Merge pull request #55 from membraneframework/fix-prevent-adding-pads-when-playing

Fix the guard preventing adding a pad in state `:playing`, bump package version

Author: balins

README.md

@@ -12,7 +12,7 @@ The package can be installed by adding `membrane_mp4_plugin` to your list of dep
 ```elixir
 defp deps do
 [
-	{:membrane_mp4_plugin, "~> 0.18.0"}
+	{:membrane_mp4_plugin, "~> 0.18.1"}
 ]
 end
 ```

lib/membrane_mp4/muxer/cmaf.ex

@@ -67,10 +67,10 @@ defmodule Membrane.MP4.Muxer.CMAF do
   end
 
   @impl true
-  def handle_pad_added(_pad, ctx, _state) when ctx.playback_state == :playing,
+  def handle_pad_added(_pad, ctx, _state) when ctx.playback == :playing,
     do:
       raise(
-        "New tracks can be added to #{inspect(__MODULE__)} only before transition to state: :playing"
+        "New tracks can be added to #{inspect(__MODULE__)} only before playback transition to :playing"
       )
 
   @impl true

mix.exs

@@ -1,7 +1,7 @@
 defmodule Membrane.MP4.Plugin.MixProject do
   use Mix.Project
 
-  @version "0.18.0"
+  @version "0.18.1"
   @github_url "https://github.com/membraneframework/membrane_mp4_plugin"
 
   def project do