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#ifndef MP_REFQUEUE_H_
#define MP_REFQUEUE_H_
#include <stdbool.h>
// A helper for deinterlacers which require past/future reference frames.
struct mp_refqueue;
struct mp_refqueue *mp_refqueue_alloc(void);
void mp_refqueue_free(struct mp_refqueue *q);
void mp_refqueue_set_refs(struct mp_refqueue *q, int past, int future);
void mp_refqueue_flush(struct mp_refqueue *q);
void mp_refqueue_add_input(struct mp_refqueue *q, struct mp_image *img);
bool mp_refqueue_need_input(struct mp_refqueue *q);
bool mp_refqueue_has_output(struct mp_refqueue *q);
void mp_refqueue_next(struct mp_refqueue *q);
void mp_refqueue_next_field(struct mp_refqueue *q);
struct mp_image *mp_refqueue_get(struct mp_refqueue *q, int pos);
enum {
MP_MODE_DEINT = (1 << 0), // deinterlacing enabled
MP_MODE_OUTPUT_FIELDS = (1 << 1), // output fields separately
MP_MODE_INTERLACED_ONLY = (1 << 2), // only deinterlace marked frames
};
void mp_refqueue_set_mode(struct mp_refqueue *q, int flags);
bool mp_refqueue_should_deint(struct mp_refqueue *q);
bool mp_refqueue_is_top_field(struct mp_refqueue *q);
bool mp_refqueue_top_field_first(struct mp_refqueue *q);
bool mp_refqueue_is_second_field(struct mp_refqueue *q);
struct mp_image *mp_refqueue_get_field(struct mp_refqueue *q, int pos);
#endif
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