58 lines
1023 B
C
58 lines
1023 B
C
// ampler.h
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <SDL2/SDL.h>
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typedef int8_t s8;
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typedef int16_t s16;
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typedef int32_t s32;
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef float f32;
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typedef double f64;
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#define if if(
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#define while while(
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#define for for(
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#define do )
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#define or ||
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#define arraylen(a) (sizeof (a) / sizeof ((a)[0]))
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#define SAMPLE_RATE (44100)
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#define CHANNELS (2)
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#define FRAME_SAMPLES (SAMPLE_RATE / 60)
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typedef struct Sound_src Sound_src;
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struct Sound_src {
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s8 *tracks[CHANNELS];
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s32 len; // in samples
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f32 pos; // position in samples
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f32 speed; // in samples, per sample, can be negative
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enum { FREE = 0, STOPPED, PLAYING, LOOPING } state;
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};
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typedef struct Ampler_state Ampler_state;
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struct Ampler_state {
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u32 size; // in bytes, off this struct
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SDL_AudioDeviceID playdev;
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Sound_src sounds[64];
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s32 played_audio_last_frame;
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};
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void udp_init(Ampler_state *);
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void udp_frame(Ampler_state *);
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void udp_quit(Ampler_state *);
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