Protected surface API
To be used by DRM framework, implemented by display HAL
Change-Id: I054a07a94f4d5dbe792f3a597e2e49a100d90eb2
diff --git a/include/surfaceflinger/ISurfaceComposer.h b/include/surfaceflinger/ISurfaceComposer.h
index 56ed3a4..361e7dc 100644
--- a/include/surfaceflinger/ISurfaceComposer.h
+++ b/include/surfaceflinger/ISurfaceComposer.h
@@ -44,6 +44,8 @@
eSecure = 0x00000080,
eNonPremultiplied = 0x00000100,
eOpaque = 0x00000400,
+ eProtectedByApp = 0x00000800,
+ eProtectedByDRM = 0x00001000,
eFXSurfaceNormal = 0x00000000,
eFXSurfaceBlur = 0x00010000,
diff --git a/include/ui/GraphicBuffer.h b/include/ui/GraphicBuffer.h
index 8b256f4..02d6f8f 100644
--- a/include/ui/GraphicBuffer.h
+++ b/include/ui/GraphicBuffer.h
@@ -54,9 +54,11 @@
USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
-
+
USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
-
+
+ USAGE_PROTECTED = GRALLOC_USAGE_PROTECTED,
+
USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 3730739..188686d 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -56,6 +56,8 @@
mNeedsBlending(true),
mNeedsDithering(false),
mSecure(false),
+ mProtectedByApp(false),
+ mProtectedByDRM(false),
mTextureManager(),
mBufferManager(mTextureManager),
mWidth(0), mHeight(0), mNeedsScaling(false), mFixedSize(false)
@@ -191,6 +193,8 @@
mReqHeight = h;
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;
@@ -476,6 +480,10 @@
// request EGLImage for all buffers
usage |= GraphicBuffer::USAGE_HW_TEXTURE;
}
+ if (mProtectedByApp || mProtectedByDRM) {
+ // need a hardware-protected path to external video sink
+ usage |= GraphicBuffer::USAGE_PROTECTED;
+ }
return usage;
}
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 2908119..d9a8be3 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -79,6 +79,8 @@
virtual bool needsDithering() const { return mNeedsDithering; }
virtual bool needsFiltering() const;
virtual bool isSecure() const { return mSecure; }
+ virtual bool isProtectedByApp() const { return mProtectedByApp; }
+ virtual bool isProtectedByDRM() const { return mProtectedByDRM; }
virtual sp<Surface> createSurface() const;
virtual status_t ditch();
virtual void onRemoved();
@@ -218,7 +220,9 @@
bool mNeedsDithering;
// page-flip thread (currently main thread)
- bool mSecure;
+ bool mSecure; // no screenshots
+ bool mProtectedByApp; // application requires protected path to external sink
+ bool mProtectedByDRM; // DRM agent requires protected path to external sink
Region mPostedDirtyRegion;
// page-flip thread and transaction thread (currently main thread)
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index 8ed4749..184edd7 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -196,6 +196,18 @@
*/
virtual bool isSecure() const { return false; }
+ /**
+ * isProtectedByApp - true if application says this surface is protected, that
+ * is if it requires a hardware-protected data path to an external sink.
+ */
+ virtual bool isProtectedByApp() const { return false; }
+
+ /**
+ * isProtectedByDRM - true if DRM agent says this surface is protected, that
+ * is if it requires a hardware-protected data path to an external sink.
+ */
+ virtual bool isProtectedByDRM() const { return false; }
+
/** Called from the main thread, when the surface is removed from the
* draw list */
virtual status_t ditch() { return NO_ERROR; }
diff --git a/services/surfaceflinger/LayerDim.h b/services/surfaceflinger/LayerDim.h
index f032314..a04a0c0 100644
--- a/services/surfaceflinger/LayerDim.h
+++ b/services/surfaceflinger/LayerDim.h
@@ -42,8 +42,10 @@
virtual ~LayerDim();
virtual void onDraw(const Region& clip) const;
- virtual bool needsBlending() const { return true; }
- virtual bool isSecure() const { return false; }
+ virtual bool needsBlending() const { return true; }
+ virtual bool isSecure() const { return false; }
+ virtual bool isProtectedByApp() const { return false; }
+ virtual bool isProtectedByDRM() const { return false; }
virtual const char* getTypeId() const { return "LayerDim"; }
static void initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h);