271 lines
6.5 KiB
C
271 lines
6.5 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "Ecore_Wl2.h"
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#include "ecore_wl2_internal.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "linux-dmabuf-unstable-v1-client-protocol.h"
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#define MAX_BUFFERS 4
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#define QUEUE_TRIM_DURATION 100
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int ECORE_WL2_SURFACE_DMABUF = 0;
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typedef struct _Ecore_Wl2_Dmabuf_Private
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{
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Ecore_Wl2_Buffer *current;
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Eina_List *buffers;
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int unused_duration;
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} Ecore_Wl2_Dmabuf_Private;
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static void *
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_evas_dmabuf_surface_setup(Ecore_Wl2_Window *win)
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{
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Ecore_Wl2_Dmabuf_Private *priv;
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Ecore_Wl2_Display *ewd;
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Ecore_Wl2_Buffer_Type types = 0;
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priv = calloc(1, sizeof(*priv));
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if (!priv) return NULL;
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ewd = ecore_wl2_window_display_get(win);
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if (ecore_wl2_display_shm_get(ewd))
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types |= ECORE_WL2_BUFFER_SHM;
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if (ecore_wl2_display_dmabuf_get(ewd))
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types |= ECORE_WL2_BUFFER_DMABUF;
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if (!ecore_wl2_buffer_init(ewd, types))
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{
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free(priv);
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return NULL;
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}
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return priv;
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}
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static void
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_evas_dmabuf_surface_reconfigure(Ecore_Wl2_Surface *s EINA_UNUSED, void *priv_data, int w, int h, uint32_t flags EINA_UNUSED, Eina_Bool alpha EINA_UNUSED)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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Eina_List *l, *tmp;
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// Eina_Bool alpha_change;
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p = priv_data;
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if ((!w) || (!h)) return;
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// alpha_change = ecore_wl2_surface_alpha_get(s) != alpha;
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EINA_LIST_FOREACH_SAFE(p->buffers, l, tmp, b)
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{
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/* This would be nice, but requires a partial create to follow,
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and that partial create is buffer type specific.
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if (!alpha_change && ecore_wl2_buffer_fit(b, w, h))
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continue;
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*/
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ecore_wl2_buffer_destroy(b);
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p->buffers = eina_list_remove_list(p->buffers, l);
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}
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}
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static void *
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_evas_dmabuf_surface_data_get(Ecore_Wl2_Surface *s EINA_UNUSED, void *priv_data, int *w, int *h)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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void *ptr;
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int stride;
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p = priv_data;
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b = p->current;
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if (!b) return NULL;
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ptr = ecore_wl2_buffer_map(b, NULL, h, &stride);
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if (!ptr) return NULL;
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/* We return stride/bpp because it may not match the allocated
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* width. evas will figure out the clipping
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*/
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if (w) *w = stride / 4;
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return ptr;
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}
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static Ecore_Wl2_Buffer *
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_evas_dmabuf_surface_wait(Ecore_Wl2_Surface *s, Ecore_Wl2_Dmabuf_Private *p)
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{
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Ecore_Wl2_Buffer *b, *best = NULL;
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Eina_List *l;
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int best_age = -1;
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int age;
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int num_required = 1, num_allocated = 0;
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EINA_LIST_FOREACH(p->buffers, l, b)
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{
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num_allocated++;
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if (ecore_wl2_buffer_busy_get(b))
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{
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num_required++;
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continue;
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}
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age = ecore_wl2_buffer_age_get(b);
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if (age > best_age)
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{
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best = b;
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best_age = age;
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}
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}
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if (num_required < num_allocated)
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p->unused_duration++;
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else
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p->unused_duration = 0;
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/* If we've had unused buffers for longer than QUEUE_TRIM_DURATION, then
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* destroy the oldest buffer (currently in best) and recursively call
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* ourself to get the next oldest.
