104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
#define WIN32_LEAN_AND_MEAN
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#define WIN32_EXTRA_LEAN
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#include "windows.h"
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#include "mmsystem.h"
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#include "mmreg.h"
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#include "4klang.h"
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// define this if you have a multicore cpu and can spare ~15 bytes for realtime playback
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// undef for sound precalc
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#define USE_SOUND_THREAD
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////////////////////////////////////////////////
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// sound
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////////////////////////////////////////////////
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#define SAMPLE_RATE 44100
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#define MAX_SAMPLES SAMPLE_RATE*2*60*4
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#pragma bss_seg(".synthnothing")
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static float lpSoundBuffer[MAX_SAMPLES];
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static HWAVEOUT hWaveOut;
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/////////////////////////////////////////////////////////////////////////////////
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// initialized data
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/////////////////////////////////////////////////////////////////////////////////
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#pragma data_seg(".wavefmt")
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WAVEFORMATEX WaveFMT =
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{
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WAVE_FORMAT_IEEE_FLOAT,
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2, // channels
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SAMPLE_RATE, // samples per sec
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SAMPLE_RATE*4*2, // bytes per sec
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8, // block alignment;
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32, // bits per sample
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0 // extension not needed
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};
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#pragma data_seg(".wavehdr")
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WAVEHDR WaveHDR =
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{
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(LPSTR)lpSoundBuffer,
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MAX_SAMPLES*4,
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0,
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0,
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0,
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0,
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0,
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0
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};
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#pragma data_seg(".mmtime")
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MMTIME MMTime =
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{
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TIME_SAMPLES,
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0
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};
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/////////////////////////////////////////////////////////////////////////////////
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// Initialization
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/////////////////////////////////////////////////////////////////////////////////
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#ifdef USE_SOUND_THREAD
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#pragma code_seg(".sndthrd")
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DWORD WINAPI SoundThread( LPVOID lpParam )
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{
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_4klang_render(lpSoundBuffer);
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return 0;
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}
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#endif
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#pragma code_seg(".initsnd")
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extern "C" void InitSound()
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{
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#ifdef USE_SOUND_THREAD
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CreateThread(0, 0, SoundThread, 0, 0, 0);
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#else
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_4klang_render(lpSoundBuffer);
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#endif
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Sleep(15000);
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waveOutOpen ( &hWaveOut, WAVE_MAPPER, &WaveFMT, NULL, 0, CALLBACK_NULL );
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waveOutPrepareHeader( hWaveOut, &WaveHDR, sizeof(WaveHDR) );
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waveOutWrite ( hWaveOut, &WaveHDR, sizeof(WaveHDR) );
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}
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#pragma code_seg(".envelope")
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extern "C" float get_Envelope(int instrument)
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{
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return 0; //return (&_4klang_envelope_buffer)[((MMTime.u.sample >> 8) << 5) + 2*instrument];
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}
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#pragma code_seg(".time")
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extern "C" float get_Time()
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{
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waveOutGetPosition(hWaveOut, &MMTime, sizeof(MMTIME));
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return float(MMTime.u.sample) / SAMPLE_RATE;
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}
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#pragma code_seg(".sample")
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extern "C" int get_Sample()
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{
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waveOutGetPosition(hWaveOut, &MMTime, sizeof(MMTIME));
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return (MMTime.u.sample);
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}
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