Allow disabling layer rotation during screenshots

Add the ability to ignore layers' transformation matrices during
screenshot capture, which will allow the window manager to capture
unrotated images for recents during the device rotation animation.

Bug: 11805195
Change-Id: I854d87bc84ca06ef9a054a454af1c080ee66fbb8

1 files changed, 12 insertions, 8 deletions

diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 2246f5f9bb..5fe99e8555 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -628,11 +628,11 @@ status_t ScreenshotClient::capture(
         const sp<IBinder>& display,
         const sp<IGraphicBufferProducer>& producer,
         uint32_t reqWidth, uint32_t reqHeight,
-        uint32_t minLayerZ, uint32_t maxLayerZ) {
+        uint32_t minLayerZ, uint32_t maxLayerZ, bool useIdentityTransform) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     return s->captureScreen(display, producer,
-            reqWidth, reqHeight, minLayerZ, maxLayerZ);
+            reqWidth, reqHeight, minLayerZ, maxLayerZ, useIdentityTransform);
 }
 
 ScreenshotClient::ScreenshotClient()
@@ -655,7 +655,8 @@ sp<CpuConsumer> ScreenshotClient::getCpuConsumer() const {
 
 status_t ScreenshotClient::update(const sp<IBinder>& display,
         uint32_t reqWidth, uint32_t reqHeight,
-        uint32_t minLayerZ, uint32_t maxLayerZ) {
+        uint32_t minLayerZ, uint32_t maxLayerZ,
+        bool useIdentityTransform) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     sp<CpuConsumer> cpuConsumer = getCpuConsumer();
@@ -667,7 +668,7 @@ status_t ScreenshotClient::update(const sp<IBinder>& display,
     }
 
     status_t err = s->captureScreen(display, mBufferQueue,
-            reqWidth, reqHeight, minLayerZ, maxLayerZ);
+            reqWidth, reqHeight, minLayerZ, maxLayerZ, useIdentityTransform);
 
     if (err == NO_ERROR) {
         err = mCpuConsumer->lockNextBuffer(&mBuffer);
@@ -678,13 +679,16 @@ status_t ScreenshotClient::update(const sp<IBinder>& display,
     return err;
 }
 
-status_t ScreenshotClient::update(const sp<IBinder>& display) {
-    return ScreenshotClient::update(display, 0, 0, 0, -1UL);
+status_t ScreenshotClient::update(const sp<IBinder>& display,
+        bool useIdentityTransform) {
+    return ScreenshotClient::update(display, 0, 0, 0, -1UL,
+            useIdentityTransform);
 }
 
 status_t ScreenshotClient::update(const sp<IBinder>& display,
-        uint32_t reqWidth, uint32_t reqHeight) {
-    return ScreenshotClient::update(display, reqWidth, reqHeight, 0, -1UL);
+        uint32_t reqWidth, uint32_t reqHeight, bool useIdentityTransform) {
+    return ScreenshotClient::update(display, reqWidth, reqHeight, 0, -1UL,
+            useIdentityTransform);
 }
 
 void ScreenshotClient::release() {