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merged 3 commits into from
Apr 7, 2025
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requirements: support embedded targets #10

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c056503
requirements: support embedded targets
dvdsk Apr 2, 2025
bdb5812
relax atomics and float demands on embedded platforms
dvdsk Apr 4, 2025
9aae960
mention no_std in embedded requirement
dvdsk Apr 4, 2025
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8 changes: 8 additions & 0 deletions requirements.md
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Expand Up @@ -4,6 +4,7 @@ Becoming the standard audio stack for Rust requires us to support near all neede
To that end we start with features supported by popular Rust audio engines like *Kira* & *Rodio*. Requests of those engines also point to needed use-cases. Finally we hope to learn from looking at large projects using audio like *Bevy* and *Fyrox*.

### Supported by Kira

- Smoothly adjusting properties of sounds without pops (via [tween](https://docs.rs/kira/latest/kira/struct.Tween.html))
- Change the settings of effects automatically [modulate](https://docs.rs/kira/latest/kira/modulator/index.html)
- Apply audio effects:
Expand Down Expand Up @@ -79,3 +80,10 @@ Needs we have ourselves or features we have seen requested but can not link too.
- Microphone as input node to the audio graph @dvdsk.
- Add an output to the OS, any audio send to it enters the audio graph. @dvdsk
- Add an input to the OS, it gets audio from an output of the audio graph. @dvdsk
- Have (partial) functionality on `no_std` targets. Such as capable embedded hardware. The targets need to at least:
- Can supports 32 bit floating points through [libm](https://crates.io/crates/libm).
- Has 32 bit float atomics via [portable-atomics](https://crates.io/crates/portable-atomic).
This would allow applications such as:
- (battery operated) Alarm clocks
- Light portable audio players
We might make this a soft requirement, meaning we attempt to achieve this if it does not take too much extra effort.