CLExpr

Latest revision as of 04:20, 21 February 2023

[edit] Description

AviSynth Expr filter implemented in OpenCL.

Provides three functions:

• cl_expr - analogue of mt_lut
• cl_exprxy - analogue of mt_lutxy
• cl_exprxyz - analogue of mt_lutxyz

All expressions are calculated in runtime. 16-bit stacked clips are supported with the lsb parameter. Full set of masktools lut operators and functions is supported.

AviSynth+: self-registers as MT_MULTI_INSTANCE

[edit] Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• [x64]: AviSynth+
• Supported color formats: Y8, YV12, YV16, YV24

• Microsoft Visual C++ 2013 Redistributable Package (x86 / x64)

*** vcredist_x86.exe is required for CLExpr-x86

*** vcredist_x64.exe is required for CLExpr-x64

[edit] Syntax and Parameters

cl_expr (clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")

cl_exprxy (clip, clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")

cl_exprxyz (clip, clip, clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")

clip   =

Input clip.

string  yExpr = ""

string  uExpr = ""

string  vExpr = ""

Expression; full set of MaskTools2 LUT operators and functions is supported.

int  Y = 3

int  U = 2

int  V = 2

Plane processing:

• 1 : do nothing (garbage)
• 2 : copy
• 3 : process
• 4 : copy second
• 5 : copy third

string  chroma = ""

Chroma processing: "process" | "copy" | "copy second" | "copy third"

bool  lsb = false

Stack16 input and output, set to true to enable.

[edit] Examples

TODO

[edit] Changelog

Version      Date            Changes

v0.91         2014/10/25      - Expressions with integer constants should now work more often.
v0.09         2014/09/21      - Initial release

[edit] External Links

• GitHub - Source code repository.

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