f9e515462a9581798ff6413583a25174cfd2101c94a2ebee871cca7639886f0a", [:mix], [], "hexpm", "28956602cf210d692fcdaf3f60ca49681634e1deb28ace41246aee61ee22dc3b"},
   "ex_rtp": {:hex, :ex_rtp, "0.4.0", "1f1b5c1440a904706011e3afbb41741f5da309ce251cb986690ce9fd82636658", [:mix], [], "hexpm", "0f72d80d5953a62057270040f0f1ee6f955c08eeae82ac659c038001d7d5a790"},
   "ex_sctp": {:hex, :ex_sctp, "0.1.0", "c27075ff0d39ae66fca6570039537c73494ac1771355d4536d83f1e015681168", [:mix], [{:rustler, "~> 0.34.0", [hex: :rustler, repo: "hexpm", optional: false]}], "hexpm", "722197960d2c2682f32d4d8f3ff46f106e71d34213e4c377092e819b92c317ac"},
-  "ex_sdp": {:hex, :ex_sdp, "1.0.1", "1608551d740a1882fe89d2b1df807167de62c44ab5409a795f257069e348ac05", [:mix], [{:bunch, "~> 1.3", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}], "hexpm", "0b8c53b15f18122feed9b65c1318603bebbe33cbad36efb3995b6e03b1bf27ee"},
+  "ex_sdp": {:hex, :ex_sdp, "1.1.0", "a93d72d00704efd83f7e144e4ca9822ca4aea5b5d851353d092de40e1ad0ecdc", [:mix], [{:bunch, "~> 1.3", [hex: :bunch, repo: "hexpm", optional: false]}, {:elixir_uuid, "~> 1.2", [hex: :elixir_uuid, repo: "hexpm", optional: false]}], "hexpm", "f5c033abcda958a9b090210f9429f24b74b003c28c24175c58a033a5205a1cfe"},
   "ex_stun": {:hex, :ex_stun, "0.2.0", "feb1fc7db0356406655b2a617805e6c712b93308c8ea2bf0ba1197b1f0866deb", [:mix], [], "hexpm", "1e01ba8290082ccbf37acaa5190d1f69b51edd6de2026a8d6d51368b29d115d0"},
   "ex_turn": {:hex, :ex_turn, "0.1.0", "177405aadf3d754567d0d37cf881a83f9cacf8f45314d188633b04c4a9e7c1ec", [:mix], [{:ex_stun, "~> 0.2.0", [hex: :ex_stun, repo: "hexpm", optional: false]}], "hexpm", "d677737fb7d45274d5dac19fe3c26b9038b6effbc0a6b3e7417bccc76b6d1cd3"},
   "excoveralls": {:hex, :excoveralls, "0.18.3", "bca47a24d69a3179951f51f1db6d3ed63bca9017f476fe520eb78602d45f7756", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "746f404fcd09d5029f1b211739afb8fb8575d775b21f6a3908e7ce3e640724c6"},
   "file_system": {:hex, :file_system, "1.0.1", "79e8ceaddb0416f8b8cd02a0127bdbababe7bf4a23d2a395b983c1f8b3f73edd", [:mix], [], "hexpm", "4414d1f38863ddf9120720cd976fce5bdde8e91d8283353f0e31850fa89feb9e"},
   "finch": {:hex, :finch, "0.19.0", "c644641491ea854fc5c1bbaef36bfc764e3f08e7185e1f084e35e0672241b76d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.6.2 or ~> 1.7", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4 or ~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 1.1", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "fc5324ce209125d1e2fa0fcd2634601c52a787aff1cd33ee833664a5af4ea2b6"},
   "hpax": {:hex, :hpax, "1.0.0", "28dcf54509fe2152a3d040e4e3df5b265dcb6cb532029ecbacf4ce52caea3fd2", [:mix], [], "hexpm", "7f1314731d711e2ca5fdc7fd361296593fc2542570b3105595bb0bc6d0fad601"},
   "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
-  "makeup": {:hex, :makeup, "1.1.2", "9ba8837913bdf757787e71c1581c21f9d2455f4dd04cfca785c70bbfff1a76a3", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "cce1566b81fbcbd21eca8ffe808f33b221f9eee2cbc7a1706fc3da9ff18e6cac"},
+  "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.16.2", "627e84b8e8bf22e60a2579dad15067c755531fea049ae26ef1020cad58fe9578", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "41193978704763f6bbe6cc2758b84909e62984c7752b3784bd3c218bb341706b"},
   "makeup_erlang": {:hex, :makeup_erlang, "0.1.5", "e0ff5a7c708dda34311f7522a8758e23bfcd7d8d8068dc312b5eb41c6fd76eba", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "94d2e986428585a21516d7d7149781480013c56e30c6a233534bedf38867a59a"},
