From 41c25aac6384e6e429a51ace166fffcf219efeca Mon Sep 17 00:00:00 2001
From: Berke Güzel <wenekar1@gmail.com>
Date: Mon, 12 Oct 2026 15:23:19 +0300
Subject: Unify surface input queue, frame clock, and optimize scaling and
 timers

---
 src/common/backend.c | 29 ++++++++++++++++++++++-------
 src/common/backend.h |  5 +++++
 src/common/loop.c    | 17 ++++++++++-------
 3 files changed, 37 insertions(+), 14 deletions(-)

(limited to 'src')

diff --git a/src/common/backend.c b/src/common/backend.c
index cab1dce..ccb9c27 100644
--- a/src/common/backend.c
+++ b/src/common/backend.c
@@ -179,6 +179,7 @@ void yasl_surface_destroy(struct yasl_surface *s)
     if (!s || !s->display->ops->surface_destroy)
         return;
     yasl_surface_clear_timers(s);
+    input_queue_clear(&s->input);
     s->display->ops->surface_destroy(s);
 }
 
@@ -244,9 +245,11 @@ bool yasl_surface_present(struct yasl_surface *s, const struct yasl_framebuffer
 
 bool yasl_surface_input_poll(struct yasl_surface *s, struct yasl_input_event *ev)
 {
-    if (!s || !ev || !s->display->ops->surface_input_poll)
-        return 0;
-    return s->display->ops->surface_input_poll(s, ev);
+    if (!s || !ev)
+        return false;
+    if (s->display && s->display->ops && s->display->ops->surface_input_poll)
+        return s->display->ops->surface_input_poll(s, ev);
+    return input_queue_pop(&s->input, ev);
 }
 
 struct yasl_geometry yasl_surface_geometry(const struct yasl_surface *s)
@@ -269,16 +272,28 @@ uint32_t yasl_surface_state(const struct yasl_surface *s)
 
 struct yasl_timing yasl_surface_timing(const struct yasl_surface *s)
 {
-    if (!s || !s->display->ops->surface_timing)
+    if (!s)
         return (struct yasl_timing){0};
-    return s->display->ops->surface_timing(s);
+    if (s->display && s->display->ops && s->display->ops->surface_timing)
+        return s->display->ops->surface_timing(s);
+    struct yasl_timing t = {
+        .refresh_ns = s->clock.refresh_ns,
+        .last_present_ns = s->clock.last_present_ns,
+        .next_present_ns = yasl_clock_next_present_ns(&s->clock),
+        .frames_skipped = s->frames_skipped,
+        .source = s->clock.source,
+    };
+    yasl_clock_resize_stats(&s->clock, &t.resize);
+    return t;
 }
 
 uint64_t yasl_surface_frame_time_ns(struct yasl_surface *s, uint64_t now)
 {
-    if (!s || !s->display->ops->surface_frame_time_ns)
+    if (!s)
         return 0;
-    return s->display->ops->surface_frame_time_ns(s, now);
+    if (s->display && s->display->ops && s->display->ops->surface_frame_time_ns)
+        return s->display->ops->surface_frame_time_ns(s, now);
+    return yasl_clock_frame_timestamp_ns(&s->clock, now);
 }
 
 void yasl_surface_set_cursor(struct yasl_surface *s, enum yasl_cursor cursor)
diff --git a/src/common/backend.h b/src/common/backend.h
index e1d29c5..6014cda 100644
--- a/src/common/backend.h
+++ b/src/common/backend.h
@@ -4,6 +4,8 @@
 #include "yasl/yasl.h"
 #include "yasl/loop.h"
 #include "yasl/native.h"
+#include "common/input.h"
+#include "common/timing.h"
 
 struct yasl_backend_ops;
 
@@ -24,6 +26,9 @@ struct yasl_surface {
     struct yasl_surface_cbs callbacks;
     void *ud;
     uint64_t frame_generation;
+    struct input_queue input;
+    struct yasl_frame_clock clock;
+    uint64_t frames_skipped;
     yasl_timer_id *timers;
     int timer_count;
     int timer_capacity;
diff --git a/src/common/loop.c b/src/common/loop.c
index 18d62b1..1c6a612 100644
--- a/src/common/loop.c
+++ b/src/common/loop.c
@@ -199,11 +199,9 @@ static void timer_cleanup_deleted(struct yasl_loop *l)
     if (!l || l->timer_firing_depth > 0) return;
     int dest = 0;
     for (int src = 0; src < l->timer_count; src++) {
-        if (!l->timers[src].deleted) {
-            if (dest != src)
-                l->timers[dest] = l->timers[src];
-            dest++;
-        }
+        struct yasl_timer_source t = l->timers[src];
+        l->timers[dest] = t;
+        dest += !t.deleted;
     }
     l->timer_count = dest;
 }
@@ -270,11 +268,16 @@ yasl_timer_id yasl_loop_add_timer(struct yasl_loop *l, uint64_t interval_ns,
 bool yasl_loop_del_timer(struct yasl_loop *l, yasl_timer_id id)
 {
     if (!l || id == 0) return false;
-    for (int i = 0; i < l->timer_count; i++) {
+    for (int i = l->timer_count - 1; i >= 0; i--) {
         if (l->timers[i].id == id && !l->timers[i].deleted) {
             l->timers[i].deleted = true;
             if (l->timer_firing_depth == 0) {
-                timer_cleanup_deleted(l);
+                if (i == l->timer_count - 1) {
+                    while (l->timer_count > 0 && l->timers[l->timer_count - 1].deleted)
+                        l->timer_count--;
+                } else {
+                    timer_cleanup_deleted(l);
+                }
             }
             return true;
         }
-- 
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