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*/
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if (best && (p->unused_duration > QUEUE_TRIM_DURATION))
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{
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p->unused_duration = 0;
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p->buffers = eina_list_remove(p->buffers, best);
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ecore_wl2_buffer_destroy(best);
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best = _evas_dmabuf_surface_wait(s, p);
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}
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if (!best && (eina_list_count(p->buffers) < MAX_BUFFERS))
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{
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best = ecore_wl2_surface_buffer_create(s);
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/* Start at -1 so it's age is incremented to 0 for first draw */
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ecore_wl2_buffer_age_set(best, -1);
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p->buffers = eina_list_append(p->buffers, best);
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}
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return best;
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}
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static int
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_evas_dmabuf_surface_assign(Ecore_Wl2_Surface *s, void *priv_data)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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Eina_List *l;
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p = priv_data;
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p->current = _evas_dmabuf_surface_wait(s, p);
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if (!p->current)
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{
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/* Should be unreachable and will result in graphical
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* anomalies - we should probably blow away all the
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* existing buffers and start over if we actually
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* see this happen...
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*/
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// WRN("No free DMAbuf buffers, dropping a frame");
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EINA_LIST_FOREACH(p->buffers, l, b)
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ecore_wl2_buffer_age_set(b, 0);
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return 0;
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}
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EINA_LIST_FOREACH(p->buffers, l, b)
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ecore_wl2_buffer_age_inc(b);
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return ecore_wl2_buffer_age_get(p->current);
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}
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static void
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_evas_dmabuf_surface_post(Ecore_Wl2_Surface *s, void *priv_data, Eina_Rectangle *rects, unsigned int count)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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Ecore_Wl2_Window *win;
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struct wl_buffer *wlb;
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p = priv_data;
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b = p->current;
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if (!b) return;
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ecore_wl2_buffer_unlock(b);
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p->current = NULL;
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ecore_wl2_buffer_busy_set(b);
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ecore_wl2_buffer_age_set(b, 0);
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win = ecore_wl2_surface_window_get(s);
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wlb = ecore_wl2_buffer_wl_buffer_get(b);
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ecore_wl2_window_buffer_attach(win, wlb, 0, 0, EINA_FALSE);
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ecore_wl2_window_damage(win, rects, count);
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ecore_wl2_window_commit(win, EINA_TRUE);
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}
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static void
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_evas_dmabuf_surface_destroy(Ecore_Wl2_Surface *s EINA_UNUSED, void *priv_data)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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p = priv_data;
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EINA_LIST_FREE(p->buffers, b)
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ecore_wl2_buffer_destroy(b);
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free(p);
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}
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static void
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_evas_dmabuf_surface_flush(Ecore_Wl2_Surface *surface EINA_UNUSED, void *priv_data, Eina_Bool purge)
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{
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Ecore_Wl2_Dmabuf_Private *p;
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Ecore_Wl2_Buffer *b;
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p = priv_data;
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EINA_LIST_FREE(p->buffers, b)
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{
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if (purge || !ecore_wl2_buffer_busy_get(b))
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{
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if (p->current == b)
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p->current = NULL;
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ecore_wl2_buffer_destroy(b);
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}
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}
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}
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static Ecore_Wl2_Surface_Interface dmabuf_smanager =
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{
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.version = 1,
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.setup = _evas_dmabuf_surface_setup,
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.destroy = _evas_dmabuf_surface_destroy,
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.reconfigure = _evas_dmabuf_surface_reconfigure,
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.data_get = _evas_dmabuf_surface_data_get,
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.assign = _evas_dmabuf_surface_assign,
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.post = _evas_dmabuf_surface_post,
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.flush = _evas_dmabuf_surface_flush
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};
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Eina_Bool
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ecore_wl2_surface_module_dmabuf_init(void)
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{
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ECORE_WL2_SURFACE_DMABUF = ecore_wl2_surface_manager_add(&dmabuf_smanager);
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if (ECORE_WL2_SURFACE_DMABUF < 1)
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return EINA_FALSE;
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return EINA_TRUE;
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}
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void
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ecore_wl2_surface_module_dmabuf_shutdown(void)
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{
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ecore_wl2_surface_manager_del(&dmabuf_smanager);
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}
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EINA_MODULE_INIT(ecore_wl2_surface_module_dmabuf_init);
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EINA_MODULE_SHUTDOWN(ecore_wl2_surface_module_dmabuf_shutdown);
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