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Fix camera orientation by swapping horizontal and vertical flips when needed. 

Bug: 16637957

Change-Id: I66de597546fdc19e0af9e6150ca20460ab36bf8b
This commit is contained in:
Michael Lentine 2014-08-19 11:27:30 -07:00
parent f755140794
commit 1440963470
1 changed files with 18 additions and 1 deletions
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19
services/surfaceflinger/Layer.cpp
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@ -332,6 +332,14 @@ FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const {
if (invTransformOrient & NATIVE_WINDOW_TRANSFORM_ROT_90) {
invTransformOrient ^= NATIVE_WINDOW_TRANSFORM_FLIP_V |
NATIVE_WINDOW_TRANSFORM_FLIP_H;
// If the transform has been rotated the axis of flip has been swapped
// so we need to swap which flip operations we are performing
bool is_h_flipped = (invTransform & NATIVE_WINDOW_TRANSFORM_FLIP_H) != 0;
bool is_v_flipped = (invTransform & NATIVE_WINDOW_TRANSFORM_FLIP_V) != 0;
if (is_h_flipped != is_v_flipped) {
invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V |
NATIVE_WINDOW_TRANSFORM_FLIP_H;
}
}
// and apply to the current transform
invTransform = (Transform(invTransform) * Transform(invTransformOrient)).getOrientation();
@ -411,13 +419,22 @@ void Layer::setGeometry(
* the code below applies the display's inverse transform to the buffer
*/
uint32_t invTransform = hw->getOrientationTransform();
uint32_t t_orientation = transform.getOrientation();
// calculate the inverse transform
if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V |
NATIVE_WINDOW_TRANSFORM_FLIP_H;
// If the transform has been rotated the axis of flip has been swapped
// so we need to swap which flip operations we are performing
bool is_h_flipped = (t_orientation & NATIVE_WINDOW_TRANSFORM_FLIP_H) != 0;
bool is_v_flipped = (t_orientation & NATIVE_WINDOW_TRANSFORM_FLIP_V) != 0;
if (is_h_flipped != is_v_flipped) {
t_orientation ^= NATIVE_WINDOW_TRANSFORM_FLIP_V |
NATIVE_WINDOW_TRANSFORM_FLIP_H;
}
}
// and apply to the current transform
transform = transform * Transform(invTransform);
transform = Transform(t_orientation) * Transform(invTransform);
}
// this gives us only the "orientation" component of the transform