Port to hotdoc

2025-04-12 19:14:16 +00:00 · 2018-10-22 03:14:11 -03:00 · 2018-10-22 03:14:11 -03:00 · a0c65067e0
commit a0c65067e0
parent 781ad55f68
54 changed files with 5149 additions and 3409 deletions
--- a/docs/gst-hotdoc-plugins-scanner.c
+++ b/docs/gst-hotdoc-plugins-scanner.c
@ -0,0 +1,763 @@
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+#include <glib/gprintf.h>
+#include <gst/gst.h>
+#include "gst/gst-i18n-app.h"
+
+static GRegex *cleanup_caps_field = NULL;
+
+static gboolean
+has_sometimes_template (GstElement * element)
+{
+  GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
+  GList *l;
+
+  for (l = klass->padtemplates; l != NULL; l = l->next) {
+    if (GST_PAD_TEMPLATE (l->data)->presence == GST_PAD_SOMETIMES)
+      return TRUE;
+  }
+
+  return FALSE;
+}
+
+static gchar *
+json_strescape (const gchar * str)
+{
+  const gchar *p;
+  const gchar *end;
+  GString *output;
+  gsize len;
+
+  if (!str)
+    return g_strdup ("NULL");
+
+  len = strlen (str);
+  end = str + len;
+  output = g_string_sized_new (len);
+
+  for (p = str; p < end; p++) {
+    if (*p == '\\' || *p == '"') {
+      g_string_append_c (output, '\\');
+      g_string_append_c (output, *p);
+    } else if (*p == '%') {
+      g_string_append_c (output, '%');
+      g_string_append_c (output, *p);
+    } else if ((*p > 0 && *p < 0x1f) || *p == 0x7f) {
+      switch (*p) {
+        case '\b':
+          g_string_append (output, "\\b");
+          break;
+        case '\f':
+          g_string_append (output, "\\f");
+          break;
+        case '\n':
+          g_string_append (output, "\\n");
+          break;
+        case '\r':
+          g_string_append (output, "\\r");
+          break;
+        case '\t':
+          g_string_append (output, "\\t");
+          break;
+        default:
+          g_string_append_printf (output, "\\u00%02x", (guint) * p);
+          break;
+      }
+    } else {
+      g_string_append_c (output, *p);
+    }
+  }
+
+  return g_string_free (output, FALSE);
+}
+
+static gchar *
+flags_to_string (GFlagsValue * values, guint flags)
+{
+  GString *s = NULL;
+  guint flags_left, i;
+
+  /* first look for an exact match and count the number of values */
+  for (i = 0; values[i].value_name != NULL; ++i) {
+    if (values[i].value == flags)
+      return g_strdup (values[i].value_nick);
+  }
+
+  s = g_string_new (NULL);
+
+  /* we assume the values are sorted from lowest to highest value */
+  flags_left = flags;
+  while (i > 0) {
+    --i;
+    if (values[i].value != 0
+        && (flags_left & values[i].value) == values[i].value) {
+      if (s->len > 0)
+        g_string_append_c (s, '+');
+      g_string_append (s, values[i].value_nick);
+      flags_left -= values[i].value;
+      if (flags_left == 0)
+        break;
+    }
+  }
+
+  if (s->len == 0)
+    g_string_assign (s, "(none)");
+
+  return g_string_free (s, FALSE);
+}
+
+
+static void
+_serialize_flags (GString * json, const gchar * key_name, GType gtype,
+    GValue * value)
+{
+  GFlagsValue *values = G_FLAGS_CLASS (g_type_class_ref (gtype))->values;
+
+  if (value) {
+    gchar *cur;
+
+    cur = flags_to_string (values, g_value_get_flags (value));
+    g_string_append_printf (json, ",\"default\": \"%s\",", cur);
+    g_free (cur);
+  }
+
+  g_string_append_printf (json, "\"%s\": [", key_name);
+
+  while (values[0].value_name) {
+    gchar *value_name = json_strescape (values[0].value_name);
+    g_string_append_printf (json, "{\"name\": \"%s\","
+        "\"value\": \"0x%08x\","
+        "\"desc\": \"%s\"}", values[0].value_nick, values[0].value, value_name);
+    ++values;
+
+    if (values[0].value_name)
+      g_string_append_c (json, ',');
+  }
+  g_string_append_c (json, ']');
+}
+
+static void
+_serialize_enum (GString * json, const gchar * key_name, GType gtype,
+    GValue * value)
+{
+  GEnumValue *values;
+  guint j = 0;
+  gint enum_value;
+  const gchar *value_nick = "";
+
+  values = G_ENUM_CLASS (g_type_class_ref (gtype))->values;
+
+  if (value) {
+    enum_value = g_value_get_enum (value);
+    while (values[j].value_name) {
+      if (values[j].value == enum_value)
+        value_nick = values[j].value_nick;
+      j++;
+    }
+    g_string_append_printf (json, ",\"default\": \"%s (%d)\","
+        "\"enum\": true,", value_nick, enum_value);;
+  }
+
+  g_string_append_printf (json, "\"%s\": [", key_name);
+
+  j = 0;
+  while (values[j].value_name) {
+    gchar *value_name = json_strescape (values[j].value_name);
+
+    g_string_append_printf (json, "{\"name\": \"%s\","
+        "\"value\": \"%d\","
+        "\"desc\": \"%s\"}", values[j].value_nick, values[j].value, value_name);
+    j++;
+    if (values[j].value_name)
+      g_string_append_c (json, ',');
+  }
+
+  g_string_append_c (json, ']');
+}
+
+
+static void
+_add_element_signals (GString * json, GstElement * element)
+{
+  gboolean opened = FALSE;
+  guint *signals;
+  guint nsignals;
+  gint i = 0, j, k;
+  GSignalQuery *query = NULL;
+  GType type;
+  GSList *found_signals, *l;
+
+  for (k = 0; k < 2; k++) {
+    found_signals = NULL;
+
+    /* For elements that have sometimes pads, also list a few useful GstElement
+     * signals. Put these first, so element-specific ones come later. */
+    if (k == 0 && has_sometimes_template (element)) {
+      query = g_new0 (GSignalQuery, 1);
+      g_signal_query (g_signal_lookup ("pad-added", GST_TYPE_ELEMENT), query);
+      found_signals = g_slist_append (found_signals, query);
+      query = g_new0 (GSignalQuery, 1);
+      g_signal_query (g_signal_lookup ("pad-removed", GST_TYPE_ELEMENT), query);
+      found_signals = g_slist_append (found_signals, query);
+      query = g_new0 (GSignalQuery, 1);
+      g_signal_query (g_signal_lookup ("no-more-pads", GST_TYPE_ELEMENT),
+          query);
+      found_signals = g_slist_append (found_signals, query);
+    }
+
+    for (type = G_OBJECT_TYPE (element); type; type = g_type_parent (type)) {
+      if (type == GST_TYPE_ELEMENT || type == GST_TYPE_OBJECT)
+        break;
+
+      if (type == GST_TYPE_BIN && G_OBJECT_TYPE (element) != GST_TYPE_BIN)
+        continue;
+
+      signals = g_signal_list_ids (type, &nsignals);
+      for (i = 0; i < nsignals; i++) {
+        query = g_new0 (GSignalQuery, 1);
+        g_signal_query (signals[i], query);
+
+        if ((k == 0 && !(query->signal_flags & G_SIGNAL_ACTION)) ||
+            (k == 1 && (query->signal_flags & G_SIGNAL_ACTION)))
+          found_signals = g_slist_append (found_signals, query);
+        else
+          g_free (query);
+      }
+      g_free (signals);
+      signals = NULL;
+    }
+
+    if (!found_signals)
+      continue;
+
+    for (l = found_signals; l; l = l->next) {
+      query = (GSignalQuery *) l->data;
+
+      g_string_append_printf (json,
+          "%s\"%s\" : {"
+          "\"retval\": \"%s\","
+          "\"args\": [",
+          opened ? "," : ",\"signals\": {",
+          query->signal_name, g_type_name (query->return_type));
+
+      opened = TRUE;
+      for (j = 0; j < query->n_params; j++) {
+        g_string_append_printf (json, "%s\"%s\"",
+            j ? "," : "", g_type_name (query->param_types[j]));
+      }
+      g_string_append_c (json, ']');
+
+      if (g_type_is_a (query->return_type, G_TYPE_ENUM)) {
+        g_string_append_c (json, ',');
+        _serialize_enum (json, "return-values", query->return_type, NULL);
+      } else if (g_type_is_a (query->return_type, G_TYPE_FLAGS)) {
+        g_string_append_c (json, ',');
+        _serialize_flags (json, "return-values", query->return_type, NULL);
+      }
+
+      g_string_append_c (json, '}');
+    }
+
+    g_slist_foreach (found_signals, (GFunc) g_free, NULL);
+    g_slist_free (found_signals);
+    opened = TRUE;
+  }
+
+  if (opened)
+    g_string_append (json, "}");
+}
+
+static void
+_add_element_properties (GString * json, GstElement * element)
+{
+  gchar *tmpstr;
+  guint i, n_props;
+  gboolean opened = FALSE;
+  GParamSpec **specs, *spec;
+  GObjectClass *klass = G_OBJECT_GET_CLASS (element);
+
+  specs = g_object_class_list_properties (klass, &n_props);
+
+  for (i = 0; i < n_props; i++) {
+    GValue value = { 0, };
+    spec = specs[i];
+
+    g_value_init (&value, spec->value_type);
+    if (element && ! !(spec->flags & G_PARAM_READABLE) &&
+        !(spec->flags & GST_PARAM_DOC_SHOW_DEFAULT)) {
+      g_object_get_property (G_OBJECT (element), spec->name, &value);
+    } else {
+      /* if we can't read the property value, assume it's set to the default
+       * (which might not be entirely true for sub-classes, but that's an
+       * unlikely corner-case anyway) */
+      g_param_value_set_default (spec, &value);
+    }
+
+    if (!opened)
+      g_string_append (json, ",\"properties\": {");
+
+    tmpstr = json_strescape (g_param_spec_get_blurb (spec));
+    g_string_append_printf (json,
+        "%s"
+        "\"%s\": {"
+        "\"construct-only\": %s,"
+        "\"construct\": %s,"
+        "\"writable\": %s,"
+        "\"blurb\": \"%s\","
+        "\"type-name\": \"%s\"",
+        opened ? "," : "",
+        spec->name,
+        spec->flags & G_PARAM_CONSTRUCT_ONLY ? "true" : "false",
+        spec->flags & G_PARAM_CONSTRUCT ? "true" : "false",
+        spec->flags & G_PARAM_WRITABLE ? "true" : "false",
+        tmpstr, g_type_name (G_PARAM_SPEC_VALUE_TYPE (spec)));
+    g_free (tmpstr);
+
+    switch (G_VALUE_TYPE (&value)) {
+      case G_TYPE_STRING:
+      {
+        const char *string_val = g_value_get_string (&value);
+        gchar *tmpstr = json_strescape (string_val);
+
+        g_string_append_printf (json, ",\"default\": \"%s\"", tmpstr);;
+        g_free (tmpstr);
+        break;
+      }
+      case G_TYPE_BOOLEAN:
+      {
+        gboolean bool_val = g_value_get_boolean (&value);
+
+        g_string_append_printf (json, ",\"default\": \"%s\"",
+            bool_val ? "true" : "false");
+        break;
+      }
+      case G_TYPE_ULONG:
+      {
+        GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%lu\""
+            ",\"min\": \"%lu\""
+            ",\"max\": \"%lu\"",
+            g_value_get_ulong (&value), pulong->minimum, pulong->maximum);
+
+        GST_ERROR ("%s: property '%s' of type ulong: consider changing to "
+            "uint/uint64", GST_OBJECT_NAME (element),
+            g_param_spec_get_name (spec));
+        break;
+      }
+      case G_TYPE_LONG:
+      {
+        GParamSpecLong *plong = G_PARAM_SPEC_LONG (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%ld\""
+            ",\"min\": \"%ld\""
+            ",\"max\": \"%ld\"",
+            g_value_get_long (&value), plong->minimum, plong->maximum);
+
+        GST_ERROR ("%s: property '%s' of type long: consider changing to "
+            "int/int64", GST_OBJECT_NAME (element),
+            g_param_spec_get_name (spec));
+        break;
+      }
+      case G_TYPE_UINT:
+      {
+        GParamSpecUInt *puint = G_PARAM_SPEC_UINT (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%d\""
+            ",\"min\": \"%d\""
+            ",\"max\": \"%d\"",
+            g_value_get_uint (&value), puint->minimum, puint->maximum);
+        break;
+      }
+      case G_TYPE_INT:
+      {
+        GParamSpecInt *pint = G_PARAM_SPEC_INT (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%d\""
+            ",\"min\": \"%d\""
+            ",\"max\": \"%d\"",
+            g_value_get_int (&value), pint->minimum, pint->maximum);
+        break;
+      }
+      case G_TYPE_UINT64:
+      {
+        GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%" G_GUINT64_FORMAT
+            "\",\"min\": \"%" G_GUINT64_FORMAT
+            "\",\"max\": \"%" G_GUINT64_FORMAT "\"",
+            g_value_get_uint64 (&value), puint64->minimum, puint64->maximum);
+        break;
+      }
+      case G_TYPE_INT64:
+      {
+        GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%" G_GUINT64_FORMAT
+            "\",\"min\": \"%" G_GINT64_FORMAT
+            "\",\"max\": \"%" G_GINT64_FORMAT "\"",
+            g_value_get_int64 (&value), pint64->minimum, pint64->maximum);
+        break;
+      }
+      case G_TYPE_FLOAT:
+      {
+        GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%g\""
+            ",\"min\": \"%g\""
+            ",\"max\": \"%g\"",
+            g_value_get_float (&value), pfloat->minimum, pfloat->maximum);
+        break;
+      }
+      case G_TYPE_DOUBLE:
+      {
+        GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (spec);
+
+        g_string_append_printf (json,
+            ",\"default\": \"%g\""
+            ",\"min\": \"%g\""
+            ",\"max\": \"%g\"",
+            g_value_get_double (&value), pdouble->minimum, pdouble->maximum);
+        break;
+      }
+      case G_TYPE_CHAR:
+      case G_TYPE_UCHAR:
+        GST_ERROR ("%s: property '%s' of type char: consider changing to "
+            "int/string", GST_OBJECT_NAME (element),
+            g_param_spec_get_name (spec));
+        /* fall through */
+      default:
+        if (spec->value_type == GST_TYPE_CAPS) {
+          const GstCaps *caps = gst_value_get_caps (&value);
+
+          if (caps) {
+            gchar *capsstr = gst_caps_to_string (caps);
+            gchar *tmpcapsstr = json_strescape (capsstr);
+
+            g_string_append_printf (json, ",\"default\": \"%s\"", tmpcapsstr);
+            g_free (capsstr);
+            g_free (tmpcapsstr);
+          }
+        } else if (G_IS_PARAM_SPEC_ENUM (spec)) {
+          _serialize_enum (json, "values", spec->value_type, &value);
+        } else if (G_IS_PARAM_SPEC_FLAGS (spec)) {
+          _serialize_flags (json, "values", spec->value_type, &value);
+        } else if (G_IS_PARAM_SPEC_BOXED (spec)) {
+          if (spec->value_type == GST_TYPE_STRUCTURE) {
+            const GstStructure *s = gst_value_get_structure (&value);
+            if (s) {
+              gchar *str = gst_structure_to_string (s);
+              gchar *tmpstr = json_strescape (str);
+
+              g_string_append_printf (json, ",\"default\": \"%s\"", tmpstr);
+              g_free (str);
+              g_free (tmpstr);
+            }
+          }
+        } else if (GST_IS_PARAM_SPEC_FRACTION (spec)) {
+          GstParamSpecFraction *pfraction = GST_PARAM_SPEC_FRACTION (spec);
+
+          g_string_append_printf (json,
+              ",\"default\": \"%d/%d\""
+              ",\"min\": \"%d/%d\""