   "membrane_precompiled_dependency_provider": {:hex, :membrane_precompiled_dependency_provider, "0.1.2", "8af73b7dc15ba55c9f5fbfc0453d4a8edfb007ade54b56c37d626be0d1189aba", [:mix], [{:bundlex, "~> 1.4", [hex: :bundlex, repo: "hexpm", optional: false]}], "hexpm", "7fe3e07361510445a29bee95336adde667c4162b76b7f4c8af3aeb3415292023"},
@@ -35,11 +35,11 @@
   "nimble_parsec": {:hex, :nimble_parsec, "1.4.0", "51f9b613ea62cfa97b25ccc2c1b4216e81df970acd8e16e8d1bdc58fef21370d", [:mix], [], "hexpm", "9c565862810fb383e9838c1dd2d7d2c437b3d13b267414ba6af33e50d2d1cf28"},
   "nimble_pool": {:hex, :nimble_pool, "1.1.0", "bf9c29fbdcba3564a8b800d1eeb5a3c58f36e1e11d7b7fb2e084a643f645f06b", [:mix], [], "hexpm", "af2e4e6b34197db81f7aad230c1118eac993acc0dae6bc83bac0126d4ae0813a"},
   "qex": {:hex, :qex, "0.5.1", "0d82c0f008551d24fffb99d97f8299afcb8ea9cf99582b770bd004ed5af63fd6", [:mix], [], "hexpm", "935a39fdaf2445834b95951456559e9dc2063d0a055742c558a99987b38d6bab"},
-  "req": {:hex, :req, "0.5.6", "8fe1eead4a085510fe3d51ad854ca8f20a622aae46e97b302f499dfb84f726ac", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "cfaa8e720945d46654853de39d368f40362c2641c4b2153c886418914b372185"},
+  "req": {:hex, :req, "0.5.7", "b722680e03d531a2947282adff474362a48a02aa54b131196fbf7acaff5e4cee", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "c6035374615120a8923e8089d0c21a3496cf9eda2d287b806081b8f323ceee29"},
   "rustler": {:hex, :rustler, "0.34.0", "e9a73ee419fc296a10e49b415a2eb87a88c9217aa0275ec9f383d37eed290c1c", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:req, "~> 0.5", [hex: :req, repo: "hexpm", optional: false]}, {:toml, "~> 0.6", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm", "1d0c7449482b459513003230c0e2422b0252245776fe6fd6e41cb2b11bd8e628"},
   "shmex": {:hex, :shmex, "0.5.1", "81dd209093416bf6608e66882cb7e676089307448a1afd4fc906c1f7e5b94cf4", [:mix], [{:bunch_native, "~> 0.5.0", [hex: :bunch_native, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.0", [hex: :bundlex, repo: "hexpm", optional: false]}], "hexpm", "c29f8286891252f64c4e1dac40b217d960f7d58def597c4e606ff8fbe71ceb80"},
   "telemetry": {:hex, :telemetry, "1.3.0", "fedebbae410d715cf8e7062c96a1ef32ec22e764197f70cda73d82778d61e7a2", [:rebar3], [], "hexpm", "7015fc8919dbe63764f4b4b87a95b7c0996bd539e0d499be6ec9d7f3875b79e6"},
   "toml": {:hex, :toml, "0.7.0", "fbcd773caa937d0c7a02c301a1feea25612720ac3fa1ccb8bfd9d30d822911de", [:mix], [], "hexpm", "0690246a2478c1defd100b0c9b89b4ea280a22be9a7b313a8a058a2408a2fa70"},
-  "unifex": {:hex, :unifex, "1.2.0", "90d1ec5e6d788350e07e474f7bd8b0ee866d6606beb9ca4e20dbb26328712a84", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.4", [hex: :bundlex, repo: "hexpm", optional: false]}, {:shmex, "~> 0.5.0", [hex: :shmex, repo: "hexpm", optional: false]}], "hexpm", "7a8395aabc3ba6cff04bbe5b995de7f899a38eb57f189e49927d6b8b6ccb6883"},
+  "unifex": {:hex, :unifex, "1.2.1", "6841c170a6e16509fac30b19e4e0a19937c33155a59088b50c15fc2c36251b6b", [:mix], [{:bunch, "~> 1.0", [hex: :bunch, repo: "hexpm", optional: false]}, {:bundlex, "~> 1.4", [hex: :bundlex, repo: "hexpm", optional: false]}, {:shmex, "~> 0.5.0", [hex: :shmex, repo: "hexpm", optional: false]}], "hexpm", "8c9d2e3c48df031e9995dd16865bab3df402c0295ba3a31f38274bb5314c7d37"},
   "zarex": {:hex, :zarex, "1.0.5", "58239e3ee5d75f343262bb4df5cf466555a1c689f920e5d3651a9333972f7c7e", [:mix], [], "hexpm", "9fb72ef0567c2b2742f5119a1ba8a24a2fabb21b8d09820aefbf3e592fa9a46a"},
 }

