source: trunk/third/gstreamer/tools/gst-typefind.c @ 21005

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <string.h>
#include <stdlib.h>
#include <locale.h>
#include <gst/gst.h>

/*
 * find the type of a media file and display it's properties
 **/

gboolean FOUND = FALSE;
gchar *filename = NULL;

void
gst_caps_print (const char *filename, const GstCaps * caps)
{
  gchar *caps_str = gst_caps_to_string (caps);

  g_print ("%s - %s\n", filename, caps_str);
  g_free (caps_str);
}

void
have_type_handler (GstElement * typefind, guint probability,
    const GstCaps * caps, gpointer unused)
{
  gst_caps_print (filename, caps);
  FOUND = TRUE;
}

int
main (int argc, char *argv[])
{
  guint i = 1;
  GstElement *pipeline;
  GstElement *source, *typefind;

  setlocale (LC_ALL, "");

  gst_init (&argc, &argv);

  if (argc < 2) {
    g_print ("Please give a filename to typefind\n\n");
    return 1;
  }

  pipeline = gst_pipeline_new (NULL);
  source = gst_element_factory_make ("filesrc", "source");
  g_assert (GST_IS_ELEMENT (source));
  typefind = gst_element_factory_make ("typefind", "typefind");
  g_assert (GST_IS_ELEMENT (typefind));
  gst_bin_add_many (GST_BIN (pipeline), source, typefind, NULL);
  gst_element_link (source, typefind);
  g_signal_connect (G_OBJECT (typefind), "have-type",
      G_CALLBACK (have_type_handler), NULL);

  while (i < argc) {
    FOUND = FALSE;
    gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
    filename = argv[i];
    g_object_set (source, "location", filename, NULL);
    /* set to play */
    gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);

    while (!FOUND) {
      if (!gst_bin_iterate (GST_BIN (pipeline)))
        break;
    }
    if (!FOUND) {
      g_print ("%s - No type found\n", argv[i]);
    }
    i++;
  }
  g_object_unref (pipeline);
  return 0;
}