[gst-devel] where is library gst.h?

[Stefan Kost]

Hi Fabian,

can you first make sure you can build a simple glib based app?

--- glibtest.c ---
#include "glib/glib.h"

int main(int argc,char *argv) {
   gpointer mem=g_malloc(100);
   g_print("Hello\n");
   g_free(mem);
}

gcc `pkg-config --cflags glib-2` glibtest.c -o glibtest `pkg-config --libs glib-2`

Stefan

PS.: the above is untested ;)

> 
>> Are you sure you don'T miss a ';' in an own include you include 
>> before  gst.h.
>> Best would be to attach you source and show use the full commandline.
>>
> 
> I did this (that I saw in gestreamer docs)
> 
> fabian at jaguar:~/programas$ gcc -Wall $(pkg-config --cflags --libs  
> gstreamer-0.8) mp3play.c -o mp3rep
> /usr/lib/gcc-lib/i486-linux/3.3.5/../../../libgstreamer-0.8.so: 
> undefined  reference to `g_assert_warning'
> /usr/lib/gcc-lib/i486-linux/3.3.5/../../../libgstreamer-0.8.so: 
> undefined  reference to `g_return_if_fail_warning'
> collect2: ld returned 1 exit status
> 
> this is the code
> 
> /* This is a command line mp3 player using gstreamer. It's nothing more  
> than
>  * their hello,world with one addition feature in that it prints off 
> the  time
>  * while the song is playing.
>  *
>  * Just making it public for the hell of it. I did not write 100% of 
> this  code
>  * I simply added a little to print off the length, time remaining...
>  */
> 
> #include <stdlib.h>
> #include </usr/include/gstreamer-0.8/gst/gst.h>
> 
> #define MY_TIME_FORMAT "u:%02u:%02u"
> #define MY_TIME_ARGS(t) \
>     (guint) ((t) / (GST_SECOND * 60 * 60)), \
>     (guint) (((t) / (GST_SECOND * 60)) % 60), \
>     (guint) (((t) / GST_SECOND) % 60)
> 
> int
> main (int argc, char *argv[])
> {
>       GstElement *bin, *filesrc, *decoder, *osssink;
> 
>       gst_init (&argc, &argv);
> 
>     if (argc != 2) {
>         g_print ("usage: %s <mp3 file>\n", argv[0]);
>             exit (-1);
>       }
> 
>       /* create a new bin to hold the elements */
>       bin = gst_pipeline_new ("pipeline");
>       g_assert (bin);
> 
>       /* create a disk reader */
>       filesrc = gst_element_factory_make ("filesrc", "disk_source");
>       g_assert (filesrc);
>       g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
> 
>     /* now it's time to get the decoder */
>       decoder = gst_element_factory_make ("mad", "decode");
>       if (!decoder) {
>             g_print ("could not find 'mad' plugin\n");
>             return -1;
>       }
>       /* and an audio sink */
>       osssink = gst_element_factory_make ("osssink", "play_audio");
>       g_assert (osssink);
> 
>       /* add objects to the main pipeline */
>       gst_bin_add_many (GST_BIN (bin), filesrc, decoder, osssink, NULL);
> 
>       /* link the elements */
>       gst_element_link_many (filesrc, decoder, osssink, NULL);
> 
>       /* start playing */
>       gst_element_set_state (bin, GST_STATE_PLAYING);
> 
>     while (gst_bin_iterate (GST_BIN (bin)))
>     {
>           gint64 len, pos;
>             GstFormat fmt = GST_FORMAT_TIME;
> 
>             if (gst_element_query (osssink, GST_QUERY_POSITION, &fmt, 
> &pos) &&
>                 gst_element_query (osssink, GST_QUERY_TOTAL, &fmt, &len))
>         {
>                   g_print ("Time: %" MY_TIME_FORMAT " / %" 
> MY_TIME_FORMAT "\r",
>                        MY_TIME_ARGS (pos), MY_TIME_ARGS (len));
>             }
>       }
> 
>       /* stop the bin */
>       gst_element_set_state (bin, GST_STATE_NULL);
>       gst_object_unref (GST_OBJECT (bin));
> 
>       exit (0);
> }
> 
> 
>> gst-inspect is a link to gst-inspect-0.8 (in case you are using 0.8).  
>> Which distribution you are one. Have you installed gstreamer by 
>> yourself  from source or as packages. gst-inspect is part of the 
>> gstreamer (core)  package. Try gst-<TAB> doe it show anything?
>>
>> Stefan
>>