ShutdownAnimation

准备shutanimation.zip
修改的文件：
device\/intel\/cherrytrail\/CHT80A\/CHT80A.mk
device\/intel\/cherrytrail\/CHT80A\/init.rc
frameworks\/base\/cmds\/bootanimation\/BootAnimation.cpp
frameworks\/base\/cmds\/bootanimation\/BootAnimation.h
frameworks\/base\/cmds\/bootanimation\/bootanimation_main.cpp
frameworks\/base\/services\/core\/java\/com\/android\/server\/power\/ShutdownThread.java

CHT80A.mk

PRODUCT_PROPERTY_OVERRIDES += \
     ro.shutdown.animation=true
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/shutanimation.zip:system/media/shutanimation.zip \

init.rc

service shutdownanim /system/bin/bootanimation -shutdown
    user graphics
    group graphics
    disabled
    oneshot

BootAnimation.cpp

#define SYSTEM_SHUTANIMATION_FILE "/system/media/shutanimation.zip"

// Modify by chenlei for shutdown animation
void BootAnimation::isShutdown(bool isShutdown)
{
    ALOGD("isShutdown  ....");
    mbShutdown = isShutdown;
}
// End


status_t BootAnimation::readyToRun() {
    mAssets.addDefaultAssets();
    ...
        bool encryptedAnimation = atoi(decrypt) != 0 || !strcmp("trigger_restart_min_framework", decrypt);

    ZipFileRO* zipFile = NULL;
    // Modify by chenlei for shutdown animation
    if (mbShutdown)
    {
        if ((access(SYSTEM_SHUTANIMATION_FILE, R_OK) == 0) &&
                ((zipFile = ZipFileRO::open(SYSTEM_SHUTANIMATION_FILE)) != NULL)) {
            mZip = zipFile;
        }
    }
    else
    {
        if ((encryptedAnimation &&
                (access(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE, R_OK) == 0) &&
                ((zipFile = ZipFileRO::open(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE)) != NULL)) ||

                ((access(OEM_BOOTANIMATION_FILE, R_OK) == 0) &&
                ((zipFile = ZipFileRO::open(OEM_BOOTANIMATION_FILE)) != NULL)) ||

                ((access(SYSTEM_BOOTANIMATION_FILE, R_OK) == 0) &&
                ((zipFile = ZipFileRO::open(SYSTEM_BOOTANIMATION_FILE)) != NULL))) {
            mZip = zipFile;
        }
    }
    // End

    return NO_ERROR;
}

bootanimation_main.cpp

int main(int argc, char** argv)
{
#if defined(HAVE_PTHREADS)
    setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_DISPLAY);
#endif
    char value[PROPERTY_VALUE_MAX];
    property_get("debug.sf.nobootanimation", value, "0");
    int noBootAnimation = atoi(value);
    ALOGI_IF(noBootAnimation,  "boot animation disabled");
    // Add by chenlei for shutdown animation
    argc--;
    argv++;
    ALOGI_IF(true,  "boot animation argv %s",argv[0]);
    // End
    if (!noBootAnimation) {
        sp<ProcessState> proc(ProcessState::self());
        ProcessState::self()->startThreadPool();
        // create the boot animation object
        sp<BootAnimation> boot = new BootAnimation();
        // Add by chenlei for shutdown animation
        if (argc > 0) {
            if (!strcmp(argv[0],"-shutdown")) {
                boot->isShutdown(true);
            }
        }
        // End
        IPCThreadState::self()->joinThreadPool();

    }
    return 0;
}

ShutdownThread.java

private static void beginShutdownSequence(Context context) {
    ...
        pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
        //Modify by chenlei for shutdown animation
        boolean bShutdownAnimaton = SystemProperties.getBoolean("ro.shutdown.animation", false);
        if (!bShutdownAnimaton) {
            pd.show();
        } else {
            SystemProperties.set("service.bootanim.exit", "0");
            SystemProperties.set("ctl.start", "shutdownanim");
        }
        //End
        sInstance.mContext = context;
        ...
        sInstance.start();
    }

关机动画随着屏幕旋转怎么办？
frameworks\/base\/services\/core\/java\/com\/android\/server\/wm\/WindowManagerService.java中，在updateOrientationFromAppTokensLocked方法中，直接设置req = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE，表示水平或者竖直。

boolean updateOrientationFromAppTokensLocked(boolean inTransaction) {
        long ident = Binder.clearCallingIdentity();
        try {
            int req = getOrientationFromWindowsLocked();
            if (req == ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED) {
                req = getOrientationFromAppTokensLocked();
            }
            // Add by chenlei for shutdown animation
            int animation = SystemProperties.getInt("service.bootanim.exit", 1);
            Slog.w(TAG, "updateOrientationFromAppTokensLocked test=" + animation);
            if (animation == 0) {
                req = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
            }
            // End
            if (req != mForcedAppOrientation) {
                mForcedAppOrientation = req;
                //send a message to Policy indicating orientation change to take
                //action like disabling/enabling sensors etc.,
                mPolicy.setCurrentOrientationLw(req);
                if (updateRotationUncheckedLocked(inTransaction)) {
                    // changed
                    return true;
                }
            }

            return false;
        } finally {
            Binder.restoreCallingIdentity(ident);
        }
    }

在frameworks\/base\/services\/core\/java\/com\/android\/server\/power\/ShutdownThread.java中确保调用它。

private static void beginShutdownSequence(Context context) {
        synchronized (sIsStartedGuard) {
            if (sIsStarted) {
                Log.d(TAG, "Shutdown sequence already running, returning.");
                return;
            }
            sIsStarted = true;
        }

        ...
        pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
        //Modify by chenlei for shutdown animation
        boolean bShutdownAnimaton = SystemProperties.getBoolean("ro.shutdown.animation", false);
        if (!bShutdownAnimaton) {
            pd.show();
        } else {
            SystemProperties.set("service.bootanim.exit", "0");
            IWindowManager mWm = IWindowManager.Stub.asInterface(
                ServiceManager.getService("window"));
            try {
                mWm.updateOrientationFromAppTokens(new Configuration(), null);
            } catch (SecurityException e) {
                // expected
            } catch (RemoteException e) {
            }

            SystemProperties.set("ctl.start", "shutdownanim");
        }
        //End
        sInstance.mContext = context;
        ...

        // start the thread that initiates shutdown
        sInstance.mHandler = new Handler() {
        };
        sInstance.start();
    }