drm_hwcomposer: Plumb frame number through display composition

Having frame number in the composition is very useful for
debugging transient issues, plumb it through the drm compositor
stack.

Change-Id: Ibc7555c89bea79c580b3201b11db4ced6360efb9
Signed-off-by: Sean Paul <seanpaul@chromium.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/drmdisplaycomposition.cpp b/drmdisplaycomposition.cpp
index 465a318..c1848e0 100644
--- a/drmdisplaycomposition.cpp
+++ b/drmdisplaycomposition.cpp
@@ -74,7 +74,8 @@ DrmDisplayComposition::DrmDisplayComposition()
       timeline_current_(0),
       timeline_pre_comp_done_(0),
       pre_composition_layer_index_(-1),
-      dpms_mode_(DRM_MODE_DPMS_ON) {
+      dpms_mode_(DRM_MODE_DPMS_ON),
+      frame_no_(0) {
 }
 
 DrmDisplayComposition::~DrmDisplayComposition() {
@@ -100,10 +101,11 @@ DrmDisplayComposition::~DrmDisplayComposition() {
 }
 
 int DrmDisplayComposition::Init(DrmResources *drm, DrmCrtc *crtc,
-                                Importer *importer) {
+                                Importer *importer, uint64_t frame_no) {
   drm_ = drm;
   crtc_ = crtc; // Can be NULL if we haven't modeset yet
   importer_ = importer;
+  frame_no_ = frame_no;
 
   int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
                           (const hw_module_t **)&gralloc_);
@@ -372,6 +374,10 @@ uint32_t DrmDisplayComposition::dpms_mode() const {
   return dpms_mode_;
 }
 
+uint64_t DrmDisplayComposition::frame_no() const {
+  return frame_no_;
+}
+
 Importer *DrmDisplayComposition::importer() const {
   return importer_;
 }