[MOD][GUIDE][JB 4.1.2][MULTI-THREAD/NATIVE] Lockscreen Blur Effect/MULTITHREAD - Galaxy S Advance I9070 Themes and Apps

Lockscreen Blur Effect
EDIT : Updated guide with Native function. Now it is ~60% faster​
I wanna share this mod with you which i made for my HarshJelly ROM. Before starting guide let's see what it does. Actually idea came from GravityBox Module.
What it does : It'll simply blur the background activity which you left before locking device (something like iOS 7's notification bar). Here are some caps to make it more clear.
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Yeah this mod is compatible with all Lockscreens (AOSP, Sammy's circle lockscreen, pattern etc). I tested this mod on my SGSA running stock TW 4.1.2. Since all TW roms are almost same, it should work on all TW 4.1.2 ROMs.
Before starting tutorial, let me clear one thing that i won't respond to posts without full log. If you found any difficulty, feel free to ask me but please keep in mind above sentence.
What is required?
android.policy.jar
Apktool
Notepad++
So, let's begin...
Decompile android.policy.jar
Navigate to : com\android\internal\policy\impl\sec
Download attached file, extract it and put WallpaperWidget$1.smali to above folder.
In the same folder, open WallpaperWidget.smali
before #instance field add following code
Code:
# static fields
.field static mutex_acquired:Z
Search for .field private mEnhancedWallpaper:Lcom/android/internal/policy/impl/sec/EnhancedWallpaperWidget; and add this below it
Code:
.field private mHandler:Landroid/os/Handler;
Search for iput-boolean v2, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mIsLiveWallpaper:Z and add this below
Code:
new-instance v0, Landroid/os/Handler;
invoke-direct {v0}, Landroid/os/Handler;-><init>()V
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mHandler:Landroid/os/Handler;
after # direct methods add following code
Code:
.method static constructor <clinit>()V
.locals 1
const-string v0, "harsh"
invoke-static {v0}, Ljava/lang/System;->loadLibrary(Ljava/lang/String;)V
const/4 v0, 0x1
sput-boolean v0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mutex_acquired:Z
return-void
.end method
Now search for .method public constructor <init>(Landroid/content/Context;Landroid/content/res/ConfigurationV and replace whole method with following :
Code:
.method public constructor <init>(Landroid/content/Context;Landroid/content/res/Configuration;)V
.locals 5
const/4 v4, 0x0
const/4 v3, -0x1
const/4 v2, 0x1
invoke-direct {p0, p1}, Landroid/widget/FrameLayout;-><init>(Landroid/content/Context;)V
const-string v0, "WallpaperWidget"
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->TAG:Ljava/lang/String;
iput-boolean v2, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mIsLiveWallpaper:Z
new-instance v0, Landroid/os/Handler;
invoke-direct {v0}, Landroid/os/Handler;-><init>()V
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mHandler:Landroid/os/Handler;
const/4 v0, 0x0
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mLockScreenWallpaperImage:Landroid/widget/ImageView;
const-string v0, "/data/data/com.sec.android.gallery3d/lockscreen_wallpaper.jpg"
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->PORTRAIT_WALLPAPER_IMAGE_PATH:Ljava/lang/String;
iput-object p1, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mContext:Landroid/content/Context;
invoke-virtual {p1}, Landroid/content/Context;->getContentResolver()Landroid/content/ContentResolver;
move-result-object v0
const-string v1, "lockscreen_wallpaper"
invoke-static {v0, v1, v2}, Landroid/provider/Settings$System;->getInt(Landroid/content/ContentResolver;Ljava/lang/String;I)I
move-result v0
if-ne v0, v2, :cond_0
iput-boolean v4, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mIsLiveWallpaper:Z
:cond_0
iget-boolean v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mIsLiveWallpaper:Z
if-eqz v0, :cond_1
:goto_0
return-void
:cond_1
new-instance v0, Landroid/widget/ImageView;
invoke-direct {v0, p1}, Landroid/widget/ImageView;-><init>(Landroid/content/Context;)V
iput-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mLockScreenWallpaperImage:Landroid/widget/ImageView;
