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Commit 02202d10 authored by Chiawei Wang's avatar Chiawei Wang
Browse files

Add ability to make task snapshots store in RGB565 

Bug: 123338864
Bug: 135150273
Test: run app-launch-perf test (go/platform-startup)
Test: launch apps manually and measure the execution time of
      snapshotTask(), writeBuffer(), and loadTask()
Change-Id: I9841c6dad99b1f4d4ba0044b7fe06fe021c295a0
parent 9840aa38

core/java/android/view/SurfaceControl.java

+23 −3
Original line number Diff line number Diff line
@@ -90,7 +90,8 @@ public final class SurfaceControl implements Parcelable { 
            Rect sourceCrop, int width, int height, boolean useIdentityTransform, int rotation,

            boolean captureSecureLayers);

    private static native ScreenshotGraphicBuffer nativeCaptureLayers(IBinder displayToken,

            long layerObject, Rect sourceCrop, float frameScale, long[] excludeLayerObjects);

            long layerObject, Rect sourceCrop, float frameScale, long[] excludeLayerObjects,

            int format);

    private static native long nativeMirrorSurface(long mirrorOfObject);

    private static native long nativeCreateTransaction();

    private static native long nativeGetNativeTransactionFinalizer();
@@ -1867,8 +1868,27 @@ public final class SurfaceControl implements Parcelable { 
     */

    public static ScreenshotGraphicBuffer captureLayers(SurfaceControl layer, Rect sourceCrop,

            float frameScale) {

        return captureLayers(layer, sourceCrop, frameScale, PixelFormat.RGBA_8888);

    }



    /**

     * Captures a layer and its children and returns a {@link GraphicBuffer} with the content.

     *

     * @param layer            The root layer to capture.

     * @param sourceCrop       The portion of the root surface to capture; caller may pass in 'new

     *                         Rect()' or null if no cropping is desired.

     * @param frameScale       The desired scale of the returned buffer; the raw

     *                         screen will be scaled up/down.

     * @param format           The desired pixel format of the returned buffer.

     *

     * @return Returns a GraphicBuffer that contains the layer capture.

     * @hide

     */

    public static ScreenshotGraphicBuffer captureLayers(SurfaceControl layer, Rect sourceCrop,

            float frameScale, int format) {

        final IBinder displayToken = SurfaceControl.getInternalDisplayToken();

        return nativeCaptureLayers(displayToken, layer.mNativeObject, sourceCrop, frameScale, null);

        return nativeCaptureLayers(displayToken, layer.mNativeObject, sourceCrop, frameScale, null,

                format);

    }



    /**
@@ -1883,7 +1903,7 @@ public final class SurfaceControl implements Parcelable { 
            nativeExcludeObjects[i] = exclude[i].mNativeObject;

        }

        return nativeCaptureLayers(displayToken, layer.mNativeObject, sourceCrop, frameScale,

                nativeExcludeObjects);

                nativeExcludeObjects, PixelFormat.RGBA_8888);

    }



    /**

core/jni/android_view_SurfaceControl.cpp

+5 −4
Original line number Diff line number Diff line
@@ -274,7 +274,7 @@ static jobject nativeScreenshot(JNIEnv* env, jclass clazz, 


static jobject nativeCaptureLayers(JNIEnv* env, jclass clazz, jobject displayTokenObj,

        jlong layerObject, jobject sourceCropObj, jfloat frameScale,

        jlongArray excludeObjectArray) {

        jlongArray excludeObjectArray, jint format) {



    auto layer = reinterpret_cast<SurfaceControl *>(layerObject);

    if (layer == NULL) {
@@ -311,8 +311,9 @@ static jobject nativeCaptureLayers(JNIEnv* env, jclass clazz, jobject displayTok 
        dataspace = pickDataspaceFromColorMode(colorMode);

    }

    status_t res = ScreenshotClient::captureChildLayers(layer->getHandle(), dataspace,

                                                        ui::PixelFormat::RGBA_8888, sourceCrop,

                                                        excludeHandles, frameScale, &buffer);

                                                        static_cast<ui::PixelFormat>(format),

                                                        sourceCrop, excludeHandles, frameScale,

                                                        &buffer);

    if (res != NO_ERROR) {

        return NULL;

    }
@@ -1376,7 +1377,7 @@ static const JNINativeMethod sSurfaceControlMethods[] = { 
            (void*)nativeScreenshot },

    {"nativeCaptureLayers",

            "(Landroid/os/IBinder;JLandroid/graphics/Rect;"

            "F[J)"

            "F[JI)"

            "Landroid/view/SurfaceControl$ScreenshotGraphicBuffer;",

            (void*)nativeCaptureLayers },

    {"nativeSetInputWindowInfo", "(JJLandroid/view/InputWindowHandle;)V",

core/res/res/values/config.xml

+3 −0
Original line number Diff line number Diff line
@@ -2855,6 +2855,9 @@ 
    <!-- The amount to scale fullscreen snapshots for Overview and snapshot starting windows. -->

