Replace libjpeg by libjpeg-turbo
libjpeg-turbo is fork of the original libjpeg project. It contains numerous performance related enhancements and is at least twice faster in JPEG compression/decompression than original libjpeg on platforms with MMX/SSE instruction set. It has same API/ABI like original libjpeg and also runs on non-SSE platforms where is around 25% faster.
- Name: Adam Tkac
- Targeted release: Fedora 14
- Last updated: 2010-05-31
- Percentage of completion: 0%
Everything is written in summary.
Benefit to Fedora
Much faster JPEG compression/decompression library. JPEG codec is widely used and it is good to speed up core library which implements it. Additionally, libjpeg-turbo is developed in more open-source manner than original libjpeg.
All packages which depends on libjpeg have to be rebuilt against libjpeg-turbo. There are no API/ABI changes so temporary symlink libjpeg->libjpeg-turbo will be provided to make this task easier.
How To Test
You can use any program which uses libjpeg-turbo code. You should try to perform JPEG compression/decompression to and check if you don't see artefacts. You can also compare speed of the libjpeg-turbo against libjpeg, you should be able to visually check that libjpeg-turbo is really faster.
A lot faster JPEG compression/decompression
462 packages (repoquery --alldeps --whatrequires libjpeg |wc -l)
Use libjpeg when libjpeg-turbo hits some serious problems. Both libraries can coexist.
libjpeg library has been replaced by libjpeg-turbo library which has same API/ABI but is at least twice faster on all primary architectures and about 25% faster on secondary architectures