From dd38b8210cd80fd36851530abd5b6be01f92f78c Mon Sep 17 00:00:00 2001
From: Ramkumar Radhakrishnan <ramkumar@codeaurora.org>
Date: Wed, 4 Dec 2013 15:15:42 -0800
Subject: [PATCH] hwc: Calculate viewframe from layers display frame
 information.

Calculate view frame of each display from the displayframe of all
the application layers.

Change-Id: I9ba4076b7b4419bd3559417fad28b4e1de6acff3
---
 libhwcomposer/hwc_utils.cpp | 4 ++++
 libhwcomposer/hwc_utils.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 6f2cb9cf..ac824435 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -745,6 +745,7 @@ void setListStats(hwc_context_t *ctx,
                       (int)ctx->dpyAttr[dpy].xres, (int)ctx->dpyAttr[dpy].yres);
     ctx->listStats[dpy].secureUI = false;
     ctx->listStats[dpy].yuv4k2kCount = 0;
+    ctx->mViewFrame[dpy] = (hwc_rect_t){0, 0, 0, 0};
 
     trimList(ctx, list, dpy);
     optimizeLayerRects(ctx, list, dpy);
@@ -753,6 +754,9 @@ void setListStats(hwc_context_t *ctx,
         hwc_layer_1_t const* layer = &list->hwLayers[i];
         private_handle_t *hnd = (private_handle_t *)layer->handle;
 
+        // Calculate view frame of each display from the layer displayframe
+        ctx->mViewFrame[dpy] = getUnion(ctx->mViewFrame[dpy],
+                                        layer->displayFrame);
 #ifdef QCOM_BSP
         if (layer->flags & HWC_SCREENSHOT_ANIMATOR_LAYER) {
             ctx->listStats[dpy].isDisplayAnimating = true;
diff --git a/libhwcomposer/hwc_utils.h b/libhwcomposer/hwc_utils.h
index 2503e438..95ecf2c2 100644
--- a/libhwcomposer/hwc_utils.h
+++ b/libhwcomposer/hwc_utils.h
@@ -437,6 +437,7 @@ struct hwc_context_t {
     qhwc::LayerProp *layerProp[HWC_NUM_DISPLAY_TYPES];
     qhwc::MDPComp *mMDPComp[HWC_NUM_DISPLAY_TYPES];
     qhwc::HwcDebug *mHwcDebug[HWC_NUM_DISPLAY_TYPES];
+    hwc_rect_t mViewFrame[HWC_NUM_DISPLAY_TYPES];
     qhwc::AssertiveDisplay *mAD;
     qhwc::VPUClient *mVPUClient;