pipewire/src/client/introspect.c

/* Pinos
 * Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include <string.h>

#include "client/pinos.h"

#include "client/context.h"
#include "client/enumtypes.h"
#include "client/subscribe.h"

#include "client/private.h"

static void
fill_info (PinosSourceInfo *info, GDBusProxy *proxy)
{
  GVariant *variant;

  info->id = proxy;

  info->source_path = g_dbus_proxy_get_object_path (proxy);

  if ((variant = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Name"))) {
    info->name = g_variant_get_string (variant, NULL);
    g_variant_unref (variant);
  } else {
    info->name = "Unknown";
  }

  info->properties = pinos_properties_from_variant (
      g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Properties"));

  if ((variant = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "State"))) {
    info->state = g_variant_get_uint32 (variant);
    g_variant_unref (variant);
  } else {
    info->state = PINOS_SOURCE_STATE_ERROR;
  }

  if ((variant = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "PossibleFormats"))) {
    gsize len;
    gchar *formats = g_variant_dup_string (variant, &len);
    info->formats = g_bytes_new_take (formats, len + 1);
    g_variant_unref (variant);
  } else {
    info->formats = NULL;
  }
}

static void
client_clear_info (PinosSourceInfo *info)
{
  if (info->properties)
    pinos_properties_free (info->properties);
  if (info->formats)
    g_bytes_unref (info->formats);
}

/**
 * pinos_context_list_source_info:
 * @context: a connected #PinosContext
 * @flags: extra #PinosSourceInfoFlags
 * @cb: a #PinosSourceInfoCallback
 * @cancelable: a #GCancellable
 * @user_data: user data passed to @cb
 *
 * Call @cb for each source. @cb will be called with NULL when there
 * are no more sources to list.
 */
void
pinos_context_list_source_info (PinosContext            *context,
                                PinosSourceInfoFlags     flags,
                                PinosSourceInfoCallback  cb,
                                GCancellable            *cancellable,
                                gpointer                 user_data)
{
  GList *walk;
  PinosContextPrivate *priv = context->priv;

  g_return_if_fail (PINOS_IS_CONTEXT (context));
  g_return_if_fail (cb != NULL);

  for (walk = priv->sources; walk; walk = g_list_next (walk)) {
    GDBusProxy *proxy = walk->data;
    PinosSourceInfo info;

    client_fill_info (&info, proxy);
    cb (context, &info, user_data);
    client_clear_info (&info);
  }
  cb (context, NULL, user_data);
}

/**
 * pinos_context_get_source_info:
 * @context: a connected #PinosContext
 * @id: a source id
 * @flags: extra #PinosSourceInfoFlags
 * @cb: a #PinosSourceInfoCallback
 * @cancelable: a #GCancellable
 * @user_data: user data passed to @cb
 *
 * Call @cb for each source. @cb will be called with NULL when there
 * are no more sources to list.
 */
void
pinos_context_get_source_info_by_id (PinosContext *context,
                                     gpointer id,
                                     PinosSourceInfoFlags flags,
                                     PinosSourceInfoCallback cb,
                                     GCancellable *cancellable,
                                     gpointer user_data)
{
  PinosSourceInfo info;
  GDBusProxy *proxy;

  g_return_if_fail (PINOS_IS_CONTEXT (context));
  g_return_if_fail (id != NULL);
  g_return_if_fail (cb != NULL);

  proxy = G_DBUS_PROXY (id);

  client_fill_info (&info, proxy);
  cb (context, &info, user_data);
  client_clear_info (&info);
  cb (context, NULL, user_data);
}