[gst-devel] compilation issue!
Guilherme Raymo Longo
grlongo.ireland at gmail.com
Sun May 24 17:01:51 CEST 2009
Kost...
Tks for your help so far... I fixed the problem removing and compiling again
the libraries and plug-ins. It seems that I had some problems with the
installation.
I am gettting a last error mensagem when I am running the spectrum script
available in the spectrum plugin page.
That is the problem:
./spectrum
(spectrum:3124): GLib-GObject-CRITICAL **: g_object_set: assertion
`G_IS_OBJECT (object)' failed
(spectrum:3124): GStreamer-CRITICAL **: gst_element_link_pads_filtered:
assertion `GST_IS_ELEMENT (dest)' failed
can't link elements
It does seem to have a connection with the other problem... is it a commom
problem?? Do you think a should start over again compiling and installing
everything???????
On Sun, May 24, 2009 at 10:21 AM, Guilherme <grlongo.ireland at gmail.com>wrote:
> It is not ;O)
>
> But you probably noticed that I was just trying different codes to see if
> things worked out in here ;O)!
>
>
> The output is this:
>
> pkg-config --cflags --libs gstreamer-0.10
> -pthread -I/usr/include/gstreamer-0.10 -I/usr/include/glib-2.0
> -I/usr/lib/glib-2.0/include -I/usr/include/libxml2 -pthread
> -lgstreamer-0.10 -lgobject-2.0 -lgmodule-2.0 -lgthread-2.0 -lrt -lxml2
> -lglib-2.0
>
> It seems that the paths are right.... strange!
>
> Tks!
>
> -------------------
>
> Guilherme Longo
> Dept. Eng. da Computação
> Unaerp
>
> Linux User - #484927
>
> *Before Asking
> http://www.istf.com.br/?page=perguntas
>
> !- I'd rather die on my feet than live on my knees -!
>
>
>
>
> Stefan Kost wrote:
>
>> Guilherme Raymo Longo schrieb:
>>
>>
>>> Mates, I am having a issue when trying to compile a simple code that
>>> should work without problems.
>>> I have it running in other machines, but I can't figure out what it
>>> might be.
>>>
>>>
>>
>>
>> what does this print?
>> pkg-config --cflags --libs gstreamer-0.10
>>
>> Besides the code below does not look like spectrum.c :)
>>
>> Stefan
>>
>>
>>> This is the output:
>>>
>>> bash-3.1# gcc -Wall $(pkg-config --cflags --libs gstreamer-0.10)
>>> spectrum.c
>>> /tmp/cccrQH9p.o: In function `bus_call':
>>> spectrum.c:(.text+0xd): undefined reference to `gst_message_get_type'
>>> spectrum.c:(.text+0x64): undefined reference to `gst_message_parse_error'
>>> /tmp/cccrQH9p.o: In function `on_pad_added':
>>> spectrum.c:(.text+0xdd): undefined reference to
>>> `gst_element_get_static_pad'
>>> spectrum.c:(.text+0xf1): undefined reference to `gst_pad_link'
>>> spectrum.c:(.text+0xff): undefined reference to `gst_object_unref'
>>> /tmp/cccrQH9p.o: In function `main':
>>> spectrum.c:(.text+0x12b): undefined reference to `gst_init'
>>> spectrum.c:(.text+0x17c): undefined reference to `gst_pipeline_new'
>>> spectrum.c:(.text+0x194): undefined reference to
>>> `gst_element_factory_make'
>>> spectrum.c:(.text+0x1ac): undefined reference to
>>> `gst_element_factory_make'
>>> spectrum.c:(.text+0x1c4): undefined reference to
>>> `gst_element_factory_make'
>>> spectrum.c:(.text+0x1dc): undefined reference to
>>> `gst_element_factory_make'
>>> spectrum.c:(.text+0x1f4): undefined reference to
>>> `gst_element_factory_make'
>>> spectrum.c:(.text+0x26c): undefined reference to `gst_pipeline_get_type'
>>> spectrum.c:(.text+0x285): undefined reference to `gst_pipeline_get_bus'
>>> spectrum.c:(.text+0x29e): undefined reference to `gst_bus_add_watch'
>>> spectrum.c:(.text+0x2ac): undefined reference to `gst_object_unref'
>>> spectrum.c:(.text+0x2b4): undefined reference to `gst_bin_get_type'
>>> spectrum.c:(.text+0x2de): undefined reference to `gst_bin_add_many'
>>> spectrum.c:(.text+0x2ef): undefined reference to `gst_element_link'
>>> spectrum.c:(.text+0x302): undefined reference to `gst_element_link_many'
>>> spectrum.c:(.text+0x34e): undefined reference to `gst_element_set_state'
>>> spectrum.c:(.text+0x38c): undefined reference to `gst_element_set_state'
>>> spectrum.c:(.text+0x3a4): undefined reference to `gst_object_get_type'
>>> spectrum.c:(.text+0x3bd): undefined reference to `gst_object_unref'
>>> collect2: ld returned 1 exit status
>>>
>>>
>>>
>>> I have the PKG_CONFIG_PATH duly configured and gstreamer-0.10 libraries
>>> are installed. What am I missing here??????
