Hoping to get help from someone familiar with AVIF image format and the DAV1D codec.
I am a Windows/C/C++ programmer trying to integrate HEIF and AVIF image functionality into an application I am developing (just decoding for now). So I used the LIBHEIF library with the libde265 and dav1d codecs.
I built and linked everything fine. HEIF images work but AVIFs do not. I am getting the “unspecified error”, even with the example.avif included with LIBHEIF.
I debugged everything step by step. The image has 4 OBUs: two OBU_SEQ_HDR, one OBU_FRAME_HDR, and one OBU_TILE_GRP. Does this sound right to you? The parser does not seem to find any information that it can actually decode, like a frame. The function output_picture_ready() always returns false. So at the end, the parser just returns the error EAGAIN.
You may refer to Build libdav1d using Microsoft Visual C++? to build the native windows dll.
libheif v1.12.0 => dav1d version 0.9.2
libheif master => dav1d version 1.0.0
To build x86_64 dll, use native x64 console https://learn.microsoft.com/en-us/cpp/build/how-to-enable-a-64-bit-visual-cpp-toolset-on-the-command-line?view=msvc-170
Related
Basically, I wrote a program using Go and the binding for the Qt gui library (github.com/bluszcz/cutego). I moved over to the cutego fork because the original binding (github.com/therecipe/qt) isn't being maintained anymore.
My app works great but I need it to run on a machine that needs nothing installed. I'm new to Go so please forgive my ignorance. I followed the instructions to build a static executable here: (https://github.com/therecipe/qt/wiki/Deploying-Windows-to-Windows-64-bit-Static)
I get a few deprecated code warnings but the code does compile. The problem is I still end up with a dynamically compiled executable. I ran ldd using MINGW64 and I get:
Qt5Core.dll => not found
Qt5Gui.dll => not found
Qt5Widgets.dll => not found
As mentioned I am pretty new to Go, but I am also new to this kind of language as I have only developed using Python and VBA. I haven't found any clues online, I think because there's something really obvious that I am missing that everyone else knows about already.
What am I missing here? Any help would be most appreciated!
I would like my executable to be statically typed so that it can run without Qt installed.
When you use cgo, your go executable will link to shared libraries at run time depending on what C libraries the cgo code references.
If you wish to use cgo and have a stand alone executable you need to link your binary to static libraries (typically .a files). It is up to the third party module to provide such libraries, though, and qt may not provide them out of the box.
I found the problem. So with github.com/therecipe/qt you have 2 install options. You can either install the normal default way or you can install using the "static" method. You'll have problems if you do both. I ended up removing all files relative to github.com/therecipe/qt. I then installed using the static Windows x64 to Windows x64 method ONLY and followed those instructions for deploying a static executable. Worked like a charm using the instructions for MYSYS2.
This has been killing me for the last couple of days. I have read everything I can find on this error and have done what xamarin says but it still doesn't work.
I can't get my builds to get through azure pipeline xamarin.ios build and deploy to apple.
When I build locally I get messages like
MTOUCH : warning MT1502: One or more reference(s) to type 'UIKit.UIWebView' already exists inside 'Xamarin.Forms.Platform.iOS, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null' before linking
with a companion message that says no references after linking
when I use --warn-on-type-ref=UIKit.UIWebView with the optimize arg.
When I build on azure in my pipeline, I only see the MT1502 but nothing saying anything after linking. The build gets submitted to Apple and fails because of the ITMS message.
I don't know what to do. I am using the latest macOS vm image, mono 6.8.0.123, xamarin.ios 13.16.0.13, xcode 11.4.1. The pipeline worked fine before April 30 deadline, now no matter what, I can't get the linker to strip UIWebView.
Let me know what other info would be helpful. I am completely stuck at this point.
Thanks.
I just got my build to pass Apple's inspection.