+              ",\"max\": \"%d/%d\"",
+              gst_value_get_fraction_numerator (&value),
+              gst_value_get_fraction_denominator (&value),
+              pfraction->min_num, pfraction->min_den,
+              pfraction->max_num, pfraction->max_den);
+        }
+        break;
+    }
+
+    g_string_append_c (json, '}');
+
+
+    opened = TRUE;
+  }
+
+  if (opened)
+    g_string_append (json, "}");
+
+}
+
+static gboolean
+print_field (GQuark field, const GValue * value, GString * jcaps)
+{
+  gchar *tmp, *str = gst_value_serialize (value);
+
+  if (!g_strcmp0 (g_quark_to_string (field), "format") ||
+      !g_strcmp0 (g_quark_to_string (field), "rate")) {
+    if (!cleanup_caps_field)
+      cleanup_caps_field = g_regex_new ("\\(string\\)|\\(rate\\)", 0, 0, NULL);
+
+    tmp = str;
+    str = g_regex_replace (cleanup_caps_field, str, -1, 0, "", 0, NULL);;
+    g_free (tmp);
+  }
+
+  g_string_append_printf (jcaps, "%15s: %s\n", g_quark_to_string (field), str);
+  g_free (str);
+  return TRUE;
+}
+
+static gchar *
+_build_caps (const GstCaps * caps)
+{
+  guint i;
+  gchar *res;
+  GString *jcaps = g_string_new (NULL);
+
+  if (gst_caps_is_any (caps)) {
+    g_string_append (jcaps, "ANY");
+    return g_string_free (jcaps, FALSE);
+  }
+
+  if (gst_caps_is_empty (caps)) {
+    g_string_append (jcaps, "EMPTY");
+    return g_string_free (jcaps, FALSE);
+  }
+
+  for (i = 0; i < gst_caps_get_size (caps); i++) {
+    GstStructure *structure = gst_caps_get_structure (caps, i);
+    GstCapsFeatures *features = gst_caps_get_features (caps, i);
+
+    if (features && (gst_caps_features_is_any (features) ||
+            !gst_caps_features_is_equal (features,
+                GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) {
+      gchar *features_string = gst_caps_features_to_string (features);
+
+      g_string_append_printf (jcaps, "%s%s(%s):\n",
+          i ? "\n" : "", gst_structure_get_name (structure), features_string);
+      g_free (features_string);
+    } else {
+      g_string_append_printf (jcaps, "%s:\n",
+          gst_structure_get_name (structure));
+    }
+    gst_structure_foreach (structure, (GstStructureForeachFunc) print_field,
+        jcaps);
+  }
+
+  res = json_strescape (jcaps->str);
+  g_string_free (jcaps, TRUE);
+
+  return res;
+}
+
+static void
+_add_element_pad_templates (GString * json, GstElementFactory * factory)
+{
+  gboolean opened = FALSE;
+  const GList *pads;
+  GstStaticPadTemplate *padtemplate;
+  GRegex *re = g_regex_new ("%", 0, 0, NULL);
+
+  pads = gst_element_factory_get_static_pad_templates (factory);
+  while (pads) {
+    gchar *name, *caps;
+    padtemplate = (GstStaticPadTemplate *) (pads->data);
+    pads = g_list_next (pads);
+
+    name = g_regex_replace (re, padtemplate->name_template,
+        -1, 0, "%%", 0, NULL);;
+    caps = _build_caps (gst_static_caps_get (&padtemplate->static_caps));
+    g_string_append_printf (json, "%s"
+        "\"%s\": {"
+        "\"caps\": \"%s\","
+        "\"direction\": \"%s\","
+        "\"presence\": \"%s\"}",
+        opened ? "," : ",\"pad-templates\": {",
+        name, caps,
+        padtemplate->direction ==
+        GST_PAD_SRC ? "src" : padtemplate->direction ==
+        GST_PAD_SINK ? "sink" : "unknown",
+        padtemplate->presence ==
+        GST_PAD_ALWAYS ? "always" : padtemplate->presence ==
+        GST_PAD_SOMETIMES ? "sometimes" : padtemplate->presence ==
+        GST_PAD_REQUEST ? "request" : "unknown");
+    opened = TRUE;
+    g_free (name);
+  }
+  if (opened)
+    g_string_append (json, "}");
+
+  g_regex_unref (re);
+}
+
+static const char *
+get_rank_name (char *s, gint rank)
+{
+  static const int ranks[4] = {
+    GST_RANK_NONE, GST_RANK_MARGINAL, GST_RANK_SECONDARY, GST_RANK_PRIMARY
+  };
+  static const char *rank_names[4] = { "none", "marginal", "secondary",
+    "primary"
+  };
+  int i;
+  int best_i;
+
+  best_i = 0;
+  for (i = 0; i < 4; i++) {
+    if (rank == ranks[i])
+      return rank_names[i];
+    if (abs (rank - ranks[i]) < abs (rank - ranks[best_i])) {
+      best_i = i;
+    }
+  }
+
+  sprintf (s, "%s %c %d", rank_names[best_i],
+      (rank - ranks[best_i] > 0) ? '+' : '-', abs (ranks[best_i] - rank));
+
+  return s;
+}
+
+static void
+_add_factory_details (GString * json, GstElementFactory * factory)
+{
+  gchar **keys, **k;
+  gboolean f = TRUE;
+
+  keys = gst_element_factory_get_metadata_keys (factory);
+  if (keys != NULL) {
+    for (k = keys; *k != NULL; ++k) {
+      gchar *val;
+      gchar *key = *k;
+
+      val = json_strescape (gst_element_factory_get_metadata (factory, key));
+      g_string_append_printf (json, "%s\"%s\": \"%s\"", f ? "" : ",", key, val);
+      f = FALSE;
+      g_free (val);
+    }
+    g_strfreev (keys);
+    g_string_append (json, ",");
+  }
+}
+
+static void
+_add_element_details (GString * json, GstPluginFeature * feature)
+{
+  GType type;
+  GstElement *element =
+      gst_element_factory_create (GST_ELEMENT_FACTORY (feature), NULL);
+  char s[20];
+
+  g_assert (element);
+
+  g_string_append_printf (json,
+      "\"%s\": {"
+      "\"rank\":\"%s\",",
+      GST_OBJECT_NAME (feature),
+      get_rank_name (s, gst_plugin_feature_get_rank (feature)));
+
+  _add_factory_details (json, GST_ELEMENT_FACTORY (feature));
+
+  g_string_append (json, "\"hierarchy\": [");
+
+  for (type = G_OBJECT_TYPE (element);; type = g_type_parent (type)) {
+    g_string_append_printf (json, "\"%s\"%c", g_type_name (type),
+        type == G_TYPE_OBJECT ? ' ' : ',');
+
+    if (type == G_TYPE_OBJECT)
+      break;
+  }
+  g_string_append (json, "]");
+  _add_element_properties (json, element);
+  _add_element_signals (json, element);
+  _add_element_pad_templates (json, GST_ELEMENT_FACTORY (feature));
+
+  g_string_append (json, "}");
+}
+
+int
+main (int argc, char *argv[])
+{
+  gchar *libfile;
+  GError *error = NULL;
+  GString *json;
+  GstPlugin *plugin;
+  gboolean f = TRUE;
+  GList *features, *tmp;
+  gint i;
+  gboolean first = TRUE;
+
+  g_assert (argc >= 2);
+
+  setlocale (LC_ALL, "");
+  setlocale (LC_NUMERIC, "C");
+
+#ifdef ENABLE_NLS
+  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+  textdomain (GETTEXT_PACKAGE);
+#endif
+
+  g_setenv ("GST_REGISTRY_FORK", "no", TRUE);
+  gst_init (NULL, NULL);
+
+  json = g_string_new ("{");
+  for (i = 1; i < argc; i++) {
+    gchar *basename;
+    libfile = argv[i];
+    plugin = gst_plugin_load_file (libfile, &error);
+    if (!plugin) {
+      g_printerr ("%s could not be loaded as a GstPlugin: %s", libfile,
+          error->message ? error->message : "no known reasons");
+      g_clear_error (&error);
+
+      continue;
+    }
+
+    basename = g_filename_display_basename (libfile);
+    g_string_append_printf (json,
+        "%s\"%s\": {"
+        "\"description\":\"%s\","
+        "\"filename\":\"%s\","
+        "\"source\":\"%s\","
+        "\"package\":\"%s\","
+        "\"license\":\"%s\","
+        "\"url\":\"%s\","
+        "\"elements\":{",
+        first ? "" : ",",
+        gst_plugin_get_name (plugin),
+        gst_plugin_get_description (plugin),
+        basename,
+        gst_plugin_get_source (plugin),
+        gst_plugin_get_package (plugin),
+        gst_plugin_get_license (plugin), gst_plugin_get_origin (plugin));
+    g_free (basename);
+    first = FALSE;
+
+    features =
+        gst_registry_get_feature_list_by_plugin (gst_registry_get (),
+        gst_plugin_get_name (plugin));
+
+    f = TRUE;
+    for (tmp = features; tmp; tmp = tmp->next) {
+      GstPluginFeature *feature = tmp->data;
+      if (GST_IS_ELEMENT_FACTORY (feature)) {
+
+        if (!f)
+          g_string_append_printf (json, ",");
+        f = FALSE;
+        _add_element_details (json, feature);
+      }
+    }
+    g_string_append (json, "}}");
+  }
+
+  g_string_append_c (json, '}');
+  g_print ("%s", json->str);
+
+  return 0;
+}
--- a/docs/gst-plugins-doc-cache-generator.py
+++ b/docs/gst-plugins-doc-cache-generator.py
@ -0,0 +1,103 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright © 2018 Thibault Saunier <tsaunier@igalia.com>
+#
+# This library is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+import argparse
+import json
+import os
+import sys
+import subprocess
+
+from collections import OrderedDict
+try:
+    from collections.abc import Mapping
+except ImportError:  # python <3.3
+    from collections import Mapping
+
+
+# Marks values in the json file as "unstable" so that they are
+# not updated automatically, this aims at making the cache file
+# stable and handle corner cases were we can't automatically
+# make it happen. For properties, the best way is to use th
+# GST_PARAM_DOC_SHOW_DEFAULT flag.
+UNSTABLE_VALUE = "unstable-values"
+
+
+def dict_recursive_update(d, u):
+    unstable_values = d.get(UNSTABLE_VALUE, [])
+    if not isinstance(unstable_values, list):
+        unstable_values = [unstable_values]
+    for k, v in u.items():
+        if isinstance(v, Mapping):
+            r = dict_recursive_update(d.get(k, {}), v)
+            d[k] = r
+        elif k not in unstable_values:
+            d[k] = u[k]
+    return d
+
+
+def test_unstable_values():
+    current_cache = { "v1": "yes", "unstable-values": "v1"}
+    new_cache = { "v1": "no" }
+
+    assert(dict_recursive_update(current_cache, new_cache) == current_cache)
+
+    new_cache = { "v1": "no", "unstable-values": "v2" }
+    assert(dict_recursive_update(current_cache, new_cache) == new_cache)
+
+    current_cache = { "v1": "yes", "v2": "yay", "unstable-values": "v1",}
+    new_cache = { "v1": "no" }
+    assert(dict_recursive_update(current_cache, new_cache) == current_cache)
+
+    current_cache = { "v1": "yes", "v2": "yay", "unstable-values": "v2"}
+    new_cache = { "v1": "no", "v2": "unstable" }
+    assert(dict_recursive_update(current_cache, new_cache) == { "v1": "no", "v2": "yay", "unstable-values": "v2" })
+
+if __name__ == "__main__":
+    cache_filename = sys.argv[1]
+    output_filename = sys.argv[2]
+
+    subenv = os.environ.copy()
+    cache = {}
+    try:
+        with open(cache_filename) as f:
+            cache = json.load(f)
+    except FileNotFoundError:
+        pass
+
+    cmd = [os.path.join(os.path.dirname(os.path.realpath(__file__)), 'gst-hotdoc-plugins-scanner')]
+    gst_plugins_paths = []
+    for plugin_path in sys.argv[3:]:
+        cmd.append(plugin_path)
+        gst_plugins_paths.append(os.path.dirname(plugin_path))
+
+    if subenv.get('GST_REGISTRY_UPDATE') != 'no' and len(cmd) >= 2:
+        data = subprocess.check_output(cmd, env=subenv)
+        try:
+            plugins = json.loads(data.decode(), object_pairs_hook=OrderedDict)
+        except json.decoder.JSONDecodeError:
+            print("Could not decode:\n%s" % data.decode(), file=sys.stderr)
+            raise
+
+    new_cache = dict_recursive_update(cache, plugins)
+
+    with open(output_filename, 'w') as f:
+        json.dump(cache, f, indent=4, sort_keys=True)
+
+    if new_cache != cache:
+        with open(cache_filename, 'w') as f:
+            json.dump(cache, f, indent=4, sort_keys=True)
--- a/docs/gst/building.md
+++ b/docs/gst/building.md
@ -0,0 +1,44 @@
+---
+title: Building GStreamer and GStreamer Applications
+short-description: How to build the GStreamer framework and applications using it.
+...
+
+# Building GStreamer on UNIX
+
+On UNIX, GStreamer uses the standard GNU build system, using autoconf
+for package configuration and resolving portability issues, automake for
+building makefiles that comply with the GNU Coding Standards, and
+libtool for building shared libraries on multiple platforms. The normal
+sequence for compiling and installing the GStreamer library is thus:
+`./configure` `make` `make install`
+
+The standard options provided by GNU autoconf may be passed to the
+`configure` script. Please see the autoconf documentation or run
+`./configure --help` for information about the standard options.
+
+In addition there are several options to activate or deactivate
+features. E.g. passing `--disable-gst-debug` to `configure` will turn
+the debugging subsystem into a non-functional stub and remove all macro
+based invocations from within the library (and anything compiled against
+the library afterwards.)
+
+If library size matters and one builds in a controlled environment, it
+is also possible to totally remove subsystem code. This is intentionally
+not offered as a configure option as it causes an ABI break. Code built
+against a version of GStreamer without these modifications needs to be
+recompiled.
+`make CFLAGS="-DGST_REMOVE_DEPRECATED -DGST_REMOVE_DISABLED"`
+
+-   `GST_REMOVE_DEPRECATED` - Omit deprecated functions from the
+    library.
+
+-   `GST_REMOVE_DISABLED` - Omit stubs for disabled subsystems from the
+    library.
+
+# Building GStreamer Applications
+
+Applications and libraries can use `pkg-config` to get all the needed
+compiler and linker flags to build against GStreamer. Please note that
+GStreamer is split into several libraries itself.
+`pkg-config --list-all | grep gstreamer` will list the available
+libraries.
--- a/docs/gst/gi-index.md
+++ b/docs/gst/gi-index.md
@ -0,0 +1,6 @@
+# Core Library
+
+libgstreamer-{{ gst_api_version.md }}.so provides all the core GStreamer
+services, including initialization, plugin management and types, as well
+as the object hierarchy that defines elements and bins, along with some
+more specialized elements.
--- a/docs/gst/index.md
+++ b/docs/gst/index.md
@ -0,0 +1,6 @@
+# Core Library
+
+libgstreamer-{{ gst_api_version.md }}.so provides all the core GStreamer
+services, including initialization, plugin management and types, as well
+as the object hierarchy that defines elements and bins, along with some
+more specialized elements.
--- a/docs/gst/overview.md
+++ b/docs/gst/overview.md
@ -0,0 +1,14 @@
+---
+title: GStreamer Overview
+short-description: A simple overview of the GStreamer framework
+...
+
+# GStreamer Overview
+
+GStreamer is a streaming media framework. It uses graphs of elements which operate on data. The functionality to process media is provided by plug-ins which provide features like elements, typefinding, and so on. This allows new functionality to be added simply by installing new plug-ins.
+
+GStreamer is cross-platform and works on most UNIX-like platforms as well as Windows. It is released under the GNU Library General Public License (GNU LGPL).
