audioStreamMp3DecoderDecodeFrame was treating minimp3's "can't confirm
a frame here" verdict as genuine garbage even when the window simply
hadn't been topped up yet - discarding real frames whenever one landed
near the tail of a not-yet-full window, since minimp3 needs to also
validate the *next* frame's header to confirm a decode. On a real ~236s
VBR file this silently dropped ~5.5% of frames, heard as the stream
finishing early ("racing") with a stutter at each drop.
Now refills before ever trusting a "not found" verdict as confirmed
garbage, and grows the window from 16KB to 256KB (past the point of
diminishing returns, ~0.3% residual loss). PSP is unaffected - it uses
the hardware sceMp3 decoder, not this file.
Also removes now-unneeded debug instrumentation from the Linux feed
path.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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