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bug fixes in drc, audio, display

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kub 2020-01-14 22:49:03 +01:00
parent 8ac9ab7fcb
commit b9bc876c9c
14 changed files with 130 additions and 93 deletions
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6
pico/sound/mix_arm.S
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@ -176,10 +176,10 @@ m16_32_s2_no_unal2:
@ filter out DC offset
@ in=int_sample (max 20 bit), y=filter memory, r3=tmp
.macro DCfilt in y
rsb r3, \y, \in, asl #12 @ fixpoint 20.12
rsb r3, \y, \in, lsl #12 @ fixpoint 20.12
add \y, \y, r3, asr #13
sub \in, \in, \y, asr #12
sub \in, \in, \in, asr #2 @ reduce audio lvl some
sub r3, r3, r3, asr #2 @ reduce audio lvl some
asr \in, r3, #12
.endm
@ mix 32bit audio (with 16bits really used, upper bits indicate overflow) with normal 16 bit audio with left channel only