+
+Relation between gstreamer core objects:
+
+![GStreamer universe](images/gst-universe.svg)
--- a/docs/gst/running.md
+++ b/docs/gst/running.md
@ -0,0 +1,314 @@
+---
+title: Running GStreamer Applications
+short-description: How to run and debug your GStreamer application
+...
+
+# Running and debugging GStreamer Applications
+
+## Environment variables
+
+GStreamer inspects a few of environment variables in addition to
+standard variables like LANG, PATH or HOME.
+
+**`GST_PLUGIN_SYSTEM_PATH`, `GST_PLUGIN_SYSTEM_PATH_1_0`.**
+
+This environment variable can be set to a colon-separated list of paths
+(or semicolon-separated list on Windows). If this variable is not set,
+GStreamer will fill in this list for you with
+
+-   plug-ins in the user's home directory, or rather the user's "data
+    home" directory according to the xdg base dir specification.
+    Usually this will be a directory called `plugins` inside the
+    `.local/share/gstreamer-GST_API_VERSION` directory in the user's
+    home directory by default, though this search path may change if the
+    XDG_DATA_HOME environment variable is set.
+
+-   plug-ins installed system-wide. On this system, they are stored in
+    ``.
+
+GStreamer will scan these paths for GStreamer plug-ins. These plug-ins
+will be loaded after the plug-ins in the GST_PLUGIN_PATH variable
+below. The paths are scanned in the given order. This allows a user to
+override system-installed plug-ins with his own versions.
+
+The GST_PLUGIN_SYSTEM_PATH_1_0 variant is useful if both the old
+GStreamer 0.10 version and the new GStreamer 1.0 version need to be
+pointed to new plugin paths. The latter will use the _1_0 variant over
+the non-versioned one if it is set.
+
+Setting this variable to an empty string will cause GStreamer not to
+scan any system paths at all for plug-ins. This can be useful if you're
+running uninstalled (for development purposes) or while running
+testsuites.
+
+**`GST_PLUGIN_PATH`, `GST_PLUGIN_PATH_1_0`.**
+
+This environment variable can be set to a colon-separated list of paths
+(or a semicolon-separated list on Windows). GStreamer will scan these
+paths for GStreamer plug-ins. These plug-ins will be loaded in addition
+to, and before, the plug-ins in the system paths.
+
+The GST_PLUGIN_PATH_1_0 variant is useful if both the old GStreamer
+0.10 version and the new GStreamer 1.0 version need to be pointed to new
+plugin paths. The latter will use the `_1_0` variant over the
+non-versioned one if it is set.
+
+**`GST_DEBUG.`**
+
+If GStreamer has been configured with `--enable-gst-debug=yes`, this
+variable can be set to a list of debug options, which cause GStreamer to
+print out different types of debugging information to stderr.
+
+The variable takes a comma-separated list of `category_name:level`
+pairs to set specific levels for the individual categories. The level
+value ranges from 0 (nothing) to 9 (MEMDUMP).
+
+1 - `ERROR`
+
+:   Logs all fatal errors. These are errors that do not allow the core
+    or elements to perform the requested action. The application can
+    still recover if programmed to handle the conditions that triggered
+    the error.
+
+2 - `WARNING`
+
+:   Logs all warnings. Typically these are non-fatal, but user-visible
+    problems are expected to happen.
+
+3 - `FIXME`
+
+:   Logs all fixme messages. Fixme messages are messages that indicate
+    that something in the executed code path is not fully implemented or
+    handled yet. The purpose of this message is to make it easier to
+    spot incomplete/unfinished pieces of code when reading the debug
+    log.
+
+4 - `INFO`
+
+:   Logs all informational messages. These are typically used for events
+    in the system that only happen once, or are important and rare
+    enough to be logged at this level.
+
+5 - `DEBUG`
+
+:   Logs all debug messages. These are general debug messages for events
+    that happen only a limited number of times during an object's
+    lifetime; these include setup, teardown, change of parameters, ...
+
+6 - `LOG`
+
+:   Logs all log messages. These are messages for events that happen
+    repeatedly during an object's lifetime; these include streaming and
+    steady-state conditions.
+
+7 - `TRACE`
+
+:   Logs all trace messages. These messages for events that happen
+    repeatedly during an object's lifetime such as the ref/unref
+    cycles.
+
+9 - `MEMDUMP`
+
+:   Log all memory dump messages. Memory dump messages are used to log
+    (small) chunks of data as memory dumps in the log. They will be
+    displayed as hexdump with ASCII characters.
+
+The category_name can contain "`*"` as a wildcard.
+
+For example, setting `GST_DEBUG` to `GST_AUTOPLUG:6,GST_ELEMENT_*:4`,
+will cause the `GST_AUTOPLUG` category to be logged at full `LOG` level,
+while all categories starting with `GST_ELEMENT_` will be logged at
+`INFO` level.
+
+To get all possible debug output, set `GST_DEBUG` to `*:9`. For debugging
+purposes a `*:6` debug log is usually the most useful, as it contains
+all important information, but hides a lot of noise such as refs/unrefs.
+For bug reporting purposes, a `*:6` log is also what will be requested
+usually. It's often also worth running with `*:3` to see if there are
+any non-fatal errors or warnings that might be related to the problem at
+hand.
+
+Since GStreamer 1.2 it is also possible to specify debug levels by name,
+e.g. `GST_DEBUG=*:WARNING,*audio*:LOG`
+
+**`GST_DEBUG_NO_COLOR.*`*
+
+Set this environment variable to any value ("1" typically) to switch
+off colouring in `GST_DEBUG` output. This has the same effect as
+specifying the `--gst-debug-no-color` or `--gst-debug-color-mode`=off
+command line option to well-behaved GStreamer applications (ie. those
+that pass command-line options correctly to GStreamer). This is
+particularly useful to reduce the size of debug output and also allows
+for the output to be compressed much better than with colours turned on.
+
+Has the same effect as setting `GST_DEBUG_COLOR_MODE` environment
+variable to "off".
+
+**`GST_DEBUG_COLOR_MODE.`**
+
+Set this environment variable to change log colouring in `GST_DEBUG` output.
+Possible values:
+
+`on`: Enables debug log output coloring. Uses default coloring method for
+current platform. This is the default.
+
+`off`: Disables debug log output coloring. This has the same effect as
+specifying the `--gst-debug-color-mode=off` command line option to well-behaved
+GStreamer applications (ie. those that pass command-line options correctly to
+GStreamer). This is particularly useful to reduce the size of debug output and
+also allows for the output to be compressed much better than with colours turned
+on. Has the same effect as setting `GST_DEBUG_NO_COLOR` environment variable to
+any value.
+
+`auto`: Same as `on`.
+
+`disable`: Same as `off`.
+
+`unix`: Enables debug log output coloring and forces the use of UNIX termial
+codes for coloring, even if this method is not normally used on current
+platform. This has the same effect as specifying the
+`--gst-debug-color-mode=unix` command line option to well-behaved GStreamer
+applications (ie. those that pass command-line options correctly to GStreamer).
+This is particularly useful to dump debug output into a file on non-UNIX
+platforms to be sent to developers who have viewers that support UNIX terminal
+codes.
+
+**`GST_DEBUG_OPTIONS.`**
+
+This environment variable can be used to tweak the behaviour of the
+debugging system. Currently the only options supported are
+"pretty-tags" and "full-tags". In "pretty-tags" mode (the
+default), taglists in the debug log will be serialized so that only the
+first few and last few bytes of a buffer-type tag will be serialized
+into the log, to avoid dumping hundreds of lines of useless output into
+the log in case of large image tags and the like.
+
+**`GST_DEBUG_DUMP_DOT_DIR.`**
+
+Set this environment variable to a path to turn on all
+`GST_DEBUG_BIN_TO_DOT_FILE` or `GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS` calls and
+have the dot files in that location.
+
+This will only work if the application in question makes these calls in
+strategic places (like when the pipeline state changes or an error
+occurs). `gst-launch-1,0` is one such application.
+
+When `gst-launch-1.0` changes state through NULL to PLAYING
+and back to NULL, a dot file is generated on each state change. To have
+`gst-launch-1.0` write a snapshot of the pipeline state,
+send a SIGHUP to the `gst-launch-1.0` process.
+
+These .dot files can then be turned into images using the 'dot'
+utility from the graphviz set of tools, like this:
+`dot foo.dot -Tsvg -o foo.svg` or `dot foo.dot -Tpng -o foo.png` or
+`dot foo.dot -Tjpg -o foo.jpg`.
+
+There is also a utility called `xdot` which allows you to view the dot
+file directly without converting it first.
+
+**`GST_REGISTRY`, `GST_REGISTRY_1_0`.**
+
+Set this environment variable to make GStreamer use a different file for
+the plugin cache / registry than the default one. This is useful when
+operating in a separate environment which should not affect the default
+cache in the user's home directory.
+
+**`GST_REGISTRY_FORK`.**
+
+Set this environment variable to "no" to prevent GStreamer from
+forking on startup in order to update the plugin registry. This is
+useful for debugging purposes, but should not be used under normal
+circumstances, since it means that plugins may be loaded into memory
+even if they are not needed by the application.
+
+**`GST_REGISTRY_UPDATE`.**
+
+Set this environment variable to "no" to prevent GStreamer from
+updating the plugin registry. This is useful for embedded device which
+is not updating the plugins frequently, it will save time when doing
+`gst_init()`.
+
+**GST_TRACE.**
+
+Enable memory allocation tracing. Most GStreamer objects have support
+for tracing the number of unfreed objects and their memory pointers.
+
+The variable takes a comma-separated list of tracing options to enable.
+
+live
+
+:   Counts all live objects and dumps an overview of the number of
+    unfreed objects at program exit.
+
+mem-live
+
+:   Keep track of the unfreed memory pointers and dump an overview of
+    all unfreed memory at program exit. Together with a level 9 debug
+    log this can be used to follow the lifecycle of leaked objects in
+    order to track down where they are leaked. This can be useful for
+    debugging memory leaks in situations where tools such as valgrind
+    are not available, or not an option.
+
+Use `all` to enable all tracing flags.
+
+**`GST_DEBUG_FILE`.**
+
+Set this variable to a file path to redirect all GStreamer debug
+messages to this file. If left unset, debug messages with be output unto
+the standard error.
+
+**`ORC_CODE`.**
+
+Useful Orc environment variable. Set `ORC_CODE=debug` to enable debuggers
+such as gdb to create useful backtraces from Orc-generated code. Set
+`ORC_CODE=backup` or `ORC_CODE=emulate` if you suspect Orc's SIMD code
+generator is producing incorrect code (Quite a few important GStreamer
+plugins like videotestsrc, audioconvert or audioresample use Orc). One
+can also combine flags like `ORC_CODE=backup,debug`.
+
+**`G_DEBUG`.**
+
+Useful GLib environment variable. Set `G_DEBUG=fatal_warnings` to make
+GStreamer programs abort when a critical warning such as an assertion
+failure occurs. This is useful if you want to find out which part of the
+code caused that warning to be triggered and under what circumstances.
+Simply set `G_DEBUG` as mentioned above and run the program in gdb (or
+let it core dump). Then get a stack trace in the usual way.
+
+**`G_SLICE`.**
+
+Useful GLib environment variable. Set `G_SLICE=always-malloc` when
+running GStreamer programs in valgrind, or debugging memory leaks with
+other tools. See the GLib API reference for more details.
+
+**`GST_TAG_ENCODING`.**
+
+Try this character encoding first for tag-related strings where the
+encoding is not defined and which are not UTF-8 already. By default the
+current locale will be tried (if not UTF-8).
+
+**`GST_TAG_ID3_ENCODING`.**
+
+Try this character encoding first for ID3 tag-related strings where the
+encoding is not defined and which are not UTF-8 already. By default the
+current locale will be tried (if not UTF-8).
+
+**`GST_TAG_ID3V1_ENCODING`.**
+
+Try this character encoding first for ID3v1 tag-related strings where
+the encoding does not look like UTF-8.
+
+**`GST_GL_WINDOW`.**
+
+Influences the window system to use by the GStreamer OpenGL library.
+Common values are 'x11', 'wayland', 'win32' or 'cocoa'.
+
+**`GST_GL_PLATFORM`.**
+
+Influences the OpenGL platform to use by the GStreamer OpenGL library.
+Common values are 'egl', 'glx', 'wgl' or 'cgl'.
+
+**`GST_GL_API`.**
+
+Influences the OpenGL API requested by the OpenGL platform. Common
+values are 'opengl' or 'gles2'.
