I want to apply some sort of image filter to whatever is being displayed on the screen of an android device. The simplest example of the image filter could be a Sepia filter applied to the frame buffer just before it is displayed on the screen. And just to make sure, i want this effect system wide and not just in my app.
apply filters to frame buffer just before it is displayed
622 views Asked by thunderbird At
1
There are 1 answers
Related Questions in ANDROID
- Use translateProvider.useLoader with Typescript
- Optional method in base class
- Putting Lambdas in OR statement
- Deleting namespace in Socket IO
- Angularjs+Typescript directive implementing $compile
- Typescript type inference inside for loop
- Why void functions are allowed in left part of assignment in Typescript?
- Tools for Apache Cordova - TypeScript debugger jumps to wrong line
- Typescript - is there a way to specify a global reference?
- How to angularjs app.service and $q in typescript
Related Questions in GRAPHICS
- Use translateProvider.useLoader with Typescript
- Optional method in base class
- Putting Lambdas in OR statement
- Deleting namespace in Socket IO
- Angularjs+Typescript directive implementing $compile
- Typescript type inference inside for loop
- Why void functions are allowed in left part of assignment in Typescript?
- Tools for Apache Cordova - TypeScript debugger jumps to wrong line
- Typescript - is there a way to specify a global reference?
- How to angularjs app.service and $q in typescript
Related Questions in SURFACEFLINGER
- Use translateProvider.useLoader with Typescript
- Optional method in base class
- Putting Lambdas in OR statement
- Deleting namespace in Socket IO
- Angularjs+Typescript directive implementing $compile
- Typescript type inference inside for loop
- Why void functions are allowed in left part of assignment in Typescript?
- Tools for Apache Cordova - TypeScript debugger jumps to wrong line
- Typescript - is there a way to specify a global reference?
- How to angularjs app.service and $q in typescript
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
To make the effect system-wide, you would need to modify SurfaceFlinger to apply the filter.
In Android 5.0 "Lollipop" you can see a prototype implementation of code that modifies the output to improve the contrast for people who are color blind. See the Daltonizer code and how it's hooked into
doDisplayComposition()in SurfaceFlinger.cpp. Note this applies the effect during surface composition, and consequently disables Hardware Composer.There's no way to do this system-wide from an app. If there were, you could wreak all sorts of havoc on the system.