hwc: Use viewframe to compute display position and crop.
1. Use viewframe of external display to compute Aspect ratio position
for external.
2. Use viewframe to find the crop rectangle of the frame buffer to
configure rotator for external orientation usecase.
Change-Id: I564c70f202176c8b1f707cbafc08cbbb2abde383
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index e632843..db19a93 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -390,6 +390,7 @@
// based on the position and aspect ratio with orientation
void getAspectRatioPosition(hwc_context_t* ctx, int dpy, int extOrientation,
hwc_rect_t& inRect, hwc_rect_t& outRect) {
+ hwc_rect_t viewFrame = ctx->mViewFrame[dpy];
// Physical display resolution
float fbWidth = ctx->dpyAttr[dpy].xres;
float fbHeight = ctx->dpyAttr[dpy].yres;
@@ -427,14 +428,20 @@
yPos = rect.top;
width = rect.right - rect.left;
height = rect.bottom - rect.top;
+ // swap viewframe coordinates for 90 degree rotation.
+ swap(viewFrame.left, viewFrame.top);
+ swap(viewFrame.right, viewFrame.bottom);
}
+ // if viewframe left and top coordinates are non zero value then exclude it
+ // during the computation of xRatio and yRatio
+ xRatio = (inPos.x - viewFrame.left)/actualWidth;
+ yRatio = (inPos.y - viewFrame.top)/actualHeight;
+ // Use viewframe width and height to compute wRatio and hRatio.
+ wRatio = inPos.w/(viewFrame.right - viewFrame.left);
+ hRatio = inPos.h/(viewFrame.bottom - viewFrame.top);
+
//Calculate the position...
- xRatio = inPos.x/actualWidth;
- yRatio = inPos.y/actualHeight;
- wRatio = inPos.w/actualWidth;
- hRatio = inPos.h/actualHeight;
-
outPos.x = (xRatio * width) + xPos;
outPos.y = (yRatio * height) + yPos;
outPos.w = wRatio * width;