    <item name="config_fullTaskSnapshotScale" format="float" type="dimen">1.0</item>



    <!-- Feature flag to store TaskSnapshot in 16 bit pixel format to save memory. -->

    <bool name="config_use16BitTaskSnapshotPixelFormat">false</bool>



    <!-- Determines whether recent tasks are provided to the user. Default device has recents

         property. If this is false, then the following recents config flags are ignored. -->

    <bool name="config_hasRecents">true</bool>

core/res/res/values/symbols.xml

+1 −0
Original line number Diff line number Diff line
@@ -364,6 +364,7 @@ 
  <java-symbol type="bool" name="config_enableNewAutoSelectNetworkUI"/>

  <java-symbol type="bool" name="config_disableUsbPermissionDialogs"/>

  <java-symbol type="dimen" name="config_fullTaskSnapshotScale" />

  <java-symbol type="bool" name="config_use16BitTaskSnapshotPixelFormat" />

  <java-symbol type="bool" name="config_lowRamTaskSnapshotsAndRecents" />

  <java-symbol type="bool" name="config_hasRecents" />

  <java-symbol type="string" name="config_recentsComponentName" />

services/core/java/com/android/server/wm/TaskSnapshotController.java

+19 −4
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 


package com.android.server.wm;



import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;



import static com.android.server.wm.TaskSnapshotPersister.DISABLE_FULL_SIZED_BITMAPS;

import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_SCREENSHOT;

import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
@@ -248,6 +250,12 @@ class TaskSnapshotController { 
    @Nullable

    SurfaceControl.ScreenshotGraphicBuffer createTaskSnapshot(@NonNull Task task,

            float scaleFraction) {

        return createTaskSnapshot(task, scaleFraction, PixelFormat.RGBA_8888);

    }



    @Nullable

    SurfaceControl.ScreenshotGraphicBuffer createTaskSnapshot(@NonNull Task task,

            float scaleFraction, int pixelFormat) {

        if (task.getSurfaceControl() == null) {

            if (DEBUG_SCREENSHOT) {

                Slog.w(TAG_WM, "Failed to take screenshot. No surface control for " + task);
@@ -258,7 +266,7 @@ class TaskSnapshotController { 
        mTmpRect.offsetTo(0, 0);

        final SurfaceControl.ScreenshotGraphicBuffer screenshotBuffer =

                SurfaceControl.captureLayers(

                        task.getSurfaceControl(), mTmpRect, scaleFraction);

                        task.getSurfaceControl(), mTmpRect, scaleFraction, pixelFormat);

        final GraphicBuffer buffer = screenshotBuffer != null ? screenshotBuffer.getGraphicBuffer()

                : null;

        if (buffer == null || buffer.getWidth() <= 1 || buffer.getHeight() <= 1) {
@@ -299,8 +307,14 @@ class TaskSnapshotController { 
            Slog.w(TAG_WM, "Failed to take screenshot. No main window for " + task);

            return null;

        }

        final boolean isWindowTranslucent = mainWindow.getAttrs().format != PixelFormat.OPAQUE;

        final boolean isShowWallpaper = (mainWindow.getAttrs().flags & FLAG_SHOW_WALLPAPER) != 0;

        final int pixelFormat = mPersister.use16BitFormat() && activity.fillsParent()

                && !(isWindowTranslucent && isShowWallpaper)

                ? PixelFormat.RGB_565

                : PixelFormat.RGBA_8888;

        final SurfaceControl.ScreenshotGraphicBuffer screenshotBuffer =

                createTaskSnapshot(task, scaleFraction);

                createTaskSnapshot(task, scaleFraction, pixelFormat);



        if (screenshotBuffer == null) {

            if (DEBUG_SCREENSHOT) {
@@ -308,7 +322,8 @@ class TaskSnapshotController { 
            }

            return null;

        }

        final boolean isWindowTranslucent = mainWindow.getAttrs().format != PixelFormat.OPAQUE;

        final boolean isTranslucent = PixelFormat.formatHasAlpha(pixelFormat)

                && (!activity.fillsParent() || isWindowTranslucent);

        return new TaskSnapshot(

                System.currentTimeMillis() /* id */,

                activity.mActivityComponent, screenshotBuffer.getGraphicBuffer(),
@@ -316,7 +331,7 @@ class TaskSnapshotController { 
                activity.getTask().getConfiguration().orientation,

                getInsets(mainWindow), isLowRamDevice /* reduced */, scaleFraction /* scale */,

                true /* isRealSnapshot */, task.getWindowingMode(), getSystemUiVisibility(task),

                !activity.fillsParent() || isWindowTranslucent);

                isTranslucent);

    }



    private boolean shouldDisableSnapshots() {