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Opencv with gstreamer

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  • V Offline
    V Offline
    Vijaykarthikeyan
    wrote on last edited by
    #1

    I have successfully implemented video streaming using openCV method. Now, I want to integrate openCV with GStreamer. For that, I have downloaded GStreamer-1.0 packages. Now, what the problem is I don't know how to link the gstreamer with Qt. If I included this:
    CONFIG += link_pkgconfig

    Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
    PKGCONFIG += gstreamer-1.0

    I'm getting error like this:
    C:\gstreamer\1.0\mingw_x86_64\lib\libstdc++.a(ext11-inst.o):-1: error: undefined reference to `__imp__fseeki64'

    My compiler is : MINGW-64 bit compiler
    Im running in Windows Os.

    This is my .pro file:

    QT       += core gui quick multimediawidgets
QT += network
QT += widgets
QT += quick
QT += gamepad
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
#INCLUDEPATH += C:/gstreamer/1.0/mingw_x86_64/include
# Tell qmake to use pkg-config to find QtGStreamer.
CONFIG += link_pkgconfig

# Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
PKGCONFIG += gstreamer-1.0

# Recommended if you are using g++ 4.5 or later. Must be removed for other compilers.
#QMAKE_CXXFLAGS += -std=c++0x

INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gstreamer-1.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/glib-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gobject-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/lib/glib-2.0/include"


SOURCES += \
    link.cpp \
    main.cpp \
    mainwindow.cpp \
    opencvimageprovider.cpp \
    videostreamer.cpp

HEADERS += \
    link.h \
    mainwindow.h \
    opencvimageprovider.h \
    videostreamer.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target



RESOURCES += \
    qml.qrc
    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_core452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_highgui452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/bin/ -llibopencv_videoio452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    RESOURCES += \
        qml.qrc


    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgproc452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include



    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgcodecs452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_calib3d452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include
    V 1 Reply Last reply
    0
    • V Vijaykarthikeyan

      I have successfully implemented video streaming using openCV method. Now, I want to integrate openCV with GStreamer. For that, I have downloaded GStreamer-1.0 packages. Now, what the problem is I don't know how to link the gstreamer with Qt. If I included this:
      CONFIG += link_pkgconfig

      Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
      PKGCONFIG += gstreamer-1.0

      I'm getting error like this:
      C:\gstreamer\1.0\mingw_x86_64\lib\libstdc++.a(ext11-inst.o):-1: error: undefined reference to `__imp__fseeki64'

      My compiler is : MINGW-64 bit compiler
      Im running in Windows Os.

      This is my .pro file:

      QT       += core gui quick multimediawidgets
QT += network
QT += widgets
QT += quick
QT += gamepad
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
#INCLUDEPATH += C:/gstreamer/1.0/mingw_x86_64/include
# Tell qmake to use pkg-config to find QtGStreamer.
CONFIG += link_pkgconfig

# Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
PKGCONFIG += gstreamer-1.0

# Recommended if you are using g++ 4.5 or later. Must be removed for other compilers.
#QMAKE_CXXFLAGS += -std=c++0x

INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gstreamer-1.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/glib-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gobject-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/lib/glib-2.0/include"


SOURCES += \
    link.cpp \
    main.cpp \
    mainwindow.cpp \
    opencvimageprovider.cpp \
    videostreamer.cpp

HEADERS += \
    link.h \
    mainwindow.h \
    opencvimageprovider.h \
    videostreamer.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target



RESOURCES += \
    qml.qrc
    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_core452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_highgui452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/bin/ -llibopencv_videoio452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    RESOURCES += \
        qml.qrc


    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgproc452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include



    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgcodecs452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_calib3d452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include
      V Offline
      V Offline
      Vijaykarthikeyan
      wrote on last edited by
      #4

      @Vijaykarthikeyan Atlast I finally found that my Ming-GW 64 bit compiler was not fully supported by gstreamer.So,I downgraded to 1.16 which is fully supported.Problem solved

      1 Reply Last reply
      0
      • B Offline
        B Offline
        Bonnie
        wrote on last edited by
        #2

        Take a look at https://gstreamer.freedesktop.org/download/
        The Toolchain Compatibility Notes section.
        Your mingw64 toolchain needs to be compatible with the gstreamer libs you are trying to link.

        V 1 Reply Last reply
        2
        • B Bonnie

          Take a look at https://gstreamer.freedesktop.org/download/
          The Toolchain Compatibility Notes section.
          Your mingw64 toolchain needs to be compatible with the gstreamer libs you are trying to link.

          V Offline
          V Offline
          Vijaykarthikeyan
          wrote on last edited by
          #3

          @Bonnie When I look into that,it has been said that for MINGW64 bit,the versions above 1.18 are partially supoorted. only for 1.16 versions,it is fully supported

          1 Reply Last reply
          0
          • V Vijaykarthikeyan

            I have successfully implemented video streaming using openCV method. Now, I want to integrate openCV with GStreamer. For that, I have downloaded GStreamer-1.0 packages. Now, what the problem is I don't know how to link the gstreamer with Qt. If I included this:
            CONFIG += link_pkgconfig

            Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
            PKGCONFIG += gstreamer-1.0

            I'm getting error like this:
            C:\gstreamer\1.0\mingw_x86_64\lib\libstdc++.a(ext11-inst.o):-1: error: undefined reference to `__imp__fseeki64'

            My compiler is : MINGW-64 bit compiler
            Im running in Windows Os.

            This is my .pro file:

            QT       += core gui quick multimediawidgets
QT += network
QT += widgets
QT += quick
QT += gamepad
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
#INCLUDEPATH += C:/gstreamer/1.0/mingw_x86_64/include
# Tell qmake to use pkg-config to find QtGStreamer.
CONFIG += link_pkgconfig

# Now tell qmake to link to QtGStreamer and also use its include path and Cflags.
PKGCONFIG += gstreamer-1.0

# Recommended if you are using g++ 4.5 or later. Must be removed for other compilers.
#QMAKE_CXXFLAGS += -std=c++0x

INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gstreamer-1.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/glib-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/include/gobject-2.0"
INCLUDEPATH += "C:/gstreamer/1.0/mingw_x86_64/lib/glib-2.0/include"


SOURCES += \
    link.cpp \
    main.cpp \
    mainwindow.cpp \
    opencvimageprovider.cpp \
    videostreamer.cpp

HEADERS += \
    link.h \
    mainwindow.h \
    opencvimageprovider.h \
    videostreamer.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target



RESOURCES += \
    qml.qrc
    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_core452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_highgui452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/bin/ -llibopencv_videoio452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    RESOURCES += \
        qml.qrc


    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgproc452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include



    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_imgcodecs452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include

    unix|win32: LIBS += -L$$PWD/../../../opencv2/x64/mingw/lib/ -llibopencv_calib3d452.dll

    INCLUDEPATH += $$PWD/../../../opencv2/include
    DEPENDPATH += $$PWD/../../../opencv2/include
            V Offline
            V Offline
            Vijaykarthikeyan
            wrote on last edited by
            #4

            @Vijaykarthikeyan Atlast I finally found that my Ming-GW 64 bit compiler was not fully supported by gstreamer.So,I downgraded to 1.16 which is fully supported.Problem solved

            1 Reply Last reply
            0
            • V Vijaykarthikeyan has marked this topic as solved on

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