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efl/src/modules/evas/engines/wayland_shm/evas_engine.c

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#include "evas_common.h"
#include "evas_private.h"
#include "Evas_Engine_Wayland_Shm.h"
#include "evas_engine.h"
#include "evas_swapbuf.h"
/* local structures */
typedef struct _Render_Engine Render_Engine;
struct _Render_Engine
{
Outbuf *ob;
Tilebuf *tb;
Tilebuf_Rect *rects;
Tilebuf_Rect *prev_rects[3];
Eina_Inlist *cur_rect;
short mode;
Eina_Bool end : 1;
Eina_Bool lost_back : 1;
/* function pointers for output buffer functions that we can
* override based on if we are swapping or not */
void (*outbuf_free)(Outbuf *ob);
void (*outbuf_reconfigure)(Outbuf *ob, int x, int y, int w, int h, unsigned int rotation, Outbuf_Depth depth, Eina_Bool alpha);
RGBA_Image *(*outbuf_update_region_new)(Outbuf *ob, int x, int y, int w, int h, int *cx, int *cy, int *cw, int *ch);
void (*outbuf_update_region_push)(Outbuf *ob, RGBA_Image *update, int x, int y, int w, int h);
void (*outbuf_update_region_free)(Outbuf *ob, RGBA_Image *update);
void (*outbuf_flush)(Outbuf *ob);
void (*outbuf_idle_flush)(Outbuf *ob);
};
/* local function prototypes */
static void *_output_engine_setup(int x, int y, int w, int h, unsigned int rotation, unsigned int depth, Eina_Bool destination_alpha, struct wl_shm *wl_shm, struct wl_surface *wl_surface, int try_swap);
static Tilebuf_Rect *_merge_rects(Tilebuf *tb, Tilebuf_Rect *r1, Tilebuf_Rect *r2, Tilebuf_Rect *r3);
/* engine function prototypes */
static void *eng_info(Evas *eo_evas EINA_UNUSED);
static void eng_info_free(Evas *eo_evas EINA_UNUSED, void *einfo);
static int eng_setup(Evas *eo_evas, void *einfo);
static void eng_output_free(void *data);
static void eng_output_resize(void *data, int w, int h);
static void eng_output_tile_size_set(void *data, int w, int h);
static void eng_output_redraws_rect_add(void *data, int x, int y, int w, int h);
static void eng_output_redraws_rect_del(void *data, int x, int y, int w, int h);
static void eng_output_redraws_clear(void *data);
static void *eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h, int *cx, int *cy, int *cw, int *ch);
static void eng_output_redraws_next_update_push(void *data, void *surface, int x, int y, int w, int h, Evas_Render_Mode render_mode);
static void eng_output_flush(void *data, Evas_Render_Mode render_mode);
static void eng_output_idle_flush(void *data);
/* local variables */
static Evas_Func func, pfunc;
/* external variables */
int _evas_engine_way_shm_log_dom = -1;
/* local functions */
static void *
_output_engine_setup(int x, int y, int w, int h, unsigned int rotation, unsigned int depth, Eina_Bool destination_alpha, struct wl_shm *wl_shm, struct wl_surface *wl_surface, int try_swap)
{
Render_Engine *re = NULL;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
/* try to allocate a new render engine */
if (!(re = calloc(1, sizeof(Render_Engine))))
return NULL;
/* try to create a new tilebuf first */
if (!(re->tb = evas_common_tilebuf_new(w, h)))
{
free(re);
return NULL;
}
/* set tile size for the tile buffer */
evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
if (try_swap)
{
if ((re->ob = evas_swapbuf_setup(x, y, w, h, rotation, depth,
destination_alpha, wl_shm,
wl_surface)))
{
re->ob->x = x;
re->ob->y = y;
re->outbuf_free = evas_swapbuf_free;
re->outbuf_reconfigure = evas_swapbuf_reconfigure;
re->outbuf_update_region_new = evas_swapbuf_update_region_new;
re->outbuf_update_region_push = evas_swapbuf_update_region_push;
re->outbuf_update_region_free = evas_swapbuf_update_region_free;
re->outbuf_flush = evas_swapbuf_flush;
re->outbuf_idle_flush = evas_swapbuf_idle_flush;
}
}
/* if creating an output buffer failed, then return NULL */
if (!re->ob)
{
if (re->tb) evas_common_tilebuf_free(re->tb);
free(re);
return NULL;
}
/* return allocated render engine */
return re;
}
static Tilebuf_Rect *
_merge_rects(Tilebuf *tb, Tilebuf_Rect *r1, Tilebuf_Rect *r2, Tilebuf_Rect *r3)
{
Tilebuf_Rect *r, *rects;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if (r1)
{
EINA_INLIST_FOREACH(EINA_INLIST_GET(r1), r)
evas_common_tilebuf_add_redraw(tb, r->x, r->y, r->w, r->h);
}
if (r2)
{
EINA_INLIST_FOREACH(EINA_INLIST_GET(r2), r)
evas_common_tilebuf_add_redraw(tb, r->x, r->y, r->w, r->h);
}
if (r2)
{
EINA_INLIST_FOREACH(EINA_INLIST_GET(r3), r)
evas_common_tilebuf_add_redraw(tb, r->x, r->y, r->w, r->h);
}
rects = evas_common_tilebuf_get_render_rects(tb);
/*
// bounding box -> make a bounding box single region update of all regions.
