/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include <string.h>

#include <locale.h>

#include <glib/gprintf.h>

#include "tools.h"

#define PUT_START_TAG(pfx,tag)                                  \

G_STMT_START{                                                   \

  g_print ("%*.*s<%s>\n", pfx, pfx, "", tag);                   \

}G_STMT_END

#define PUT_END_TAG(pfx,tag)                                    \

G_STMT_START{                                                   \

  g_print ("%*.*s</%s>\n", pfx, pfx, "", tag);                  \

}G_STMT_END

#define PUT_ESCAPED(pfx,tag,value)                              \

G_STMT_START{                                                   \

  const gchar *toconv = value;                                  \

  if (value) {                                                  \

    gchar *v = g_markup_escape_text (toconv, strlen (toconv));  \

    g_print ("%*.*s<%s>%s</%s>\n", pfx, pfx, "", tag, v, tag);  \

    g_free (v);                                                 \

  }                                                             \

}G_STMT_END

#ifdef G_HAVE_ISO_VARARGS

#define PUT_STRING(pfx, ...)                                    \

G_STMT_START{                                                   \

  gchar *ps_val = g_strdup_printf(__VA_ARGS__);                 \

  g_print ("%*.*s%s\n", pfx, pfx, "", ps_val);                  \

  g_free(ps_val);                                               \

}G_STMT_END

#elif defined(G_HAVE_GNUC_VARARGS)

#define PUT_STRING(pfx, str, a...)                              \

G_STMT_START{                                                   \

  g_print ("%*.*s"str"\n", pfx, pfx, "" , ##a);                 \

}G_STMT_END

#else

static inline void

PUT_STRING (int pfx, const char *format, ...)

{

  va_list varargs;

  g_print ("%*.*s", pfx, pfx, "");

  va_start (varargs, format);

  g_vprintf (format, varargs);

  va_end (varargs);

  g_print ("\n");

}

#endif

static void

print_caps (const GstCaps * caps, gint pfx)

{

  char *s;

  if (!caps)

    return;

  s = gst_caps_to_string (caps);

  PUT_ESCAPED (pfx, "caps", s);

  g_free (s);

}

#if 0

static void

print_formats (const GstFormat * formats, gint pfx)

{

  while (formats && *formats) {

    const GstFormatDefinition *definition;

    definition = gst_format_get_details (*formats);

    if (definition)

      PUT_STRING (pfx, "<format id=\"%d\" nick=\"%s\">%s</format>",

          *formats, definition->nick, definition->description);

    else

      PUT_STRING (pfx, "<format id=\"%d\">unknown</format>", *formats);

    formats++;

  }

}

#endif

static void

print_query_types (const GstQueryType * types, gint pfx)

{

  while (types && *types) {

    const GstQueryTypeDefinition *definition;

    definition = gst_query_type_get_details (*types);

    if (definition)

      PUT_STRING (pfx, "<query-type id=\"%d\" nick=\"%s\">%s</query-type>",

          *types, definition->nick, definition->description);

    else

      PUT_STRING (pfx, "<query-type id=\"%d\">unknown</query-type>", *types);

    types++;

  }

}

#if 0

static void

print_event_masks (const GstEventMask * masks, gint pfx)

{

#ifndef GST_DISABLE_ENUMTYPES

  GType event_type;

  GEnumClass *klass;

  GType event_flags;

  GFlagsClass *flags_class = NULL;

  event_type = gst_event_type_get_type ();

  klass = (GEnumClass *) g_type_class_ref (event_type);

  while (masks && masks->type) {

    GEnumValue *value;

    gint flags = 0, index = 0;

    switch (masks->type) {

      case GST_EVENT_SEEK:

        flags = masks->flags;

        event_flags = gst_seek_type_get_type ();

        flags_class = (GFlagsClass *) g_type_class_ref (event_flags);

        break;

      default:

        break;

    }

    value = g_enum_get_value (klass, masks->type);

