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asteroid
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3 Commits

Author SHA1 Message Date
Glenn Thompson c79cebcfa7 Phase 1: Define CLOS protocol layer for cl-streamer 
- New cl-streamer/protocol.lisp with generic functions for server,
  pipeline, encoder, and hook protocols
- harmony-backend.lisp: convert defuns to defmethod on protocol generics,
  import/re-export protocol symbols, add hook system, backward-compat aliases
- encoder.lisp, aac-encoder.lisp: add encoder-encode/encoder-close methods
- package.lisp: export all protocol symbols
- cl-streamer.asd: add protocol.lisp to components

Runtime verified: audio streams, metadata displays, crossfades work.
 2026-03-08 11:09:50 +03:00
Glenn Thompson 2649a8169a AAC encoding fixes, crossfade, buffer tuning, README rewrite 
- Fix FDK-AAC C shim: use proper OUT_BITSTREAM_DATA=3 constant and INT types
- Add frame-aligned PCM accumulation buffer to AAC encoder for clean output
- Add fdkaac_encode and fdkaac_close to C shim (all FDK-AAC calls in C)
- Implement crossfade between tracks (3s overlap, 2s fade-in/out)
- Tune buffer: 90% drain sleep for encoding headroom, 64KB burst-on-connect
- Add FFI bindings for new shim functions
- Rewrite README.org with full architecture docs and integration plan
 2026-03-03 20:20:43 +03:00
Glenn Thompson 6c15441a08 feat: Add MP3 and AAC encoder FFI bindings 
- LAME FFI (lame-ffi.lisp) for MP3 encoding
- FDK-AAC FFI (fdkaac-ffi.lisp) for AAC encoding
- High-level encoder wrappers (encoder.lisp, aac-encoder.lisp)
- Fix compilation warnings in buffer.lisp and icy-protocol.lisp

Both encoders tested and loading successfully:
- LAME version: 3.101
- FDK-AAC: libfdk-aac.so.2

Next steps: Harmony integration for audio pipeline
 2026-03-03 16:46:29 +03:00