// yes we could try and be smart and figure out size of regions, how far
// apart etc. etc. to try and figure out an optimal "set". this is a tradeoff
// between multiple update regions to render and total pixels to render.
if (rects)
{
px1 = rects->x; py1 = rects->y;
px2 = rects->x + rects->w; py2 = rects->y + rects->h;
EINA_INLIST_FOREACH(EINA_INLIST_GET(rects), r)
{
if (r->x < x1) px1 = r->x;
if (r->y < y1) py1 = r->y;
if ((r->x + r->w) > x2) px2 = r->x + r->w;
if ((r->y + r->h) > y2) py2 = r->y + r->h;
}
evas_common_tilebuf_free_render_rects(rects);
rects = calloc(1, sizeof(Tilebuf_Rect));
if (rects)
{
rects->x = px1;
rects->y = py1;
rects->w = px2 - px1;
rects->h = py2 - py1;
}
}
*/
evas_common_tilebuf_clear(tb);
return rects;
}
/* engine functions */
static void *
eng_info(Evas *eo_evas EINA_UNUSED)
{
Evas_Engine_Info_Wayland_Shm *info;
/* try to allocate space for engine info */
if (!(info = calloc(1, sizeof(Evas_Engine_Info_Wayland_Shm))))
return NULL;
/* fill in default engine info fields */
info->magic.magic = rand();
info->render_mode = EVAS_RENDER_MODE_BLOCKING;
/* return allocated engine info */
return info;
}
static void
eng_info_free(Evas *eo_evas EINA_UNUSED, void *einfo)
{
Evas_Engine_Info_Wayland_Shm *info;
/* try to free previously allocated engine info */
if ((info = (Evas_Engine_Info_Wayland_Shm *)einfo))
free(info);
}
static int
eng_setup(Evas *eo_evas, void *einfo)
{
Evas_Engine_Info_Wayland_Shm *info;
Evas_Public_Data *epd;
Render_Engine *re = NULL;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
/* try to cast the engine info to our engine info */
if (!(info = (Evas_Engine_Info_Wayland_Shm *)einfo))
return 0;
/* try to get evas public data from the canvas */
if (!(epd = eo_data_get(eo_evas, EVAS_CLASS)))
return 0;
/* test for valid engine output */
if (!(re = epd->engine.data.output))
{
static int try_swap = -1;
/* NB: If we have no valid output then assume we have not been
* initialized yet and call any needed common init routines */
evas_common_cpu_init();
evas_common_blend_init();
evas_common_image_init();
evas_common_convert_init();
evas_common_scale_init();
evas_common_rectangle_init();
evas_common_polygon_init();
evas_common_line_init();
evas_common_font_init();
evas_common_draw_init();
evas_common_tilebuf_init();
if (try_swap == -1)
{
/* check for env var to see if we should try swapping */
if (getenv("EVAS_NO_WAYLAND_SWAPBUF")) try_swap = 0;
else try_swap = 1;
}
if (!(re =
_output_engine_setup(info->info.edges.x, info->info.edges.y,
epd->output.w, epd->output.h,
info->info.rotation, info->info.depth,
info->info.destination_alpha,
info->info.wl_shm, info->info.wl_surface,
try_swap)))
return 0;
}
else
{
int ponebuf = 0;
if ((re) && (re->ob)) ponebuf = re->ob->onebuf;
/* we have an existing render engine */
if (re->ob) re->outbuf_free(re->ob);
if ((re->ob = evas_swapbuf_setup(info->info.edges.x,
info->info.edges.y,
epd->output.w, epd->output.h,
info->info.rotation,
info->info.depth,
info->info.destination_alpha,
info->info.wl_shm,
info->info.wl_surface)))
{
re->outbuf_free = evas_swapbuf_free;
re->outbuf_reconfigure = evas_swapbuf_reconfigure;
re->outbuf_update_region_new = evas_swapbuf_update_region_new;
re->outbuf_update_region_push = evas_swapbuf_update_region_push;
re->outbuf_update_region_free = evas_swapbuf_update_region_free;
re->outbuf_flush = evas_swapbuf_flush;
re->outbuf_idle_flush = evas_swapbuf_idle_flush;
}
if ((re) && (re->ob)) re->ob->onebuf = ponebuf;
}
/* reassign render engine to output */
epd->engine.data.output = re;
if (!epd->engine.data.output) return 0;
if (!epd->engine.data.context)
