hwc: Do not use fb handle in hwc_prepare

Do not use fb handle in prepare. Use displayFrame for dimensions,
align them and hardcode format

Change-Id: I5c494a74a807d3a52a1c88257494b58c583700f5
diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index d86be3e..02b9317 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -156,21 +156,17 @@
             ctx->dpyAttr[dpy].isActive) {
         reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
         handleGeomChange(ctx, dpy, list);
-        uint32_t last = list->numHwLayers - 1;
-        hwc_layer_1_t *fbLayer = &list->hwLayers[last];
-        if(fbLayer->handle) {
-            setListStats(ctx, list, dpy);
+        setListStats(ctx, list, dpy);
 #ifdef VPU_TARGET
-            ctx->mVPUClient->prepare(ctx, list);
+        ctx->mVPUClient->prepare(ctx, list);
 #endif
-            if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
-                const int fbZ = 0;
-                ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
-            }
-            if (ctx->mMDP.version < qdutils::MDP_V4_0) {
-                if(ctx->mCopyBit[dpy])
-                    ctx->mCopyBit[dpy]->prepare(ctx, list, dpy);
-            }
+        if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
+            const int fbZ = 0;
+            ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
+        }
+        if (ctx->mMDP.version < qdutils::MDP_V4_0) {
+            if(ctx->mCopyBit[dpy])
+                ctx->mCopyBit[dpy]->prepare(ctx, list, dpy);
         }
     }
     return 0;
@@ -187,24 +183,20 @@
             ctx->dpyAttr[dpy].connected) {
         reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
         handleGeomChange(ctx, dpy, list);
-        uint32_t last = list->numHwLayers - 1;
-        hwc_layer_1_t *fbLayer = &list->hwLayers[last];
         if(!ctx->dpyAttr[dpy].isPause) {
-            if(fbLayer->handle) {
-                ctx->dpyAttr[dpy].isConfiguring = false;
-                setListStats(ctx, list, dpy);
-                if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
-                    const int fbZ = 0;
-                    ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
-                }
+            ctx->dpyAttr[dpy].isConfiguring = false;
+            setListStats(ctx, list, dpy);
+            if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
+                const int fbZ = 0;
+                ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
+            }
 
-                if(ctx->listStats[dpy].isDisplayAnimating) {
-                    // Mark all app layers as HWC_OVERLAY for external during
-                    // animation, so that SF doesnt draw it on FB
-                    for(int i = 0 ;i < ctx->listStats[dpy].numAppLayers; i++) {
-                        hwc_layer_1_t *layer = &list->hwLayers[i];
-                        layer->compositionType = HWC_OVERLAY;
-                    }
+            if(ctx->listStats[dpy].isDisplayAnimating) {
+                // Mark all app layers as HWC_OVERLAY for external during
+                // animation, so that SF doesnt draw it on FB
+                for(int i = 0 ;i < ctx->listStats[dpy].numAppLayers; i++) {
+                    hwc_layer_1_t *layer = &list->hwLayers[i];
+                    layer->compositionType = HWC_OVERLAY;
                 }
             }
         } else {
@@ -230,24 +222,20 @@
             ctx->dpyAttr[dpy].connected) {
         reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
         handleGeomChange(ctx, dpy, list);
-        uint32_t last = list->numHwLayers - 1;
-        hwc_layer_1_t *fbLayer = &list->hwLayers[last];
         if(!ctx->dpyAttr[dpy].isPause) {
-            if(fbLayer->handle) {
-                ctx->dpyAttr[dpy].isConfiguring = false;
-                setListStats(ctx, list, dpy);
-                if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
-                    const int fbZ = 0;
-                    ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
-                }
+            ctx->dpyAttr[dpy].isConfiguring = false;
+            setListStats(ctx, list, dpy);
+            if(ctx->mMDPComp[dpy]->prepare(ctx, list) < 0) {
+                const int fbZ = 0;
+                ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZ);
+            }
 
-                if(ctx->listStats[dpy].isDisplayAnimating) {
-                    // Mark all app layers as HWC_OVERLAY for virtual during
-                    // animation, so that SF doesnt draw it on FB
-                    for(int i = 0 ;i < ctx->listStats[dpy].numAppLayers; i++) {
-                        hwc_layer_1_t *layer = &list->hwLayers[i];
-                        layer->compositionType = HWC_OVERLAY;
-                    }
+            if(ctx->listStats[dpy].isDisplayAnimating) {
+                // Mark all app layers as HWC_OVERLAY for virtual during
+                // animation, so that SF doesnt draw it on FB
+                for(int i = 0 ;i < ctx->listStats[dpy].numAppLayers; i++) {
+                    hwc_layer_1_t *layer = &list->hwLayers[i];
+                    layer->compositionType = HWC_OVERLAY;
                 }
             }
         } else {
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index bb6a49c..48a0878 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -164,8 +164,6 @@
     LayerProp *layerProp = ctx->layerProp[dpy];
     size_t fbLayerIndex = ctx->listStats[dpy].fbLayerIndex;
     hwc_layer_1_t *fbLayer = &list->hwLayers[fbLayerIndex];
-    private_handle_t *fbHnd = (private_handle_t *)fbLayer->handle;
-
 
