CTS of CtsMediaTestCases#android.media.cts.DecodeAccuracyTest may fail when video is cropped.

When we use GPU to copy the data, rendering would choose filter. But we need add shrink in border to ensure the sampler not reach border like what GUI does.

Change-Id: I2c59956f3d7a7052d8e4bee587360f252a6c5549
Signed-off-by: Chun Jiang <chun.jiang@mediatek.com>
Bug: 197180327
Test: CTS PixelCopyTests & DecodeAccuracyTest

libs/hwui/Readback.cpp

@@ -32,6 +32,8 @@
 
 using namespace android::uirenderer::renderthread;
 
+static constexpr bool sEnableExtraCropInset = true;
+
 namespace android {
 namespace uirenderer {
 
@@ -71,6 +73,20 @@ CopyResult Readback::copySurfaceInto(ANativeWindow* window, const Rect& inSrcRec
         ALOGW("Surface doesn't have any previously queued frames, nothing to readback from");
         return CopyResult::SourceEmpty;
     }
+
+    if (sEnableExtraCropInset &&
+        (cropRect.right - cropRect.left != bitmap->width() ||
+        cropRect.bottom - cropRect.top != bitmap->height())) {
+       /*
+        * When we need use filtering, we should also make border shrink here like gui.
+        * But we could not check format for YUV or RGB here... Just use 1 pix.
+        */
+        cropRect.left += 0.5f;
+        cropRect.top  += 0.5f;
+        cropRect.right -= 0.5f;
+        cropRect.bottom -= 0.5f;
+    }
+
     UniqueAHardwareBuffer sourceBuffer{rawSourceBuffer};
     AHardwareBuffer_Desc description;
     AHardwareBuffer_describe(sourceBuffer.get(), &description);