What ended up working for me was building locally and packaging the ipa file. On my mac I then changed the ipa extension to zip and unzipped it. I used terminal to go to the YOURAPPNAME.app "folder" and used grep -r UIWebView . to search for references. Don't forget the . so it searches the current directory. I missed that at first and got some message that grep was listening on stdin.
For me that resulted in a line like this:
Binary file ./Frameworks/PersonalizedAdConsent.framework/PersonalizedAdConsent matches
Now, the important thing to note is the linker never warned about this, so I was completely unaware of it. In my case it was part of Firebase/Admob. I was only one release behind and updating to the latest fixed my problem.
I still am using --optimize=force-rejected-types-removal --warn-on-type-ref=UIKit.UIWebView -warnaserror:1503 as my mtouch args. But builds now get through.
I hope this helps point you guys in the right direction, I've spent the last 3 days just trying to get builds to upload reading every post I could find on the web on this problem.
Solved !! I had to update the way how nugets are included to the iOS project .csproj file. The problem was that linker despite the --optimize=force-rejected-types-removal flag was not removing the UIWebView component form Xamarin.Forms 4.6 probably because it did not see it.
My project was created over two years ago and I was still using the packages.config file. After the update the flag started to work and grep query returned 0 :). The best way is to compare the old .csproj file with freshly created iOS project .csproj file and see how VS is referencing nugets.
I have a project which is using Qt 4.7.4 version (also I can't rebuild it using qt4.8 or qt5 – there are a lot of errors appears, project is big and not mine so fixing issues would be even harder than erasing the whole code and write new code). So I need to make this project, well, working on NativeClient.
Is it even possible? I use Windows and Visual Studio, I was trying to google instructions about qt+nacl on Windows but just can’t find nothing.
Also which pepper version should I use if it depends on it?
Is your qt build supporting native client?
Please check out this
Windows
The Qt-Nacl is not support, for now, in Windows.
By the way, here is the github repository dedicated for it -> https://github.com/msorvig/qt5-qtbase-nacl
In the file nacl-readme it is written :
[...] Windows is not supported as a host platform.
Linux
If you want to compile in Linux, I have made a script that will compile Qt5.4 with NaCl with all the dependencies needed.
https://gist.github.com/theshadowx/438297ac465874a5e226
I also made a video that will show the different steps and a showCase at the end :
https://www.youtube.com/watch?v=q2pMv1Svtqw
There is a known bug in QtCreator: under Windows it cannot handle correctly compiler native messages.
When using MinGW it's all ok since it produces messages in English. But there is no Qt5 binaries for MinGW (and I don't want to build my own ones, since, I guess, it painful process). So I try to use MSVC. But, my MSVC prints error mesages in Russian. After QtCreator processes these messages it shows me something unreadable.
For now google didn't help me how to solve this problem.
Does anybody know the way to configure QtCreator? Or configure MSVC to print errors in English? Or even modify QtCreator's source putting some stub and "fixing" the problem?
I come from UNIX world, I'm quite familiar with Linux, Solaris, Cygwin
and MinGW development. Recently I ported one of my
big projects (cppcms) to support MSVC,
including building static and dynamic libraries with CMake.
And I get all the time absolutely weird issues:
I had CMake build issues because Windows programming
lacks naming convention
for import and static libraries.
Now I discovered that I should use different versions of ICU (debug/release builds) according to the
actual build I do (Debug/RelWithDebInfo -- should use Debug ICU, Release release ICU) and so I should
change actual conventions for searching libraries according to debug/release mode only under MSVC.
Otherwise application just would not start giving a error on missing DLL.
I don't have any such issues under Mingw or Cygwin with GCC, Open Solaris with Sun Studio or Linux with gcc or intel compilers.
And I still have numerous wired issues and wired bugs and very strange behavior -- even some trivial things do not work
under MSVC builds, when everything works absolutely fine under Solaris/Linux/Cygwin/Mingw using GCC from 3.4 up to 4.4,
Sun Studio and Intel compilers). But not under MSVC.