     // Following are MDP3 limitations for which we
     // need to fallback to GPU composition:
@@ -202,9 +200,9 @@
 
     //Allocate render buffers if they're not allocated
     if (useCopybitForYUV || useCopybitForRGB) {
-        int ret = allocRenderBuffers(fbHnd->width,
-                                     fbHnd->height,
-                                     fbHnd->format);
+        int ret = allocRenderBuffers(mAlignedFBWidth,
+                                     mAlignedFBHeight,
+                                     HAL_PIXEL_FORMAT_RGBA_8888);
         if (ret < 0) {
             return false;
         } else {
@@ -696,8 +694,15 @@
     return mEngine;
 }
 
-CopyBit::CopyBit():mIsModeOn(false), mCopyBitDraw(false),
-    mCurRenderBufferIndex(0){
+CopyBit::CopyBit(hwc_context_t *ctx, const int& dpy) : mIsModeOn(false),
+        mCopyBitDraw(false), mCurRenderBufferIndex(0) {
+
+    getBufferSizeAndDimensions(ctx->dpyAttr[dpy].xres,
+            ctx->dpyAttr[dpy].yres,
+            HAL_PIXEL_FORMAT_RGBA_8888,
+            mAlignedFBWidth,
+            mAlignedFBHeight);
+
     hw_module_t const *module;
     for (int i = 0; i < NUM_RENDER_BUFFERS; i++) {
         mRenderBuffer[i] = NULL;
diff --git a/libhwcomposer/hwc_copybit.h b/libhwcomposer/hwc_copybit.h
index fd5c939..4d8123c 100644
--- a/libhwcomposer/hwc_copybit.h
+++ b/libhwcomposer/hwc_copybit.h
@@ -32,7 +32,7 @@
 
 class CopyBit {
 public:
-    CopyBit();
+    CopyBit(hwc_context_t *ctx, const int& dpy);
     ~CopyBit();
     // API to get copybit engine(non static)
     struct copybit_device_t *getCopyBitDevice();
@@ -89,6 +89,8 @@
 
     //Dynamic composition threshold for deciding copybit usage.
     double mDynThreshold;
+    int mAlignedFBWidth;
+    int mAlignedFBHeight;
 };
 
 }; //namespace qhwc
diff --git a/libhwcomposer/hwc_fbupdate.cpp b/libhwcomposer/hwc_fbupdate.cpp
index ce18695..6077ae8 100644
--- a/libhwcomposer/hwc_fbupdate.cpp
+++ b/libhwcomposer/hwc_fbupdate.cpp
@@ -39,20 +39,29 @@
 
 IFBUpdate* IFBUpdate::getObject(hwc_context_t *ctx, const int& dpy) {
     if(isDisplaySplit(ctx, dpy)) {
-        return new FBUpdateSplit(dpy);
+        return new FBUpdateSplit(ctx, dpy);
     }
-    return new FBUpdateNonSplit(dpy);
+    return new FBUpdateNonSplit(ctx, dpy);
 }
 
-inline void IFBUpdate::reset() {
+IFBUpdate::IFBUpdate(hwc_context_t *ctx, const int& dpy) : mDpy(dpy) {
+    getBufferSizeAndDimensions(ctx->dpyAttr[dpy].xres,
+            ctx->dpyAttr[dpy].yres,
+            HAL_PIXEL_FORMAT_RGBA_8888,
+            mAlignedFBWidth,
+            mAlignedFBHeight);
+}
+
+void IFBUpdate::reset() {
     mModeOn = false;
     mRot = NULL;
 }
 
 //================= Low res====================================
-FBUpdateNonSplit::FBUpdateNonSplit(const int& dpy): IFBUpdate(dpy) {}
+FBUpdateNonSplit::FBUpdateNonSplit(hwc_context_t *ctx, const int& dpy):
+        IFBUpdate(ctx, dpy) {}
 
-inline void FBUpdateNonSplit::reset() {
+void FBUpdateNonSplit::reset() {
     IFBUpdate::reset();
     mDest = ovutils::OV_INVALID;
 }
@@ -107,9 +116,10 @@
             layer->compositionType = HWC_OVERLAY;
         }
         overlay::Overlay& ov = *(ctx->mOverlay);
-        private_handle_t *hnd = (private_handle_t *)layer->handle;
-        ovutils::Whf info(getWidth(hnd), getHeight(hnd),
-                          ovutils::getMdpFormat(hnd->format), hnd->size);
+
+        ovutils::Whf info(mAlignedFBWidth,
+                mAlignedFBHeight,
+                ovutils::getMdpFormat(HAL_PIXEL_FORMAT_RGBA_8888));
 