iget-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mLockScreenWallpaperImage:Landroid/widget/ImageView;
sget-object v1, Landroid/widget/ImageView$ScaleType;->CENTER_CROP:Landroid/widget/ImageView$ScaleType;
invoke-virtual {v0, v1}, Landroid/widget/ImageView;->setScaleType(Landroid/widget/ImageView$ScaleType;)V
iget-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mLockScreenWallpaperImage:Landroid/widget/ImageView;
invoke-virtual {p0, v0, v3, v3}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->addView(Landroid/view/View;II)V
invoke-direct {p0}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->BlurImage()V
goto :goto_0
.end method
.method private BlurImage()V
.locals 2
new-instance v0, Ljava/lang/Thread;
new-instance v1, Lcom/android/internal/policy/impl/sec/WallpaperWidget$1;
invoke-direct {v1, p0}, Lcom/android/internal/policy/impl/sec/WallpaperWidget$1;-><init>(Lcom/android/internal/policy/impl/sec/WallpaperWidget;)V
invoke-direct {v0, v1}, Ljava/lang/Thread;-><init>(Ljava/lang/Runnable;)V
invoke-virtual {v0}, Ljava/lang/Thread;->start()V
return-void
.end method
.method static synthetic access$0(Lcom/android/internal/policy/impl/sec/WallpaperWidget;Landroid/graphics/Bitmap;Landroid/graphics/Bitmap;I)V
.locals 0
invoke-direct {p0, p1, p2, p3}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->blurImage(Landroid/graphics/Bitmap;Landroid/graphics/Bitmap;I)V
return-void
.end method
.method static synthetic access$1(Lcom/android/internal/policy/impl/sec/WallpaperWidget;)Landroid/os/Handler;
.locals 1
iget-object v0, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mHandler:Landroid/os/Handler;
return-object v0
.end method
.method private native blurImage(Landroid/graphics/Bitmap;Landroid/graphics/Bitmap;I)V
.end method
Now search for # virtual methods and add this code after it
Code:
.method public updateWallpaper()V
.locals 3
const-string v1, "/data/data/com.sec.android.gallery3d/lockscreen_wallpaper.jpg"
iput-object v1, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mWallpaperPath:Ljava/lang/String;
new-instance v0, Landroid/graphics/drawable/BitmapDrawable;
invoke-virtual {p0}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->getResources()Landroid/content/res/Resources;
move-result-object v1
iget-object v2, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mWallpaperPath:Ljava/lang/String;
invoke-direct {v0, v1, v2}, Landroid/graphics/drawable/BitmapDrawable;-><init>(Landroid/content/res/Resources;Ljava/lang/String;)V
iget-object v1, p0, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->mLockScreenWallpaperImage:Landroid/widget/ImageView;
invoke-virtual {v1, v0}, Landroid/widget/ImageView;->setImageDrawable(Landroid/graphics/drawable/Drawable;)V
return-void
.end method
Follow xperiacle's guide for TRANSPARENT STATUSBAR on lockscreen http://forum.xda-developers.com/showthread.php?t=2384892 (this is required, don't worry, it won't make it transparent)
From the extracted files, push libharsh.so to /system/lib/libharsh.so and chmod it to 644 (rw-r--r--)
Make sure that /data/data/com.sec.android.gallery3d/lockscreen_wallpaper.png & /data/data/com.sec.android.gallery3d/lockscreen_wallpaper.jpg file exists before you reboot your device. If it doesn't then put any valid png file there with name lockscreen_wallpaper.png/lockscreen_wallpaper.jpg and chmod it to 777
We're done :highfive: compile it and push it to device :good:
To add toggle for it, read here
Click to expand...
Click to collapse
What we're doing here?
Basically we are taking screenshot when device is getting locked and then we apply blur effect and sets it as wallpaper.
I know there are many way's to do it but i've preferred hacking WallpaperWidget's constructor. You can go for another way if you want.
Another thing to tell is that it depend on you device that how much time it'll require to do this process. On my device it nearly take 2 seconds (it depends on background). Multithreading can also be used. Read second post for more info and other tweaks., By default we're using Multi threading

