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TKaraokeProcessor.cpp
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++
- //---------------------------------------------------------------------------
- #pragma hdrstop
- #include "TKaraokeProcessor.h"
- //---------------------------------------------------------------------------
- #pragma package(smart_init)
- //DONE: fix samplefreq
- TKaraokeProcessor::TKaraokeProcessor()
- {
- HighFilter.SetSampleFreq(44100);
- HighFilter.SetOrder(8);
- BassFilter.SetSampleFreq(44100);
- BassFilter.SetOrder(8);
- HighOn = false;
- BassOn = false;
- VocalPosition = 128;
- }
- //---------------------------------------------------------------------------
- void TKaraokeProcessor::SetBassPassThrough(int cutoff)
- {
- if (cutoff) //cutoff > 0
- {
- BassFilter.SetCutOff(cutoff);
- BassOn = true;
- }
- else BassOn = false;
- }
- //---------------------------------------------------------------------------
- void TKaraokeProcessor::SetHighPassThrough(int cutoff)
- {
- if (cutoff && cutoff < 22050) //cutoff > 0
- {
- HighFilter.SetCutOff(cutoff);
- HighOn = true;
- }
- else HighOn = false;
- }
- //---------------------------------------------------------------------------
- void TKaraokeProcessor::ProcessAudio(SampleData* sd, int nSamples)
- {
- SampleData* Filtered, *FilteredHi;
- if (BassOn)
- {
- Filtered = new SampleData[nSamples];
- BassFilter.Filter((char*)sd,(char*)Filtered,nSamples);
- }
- if(HighOn)
- {
- FilteredHi = new SampleData[nSamples];
- HighFilter.Filter((char*)sd,(char*)FilteredHi,nSamples);
- }
- if(BassOn && HighOn)
- {
- for(int i = 0;i < nSamples;++i)
- {
- int kardata = (int)sd[i].Channel1*(256-VocalPosition)
- - (int)sd[i].Channel2*VocalPosition;
- kardata /= 512;
- sd[i].Channel1 = kardata + Filtered[i].Channel1/2+FilteredHi[i].Channel1/2;
- sd[i].Channel2 = kardata + Filtered[i].Channel2/2+FilteredHi[i].Channel2/2;
- }
- delete Filtered;
- delete FilteredHi;
- }
- else
- if(BassOn)
- {
- for(int i = 0;i < nSamples;++i)
- {
- int kardata = (int)sd[i].Channel1*(256-VocalPosition)
- - (int)sd[i].Channel2*VocalPosition;
- kardata /= 512;
- sd[i].Channel1 = kardata + Filtered[i].Channel1/2;
- sd[i].Channel2 = kardata + Filtered[i].Channel2/2;
- }
- delete Filtered;
- }
- else
- if(HighOn)
- {
- for(int i = 0;i < nSamples;++i)
- {
- int kardata = (int)sd[i].Channel1*(256-VocalPosition)
- - (int)sd[i].Channel2*VocalPosition;
- kardata /= 512;
- sd[i].Channel1 = kardata + FilteredHi[i].Channel1/2;
- sd[i].Channel2 = kardata + FilteredHi[i].Channel2/2;
- }
- delete FilteredHi;
- }
- else
- for(int i = 0;i < nSamples;++i)
- {
- int kardata = (int)sd[i].Channel1*(256-VocalPosition)
- - (int)sd[i].Channel2*VocalPosition;
- kardata /= 512;
- sd[i].Channel1 = kardata;
- sd[i].Channel2 = kardata;
- }
- }
- //---------------------------------------------------------------------------
- void TKaraokeProcessor::SetSampleFreq(int sf)
- {
- BassFilter.SetSampleFreq(sf);
- HighFilter.SetSampleFreq(sf);
- };