mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-17 06:06:00 -06:00
62 lines
No EOL
1.7 KiB
C++
62 lines
No EOL
1.7 KiB
C++
#include "wav.h"
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NAMESPACE_UPP
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SampleFormat WavBitsToSampleFormat(int bits){
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switch(bits){
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case 8: return SND_UINT8;
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case 16: return SND_INT16;
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case 24: return SND_INT24;
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case 32: return SND_INT32;
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}
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return SND_UNKNOWN;
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}
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bool IsWavFile(const char* fn){
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RiffFile f(fn);
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if(f.filep()==NULL)
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return false;
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return strcmp(f.subType(),"WAVE")==0;
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}
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bool PlayWav(const char* fn){
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WaveFile f;
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if(!f.OpenRead(fn)) return false;
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if(f.IsCompressed()){
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// TODO ...
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LOG("Compressed wave files not supported yet");
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return false;
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}
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SoundStream s;
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SoundDevice dev=SoundSys().GetDefaultOutput();
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SampleFormat format=WavBitsToSampleFormat(f.GetBitsPerChannel());
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s.SetFlags(SND_NOCLIP)
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.SetFramesPerBuffer(512)
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.SetSampleRate(f.GetSampleRate());
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s.Open(Null,StreamParameters(dev,f.GetNumChannels(),format,dev.LowOutputLatency));
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s.Start();
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if(s.IsError()){
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LOG("Failed to open Sound Stream for file "<<fn<<"\nError: "<<s.GetError());
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return false;
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}
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int i=f.GetNumSamples(); // total length in frames
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const int len=1024; // length of our buffer (in frames)
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int n=min(s.WriteAvailable(),len); // how many frames can be written
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int bps=f.GetBytesPerSample(); // how many bytes makes up one frame
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int t=1000.0/f.GetSampleRate()/2.0*1024; // the sleep time depends on buffer size and sample rate
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Buffer<char> buf(len*bps);
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while(f.ReadRaw(~buf,n*bps)){
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s.Write(~buf,n); // write n frames
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i-=n;
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Sleep(t); // we can wait a while, before filing the buffer again
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n=min(s.WriteAvailable(),len);
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}
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s.Write(~buf,i); // write the leftovers
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s.Close();
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f.Close();
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return true;
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}
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END_UPP_NAMESPACE |