commit 1291675ee44cadc234c4403cf1b0cfe70eadaf3a
author Amara Venkata Mastan Manoj Kumar <manojavm@codeaurora.org> Wed Mar 13 19:18:47 2013 -0700
committer Ramkumar Radhakrishnan <ramkumar@codeaurora.org> Fri Aug 16 20:56:05 2013 -0700
tree 2b59a102d703d2cca2aa07d65ab4ea452647831a
parent 5898c65aab91963ccee40150e4fd7a101db42585

hwc: Perform MDP downscaling for WFD/HDMI Scenario

  On WFD/HDMI connection, if the configured resolution is less than
  Primary Resolution, Display HAL does the following:

  1. sends hpd notification to SF with primary resolution.
  2. configures MDP pipes with configured Resolution.

  This is done to improve UI quality as MDP has better downscale
  filter options compared to GPU.
  This works only for QCOM WFD proprietary solution.

Change-Id: Ic20e837bf02c0f7b6718946e70b936f3a469fa7c

libhwcomposer/hwc_fbupdate.cpp

diff --git a/libhwcomposer/hwc_fbupdate.cpp b/libhwcomposer/hwc_fbupdate.cpp
index b5ac2b8..7c2e643 100644
--- a/libhwcomposer/hwc_fbupdate.cpp
+++ b/libhwcomposer/hwc_fbupdate.cpp
@@ -26,10 +26,12 @@
 #include "hwc_fbupdate.h"
 #include "mdp_version.h"
 #include "external.h"
+#include "virtual.h"
 
 using namespace qdutils;
 using namespace overlay;
 using overlay::Rotator;
+using namespace overlay::utils;
 
 namespace qhwc {
 
@@ -118,27 +120,32 @@
         // Do not use getNonWormholeRegion() function to calculate the
         // sourceCrop during animation on external display and
         // Dont do wormhole calculation when extorientation is set on External
+        // Dont do wormhole calculation when extDownscale is enabled on External
         if(ctx->listStats[mDpy].isDisplayAnimating && mDpy) {
             sourceCrop = layer->displayFrame;
             displayFrame = sourceCrop;
-        } else if((!mDpy || (mDpy && !ctx->mExtOrientation))
-                               && extOnlyLayerIndex == -1) {
+        } else if((!mDpy ||
+                   (mDpy && !ctx->mExtOrientation
+                   && !ctx->dpyAttr[mDpy].mDownScaleMode))
+                   && (extOnlyLayerIndex == -1)) {
             if(!qdutils::MDPVersion::getInstance().is8x26()) {
                 getNonWormholeRegion(list, sourceCrop);
                 displayFrame = sourceCrop;
             }
         }
-
         if(mDpy && !qdutils::MDPVersion::getInstance().is8x26()) {
-            if(ctx->mExtOrientation) {
-                calcExtDisplayPosition(ctx, mDpy, displayFrame);
+            if(ctx->mExtOrientation || ctx->dpyAttr[mDpy].mDownScaleMode) {
+                calcExtDisplayPosition(ctx, mDpy, sourceCrop, displayFrame);
                 // If there is a external orientation set, use that
-                transform = ctx->mExtOrientation;
-                orient = static_cast<ovutils::eTransform >(ctx->mExtOrientation);
+                if(ctx->mExtOrientation) {
+                    transform = ctx->mExtOrientation;
+                    orient =
+                        static_cast<ovutils::eTransform >(ctx->mExtOrientation);
+                }
             }
             // Calculate the actionsafe dimensions for External(dpy = 1 or 2)
             getActionSafePosition(ctx, mDpy, displayFrame);
-       }
+        }
         setMdpFlags(layer, mdpFlags, 0, transform);
         // For External use rotator if there is a rotation value set
         if(mDpy && (ctx->mExtOrientation & HWC_TRANSFORM_ROT_90)) {