Michael Giacomelli 8667af5cd7 atrac3: fix gain compensation at adjacent gain points ... applyVariableGain() applied the constant gain before a gain point in a do-while loop, so at least eight samples of it, even when there are none: when the point is at the start of the block or follows straight after the previous one. Every later gain point in the block was then eight samples late. This came in with the loop unrolling of 51a8be1a0f. Use a while loop, as ffmpeg does. Checked with perfsim (Sansa e200v1 build) against ffmpeg's decode. Over the whole of atrac3_lp2_132.oma the SNR goes from 45 to 51 dB and the worst frame from 14 to 21 dB; the right channel of a joint stereo RM file goes from 37 to 54 dB. What is left is a noise floor near -72 dBFS in every frame, from the 2 fractional bits the decoder works with. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>		2026-10-06 21:56:47 -04:00
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codecs	atrac3: fix gain compensation at adjacent gain points	2026-10-06 21:56:47 -04:00
dsp	dsp: Add missing .type <symbol>, %function to arm asm	2026-09-19 21:18:30 -04:00
metadata	Add "rbfs" prefix to native filesystem functions	2026-09-17 16:22:31 -04:00
test	warble: zero the mp3entry before reading metadata	2026-09-28 16:35:14 -04:00
platform.h	firmware: refactor CACHEALIGN_BITS/SIZE defines	2026-03-06 14:49:00 +00:00
rbcodec.make	rbcodec: Force use of -O2 for dsp code	2025-09-06 08:44:32 -04:00
rbcodecconfig-example.h	Enable setting of global output samplerate on certain targets.	2013-07-06 04:22:04 +02:00
rbcodecplatform-unix.h	Add "rbfs" prefix to native filesystem functions	2026-09-17 16:22:31 -04:00
SOURCES	rbcodec dsp: Move dsp_sample_io_configure() to its own file	2022-12-22 17:20:14 -05:00