Pure elixir source (#33)

* Created tcp_server.
* RTMP source pure elixir implementation (#26)
* Improved validator (#32)

README.md

@@ -4,16 +4,8 @@
 [![API Docs](https://img.shields.io/badge/api-docs-yellow.svg?style=flat)](https://hexdocs.pm/membrane_rtmp_plugin)
 [![CircleCI](https://circleci.com/gh/membraneframework/membrane_rtmp_plugin.svg?style=svg)](https://circleci.com/gh/membraneframework/membrane_rtmp_plugin)
 
-This package provides RTMP server which listens to a connection from a client and element for streaming to an RTMP server. It is part of [Membrane Multimedia Framework](https://membraneframework.org).
-### Server
-After establishing connection it receives RTMP stream, demux it and outputs H264 video and AAC audio.
-At this moment only one client can connect to the server.
-### Client
-After establishing connection with server it waits to receive video and audio streams. Once both streams are received they are streamed to the server.
-Currently only the following codecs are supported:
-- H264 for video
-- AAC for audio
-
+This package provides RTMP server which receives an RTMP stream from a client and an element for streaming to an RTMP server.
+It is part of [Membrane Multimedia Framework](https://membraneframework.org).
 
 ## Installation
 
@@ -22,37 +14,59 @@ The package can be installed by adding `membrane_rtmp_plugin` to your list of de
 ```elixir
 def deps do
   [
-    {:membrane_rtmp_plugin, "~> 0.8.1"}
+    {:membrane_rtmp_plugin, "~> 0.9.0"}
   ]
 end
 ```
 
+## SourceBin
+
+Requires a socket, which has been connected to the client. It receives RTMP stream, demuxes it and outputs H264 video and AAC audio. 
+
+## Client
+After establishing connection with server it waits to receive video and audio streams. Once both streams are received they are streamed to the server.
+Currently only the following codecs are supported:
+- H264 for video
+- AAC for audio
+
+## Tcp Server
+It's a simple implementation of tcp server. It opens a tcp port and listens for incoming connections. For each new connection, a user-provided function is executed.
+
 ### Prerequisites
 In order to successfully build and install the plugin, you need to have **ffmpeg == 4.4** installed on your system
 
 ## Usage
-### `Membrane.RTMP.Source` - RTMP Server
+
+### RTMP receiver
 Server-side example, in which Membrane will act as an RTMP server and receive the stream, can be found under [`examples/source.exs`](examples/source.exs). Run it with:
+
 ```bash
 elixir examples/source.exs
 ```
+
 When the server is ready you can connect to it with RTMP. If you just want to test it, you can use FFmpeg:
 
 ```bash
 ffmpeg -re -i test/fixtures/testsrc.flv -f flv -c:v copy -c:a copy rtmp://localhost:5000
 ```
-### `Membrane.RTMP.Sink` - Streaming over RTMP
-Streaming implementation example is provided with the following [script](examples/sink.exs). Run it with:
+
+### Streaming with RTMP
+Streaming implementation example is provided with the following [`examples/sink.exs`](examples/sink.exs). Run it with:
+
 ```bash
 elixir examples/sink.exs
 ```
+
 It will connect to RTMP server provided via URL and stream H264 video and AAC audio.
 RTMP server that will receive this stream can be launched with ffmpeg by running the following commands:
+
 ```bash
 export RTMP_URL=rtmp://localhost:1935
 ffmpeg -listen 1 -f flv -i rtmp://localhost:1935 -c copy dest.flv
 ```
+
 It will receive stream and once streaming is completed dump it to .flv file. If you are using the command above, please remember to run it **before** the streaming script.
+
 ## Copyright and License
 
 Copyright 2021, [Software Mansion](https://swmansion.com/?utm_source=git&utm_medium=readme&utm_campaign=membrane_rtmp_plugin)

bundlex.exs

@@ -9,13 +9,6 @@ defmodule Membrane.RTMP.BundlexProject do
 
   defp natives(_platform) do
     [
-      rtmp_source: [
-        sources: ["source/rtmp_source.c"],
-        deps: [unifex: :unifex],
-        interface: [:nif],
-        preprocessor: Unifex,
-        pkg_configs: ["libavformat", "libavutil"]
-      ],
       rtmp_sink: [
         sources: ["sink/rtmp_sink.c"],
         deps: [unifex: :unifex],