{
epd->engine.data.context =
epd->engine.func->context_new(epd->engine.data.output);
}
/* return success */
return 1;
}
static void
eng_output_free(void *data)
{
Render_Engine *re;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if ((re = data))
{
re->outbuf_free(re->ob);
evas_common_tilebuf_free(re->tb);
if (re->rects)
evas_common_tilebuf_free_render_rects(re->rects);
if (re->prev_rects[0])
evas_common_tilebuf_free_render_rects(re->prev_rects[0]);
if (re->prev_rects[1])
evas_common_tilebuf_free_render_rects(re->prev_rects[1]);
if (re->prev_rects[2])
evas_common_tilebuf_free_render_rects(re->prev_rects[2]);
free(re);
}
evas_common_font_shutdown();
evas_common_image_shutdown();
}
static void
eng_output_resize(void *data, int w, int h)
{
Render_Engine *re;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if (!(re = (Render_Engine *)data)) return;
re->outbuf_reconfigure(re->ob, re->ob->x, re->ob->y, w, h,
re->ob->rotation, re->ob->depth,
re->ob->priv.destination_alpha);
evas_common_tilebuf_free(re->tb);
if ((re->tb = evas_common_tilebuf_new(w, h)))
evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
}
static void
eng_output_tile_size_set(void *data, int w, int h)
{
Render_Engine *re;
if (!(re = (Render_Engine *)data)) return;
if (re->tb) evas_common_tilebuf_set_tile_size(re->tb, w, h);
}
static void
eng_output_redraws_rect_add(void *data, int x, int y, int w, int h)
{
Render_Engine *re;
if (!(re = (Render_Engine *)data)) return;
evas_common_tilebuf_add_redraw(re->tb, x, y, w, h);
}
static void
eng_output_redraws_rect_del(void *data, int x, int y, int w, int h)
{
Render_Engine *re;
if (!(re = (Render_Engine *)data)) return;
if (re->tb) evas_common_tilebuf_del_redraw(re->tb, x, y, w, h);
}
static void
eng_output_redraws_clear(void *data)
{
Render_Engine *re;
if (!(re = (Render_Engine *)data)) return;
if (re->tb) evas_common_tilebuf_clear(re->tb);
}
static void *
eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h, int *cx, int *cy, int *cw, int *ch)
{
Render_Engine *re;
RGBA_Image *surface;
Tilebuf_Rect *rect;
Eina_Bool first_rect = EINA_FALSE;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
#define CLEAR_PREV_RECTS(x) \
do { \
if (re->prev_rects[x]) \
evas_common_tilebuf_free_render_rects(re->prev_rects[x]); \
re->prev_rects[x] = NULL; \
} while (0)
re = (Render_Engine *)data;
if (re->end)
{
re->end = 0;
return NULL;
}
if (!re->rects)
{
re->mode = evas_swapbuf_state_get(re->ob);
re->rects = evas_common_tilebuf_get_render_rects(re->tb);
if (re->rects)
{
if (re->lost_back)
{
/* if we lost our backbuffer since the last frame redraw all */
re->lost_back = 0;
evas_common_tilebuf_add_redraw(re->tb, 0, 0, re->ob->w, re->ob->h);
evas_common_tilebuf_free_render_rects(re->rects);
re->rects = evas_common_tilebuf_get_render_rects(re->tb);
}
/* ensure we get rid of previous rect lists we dont need if mode
* changed/is appropriate */
evas_common_tilebuf_clear(re->tb);
CLEAR_PREV_RECTS(2);
re->prev_rects[2] = re->prev_rects[1];
re->prev_rects[1] = re->prev_rects[0];
re->prev_rects[0] = re->rects;
re->rects = NULL;
switch (re->mode)
{
case MODE_FULL:
case MODE_COPY: // no prev rects needed
re->rects =
_merge_rects(re->tb, re->prev_rects[0], NULL, NULL);
break;
case MODE_DOUBLE: // double mode - only 1 level of prev rect
re->rects =
_merge_rects(re->tb, re->prev_rects[0], re->prev_rects[1], NULL);
break;
case MODE_TRIPLE: // keep all
re->rects =
_merge_rects(re->tb, re->prev_rects[0], re->prev_rects[1], re->prev_rects[2]);
break;
default:
break;
}
first_rect = EINA_TRUE;
}
evas_common_tilebuf_clear(re->tb);
re->cur_rect = EINA_INLIST_GET(re->rects);
