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#ifndef _ROTOTILLER_H
#define _ROTOTILLER_H
#include "fb.h"
/* rototiller_fragmenter produces fragments from an input fragment, num being the desired fragment for the current call.
* return value of 1 means a fragment has been produced, 0 means num is beyond the end of fragments. */
typedef int (*rototiller_fragmenter_t)(void *context, const fb_fragment_t *fragment, unsigned number, fb_fragment_t *res_fragment);
typedef struct settings_t settings;
typedef struct setting_desc_t setting_desc_t;
typedef struct knob_t knob_t;
typedef struct rototiller_module_t {
void * (*create_context)(unsigned ticks, unsigned n_cpus);
void (*destroy_context)(void *context);
void (*prepare_frame)(void *context, unsigned ticks, unsigned n_cpus, fb_fragment_t *fragment, rototiller_fragmenter_t *res_fragmenter);
void (*render_fragment)(void *context, unsigned ticks, unsigned cpu, fb_fragment_t *fragment);
void (*finish_frame)(void *context, unsigned ticks, fb_fragment_t *fragment);
int (*setup)(const settings_t *settings, setting_desc_t **next_setting);
size_t (*knobs)(void *context, knob_t **res_knobs);
char *name;
char *description;
char *author;
char *license;
} rototiller_module_t;
int rototiller_init(void);
void rototiller_quiesce(void);
void rototiller_shutdown(void);
const rototiller_module_t * rototiller_lookup_module(const char *name);
void rototiller_get_modules(const rototiller_module_t ***res_modules, size_t *res_n_modules);
void rototiller_module_render(const rototiller_module_t *module, void *context, unsigned ticks, fb_fragment_t *fragment);
int rototiller_module_create_context(const rototiller_module_t *module, unsigned ticks, void **res_context);
int rototiller_module_setup(settings_t *settings, setting_desc_t **next_setting);
#endif
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