libpng

php安装gd库

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-02-14 08:19:56
安装gd需要以下库： gd-2.0.33.tar.gz 　　http://www.boutell.com/gd/ jpegsrc.v6b.tar.gz 　　http://www.ijg.org/ libpng-1.2.7.tar.tar 　　http://sourceforge.net/projects/libpng/ zlib-1.2.2.tar.gz 　　http://sourceforge.net/projects/zlib/ freetype-2.1.9.tar.gz　　http://sourceforge.net/projects/freetype/ 1、安装 zlib - zlib-1.2.8.tar.gz wget ftp://ftp.sunfreeware.com/pub/freeware/SOURCES/zlib-1.2.3.tar.gz tar -zxf zlib-1.2.3.tar.gz cd zlib-1.2.3 ./configure --prefix=/usr/local/zlib make make install 2、安装 jpeg - 我用的是 jpegsrc.v9.tar.gz wget ftp://ftp.sunfreeware.com/pub/freeware/SOURCES/jpeg.tar.gz 安装前先创建jpeg安装文件所需(如下

png2theora.c: undefined reference to `png_sizeof

由 北战南征 提交于 2020-01-26 00:39:08
在编译libtheora的时候出错了。原因是，使用的libpng太新（1.6/1.7），需要换回老的版本。 解决办法，下载编译libpng15即可： https://sourceforge.net/projects/libpng/files/libpng15 ./configure make make install 来源： CSDN 作者： 柳鲲鹏 链接： https://blog.csdn.net/quantum7/article/details/104047508

Can't compile libpng 1.6 on windows via cmake: Cannot open include file: 'zlib.h': No such file or directory

由 假装没事ソ 提交于 2020-01-17 05:59:14
问题 VS 2015 Update 1. Prebuilt zlib is extracted into project/zlib. find_package finds it alright with proper vars supplied. It adds the dir as include in cl invocation: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\x86_amd64\CL.exe /c /IC:\project\zlib\include /IC:\project\libpng /nologo /W3 /WX- /O2 /Ob2 /D WIN32 /D _WINDOWS /D NDEBUG /D _CRT_SECURE_NO_DEPRECATE /D "CMAKE_INTDIR=\"Release\"" /D _MBCS /Gm- /MD /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"png16_static.dir

Configuring PNG on ImageMagick on a Linux Server

由 Deadly 提交于 2020-01-14 13:11:53
问题 I have been trying to run the following script on ImageMagick on a Linux server convert resized.png -gravity Center -crop 1024X768+0+0 +repage flower.png but have been hitting the following error: convert: no decode delegate for this image format `PNG' @ error/constitute.c/ReadImage/501. convert: no images defined `flower.png' @ error/convert.c/ConvertImageCommand/3212. It looks like there is no delegate for PNG. When I run: identify -version I get this result that shows that the PNG delegate

import matplotlib.pyplot gives ImportError: dlopen(…) Library not loaded libpng15.15.dylib

由 喜夏-厌秋 提交于 2020-01-11 05:56:08
问题 Importing pyplot gives an error: In [1]: import matplotlib In [2]: import matplotlib.pyplot as plt ImportError Traceback (most recent call last) <ipython-input-2-eff513f636fd> in <module>() ----> 1 import matplotlib.pyplot as plt /Users/r8t/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py in <module>() 25 26 import matplotlib ---> 27 import matplotlib.colorbar 28 from matplotlib import style 29 from matplotlib import _pylab_helpers, interactive /Users/r8t/anaconda/lib/python2.7/site

libpng error: Read Error

由 浪尽此生 提交于 2020-01-06 08:42:19
问题 I has some png image. I open it. Than i save it to file. And when i try to open saved image i have the problem. libpng error: Read Error on png_read_rows Here is the writing code: png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); png_infop info_ptr = png_create_info_struct(png_ptr); //created png struct setjmp(png_jmpbuf(png_ptr)) //signed png_init_io(png_ptr, file); png_set_IHDR(png_ptr, info_ptr, width, height, 8, PNG_COLOR_TYPE_RGBA, PNG_INTERLACE_NONE

libpng error: Read Error

由 我是研究僧i 提交于 2020-01-06 08:41:12
问题 I has some png image. I open it. Than i save it to file. And when i try to open saved image i have the problem. libpng error: Read Error on png_read_rows Here is the writing code: png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); png_infop info_ptr = png_create_info_struct(png_ptr); //created png struct setjmp(png_jmpbuf(png_ptr)) //signed png_init_io(png_ptr, file); png_set_IHDR(png_ptr, info_ptr, width, height, 8, PNG_COLOR_TYPE_RGBA, PNG_INTERLACE_NONE

Xcode 6 giving “LIBPNG ERROR TOO MANY IDAT'S FOUND” error

由 血红的双手。 提交于 2020-01-05 10:32:03
问题 Are there good tools for checking PNG files for issues that can be how I have ended up here? At first i feared with was an issue with the many thousands of "tiles" in my learning app (at 3 resolutions), but it seems one or more specific png files have an internal issue. 回答1: pngcheck works well and is a good resource. In addition, an OS-X app (in the app store) called "Quick Opaque" easily stripped out the (unneeded) alpha channel data from my png file, which cured the IDAT problem. 来源： https

Xcode 6 giving “LIBPNG ERROR TOO MANY IDAT'S FOUND” error

由 我只是一个虾纸丫 提交于 2020-01-05 10:30:04
问题 Are there good tools for checking PNG files for issues that can be how I have ended up here? At first i feared with was an issue with the many thousands of "tiles" in my learning app (at 3 resolutions), but it seems one or more specific png files have an internal issue. 回答1: pngcheck works well and is a good resource. In addition, an OS-X app (in the app store) called "Quick Opaque" easily stripped out the (unneeded) alpha channel data from my png file, which cured the IDAT problem. 来源： https

Obtain text fields from a png file

由 夙愿已清 提交于 2020-01-02 10:07:35
问题 Nothing seems to work so far. I got to see with pnginfo the following message: concept_Sjet_dream6.png... Image Width: 200 Image Length: 240 Bitdepth (Bits/Sample): 8 Channels (Samples/Pixel): 2 Pixel depth (Pixel Depth): 16 Colour Type (Photometric Interpretation): GRAYSCALE with alpha channel Image filter: Single row per byte filter Interlacing: No interlacing Compression Scheme: Deflate method 8, 32k window Resolution: 11811, 11811 (pixels per meter) FillOrder: msb-to-lsb Byte Order:
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