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/alsa_mixer_noheader.c Secret

Created December 1, 2017 13:23
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  1. @invalid-email-address Anonymous created this gist Dec 1, 2017.
    43 changes: 43 additions & 0 deletions alsa_mixer_noheader.c
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,43 @@
    int printf(char*, ...);
    int snd_mixer_open(void**, int);
    int snd_mixer_attach(void* mixer, char*);
    int snd_mixer_selem_register(void*, void*, void**);
    int snd_mixer_load(void* mixer);
    void* snd_mixer_first_elem(void*);
    void* snd_mixer_elem_next(void*);
    char *snd_mixer_selem_get_name(void*);
    int snd_mixer_selem_get_playback_volume_range(void*, long*, long*);
    int snd_mixer_close(void*);
    char* snd_mixer_selem_get_name(void*);
    int snd_mixer_selem_set_playback_volume_all(void*, long);

    int main()
    {
    void* handle;
    void* elem;

    snd_mixer_open(&handle, 0);
    snd_mixer_attach(handle, "default");
    snd_mixer_selem_register(handle, 0, 0);
    snd_mixer_load(handle);

    elem = snd_mixer_first_elem(handle);

    while (elem)
    {
    long min, max;

    snd_mixer_selem_get_playback_volume_range(
    elem, &min, &max
    );

    snd_mixer_selem_set_playback_volume_all(elem, max);
    printf("%s\n", snd_mixer_selem_get_name(elem));

    elem = snd_mixer_elem_next(elem);
    }

    snd_mixer_close(handle);

    return 0;
    }