--- a/docs/gst/sitemap.txt
+++ b/docs/gst/sitemap.txt
@ -0,0 +1,3 @@
+gi-index
+	running.md
+	gst.h
--- a/docs/images/gdp-header.png
+++ b/docs/images/gdp-header.png
--- a/docs/images/gdp-header.svg
+++ b/docs/images/gdp-header.svg
@ -1,906 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
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+<text text-anchor="middle" x="95" y="-443.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">bus</text>
+</a>
+</g>
+</g>
+<!-- application&#45;&gt;bus -->
+<g id="edge24" class="edge">
+<title>application&#45;&gt;bus</title>
+<path fill="none" stroke="#000000" d="M510.9115,-603.0792C430.1757,-595.561 225.2233,-574.007 164,-544 132.3738,-528.4992 123.8974,-520.3344 106,-490 103.0991,-485.0833 100.9591,-479.4225 99.3816,-473.8334"/>
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+</g>
+<!-- event -->
+<g id="node9" class="node">
+<title>event</title>
+<g id="a_node9"><a xlink:href="gstreamer-GstEvent.html" xlink:title="event" target="_top">
+<polygon fill="#ddffdd" stroke="#000000" points="585,-304 531,-304 531,-268 585,-268 585,-304"/>
+<text text-anchor="middle" x="558" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">event</text>
+</a>
+</g>
+</g>
+<!-- application&#45;&gt;event -->
+<g id="edge26" class="edge">
+<title>application&#45;&gt;event</title>
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+</g>
+<!-- pipeline -->
+<g id="node13" class="node">
+<title>pipeline</title>
+<g id="a_node13"><a xlink:href="GstPipeline.html" xlink:title="pipeline" target="_top">
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+<text text-anchor="middle" x="232" y="-523.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">pipeline</text>
+</a>
+</g>
+</g>
+<!-- application&#45;&gt;pipeline -->
+<g id="edge23" class="edge">
+<title>application&#45;&gt;pipeline</title>
+<path fill="none" stroke="#000000" d="M510.9059,-597.5143C452.3458,-582.4989 330.8592,-551.3485 269.3763,-535.5837"/>
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+</g>
+<!-- query -->
+<g id="node16" class="node">
+<title>query</title>
+<g id="a_node16"><a xlink:href="gstreamer-GstQuery.html" xlink:title="query" target="_top">
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+</a>
+</g>
+</g>
+<!-- application&#45;&gt;query -->
+<g id="edge25" class="edge">
+<title>application&#45;&gt;query</title>
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+</g>
+<!-- bin -->
+<g id="node2" class="node">
+<title>bin</title>
+<g id="a_node2"><a xlink:href="GstBin.html" xlink:title="bin" target="_top">
+<polygon fill="#ccccff" stroke="#000000" points="343,-464 289,-464 289,-428 343,-428 343,-464"/>
+<text text-anchor="middle" x="316" y="-443.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">bin</text>
+</a>
+</g>
+</g>
+<!-- element -->
+<g id="node7" class="node">
+<title>element</title>
+<g id="a_node7"><a xlink:href="GstElement.html" xlink:title="element" target="_top">
+<polygon fill="#ccccff" stroke="#000000" points="379,-384 325,-384 325,-348 379,-348 379,-384"/>
+<text text-anchor="middle" x="352" y="-363.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">element</text>
+</a>
+</g>
+</g>
+<!-- bin&#45;&gt;element -->
+<g id="edge1" class="edge">
+<title>bin&#45;&gt;element</title>
+<path fill="none" stroke="#000000" d="M313.4728,-427.8198C313.0652,-419.637 313.6319,-410.0331 317,-402 318.4683,-398.498 320.4504,-395.1455 322.7289,-391.9929"/>
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+</g>
+<!-- bin&#45;&gt;element -->
+<g id="edge12" class="edge">
+<title>bin&#45;&gt;element</title>
+<path fill="none" stroke="#000000" d="M324.169,-427.8468C328.7718,-417.6183 334.6118,-404.6405 339.7523,-393.217"/>
+<polygon fill="#000000" stroke="#000000" points="342.9514,-394.6369 343.8634,-384.0814 336.5679,-391.7643 342.9514,-394.6369"/>
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+</g>
+<!-- message -->
+<g id="node10" class="node">
+<title>message</title>
+<g id="a_node10"><a xlink:href="gstreamer-GstMessage.html" xlink:title="message" target="_top">
+<polygon fill="#ddffdd" stroke="#000000" points="128,-304 72,-304 72,-268 128,-268 128,-304"/>
+<text text-anchor="middle" x="100" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">message</text>
+</a>
+</g>
+</g>
+<!-- bus&#45;&gt;message -->
+<g id="edge19" class="edge">
+<title>bus&#45;&gt;message</title>
+<path fill="none" stroke="#000000" d="M95.5638,-427.957C96.4266,-400.3487 98.082,-347.3746 99.1086,-314.5255"/>
+<polygon fill="#000000" stroke="#000000" points="102.6164,-314.327 99.4305,-304.2226 95.6198,-314.1083 102.6164,-314.327"/>
+<text text-anchor="middle" x="111.5" y="-364.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">receive</text>
+</g>
+<!-- buffer -->
+<g id="node4" class="node">
+<title>buffer</title>
+<g id="a_node4"><a xlink:href="gstreamer-GstBuffer.html" xlink:title="buffer" target="_top">
+<polygon fill="#ddffdd" stroke="#000000" points="521,-250 467,-250 467,-214 521,-214 521,-250"/>
+<text text-anchor="middle" x="494" y="-229.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">buffer</text>
+</a>
+</g>
+</g>
+<!-- caps -->
+<g id="node5" class="node">
+<title>caps</title>
+<g id="a_node5"><a xlink:href="gstreamer-GstCaps.html" xlink:title="caps" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="472,-116 418,-116 418,-80 472,-80 472,-116"/>
+<text text-anchor="middle" x="445" y="-95.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">caps</text>
+</a>
+</g>
+</g>
+<!-- buffer&#45;&gt;caps -->
+<g id="edge10" class="edge">
+<title>buffer&#45;&gt;caps</title>
+<path fill="none" stroke="#000000" d="M487.8971,-213.8918C482.9336,-199.2961 475.6823,-178.2673 469,-160 464.7467,-148.3727 463.4659,-145.5473 459,-134 457.9568,-131.3027 456.8678,-128.4926 455.7781,-125.6842"/>
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+</g>
+<!-- structure -->
+<g id="node18" class="node">
+<title>structure</title>
+<g id="a_node18"><a xlink:href="gstreamer-GstStructure.html" xlink:title="structure" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="474.5,-36 415.5,-36 415.5,0 474.5,0 474.5,-36"/>
+<text text-anchor="middle" x="445" y="-15.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">structure</text>
+</a>
+</g>
+</g>
+<!-- caps&#45;&gt;structure -->
+<g id="edge11" class="edge">
+<title>caps&#45;&gt;structure</title>
+<path fill="none" stroke="#000000" d="M445,-79.8468C445,-69.9251 445,-57.4167 445,-46.2492"/>
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+</g>
+<!-- clock -->
+<g id="node6" class="node">
+<title>clock</title>
+<g id="a_node6"><a xlink:href="GstClock.html" xlink:title="clock" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="200,-304 146,-304 146,-268 200,-268 200,-304"/>
+<text text-anchor="middle" x="173" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">clock</text>
+</a>
+</g>
+</g>
+<!-- element&#45;&gt;buffer -->
+<g id="edge17" class="edge">
+<title>element&#45;&gt;buffer</title>
+<path fill="none" stroke="#000000" d="M379.0052,-348.1841C387.6581,-342.4256 397.2602,-335.9827 406,-330 422.585,-318.647 428.7615,-318.1851 443,-304 456.442,-290.6085 468.8159,-273.3197 478.0084,-259.0402"/>
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+</g>
+<!-- element&#45;&gt;clock -->
+<g id="edge7" class="edge">
+<title>element&#45;&gt;clock</title>
+<path fill="none" stroke="#000000" d="M324.9778,-361.1851C299.2847,-355.9049 260.0596,-345.9868 229,-330 218.9195,-324.8114 208.8758,-317.6948 200.1358,-310.6969"/>
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+<text text-anchor="middle" x="251.5" y="-324.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">may provide</text>
+</g>
+<!-- element_factory -->
+<g id="node8" class="node">
+<title>element_factory</title>
+<g id="a_node8"><a xlink:href="GstElementFactory.html" xlink:title="element factory" target="_top">
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+<text text-anchor="middle" x="262" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">element factory</text>
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+</g>
+</g>
+<!-- element&#45;&gt;element_factory -->
+<g id="edge14" class="edge">
+<title>element&#45;&gt;element_factory</title>
+<path fill="none" stroke="#000000" d="M324.8244,-356.6294C310.9201,-350.7366 294.5406,-341.9588 283,-330 278.4484,-325.2835 274.729,-319.3944 271.7547,-313.4736"/>
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+<text text-anchor="middle" x="310.5" y="-324.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">is created from</text>
+</g>
+<!-- element&#45;&gt;event -->
+<g id="edge16" class="edge">
+<title>element&#45;&gt;event</title>
+<path fill="none" stroke="#000000" d="M379.0347,-360.7461C406.0174,-355.003 448.3405,-344.6282 483,-330 496.4301,-324.3318 510.3994,-316.6794 522.5904,-309.3462"/>
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+</g>
+<!-- element&#45;&gt;message -->
+<g id="edge18" class="edge">
+<title>element&#45;&gt;message</title>
+<path fill="none" stroke="#000000" d="M324.9822,-361.5785C293.1497,-355.9741 238.9085,-345.1811 194,-330 170.198,-321.9538 163.449,-316.9228 137.4211,-304.2336"/>
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+<text text-anchor="middle" x="203" y="-324.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">send</text>
+</g>
+<!-- pad -->
+<g id="node11" class="node">
+<title>pad</title>
+<g id="a_node11"><a xlink:href="GstPad.html" xlink:title="pad" target="_top">
+<polygon fill="#ccccff" stroke="#000000" points="434,-304 380,-304 380,-268 434,-268 434,-304"/>
+<text text-anchor="middle" x="407" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">pad</text>
+</a>
+</g>
+</g>
+<!-- element&#45;&gt;pad -->
+<g id="edge6" class="edge">
+<title>element&#45;&gt;pad</title>
+<path fill="none" stroke="#000000" d="M364.4804,-347.8468C371.6531,-337.4137 380.7923,-324.1203 388.7582,-312.5335"/>
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+</g>
+<!-- pad_template -->
+<g id="node12" class="node">
+<title>pad_template</title>
+<g id="a_node12"><a xlink:href="GstPadTemplate.html" xlink:title="pad template" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="408.5,-196 331.5,-196 331.5,-160 408.5,-160 408.5,-196"/>
+<text text-anchor="middle" x="370" y="-175.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">pad template</text>
+</a>
+</g>
+</g>
+<!-- element&#45;&gt;pad_template -->
+<g id="edge5" class="edge">
+<title>element&#45;&gt;pad_template</title>
+<path fill="none" stroke="#000000" d="M351.6297,-347.8244C351.397,-335.4673 351.1189,-318.748 351,-304 350.871,-288.0005 349.3386,-283.9135 351,-268 353.1835,-247.0865 358.1473,-223.877 362.4537,-206.266"/>
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+<!-- element&#45;&gt;query -->
+<g id="edge15" class="edge">
+<title>element&#45;&gt;query</title>
+<path fill="none" stroke="#000000" d="M379.0863,-363.5768C418.8478,-359.5008 495.0155,-349.7102 557,-330 576.3889,-323.8346 596.9357,-314.4447 613.7714,-305.9205"/>
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+<text text-anchor="middle" x="594" y="-324.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">answers</text>
+</g>
+<!-- plugin_feature -->
+<g id="node15" class="node">
+<title>plugin_feature</title>
+<g id="a_node15"><a xlink:href="GstPluginFeature.html" xlink:title="plugin feature" target="_top">
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+<text text-anchor="middle" x="121" y="-175.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">plugin feature</text>
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+</g>
+</g>
+<!-- element_factory&#45;&gt;plugin_feature -->
+<g id="edge22" class="edge">
+<title>element_factory&#45;&gt;plugin_feature</title>
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+<!-- pad&#45;&gt;caps -->
+<g id="edge8" class="edge">
+<title>pad&#45;&gt;caps</title>
+<path fill="none" stroke="#000000" d="M421.5944,-267.8888C425.2714,-262.4333 428.7961,-256.2319 431,-250 438.8006,-227.9426 442.5008,-164.0023 444.0459,-126.4479"/>
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+</g>
+<!-- pad&#45;&gt;pad_template -->
+<g id="edge13" class="edge">
+<title>pad&#45;&gt;pad_template</title>
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+</g>
+<!-- pad_template&#45;&gt;caps -->
+<g id="edge9" class="edge">
+<title>pad_template&#45;&gt;caps</title>
+<path fill="none" stroke="#000000" d="M386.7291,-159.9921C394.1513,-152.0167 402.9991,-142.5287 411,-134 414.1284,-130.6653 417.4244,-127.1622 420.6835,-123.7048"/>
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+<!-- pipeline&#45;&gt;bin -->
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+<title>pipeline&#45;&gt;bin</title>
+<path fill="none" stroke="#000000" d="M251.0609,-507.8468C262.4452,-497.0045 277.0731,-483.0732 289.5625,-471.1785"/>
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+<text text-anchor="middle" x="283.5" y="-484.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">is&#45;a</text>
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+<!-- pipeline&#45;&gt;bus -->
+<g id="edge3" class="edge">
+<title>pipeline&#45;&gt;bus</title>
+<path fill="none" stroke="#000000" d="M204.6065,-523.7303C178.9936,-520.2926 141.0367,-511.6598 116,-490 110.959,-485.6389 107.0322,-479.7973 104.0111,-473.7986"/>
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+<text text-anchor="middle" x="126" y="-484.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">has 1</text>
+</g>
+<!-- pipeline&#45;&gt;clock -->
+<g id="edge4" class="edge">
+<title>pipeline&#45;&gt;clock</title>
+<path fill="none" stroke="#000000" d="M224.1619,-507.8066C209.9486,-473.7131 180.4285,-397.5454 170,-330 169.2231,-324.968 169.0522,-319.5812 169.225,-314.3635"/>
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+<text text-anchor="middle" x="199" y="-404.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">has 1</text>
+</g>
+<!-- plugin -->
+<g id="node14" class="node">
+<title>plugin</title>
+<g id="a_node14"><a xlink:href="GstPlugin.html" xlink:title="plugin" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="54,-304 0,-304 0,-268 54,-268 54,-304"/>
+<text text-anchor="middle" x="27" y="-283.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">plugin</text>
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+<!-- plugin&#45;&gt;plugin_feature -->
+<g id="edge21" class="edge">
+<title>plugin&#45;&gt;plugin_feature</title>
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+</g>
+<!-- registry -->
+<g id="node17" class="node">
+<title>registry</title>
+<g id="a_node17"><a xlink:href="GstRegistry.html" xlink:title="registry" target="_top">
+<polygon fill="#eeeeee" stroke="#000000" points="54,-384 0,-384 0,-348 54,-348 54,-384"/>
+<text text-anchor="middle" x="27" y="-363.8" font-family="Bitstream Vera Sans" font-size="9.00" fill="#000000">registry</text>
+</a>
+</g>
+</g>
+<!-- registry&#45;&gt;plugin -->
+<g id="edge20" class="edge">
+<title>registry&#45;&gt;plugin</title>
+<path fill="none" stroke="#000000" d="M27,-347.8468C27,-337.9251 27,-325.4167 27,-314.2492"/>
+<polygon fill="#000000" stroke="#000000" points="30.5001,-314.0814 27,-304.0814 23.5001,-314.0814 30.5001,-314.0814"/>
+<text text-anchor="middle" x="37" y="-324.4" font-family="Bitstream Vera Sans" font-size="7.00" fill="#000000">has n</text>
+</g>
+</g>
+</svg>
--- a/docs/index.md
+++ b/docs/index.md
@ -0,0 +1,336 @@
+---
+short-description:  GStreamer core API reference.
+...
+
+# GStreamer Core
+
+GStreamer is a streaming media framework. It uses graphs of elements
+which operate on data. The functionality to process media is provided by
+plug-ins which provide features like elements, typefinding, and so on.
+This allows new functionality to be added simply by installing new
+plug-ins.
+
+GStreamer is cross-platform and works on most UNIX-like platforms as
+well as Windows. It is released under the GNU Library General Public
+License (GNU LGPL).
+
+![ Relation between gstreamer core objects. ]
+
+  [ Relation between gstreamer core objects. ]: images/gst-universe.svg
+
+## Building on UNIX
+
+On UNIX, GStreamer uses the standard GNU build system, using autoconf
+for package configuration and resolving portability issues, automake for
+building makefiles that comply with the GNU Coding Standards, and
+libtool for building shared libraries on multiple platforms. The normal
+sequence for compiling and installing the GStreamer library is thus:
+`./configure` `make` `make install`
+
+The standard options provided by GNU autoconf may be passed to the
+`configure` script. Please see the autoconf documentation or run
+`./configure --help` for information about the standard options.
+
+In addition there are several options to activate or deactivate
+features. E.g. passing `--disable-gst-debug` to `configure` will turn
+the debugging subsystem into a non-functional stub and remove all macro
+based invocations from within the library (and anything compiled against
+the library afterwards.)
+
+If library size matters and one builds in a controlled environment, it
+is also possible to totally remove subsystem code. This is intentionally
+not offered as a configure option as it causes an ABI break. Code built
+against a version of GStreamer without these modifications needs to be
+recompiled.
+
+`make CFLAGS="-DGST_REMOVE_DEPRECATED -DGST_REMOVE_DISABLED"`
+
+-   `GST_REMOVE_DEPRECATED` - Omit deprecated functions from the
+    library.
+
+-   `GST_REMOVE_DISABLED` - Omit stubs for disabled subsystems from the
+    library.
+
+## Building GStreamer Applications
+
+Applications and libraries can use `pkg-config` to get all the needed
+compiler and linker flags to build against GStreamer. Please note that
+GStreamer is split into several libraries itself.
+`pkg-config --list-all | grep gstreamer` will list the available
+libraries.
+
+## Running and debugging GStreamer Applications
+
+### Environment variables
+
+GStreamer inspects a few of environment variables in addition to
+standard variables like LANG, PATH or HOME.
+
+**GST_PLUGIN_SYSTEM_PATH, GST_PLUGIN_SYSTEM_PATH_1_0.**
+
+This environment variable can be set to a colon-separated list of paths
+(or semicolon-separated list on Windows). If this variable is not set,
+GStreamer will fill in this list for you with
+
+-   plug-ins in the user's home directory, or rather the user's "data
+    home" directory according to the xdg base dir specification. Usually
+    this will be a directory called `plugins` inside the
+    `.local/share/gstreamer-GST_API_VERSION` directory in the user's
+    home directory by default, though this search path may change if the
+    XDG_DATA_HOME environment variable is set.
+
+-   plug-ins installed system-wide. On this system, they are stored in
+    `GST_PLUGINS_DIR`.
+
+GStreamer will scan these paths for GStreamer plug-ins. These plug-ins
+will be loaded after the plug-ins in the GST_PLUGIN_PATH variable
+below. The paths are scanned in the given order. This allows a user to
+override system-installed plug-ins with his own versions.
+
+The GST_PLUGIN_SYSTEM_PATH_1_0 variant is useful if both the old
+GStreamer 0.10 version and the new GStreamer 1.0 version need to be
+pointed to new plugin paths. The latter will use the _1_0 variant over
+the non-versioned one if it is set.
