47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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#ifndef DACPLAYER_H
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#define DACPLAYER_H
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#include "oneway.h"
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#include "gpio.h"
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#include "tone.h"
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#include "audio.h"
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#include "pcmdma.h"
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#include "pwmconfig.h"
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/// Třída, která hraje čistě na pozadí.
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class MidiPlayer : public OneWay {
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// Veřejné metody
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public:
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/// Konstruktor
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explicit MidiPlayer () noexcept;
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unsigned Send (uint16_t * const ptr, const unsigned len) override;
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void stop ();
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void pass ();
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protected:
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// Chráněné metody
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/// Obsluha tónu
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void ToneChange (void);
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/// Obsluha vzorku
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short nextSample (void);
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/// Generuj vzorek pro všechny tóny @return Vzorek
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short genSample (void) {
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int res = 0;
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for (unsigned int i=0; i<maxGens; i++) res += gens[i].step();
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// Pro jistotu omezíme - předejdeme chrastění
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if (res > maxValue) res = maxValue;
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if (res < minValue) res = minValue;
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return (res);
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}
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private:
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Tone gens[maxGens]; /// Generátory tónů
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GpioClass led, but;
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unsigned passcnt;
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volatile bool running;
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unsigned char const * melody;
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unsigned index;
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volatile int pause;
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};
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extern "C" const unsigned char * const scores[];
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#endif // DACPLAYER_H
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