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TKaraokeProcessor.cpp
资源名称：bpsource_1_03.zip　[点击查看]
上传用户：anhe341234
上传日期：2021-04-11
资源大小：398k
文件大小：3k
源码类别：

Windows编程

开发平台：

Visual C++

TKaraokeProcessor.cpp：源码内容
  1. //---------------------------------------------------------------------------
  4. #pragma hdrstop
  6. #include "TKaraokeProcessor.h"
  9. //---------------------------------------------------------------------------
  11. #pragma package(smart_init)
  13. //DONE: fix samplefreq
  14. TKaraokeProcessor::TKaraokeProcessor()
  15. {
  16.   HighFilter.SetSampleFreq(44100);
  17.   HighFilter.SetOrder(8);
  20.   BassFilter.SetSampleFreq(44100);
  21.   BassFilter.SetOrder(8);
  22.   HighOn = false;
  23.   BassOn = false;
  24.   VocalPosition = 128;
  25. }
  26. //---------------------------------------------------------------------------
  28. void TKaraokeProcessor::SetBassPassThrough(int cutoff)
  29. {
  30.   if (cutoff) //cutoff > 0
  31.   {
  32.     BassFilter.SetCutOff(cutoff);
  33.     BassOn = true;
  34.   }
  35.   else BassOn = false;
  36. }
  37. //---------------------------------------------------------------------------
  39. void TKaraokeProcessor::SetHighPassThrough(int cutoff)
  40. {
  41.   if (cutoff && cutoff < 22050) //cutoff > 0
  42.   {
  43.     HighFilter.SetCutOff(cutoff);
  44.     HighOn = true;
  45.   }
  46.   else HighOn = false;
  47. }
  48. //---------------------------------------------------------------------------
  50. void TKaraokeProcessor::ProcessAudio(SampleData* sd, int nSamples)
  51. {
  52.   SampleData* Filtered, *FilteredHi;
  54.   if (BassOn)
  55.   {
  56.    Filtered = new SampleData[nSamples];
  58.    BassFilter.Filter((char*)sd,(char*)Filtered,nSamples);
  59.   }
  61.   if(HighOn)
  62.   {
  63.    FilteredHi = new SampleData[nSamples];
  65.    HighFilter.Filter((char*)sd,(char*)FilteredHi,nSamples);
  66.   }
  68.   if(BassOn && HighOn)
  69.   {
  70.     for(int i = 0;i < nSamples;++i)
  71.     {
  72.       int kardata = (int)sd[i].Channel1*(256-VocalPosition)
  73.         - (int)sd[i].Channel2*VocalPosition;
  75.       kardata /= 512;
  77.       sd[i].Channel1 = kardata + Filtered[i].Channel1/2+FilteredHi[i].Channel1/2;
  79.       sd[i].Channel2 = kardata + Filtered[i].Channel2/2+FilteredHi[i].Channel2/2;
  81.     }
  82.     delete Filtered;
  83.     delete FilteredHi;
  85.   }
  86.   else
  87.     if(BassOn)
  88.     {
  89.       for(int i = 0;i < nSamples;++i)
  90.       {
  91.         int kardata = (int)sd[i].Channel1*(256-VocalPosition)
  92.           - (int)sd[i].Channel2*VocalPosition;
  94.         kardata /= 512;
  96.         sd[i].Channel1 = kardata + Filtered[i].Channel1/2;
  98.         sd[i].Channel2 = kardata + Filtered[i].Channel2/2;
  100.       }
  101.       delete Filtered;
  102.     }
  103.     else
  104.       if(HighOn)
  105.       {
  106.         for(int i = 0;i < nSamples;++i)
  107.         {
  108.           int kardata = (int)sd[i].Channel1*(256-VocalPosition)
  109.             - (int)sd[i].Channel2*VocalPosition;
  111.           kardata /= 512;
  113.           sd[i].Channel1 = kardata + FilteredHi[i].Channel1/2;
  115.           sd[i].Channel2 = kardata + FilteredHi[i].Channel2/2;
  117.         }
  118.         delete FilteredHi;
  119.       }
  120.       else
  121.         for(int i = 0;i < nSamples;++i)
  122.         {
  123.           int kardata = (int)sd[i].Channel1*(256-VocalPosition)
  124.             - (int)sd[i].Channel2*VocalPosition;
  126.           kardata /= 512;
  128.           sd[i].Channel1 = kardata;
  130.           sd[i].Channel2 = kardata;
  131.         }
  132.       
  133. }
  134. //---------------------------------------------------------------------------
  136. void TKaraokeProcessor::SetSampleFreq(int sf)
  137. {
  138.   BassFilter.SetSampleFreq(sf);
  139.   HighFilter.SetSampleFreq(sf);
  140. };