void print_filter_helps(unsigned flags);
void generic_filter_pre_select(struct sched *s, void *context);
int decoder_execute(const char *cmd, unsigned sample_rate, unsigned channels,
void print_filter_helps(unsigned flags);
void generic_filter_pre_select(struct sched *s, void *context);
int decoder_execute(const char *cmd, unsigned sample_rate, unsigned channels,