    PUT_STRING (pfx, "<event type=\"%s\">", value->value_nick);

    while (flags) {

      GFlagsValue *value;

      if (flags & 1) {

        value = g_flags_get_first_value (flags_class, 1 << index);

        if (value)

          PUT_ESCAPED (pfx + 1, "flag", value->value_nick);

        else

          PUT_ESCAPED (pfx + 1, "flag", "?");

      }

      flags >>= 1;

      index++;

    }

    PUT_END_TAG (pfx, "event");

    masks++;

  }

#endif

}

#endif

static void

output_hierarchy (GType type, gint level, gint * maxlevel)

{

  GType parent;

  parent = g_type_parent (type);

  *maxlevel = *maxlevel + 1;

  level++;

  PUT_STRING (level, "<object name=\"%s\">", g_type_name (type));

  if (parent)

    output_hierarchy (parent, level, maxlevel);

  PUT_END_TAG (level, "object");

}

static void

print_element_properties (GstElement * element, gint pfx)

{

  GParamSpec **property_specs;

  guint num_properties;

  gint i;

  gboolean readable;

  property_specs = g_object_class_list_properties

      (G_OBJECT_GET_CLASS (element), &num_properties);

  PUT_START_TAG (pfx, "element-properties");

  for (i = 0; i < num_properties; i++) {

    GValue value = { 0, };

    GParamSpec *param = property_specs[i];

    readable = FALSE;

    g_value_init (&value, param->value_type);

    if (param->flags & G_PARAM_READABLE) {

      g_object_get_property (G_OBJECT (element), param->name, &value);

      readable = TRUE;

    }

    PUT_START_TAG (pfx + 1, "element-property");

    PUT_ESCAPED (pfx + 2, "name", g_param_spec_get_name (param));

    PUT_ESCAPED (pfx + 2, "type", g_type_name (param->value_type));

    PUT_ESCAPED (pfx + 2, "nick", g_param_spec_get_nick (param));

    PUT_ESCAPED (pfx + 2, "blurb", g_param_spec_get_blurb (param));

    if (readable) {

      PUT_ESCAPED (pfx + 2, "flags", "RW");

    } else {

      PUT_ESCAPED (pfx + 2, "flags", "W");

    }

    switch (G_VALUE_TYPE (&value)) {

      case G_TYPE_STRING:

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      case G_TYPE_BOOLEAN:

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      case G_TYPE_ULONG:

      {

        GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (param);

        PUT_STRING (pfx + 2, "<range min=\"%lu\" max=\"%lu\"/>",

            pulong->minimum, pulong->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_LONG:

      {

        GParamSpecLong *plong = G_PARAM_SPEC_LONG (param);

        PUT_STRING (pfx + 2, "<range min=\"%ld\" max=\"%ld\"/>",

            plong->minimum, plong->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_UINT:

      {

        GParamSpecUInt *puint = G_PARAM_SPEC_UINT (param);

        PUT_STRING (pfx + 2, "<range min=\"%u\" max=\"%u\"/>",

            puint->minimum, puint->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_INT:

      {

        GParamSpecInt *pint = G_PARAM_SPEC_INT (param);

        PUT_STRING (pfx + 2, "<range min=\"%d\" max=\"%d\"/>",

            pint->minimum, pint->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_UINT64:

      {

        GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (param);

        PUT_STRING (pfx + 2,

            "<range min=\"%" G_GUINT64_FORMAT "\" max=\"%" G_GUINT64_FORMAT

            "\"/>", puint64->minimum, puint64->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_INT64:

      {

        GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (param);

        PUT_STRING (pfx + 2,

            "<range min=\"%" G_GINT64_FORMAT "\" max=\"%" G_GINT64_FORMAT

            "\"/>", pint64->minimum, pint64->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_FLOAT:

      {

        GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (param);

