mirror of
https://github.com/alsa-project/alsa-tools.git
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61 lines
1.2 KiB
NASM
61 lines
1.2 KiB
NASM
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;PZU
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;parts are taken from passthrough-audigy
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name "Output patch"
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include "emu_constants.asm"
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;inputs - and analog outputs
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Left IO
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Right IO
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LeftSurr IO
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RightSurr IO
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Center IO
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LFE IO
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; these are used for digital output
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DLeft IO
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DRight IO
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DLeftSurr IO
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DRightSurr IO
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DCenter IO
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DLFE IO
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enableL control 0,0,1
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enableR control 0,0,1
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tmp_a dyn
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tmp_b dyn
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mask con $ffff0000
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;simple copy to analog output
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macs Left, Left, C_0, C_0
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macs Right, Right, C_0, C_0
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macs LeftSurr, LeftSurr, C_0, C_0
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macs RightSurr, RightSurr, C_0, C_0
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macs Center, Center, C_0, C_0
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macs LFE, LFE, C_0, C_0
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;
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macs DLeft, Left, C_0, C_0
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macs DRight, Right, C_0, C_0
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macs C_0, enableL, C_0, C_0
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beq .endL
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macs tmp_a, DLeft, C_0, C_0
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ble .next_a
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acc3 tmp_a, C_0, C_65536, tmp_a
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.next_a
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and DLeft, tmp_a, mask
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.endL
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macs C_0, enableR, C_0, C_0
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beq .end
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macs tmp_b, DRight, C_0, C_0
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ble .next_b
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acc3 tmp_b, C_0, C_65536, tmp_b
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.next_b
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and DRight, tmp_b, mask
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.end
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macs DLeftSurr, LeftSurr, C_0, C_0
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macs DRightSurr, RightSurr, C_0, C_0
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macs DCenter, Center, C_0, C_0
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macs DLFE, LFE, C_0, C_0
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end
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