refactored screenshot code
the core screenshot function now can capture the screen at any lower resolution
performing bilinear filtering.
we also now have some client code to interface with the screenshot service.
it's now possible to request a screenshot at a lower resolution.
Change-Id: I33689bba98507ab928d0898b21596d0d2fe4b953
diff --git a/libs/surfaceflinger_client/ISurfaceComposer.cpp b/libs/surfaceflinger_client/ISurfaceComposer.cpp
index 040060e..d676f5e 100644
--- a/libs/surfaceflinger_client/ISurfaceComposer.cpp
+++ b/libs/surfaceflinger_client/ISurfaceComposer.cpp
@@ -126,11 +126,14 @@
virtual status_t captureScreen(DisplayID dpy,
sp<IMemoryHeap>* heap,
- uint32_t* width, uint32_t* height, PixelFormat* format)
+ uint32_t* width, uint32_t* height, PixelFormat* format,
+ uint32_t reqWidth, uint32_t reqHeight)
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeInt32(dpy);
+ data.writeInt32(reqWidth);
+ data.writeInt32(reqHeight);
remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
*heap = interface_cast<IMemoryHeap>(reply.readStrongBinder());
*width = reply.readInt32();
@@ -208,10 +211,13 @@
case CAPTURE_SCREEN: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
DisplayID dpy = data.readInt32();
+ uint32_t reqWidth = data.readInt32();
+ uint32_t reqHeight = data.readInt32();
sp<IMemoryHeap> heap;
uint32_t w, h;
PixelFormat f;
- status_t res = captureScreen(dpy, &heap, &w, &h, &f);
+ status_t res = captureScreen(dpy, &heap, &w, &h, &f,
+ reqWidth, reqHeight);
reply->writeStrongBinder(heap->asBinder());
reply->writeInt32(w);
reply->writeInt32(h);