---

Tips, Tricks & FAQs
Bugs & Remedies :
If multithreading is not enabled & device is woke up suddenly after locking then sometimes device stays unlocked for a moment --> Enabled multithreading or don't wake up device soon after locking it
[*] When mutithreading is enabled & device is suddenly woke up (soon after locking), it shows older image --> Disable mutithreading or don't wake up device soon after locking it
All bug are solved..
Click to expand...
Click to collapse
As this tutorial is written for 4.1.2 (API 16), we don't have native image processing support (which came in API 17).This is the reason why it takes long time to blur image. As told above, i' trying to implement native method for blurring image anybody interested in it can help me.
Tweaks :
Blur Radius : (Value in Hex)
Code:
.local v4, out:Landroid/graphics/Bitmap;
const/16 v5, [COLOR="Red"]0x19[/COLOR]
(lower radius --> better performance)
JPEG Quility: (Value in Hex)
Code:
.local v1, bytes:Ljava/io/ByteArrayOutputStream;
sget-object v5, Landroid/graphics/Bitmap$CompressFormat;->JPEG:Landroid/graphics/Bitmap$CompressFormat;
const/16 v6, [COLOR="red"]0x64[/COLOR]
Lower Quality --> better performance, weird colors
Click to expand...
Click to collapse
Changelog:
26th May 2014 --> Solved bug with delay while locking, Uses Multi Threading by default
xth February 2014 --> Native function Implementation (x > 6 )
6th February 2014 --> Initial Release
Click to expand...
Click to collapse

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GReat Work!!!!!!
Amazing Job, Harsh as usual you surprise us every time....Man keep it UP!!
Thankz a Ton..!:good::good::good::good::good::good::good:

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when i use this, can i still use normal wallpapers if i want? or does that need a toggle or something like that?

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mjz2cool said:
when i use this, can i still use normal wallpapers if i want? or does that need a toggle or something like that?
Click to expand...
Click to collapse
+1
@BOOTMGR, Please make a short tutorial (if possible) for setting up a Toggle to switch it on or off from the Settings app :good:

---

Updated thread with new implementation. Now we are using Native function to blur image which is ~60% faster than previous implementation. Follow tutorial again if you've already done so.
mjz2cool said:
when i use this, can i still use normal wallpapers if i want? or does that need a toggle or something like that?
Click to expand...
Click to collapse
Sami Kabir said:
+1
@BOOTMGR, Please make a short tutorial (if possible) for setting up a Toggle to switch it on or off from the Settings app :good:
Click to expand...
Click to collapse
Adding toggle in secsetting is easy but only reason behind not providing it is that some people would have enabled AOSP lockscreen in that case method will be slightly different. But you can follow this tutorial to add toggle for it using build.prop
How to add Toggle :
Follow main tutorial
Inside WallpaperWidget.smali, search for invoke-direct {p0}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->BlurImage()V and add following code above it
Code:
const-string v0, "ro.harsh.blurlockscreen"
invoke-static {v0, v2}, Landroid/os/SystemProperties;->getBoolean(Ljava/lang/String;Z)Z
move-result v0
if-eqz v0, :cond_2
Search below for .end method (2 - 3 lines down) and add this below it
Code:
:cond_2
invoke-direct {p0}, Lcom/android/internal/policy/impl/sec/WallpaperWidget;->setLockScreenWallpaper()V
goto :goto_0
That's all. Compile it.
Now you can toggle its state by adding ro.harsh.blurlockscreen=true or ro.harsh.blurlockscreen=false
You can also type in terminal setprop ro.harsh.blurlockscreen true/false to toggle state on the fly.
Click to expand...
Click to collapse

