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docs: update AudioProcessor notes for EXTENSIBLE-PCM WAV support

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daniel-c-harvey
2026-06-10 15:26:50 -04:00
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DeepDrftContent/CLAUDE.md
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@@ -78,13 +78,15 @@ public async Task<bool> RegisterResourceAsync(string vaultId, string entryId, Fi
`AudioProcessor.ProcessWavFileAsync(filePath)`:
1. Validates the RIFF/WAVE/PCM structure.
2. Parses the fmt and data chunks.
3. Extracts duration (sample count / sample rate) and bitrate (file size / duration).
4. Returns `AudioBinary` with all metadata.
5. **Fallback**: If parsing fails, logs a warning and returns defaults (180s / 1411 kbps / 44.1 kHz / 16-bit stereo).
1. Validates the RIFF/WAVE structure and format code.
2. Accepts standard PCM (audioFormat=1) and WAVE_FORMAT_EXTENSIBLE (audioFormat=0xFFFE) when the SubFormat GUID indicates PCM.
3. Normalizes EXTENSIBLE-PCM uploads to standard 44-byte PCM WAV before storing in the vault.
4. Parses the fmt and data chunks.
5. Extracts duration (sample count / sample rate) and bitrate (file size / duration).
6. Returns `AudioBinary` with all metadata.
7. **Fallback**: If parsing fails, logs a warning and returns defaults (180s / 1411 kbps / 44.1 kHz / 16-bit stereo).
PCM-only today. Other formats (mp3, flac, aac, ogg, m4a) are listed in `MimeTypeExtensions` but not implemented. The processor validates RIFF/WAVE/PCM format — anything else is rejected.
PCM-only (both standard and EXTENSIBLE variants). Other formats (mp3, flac, aac, ogg, m4a) are listed in `MimeTypeExtensions` but not implemented. EXTENSIBLE with non-PCM SubFormats are rejected. The processor validates RIFF/WAVE/PCM structure — anything else is rejected.
## Image processor