[vlc-devel] [PATCH 3/7] video_output: use INT64_MAX for the invalid control pop deadline

[Steve Lhomme]

This simplifies setting the value.

When reading a control with an invalid deadline, we don't wait for a command
to arrive.
---
 src/video_output/control.c      |  2 +-
 src/video_output/control.h      |  2 ++
 src/video_output/video_output.c | 22 ++++++++--------------
 3 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/src/video_output/control.c b/src/video_output/control.c
index fd0c80fe6eb..9faacb7e815 100644
--- a/src/video_output/control.c
+++ b/src/video_output/control.c
@@ -147,7 +147,7 @@ int vout_control_Pop(vout_control_t *ctrl, vout_control_cmd_t *cmd,
 
     if (ctrl->cmd.i_size <= 0) {
         /* Spurious wakeups are perfectly fine */
-        if (deadline != VLC_TICK_INVALID && ctrl->can_sleep) {
+        if (deadline != INVALID_DEADLINE && ctrl->can_sleep) {
             ctrl->is_waiting = true;
             vlc_cond_signal(&ctrl->wait_available);
             vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, deadline);
diff --git a/src/video_output/control.h b/src/video_output/control.h
index eee86c4ca93..6161c5ba3db 100644
--- a/src/video_output/control.h
+++ b/src/video_output/control.h
@@ -76,6 +76,8 @@ void vout_control_Hold(vout_control_t *);
 void vout_control_Release(vout_control_t *);
 
 /* control inside of the vout thread */
+#define INVALID_DEADLINE   ((vlc_tick_t) INT64_MAX)
+
 int vout_control_Pop(vout_control_t *, vout_control_cmd_t *, vlc_tick_t deadline);
 void vout_control_Dead(vout_control_t *);
 
diff --git a/src/video_output/video_output.c b/src/video_output/video_output.c
index 9c9045b6e67..dacb6a669a7 100644
--- a/src/video_output/video_output.c
+++ b/src/video_output/video_output.c
@@ -1444,7 +1444,7 @@ static int ThreadDisplayPicture(vout_thread_sys_t *vout, vlc_tick_t *next_render
     assert(sys->clock);
 
     if (next_render)
-        *next_render = VLC_TICK_INVALID;
+        *next_render = INVALID_DEADLINE;
 
     if (first)
         if (ThreadDisplayPreparePicture(vout, true, frame_by_frame, &paused)) /* FIXME not sure it is ok */
@@ -1489,10 +1489,8 @@ static int ThreadDisplayPicture(vout_thread_sys_t *vout, vlc_tick_t *next_render
         }
         else
         {
-            if (!frame_by_frame) {
-                if (*next_render == VLC_TICK_INVALID || *next_render > next_system_pts)
-                    *next_render = next_system_pts;
-            }
+            if (!frame_by_frame)
+                *next_render = __MIN(*next_render, next_system_pts);
 
             if (next_system_pts <= system_now)
                 drop_next_frame = true;
@@ -1846,7 +1844,7 @@ static void *Thread(void *object)
     vout_thread_sys_t *vout = object;
     vout_thread_sys_t *sys = vout;
 
-    vlc_tick_t deadline = VLC_TICK_INVALID;
+    vlc_tick_t deadline = INVALID_DEADLINE;
     bool wait = false;
 
     for (;;) {
@@ -1854,16 +1852,12 @@ static void *Thread(void *object)
 
         if (wait)
         {
-            const vlc_tick_t max_deadline = vlc_tick_now() + VLC_TICK_FROM_MS(100);
-            if (deadline == VLC_TICK_INVALID)
-                deadline = max_deadline;
-            else
-            {
+            if (deadline != INVALID_DEADLINE)
                 deadline -= vout_chrono_GetHigh(&sys->render) + VOUT_MWAIT_TOLERANCE;
-                deadline = __MIN(deadline, max_deadline);
-            }
+            const vlc_tick_t max_deadline = vlc_tick_now() + VLC_TICK_FROM_MS(100);
+            deadline = __MIN(deadline, max_deadline);
         } else {
-            deadline = VLC_TICK_INVALID;
+            deadline = INVALID_DEADLINE;
         }
 
         while (!vout_control_Pop(&sys->control, &cmd, deadline)) {
-- 
2.26.2