63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
#include <math.h>
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#ifdef __MACH__
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#define PORTAUDIO
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#endif
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#ifdef __arm__
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#define ALSA
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#endif
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#ifdef PORTAUDIO
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#include <portaudio.h>
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#endif
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#define NUM_SECONDS (5)
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#define SAMPLE_RATE (48000)
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#define FRAMES_PER_BUFFER (64)
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#ifndef M_PI
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#define M_PI (3.14159265)
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#endif
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#ifdef PORTAUDIO
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typedef struct
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{
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uint32_t total_count;
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uint32_t up_count;
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uint32_t counter;
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uint32_t prev_freq;
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uint32_t freq;
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} paTestData;
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static int patestCallback( const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo* timeInfo,
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PaStreamCallbackFlags statusFlags,
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void *userData );
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void buzzer_set_freq(int frequency);
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void buzzer_beep(int frequency, int msecs);
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int buzzer_start(void);
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int buzzer_stop();
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void msleep(int d);
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int beep_test(void);
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#endif
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#ifdef ALSA
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#include <stdint.h>
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#include <alsa/asoundlib.h>
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#include <math.h>
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#define FRAMES (SAMPLE_RATE*2) //16384L
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int16_t buffer[FRAMES*2]; /* 16bit stereo sound samples */
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#endif
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// compatibility to old interface
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int beep(double freq_hz, double duration_sec);
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int beep_init();
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int beep_close();
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