libpng

pngcrush caught libpng error:

由 会有一股神秘感。 提交于 2019-12-07 14:09:46
解决下面情况： 1. 首先要用photoshop将png文件打开后另存为png 文件，在弹出的交织与否时，选择否。 2. 还要看一下工程里面的文件，有时多弄了几个文件相同文件名时，记得去掉那些不用的，否则若只更换一处的话，还是有错误。 应用在在模拟器上调试一点问题没有，但一放到真机上调试就出现copypngfile 的错误，错误信息如下: CopyPNGFile /Users/gongihou/Library/Developer/Xcode/DerivedData/DLZ-frborfduejxrajgpkfdaipygijow/Build/Products/Debug-iphoneos/DLZ.app/zhuangtai.png DLZ/zhuangtai.png cd /Users/gongihou/Documents/910 setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer

对象存储的发展历程（下）——从软件到服务的“升级”

由 爷，独闯天下 提交于 2019-12-07 13:39:30
导语 在《从“软件”到“服务”——【对象存储】的发展历程（上）》中，我们和大家在对象存储大规模普及之前，大量的数据存储和处理是怎么实现的。但这些方案大都专注于解决其中一类问题，缺少足够的普适性。那么对象存储出现后，究竟解决了什么问题？优势又为何呢？ 1.软件 V.S 服务 跟上一篇提到的各个软件相比，对象存储与之最大的区别不在于实现的机制，而在于形态从软件到服务的一个大飞跃。在这儿我想用一个可能不太恰当的比喻来说这事——传统的体重计。 不管是电子的还是机械的，他只是一个工具，我们评价的标准更多是价格、准确度、易用性、量程。而互联网的体重计，能帮你记录你的体重变化曲线，你关心的可能更多是数据联动、可视化、以及根据你的体重给出的建议。当然，如果你真的对减肥有强烈的需求，那么找一个合适的教练，由教练来指导你的减肥流程才合适，而互联网体重计只是教练手中的一个工具而已。 服务跟软件相比，有几个大的不同点： 首先是自由演化——对象存储的客户可以只关心SLA，并不关心你实现SLA的手段，所以演化更自由； 其次是使用服务完全不用关心运维问题——运维问题完全交给服务提供商来解决； 最后是采用服务形态后，业务的架构方式更灵活——比如控制面和数据面分离更轻松等。 作为一个部署在云端的服务，它的接口和实现是分离的，也就是说我可以在保持接口不变的情况下持续演化实现。我们可以想象一下第一次在 AWS S3

Libpng error at :app:mergeDebugResources - Gradle Error 42

由 南楼画角 提交于 2019-12-07 05:56:37
问题 When compiling my app for debug in Android Studio, I get the following error(s): Failed to run command: C:\Users\Farbod\Android-SDK\build-tools\21.1.2\aapt.exe s -i C:\Users\Farbod\AndroidStudioProjects\MyApp\app\src\main\res\drawable-hdpi\img_myImage.png -o C:\Users\Me\AndroidStudioProjects\MyApp\app\build\intermediates\res\debug\drawable-hdpi-v4\img_myImage.png Error Code: 42 Output: C:\Users\Me\AndroidStudioProjects\MyApp\app\src\main\res\drawable-hdpi\img_myImage.png: libpng warning: IDAT

libpng load file from memory buffer

由 大兔子大兔子 提交于 2019-12-07 04:47:21
问题 I tried looking through the libpng documentation, but didn't find what I was looking for. I have a PNG file fully in a memory buffer, how can I load this file (apart from the obvious solution of creating a temporary file)? Not sure if it's relevant, but I'm calling libpng from Python using ctypes. 回答1: I found this article which describes pretty well how to read a PNG file from memory. Summarized, you have to create a custom callback function and give it to libpng using png_set_read_fn . Then

GraphicsMagick CgBI unknown critical chunk

由 帅比萌擦擦* 提交于 2019-12-07 01:21:31
问题 I am using GraphicsMagick and currently running into the following issue: when executing gm identify <filename>.png I'm getting the following error: gm identify: CgBI: unknown critical chunk (<filename>.png) gm identify: Request did not return an image. This is a png extracted from an iPhone. Though it may not contain an actual image, I do need the image info. Tried opening it with several editors: The png does open in Paint with the right height x width but as completely white. The png does

Linking libraries with incompatible dependecies

由 。_饼干妹妹 提交于 2019-12-06 23:15:39
问题 I'm working on a C++ project that needs two third party libraries ( libfoo.so and libbar.so ). My operating system is Linux. libfoo.so is dynamically linked to libpng14.so.14 (1.4.8) (EDIT 1) libbar.so seems to be statically linked to an unknwon version of libpng libpng 1.2.8 (EDIT 1) I say "seems to be" because: ldd libbar.so doesn't show nothing about png nm -D libbar.so | grep png_read_png says "004f41b0 T png_read_png" less libbar.so | grep png_read_png says "4577: 004f41b0 738 FUNC

meld - gi._glib.GError: Icon 'meld-change-apply-right' not present in theme. What is wrong with the installation?

由 十年热恋 提交于 2019-12-06 20:58:03
问题 I have managed to install the meld 3.14.2 and all the dependency packages, by compiling each package from source and all are installed on a NFS share with --prefix=<base>/meld for the meld tool && --prefix=<base>/meld/deps for the dependencies. Finally, I invoked the tool and I can see the GUI. But when I try to do some functionality testing, it throws me errors. I have never used the tool. So, I don't know how it is supposed to work exactly. But users have pointed out the following error,

Linking libpng to android native project

由 て烟熏妆下的殇ゞ 提交于 2019-12-06 12:12:03
问题 I am having problems trying to load libpng in my native android project. It seems, that the compiler doesn't recognize libpng functions, but does recognize types (like png_byte). It compiles normally with types, but throws errors if I add functions. Here's compile output (windows 7 cmd): D:\Dropbox\Workspace\Eclipse\GhostEngine\jni>C:\android-ndk-r8\ndk-build "Compile++ thumb : ghost <= ImagePng.cpp "Compile++ thumb : ghost <= MainAndroid.cpp "Compile++ thumb : ghost <= PlatformAndroid.cpp

libpng framework on OS X

由 寵の児 提交于 2019-12-06 09:27:16
I'm looking for an Xcode project file that will let me trivially build a dynamic framework for libpng to embed in a Mac OS X application bundle. I found this project for libpng 1.2.8 , but I need something reasonably current. I can make the project file myself, but I'd rather not reinvent the wheel if I don't have to. Does this already exist, and if so, where? Check out the KyngChaos UnixImageIO framework . It includes libpng. If you download the libpng framework code from http://www.libpng.org/pub/png/libpng.html it contains an xcode project that builds the framework. 来源： https:/

Error with homebrew + opencv + libpng

由 老子叫甜甜 提交于 2019-12-06 01:10:08
问题 On Mac OS Maverick I have installed OpenCV with a brew install opencv . I created a simple program (copied from this tutorial). Compilation worked fine but when running the executable I get the following error: dyld: Library not loaded: /usr/local/lib/libpng16.16.dylib Referenced from: /usr/local/lib/libopencv_highgui.2.4.dylib Reason: Incompatible library version: libopencv_highgui.2.4.dylib requires version 33.0.0 or later, but libpng16.16.dylib provides version 32.0.0 Trace/BPT trap: 5 I
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