glib/streamer install

 

$ sudo apt update && sudo apt upgrade
$ sudo apt-get dist-upgrade

 

glib 설치

1. glib download

https://download.gnome.org/sources/glib/

Index of /sources/glib/

2. 압축 풀기

~$ tar xvf glib-2.9.6.tar.gz

3. 구성

~$ cd glib-2.9.6/
~/glib-2.9.6$ ./configure

4. configure 중간에 없다고 오류나는 패키지들 설치

http://www.gnu.org/software/gettext/gettext.html

gettext - GNU Project - Free Software Foundation

~$ sudo apt-get install gettext

 

GStreamer 설치

$ sudo apt update

설치

$ sudo apt install libgstreamer1.0-0 libgstreamer1.0-dev gstreamer1.0-tools gstreamer1.0-doc gstreamer1.0-x gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly  gstreamer1.0-alsa gstreamer1.0-libav gstreamer1.0-gl gstreamer1.0-gtk3 gstreamer1.0-qt5 gstreamer1.0-pulseaudio libgstreamer-plugins-base1.0-dev

확인

$ gst-inspect-1.0 --version

웹캠 확인

$ gst-launch-1.0 autovideosrc device=/dev/video0 ! autovideosink

샘플코드

#include <gst/gst.h>
#include <iostream>

// compile & run
// $ g++ gstreamer_example.cpp -o gstreamer_example `pkg-config --cflags --libs gstreamer-1.0`
// $ ./gstreamer_example

int main() 
{
    GstElement *pipeline, *source, *sink;
    GstBus *bus;
    GstMessage *msg;
    GstStateChangeReturn ret;

    gst_init(NULL, NULL);

    pipeline = gst_pipeline_new ("pipeline");
    source = gst_element_factory_make ("autovideosrc", "source");
    sink = gst_element_factory_make ("autovideosink", "sink");

    if (!pipeline || !source || !sink) 
    {
        std::cout << "not all elements created: pipeline[" << !pipeline
            << "] source[" << !source
            << "] sink["<< !sink << "]" << std::endl;
        return -1;
    }

    g_object_set(G_OBJECT (sink), "sync", FALSE, NULL);

    gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);
    if (gst_element_link (source, sink) != TRUE) 
    {
        std::cout << "Elements could not be linked." << std::endl;
        gst_object_unref (pipeline);
        return -1;
    }

    ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
    if (ret == GST_STATE_CHANGE_FAILURE) 
    {
        std::cout << "Unable to set the pipeline to the playing state." << std::endl;
        gst_object_unref (pipeline);
        return -1;
    }

    bus = gst_element_get_bus (pipeline);

    std::cout << "press CTRL + C" << std::endl;

    for (;;);

    gst_object_unref(bus);
    gst_element_set_state(pipeline, GST_STATE_NULL);
    gst_object_unref(pipeline);
}

컴파일 및 실행

$ g++ gstreamer_example.cpp -o gstreamer_example `pkg-config --cflags --libs gstreamer-1.0`

$ ./gstreamer_example