Windows编程

开发平台：

Visual C++

CWSOLA.h：源码内容

							//---------------------------------------------------------------------------
#ifndef CWSOLAH
#define CWSOLAH
//---------------------------------------------------------------------------
#include "TReader.h"
#define BLOCK_ALIGN 4
enum TimeStretchMode {tsmWOLA, tsmWSOLA};
enum WSOLAXMode {wxmFast, wxmGood};
//typedef void (__stdcall  *FillFunc)(unsigned long bytes, Buffer& buffer_to_fill);
using AudioReader::TReader;
class CWOLA {
  enum WindowRamp{wRampUp,wRampDown};
  Buffer WorkBuffer;
  AudioReader::TReader* Reader;
  unsigned int copysize, WindowLength;
  int cbBuffer; //Output buffer size
  int SearchWin;
  int delta_target;
  double step_error; //Corrects for small errors in step size
  //For use in Xcorr and general speedup
  unsigned int XCorrLength,XCorrStart,XCorrEnd;
  std::vector<float> Window;
  float* XCorrWin;
  
  TimeStretchMode tsmode;
  WSOLAXMode wxmode;
  void SetUpWindow();
  void ApplyWindow(char* buffer, WindowRamp rampdir);
  void ApplyWindow(float* buffer, WindowRamp rampdir);
  void MixBuffers(char* dest, char* mix_in);
  void MixBuffers(float* dest, float* mix_in);
  int WSOLAProcessBlock(float Speed, char* outbuff);
  int WSOLAProcessBlock(float Speed, float* outbuff);
  int WOLAProcessBlock(float Speed, char* outbuff);
  int WOLAProcessBlock(float Speed, float* outbuff);
  int SearchBestXCorr(char* to_be_matched, char* searchbuffer);
  int SearchBestXCorr(float* to_be_matched, float* searchbuffer);
  int SearchBestXCorrFast(char* to_be_matched, char* searchbuffer);
  int SearchBestXCorrFast(float* to_be_matched, float* searchbuffer);
public:
  CWOLA(int wl, int cbbuf, int srch_win, AudioReader::TReader* areader) :
        WindowLength(wl),
        cbBuffer(cbbuf), SearchWin(srch_win), Reader(areader), XCorrWin(NULL),
        copysize(BLOCK_ALIGN*wl),tsmode(tsmWOLA),wxmode(wxmFast)
          {SetUpWindow();
           WorkBuffer.data.resize(3*wl*BLOCK_ALIGN,0);
           WorkBuffer.pos = WorkBuffer.data.begin() + 3*wl*BLOCK_ALIGN;
           delta_target = 0;
           step_error = 0;};
  int ProcessBlock(float Speed, char* outbuffer); //returns bytes used from source
  void SetMode(TimeStretchMode new_mode){tsmode = new_mode;};
  void SetMode(WSOLAXMode new_mode) {wxmode = new_mode;}
};
#endif

						