        PUT_STRING (pfx + 2, "<range min=\"%f\" max=\"%f\"/>",

            pfloat->minimum, pfloat->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      case G_TYPE_DOUBLE:

      {

        GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (param);

        PUT_STRING (pfx + 2, "<range min=\"%g\" max=\"%g\"/>",

            pdouble->minimum, pdouble->maximum);

        PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));

        break;

      }

      default:

        if (param->value_type == GST_TYPE_CAPS) {

          GstCaps *caps = g_value_peek_pointer (&value);

          if (!caps)

            PUT_ESCAPED (pfx + 2, "default", "NULL");

          else {

            print_caps (caps, 2);

          }

        } else if (G_IS_PARAM_SPEC_ENUM (param)) {

          GEnumValue *values;

          guint j = 0;

          gint enum_value;

          values = G_ENUM_CLASS (g_type_class_ref (param->value_type))->values;

          enum_value = g_value_get_enum (&value);

          while (values[j].value_name) {

            if (values[j].value == enum_value)

              break;

            j++;

          }

          PUT_STRING (pfx + 2, "<default>%d</default>", values[j].value);

          PUT_START_TAG (pfx + 2, "enum-values");

          j = 0;

          while (values[j].value_name) {

            PUT_STRING (pfx + 3, "<value value=\"%d\" nick=\"%s\"/>",

                values[j].value, values[j].value_nick);

            j++;

          }

          PUT_END_TAG (pfx + 2, "enum-values");

        } else if (G_IS_PARAM_SPEC_FLAGS (param)) {

          GFlagsValue *values;

          guint j = 0;

          gint flags_value;

          values = G_FLAGS_CLASS (g_type_class_ref (param->value_type))->values;

          flags_value = g_value_get_flags (&value);

          PUT_STRING (pfx + 2, "<default>%d</default>", flags_value);

          PUT_START_TAG (pfx + 2, "flags");

          j = 0;

          while (values[j].value_name) {

            PUT_STRING (pfx + 3, "<flag value=\"%d\" nick=\"%s\"/>",

                values[j].value, values[j].value_nick);

            j++;

          }

          PUT_END_TAG (pfx + 2, "flags");

        } else if (G_IS_PARAM_SPEC_OBJECT (param)) {

          PUT_ESCAPED (pfx + 2, "object-type", g_type_name (param->value_type));

        }

        break;

    }

    PUT_END_TAG (pfx + 1, "element-property");

  }

  PUT_END_TAG (pfx, "element-properties");

  g_free (property_specs);

}

static void

print_element_signals (GstElement * element, gint pfx)

{

  guint *signals;

  guint nsignals;

  gint i, k;

  GSignalQuery *query;

  signals = g_signal_list_ids (G_OBJECT_TYPE (element), &nsignals);

  for (k = 0; k < 2; k++) {

    gint counted = 0;

    if (k == 0)

      PUT_START_TAG (pfx, "element-signals");

    else

      PUT_START_TAG (pfx, "element-actions");

    for (i = 0; i < nsignals; i++) {

      gint n_params;

      GType return_type;

      const GType *param_types;

      gint j;

      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))) {

        n_params = query->n_params;

        return_type = query->return_type;

        param_types = query->param_types;

        PUT_START_TAG (pfx + 1, "signal");

        PUT_ESCAPED (pfx + 2, "name", query->signal_name);

        PUT_ESCAPED (pfx + 2, "return-type", g_type_name (return_type));

        PUT_ESCAPED (pfx + 2, "object-type",

            g_type_name (G_OBJECT_TYPE (element)));

        PUT_START_TAG (pfx + 2, "params");

        for (j = 0; j < n_params; j++) {

          PUT_ESCAPED (pfx + 3, "type", g_type_name (param_types[j]));

        }

        PUT_END_TAG (pfx + 2, "params");

        PUT_END_TAG (pfx + 1, "signal");

        counted++;

      }

      g_free (query);

    }

    if (k == 0)

