38 lines
908 B
C++
38 lines
908 B
C++
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#include "sound_server.h"
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#include <SDL/SDL.h>
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#include <iostream>
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void audio_callback(void* param, uint8_t* stream, int len) {
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sound_producer_1bit* producer = reinterpret_cast<sound_producer_1bit*>(param);
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for (int i = 0; i < len; i++) {
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*stream++ = producer->tick() ? 255 : 0;
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}
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}
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sound_server_1bit::sound_server_1bit(uint16_t samplerate,
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sound_producer_1bit& producer) {
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if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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std::cerr << "Init failed" << std::endl;
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exit(1);
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}
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SDL_AudioSpec as;
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as.freq = samplerate;
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as.format = AUDIO_U8;
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as.samples = 256;
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as.callback = audio_callback;
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as.userdata = reinterpret_cast<void*>(&producer);
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as.channels = 1;
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if (SDL_OpenAudio(&as, NULL) < 0) {
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std::cerr << "Unable to open audio" << std::endl;
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exit(1);
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}
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SDL_PauseAudio(0);
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}
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sound_server_1bit::~sound_server_1bit() { SDL_Quit(); }
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