+
+Setting this variable to an empty string will cause GStreamer not to
+scan any system paths at all for plug-ins. This can be useful if you're
+running uninstalled (for development purposes) or while running
+testsuites.
+
+**GST_PLUGIN_PATH, GST_PLUGIN_PATH_1_0.**
+
+This environment variable can be set to a colon-separated list of paths
+(or a semicolon-separated list on Windows). GStreamer will scan these
+paths for GStreamer plug-ins. These plug-ins will be loaded in addition
+to, and before, the plug-ins in the system paths.
+
+The GST_PLUGIN_PATH_1_0 variant is useful if both the old GStreamer
+0.10 version and the new GStreamer 1.0 version need to be pointed to new
+plugin paths. The latter will use the _1_0 variant over the
+non-versioned one if it is set.
+
+**GST_DEBUG.**
+
+If GStreamer has been configured with `--enable-gst-debug=yes`, this
+variable can be set to a list of debug options, which cause GStreamer to
+print out different types of debugging information to stderr.
+
+The variable takes a comma-separated list of "category_name:level"
+pairs to set specific levels for the individual categories. The level
+value ranges from 0 (nothing) to 9 (MEMDUMP).
+
+* 1 - `ERROR`: Logs all fatal errors. These are errors that do not allow the core
+    or elements to perform the requested action. The application can
+    still recover if programmed to handle the conditions that triggered
+    the error.
+* 2 - `WARNING`: Logs all warnings. Typically these are non-fatal, but user-visible
+    problems are expected to happen.
+* 3 - `FIXME`: Logs all fixme messages. Fixme messages are messages that indicate
+    that something in the executed code path is not fully implemented or
+    handled yet. The purpose of this message is to make it easier to
+    spot incomplete/unfinished pieces of code when reading the debug
+    log.
+* 4 - `INFO`: Logs all informational messages. These are typically used for events
+    in the system that only happen once, or are important and rare
+    enough to be logged at this level.
+* 5 - `DEBUG`: Logs all debug messages. These are general debug messages for events
+    that happen only a limited number of times during an object's
+    lifetime; these include setup, teardown, change of parameters, ...
+* 6 - `LOG`: Logs all log messages. These are messages for events that happen
+    repeatedly during an object's lifetime; these include streaming and
+    steady-state conditions.
+* 7 - `TRACE`: Logs all trace messages. These messages for events that happen
+    repeatedly during an object's lifetime such as the ref/unref cycles.
+* 9 - `MEMDUMP`: Log all memory dump messages. Memory dump messages are used to log
+    (small) chunks of data as memory dumps in the log. They will be
+    displayed as hexdump with ASCII characters.
+
+The category_name can contain "`*"` as a wildcard.
+
+For example, setting GST_DEBUG to `GST_AUTOPLUG:6,GST_ELEMENT_*:4`,
+will cause the `GST_AUTOPLUG` category to be logged at full `LOG` level,
+while all categories starting with `GST_ELEMENT_` will be logged at
+`INFO` level.
+
+To get all possible debug output, set GST_DEBUG to `*:9`. For debugging
+purposes a `*:6` debug log is usually the most useful, as it contains
+all important information, but hides a lot of noise such as refs/unrefs.
+For bug reporting purposes, a `*:6` log is also what will be requested
+usually. It's often also worth running with `*:3` to see if there are
+any non-fatal errors or warnings that might be related to the problem at
+hand.
+
+Since GStreamer 1.2 it is also possible to specify debug levels by name,
+e.g. GST_DEBUG=*:WARNING,*audio*:LOG
+
+**GST_DEBUG_NO_COLOR.**
+
+Set this environment variable to any value ("1" typically) to switch off
+colouring in GST_DEBUG output. This has the same effect as specifying
+the `--gst-debug-no-color` or `--gst-debug-color-mode`=off command line
+option to well-behaved GStreamer applications (ie. those that pass
+command-line options correctly to GStreamer). This is particularly
+useful to reduce the size of debug output and also allows for the output
+to be compressed much better than with colours turned on.
+
+Has the same effect as setting GST_DEBUG_COLOR_MODE environment
+variable to "off".
+
+**GST_DEBUG_COLOR_MODE.**
+
+Set this environment variable to change log colouring in GST_DEBUG
+output. Possible values:
+
+* `on`: Enables debug log output coloring. Uses default coloring method for
+  current platform. This is the default.
+* `off`: Disables debug log output coloring. This has the same effect as
+  specifying the `--gst-debug-color-mode`=off command line option to
+  well-behaved GStreamer applications (ie. those that pass
+  command-line options correctly to GStreamer). This is particularly
+  useful to reduce the size of debug output and also allows for the
+  output to be compressed much better than with colours turned on.
+
+  Has the same effect as setting GST_DEBUG_NO_COLOR environment
+  variable to any value.
+* `auto`: Same as `on`.
+* `disable`: Same as `off`.
+* `unix`: Enables debug log output coloring and forces the use of UNIX termial
+  codes for coloring, even if this method is not normally used on
+  current platform. This has the same effect as specifying the
+  `--gst-debug-color-mode`=unix command line option to well-behaved
+  GStreamer applications (ie. those that pass command-line options
+  correctly to GStreamer). This is particularly useful to dump debug
+  output into a file on non-UNIX platforms to be sent to developers
+  who have viewers that support UNIX terminal codes.
+
+**GST_DEBUG_OPTIONS.**
+
+This environment variable can be used to tweak the behaviour of the
+debugging system. Currently the only options supported are "pretty-tags"
+and "full-tags". In "pretty-tags" mode (the default), taglists in the
+debug log will be serialized so that only the first few and last few
+bytes of a buffer-type tag will be serialized into the log, to avoid
+dumping hundreds of lines of useless output into the log in case of
+large image tags and the like.
+
+**GST_DEBUG_DUMP_DOT_DIR.**
+
+Set this environment variable to a path to turn on all
+#GST_DEBUG_BIN_TO_DOT_FILE or
+#GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS calls and have the dot files
+in that location.
+
+This will only work if the application in question makes these calls in
+strategic places (like when the pipeline state changes or an error
+occurs). gst-launch-GST_API_VERSION is one such application.
+
+These .dot files can then be turned into images using the 'dot' utility
+from the graphviz set of tools, like this:
+`dot foo.dot -Tsvg -o foo.svg` or `dot foo.dot -Tpng -o foo.png` or
+`dot foo.dot -Tjpg -o foo.jpg`.
+
+There is also a utility called `xdot` which allows you to view the dot
+file directly without converting it first.
+
+**GST_REGISTRY, GST_REGISTRY_1_0.**
+
+Set this environment variable to make GStreamer use a different file for
+the plugin cache / registry than the default one. This is useful when
+operating in a separate environment which should not affect the default
+cache in the user's home directory.
+
+**GST_REGISTRY_FORK.**
+
+Set this environment variable to "no" to prevent GStreamer from forking
+on startup in order to update the plugin registry. This is useful for
+debugging purposes, but should not be used under normal circumstances,
+since it means that plugins may be loaded into memory even if they are
+not needed by the application.
+
+**GST_REGISTRY_UPDATE.**
+
+Set this environment variable to "no" to prevent GStreamer from updating
+the plugin registry. This is useful for embedded device which is not
+updating the plugins frequently, it will save time when doing
+gst_init().
+
+**GST_TRACE.**
+
+Enable memory allocation tracing. Most GStreamer objects have support
+for tracing the number of unfreed objects and their memory pointers.
+
+The variable takes a comma-separated list of tracing options to enable.
+
+* live: Counts all live objects and dumps an overview of the number of
+    unfreed objects at program exit.
+
+* mem-live: Keep track of the unfreed memory pointers and dump an overview of
+    all unfreed memory at program exit. Together with a level 9 debug
+    log this can be used to follow the lifecycle of leaked objects in
+    order to track down where they are leaked. This can be useful for
+    debugging memory leaks in situations where tools such as valgrind
+    are not available, or not an option.
+
+Use `all` to enable all tracing flags.
+
+**GST_DEBUG_FILE.**
+
+Set this variable to a file path to redirect all GStreamer debug
+messages to this file. If left unset, debug messages with be output unto
+the standard error.
+
+**ORC_CODE.**
+
+Useful Orc environment variable. Set ORC_CODE=debug to enable debuggers
+such as gdb to create useful backtraces from Orc-generated code. Set
+ORC_CODE=backup or ORC_CODE=emulate if you suspect Orc's SIMD code
+generator is producing incorrect code (Quite a few important GStreamer
+plugins like videotestsrc, audioconvert or audioresample use Orc). One
+can also combine flags like ORC_CODE=backup,debug.
+
+**G_DEBUG.**
+
+Useful GLib environment variable. Set G_DEBUG=fatal_warnings to make
+GStreamer programs abort when a critical warning such as an assertion
+failure occurs. This is useful if you want to find out which part of the
+code caused that warning to be triggered and under what circumstances.
+Simply set G_DEBUG as mentioned above and run the program in gdb (or
+let it core dump). Then get a stack trace in the usual way.
+
+**G_SLICE.**
+
+Useful GLib environment variable. Set G_SLICE=always-malloc when
+running GStreamer programs in valgrind, or debugging memory leaks with
+other tools. See the GLib API reference for more details.
+
+**GST_TAG_ENCODING.**
+
+Try this character encoding first for tag-related strings where the
+encoding is not defined and which are not UTF-8 already. By default the
+current locale will be tried (if not UTF-8).
+
+**GST_TAG_ID3_ENCODING.**
+
+Try this character encoding first for ID3 tag-related strings where the
+encoding is not defined and which are not UTF-8 already. By default the
+current locale will be tried (if not UTF-8).
+
+**GST_TAG_ID3V1_ENCODING.**
+
+Try this character encoding first for ID3v1 tag-related strings where
+the encoding does not look like UTF-8.
+
+**GST_GL_WINDOW.**
+
+Influences the window system to use by the GStreamer OpenGL library.
+Common values are 'x11', 'wayland', 'win32' or 'cocoa'.
+
+**GST_GL_PLATFORM.**
+
+Influences the OpenGL platform to use by the GStreamer OpenGL library.
+Common values are 'egl', 'glx', 'wgl' or 'cgl'.
+
+**GST_GL_API.**
+
+Influences the OpenGL API requested by the OpenGL platform. Common
+values are 'opengl' or 'gles2'.
--- a/docs/libs/base/index.md
+++ b/docs/libs/base/index.md
@ -0,0 +1,3 @@
+# Base and Utility classes
+
+`gstreamer-base` provides some base classes to be extended by elements and utility classes that are most useful for plugin developers.
--- a/docs/libs/base/sitemap.txt
+++ b/docs/libs/base/sitemap.txt
@ -0,0 +1,4 @@
+gi-index
+        gstbitreader.h
+        gstbytereader.h
+        gstbytewriter.h
--- a/docs/libs/check/index.md
+++ b/docs/libs/check/index.md
@ -0,0 +1,3 @@
+# Check Unit Testing
+
+`gstreamer-check` provides functionality for writing unit tests that use the check framework.
--- a/docs/libs/check/sitemap.txt
+++ b/docs/libs/check/sitemap.txt
@ -0,0 +1,2 @@
+gi-index
+	gstcheck.h
--- a/docs/libs/controller/index.md
+++ b/docs/libs/controller/index.md
@ -0,0 +1,3 @@
+# Dynamic Parameter Control
+
+`gstreamer-controller` provides functionality to animate element properties over time.
--- a/docs/libs/controller/sitemap.txt
+++ b/docs/libs/controller/sitemap.txt
@ -0,0 +1 @@
+gi-index
--- a/docs/libs/index.md
+++ b/docs/libs/index.md
@ -0,0 +1 @@
+# GStreamer core libraries API
--- a/docs/libs/net/index.md
+++ b/docs/libs/net/index.md
@ -0,0 +1,3 @@
+# Network Classes
+
+`gstreamer-net-1.0` provides network elements and objects.
--- a/docs/libs/net/sitemap.txt
+++ b/docs/libs/net/sitemap.txt
@ -0,0 +1 @@
+gi-index
--- a/docs/meson.build
+++ b/docs/meson.build
@ -0,0 +1,144 @@
+build_hotdoc = false
+if meson.is_cross_build()
+    if get_option('doc').enabled()
+        error('Documentation enabled but building the doc while cross building is not supported yet.')
+    endif
+
+    message('Documentation not built as building it while cross building is not supported yet.')
+    subdir_done()
+endif
+
+hotdoc_plugin_scanner = executable('gst-hotdoc-plugins-scanner',
+  'gst-hotdoc-plugins-scanner.c',
+  c_args : gst_c_args,
+  include_directories : [configinc],
+  dependencies : [gobject_dep, gmodule_dep, glib_dep, gst_dep],
+  install_dir : helpers_install_dir,
+  link_with: [printf_lib],
+  install: true,
+)
+
+configure_file(
+    input: 'gst-plugins-doc-cache-generator.py',
+    output: 'gst-plugins-doc-cache-generator',
+    copy: true,
+    install_dir : helpers_install_dir,
+)
+
+plugins_cache_generator = find_program(join_paths(meson.current_build_dir(), 'gst-plugins-doc-cache-generator'))
+plugins_cache = join_paths(meson.current_source_dir(), 'plugins', 'gst_plugins_cache.json')
+plugins_doc_dep = custom_target('build-doc-cache',
+    build_by_default: true,
+    command: [plugins_cache_generator, plugins_cache, '@OUTPUT@', '@INPUT@'],
+    input: plugins,
+    output: 'gst_plugins_cache.json',
+    depends: [hotdoc_plugin_scanner],
+)
+
+hotdoc_p = find_program('hotdoc', required: get_option('doc'))
+if not hotdoc_p.found()
+    message('Hotdoc not found, not building the documentation')
+    subdir_done()
+endif
+
+hotdoc = import('hotdoc')
+required_hotdoc_extensions = ['gi-extension', 'gst-extension']
+foreach extension: required_hotdoc_extensions
+    if not hotdoc.has_extensions(extension)
+        if get_option('doc').enabled()
+            error('Documentation enabled but @0@ missing'.format(extension))
+        endif
+
+        message('@0@ extension not found, not building documentation'.format(extension))
+        subdir_done()
+    endif
+endforeach
+
+
+if not build_gir
+    if get_option('doc').enabled()
+        error('Documentation enabled but introspection not built.')
