gstreamer/gst-sdk/tutorials/android-tutorial-1/jni/tutorial-1.c

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
#include <string.h>
#include <jni.h>
#include <gst/gst.h>

jstring
Java_com_gst_1sdk_1tutorials_tutorial_11_Tutorial1_gstVersion (JNIEnv* env,
                                                  jobject thiz )
{
  char buffer[8192] = "";
  GList *original_plugin_list = gst_registry_get_plugin_list (gst_registry_get_default());
  GList *plugin_list = original_plugin_list;

  g_strlcat (buffer, gst_version_string(), sizeof (buffer));
  g_strlcat (buffer, "\n", sizeof (buffer));
  while (plugin_list) {
    GstPlugin *plugin = (GstPlugin *)plugin_list->data;
    GList *original_features_list, *features_list;
    plugin_list = plugin_list->next;

    g_strlcat (buffer, gst_plugin_get_name (plugin), sizeof (buffer));
    g_strlcat (buffer, "\n", sizeof (buffer));
    original_features_list = features_list = gst_registry_get_feature_list_by_plugin (gst_registry_get_default(), plugin->desc.name);

    while (features_list) {
      GstPluginFeature *feature = (GstPluginFeature *)features_list->data;
      features_list = features_list->next;

      g_strlcat (buffer, "  ", sizeof (buffer));
      g_strlcat (buffer, gst_plugin_feature_get_name (feature), sizeof (buffer));
      g_strlcat (buffer, "\n", sizeof (buffer));
    }
    gst_plugin_feature_list_free (original_features_list);
  }
  gst_plugin_list_free (original_plugin_list);
  return (*env)->NewStringUTF(env, buffer);
}