QtGStreamer build system integration

musimbate

I have managed to install cmake and run
@
cmake ..
@

In a build directory I created under qt-gstreamer-1.2.0 but I am getting the following errors:
@

-- Building for: Visual Studio 10 2010
-- Using Qt4 (min: 4.7)
-- Could NOT find Boost
-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
-- Could NOT find GSTREAMER_BASE_LIBRARY
.........
@

It seems cmake in not picking up the location of boost ,I got it under
@
C:\local\boost_1_53_0\boost
@

I saw in my CMakelists.txt file the following statement:

@
find_package(Boost 1.39)
macro_log_feature(Boost_FOUND "Boost" "Required for building QtGLib" "http://www.boost.org/" TRUE "1.39")
@

I think that it is the failure of this statement that is causing the errors.
To sum it up: How do I make cmake aware of the location of the boost libraries and other unrecognized components .For example I got gstreamer installed but it is also missing it .Is it through edits to the CMakelists.txt file?

I realize this is not really a Qt question but QtGstreamer is Qt right ? :-)

Thank you for your time.

SGaist

Use
-D "CMAKE_PREFIX_PATH":http://www.cmake.org/cmake/help/v3.0/variable/CMAKE_PREFIX_PATH.html ="path to boost cmake files"

when calling cmake

Solidus

Hello.

I've ended up on the same problem. Did you manage to find a solution for this?

Thanks in advance.

Solidus

Hello.

I've ended up on the same problem. Did you manage to find a solution for this?

Thanks in advance.

musimbate

Hi,
I could not build it and I used ffmpeg for my needs .But is seems some people have been able to build it here : http://gstreamer-devel.966125.n4.nabble.com/Problems-building-QtGStreamer-release-build-on-Windows-td4657300.html#a4669019 .I haven't tried this yet as I am tight on time but I am interested in knowing if you get it to build :-) .

musimbate

Hi,
I could not build it and I used ffmpeg for my needs .But is seems some people have been able to build it here : http://gstreamer-devel.966125.n4.nabble.com/Problems-building-QtGStreamer-release-build-on-Windows-td4657300.html#a4669019 .I haven't tried this yet as I am tight on time but I am interested in knowing if you get it to build :-) .

dionis.

Hi,

I know it has been some time, but have you managed to solve this? I have to build some apps with GStreamer, but don't know how to include it and access it from Qt.

TIA

musimbate

Sorry I haven't had the time to look into this lately.I have used ffmpeg to solve my problems.If this helps ,I used it as an external process and this saves the hassle to go and build it yourself :-) .

dionis.

Thanks for your reply @musimbate , I managed to link the gstreamer library header files, so I didn't build it, but just include its path and access the header files and libs. Anyway, now I have an error of The program has unexpectedly finished. When I try to debug it, I get the following error in a pop-up:
During startup program excited with code 0xc0000135.

On General Messages:
<dump of C:\Qt\Qt5.5.0_Android\5.5\mingw492_32\qml>:1:24: Reading only version 1.1 parts.
<dump of C:\Qt\Qt5.5.0_Android\5.5\mingw492_32\qml>:10:5: Expected only Component and ModuleApi object definitions.

I read many questions realated to this error, but none helped, I think is an error with the gstream library, but may be a compiler/debugger error also. I am just asking, in case you have encountered any error using ffmpeg.

I am relatively new to Qt, and never encountered this error before. If you need any code:

.pro:

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = GStreamer-test5
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui

INCLUDEPATH += C:/gstreamer/1.0/x86/include/gstreamer-1.0
C:/gstreamer/1.0/x86/lib/gstreamer-1.0/include
C:/gstreamer/1.0/x86/include/glib-2.0
C:/gstreamer/1.0/x86/lib/glib-2.0/include

LIBS += -L C:/gstreamer/1.0/x86/lib/ -lgstreamer-1.0

and .main:

#include "mainwindow.h"
#include <QApplication>

#include <QDebug>

#include <stdio.h>
#include "gst/gst.h"

void *__gxx_personality_v0;

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

  const gchar *nano_str;
  guint major, minor, micro, nano;

  gst_init (&argc, &argv);

  gst_version (&major, &minor, &micro, &nano);

  if (nano == 1)
    nano_str = "(CVS)";
  else if (nano == 2)
    nano_str = "(Prerelease)";
  else
    nano_str = "";

  // printf ("This program is linked against GStreamer %d.%d.%d %s\n", major, minor, micro, nano_str);

  qDebug() << "This program is linked against GStreamer %d.%d.%d %s\n", major, minor, micro, nano_str ;

return a.exec();

Firstly, I had the error :
undefined reference to `__gxx_personality_v0' , but fixed it by adding void *__gxx_personality_v0;, although I don't know what excatly it is.

Its been three days I struggle with this problem. Any help appreciated, or maybe if you can help me by some code on how to access the header files and libs.
Thank you!

musimbate

I wish I could be of more help but I could not build it myself.