1 files changed, 34 insertions, 0 deletions
diff --git a/services/surfaceflinger/RenderArea.cpp b/services/surfaceflinger/RenderArea.cpp
new file mode 100644
index 0000000000..6225df134d
--- /dev/null
+++ b/services/surfaceflinger/RenderArea.cpp
@@ -0,0 +1,34 @@
+#include "RenderArea.h"
+
+namespace android {
+
+/*
+ * 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() {
+    // get screen geometry
+
+    uint32_t width = getWidth();
+    uint32_t height = getHeight();
+
+    if (mRotationFlags & Transform::ROT_90) {
+        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
+\ No newline at end of file