      PUT_END_TAG (pfx, "element-signals");

    else

      PUT_END_TAG (pfx, "element-actions");

  }

}

static gint

print_element_info (GstElementFactory * factory)

{

  GstElement *element;

  GstObjectClass *gstobject_class;

  GstElementClass *gstelement_class;

  GList *pads;

  GstPad *pad;

  GstStaticPadTemplate *padtemplate;

  gint maxlevel = 0;

  element = gst_element_factory_create (factory, "element");

  if (!element) {

    g_print ("couldn't construct element for some reason\n");

    return -1;

  }

  PUT_START_TAG (0, "element");

  PUT_ESCAPED (1, "name", GST_PLUGIN_FEATURE_NAME (factory));

  gstobject_class = GST_OBJECT_CLASS (G_OBJECT_GET_CLASS (element));

  gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));

  PUT_START_TAG (1, "details");

  PUT_ESCAPED (2, "long-name", factory->details.longname);

  PUT_ESCAPED (2, "class", factory->details.klass);

  PUT_ESCAPED (2, "description", factory->details.description);

  PUT_ESCAPED (2, "authors", factory->details.author);

  PUT_END_TAG (1, "details");

  output_hierarchy (G_OBJECT_TYPE (element), 0, &maxlevel);

  PUT_START_TAG (1, "pad-templates");

  if (factory->numpadtemplates) {

    pads = factory->staticpadtemplates;

    while (pads) {

      padtemplate = (GstStaticPadTemplate *) (pads->data);

      pads = g_list_next (pads);

      PUT_START_TAG (2, "pad-template");

      PUT_ESCAPED (3, "name", padtemplate->name_template);

      if (padtemplate->direction == GST_PAD_SRC)

        PUT_ESCAPED (3, "direction", "src");

      else if (padtemplate->direction == GST_PAD_SINK)

        PUT_ESCAPED (3, "direction", "sink");

      else

        PUT_ESCAPED (3, "direction", "unknown");

      if (padtemplate->presence == GST_PAD_ALWAYS)

        PUT_ESCAPED (3, "presence", "always");

      else if (padtemplate->presence == GST_PAD_SOMETIMES)

        PUT_ESCAPED (3, "presence", "sometimes");

      else if (padtemplate->presence == GST_PAD_REQUEST) {

        PUT_ESCAPED (3, "presence", "request");

        PUT_ESCAPED (3, "request-function",

            GST_DEBUG_FUNCPTR_NAME (gstelement_class->request_new_pad));

      } else

        PUT_ESCAPED (3, "presence", "unknown");

      if (padtemplate->static_caps.string) {

        print_caps (gst_static_caps_get (&padtemplate->static_caps), 3);

      }

      PUT_END_TAG (2, "pad-template");

    }

  }

  PUT_END_TAG (1, "pad-templates");

  PUT_START_TAG (1, "element-flags");

  PUT_END_TAG (1, "element-flags");

  if (GST_IS_BIN (element)) {

    PUT_START_TAG (1, "bin-flags");

    PUT_END_TAG (1, "bin-flags");

  }

  PUT_START_TAG (1, "element-implementation");

  PUT_STRING (2, "<state-change function=\"%s\"/>",

      GST_DEBUG_FUNCPTR_NAME (gstelement_class->change_state));

#ifndef GST_DISABLE_LOADSAVE

  PUT_STRING (2, "<save function=\"%s\"/>",

      GST_DEBUG_FUNCPTR_NAME (gstobject_class->save_thyself));

  PUT_STRING (2, "<load function=\"%s\"/>",

      GST_DEBUG_FUNCPTR_NAME (gstobject_class->restore_thyself));

#endif

  PUT_END_TAG (1, "element-implementation");

  PUT_START_TAG (1, "clocking-interaction");

  if (gst_element_requires_clock (element)) {

    PUT_STRING (2, "<requires-clock/>");

  }

  if (gst_element_provides_clock (element)) {