My project use Qt 5.4.0, Some part of my app will decode jpeg file to
YUV buffer, to achieve this with fast speed I choose libjpeg-turbo(I use
the prebuilt iOS version 1.3.1). It works well in Windows and OSX, but
failed in iOS. The app fail to launch with the following message:
Wrong JPEG
On Wednesday December 17 2014 20:00:30 Liang Jian wrote:
Wrong JPEG library version: library is 62, caller expects 80
I guess this is because qt library shipped in iOS are static libraries
and Qt itself will also link against libjpeg, and if I specify -lturbojpeg
in my .pro file, the
First of all, thank you for the reply!
libjpeg-turbo uses NEON instruction to accelerate decoding, it should
give significant performance boost. And since QImage will decode jpeg file
into ARGB pixel format which will introduce YUV--RGB color space
conversion, it is slow to do it in CPU.
I will try it, thanks.
On Wed, Dec 17, 2014 at 10:03 PM, René J.V. rjvber...@gmail.com wrote:
On Wednesday December 17 2014 21:21:29 Liang Jian wrote:
The second way require modification of libjpeg-turbo ( maybe remove
the
entire old libjpeg style API ) which is beyond me.
It's
