mlt_transition.h

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#ifndef MLT_TRANSITION_H
#define MLT_TRANSITION_H
 
#include "mlt_service.h"
#include <pthread.h>
 
struct mlt_transition_s
{
    struct mlt_service_s parent;
 
    void (*close)(mlt_transition);
 
    mlt_frame (*process)(mlt_transition, mlt_frame, mlt_frame);
 
    void *child;
 
    mlt_service producer;
 
    mlt_frame *frames;
    int held;
    pthread_mutex_t mutex;
};
 
#define MLT_TRANSITION_SERVICE(transition) (&(transition)->parent)
#define MLT_TRANSITION_PROPERTIES(transition) \
    MLT_SERVICE_PROPERTIES(MLT_TRANSITION_SERVICE(transition))
 
extern int mlt_transition_init(mlt_transition self, void *child);
extern mlt_transition mlt_transition_new();
extern mlt_service mlt_transition_service(mlt_transition self);
extern mlt_properties mlt_transition_properties(mlt_transition self);
extern int mlt_transition_connect(mlt_transition self,
                                  mlt_service producer,
                                  int a_track,
                                  int b_track);
extern void mlt_transition_set_in_and_out(mlt_transition self, mlt_position in, mlt_position out);
extern void mlt_transition_set_tracks(mlt_transition self, int a_track, int b_track);
extern int mlt_transition_get_a_track(mlt_transition self);
extern int mlt_transition_get_b_track(mlt_transition self);
extern mlt_position mlt_transition_get_in(mlt_transition self);
extern mlt_position mlt_transition_get_out(mlt_transition self);
extern mlt_position mlt_transition_get_length(mlt_transition self);
extern mlt_position mlt_transition_get_position(mlt_transition self, mlt_frame frame);
extern double mlt_transition_get_progress(mlt_transition self, mlt_frame frame);
extern double mlt_transition_get_progress_delta(mlt_transition self, mlt_frame frame);
extern mlt_frame mlt_transition_process(mlt_transition self, mlt_frame a_frame, mlt_frame b_frame);
extern void mlt_transition_close(mlt_transition self);
 
#endif