6a7ba01102
This commit implements a new audio source that reads from pmoplaylist
and streams tracks continuously, along with a resampling node to
normalize sample rates.
## New Components
### PlaylistSource (pmoaudio-ext)
- New source in pmoaudio-ext/src/sources/playlist_source.rs
- Reads from pmoplaylist ReadHandle
- Decodes tracks from audio cache (pmoaudiocache)
- Emits PCM with heterogeneous sample_rate and bit_depth
- Polls playlist when empty (configurable interval, default 100ms)
- Emits TrackBoundary markers between tracks
- Graceful shutdown with EndOfStream on stop
- Gated behind 'playlist' feature flag
**Design Philosophy:**
- Keeps each node simple (single responsibility)
- Emits raw PCM without format normalization
- Pipeline designer chooses how to handle heterogeneity
- Ideal for Radio Paradise (homogeneous streams)
- Requires ResamplingNode + ToI24Node for mixed playlists
### ResamplingNode (pmoaudio)
- Generic resampling node in pmoaudio/src/nodes/resampling_node.rs
- Normalizes variable sample rates to a target rate
- Uses libsoxr for high-quality resampling
- Automatically detects sample rate changes
- Recreates resampler as needed
- Preserves chunk type (I16/I24/I32/F32/F64)
- Quality adapts to bit depth (Medium/High/Very High)
## Architecture
PlaylistSource is placed in pmoaudio-ext to avoid circular dependencies:
- pmoaudio-ext depends on: pmoaudio, pmoplaylist, pmoaudiocache
- No reverse dependencies = clean dependency graph
## Configuration
### pmoaudio-ext/Cargo.toml
- Updated 'playlist' feature to include pmoaudiocache, pmocache, pmoflac
- Added sources module export
### pmoaudio
- Added resampling_node module
- Public export: ResamplingNode
## System Requirements
⚠️ **IMPORTANT**: libsoxr-dev must be installed for compilation
See INSTALL_NOTES.md for installation instructions per platform.
## Usage Example
```rust
// Radio Paradise (homogeneous 44.1kHz/16bit)
let mut source = PlaylistSource::new(playlist, cache);
let to_i24 = ToI24Node::new();
source.register(Box::new(to_i24));
// Mixed playlist (needs normalization)
let mut source = PlaylistSource::new(playlist, cache);
let mut resampler = ResamplingNode::new(48000); // Force 48kHz
let to_i24 = ToI24Node::new();
source.register(Box::new(resampler));
resampler.register(Box::new(to_i24));
```
## Files Changed
- pmoaudio-ext/Cargo.toml: Update playlist feature
- pmoaudio-ext/src/lib.rs: Add sources module
- pmoaudio-ext/src/sources/mod.rs: New sources module
- pmoaudio-ext/src/sources/playlist_source.rs: New PlaylistSource (580 lines)
- pmoaudio/src/nodes/resampling_node.rs: New ResamplingNode (350 lines)
- pmoaudio/src/nodes/mod.rs: Register resampling_node
- pmoaudio/src/lib.rs: Export ResamplingNode
- INSTALL_NOTES.md: System requirements documentation
## Future Work
- GapInsertionNode (inserts silence between tracks)
- CrossfadeNode (fade-in/fade-out mixing)
- Examples (deferred until implementation validated)
Développement de l'application PMOMusic en RUST
Création de la structure
mkdir pizzicato
cd pizzicato
jj git init
touch Readme.md
Maintenant on peu créer l'application PMOMusic
cargo new PMOMusic
On ajoute un fichier Cargo.toml décrivant le workspace pizzicato qui ne contient que notre nouvelle application
[workspace]
members = ["PMOMusic"]
On crée le package pmoupnp
cargo new pmoupnp --lib
Cela modifie automatiquement le fichier Cargo.toml créé juste avant.
Dans ce package un sous module statevariable
cd pmoupnp/src
mkdir statevariable
Petite expériences jujutsu
- Je veux voir l'historique
jj log
@ lkmlpmnk eric@coissac.eu 2025-09-12 09:48:38 a27b6a9a
│ On commence les states variables
○ mzvokmpk eric@coissac.eu 2025-09-12 09:32:27 926827f3
│ Retire le répertoir target du suivi
○ skknrvut eric@coissac.eu 2025-09-12 09:05:27 cbad5c34
│ Initialisation des l'arborescence de répertoires
◆ zzzzzzzz root() 00000000
- Je veux me mettre dans un commit:
jj edit mzvokmpk
je veux créer un nouveau commit à la suite d'un autre et m'y placer
jj new mzvokmpk
mzvokmpk peut être @ pour dans le commit courant ou @- pour dans le parent
- je veux arreter de suivre
- un fichier
jj file untrack <filename>
- un répertoire
find dirname -type f -exec jj file untrack {} \;
Dans tous les cas ne pas oublier d'inscrire le fichier ou le repertoire dans le .gitignore
- je veux déplacer un commit comme un sous commit d'un aute
jj rebase -d destination -r source
eventuellement faire un
jj resolve --all
jj rebase --continue
pour résoudre les conflits
Installer rust sur mac
brew install rustup-init
rustup-init
rustup default stable