simpleresize.h

来自「从FFMPEG转换而来的H264解码程序,VC下编译..」· C头文件 代码 · 共 68 行

#ifndef _SIMPLERESIZE_H_
#define _SIMPLERESIZE_H_

#include "simd.h"
#include "ffImgfmt.h"

class SimpleResize
{
public:
 struct PVideoFrame
 {
  unsigned char *ptr[4];
  stride_t pitch[4];
  int rowSize[4],height[4];
 };
 struct VideoInfo
 {
  int width,height;
  bool IsYUY2,IsYV12;
 };
private:
 enum
  {
   PLANAR_Y=0,
   PLANAR_U=1,
   PLANAR_V=2
  };
 int newwidth;
 int newheight;
 int oldwidth;
 int oldheight;
 double minslope;
 double hWarp;
 double vWarp;
 int* hControl;         // weighting masks, alternating dwords for Y & UV
                                                         // 1 qword for mask, 1 dword for src offset, 1 unused dword
 int* vOffsets;         // Vertical offsets of the source lines we will use
 int* vWeights;         // weighting masks, alternating dwords for Y & UV
 int* vOffsetsUV;               // Vertical offsets of the source lines we will use
 int* vWeightsUV;               // weighting masks, alternating dwords for Y & UV
 int* vWorkY;           // weighting masks 0Y0Y 0Y0Y...
 int* vWorkUV;          // weighting masks UVUV UVUV...
 bool SSE2enabled;
 bool SSEMMXenabled;
 bool Interlaced;
 bool DoYV12;

 //      void LoadFrame(int n,int offset, IScriptEnvironment* env);
 //void SimpleResize::InitTables();
 int InitTables(void);
 int InitTables_YV12(void);
 void GetFrame_YUY2(const PVideoFrame *src, PVideoFrame *dst, int Planar_Type);
 void GetFrame_YV12(const PVideoFrame *src, PVideoFrame *dst, int Planar_Type);

 static double WarpFactor(double z, double wFact);

 static __align16(const int64_t,YMask[2]);
 static __align16(const int64_t,FPround1[2]);
 static __align16(const int64_t,FPround2[2]);
public:
 bool ok;
 SimpleResize(const VideoInfo &vi,unsigned int _width, unsigned int _height, double _hWarp, double _vWarp, bool _Interlaced);
 ~SimpleResize();
 void GetFrame(const PVideoFrame *src,PVideoFrame *dst);
};

#endif