+    endif
+
+    message('Introspection not built, can\'t build the documentation')
+    subdir_done()
+endif
+
+all_plugins_paths = []
+foreach l: plugins
+    all_plugins_paths += l.full_path()
+endforeach
+
+build_hotdoc = true
+docconf = configuration_data()
+docconf.set('GST_API_VERSION', apiversion)
+
+version_entities = configure_file(input : 'version.in',
+    output : 'gst_api_version.md',
+    configuration : docconf)
+
+gst_excludes = []
+foreach h: ['gettext.h', 'glib-compat-private.h', 'glib-compat.h',
+            'gst-i18n-app.h', 'gst-i18n-lib.h', 'gst_private.h',
+            'gstelementdetails.h', 'gstmacros.h', 'gstmarshal.h',
+            'math-compat.h', 'parse/grammar.tab.h',
+            '../libs/gst/base/gstindex.h',
+            '../libs/gst/base/gstindex.c',
+            'parser/grammar.tab.pre.h', 'parse/parse_lex.h', 'types.h',
+            'gst-printf.h', 'printf-args.h', 'printf-extension.h',
+            'printf-parse.h', 'vasnprintf.h', 'gstregistrybinary.c',
+            'gstregistrybinary.h', 'gstpluginloader.h', 'gstpluginloader.c']
+    gst_excludes += [join_paths(meson.current_source_dir(), '..', 'gst', h)]
+endforeach
+
+libs_doc = [hotdoc.generate_doc('gstreamer',
+    project_version: apiversion,
+    gi_c_sources: '../gst/*.[hc]',
+    gi_sources: [gst_gir[0].full_path()],
+    gi_c_source_filters: gst_excludes,
+    sitemap: 'gst/sitemap.txt',
+    index: 'gst/index.md',
+    gi_index: 'gst/gi-index.md',
+    gi_smart_index: true,
+    gi_c_source_roots: [join_paths(meson.current_source_dir(), '../gst/'), ],
+    dependencies: [gst_dep, glib_dep, gobject_dep, gmodule_dep, hotdoc_plugin_scanner],
+    extra_assets: [join_paths(meson.current_source_dir(), 'images')],
+)]
+
+libs = [
+  ['base', gst_base_gir, gst_base_dep],
+  ['controller', gst_controller_gir, gst_controller_dep,],
+  ['net', gst_net_gir, gst_net_dep],
+  ['check', gst_check_gir, gst_check_dep],
+]
+
+foreach lib: libs
+  name = lib[0]
+  gir = lib[1]
+  deps = [lib[2], gir]
+  libs_doc += [hotdoc.generate_doc('gstreamer-' + name,
+      project_version: apiversion,
+      gi_c_sources: ['../libs/gst/' + name + '/*.[hc]'],
+      gi_c_source_filters: gst_excludes,
+      gi_sources: gir[0].full_path(),
+      gi_c_source_roots: [join_paths(meson.current_source_dir(), '../libs/gst/' + name), ],
+      sitemap: join_paths('libs', name, 'sitemap.txt'),
+      index: join_paths('libs/', name, 'index.md'),
+      gi_index: join_paths('libs/', name, 'index.md'),
+      gi_smart_index: true,
+      gi_order_generated_subpages: true,
+      dependencies: deps + [hotdoc_plugin_scanner],
+      install: false,
+  )]
+endforeach
+
+plugins_doc = [hotdoc.generate_doc('GStreamer-core-plugins',
+    project_version: apiversion,
+    sitemap: 'plugins/sitemap.txt',
+    index: 'plugins/index.md',
+    gst_index: 'plugins/index.md',
+    gst_smart_index: true,
+    gst_c_sources: ['../plugins/elements/*.c', '../plugins/elements/*.h'],
+    dependencies: [plugins_doc_dep],
+    gst_cache_file: plugins_cache,
+)]
--- a/docs/plugins/Makefile.am
+++ b/docs/plugins/Makefile.am
@ -1,95 +0,0 @@
-GST_DOC_SCANOBJ = $(top_srcdir)/common/gstdoc-scangobj
-
-## Process this file with automake to produce Makefile.in
-
-# The name of the module, e.g. 'glib'.
-#DOC_MODULE=gst-plugins-libs-@GST_API_VERSION@
-MODULE=gstreamer
-DOC_MODULE=$(MODULE)-plugins
-
-# for upload-doc.mak
-DOC=$(MODULE)-plugins
-FORMATS=html
-html: html-build.stamp
-include $(top_srcdir)/common/upload-doc.mak
-
-# Extra environment needed for Core only...
-INSPECT_EXTRA_ENVIRONMENT= \
-    GST_PLUGIN_SCANNER_1_0=$(top_builddir)/libs/gst/helpers/gst-plugin-scanner
-
-# The top-level SGML file. Change it if you want.
-DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.sgml
-
-# The directory containing the source code.
-# gtk-doc will search all .c & .h files beneath here for inline comments
-# documenting functions and macros.
-DOC_SOURCE_DIR = $(top_srcdir)/plugins/elements $(top_srcdir)/plugins/tracers
-
-# Extra options to supply to gtkdoc-scan.
-SCAN_OPTIONS=
-
-# Extra options to supply to gtkdoc-mkdb.
-MKDB_OPTIONS=--sgml-mode
-
-# Extra options to supply to gtkdoc-fixref.
-FIXXREF_OPTIONS=--extra-dir=$(top_builddir)/docs/gst/html \
-	--extra-dir=$(top_builddir)/docs/libs/html \
-	--extra-dir=$(GLIB_PREFIX)/share/gtk-doc/html \
-	--extra-dir=$(datadir)/gtk-doc/html
-
-# Used for dependencies.
-HFILE_GLOB=$(top_srcdir)/plugins/elements/*.h $(top_srcdir)/plugins/tracers/*.h
-CFILE_GLOB=$(top_srcdir)/plugins/elements/*.c $(top_srcdir)/plugins/tracers/*.c
-
-# Header files to ignore when scanning.
-IGNORE_HFILES =
-IGNORE_CFILES =
-
-# we add all .h files of elements that have signals/args we want
-# sadly this also pulls in the private methods - maybe we should
-# move those around in the source ?
-# also, we should add some stuff here conditionally based on whether
-# or not the plugin will actually build
-# but I'm not sure about that - it might be this Just Works given that
-# the registry won't have the element
-
-EXTRA_HFILES = \
-	$(top_srcdir)/plugins/elements/gstcapsfilter.h \
-	$(top_srcdir)/plugins/elements/gstdataurisrc.h \
-	$(top_srcdir)/plugins/elements/gstdownloadbuffer.h \
-	$(top_srcdir)/plugins/elements/gstfakesrc.h \
-	$(top_srcdir)/plugins/elements/gstfakesink.h \
-	$(top_srcdir)/plugins/elements/gstfdsink.h \
-	$(top_srcdir)/plugins/elements/gstfdsrc.h \
-	$(top_srcdir)/plugins/elements/gstfilesrc.h \
-	$(top_srcdir)/plugins/elements/gstfilesink.h \
-	$(top_srcdir)/plugins/elements/gstidentity.h \
-	$(top_srcdir)/plugins/elements/gstinputselector.h \
-	$(top_srcdir)/plugins/elements/gstmultiqueue.h \
-	$(top_srcdir)/plugins/elements/gstoutputselector.h \
-	$(top_srcdir)/plugins/elements/gstqueue.h \
-	$(top_srcdir)/plugins/elements/gstqueue2.h \
-	$(top_srcdir)/plugins/elements/gsttypefindelement.h \
-	$(top_srcdir)/plugins/elements/gsttee.h \
-	$(top_srcdir)/plugins/elements/gstvalve.h
-
-# Images to copy into HTML directory.
-HTML_IMAGES =
-
-# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
-content_files =
-
-# Other files to distribute.
-extra_files =
-
-# CFLAGS and LDFLAGS for compiling scan program. Only needed if your app/lib
-# contains GtkObjects/GObjects and you want to document signals and properties.
-GTKDOC_CFLAGS = $(GST_OBJ_CFLAGS) -I$(top_builddir) -I$(top_builddir)/libs
-GTKDOC_LIBS = $(GST_OBJ_LIBS)
-
-# If you need to override some of the declarations, place them in this file
-# and uncomment this line.
-#DOC_OVERRIDES = $(DOC_MODULE)-overrides.txt
-DOC_OVERRIDES =
-
-include $(top_srcdir)/common/gtk-doc-plugins.mak
--- a/docs/plugins/gst_plugins_cache.json
+++ b/docs/plugins/gst_plugins_cache.json
--- a/docs/plugins/gstreamer-plugins-docs.sgml
+++ b/docs/plugins/gstreamer-plugins-docs.sgml
@ -1,58 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
-               "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
-<!ENTITY % version-entities SYSTEM "version.entities">
-%version-entities;
-]>
-
-<book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
-  <bookinfo>
-    <title>GStreamer Core Plugins &GST_API_VERSION; Plugins Reference Manual</title>
-    <releaseinfo>
-      for GStreamer Core Plugins &GST_API_VERSION; (&GST_VERSION;)
-      The latest version of this documentation can be found on-line at
-      <ulink role="online-location" url="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/</ulink>.
-    </releaseinfo>
-  </bookinfo>
-
-  <chapter>
-    <title>gstreamer Elements</title>
-    <xi:include href="xml/element-capsfilter.xml" />
-    <xi:include href="xml/element-concat.xml" />
-    <xi:include href="xml/element-dataurisrc.xml" />
-    <xi:include href="xml/element-downloadbuffer.xml" />
-    <xi:include href="xml/element-fakesink.xml" />
-    <xi:include href="xml/element-fakesrc.xml" />
-    <xi:include href="xml/element-fdsink.xml" />
-    <xi:include href="xml/element-fdsrc.xml" />
-    <xi:include href="xml/element-filesink.xml" />
-    <xi:include href="xml/element-filesrc.xml" />
-    <xi:include href="xml/element-funnel.xml" />
-    <xi:include href="xml/element-identity.xml" />
-    <xi:include href="xml/element-input-selector.xml" />
-    <xi:include href="xml/element-multiqueue.xml" />
-    <xi:include href="xml/element-output-selector.xml" />
-    <xi:include href="xml/element-queue2.xml" />
-    <xi:include href="xml/element-queue.xml" />
-    <xi:include href="xml/element-streamiddemux.xml" />
-    <xi:include href="xml/element-tee.xml" />
-    <xi:include href="xml/element-typefind.xml" />
-    <xi:include href="xml/element-valve.xml" />
-  </chapter>
-
-  <chapter>
-    <title>gstreamer Tracers</title>
-    <xi:include href="xml/element-latencytracer.xml" />
-    <xi:include href="xml/element-leakstracer.xml" />
-    <xi:include href="xml/element-logtracer.xml" />
-    <xi:include href="xml/element-rusagetracer.xml" />
-    <xi:include href="xml/element-statstracer.xml" />
-  </chapter>
-
-  <chapter>
-    <title>gstreamer Plugins</title>
-    <xi:include href="xml/plugin-coreelements.xml" />
-    <xi:include href="xml/plugin-coretracers.xml" />
-  </chapter>
-</book>
-
--- a/docs/plugins/gstreamer-plugins-sections.txt
+++ b/docs/plugins/gstreamer-plugins-sections.txt
@ -1,430 +0,0 @@
-<SECTION>
-<FILE>element-capsfilter</FILE>
-<TITLE>capsfilter</TITLE>
-GstCapsFilter
-GstCapsFilterCapsChangeMode
-<SUBSECTION Standard>
-GstCapsFilterClass
-GST_CAPS_FILTER
-GST_CAPS_FILTER_CAST
-GST_IS_CAPS_FILTER
-GST_CAPS_FILTER_CLASS
-GST_IS_CAPS_FILTER_CLASS
-GST_TYPE_CAPS_FILTER
-<SUBSECTION Private>
-gst_caps_filter_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-concat</FILE>
-<TITLE>concat</TITLE>
-GstConcat
-<SUBSECTION Standard>
-GstConcatClass
-GST_CONCAT
-GST_CONCAT_CAST
-GST_IS_CONCAT
-GST_CONCAT_CLASS
-GST_IS_CONCAT_CLASS
-GST_TYPE_CONCAT
-<SUBSECTION Private>
-gst_concat_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-dataurisrc</FILE>
-<TITLE>dataurisrc</TITLE>
-GstDataURISrc
-<SUBSECTION Standard>
-GstDataURISrcClass
-GST_DATA_URI_SRC
-GST_DATA_URI_SRC_CAST
-GST_IS_DATA_URI_SRC
-GST_DATA_URI_SRC_CLASS
-GST_IS_DATA_URI_SRC_CLASS
-GST_TYPE_DATA_URI_SRC
-<SUBSECTION Private>
-gst_data_uri_src_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-downloadbuffer</FILE>
-<TITLE>downloadbuffer</TITLE>
-GstDownloadBuffer
-<SUBSECTION Standard>
-GstDownloadBufferSize
-GstDownloadBufferClass
-GST_DOWNLOAD_BUFFER
-GST_DOWNLOAD_BUFFER_CAST
-GST_IS_DOWNLOAD_BUFFER
-GST_DOWNLOAD_BUFFER_CLASS
-GST_IS_DOWNLOAD_BUFFER_CLASS
-GST_TYPE_DOWNLOAD_BUFFER
-<SUBSECTION Private>
-gst_download_buffer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-fakesink</FILE>
-<TITLE>fakesink</TITLE>
-GstFakeSink
-GstFakeSinkStateError
-<SUBSECTION Standard>
-GstFakeSinkClass
-GST_FAKE_SINK
-GST_FAKE_SINK_CAST
-GST_IS_FAKE_SINK
-GST_FAKE_SINK_CLASS
-GST_IS_FAKE_SINK_CLASS
-GST_TYPE_FAKE_SINK
-<SUBSECTION Private>
-gst_fake_sink_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-fakesrc</FILE>
-<TITLE>fakesrc</TITLE>
-GstFakeSrc
-GstFakeSrcDataType
-GstFakeSrcFillType
-GstFakeSrcOutputType
-GstFakeSrcSizeType
-<SUBSECTION Standard>
-GstFakeSrcClass
-GST_FAKE_SRC
-GST_IS_FAKE_SRC
-GST_FAKE_SRC_CLASS
-GST_IS_FAKE_SRC_CLASS
-GST_TYPE_FAKE_SRC
-<SUBSECTION Private>
-gst_fake_src_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-fdsink</FILE>
-<TITLE>fdsink</TITLE>
-GstFdSink
-<SUBSECTION Standard>
-GstFdSinkClass
-GST_FD_SINK
-GST_FD_SINK_CAST
-GST_IS_FD_SINK
-GST_FD_SINK_CLASS
-GST_IS_FD_SINK_CLASS
-GST_TYPE_FD_SINK
-<SUBSECTION Private>
-gst_fd_sink_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-fdsrc</FILE>
-<TITLE>fdsrc</TITLE>
-GstFdSrc
-<SUBSECTION Standard>
-GstFdSrcClass
-GST_FD_SRC
-GST_IS_FD_SRC
-GST_FD_SRC_CLASS
-GST_IS_FD_SRC_CLASS
-GST_TYPE_FD_SRC
-<SUBSECTION Private>
-gst_fd_src_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-filesink</FILE>
-<TITLE>filesink</TITLE>
-GstFileSink
-GstFileSinkBufferMode
-<SUBSECTION Standard>
-GstFileSinkClass
-GST_FILE_SINK
-GST_FILE_SINK_CAST
-GST_IS_FILE_SINK
-GST_FILE_SINK_CLASS
-GST_IS_FILE_SINK_CLASS
-GST_TYPE_FILE_SINK
-GST_TYPE_FILE_SINK_BUFFER_MODE
-<SUBSECTION Private>
-gst_file_sink_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-filesrc</FILE>
-<TITLE>filesrc</TITLE>
-GstFileSrc
-<SUBSECTION Standard>
-GstFileSrcClass
-GST_FILE_SRC
-GST_FILE_SRC_CAST
-GST_IS_FILE_SRC
-GST_FILE_SRC_CLASS
-GST_IS_FILE_SRC_CLASS
-GST_TYPE_FILE_SRC
-<SUBSECTION Private>
-gst_file_src_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-funnel</FILE>
-<TITLE>funnel</TITLE>
-GstFunnel
-<SUBSECTION Standard>
-GstFunnelClass
-GST_FUNNEL
-GST_IS_FUNNEL
-GST_FUNNEL_CLASS
-GST_IS_FUNNEL_CLASS
-GST_TYPE_FUNNEL
-<SUBSECTION Private>
-gst_funnel_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-identity</FILE>
-<TITLE>identity</TITLE>
-GstIdentity
-<SUBSECTION Standard>
-GstIdentityClass
-GST_IDENTITY
-GST_IS_IDENTITY
-GST_IDENTITY_CLASS
-GST_IS_IDENTITY_CLASS
-GST_TYPE_IDENTITY
-<SUBSECTION Private>
-gst_identity_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-input-selector</FILE>
-<TITLE>input-selector</TITLE>
-GstInputSelector
-GstInputSelectorSyncMode
-<SUBSECTION Standard>
-GstInputSelectorClass
-GST_INPUT_SELECTOR
-GST_IS_INPUT_SELECTOR
-GST_INPUT_SELECTOR_CLASS
-GST_IS_INPUT_SELECTOR_CLASS
-GST_TYPE_INPUT_SELECTOR
-GST_INPUT_SELECTOR_BROADCAST
-GST_INPUT_SELECTOR_GET_COND
-GST_INPUT_SELECTOR_GET_LOCK
-GST_INPUT_SELECTOR_LOCK
-GST_INPUT_SELECTOR_UNLOCK
-GST_INPUT_SELECTOR_WAIT
-<SUBSECTION Private>
-gst_input_selector_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-latencytracer</FILE>
-<TITLE>latencytracer</TITLE>
-GstLatencyTracer
-<SUBSECTION Standard>
-GstLatencyTracerClass
-GST_LATENCY_TRACER
-GST_LATENCY_TRACER_CAST
-GST_IS_LATENCY_TRACER
-GST_LATENCY_TRACER_CLASS
-GST_IS_LATENCY_TRACER_CLASS
-GST_TYPE_LATENCY_TRACER
-<SUBSECTION Private>
-gst_latency_tracer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-leakstracer</FILE>
-<TITLE>leakstracer</TITLE>
-GstLeaksTracer
-<SUBSECTION Standard>
-GstLeaksTracerClass
-GST_LEAKS_TRACER
-GST_LEAKS_TRACER_CAST
-GST_IS_LEAKS_TRACER
-GST_LEAKS_TRACER_CLASS
-GST_IS_LEAKS_TRACER_CLASS
-GST_TYPE_LEAKS_TRACER
-<SUBSECTION Private>
-gst_leaks_tracer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-logtracer</FILE>
-<TITLE>logtracer</TITLE>
-GstLogTracer
-<SUBSECTION Standard>
-GstLogTracerClass
-GST_LOG_TRACER
-GST_LOG_TRACER_CAST
-GST_IS_LOG_TRACER
-GST_LOG_TRACER_CLASS
-GST_IS_LOG_TRACER_CLASS
-GST_TYPE_LOG_TRACER
-<SUBSECTION Private>
-gst_log_tracer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-multiqueue</FILE>
-<TITLE>multiqueue</TITLE>
-GstMultiQueue
-<SUBSECTION Standard>
-GstMultiQueueClass
-GST_MULTI_QUEUE
-GST_IS_MULTI_QUEUE
-GST_MULTI_QUEUE_CLASS
-GST_IS_MULTI_QUEUE_CLASS
-GST_TYPE_MULTI_QUEUE
-<SUBSECTION Private>
-gst_multi_queue_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-output-selector</FILE>
-<TITLE>output-selector</TITLE>
-GstOutputSelector
-GstOutputSelectorPadNegotiationMode
-<SUBSECTION Standard>
-GstOutputSelectorClass
-GST_OUTPUT_SELECTOR
-GST_IS_OUTPUT_SELECTOR
-GST_OUTPUT_SELECTOR_CLASS
-GST_IS_OUTPUT_SELECTOR_CLASS
-GST_TYPE_OUTPUT_SELECTOR
-<SUBSECTION Private>
-gst_output_selector_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-queue</FILE>
-<TITLE>queue</TITLE>
-GstQueue
-GstQueueLeaky
-<SUBSECTION Standard>
-GstQueueClass
-GST_QUEUE
-GST_QUEUE_CAST
-GST_IS_QUEUE
-GST_QUEUE_CLASS
-GST_IS_QUEUE_CLASS
-GST_TYPE_QUEUE
-<SUBSECTION Private>
-GstQueueSize
-gst_queue_get_type
-GST_QUEUE_CLEAR_LEVEL
-</SECTION>
-
-<SECTION>
-<FILE>element-queue2</FILE>
-<TITLE>queue2</TITLE>
-GstQueue2
-<SUBSECTION Standard>
-GstQueue2Class
-GST_QUEUE2
