b25a4f9fb3
Implements a new sink for broadcasting FLAC audio to multiple concurrent
HTTP clients (UPnP renderers, web players, etc.) with dynamic metadata updates.
Key features:
- Lazy encoder initialization (auto-detects sample rate from first chunk)
- Broadcast architecture: one encoder, multiple concurrent clients
- Dual streaming modes:
* Pure FLAC mode (standard HTTP streaming)
* ICY metadata mode (Icecast/Shoutcast protocol with "Now Playing")
- Automatic lifecycle management (starts on first client, stops when last disconnects)
- Full metadata support via TrackBoundary sync markers
Architecture:
AudioSegments → PCM conversion → FLAC encoder → Broadcaster task
↓
broadcast::channel
↓
Multiple clients (FlacClientStream/IcyClientStream)
New components:
- StreamingFlacSink: Terminal sink node for audio pipeline
- StreamHandle: Clonable handle for HTTP handlers to subscribe clients
- FlacClientStream: Pure FLAC AsyncRead implementation
- IcyClientStream: ICY-wrapped FLAC with metadata injection
- MetadataSnapshot: Serializable metadata for SSE/JSON endpoints
Feature: http-stream (requires pmoflac, pmometadata, bytes, serde)
38 lines
1.1 KiB
TOML
38 lines
1.1 KiB
TOML
[package]
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name = "pmoaudio-ext"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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# Core audio types
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pmoaudio = { path = "../pmoaudio" }
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pmocovers = { path = "../pmocovers"}
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# Optional dependencies for cache-sink feature
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pmoaudiocache = { path = "../pmoaudiocache", optional = true }
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pmoflac = { path = "../pmoflac", optional = true }
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pmometadata = { path = "../pmometadata", optional = true }
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# Optional dependencies for playlist integration
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pmoplaylist = { path = "../pmoplaylist", optional = true }
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pmocache = { path = "../pmocache", optional = true }
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# Async runtime
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tokio = { version = "1.0", features = ["full"] }
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tokio-util = { version = "0.7" }
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async-trait = "0.1"
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# Utilities
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tracing = "0.1"
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# HTTP streaming dependencies
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bytes = { version = "1.0", optional = true }
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serde = { version = "1.0", features = ["derive"], optional = true }
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[features]
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default = []
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cache-sink = ["dep:pmoaudiocache", "dep:pmoflac", "dep:pmometadata"]
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playlist = ["cache-sink", "dep:pmoplaylist", "dep:pmocache"]
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http-stream = ["dep:pmoflac", "dep:pmometadata", "dep:bytes", "dep:serde"]
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all = ["cache-sink", "playlist", "http-stream"]
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