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Diffstat (limited to 'src/3rdparty/libwebp/README')
| -rw-r--r-- | src/3rdparty/libwebp/README | 89 |
1 files changed, 78 insertions, 11 deletions
diff --git a/src/3rdparty/libwebp/README b/src/3rdparty/libwebp/README index 381b927..90f8f10 100644 --- a/src/3rdparty/libwebp/README +++ b/src/3rdparty/libwebp/README @@ -4,7 +4,7 @@ \__\__/\____/\_____/__/ ____ ___ / _/ / \ \ / _ \/ _/ / \_/ / / \ \ __/ \__ - \____/____/\_____/_____/____/v0.5.0 + \____/____/\_____/_____/____/v0.5.1 Description: ============ @@ -20,7 +20,7 @@ https://chromium.googlesource.com/webm/libwebp It is released under the same license as the WebM project. See http://www.webmproject.org/license/software/ or the -file "COPYING" file for details. An additional intellectual +"COPYING" file for details. An additional intellectual property rights grant can be found in the file PATENTS. Building: @@ -84,6 +84,73 @@ be installed independently using a minor modification in the corresponding Makefile.am configure files (see comments there). See './configure --help' for more options. +Building for MIPS Linux: +------------------------ +MIPS Linux toolchain stable available releases can be found at: +https://community.imgtec.com/developers/mips/tools/codescape-mips-sdk/available-releases/ + +# Add toolchain to PATH +export PATH=$PATH:/path/to/toolchain/bin + +# 32-bit build for mips32r5 (p5600) +HOST=mips-mti-linux-gnu +MIPS_CFLAGS="-O3 -mips32r5 -mabi=32 -mtune=p5600 -mmsa -mfp64 \ + -msched-weight -mload-store-pairs -fPIE" +MIPS_LDFLAGS="-mips32r5 -mabi=32 -mmsa -mfp64 -pie" + +# 64-bit build for mips64r6 (i6400) +HOST=mips-img-linux-gnu +MIPS_CFLAGS="-O3 -mips64r6 -mabi=64 -mtune=i6400 -mmsa -mfp64 \ + -msched-weight -mload-store-pairs -fPIE" +MIPS_LDFLAGS="-mips64r6 -mabi=64 -mmsa -mfp64 -pie" + +./configure --host=${HOST} --build=`config.guess` \ + CC="${HOST}-gcc -EL" \ + CFLAGS="$MIPS_CFLAGS" \ + LDFLAGS="$MIPS_LDFLAGS" +make +make install + +CMake: +------ +The support for CMake is minimal: it only helps you compile libwebp, cwebp and +dwebp. + +Prerequisites: +A compiler (e.g., gcc with autotools) and CMake. +On a Debian-like system the following should install everything you need for a +minimal build: +$ sudo apt-get install build-essential cmake + +When building from git sources, you will need to run cmake to generate the +configure script. + +mkdir build && cd build && cmake ../ +make +make install + +If you also want cwebp or dwebp, you will need to enable them through CMake: + +cmake -DWEBP_BUILD_CWEBP=ON -DWEBP_BUILD_DWEBP=ON ../ + +or through your favorite interface (like ccmake or cmake-qt-gui). + +Gradle: +------- +The support for Gradle is minimal: it only helps you compile libwebp, cwebp and +dwebp and webpmux_example. + +Prerequisites: +A compiler (e.g., gcc with autotools) and gradle. +On a Debian-like system the following should install everything you need for a +minimal build: +$ sudo apt-get install build-essential gradle + +When building from git sources, you will need to run the Gradle wrapper with the +appropriate target, e.g. : + +./gradlew buildAllExecutables + SWIG bindings: -------------- @@ -151,8 +218,8 @@ If input size (-s) for an image is not specified, it is assumed to be a PNG, JPEG, TIFF or WebP file. Options: - -h / -help ............ short help - -H / -longhelp ........ long help + -h / -help ............. short help + -H / -longhelp ......... long help -q <float> ............. quality factor (0:small..100:big) -alpha_q <int> ......... transparency-compression quality (0..100) -preset <string> ....... preset setting, one of: @@ -274,7 +341,7 @@ Use following options to convert into alternate image formats: -yuv ......... save the raw YUV samples in flat layout Other options are: - -version .... print version number and exit + -version ..... print version number and exit -nofancy ..... don't use the fancy YUV420 upscaler -nofilter .... disable in-loop filtering -nodither .... disable dithering @@ -286,8 +353,8 @@ Use following options to convert into alternate image formats: -flip ........ flip the output vertically -alpha ....... only save the alpha plane -incremental . use incremental decoding (useful for tests) - -h ....... this help message - -v ....... verbose (e.g. print encoding/decoding times) + -h ........... this help message + -v ........... verbose (e.g. print encoding/decoding times) -quiet ....... quiet mode, don't print anything -noasm ....... disable all assembly optimizations @@ -303,7 +370,7 @@ Usage: vwebp in_file [options] Decodes the WebP image file and visualize it using OpenGL Options are: - -version .... print version number and exit + -version ..... print version number and exit -noicc ....... don't use the icc profile if present -nofancy ..... don't use the fancy YUV420 upscaler -nofilter .... disable in-loop filtering @@ -311,7 +378,7 @@ Options are: -noalphadither disable alpha plane dithering -mt .......... use multi-threading -info ........ print info - -h ....... this help message + -h ........... this help message Keyboard shortcuts: 'c' ................ toggle use of color profile @@ -353,7 +420,7 @@ vwebp. Usage: gif2webp [options] gif_file -o webp_file Options: - -h / -help ............ this help + -h / -help ............. this help -lossy ................. encode image using lossy compression -mixed ................. for each frame in the image, pick lossy or lossless compression heuristically @@ -637,7 +704,7 @@ an otherwise too-large picture. Some CPU can be saved too, incidentally. Bugs: ===== -Please report all bugs to our issue tracker: +Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp Patches welcome! See this page to get started: http://www.webmproject.org/code/contribute/submitting-patches/ |