-GST_QUEUE2_CAST
-GST_IS_QUEUE2
-GST_QUEUE2_CLASS
-GST_IS_QUEUE2_CLASS
-GST_TYPE_QUEUE2
-<SUBSECTION Private>
-GstQueue2Size
-GstQueue2Range
-gst_queue2_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-rusagetracer</FILE>
-<TITLE>rusagetracer</TITLE>
-GstRUsageTracer
-<SUBSECTION Standard>
-GstRUsageTracerClass
-GST_RUSAGE_TRACER
-GST_RUSAGE_TRACER_CAST
-GST_IS_RUSAGE_TRACER
-GST_RUSAGE_TRACER_CLASS
-GST_IS_RUSAGE_TRACER_CLASS
-GST_TYPE_RUSAGE_TRACER
-<SUBSECTION Private>
-gst_rusage_tracer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-statstracer</FILE>
-<TITLE>statstracer</TITLE>
-GstStatsTracer
-<SUBSECTION Standard>
-GstStatsTracerClass
-GST_STATS_TRACER
-GST_STATS_TRACER_CAST
-GST_IS_STATS_TRACER
-GST_STATS_TRACER_CLASS
-GST_IS_STATS_TRACER_CLASS
-GST_TYPE_STATS_TRACER
-<SUBSECTION Private>
-gst_stats_tracer_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-streamiddemux</FILE>
-<TITLE>streamiddemux</TITLE>
-GstStreamidDemux
-<SUBSECTION Standard>
-GstStreamidDemuxClass
-GST_STREAMID_DEMUX
-GST_STREAMID_DEMUX_CAST
-GST_IS_STREAMID_DEMUX
-GST_STREAMID_DEMUX_CLASS
-GST_IS_STREAMID_DEMUX_CLASS
-GST_TYPE_STREAMID_DEMUX
-<SUBSECTION Private>
-gst_streamid_demux_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-tee</FILE>
-<TITLE>tee</TITLE>
-GstTee
-GstTeePullMode
-<SUBSECTION Standard>
-GstTeeClass
-GST_TEE
-GST_TEE_CAST
-GST_IS_TEE
-GST_TEE_CLASS
-GST_IS_TEE_CLASS
-GST_TYPE_TEE
-<SUBSECTION Private>
-gst_tee_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-typefind</FILE>
-<TITLE>typefind</TITLE>
-GstTypeFindElement
-<SUBSECTION Standard>
-GstTypeFindElementClass
-GST_TYPE_FIND_ELEMENT
-GST_IS_TYPE_FIND_ELEMENT
-GST_TYPE_FIND_ELEMENT_CLASS
-GST_IS_TYPE_FIND_ELEMENT_CLASS
-GST_TYPE_TYPE_FIND_ELEMENT
-<SUBSECTION Private>
-gst_type_find_element_get_type
-</SECTION>
-
-<SECTION>
-<FILE>element-valve</FILE>
-<TITLE>valve</TITLE>
-GstValve
-<SUBSECTION Standard>
-GstValveClass
-GST_VALVE
-GST_IS_VALVE
-GST_VALVE_CLASS
-GST_IS_VALVE_CLASS
-GST_TYPE_VALVE
-<SUBSECTION Private>
-gst_valve_get_type
-</SECTION>
-
--- a/docs/plugins/gstreamer-plugins.args
+++ b/docs/plugins/gstreamer-plugins.args
--- a/docs/plugins/gstreamer-plugins.hierarchy
+++ b/docs/plugins/gstreamer-plugins.hierarchy
@ -1,62 +0,0 @@
-GObject
-  GInitiallyUnowned
-    GstObject
-      GstAllocator
-        GstAllocatorSysmem
-      GstBus
-      GstClock
-      GstControlBinding
-      GstControlSource
-      GstElement
-        GstBaseSink
-          GstFakeSink
-          GstFdSink
-          GstFileSink
-        GstBaseSrc
-          GstDataURISrc
-          GstFakeSrc
-          GstFileSrc
-          GstPushSrc
-            GstFdSrc
-        GstBaseTransform
-          GstCapsFilter
-          GstIdentity
-        GstBin
-          GstPipeline
-        GstConcat
-        GstDownloadBuffer
-        GstFunnel
-        GstInputSelector
-        GstMultiQueue
-        GstOutputSelector
-        GstQueue
-        GstQueue2
-        GstStreamidDemux
-        GstTee
-        GstTypeFindElement
-        GstValve
-      GstPad
-        GstMultiQueuePad
-        GstSelectorPad
-      GstPadTemplate
-      GstPlugin
-      GstPluginFeature
-        GstDeviceProviderFactory
-        GstDynamicTypeFactory
-        GstElementFactory
-        GstTracerFactory
-        GstTypeFindFactory
-      GstRegistry
-      GstTask
-      GstTaskPool
-      GstTracer
-        GstLatencyTracer
-        GstLeaksTracer
-        GstLogTracer
-        GstRUsageTracer
-        GstStatsTracer
-      GstTracerRecord
-GInterface
-  GTypePlugin
-  GstChildProxy
-  GstURIHandler
--- a/docs/plugins/gstreamer-plugins.interfaces
+++ b/docs/plugins/gstreamer-plugins.interfaces
@ -1,7 +0,0 @@
-GstBin GstChildProxy
-GstDataURISrc GstURIHandler
-GstFdSink GstURIHandler
-GstFdSrc GstURIHandler
-GstFileSink GstURIHandler
-GstFileSrc GstURIHandler
-GstPipeline GstChildProxy
--- a/docs/plugins/gstreamer-plugins.prerequisites
+++ b/docs/plugins/gstreamer-plugins.prerequisites
@ -1 +0,0 @@
-GstChildProxy GObject
--- a/docs/plugins/gstreamer-plugins.signals
+++ b/docs/plugins/gstreamer-plugins.signals
@ -1,93 +0,0 @@
-<SIGNAL>
-<NAME>GstTypeFindElement::have-type</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>l</FLAGS>
-GstTypeFindElement *gsttypefindelement
-guint  arg1
-GstCaps *arg2
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstQueue::overrun</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstQueue *gstqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstQueue::pushing</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstQueue *gstqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstQueue::running</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstQueue *gstqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstQueue::underrun</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstQueue *gstqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstMultiQueue::overrun</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstMultiQueue *gstmultiqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstMultiQueue::underrun</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstMultiQueue *gstmultiqueue
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstIdentity::handoff</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>l</FLAGS>
-GstIdentity *gstidentity
-GstBuffer *arg1
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstFakeSrc::handoff</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>l</FLAGS>
-GstFakeSrc *gstfakesrc
-GstBuffer *arg1
-GstPad *arg2
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstFakeSink::handoff</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>l</FLAGS>
-GstFakeSink *gstfakesink
-GstBuffer *arg1
-GstPad *arg2
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstFakeSink::preroll-handoff</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>l</FLAGS>
-GstFakeSink *gstfakesink
-GstBuffer *arg1
-GstPad *arg2
-</SIGNAL>
-
-<SIGNAL>
-<NAME>GstQueue2::overrun</NAME>
-<RETURNS>void</RETURNS>
-<FLAGS>f</FLAGS>
-GstQueue2 *gstqueue2
-</SIGNAL>
-
--- a/docs/plugins/gstreamer-plugins.types
+++ b/docs/plugins/gstreamer-plugins.types
@ -1 +0,0 @@
-#include <gst/gst.h>
--- a/docs/plugins/index.md
+++ b/docs/plugins/index.md
@ -0,0 +1,5 @@
+---
+short-description: GStreamer plugin from GStreamer core
+...
+
+# Core Plugin
--- a/docs/plugins/inspect/plugin-coreelements.xml
+++ b/docs/plugins/inspect/plugin-coreelements.xml
@ -1,412 +0,0 @@
-<plugin>
-  <name>coreelements</name>
-  <description>GStreamer core elements</description>
-  <filename>../../plugins/elements/.libs/libgstcoreelements.so</filename>
-  <basename>libgstcoreelements.so</basename>
-  <version>1.17.0.1</version>
-  <license>LGPL</license>
-  <source>gstreamer</source>
-  <package>GStreamer git</package>
-  <origin>Unknown package origin</origin>
-  <elements>
-    <element>
-      <name>capsfilter</name>
-      <longname>CapsFilter</longname>
-      <class>Generic</class>
-      <description>Pass data without modification, limiting formats</description>
-      <author>David Schleef &lt;ds@schleef.org&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>concat</name>
-      <longname>Concat</longname>
-      <class>Generic</class>
-      <description>Concatenate multiple streams</description>
-      <author>Sebastian Dröge &lt;sebastian@centricular.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink_%u</name>
-          <direction>sink</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>dataurisrc</name>
-      <longname>data: URI source element</longname>
-      <class>Source</class>
-      <description>Handles data: uris</description>
-      <author>Philippe Normand &lt;pnormand@igalia.com&gt;, Sebastian Dröge &lt;sebastian.droege@collabora.co.uk&gt;</author>
-      <pads>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>downloadbuffer</name>
-      <longname>DownloadBuffer</longname>
-      <class>Generic</class>
-      <description>Download Buffer element</description>
-      <author>Wim Taymans &lt;wim.taymans@gmail.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>fakesink</name>
-      <longname>Fake Sink</longname>
-      <class>Sink</class>
-      <description>Black hole for data</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;, Wim Taymans &lt;wim@fluendo.com&gt;, Mr. &apos;frag-me-more&apos; Vanderwingo &lt;wingo@fluendo.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>fakesrc</name>
-      <longname>Fake Source</longname>
-      <class>Source</class>
-      <description>Push empty (no data) buffers around</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;, Wim Taymans &lt;wim@fluendo.com&gt;</author>
-      <pads>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>fdsink</name>
-      <longname>Filedescriptor Sink</longname>
-      <class>Sink/File</class>
-      <description>Write data to a file descriptor</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>fdsrc</name>
-      <longname>Filedescriptor Source</longname>
-      <class>Source/File</class>
-      <description>Read from a file descriptor</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;</author>
-      <pads>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>filesink</name>
-      <longname>File Sink</longname>
-      <class>Sink/File</class>
-      <description>Write stream to a file</description>
-      <author>Thomas Vander Stichele &lt;thomas at apestaart dot org&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>filesrc</name>
-      <longname>File Source</longname>
-      <class>Source/File</class>
-      <description>Read from arbitrary point in a file</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;</author>
-      <pads>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>funnel</name>
-      <longname>Funnel pipe fitting</longname>
-      <class>Generic</class>
-      <description>N-to-1 pipe fitting</description>
-      <author>Olivier Crete &lt;olivier.crete@collabora.co.uk&gt;</author>
-      <pads>
-        <caps>
-          <name>sink_%u</name>
-          <direction>sink</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>identity</name>
-      <longname>Identity</longname>
-      <class>Generic</class>
-      <description>Pass data without modification</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>input-selector</name>
-      <longname>Input selector</longname>
-      <class>Generic</class>
-      <description>N-to-1 input stream selector</description>
-      <author>Julien Moutte &lt;julien@moutte.net&gt;, Jan Schmidt &lt;thaytan@mad.scientist.com&gt;, Wim Taymans &lt;wim.taymans@gmail.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink_%u</name>
-          <direction>sink</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>multiqueue</name>
-      <longname>MultiQueue</longname>
-      <class>Generic</class>
-      <description>Multiple data queue</description>
-      <author>Edward Hervey &lt;edward@fluendo.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink_%u</name>
-          <direction>sink</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src_%u</name>
-          <direction>source</direction>
-          <presence>sometimes</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>output-selector</name>
-      <longname>Output selector</longname>
-      <class>Generic</class>
-      <description>1-to-N output stream selector</description>
-      <author>Stefan Kost &lt;stefan.kost@nokia.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src_%u</name>
-          <direction>source</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>queue</name>
-      <longname>Queue</longname>
-      <class>Generic</class>
-      <description>Simple data queue</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>queue2</name>
-      <longname>Queue 2</longname>
-      <class>Generic</class>
-      <description>Simple data queue</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;, Wim Taymans &lt;wim.taymans@gmail.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>streamiddemux</name>
-      <longname>Streamid Demux</longname>
-      <class>Generic</class>
-      <description>1-to-N output stream by stream-id</description>
-      <author>HoonHee Lee &lt;hoonhee.lee@lge.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src_%u</name>
-          <direction>source</direction>
-          <presence>sometimes</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>tee</name>
-      <longname>Tee pipe fitting</longname>
-      <class>Generic</class>
-      <description>1-to-N pipe fitting</description>
-      <author>Erik Walthinsen &lt;omega@cse.ogi.edu&gt;, Wim Taymans &lt;wim@fluendo.com&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src_%u</name>
-          <direction>source</direction>
-          <presence>request</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>typefind</name>
-      <longname>TypeFind</longname>
-      <class>Generic</class>
-      <description>Finds the media type of a stream</description>
-      <author>Benjamin Otte &lt;in7y118@public.uni-hamburg.de&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-    <element>
-      <name>valve</name>
-      <longname>Valve element</longname>
-      <class>Filter</class>
-      <description>Drops buffers and events or lets them through</description>
-      <author>Olivier Crete &lt;olivier.crete@collabora.co.uk&gt;</author>
-      <pads>
-        <caps>
-          <name>sink</name>
-          <direction>sink</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-        <caps>
-          <name>src</name>
-          <direction>source</direction>
-          <presence>always</presence>
-          <details>ANY</details>
-        </caps>
-      </pads>
-    </element>
-  </elements>
-</plugin>
--- a/docs/plugins/inspect/plugin-coretracers.xml
+++ b/docs/plugins/inspect/plugin-coretracers.xml
@ -1,28 +0,0 @@
-<plugin>
-  <name>coretracers</name>
-  <description>GStreamer core tracers</description>
-  <filename>../../plugins/tracers/.libs/libgstcoretracers.so</filename>
-  <basename>libgstcoretracers.so</basename>
-  <version>1.17.0.1</version>
-  <license>LGPL</license>
-  <source>gstreamer</source>
-  <package>GStreamer git</package>
-  <origin>Unknown package origin</origin>
-  <elements>
-    <tracer>
-      <name>latency</name>
-    </tracer>
-    <tracer>
-      <name>leaks</name>
-    </tracer>
-    <tracer>
-      <name>log</name>
-    </tracer>
-    <tracer>
-      <name>rusage</name>
-    </tracer>
-    <tracer>
-      <name>stats</name>
-    </tracer>
-  </elements>
-</plugin>
--- a/docs/plugins/sitemap.txt
+++ b/docs/plugins/sitemap.txt
@ -0,0 +1 @@
+gst-index
--- a/docs/version.in
+++ b/docs/version.in
@ -0,0 +1 @@
+@GST_API_VERSION@
--- a/gst/gstelement.c
+++ b/gst/gstelement.c
@ -25,6 +25,13 @@
 * @title: GstElement
 * @short_description: Abstract base class for all pipeline elements
 * @see_also: #GstElementFactory, #GstPad
+ * @symbols:
+ * - GST_ELEMENT_METADATA_LONGNAME
+ * - GST_ELEMENT_METADATA_KLASS
+ * - GST_ELEMENT_METADATA_DESCRIPTION
+ * - GST_ELEMENT_METADATA_AUTHOR
+ * - GST_ELEMENT_METADATA_DOC_URI
+ * - GST_ELEMENT_METADATA_ICON_NAME
 *
 * GstElement is the abstract base class needed to construct an element that
 * can be used in a GStreamer pipeline. Please refer to the plugin writers
--- a/gst/gsterror.c
+++ b/gst/gsterror.c
@ -22,6 +22,12 @@
 * @title: GstError
 * @short_description: Categorized error messages
 * @see_also: #GstMessage
+ * @symbols:
+ * - gst_error_get_message
+ * - gst_stream_error_quark
+ * - gst_core_error_quark
+ * - gst_resource_error_quark
+ * - gst_library_error_quark
 *
 * GStreamer elements can throw non-fatal warnings and fatal errors.
