The feeder's final chunk zero-padded up to the full 1024-frame
reserved size (e.g. 956 padding samples for a 68-sample remainder),
jumping straight from whatever amplitude the waveform ended at down
to silence - an audible click. Fixed two ways: fade the last 32 real
frames linearly to zero before any padding begins (also covers the
case where total length is an exact multiple of the chunk size, where
the waveform would otherwise just stop abruptly with no padding at
all), and declare only the real sample count via
sceAudioSetChannelDataLen (64-aligned) for the final chunk instead of
padding out to the full reserved length, shrinking the leftover
padding to under 64 samples. Channel length gets reset to the full
chunk size at the start of each feed pass in case a previous
playback left it shortened.
Verified via PPSSPP: sceAudioSetChannelDataLen(7, 1024) then (7, 128)
for the tone's 68-sample remainder, onEnd still fires once.
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