master: 
develop: 
The aim of Tracktion Engine is to provide a high level data model and set of classes for building sequence based audio applications. You can build anything from a simple file-player or sequencer to a full blown DAW.
Take a look at the features document for the full range of features.
If you are converting a Tracktion Engine v1 or earlier project to v2, read through the Engine 2.0 Transition document for a list of design and breaking changes (as well as new functionality).
- macOS
- Windows
- Linux
- Raspberry PI
- iOS
- Android
Tracktion Engine is supplied as a JUCE module so it can easily fit in to an existing JUCE application. You'll find the module code under modules/tracktion_engine. Additionally, JUCE is added as a Git Submodule here in order to build the examples.
To start with, clone the repo and recurse the submodules:
$ git clone --recurse-submodules https://github.com/Tracktion/tracktion_engine.git
Example projects are located in /examples.
There are two main example projects, DemoRunner and EngineInPluginDemo. In each of these folder is a CMakeLists.txt file you can use to build them (or run the build script mentioned below).
DemoRunner contains a number of app examples showcasing various Engine functionality.
EngineInPluginDemo builds a plugin which contains Tracktion Engine and syncs the host timeline to the Edit's timeline.
Additionally there are Benchmark an TestRunner apps used by CI to test Engine functionality and performance.
To generate all the examples for the running platform use the script in /tests.
These are bash scripts so if you're on Windows you can use the Git Bash shell that comes with Git to run the following.
$ cd tests
$ ./generate_examples
generate_examples will generate the IDE project files for you. Alternatively you can run the build script to build the examples as well, ready to run.
Once the example projects have been generated or built you can find them in examples/example_name/build.
Once you're ready to dive in to the code, open the IDE files and have a read through the tutorials in /tutorials. You can view these on GitHub here to see the rendered Markdown.
We are still in the process of fleshing out Doxygen formatted comments but the Doxygen generated documentation can be found here: https://tracktion.github.io/tracktion_engine/modules.html
We're in the process of creating a portal to view and examine our benchmarks. This is really for our own internal use but might be of interest to some people: https://tracktion.github.io/tracktion_engine/benchmarks.html
Tracktion Engine is provided in JUCE module format, for bug reports and features requests, please visit the JUCE Forum and post using the Tracktion Engine category - the Tracktion Engine developers are active there and will read every post and respond accordingly. We don't accept third party GitHub pull requests directly due to copyright restrictions but if you would like to contribute any changes please contact us.
Tracktion Engine is covered by a GPL/Commercial license.
There are multiple commercial licensing tiers for Tracktion Engine, with different terms for each. For prices, see the Tracktion Developers Page.
N.B. Although Tracktion Engine utilises JUCE, it is not part of JUCE nor owned by the same company. As such it is licensed separately and you must make sure you have an appropriate JUCE licence from juce.com when distributing Tracktion Engine based products. Similarly, Tracktion Engine is not included in a JUCE licence and you must get the above mentioned Tracktion Engine licence to distribute products.
The Tracktion Graph module (also used by Tracktion Engine) includes the MIT licensed farbot library which requires the following notice to be included as part of the software:
MIT License
Copyright (c) 2019 Fabian Renn
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.