test/ex_webrtc/rtp/depayloader_test.exs

@@ -35,6 +35,32 @@ defmodule ExWebRTC.RTP.DepayloaderTest do
              Depayloader.Opus.depayload(depayloader, @packet)
   end
 
+  test "creates a G711 depayloader and dispatches calls to its module" do
+    assert {:ok, depayloader} =
+             %RTPCodecParameters{
+               payload_type: 0,
+               mime_type: "audio/PCMU",
+               clock_rate: 8000,
+               channels: 1
+             }
+             |> Depayloader.new()
+
+    assert Depayloader.depayload(depayloader, @packet) ==
+             Depayloader.G711.depayload(depayloader, @packet)
+
+    assert {:ok, depayloader} =
+             %RTPCodecParameters{
+               payload_type: 8,
+               mime_type: "audio/PCMA",
+               clock_rate: 8000,
+               channels: 1
+             }
+             |> Depayloader.new()
+
+    assert Depayloader.depayload(depayloader, @packet) ==
+             Depayloader.G711.depayload(depayloader, @packet)
+  end
+
   test "returns error if no depayloader exists for given codec" do
     assert {:error, :no_depayloader_for_codec} =
              %RTPCodecParameters{payload_type: 97, mime_type: "video/H264", clock_rate: 90_000}

test/ex_webrtc/rtp/payloader_test.exs

@@ -32,6 +32,30 @@ defmodule ExWebRTC.RTP.PayloaderTest do
     assert Payloader.payload(payloader, @frame) == Payloader.Opus.payload(payloader, @frame)
   end
 
+  test "creates a G711 payloader and dispatches calls to its module" do
+    assert {:ok, payloader} =
+             %RTPCodecParameters{
+               payload_type: 0,
+               mime_type: "audio/PCMU",
+               clock_rate: 8000,
+               channels: 1
+             }
+             |> Payloader.new()
+
+    assert Payloader.payload(payloader, @frame) == Payloader.G711.payload(payloader, @frame)
+
+    assert {:ok, payloader} =
+             %RTPCodecParameters{
+               payload_type: 8,
+               mime_type: "audio/PCMA",
+               clock_rate: 8000,
+               channels: 1
+             }
+             |> Payloader.new()
+
+    assert Payloader.payload(payloader, @frame) == Payloader.G711.payload(payloader, @frame)
+  end
+
   test "returns error if no payloader exists for given codec" do
     assert {:error, :no_payloader_for_codec} =
              %RTPCodecParameters{payload_type: 97, mime_type: "video/H264", clock_rate: 90_000}