From 79c48dbe5b36515576192dfd684c6b2ce48c74ef Mon Sep 17 00:00:00 2001
From: Kalyan Kondapally <kalyan.kondapally@intel.com>
Date: Mon, 18 Dec 2017 15:41:07 -0800
Subject: [PATCH] Add a common function to reset queue state.

We have bunch of state which needs to be re-initialized everytime
queue is re started. We where now doing this in Exit and Initialize
call. Instead let's have a helper function do this.

Jira: None.
Test: No new regressions in Linux tests and Android.

Signed-off-by: Kalyan Kondapally <kalyan.kondapally@intel.com>
---
 common/display/displayqueue.cpp | 56 ++++++++++++++++++-----------------------
 common/display/displayqueue.h   |  4 +++
 2 files changed, 28 insertions(+), 32 deletions(-)

diff --git a/common/display/displayqueue.cpp b/common/display/displayqueue.cpp
index 0cb8ef3..6e91340 100644
--- a/common/display/displayqueue.cpp
+++ b/common/display/displayqueue.cpp
@@ -65,21 +65,6 @@ DisplayQueue::~DisplayQueue() {
 
 bool DisplayQueue::Initialize(uint32_t pipe, uint32_t width, uint32_t height,
                               DisplayPlaneHandler* plane_handler) {
-  total_cursor_layers_ = 0;
-  std::vector<OverlayLayer>().swap(in_flight_layers_);
-  DisplayPlaneStateList().swap(previous_plane_state_);
-  bool ignore_updates = false;
-  if (idle_tracker_.state_ & FrameStateTracker::kIgnoreUpdates) {
-    ignore_updates = true;
-  }
-  idle_tracker_.state_ = 0;
-  idle_tracker_.idle_frames_ = 0;
-  if (ignore_updates) {
-    idle_tracker_.state_ |= FrameStateTracker::kIgnoreUpdates;
-  }
-
-  compositor_.Reset();
-
   if (!resource_manager_) {
     ETRACE("Failed to construct hwc layer buffer manager");
     return false;
@@ -92,6 +77,7 @@ bool DisplayQueue::Initialize(uint32_t pipe, uint32_t width, uint32_t height,
     return false;
   }
 
+  ResetQueue();
   vblank_handler_->SetPowerMode(kOff);
   vblank_handler_->Init(gpu_fd_, pipe);
   return true;
@@ -720,21 +706,6 @@ void DisplayQueue::HandleExit() {
     display_->Disable(previous_plane_state_);
   }
 
-  std::vector<OverlayLayer>().swap(in_flight_layers_);
-  DisplayPlaneStateList().swap(previous_plane_state_);
-  display_plane_manager_->ReleaseAllOffScreenTargets();
-  total_cursor_layers_ = 0;
-
-  bool ignore_updates = false;
-  if (idle_tracker_.state_ & FrameStateTracker::kIgnoreUpdates) {
-    ignore_updates = true;
-  }
-  idle_tracker_.state_ = 0;
-  idle_tracker_.idle_frames_ = 0;
-  if (ignore_updates) {
-    idle_tracker_.state_ |= FrameStateTracker::kIgnoreUpdates;
-  }
-
   if (kms_fence_ > 0) {
     close(kms_fence_);
     kms_fence_ = 0;
@@ -759,8 +730,7 @@ void DisplayQueue::HandleExit() {
     state_ |= kClonedMode;
   }
 
-  resource_manager_->PurgeBuffer();
-  compositor_.Reset();
+  ResetQueue();
 }
 
 bool DisplayQueue::CheckPlaneFormat(uint32_t format) {
@@ -923,4 +893,26 @@ void DisplayQueue::UpdateScalingRatio(uint32_t primary_width,
   state_ |= kConfigurationChanged;
 }
 
+void DisplayQueue::ResetQueue() {
+  total_cursor_layers_ = 0;
+  applied_video_effect_ = false;
+  std::vector<OverlayLayer>().swap(in_flight_layers_);
+  DisplayPlaneStateList().swap(previous_plane_state_);
+  if (display_plane_manager_->HasSurfaces())
+    display_plane_manager_->ReleaseAllOffScreenTargets();
+
+  resource_manager_->PurgeBuffer();
+  bool ignore_updates = false;
+  if (idle_tracker_.state_ & FrameStateTracker::kIgnoreUpdates) {
+    ignore_updates = true;
+  }
+
+  idle_tracker_.state_ = 0;
+  idle_tracker_.idle_frames_ = 0;
+  if (ignore_updates) {
+    idle_tracker_.state_ |= FrameStateTracker::kIgnoreUpdates;
+  }
+  compositor_.Reset();
+}
+
 }  // namespace hwcomposer
diff --git a/common/display/displayqueue.h b/common/display/displayqueue.h
index 69de264..a73b5f8 100644
--- a/common/display/displayqueue.h
+++ b/common/display/displayqueue.h
@@ -238,6 +238,10 @@ class DisplayQueue {
   void ReleaseSurfaces();
   void ReleaseSurfacesAsNeeded(bool layers_validated);
 
+  // Re-initialize all state. When we are hearing this means the
+  // queue is teraing down or re-started for some reason.
+  void ResetQueue();
+
   Compositor compositor_;
   uint32_t gpu_fd_;
   uint32_t brightness_;
-- 
2.11.0