sideshowcoder / jpgcompressor

Picture compression for Titanium using UI

Titanium JPGCompressor

Author: Philipp Fehre Website Repository: https://github.com/sideshowcoder/jpgcompressor

Description

Compression

Passing through UIImageJPEGRepresentation option to compress and scale images passed as a TiBlob. The resulting image is write to e temporary file if the name is passed as a secound argument or passed back as a TiBlob if no name is given.

The compression quality is calculated by check the received data size against the desired size the ratio is taken as the compression factor. If wortQuality limit is set it is the take as the compression factor if the ratio calculated drops below.

Example

100kb Image desired 50kb compressed -> compression factor 0.5 100kb Image desired 50kb compressed, worst quality set to 0.6 -> compression factor 0.6

Scaling

Scale images using UIGraphicsBeginImageContext to fit the image in the desired size

Usage

See example/app.js and https://github.com/sideshowcoder/jpgcompressor/blob/master/documentation/index.md

Testing

Run the example app and follow it's log see example/app.js for more details

Setup

Install the CLI tools via npm install appcelerator -g and install the needed sdk after by running appc setup and titanium sdk install 3.5.0.GA. Now you can build the module by going into the folder and run python build.py.

NOTE: Depending on your python setup it might complain about missing markdown This can be solved by running sudo easy_install markdown

jpgcompressor's Issues

No EXIF data

Is it normal that when you compress a picture, the EXIF data has gone? It's a bit problematic because of the Orientation tag that is mandatory in order to display a picture correctly.

64bit... again...

I know, I did the PR, but it doesn't work.

I did it like announced here: http://www.appcelerator.com/blog/2014/11/alpha-version-of-titanium-sdk-64-bit-support-now-available/

and here

https://jira.appcelerator.org/browse/TIMOB-18065

But the architecture remains to "armv7 i386"

Do you have an idea?

Build Failed

I'm assuming the module must be built before being used, unless there is a precompiled version somewhere that I am not seeing??

When I attempt to build the module in Titanium, I'm getting the following error:

Traceback (most recent call last):
  File "/Users/allenhartwig/Downloads/sideshowcoder-jpgcompressor-fd04563/build.py", line 191, in <module>
    compile_js(manifest,config)
  File "/Users/allenhartwig/Downloads/sideshowcoder-jpgcompressor-fd04563/build.py", line 69, in compile_js
    from compiler import Compiler
ImportError: cannot import name Compiler

64bit

Could you be so kind to update this module to 64bit architecture?

Build Failure on Device

Hi, this works extremely well on the simulator, so I'm hoping to fix it on the local device. I've added:

com.sideshowcoder.jpgcompressor

to my tiapp.xml but continue to get this error when I try to build for testing on an iPhone 4 (iOS 5.0):

[ERROR]
[ERROR] Error: Traceback (most recent call last):
File "/Users/mfogg/Library/Application Support/Titanium/mobilesdk/osx/2.0.2.GA/iphone/builder.py", line 1465, in main
execute_xcode("iphoneos%s" % iphone_version,args,False)
File "/Users/mfogg/Library/Application Support/Titanium/mobilesdk/osx/2.0.2.GA/iphone/builder.py", line 1224, in execute_xcode
output = run.run(args,False,False,o)
File "/Users/mfogg/Library/Application Support/Titanium/mobilesdk/osx/2.0.2.GA/iphone/run.py", line 41, in run
sys.exit(rc)
SystemExit: 65

The odd part is, when I erase that line from the tiapp.xml the project builds fine and installs on the phone correctly (although, obviously it complains that the module is missing). Any idea what the issue may be?