rockbox/lib
Michael Giacomelli e45936397e opus: filter the PLC excitation in place
At a CELT to hybrid mode switch, opus_decode_frame() runs CELT's pitch
PLC nested in the new frame, and celt_decode_lost() held a copy of up to
2 KB of excitation for celt_fir().  On stackOverflow.opus that overran
the 9 KB codec stack on native targets such as the e200v2.  Filtering in
place from the last sample down needs no copy; output is bit-identical.

Worst case over all 242 mode switches of stackOverflow.opus, measured
under qemu: 9140 -> 7676 bytes below opus_decode(), against 8912 left
for it on the e200v2.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: Iaa9f57182ad86ab76c81c55bea72aa517cc18230
2026-09-30 11:25:30 -04:00
..
arm_support chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
fixedpoint chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
libsetjmp libsetjmp: fix unpredictable behavior warning on ARM Cortex-M 2025-04-19 11:24:01 -04:00
microtar chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
mipsunwinder chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
rbcodec opus: filter the PLC excitation in place 2026-09-30 11:25:30 -04:00
skin_parser skin_parser: Fix regression in 0d5afa6d 2026-07-05 19:12:25 -04:00
tlsf chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
unwarminder chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
utf8proc utf8proc: Add utf8proc for normalizing UTF-8 strings 2026-03-01 08:26:00 -05:00