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Table of Contents
GSoC 2021: Sound Open Firmware project
Sound Open Firmware
Sound Open Firmware is an open source audio DSP firmware and SDK that provides audio firmware infrastructure and development tools for developers who are interested in audio or signal processing on modern DSPs
Proposal 1: Add dynamic load module support for SOF
Github issues:
Code license: GPL-2.0 OR BSD-3-Clause
The project is considered successful if the code is accepted into SOF github tree.
Mentor: Daniel Baluta daniel.baluta@nxp.com
Proposal 2: Add support for converting topology binaries generated with TPLG1.0 into TPLG2.0 conf format
Code license: GPL-2.0 OR BSD-3-Clause
The project is considered successful if the code is accepted into SOF github tree.
Mentor: Ranjani Sridharan ranjani.sridharan@linux.intel.com
Proposal 3: Loopback implementation using demux component
The general idea would be to have an ALSA device where playback stream would be looped back into a capture stream. This can be useful for echo reference or for audio decoding libraries that could offload the decoding part to the DSP.
Code license: GPL-2.0 OR BSD-3-Clause
The project is considered successful if the code is accepted into SOF github tree.
Mentor: Iuliana Prodan iuliana.prodan@nxp.com
Where to start?
Have a look at:
Small ideas to work on to get familiar with the project
All the ideas below are just ways of exploring the project.
Get SOF binaries
- Follow tutorial here Getting started in order to compile Linux kernel, SOF firmware, SOF topologies.
Create one Pull Request for the SOF repo
- Fork https://github.com/thesofproject/sof.git repo into your github account
- Follow instructions here Create a Pull Request and learn how to create a PR.
- Use checkpatch.pl to find small issues to fix
- e.g ./scripts/checkpatch.pl –no-tree –strict -f src/lib/alloc.c
- Keep in mind, a commit should fix only one type of error/warnings. If you need to fix multiple problems create multiple commits.
Create one patch for the Linux kernel
Watch this Write and Submit your first Linux kernel Patch.
Before sending the patch to community please send it to daniel.baluta@nxp.com for review. Make sure you only look into drivers/staging directory.
Use Qemu to get a feel of how things are working
- Qemu repo is at https://github.com/thesofproject/qemu/ we use branch sof-v4.2
- Build qemu by looking at Firmware . Look at chapter 'Build the Qemu DSP emulator from source.'
- Try to boot sof-imx8.ri SOF binary with qemu
- Use the following command ./xtensa-softmmu/qemu-system-xtensa -cpu imx8 -M adsp_imx8 -nographic -kernel ../sof.git/build_imx8_gcc/src/arch/xtensa/sof-imx8.ri
- Look at Using the Qemu DSP emulator and try to run a full system with Linux kernel and SOF firmware.
Contact
- Mailing list: sound-open-firmware@alsa-project.org
- IRC: #sof on irc.freenode.net
- Gitter: https://gitter.im/thesofproject