}
if (!re->cur_rect) return NULL;
rect = (Tilebuf_Rect *)re->cur_rect;
if (re->rects)
{
switch (re->mode)
{
case MODE_COPY:
case MODE_DOUBLE:
case MODE_TRIPLE:
rect = (Tilebuf_Rect *)re->cur_rect;
*x = rect->x;
*y = rect->y;
*w = rect->w;
*h = rect->h;
*cx = rect->x;
*cy = rect->y;
*cw = rect->w;
*ch = rect->h;
re->cur_rect = re->cur_rect->next;
break;
case MODE_FULL:
re->cur_rect = NULL;
if (x) *x = 0;
if (y) *y = 0;
if (w) *w = re->ob->w;
if (h) *h = re->ob->h;
if (cx) *cx = 0;
if (cy) *cy = 0;
if (cw) *cw = re->ob->w;
if (ch) *ch = re->ob->h;
break;
default:
break;
}
if (first_rect)
{
// do anything needed for the first frame
}
surface =
re->outbuf_update_region_new(re->ob,
*x, *y, *w, *h,
cx, cy, cw, ch);
if (!re->cur_rect) re->end = EINA_TRUE;
return surface;
}
return NULL;
}
static void
eng_output_redraws_next_update_push(void *data, void *surface, int x, int y, int w, int h, Evas_Render_Mode render_mode)
{
Render_Engine *re;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if (render_mode == EVAS_RENDER_MODE_ASYNC_INIT) return;
if (!(re = (Render_Engine *)data)) return;
#if defined(BUILD_PIPE_RENDER)
evas_common_pipe_map_begin(surface);
#endif
re->outbuf_update_region_push(re->ob, surface, x, y, w, h);
re->outbuf_update_region_free(re->ob, surface);
evas_common_cpu_end_opt();
}
static void
eng_output_flush(void *data, Evas_Render_Mode render_mode)
{
Render_Engine *re;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if (render_mode == EVAS_RENDER_MODE_ASYNC_INIT) return;
if (!(re = (Render_Engine *)data)) return;
re->outbuf_flush(re->ob);
if (re->rects)
{
evas_common_tilebuf_free_render_rects(re->rects);
re->rects = NULL;
}
}
static void
eng_output_idle_flush(void *data)
{
Render_Engine *re;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
if (!(re = (Render_Engine *)data)) return;
re->outbuf_idle_flush(re->ob);
}
/* module functions */
static int
module_open(Evas_Module *em)
{
/* check for valid evas module */
if (!em) return 0;
/* try to create our logging domain */
_evas_engine_way_shm_log_dom =
eina_log_domain_register("evas-wayland_shm", EVAS_DEFAULT_LOG_COLOR);
if (_evas_engine_way_shm_log_dom < 0)
{
/* creating the logging domain failed. notify user */
EINA_LOG_ERR("Could not create a module log domain.");
/* return failure */
return 0;
}
/* try to inherit base functions from the software generic engine */
if (!_evas_module_engine_inherit(&pfunc, "software_generic"))
return 0;
/* copy base functions from the software_generic engine */
func = pfunc;
/* override any engine specific functions that we provide */
#define ORD(f) EVAS_API_OVERRIDE(f, &func, eng_)
ORD(info);
ORD(info_free);
ORD(setup);
ORD(output_free);
ORD(output_resize);
ORD(output_tile_size_set);
ORD(output_redraws_rect_add);
ORD(output_redraws_rect_del);
ORD(output_redraws_clear);
ORD(output_redraws_next_update_get);
ORD(output_redraws_next_update_push);
ORD(output_flush);
ORD(output_idle_flush);
/* advertise out our own api */
em->functions = (void *)(&func);
/* return success */
return 1;
}
static void
module_close(Evas_Module *em EINA_UNUSED)
{
/* if we have the log domain, unregister it */
if (_evas_engine_way_shm_log_dom > -1)
eina_log_domain_unregister(_evas_engine_way_shm_log_dom);
}
static Evas_Module_Api evas_modapi =
{
EVAS_MODULE_API_VERSION, "wayland_shm", "none", {module_open, module_close}
};
EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_ENGINE, engine, wayland_shm);
#ifndef EVAS_STATIC_BUILD_WAYLAND_SHM
EVAS_EINA_MODULE_DEFINE(engine, wayland_shm);
#endif
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