1 files changed, 49 insertions, 0 deletions
diff --git a/services/surfaceflinger/RenderArea.cpp b/services/surfaceflinger/RenderArea.cpp
new file mode 100644
index 0000000000..1a8edf3e79
--- /dev/null
+++ b/services/surfaceflinger/RenderArea.cpp
@@ -0,0 +1,49 @@
+#include "RenderArea.h"
+
+#include <gui/LayerState.h>
+
+namespace android {
+
+float RenderArea::getCaptureFillValue(CaptureFill captureFill) {
+    switch(captureFill) {
+        case CaptureFill::CLEAR:
+            return 0.0f;
+        case CaptureFill::OPAQUE:
+        default:
+            return 1.0f;
+    }
+}
+/*
+ * Checks that the requested width and height are valid and updates them to the render area
+ * dimensions if they are set to 0
+ */
+status_t RenderArea::updateDimensions(int displayRotation) {
+    // get screen geometry
+
+    uint32_t width = getWidth();
+    uint32_t height = getHeight();
+
+    if (mRotationFlags & Transform::ROT_90) {
+        std::swap(width, height);
+    }
+
+    if (displayRotation & DisplayState::eOrientationSwapMask) {
+        std::swap(width, height);
+    }
+
+    if ((mReqWidth > width) || (mReqHeight > height)) {
+        ALOGE("size mismatch (%d, %d) > (%d, %d)", mReqWidth, mReqHeight, width, height);
+        return BAD_VALUE;
+    }
+
+    if (mReqWidth == 0) {
+        mReqWidth = width;
+    }
+    if (mReqHeight == 0) {
+        mReqHeight = height;
+    }
+
+    return NO_ERROR;
+}
+
+} // namespace android