Add a better getLastQueuedBuffer
Avoid obfuscation via a matrix that's not necessarily useful or in
the desired origin of the caller. Instead return the source data,
which is also a lot smaller than the matrix is...
Bug: 183553027
Test: atest android.view.cts.PixelCopyTest (+new testBufferQueueCrop)
Change-Id: I1f7b5981405b2f20293bce9119414fc7780b8eb6
Merged-In: I1f7b5981405b2f20293bce9119414fc7780b8eb6
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index d6f9e63..8a64a4f 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -1207,6 +1207,9 @@
case NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER:
res = dispatchGetLastQueuedBuffer(args);
break;
+ case NATIVE_WINDOW_GET_LAST_QUEUED_BUFFER2:
+ res = dispatchGetLastQueuedBuffer2(args);
+ break;
default:
res = NAME_NOT_FOUND;
break;
@@ -1513,6 +1516,39 @@
return result;
}
+int Surface::dispatchGetLastQueuedBuffer2(va_list args) {
+ AHardwareBuffer** buffer = va_arg(args, AHardwareBuffer**);
+ int* fence = va_arg(args, int*);
+ ARect* crop = va_arg(args, ARect*);
+ uint32_t* transform = va_arg(args, uint32_t*);
+ sp<GraphicBuffer> graphicBuffer;
+ sp<Fence> spFence;
+
+ Rect r;
+ int result =
+ mGraphicBufferProducer->getLastQueuedBuffer(&graphicBuffer, &spFence, &r, transform);
+
+ if (graphicBuffer != nullptr) {
+ *buffer = graphicBuffer->toAHardwareBuffer();
+ AHardwareBuffer_acquire(*buffer);
+
+ // Avoid setting crop* unless buffer is valid (matches IGBP behavior)
+ crop->left = r.left;
+ crop->top = r.top;
+ crop->right = r.right;
+ crop->bottom = r.bottom;
+ } else {
+ *buffer = nullptr;
+ }
+
+ if (spFence != nullptr) {
+ *fence = spFence->dup();
+ } else {
+ *fence = -1;
+ }
+ return result;
+}
+
bool Surface::transformToDisplayInverse() {
return (mTransform & NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY) ==
NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY;