Gstreamer學習筆記----第一個helloworld程序

1.Ubuntu上安裝gstreamer庫：

  apt-get install libgstreamer0.10-0

  apt-get install libgstreamer0.10-dev

  apt-get install libgstreamer0.10-0-dbg

2.編寫測試gstreamer庫的helloworld.c:

#include <stdio.h>
#include <gst/gst.h>
int main (int   argc,char *argv[])
{
    const gchar *nano_str;
    guint major, minor, micro, nano;

    gst_init (&argc, &argv);
    gst_version (&major, &minor, µ, &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);
    return 0;
}

這是個得到gstreamer庫版本的測試用例。

3.編譯程序：

gcc -Wall helloworld.c -o helloworld $(pkg-config --cflags --libs gstreamer-0.10)

編譯時藉助了 pkg-config 
pkg-config --cflags --libs gstreamer-0.10 會把gstreamer-0.10編譯所依賴的庫的路徑 頭文件的路徑所有幫你找出來，不用你再依次寫出。
(上面這條pkg-config --cflags --libs gstreamer-0.10 就至關於：
-pthread -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gstreamer-0.10 -I/usr/include/libxml2  -pthread -L/usr/lib/i386-linux-gnu -lgstreamer-0.10 -lgobject-2.0 -lgmodule-2.0 -lxml2 -lgthread-2.0 -lrt -lglib-2.0)

4.運行helloworld結果： ./helloworld

This program is linked against GStreamer 0.10.32