lemur/audio.c

#include <audio.h>
#include <stdio.h>

int audioInit(AudioContext *aud) {
    SDL_AudioSpec spec;
    spec.freq = 41700;
    spec.format = SDL_AUDIO_S16;
    spec.channels = 2;

    aud->stream = SDL_OpenAudioDeviceStream(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &spec, NULL, NULL);
    aud->paused = true;
    if (!aud->stream) {
        fprintf(stderr, "could not open audio device stream: %s\n", SDL_GetError());
        return -1;
    }
    return 0;
}

int audioUpdate(AudioContext *aud, void *data, uint32_t bytes) {
    if (!aud->stream) return -1;

    if (!SDL_PutAudioStreamData(aud->stream, data, bytes)) {
        fprintf(stderr, "could not write audio: %s\n", SDL_GetError());
        return -1;
    }

    if (aud->paused) {
        SDL_ResumeAudioDevice(SDL_GetAudioStreamDevice(aud->stream));
        aud->paused = false;
    }

    return 0;
}