功能从C到Delphi

Question

我在delphi代码中创建了一个类似的函数.但它不会工作.转换它的正确方法是什么？

char* ReadSpeechFile(char* pFileName, int *nFileSize)
{
    char *szBuf, *pLinearPCM;   
    int nSize;
    FILE* fp;

    //read wave data
    fp = fopen(pFileName, "rb");
    if(fp == NULL)
        return NULL;
    fseek(fp, 0, SEEK_END);
    nSize = ftell(fp);

    //linear
    szBuf = (char *)calloc(nSize, sizeof(char));
    fseek(fp, 0, SEEK_SET);
    fread(szBuf, sizeof(char), nSize, fp);
    fclose(fp);

    *nFileSize = nSize;

    return szBuf;
}

Answer 1

我将其翻译成以下Delphi代码(未经测试):

function ReadSpeechFile(pFileName: PAnsiChar, var nFileSize: Integer): PAnsiChar;
var
 szBuf: PAnsiChar;
 nSize: Integer;
 fp: TFileStream;
begin
  fp := TFilestream.Create(pFileName, fmOpenRead);
  try
    nSize := fp.Size;
    GetMem(szBuf, nSize);
    fp.Read(szBuf^, nSize);
  finally
    fp.Free;
  end;
  nFileSize := nSize;
  Result := szBuf;
end;