2 Commits

Author	SHA1	Message	Date
Claude	83e9cca756	fix: Correct ResamplingNode API usage for AudioChunkData ... - Replace BitDepth::from_audio_chunk() with match pattern - Use get_frames() instead of stereo() method (API change) - Use as_i32() instead of to_i32() for I24 conversion Also successfully installed libsoxr locally without sudo: - Downloaded libsoxr-dev and libsoxr0 via apt-get - Extracted to ~/.local using dpkg -x - Set PKG_CONFIG_PATH and LD_LIBRARY_PATH - Compilation now succeeds with libsoxr The implementation is now complete and compiles successfully.	2025-11-05 13:56:27 +00:00
Claude	6a7ba01102	feat: Add PlaylistSource and ResamplingNode for playlist playback ... 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)	2025-11-05 13:44:24 +00:00