Library to asynchronously run an RTSP-Server on an ESP32, in order to stream raw audio.
I modified the library Micro-RTSP for video streaming by Kevin Hester: https://github.com/geeksville/Micro-RTSP
Copyright 2018 S. Kevin Hester-Chow, kevinh@geeksville.com (MIT License)
// set up an Audio source (with your implementation for IAudioSource)
AudioTestSource audioSource;
// create the Audio Streamer using the audio source
AudioStreamer streamer(&audioSource);
// create the RTSPServer using the streamer
RTSPServer rtsp = RTSPServer(&streamer);
// start the server asynchronously
rtsp.runAsync();The Audio Source must implement the IAudioInterface, mainly the function readBytes() which provides the audio data to the streamer.
Open VLC, ->File -> Open Network and enter rtsp://ip-address
For the time beeing only a sampling rate of 16000 with a mono signal is supported. If you try other settings you will need to adjust the fragment_size and timer_period. But I noticed that the UDP of the ESP32 is just not fast enough to handle more and the only way around this limitation is to use CODECs.
The AudioTools project provides this extended functionality, so I recommend to use this library together with the extended classes, codecs and resample functionality. Examples can be found in the communications examples folder.
Here is the documentation for the classes that are provided by this project.
For Arduino you can download the library as zip and call include Library -> zip library. Or you can git clone this project into the Arduino libraries folder e.g. with
cd ~/Documents/Arduino/libraries
git clone pschatzmann/MICRO-RTSP-AUDIO.git