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SurfaceFlinger: Add exclusion list for captureLayers.

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Among other use cases, WM needs to be able to omit the IME from Task Snapshots, even while it
is on-screen.

Bug: 126614127
Test: Transaction_test.cpp#CaptureLayerExclude
Change-Id: I055d99106c9ce2ed90d64eca06961d88cbd5e2d4
This commit is contained in:
Robert Carr
2019-04-02 11:51:11 -07:00
parent dd07ae579c
commit ffcdc51319
2 changed files with 30 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
core/java/android/view/SurfaceControl.java
View File

@@ -92,7 +92,7 @@ public final class SurfaceControl implements Parcelable {
Rect sourceCrop, int width, int height, boolean useIdentityTransform, int rotation,
boolean captureSecureLayers);
private static native ScreenshotGraphicBuffer nativeCaptureLayers(IBinder layerHandleToken,
Rect sourceCrop, float frameScale);
Rect sourceCrop, float frameScale, IBinder[] excludeLayers);
private static native long nativeCreateTransaction();
private static native long nativeGetNativeTransactionFinalizer();
@@ -1990,7 +1990,16 @@ public final class SurfaceControl implements Parcelable {
*/
public static ScreenshotGraphicBuffer captureLayers(IBinder layerHandleToken, Rect sourceCrop,
float frameScale) {
return nativeCaptureLayers(layerHandleToken, sourceCrop, frameScale);
return nativeCaptureLayers(layerHandleToken, sourceCrop, frameScale, null);
}
/**
* Like {@link captureLayers} but with an array of layer handles to exclude.
* @hide
*/
public static ScreenshotGraphicBuffer captureLayersExcluding(IBinder layerHandleToken,
Rect sourceCrop, float frameScale, IBinder[] exclude) {
return nativeCaptureLayers(layerHandleToken, sourceCrop, frameScale, exclude);
}
/**

22
core/jni/android_view_SurfaceControl.cpp
View File

@@ -270,7 +270,7 @@ static jobject nativeScreenshot(JNIEnv* env, jclass clazz,
}
static jobject nativeCaptureLayers(JNIEnv* env, jclass clazz, jobject layerHandleToken,
jobject sourceCropObj, jfloat frameScale) {
jobject sourceCropObj, jfloat frameScale, jobjectArray excludeArray) {
sp<IBinder> layerHandle = ibinderForJavaObject(env, layerHandleToken);
if (layerHandle == NULL) {
@@ -282,11 +282,27 @@ static jobject nativeCaptureLayers(JNIEnv* env, jclass clazz, jobject layerHandl
sourceCrop = rectFromObj(env, sourceCropObj);
}
std::unordered_set<sp<IBinder>,ISurfaceComposer::SpHash<IBinder>> excludeHandles;
if (excludeArray != NULL) {
const jsize len = env->GetArrayLength(excludeArray);
excludeHandles.reserve(len);
for (jsize i = 0; i < len; i++) {
jobject obj = env->GetObjectArrayElement(excludeArray, i);
if (obj == nullptr) {
jniThrowNullPointerException(env, "Exclude layer is null");
return NULL;
}
sp<IBinder> excludeHandle = ibinderForJavaObject(env, obj);
excludeHandles.emplace(excludeHandle);
}
}
sp<GraphicBuffer> buffer;
const ui::Dataspace dataspace = ui::Dataspace::V0_SRGB;
status_t res = ScreenshotClient::captureChildLayers(layerHandle, dataspace,
ui::PixelFormat::RGBA_8888, sourceCrop,
frameScale, &buffer);
excludeHandles, frameScale, &buffer);
if (res != NO_ERROR) {
return NULL;
}
@@ -1354,7 +1370,7 @@ static const JNINativeMethod sSurfaceControlMethods[] = {
"Landroid/view/SurfaceControl$ScreenshotGraphicBuffer;",
(void*)nativeScreenshot },
{"nativeCaptureLayers",
"(Landroid/os/IBinder;Landroid/graphics/Rect;F)"
"(Landroid/os/IBinder;Landroid/graphics/Rect;F[Landroid/os/IBinder;)"
"Landroid/view/SurfaceControl$ScreenshotGraphicBuffer;",
(void*)nativeCaptureLayers },
{"nativeSetInputWindowInfo", "(JJLandroid/view/InputWindowHandle;)V",