commit cb2a2436085b986adb3e50ff19eefd7218d5b169
author Tatenda Chipeperekwa <tatendac@codeaurora.org> Wed Aug 06 17:45:58 2014 -0700
committer Tatenda Chipeperekwa <tatendac@codeaurora.org> Mon Sep 15 11:12:35 2014 -0700
tree 0d4c78fba3917c542e82d05b418a7d6ed668ecd0
parent a7dcd9f7b83a9fa8dabe9ce156254aac36825e51

hwc: vd: Add support for Dynamic Resolution Change (DRC)

1. Add support for Dynamic Resolution Change

We add support for DRC on virtual displays. This is achieved
by reading the width and height attributes that are set as
part of the buffer handle metadata.

For the WFD use cases, the WFD  MultiMedia framework will
update the width and height during DRC by using setMetaData
API with UPDATE_BUFFER_GEOMETRY. We then proceed to configure
WB with the new resolution for subsequent frames.

2. Update WB dump with output buffer format and resolution

Update WB dump with output buffer format and resolution. This is
helpful for debugging purposes.

Change-Id: I537277499041bffc7bfc5c6e3d024b67f80fce44

libexternal/external.cpp

diff --git a/libexternal/external.cpp b/libexternal/external.cpp
index 0a1335a..a615f5f 100644
--- a/libexternal/external.cpp
+++ b/libexternal/external.cpp
@@ -581,14 +581,14 @@
         // Always set dpyAttr res to mVInfo res
         mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].xres = width;
         mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].yres = height;
-        mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mDownScaleMode = false;
+        mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mMDPScalingMode = false;
         if(mHwcContext->mOverlay->isUIScalingOnExternalSupported()
                 && mHwcContext->mMDPDownscaleEnabled) {
             int priW = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].xres;
             int priH = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].yres;
             // if primary resolution is more than the hdmi resolution
-            // configure dpy attr to primary resolution and set
-            // downscale mode
+            // configure dpy attr to primary resolution and set MDP
+            // scaling mode.
             // Restrict this upto 1080p resolution max, if target does not
             // support source split feature.
             if((priW * priH) > (width * height) &&
@@ -632,16 +632,17 @@
                 mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].xres = alignedExtW;
                 mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].yres = alignedExtH;
                 // Set External Display MDP Downscale mode indicator
-                mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mDownScaleMode =true;
+                mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mMDPScalingMode
+                        = true;
             }
         }
         ALOGD_IF(DEBUG_MDPDOWNSCALE, "Selected external resolution [%d X %d] "
-                 "maxMDPDownScale %d MDPDownScaleMode %d srcSplitEnabled %d "
+                 "maxMDPDownScale %d mMDPScalingMode %d srcSplitEnabled %d "
                  "MDPDownscale feature %d",
                  mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].xres,
                  mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].yres,
                  qdutils::MDPVersion::getInstance().getMaxMDPDownscale(),
-                 mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mDownScaleMode,
+                 mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].mMDPScalingMode,
                  qdutils::MDPVersion::getInstance().isSrcSplit(),
                  mHwcContext->mMDPDownscaleEnabled);
         //Initialize the display viewFrame info