 * Higher-level elements and applications can programmatically filter
--- a/gst/gstmessage.c
+++ b/gst/gstmessage.c
@ -3050,8 +3050,8 @@ gst_message_parse_streams_selected (GstMessage * message,
 * such as bitrate statistics for the given location.
 *
 * By default, message recipients should treat entries in the order they are
- * stored. The recipient should therefore try entry #0 first, and if this
- * entry is not acceptable or working, try entry #1 etc. Senders must make
+ * stored. The recipient should therefore try entry \#0 first, and if this
+ * entry is not acceptable or working, try entry \#1 etc. Senders must make
 * sure that they add entries in this order. However, recipients are free to
 * ignore the order and pick an entry that is "best" for them. One example
 * would be a recipient that scans the entries for the one with the highest
--- a/gst/gstpoll.c
+++ b/gst/gstpoll.c
@ -28,7 +28,7 @@
 *                     to wait on them in a cancellable way
 *
 * A #GstPoll keeps track of file descriptors much like fd_set (used with
- * select()) or a struct pollfd array (used with poll()). Once created with
+ * select ()) or a struct pollfd array (used with poll ()). Once created with
 * gst_poll_new(), the set can be used to wait for file descriptors to be
 * readable and/or writable. It is possible to make this wait be controlled
 * by specifying %TRUE for the @controllable flag when creating the set (or
--- a/gst/meson.build
+++ b/gst/meson.build
@ -262,7 +262,7 @@ if build_gir
  endif

  gst_incdirs += [configinc]
-  gst_gen_sources += [gnome.generate_gir(libgst,
+  gst_gir = gnome.generate_gir(libgst,
    sources : gst_sources + gst_headers + gst_enums + [gst_version_h],
    namespace : 'Gst',
    nsversion : apiversion,
@ -272,7 +272,8 @@ if build_gir
    includes : ['GLib-2.0', 'GObject-2.0', 'GModule-2.0' ],
    install : true,
    extra_args : gst_gir_extra_args,
-  )]
+  )
+  gst_gen_sources += gst_gir
 endif

 gst_compile_args = []
--- a/libs/gst/base/gstbitreader.c
+++ b/libs/gst/base/gstbitreader.c
@ -31,6 +31,17 @@
 * SECTION:gstbitreader
 * @title: GstBitReader
 * @short_description: Reads any number of bits from a memory buffer
+ * @symbols:
+ * - gst_bit_reader_skip_unchecked
+ * - gst_bit_reader_skip_to_byte_unchecked
+ * - gst_bit_reader_get_bits_uint8_unchecked
+ * - gst_bit_reader_peek_bits_uint8_unchecked
+ * - gst_bit_reader_get_bits_uint16_unchecked
+ * - gst_bit_reader_peek_bits_uint16_unchecked
+ * - gst_bit_reader_get_bits_uint32_unchecked
+ * - gst_bit_reader_peek_bits_uint32_unchecked
+ * - gst_bit_reader_get_bits_uint64_unchecked
+ * - gst_bit_reader_peek_bits_uint64_unchecked
 *
 * #GstBitReader provides a bit reader that can read any number of bits
 * from a memory buffer. It provides functions for reading any number of bits
--- a/libs/gst/base/gstbytereader.c
+++ b/libs/gst/base/gstbytereader.c
@ -33,6 +33,47 @@
 * @title: GstByteReader
 * @short_description: Reads different integer, string and floating point
 *     types from a memory buffer
+ * @symbols:
+ * - gst_byte_reader_skip_unchecked
+ * - gst_byte_reader_get_uint8_unchecked
+ * - gst_byte_reader_peek_uint8_unchecked
+ * - gst_byte_reader_get_int8_unchecked
+ * - gst_byte_reader_peek_int8_unchecked
+ * - gst_byte_reader_get_uint16_le_unchecked
+ * - gst_byte_reader_get_uint16_be_unchecked
+ * - gst_byte_reader_peek_uint16_le_unchecked
+ * - gst_byte_reader_peek_uint16_be_unchecked
+ * - gst_byte_reader_get_int16_le_unchecked
+ * - gst_byte_reader_get_int16_be_unchecked
+ * - gst_byte_reader_peek_int16_le_unchecked
+ * - gst_byte_reader_peek_int16_be_unchecked
+ * - gst_byte_reader_get_uint24_le_unchecked
+ * - gst_byte_reader_get_uint24_be_unchecked
+ * - gst_byte_reader_peek_uint24_le_unchecked
+ * - gst_byte_reader_peek_uint24_be_unchecked
+ * - gst_byte_reader_get_int24_le_unchecked
+ * - gst_byte_reader_get_int24_be_unchecked
+ * - gst_byte_reader_peek_int24_le_unchecked
+ * - gst_byte_reader_peek_int24_be_unchecked
+ * - gst_byte_reader_get_uint32_le_unchecked
+ * - gst_byte_reader_get_uint32_be_unchecked
+ * - gst_byte_reader_peek_uint32_le_unchecked
+ * - gst_byte_reader_peek_uint32_be_unchecked
+ * - gst_byte_reader_get_int32_le_unchecked
+ * - gst_byte_reader_get_int32_be_unchecked
+ * - gst_byte_reader_peek_int32_le_unchecked
+ * - gst_byte_reader_peek_int32_be_unchecked
+ * - gst_byte_reader_get_float32_le_unchecked
+ * - gst_byte_reader_get_float32_be_unchecked
+ * - gst_byte_reader_get_float64_le_unchecked
+ * - gst_byte_reader_get_float64_be_unchecked
+ * - gst_byte_reader_peek_float32_le_unchecked
+ * - gst_byte_reader_peek_float32_be_unchecked
+ * - gst_byte_reader_peek_float64_le_unchecked
+ * - gst_byte_reader_peek_float64_be_unchecked
+ * - gst_byte_reader_peek_data_unchecked
+ * - gst_byte_reader_get_data_unchecked
+ * - gst_byte_reader_dup_data_unchecked
 *
 * #GstByteReader provides a byte reader that can read different integer and
 * floating point types from a memory buffer. It provides functions for reading
--- a/libs/gst/base/gstbytewriter.c
+++ b/libs/gst/base/gstbytewriter.c
@ -30,6 +30,31 @@
 * @title: GstByteWriter
 * @short_description: Writes different integer, string and floating point
 *     types to a memory buffer and allows reading
+ * @symbols:
+ * - gst_byte_writer_put_uint8_unchecked
+ * - gst_byte_writer_put_uint16_be_unchecked
+ * - gst_byte_writer_put_uint24_be_unchecked
+ * - gst_byte_writer_put_uint32_be_unchecked
+ * - gst_byte_writer_put_uint64_be_unchecked
+ * - gst_byte_writer_put_uint16_le_unchecked
+ * - gst_byte_writer_put_uint24_le_unchecked
+ * - gst_byte_writer_put_uint32_le_unchecked
+ * - gst_byte_writer_put_uint64_le_unchecked
+ * - gst_byte_writer_put_int8_unchecked
+ * - gst_byte_writer_put_int16_be_unchecked
+ * - gst_byte_writer_put_int24_be_unchecked
+ * - gst_byte_writer_put_int32_be_unchecked
+ * - gst_byte_writer_put_int64_be_unchecked
+ * - gst_byte_writer_put_int16_le_unchecked
+ * - gst_byte_writer_put_int24_le_unchecked
+ * - gst_byte_writer_put_int32_le_unchecked
+ * - gst_byte_writer_put_int64_le_unchecked
+ * - gst_byte_writer_put_float32_be_unchecked
+ * - gst_byte_writer_put_float64_be_unchecked
+ * - gst_byte_writer_put_float32_le_unchecked
+ * - gst_byte_writer_put_float64_le_unchecked
+ * - gst_byte_writer_put_data_unchecked
+ * - gst_byte_writer_fill_unchecked
 *
 * #GstByteWriter provides a byte writer and reader that can write/read different
 * integer and floating point types to/from a memory buffer. It provides functions
--- a/libs/gst/base/meson.build
+++ b/libs/gst/base/meson.build
@ -53,7 +53,7 @@ gst_base = library('gstbase-@0@'.format(apiversion),

 if build_gir
  gst_gir_extra_args = gir_init_section + [ '--c-include=gst/base/base.h' ]
-  gst_base_gen_sources += [gnome.generate_gir(gst_base,
+  gst_base_gir = gnome.generate_gir(gst_base,
    sources : gst_base_sources + gst_base_headers,
    namespace : 'GstBase',
    nsversion : apiversion,
@ -65,7 +65,9 @@ if build_gir
    includes : ['GLib-2.0', 'GObject-2.0', 'GModule-2.0', 'Gst-1.0'],
    install : true,
    extra_args : gst_gir_extra_args,
-  )]
+  )
+
+  gst_base_gen_sources += [gst_base_gir]
 endif

 gst_base_dep = declare_dependency(link_with : gst_base,
--- a/libs/gst/check/meson.build
+++ b/libs/gst/check/meson.build
@ -53,7 +53,7 @@ gst_check_gen_sources = []

 if build_gir
  gst_gir_extra_args = gir_init_section + [ '--c-include=gst/check/check.h' ]
-  gst_check_gen_sources += [gnome.generate_gir(gst_check,
+  gst_check_gir = gnome.generate_gir(gst_check,
    sources : gst_check_sources + gst_check_headers,
    namespace : 'GstCheck',
    nsversion : apiversion,
@ -65,7 +65,8 @@ if build_gir
    includes : ['GLib-2.0', 'GObject-2.0', 'GModule-2.0', 'Gst-1.0'],
    install : true,
    extra_args : gst_gir_extra_args,
-  )]
+  )
+  gst_check_gen_sources += gst_check_gir
 endif

 gst_check_dep = declare_dependency(link_with : gst_check,
--- a/meson.build
+++ b/meson.build
@ -1,6 +1,6 @@
 project('gstreamer', 'c',
  version : '1.17.0.1',
-  meson_version : '>= 0.47',
+  meson_version : '>= 0.48',
  default_options : [ 'warning_level=1',
                      'buildtype=debugoptimized' ])

@ -521,6 +521,7 @@ endif
 subdir('pkgconfig')
 subdir('tests')
 subdir('data')
+subdir('docs')

 # xgettext is optional (on Windows for instance)
 if find_program('xgettext', required : get_option('nls')).found()
@ -529,7 +530,5 @@ if find_program('xgettext', required : get_option('nls')).found()
 endif

 configure_file(output : 'config.h', configuration : cdata)
-
 run_command(python3, '-c', 'import shutil; shutil.copy("hooks/pre-commit.hook", ".git/hooks/pre-commit")')
-
 install_data('gst-element-check-1.0.m4', install_dir : join_paths(get_option('datadir'), 'aclocal'))
--- a/meson_options.txt
+++ b/meson_options.txt
@ -44,3 +44,5 @@ option('package-name', type : 'string', yield : true,
       description : 'package name to use in plugins')
 option('package-origin', type : 'string', value : 'Unknown package origin', yield : true,
       description : 'package origin URL to use in plugins')
+option('doc', type : 'feature', value : 'auto', yield: true,
+       description: 'Enable documentation.')
--- a/plugins/elements/gstcapsfilter.c
+++ b/plugins/elements/gstcapsfilter.c
@ -22,9 +22,9 @@
 /**
 * SECTION:element-capsfilter
 * @title: capsfilter
+ * @short_description: enforce limitations on the data format
 *
- * The element does not modify data as such, but can enforce limitations on the
- * data format.
+ * The element does not modify data as such, but can enforce limitations on the data format.
 *
 * ## Example launch line
 * |[
--- a/plugins/elements/gstelements.c
+++ b/plugins/elements/gstelements.c
@ -19,7 +19,11 @@
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */
-
+/**
+ * plugin-coreelements:
+ *
+ * GStreamer core elements
+ */

 #ifdef HAVE_CONFIG_H
 #  include "config.h"
--- a/plugins/elements/meson.build
+++ b/plugins/elements/meson.build
@ -34,3 +34,5 @@ gst_elements = library('gstcoreelements',
  install_dir : plugins_install_dir,
 )
 pkgconfig.generate(gst_elements, install_dir : plugins_pkgconfig_install_dir)
+
+plugins += [gst_elements]
--- a/plugins/meson.build
+++ b/plugins/meson.build
@ -1,3 +1,4 @@
+plugins = []
 subdir('elements')
 if tracer_hooks
  subdir('tracers')
--- a/tools/tools.h
+++ b/tools/tools.h
@ -31,7 +31,7 @@
 /*
 * This is a kind of hacky way to make all the tools use the same version code.
 * If anyone knows a less hacky way to get this done, feel free to implement it.
- * 
+ *
 * It also includes all the files that all the tools require.
 */