commit c9a6741e15aba06c62e48a19ae6660e4b6c2b3b4
author radhakrishna <radhakrishna@codeaurora.org> Wed Sep 25 17:40:42 2013 +0530
committer radhakrishna <radhakrishna@codeaurora.org> Wed Nov 27 18:35:24 2013 +0530
tree 28b5b876734952d42dc63edbd10a2e212d46732a
parent 01b3d3a6aeca032e705f7f50a77d73d6158b25b0

HWC: Use 2 VG pipes for YUV layer with width > 2048

To minimize usage of decimation when 4K x 2K video is played
on primary, split the yuv layer into 2 halves and configure
each layer to individual VG pipes. With this approach,
decimation can be avoided in some 4K x 2K video use cases,
thereby improving performance.

Change-Id: I7cddfab787c50f6ff132eaa7f5a3d9cfd636c282

libhwcomposer/hwc_mdpcomp.h

diff --git a/libhwcomposer/hwc_mdpcomp.h b/libhwcomposer/hwc_mdpcomp.h
index adf74bb..715a572 100644
--- a/libhwcomposer/hwc_mdpcomp.h
+++ b/libhwcomposer/hwc_mdpcomp.h
@@ -70,6 +70,12 @@
         virtual ~MdpPipeInfo(){};
     };
 
+    struct MdpYUVPipeInfo : public MdpPipeInfo{
+        ovutils::eDest lIndex;
+        ovutils::eDest rIndex;
+        virtual ~MdpYUVPipeInfo(){};
+    };
+
     /* per layer data */
     struct PipeLayerPair {
         MdpPipeInfo *pipeInfo;
@@ -133,7 +139,12 @@
     /* Checks for pipes needed versus pipes available */
     virtual bool arePipesAvailable(hwc_context_t *ctx,
             hwc_display_contents_1_t* list) = 0;
-
+    /* increments mdpCount if 4k2k yuv layer split is enabled*/
+    virtual void modifymdpCountfor4k2k(hwc_context_t *ctx,
+            hwc_display_contents_1_t* list) = 0;
+    /* configures 4kx2k yuv layer*/
+    virtual int configure4k2kYuv(hwc_context_t *ctx, hwc_layer_1_t *layer,
+            PipeLayerPair& PipeLayerPair) = 0;
     /* set/reset flags for MDPComp */
     void setMDPCompLayerFlags(hwc_context_t *ctx,
                               hwc_display_contents_1_t* list);
@@ -219,6 +230,10 @@
     static IdleInvalidator *idleInvalidator;
     struct FrameInfo mCurrentFrame;
     struct LayerCache mCachedFrame;
+    //Enable 4kx2k yuv layer split
+    static bool sEnable4k2kYUVSplit;
+    bool allocSplitVGPipesfor4k2k(hwc_context_t *ctx,
+            hwc_display_contents_1_t* list, int index);
 };
 
 class MDPCompNonSplit : public MDPComp {
@@ -248,6 +263,14 @@
     /* Checks for video pipes needed versus pipes available */
     virtual bool areVGPipesAvailable(hwc_context_t *ctx,
             hwc_display_contents_1_t* list);
+
+    /* increments mdpCount if 4k2k yuv layer split is enabled*/
+    virtual void modifymdpCountfor4k2k(hwc_context_t *ctx,
+             hwc_display_contents_1_t* list);
+
+    /* configures 4kx2k yuv layer to 2 VG pipes*/
+    virtual int configure4k2kYuv(hwc_context_t *ctx, hwc_layer_1_t *layer,
+            PipeLayerPair& PipeLayerPair);
 };
 
 class MDPCompSplit : public MDPComp {
@@ -281,6 +304,14 @@
     virtual bool areVGPipesAvailable(hwc_context_t *ctx,
             hwc_display_contents_1_t* list);
 
+    /* increments mdpCount if 4k2k yuv layer split is enabled*/
+    virtual void modifymdpCountfor4k2k(hwc_context_t *ctx,
+            hwc_display_contents_1_t* list);
+
+    /* configures 4kx2k yuv layer*/
+    virtual int configure4k2kYuv(hwc_context_t *ctx, hwc_layer_1_t *layer,
+            PipeLayerPair& PipeLayerPair);
+
     int pipesNeeded(hwc_context_t *ctx, hwc_display_contents_1_t* list,
             int mixer);
 };