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Optimize the implementations of gain and invgain.

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This commit is contained in:
Veikko Sariola 2020-05-16 23:01:16 +03:00
parent ac5b4dd496
commit 6a0a2fc36c
1 changed files with 27 additions and 25 deletions
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52
src/opcodes/effects.asm
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@ -84,18 +84,19 @@ su_op_hold_holding:
%if GAIN_ID > -1
SECT_TEXT(sugain)
EXPORT MANGLE_FUNC(su_op_gain,0)
%ifdef INCLUDE_STEREO_GAIN
jnc su_op_gain_mono
call su_stereo_filterhelper
%define INCLUDE_STEREO_FILTERHELPER
su_op_gain_mono:
%endif
fld dword [edx+su_gain_ports.gain] ; g x
fmulp st1, st0 ; g*x
ret
%ifdef INCLUDE_STEREO_GAIN
EXPORT MANGLE_FUNC(su_op_gain,0)
fld dword [edx+su_gain_ports.gain] ; g l (r)
jnc su_op_gain_mono
fmul st2, st0 ; g l r/g
su_op_gain_mono:
fmulp st1, st0 ; l/g (r/)
ret
%else
EXPORT MANGLE_FUNC(su_op_gain,0)
fmul dword [edx+su_gain_ports.gain]
ret
%endif
%endif ; GAIN_ID > -1
;-------------------------------------------------------------------------------
@ -104,19 +105,20 @@ su_op_gain_mono:
%if INVGAIN_ID > -1
SECT_TEXT(suingain)
EXPORT MANGLE_FUNC(su_op_invgain,0)
%ifdef INCLUDE_STEREO_INVGAIN
jnc su_op_invgain_mono
call su_stereo_filterhelper
%define INCLUDE_STEREO_FILTERHELPER
su_op_invgain_mono:
%endif
fld dword [edx+su_invgain_ports.invgain] ; g x
fdivp st1, st0 ; x/g
ret
%endif ; INVINVGAIN_ID > -1
%ifdef INCLUDE_STEREO_INVGAIN
EXPORT MANGLE_FUNC(su_op_invgain,0)
fld dword [edx+su_invgain_ports.invgain] ; g l (r)
jnc su_op_invgain_mono
fdiv st2, st0 ; g l r/g
su_op_invgain_mono:
fdivp st1, st0 ; l/g (r/)
ret
%else
EXPORT MANGLE_FUNC(su_op_invgain,0)
fdiv dword [edx+su_invgain_ports.invgain]
ret
%endif
%endif ; INVGAIN_ID > -1
;-------------------------------------------------------------------------------
; su_op_filter: perform low/high/band-pass filtering on the signal