         //Request a pipe
         ovutils::eMdpPipeType type = ovutils::OV_MDP_PIPE_ANY;
@@ -160,7 +170,7 @@
                 displayFrame = sourceCrop;
             }
         }
-        calcExtDisplayPosition(ctx, hnd, mDpy, sourceCrop, displayFrame,
+        calcExtDisplayPosition(ctx, NULL, mDpy, sourceCrop, displayFrame,
                                    transform, orient);
         setMdpFlags(layer, mdpFlags, 0, transform);
         // For External use rotator if there is a rotation value set
@@ -212,9 +222,10 @@
 }
 
 //================= High res====================================
-FBUpdateSplit::FBUpdateSplit(const int& dpy): IFBUpdate(dpy) {}
+FBUpdateSplit::FBUpdateSplit(hwc_context_t *ctx, const int& dpy):
+        IFBUpdate(ctx, dpy) {}
 
-inline void FBUpdateSplit::reset() {
+void FBUpdateSplit::reset() {
     IFBUpdate::reset();
     mDestLeft = ovutils::OV_INVALID;
     mDestRight = ovutils::OV_INVALID;
@@ -246,9 +257,10 @@
             layer->compositionType = HWC_OVERLAY;
         }
         overlay::Overlay& ov = *(ctx->mOverlay);
-        private_handle_t *hnd = (private_handle_t *)layer->handle;
-        ovutils::Whf info(getWidth(hnd), getHeight(hnd),
-                          ovutils::getMdpFormat(hnd->format), hnd->size);
+
+        ovutils::Whf info(mAlignedFBWidth,
+                mAlignedFBHeight,
+                ovutils::getMdpFormat(HAL_PIXEL_FORMAT_RGBA_8888));
 
         //Request left pipe
         ovutils::eDest destL = ov.nextPipe(ovutils::OV_MDP_PIPE_ANY, mDpy,
diff --git a/libhwcomposer/hwc_fbupdate.h b/libhwcomposer/hwc_fbupdate.h
index ce6af63..355e429 100644
--- a/libhwcomposer/hwc_fbupdate.h
+++ b/libhwcomposer/hwc_fbupdate.h
@@ -35,7 +35,7 @@
 //Framebuffer update Interface
 class IFBUpdate {
 public:
-    explicit IFBUpdate(const int& dpy) : mDpy(dpy) {}
+    explicit IFBUpdate(hwc_context_t *ctx, const int& dpy);
     virtual ~IFBUpdate() {};
     // Sets up members and prepares overlay if conditions are met
     virtual bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
@@ -51,12 +51,14 @@
     const int mDpy; // display to update
     bool mModeOn; // if prepare happened
     overlay::Rotator *mRot;
+    int mAlignedFBWidth;
+    int mAlignedFBHeight;
 };
 
 //Non-Split panel handler.
 class FBUpdateNonSplit : public IFBUpdate {
 public:
-    explicit FBUpdateNonSplit(const int& dpy);
+    explicit FBUpdateNonSplit(hwc_context_t *ctx, const int& dpy);
     virtual ~FBUpdateNonSplit() {};
     bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
             int fbZorder);
@@ -77,7 +79,7 @@
 //Split panel handler.
 class FBUpdateSplit : public IFBUpdate {
 public:
-    explicit FBUpdateSplit(const int& dpy);
+    explicit FBUpdateSplit(hwc_context_t *ctx, const int& dpy);
     virtual ~FBUpdateSplit() {};
     bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
             int fbZorder);
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index 5cb87f8..10afc92 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -55,7 +55,7 @@
     if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
                            qdutils::COMPOSITION_TYPE_MDP |
                            qdutils::COMPOSITION_TYPE_C2D)) {
-        ctx->mCopyBit[dpy] = new CopyBit();
+        ctx->mCopyBit[dpy] = new CopyBit(ctx, dpy);
     }
 }
 
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 50111d1..baa2146 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -150,7 +150,8 @@
     if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
                            qdutils::COMPOSITION_TYPE_MDP |
                            qdutils::COMPOSITION_TYPE_C2D)) {
-            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
+            ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit(ctx,
+                    HWC_DISPLAY_PRIMARY);
     }
 
     ctx->mExtDisplay = new ExternalDisplay(ctx);
@@ -1261,7 +1262,7 @@
         ovutils::eMdpFlags &mdpFlags,
         int rotDownscale, int transform) {
     private_handle_t *hnd = (private_handle_t *)layer->handle;
-    MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
+    MetaData_t *metadata = hnd ? (MetaData_t *)hnd->base_metadata : NULL;
 
     if(layer->blending == HWC_BLENDING_PREMULT) {
         ovutils::setMdpFlags(mdpFlags,