View source for FTurn

{{FilterCat|External_filters|Adjustment_filters|Rotate}}
{{Filter3
| {{Authot/tp7}}
| v1.4
| [http://github.com/tp7/fturn/releases/download/1.4/fturn-25.dll fturn-25.dll] - [Avisynth 2.5.8]
[http://github.com/tp7/fturn/releases/download/1.4/fturn-26.dll fturn-26.dll] - [Avisynth 2.6]
| Rotation
| [http://opensource.org/licenses/MIT MIT] but binaries are [http://www.gnu.org/licenses/gpl-2.0.txt GPLv2]
|}}
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== Description ==
:Fast implementation of [[TurnLeft]](), [[TurnRight]]() and [[Turn180]]() AviSynth functions. {{Template:FuncDef|fturn180}} rotates a clip 180 degress, {{Template:FuncDef|fturnleft}} rotates 90 degrees counter clock wise, and {{Template:FuncDef|fturnright}} rotates 90 degrees clockwise.
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== Requirements ==
:- AviSynth 2.5.8 or [http://forum.doom9.org/showthread.php?t=168764 AviSynth 2.6.0 Alpha5] or later
:- [[FAQ_different_types_content#How_do_I_recognize_progressive.2C_interlaced.2C_telecined.2C_hybrid_and_blended_content.3F|Progressive]] input only 
:- Supported color formats: [[Y8]], [[YV12]], [[YV24]]
:: <span style="color:red">**</span> If you're using AviSynth 2.5.8, [[YV12]] will be the only colorspace supported.
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:- [[SSE2]] capable CPU
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== Syntax and Parameters ==
:{{Template:FuncDef|fturn180 (''clip'', ''bool'' "chroma")}}
:{{Template:FuncDef|fturnleft (''clip'', ''bool'' "chroma", ''bool'' "mt")}}
:{{Template:FuncDef|fturnright (''clip'', ''bool'' "chroma", ''bool'' "mt")}}
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::{{Par2|chroma|bool|true}}
:::When set to false chroma will not be processed.
:::This isuseful when chroma processing is not needed (almost often in anti aliasing scripts).  
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::{{Par2|mt|bool|true}}
:::[[FTurn]] is internally multithreaded; set to false to disable.
:::Chroma is processed in a separate thread with {{Template:FuncDef|mt}}=true (default).  
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== Examples ==
UnsharpHQ with default settings:
 [[AviSource]]("Blah.avi")
 UnsharpHQ(THRESHOLD=20, SHARPSTR=4.0, SMOOTH=0.5, SHOW=false)
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== Changelog ==
 Version      Date            Changes<br>
 v0.3         2011/02/21      - Initial public release
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== External Links ==
*[http://forum.doom9.org/showthread.php?t=168315 Doom9 Forum] - FTurn discussion.
*[http://github.com/tp7/fturn GitHub] - Source code repository.
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