To be honest, I have no idea how to deal with Last one! Because it looks like for me more like environment issues.
I know that the question is not really well defined. I think I'm quite experienced
developer and I know how to write portable and good C++ code. But using Microsoft native
tools drives me crazy with issues I just don't know how to solve.
Question: What should experienced Unix programmer with quite good base in Win32 API should know when it
starts using Genuine Microsoft Tools?
P.S.: Can someone explain why "Release With Debug Info" requires Debug version of MSVC runtime? And why there two versions of runtime exist at all?
P.P.S.: Please note I don't have issues with Win32 API, in fact Windows GCC build works absolutely fine.
Clarifications:
I'm looking for pitfalls that programmer that come from Unix world would may fall into.
For example, when moving from Linux to Solaris: make sure you compile code with -mt or
-pthreads when using multi threaded programs, linking with -lpthread is not enough.
P.S.: Can someone explain why "Release
With Debug Info" requires Debug
version of MSVC runtime?
It doesn't.
And why there
two versions of runtime exist at all?
Because the debug version does more error checking.
And I still have numerous wired issues
and wired bugs and very strange
behavior -- even some trivial things
do not work under MSVC builds,
* What am I doing wrong?
Not telling us what "wired issues and wired bugs and very strange behavior" you get.
* Where should I start?
By telling us the specific errors and problems you encounter.
* What do I miss?
Reading the documentation and learning the tools.
If your question is "What do I read to become a good Windows programmer?" then my answer is: Everything from Jeff Richter, as a start.
There is no magic bullet which will automatically make you an experienced Windows developer. Windows is a very different land compared to Unix. There are lots of quirks, weird behavior, and stuff which is just plain different. The only way to get out with your sanity intact is to tackle the transition one small problem at a time. Concentrate on a specific problem and try to understand the problem. Don't just "get it to work", but really understand what is happening. A good book about Windows programming will help.
There are huge amounts of Windows knowledge and experience accumulated in the SO community, but the only way to access it is to ask concrete questions about specific problems.
The release and debug versions of DLL's use different ways of allocating memory, that is why it is not advisable to mix release and debug versions. If you allocate something in a debug mode DLL and pass it back to the application which was compiled in release mode you may get into trouble.
In the case of your naming issues you may want to have different directories where you place your static / dll's. You can do do this in visual studio by using the configuration manager, not sure how it is under the express version.
I think you need to try and actually understand the new toolset rather than just try and squish it into your current understanding of your existing tools. For that, the best way, IMHO, is for you to try and start to use Visual Studio as Microsoft intended and then once you can build a simple project in the IDE you can move to building it using your preferred make system but do so with an understanding of how the IDE is using its make system to set things up for that build (which WILL work).
So, for example, for part 1 of your question you want to create a simple static library project and a simple dll project and look at the linker options tabs. Jump to the 'Command line' view and you'll see that a DLL uses the /OUT linker option to set the name and location of the dll file and the /LIB linker option to set the name and location of the import library. With a static library only the /OUT option is used and it indicates the name of the static lib. It's true that if you're building a static lib and a DLL from the same source and you have both the /LIB for the dll set to MyCrossPlatformCode.lib and /OUT set to MyCrossPlatformCode.dll then you may have problems if you also build a static lib with an /OUT switch of MyCrossPlatformCode.lib... Simply don't do that; either build the static libs to a different output directory (which is what OpenSSL does), or, better (IMHO), mangle the names somewhat so that you have MyCrossPlatformCode.lib/.dll and MyCrossPlatformCode_static.lib (which is what STLPort does).
Note that you might also want to mangle in (or account for) building with different versions of the Microsoft tool chain (so you might end up with stlport_vc8_x64d_static.5.1, perhaps).
An alternative approach, if you really can't face the thought of understanding your toolset, is that you could take a look at some of the popular open source systems that build quite fine on Windows and Unix systems; OpenSSL and STLPort for a start, perhaps.