>>>
>>> This is the code:
>>>
>>> #include <gst/gst.h>
>>> #include <glib.h>
>>>
>>>
>>> static gboolean
>>> bus_call (GstBus *bus,
>>> GstMessage *msg,
>>> gpointer data)
>>> {
>>> GMainLoop *loop = (GMainLoop *) data;
>>>
>>> switch (GST_MESSAGE_TYPE (msg)) {
>>>
>>> case GST_MESSAGE_EOS:
>>> g_print ("End of stream\n");
>>> g_main_loop_quit (loop);
>>> break;
>>>
>>> case GST_MESSAGE_ERROR: {
>>> gchar *debug;
>>> GError *error;
>>>
>>> gst_message_parse_error (msg, &error, &debug);
>>> g_free (debug);
>>>
>>> g_printerr ("Error: %s\n", error->message);
>>> g_error_free (error);
>>>
>>> g_main_loop_quit (loop);
>>> break;
>>> }
>>> default:
>>> break;
>>> }
>>>
>>> return TRUE;
>>> }
>>>
>>>
>>> static void
>>> on_pad_added (GstElement *element,
>>> GstPad *pad,
>>> gpointer data)
>>> {
>>> GstPad *sinkpad;
>>> GstElement *decoder = (GstElement *) data;
>>>
>>> /* We can now link this pad with the vorbis-decoder sink pad */
>>> g_print ("Dynamic pad created, linking demuxer/decoder\n");
>>>
>>> sinkpad = gst_element_get_static_pad (decoder, "sink");
>>>
>>> gst_pad_link (pad, sinkpad);
>>>
>>> gst_object_unref (sinkpad);
>>> }
>>>
>>>
>>>
>>> int
>>> main (int argc,
>>> char *argv[])
>>> {
>>> GMainLoop *loop;
>>>
>>> GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink;
>>> GstBus *bus;
>>>
>>> /* Initialisation */
>>> gst_init (&argc, &argv);
>>>
>>> loop = g_main_loop_new (NULL, FALSE);
>>>
>>>
>>> /* Check input arguments */
>>> if (argc != 2) {
>>> g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]);
>>> return -1;
>>> }
>>>
>>>
>>> /* Create gstreamer elements */
>>> pipeline = gst_pipeline_new ("audio-player");
>>> source = gst_element_factory_make ("filesrc", "file-source");
>>> demuxer = gst_element_factory_make ("oggdemux", "ogg-demuxer");
>>> decoder = gst_element_factory_make ("vorbisdec", "vorbis-decoder");
>>> conv = gst_element_factory_make ("audioconvert", "converter");
>>> sink = gst_element_factory_make ("autoaudiosink", "audio-output");
>>>
>>> if (!pipeline || !source || !demuxer || !decoder || !conv || !sink) {
>>> g_printerr ("One element could not be created. Exiting.\n");
>>> return -1;
>>> }
>>>
>>> /* Set up the pipeline */
>>>
>>> /* we set the input filename to the source element */
>>> g_object_set (G_OBJECT (source), "location", argv[1], NULL);
>>>
>>> /* we add a message handler */
>>> bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
>>> gst_bus_add_watch (bus, bus_call, loop);
>>> gst_object_unref (bus);
>>>
>>> /* we add all elements into the pipeline */
>>> /* file-source | ogg-demuxer | vorbis-decoder | converter | alsa-output
>>> */
>>> gst_bin_add_many (GST_BIN (pipeline),
>>> source, demuxer, decoder, conv, sink, NULL);
>>>
>>> /* we link the elements together */
>>> /* file-source -> ogg-demuxer ~> vorbis-decoder -> converter ->
>>> alsa-output */
>>> gst_element_link (source, demuxer);
>>> gst_element_link_many (decoder, conv, sink, NULL);
>>> g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added),
>>> decoder);
>>>
>>> /* note that the demuxer will be linked to the decoder dynamically.
>>> The reason is that Ogg may contain various streams (for example
>>> audio and video). The source pad(s) will be created at run time,
>>> by the demuxer when it detects the amount and nature of streams.
>>> Therefore we connect a callback function which will be executed
>>> when the "pad-added" is emitted.*/
>>>
>>>
>>> /* Set the pipeline to "playing" state*/
>>> g_print ("Now playing: %s\n", argv[1]);
>>> gst_element_set_state (pipeline, GST_STATE_PLAYING);
>>>
>>>
>>> /* Iterate */
>>> g_print ("Running...\n");
>>> g_main_loop_run (loop);
>>>
>>>
>>> /* Out of the main loop, clean up nicely */
>>> g_print ("Returned, stopping playback\n");
>>> gst_element_set_state (pipeline, GST_STATE_NULL);
>>>
>>> g_print ("Deleting pipeline\n");
>>> gst_object_unref (GST_OBJECT (pipeline));
>>>
>>> return 0;
>>> }
>>>
>>>
>>> Tks so much!
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>>
>>> ------------------------------------------------------------------------------
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>>>
>>> _______________________________________________
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>>>
>>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
>> is a gathering of tech-side developers & brand creativity professionals.
>> Meet
>> the minds behind Google Creative Lab, Visual Complexity, Processing, &
>> iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian
>> Group, R/GA, & Big Spaceship. http://www.creativitycat.com_______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>>
>>
>
--
Guilherme Raymo Longo
Software Developer
Mob. 087 - 3179008
msn: grlongo.ireland at hotmail.com
skype: grlongo.ireland
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