---

off topic: You keep doing stock jb more and more better

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I'm Sorry But i'm Naive I cannot Follow this tutorial Can you Make a Flashable zip Plz Plz Plz Plz Plzzzzzzzzzzzzzzzzzzzzz

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rajeev994 said:
I'm Sorry But i'm Naive I cannot Follow this tutorial Can you Make a Flashable zip Plz Plz Plz Plz Plzzzzzzzzzzzzzzzzzzzzz
Click to expand...
Click to collapse
He did on his ROM.

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shut_down said:
He did on his ROM.
Click to expand...
Click to collapse
No he did not I'm using his harshjelly
Even if he did can you tell me how to do that
Sent from my GT-I9070 using Tapatalk 4

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rajeev994 said:
No he did not I'm using his harshjelly
Even if he did can you tell me how to do that
Sent from my GT-I9070 using Tapatalk 4
Click to expand...
Click to collapse
It is written here step by step what to do.
If it is not, then I am sure he will add it to next release.

---

Upgrading Android OS...
Opening apllications...
I'm getting this again and again after I reboot my device, I think the files aren't compatible with my 4.1.2 TW deodexed..
but this mod looks so cool, I want this

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http://www.xda-developers.com/android/blur-the-lock-screen-on-your-samsung-galaxy-s-advance/
You got to the portal

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Seems interesting, great work! btw is this tut possible for CM11 roms? I would like to try compiling this on our CM11 builds

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Is there anyway to make this into an xposed module?

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Geddd said:
Upgrading Android OS...
Opening apllications...
I'm getting this again and again after I reboot my device, I think the files aren't compatible with my 4.1.2 TW deodexed..
but this mod looks so cool, I want this
Click to expand...
Click to collapse
It should be. Check again that & make sure you did everything properly. Did you pushed libharsh.so to /system/lib and changed its permission?
JovieBrett said:
Seems interesting, great work! btw is this tut possible for CM11 roms? I would like to try compiling this on our CM11 builds
Click to expand...
Click to collapse
You can do it easily by Xposed. Gravitybox doesnot suppot this on 4.1.2 because of unavailable API
francop311 said:
Is there anyway to make this into an xposed module?
Click to expand...
Click to collapse
Making this available through xposed is very easy. I make module later when i'll be free.

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Awesoem!!! Looks Cool!

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BOOTMGR said:
It should be. Check again that & make sure you did everything properly. Did you pushed libharsh.so to /system/lib and changed its permission?
Yes bro, I did follow the steps carefully and push the lib file (rw-r-r). I tried to do it again now it boot up but my homescreen is just blinking with black screen. If you have enough time can you please check my work?
here's my output classout folder and my untouched android policy..
if you're just not busy bro, I can wait. Thank you.
Click to expand...
Click to collapse

---

Geddd said:
BOOTMGR said:
It should be. Check again that & make sure you did everything properly. Did you pushed libharsh.so to /system/lib and changed its permission?
Yes bro, I did follow the steps carefully and push the lib file (rw-r-r). I tried to do it again now it boot up but my homescreen is just blinking with black screen. If you have enough time can you please check my work?
here's my output classout folder and my untouched android policy..
if you're just not busy bro, I can wait. Thank you.
Click to expand...
Click to collapse
Compile attached sources (don't forget to add META-INF folder). There were some additional things in your constructor. Please if it doesn't work then provide me full log.
Click to expand...
Click to collapse

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BOOTMGR said:
Geddd said:
Compile attached sources (don't forget to add META-INF folder). There were some additional things in your constructor. Please if it doesn't work then provide me full log.
Click to expand...
Click to collapse
Still no luck sorry but I don't know how to make a log/logcat..
Anyway, but thanks again sir.
Click to expand...
Click to collapse