commit 7a4d0dfd43558c299e6af6c4910ef76db9db3172
author Jamie Gennis <jgennis@google.com> Wed Mar 09 17:05:02 2011 -0800
committer Jamie Gennis <jgennis@google.com> Thu Mar 10 16:25:48 2011 -0800
tree 26c9775794d2f939745b9a63e45c2386874fbcff
parent 87c3bfac18977f9c529cf9ff6dfd1f921ee9eac7

SurfaceFlinger: Respect the PROTECTED gralloc bit.

This change makes SurfaceFlinger treat layers for which the active
buffer has the GRALLOC_USAGE_PROTECTED bit set as if they have the
'secure' flag set.

Change-Id: Ic60b6513a63e4bb92ec6ce9fd12fd39b4ba5f674
Bug: 4081304

services/surfaceflinger/Layer.cpp

diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 57af001..1297363 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -57,7 +57,6 @@
         mNeedsDithering(false),
         mSecure(false),
         mProtectedByApp(false),
-        mProtectedByDRM(false),
         mTextureManager(),
         mBufferManager(mTextureManager),
         mWidth(0), mHeight(0), mNeedsScaling(false), mFixedSize(false)
@@ -191,7 +190,6 @@
 
     mSecure = (flags & ISurfaceComposer::eSecure) ? true : false;
     mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false;
-    mProtectedByDRM = (flags & ISurfaceComposer::eProtectedByDRM) ? true : false;
     mNeedsBlending = (info.h_alpha - info.l_alpha) > 0 &&
             (flags & ISurfaceComposer::eOpaque) == 0;
 
@@ -392,6 +390,12 @@
     return LayerBase::needsFiltering();
 }
 
+bool Layer::isProtected() const
+{
+    sp<GraphicBuffer> activeBuffer(mBufferManager.getActiveBuffer());
+    return (activeBuffer != 0) &&
+            (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED);
+}
 
 status_t Layer::setBufferCount(int bufferCount)
 {
@@ -515,7 +519,7 @@
         // request EGLImage for all buffers
         usage |= GraphicBuffer::USAGE_HW_TEXTURE;
     }
-    if (mProtectedByApp || mProtectedByDRM) {
+    if (mProtectedByApp) {
         // need a hardware-protected path to external video sink
         usage |= GraphicBuffer::USAGE_PROTECTED;
     }