src/modem.h


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#ifndef foomodemhfoo
#define foomodemhfoo

enum modem_state { MODEM_STATE_INIT, MODEM_STATE_AUDIO_SIMPLE, MODEM_STATE_AUDIO_SHBUF, MODEM_STATE_DONE };

#define MODEM_BUF_LEN (10*1024)

struct modem {
    char *dev;
    int fd;

    char *ouput_buf;
    size_t output_buf_len;
    
    char *input_buf;
    size_t input_buf_len;
    
    enum modem_state state;

    pid_t child_pid;

    struct timeval timeout;
};

struct modem *modem_open(const char *dev);
void modem_close(struct modem *m);

#endif