From e432f80a0594a909b71ed1a12e0ae7f571c95b14 Mon Sep 17 00:00:00 2001
From: Arnav Bhatt <arnav@ghativega.in>
Date: Sun, 23 Jun 2024 02:22:36 +0530
Subject: [PATCH] add timer support

Signed-off-by: Arnav Bhatt <arnav@ghativega.in>
---
 Makefile                         |  2 +-
 include/SDL_config_kolibri.h     |  4 +--
 src/timer/kolibri/SDL_systimer.c | 54 ++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+), 3 deletions(-)
 create mode 100644 src/timer/kolibri/SDL_systimer.c

diff --git a/Makefile b/Makefile
index 6d335ea..5bb7b00 100755
--- a/Makefile
+++ b/Makefile
@@ -70,7 +70,7 @@ thread_OBJS = src/thread/SDL_thread.o src/thread/generic/SDL_syscond.o \
         src/thread/generic/SDL_sysmutex.o src/thread/generic/SDL_syssem.o \
 		src/thread/generic/SDL_systhread.o src/thread/generic/SDL_systls.o
 
-timer_OBJS = src/timer/SDL_timer.o src/timer/dummy/SDL_systimer.o
+timer_OBJS = src/timer/SDL_timer.o src/timer/kolibri/SDL_systimer.o
 
 video_OBJS = src/video/SDL_blit_0.o src/video/SDL_blit_1.o src/video/SDL_blit_A.o \
         src/video/SDL_blit_auto.o src/video/SDL_blit_copy.o src/video/SDL_blit_N.o \
diff --git a/include/SDL_config_kolibri.h b/include/SDL_config_kolibri.h
index 6a64d79..11a4758 100644
--- a/include/SDL_config_kolibri.h
+++ b/include/SDL_config_kolibri.h
@@ -92,8 +92,8 @@
 /* Enable the dummy thread support (src/thread/dummy/\*.c) */
 #define SDL_THREADS_DISABLED 1
 
-/* Enable the dummy timer support (src/timer/dummy/\*.c) */
-#define SDL_TIMER_DUMMY 1
+/* Enable the Kolibri timer support (src/timer/dummy/\*.c) */
+#define SDL_TIMER_KOLIBRI 1
 
 /* Enable the Kolibri video driver (src/video/kolibri/\*.c) */
 #define SDL_VIDEO_DRIVER_KOLIBRI 1
diff --git a/src/timer/kolibri/SDL_systimer.c b/src/timer/kolibri/SDL_systimer.c
new file mode 100644
index 0000000..57a3aac
--- /dev/null
+++ b/src/timer/kolibri/SDL_systimer.c
@@ -0,0 +1,54 @@
+
+#include "../../SDL_internal.h"
+
+#ifdef SDL_TIMER_KOLIBRI
+
+#include <sys/ksys.h>
+
+#include "SDL_timer.h"
+
+static uint64_t start_tick;
+static SDL_bool ticks_started = SDL_FALSE;
+
+void SDL_TicksInit(void)
+{
+    if (ticks_started)
+        return;
+
+    ticks_started = SDL_TRUE;
+
+    /* Set first ticks value */
+    start_tick = _ksys_get_ns_count();
+}
+
+void SDL_TicksQuit(void)
+{
+    ticks_started = SDL_FALSE;
+}
+
+Uint64 SDL_GetTicks64(void)
+{
+    uint64_t elapsed;
+    if (!ticks_started) {
+        SDL_TicksInit();
+    }
+
+    return (Uint64)((_ksys_get_ns_count() - start_tick) / 1000000);
+}
+
+Uint64 SDL_GetPerformanceCounter(void)
+{
+    return _ksys_get_ns_count();
+}
+
+Uint64 SDL_GetPerformanceFrequency(void)
+{
+    return 1000000000;
+}
+
+void SDL_Delay(Uint32 ms)
+{
+    _ksys_delay((uint32_t)(ms / 10 + (ms % 10 > 0)));
+}
+
+#endif