commit 4c588a200c537224d4eb5f63fb0a88f791511ff2
author Naseer Ahmed <naseer@codeaurora.org> Tue Jul 31 19:12:17 2012 -0700
committer Iliyan Malchev <malchev@google.com> Tue Aug 14 14:18:13 2012 -0700
tree 652236882900e480fdbe67758dd321a7f2bb784f
parent 2cc53dd510a5e1ffaaac8493b1ff65a908df6c13

hwc: Add support for external-only layers

Add support for different types of external-only layers
EXTERNAL_ONLY: General purpose
EXTERNAL_BLOCK: Blocks the display of other ext-only layers
EXTERNAL_CC: Used for closed captions with videos.

Change-Id: I9cc7b9a1dbf1085194725474d6a4d1094e27a0c8
Acked-by: Saurabh Shah <saurshah@codeaurora.org>

libhwcomposer/hwc.cpp

diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index 13d6274..ad84d25 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -32,6 +32,7 @@
 #include "hwc_copybit.h"
 #include "hwc_external.h"
 #include "hwc_mdpcomp.h"
+#include "hwc_extonly.h"
 
 using namespace qhwc;
 
@@ -81,10 +82,16 @@
     return 0;
 
     if (LIKELY(list)) {
+        //reset for this draw round
+        VideoOverlay::reset();
+        ExtOnly::reset();
+
         getLayerStats(ctx, list);
         if(VideoOverlay::prepare(ctx, list)) {
             ctx->overlayInUse = true;
             //Nothing here
+        } else if(ExtOnly::prepare(ctx, list)) {
+            ctx->overlayInUse = true;
         } else if(UIMirrorOverlay::prepare(ctx, list)) {
             ctx->overlayInUse = true;
         } else if(MDPComp::configure(dev, list)) {
@@ -156,6 +163,7 @@
     hwc_context_t* ctx = (hwc_context_t*)(dev);
     if (LIKELY(list)) {
         VideoOverlay::draw(ctx, list);
+        ExtOnly::draw(ctx, list);
         CopyBit::draw(ctx, list, (EGLDisplay)dpy, (EGLSurface)sur);
         MDPComp::draw(ctx, list);
         EGLBoolean sucess = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur);