View source for Filter SDK/Two-Five Invert

The full source of the example plugin is presented below.

 #include "avisynth.h"
 
 class Invert : public GenericVideoFilter {
 public:
     Invert(PClip _child) : GenericVideoFilter(_child) {}
     PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* env);
 };
 
 PVideoFrame __stdcall Invert::GetFrame(int n, IScriptEnvironment* env) {
 
     PVideoFrame src = child->GetFrame(n, env);
     PVideoFrame dst = env->NewVideoFrame(vi);
                             
     const unsigned char* srcpY = src->GetReadPtr(PLANAR_Y);
     const unsigned char* srcpV = src->GetReadPtr(PLANAR_V);    
     const unsigned char* srcpU = src->GetReadPtr(PLANAR_U);
                     
     unsigned char* dstpY = dst->GetWritePtr(PLANAR_Y);
     unsigned char* dstpV = dst->GetWritePtr(PLANAR_V);    
     unsigned char* dstpU = dst->GetWritePtr(PLANAR_U);
                        
     const int src_pitchY = src->GetPitch(PLANAR_Y);
     const int src_pitchUV = src->GetPitch(PLANAR_V);
     const int dst_pitchY = dst->GetPitch(PLANAR_Y);
     const int dst_pitchUV = dst->GetPitch(PLANAR_U);
                           
     const int row_sizeY = dst->GetRowSize(PLANAR_Y); 
     // Could also be PLANAR_Y_ALIGNED which would return a mod16 rowsize    
     const int row_sizeUV = dst->GetRowSize(PLANAR_U); 
     // Could also be PLANAR_U_ALIGNED which would return a mod8 rowsize    
                         
     const int heightY = dst->GetHeight(PLANAR_Y);
     const int heightUV = dst->GetHeight(PLANAR_U);
                            
     for (int y = 0; y < heightY; y++) {
         for (int x = 0; x < row_sizeY; x++)
             dstpY[x] = srcpY[x] ^ 255;
         srcpY += src_pitchY;
         dstpY += dst_pitchY;
     }
                          
     for (int y = 0; y < heightUV; y++) {
         for (int x = 0; x < row_sizeUV; x++) {
             dstpU[x] = srcpU[x] ^ 255;
             dstpV[x] = srcpV[x] ^ 255;
         }
         srcpU += src_pitchUV;
         dstpU += dst_pitchUV;
         srcpV += src_pitchUV;
         dstpV += dst_pitchUV;
     }
     return dst;
 }
               
 AVSValue __cdecl Create_Invert(AVSValue args, void* user_data, IScriptEnvironment* env) {
     return new Invert(args[0].AsClip());
 }
                
 extern "C" __declspec(dllexport) const char* __stdcall AvisynthPluginInit2(IScriptEnvironment* env) {
     env->AddFunction("Invert", "c", Create_Invert, 0);
     return "`Invert' sample plugin";
 }

Back to AviSynth [[Filter_SDK/Two-Five_SDK|Two-Five SDK]].

[[Category:FilterSDK]]