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fix(api): stream audio store path to eliminate whole-file buffering (OOM)

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Processors now emit a ProcessedAudio plan with a streamed writer instead of a whole-file AudioBinary; vault writes stream via RegisterResourceStreamingAsync. Header parsing is bounded. Wave 2 (waveform/Opus) still re-reads the full file by design.
This commit is contained in:
daniel-c-harvey
2026-06-25 15:27:28 -04:00
parent 1e063d95f4
commit 79bbbd4956
13 changed files with 920 additions and 168 deletions
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DeepDrftContent/Processors/AudioProcessorRouter.cs
+7 -7
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@@ -24,18 +24,18 @@ public class AudioProcessorRouter
}
/// <summary>
/// Processes <paramref name="filePath"/> with the processor matching its extension, returning an
/// <see cref="AudioBinary"/> carrying the stored bytes and extracted metadata. Throws
/// <see cref="ArgumentException"/> for unsupported extensions.
/// Processes <paramref name="filePath"/> with the processor matching its extension, returning a
/// <see cref="ProcessedAudio"/> store plan (extracted metadata plus a streamed writer for the
/// canonical vault bytes). Throws <see cref="ArgumentException"/> for unsupported extensions.
/// </summary>
public async Task<AudioBinary?> ProcessAudioFileAsync(string filePath)
public async Task<ProcessedAudio?> ProcessAudioFileAsync(string filePath, CancellationToken cancellationToken = default)
{
var ext = Path.GetExtension(filePath).ToLowerInvariant();
return ext switch
{
".wav" => await _wavProcessor.ProcessWavFileAsync(filePath),
".mp3" => await _mp3Processor.ProcessMp3FileAsync(filePath),
".flac" => await _flacProcessor.ProcessFlacFileAsync(filePath),
".wav" => await _wavProcessor.ProcessWavFileAsync(filePath, cancellationToken),
".mp3" => await _mp3Processor.ProcessMp3FileAsync(filePath, cancellationToken),
".flac" => await _flacProcessor.ProcessFlacFileAsync(filePath, cancellationToken),
_ => throw new ArgumentException($"Unsupported audio format: {ext}", nameof(filePath)),
};
}