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Hash : f7ca3c5a
Author :
Date : 2020-10-19T15:34:03
Build: Improve Arm 32-bit cross-comp./packaging - Set CPU_TYPE=arm if performing a 32-bit build on an AArch64 system. This eliminates the need to use a CMake toolchain file. - Set RPMARCH=armv7hl if building on a 32-bit Arm system with an FPU. - Set RPMARCH=armv7hl and DEBARCH=armhf if performing a 32-bit build using a gnueabihf toolchain. - If performing a 32-bit Arm build, generate a 32-bit supplementary DEB package for AArch64 systems.
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ReadMe.txt
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libjpeg-turbo is a JPEG image codec that uses SIMD instructions to accelerate baseline JPEG compression and decompression on x86, x86-64, Arm, PowerPC, and MIPS systems, as well as progressive JPEG compression on x86 and x86-64 systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs. libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API. libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface. libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated derivative of libjpeg v6b developed by Miyasaka Masaru. The TigerVNC and VirtualGL projects made numerous enhancements to the codec in 2009, and in early 2010, libjpeg-turbo spun off into an independent project, with the goal of making high-speed JPEG compression/decompression technology available to a broader range of users and developers.