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#ifndef _TIL_H
#define _TIL_H
#include "til_fb.h"
#include "til_module_context.h"
#include "til_setup.h"
/* til_fragmenter_t 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 (*til_fragmenter_t)(til_module_context_t *context, const til_fb_fragment_t *fragment, unsigned number, til_fb_fragment_t *res_fragment);
/* til_frame_plan_t is what til_module_t.prepare_frame() populates to return a fragmenter and any flags/rules */
typedef struct til_frame_plan_t {
unsigned cpu_affinity:1; /* maintain a stable fragnum:cpu/thread mapping? (slower) */
til_fragmenter_t fragmenter; /* fragmenter to use in rendering the frame */
} til_frame_plan_t;
typedef struct til_module_t til_module_t;
typedef struct til_settings_t settings;
typedef struct til_setting_desc_t til_setting_desc_t;
typedef struct til_stream_t til_stream_t;
#define TIL_MODULE_OVERLAYABLE 1u /* module is appropriate for overlay use */
#define TIL_MODULE_HERMETIC 2u /* module doesn't work readily with other modules / requires manual settings */
#define TIL_MODULE_EXPERIMENTAL 4u /* module is buggy / unfinished */
struct til_module_t {
til_module_context_t * (*create_context)(const til_module_t *module, til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup);
void (*destroy_context)(til_module_context_t *context); /* destroy gets stream in context, but the render-related functions should always use the passed-in stream so it can potentially change */
void (*prepare_frame)(til_module_context_t *context, til_stream_t *stream, unsigned ticks, til_fb_fragment_t **fragment_ptr, til_frame_plan_t *res_frame_plan);
void (*render_fragment)(til_module_context_t *context, til_stream_t *stream, unsigned ticks, unsigned cpu, til_fb_fragment_t **fragment_ptr);
void (*finish_frame)(til_module_context_t *context, til_stream_t *stream, unsigned ticks, til_fb_fragment_t **fragment_ptr);
int (*setup)(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, til_setup_t **res_setup);
char *name;
char *description;
char *author;
unsigned flags;
};
int til_init(void);
void til_quiesce(void);
void til_shutdown(void);
const til_module_t * til_lookup_module(const char *name);
void til_get_modules(const til_module_t ***res_modules, size_t *res_n_modules);
void til_module_render(til_module_context_t *context, til_stream_t *stream, unsigned ticks, til_fb_fragment_t **fragment_ptr);
int til_module_create_context(const til_module_t *module, til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, const char *parent_path, til_setup_t *setup, til_module_context_t **res_context);
til_module_context_t * til_module_destroy_context(til_module_context_t *context, til_stream_t *stream);
int til_module_setup(til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, til_setup_t **res_setup);
int til_module_randomize_setup(const til_module_t *module, unsigned seed, til_setup_t **res_setup, char **res_arg);
int til_fragmenter_slice_per_cpu(til_module_context_t *context, const til_fb_fragment_t *fragment, unsigned number, til_fb_fragment_t *res_fragment);
int til_fragmenter_tile64(til_module_context_t *context, const til_fb_fragment_t *fragment, unsigned number, til_fb_fragment_t *res_fragment);
#endif
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