wireplumber/src/loop-source.c

/* WirePlumber
 *
 * Copyright © 2019 Collabora Ltd.
 *    @author George Kiagiadakis <george.kiagiadakis@collabora.com>
 *
 * This program 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 program 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 program.  If not, see <https://www.gnu.org/licenses/>.
*/

#define G_LOG_DOMAIN "wireplumber-loop"

#include "loop-source.h"

#define WP_LOOP_SOURCE(x) ((WpLoopSource *) x)

typedef struct _WpLoopSource WpLoopSource;

struct _WpLoopSource
{
  GSource parent;
  struct pw_loop *loop;
};

static gboolean
wp_loop_source_dispatch (GSource * s, GSourceFunc callback, gpointer user_data)
{
  int result;

  pw_loop_enter (WP_LOOP_SOURCE(s)->loop);
  result = pw_loop_iterate (WP_LOOP_SOURCE(s)->loop, 0);
  pw_loop_leave (WP_LOOP_SOURCE(s)->loop);

  if (G_UNLIKELY (result < 0))
    g_warning ("pw_loop_iterate failed: %s", spa_strerror (result));

  return G_SOURCE_CONTINUE;
}

static void
wp_loop_source_finalize (GSource * s)
{
  pw_loop_destroy (WP_LOOP_SOURCE(s)->loop);
}

static GSourceFuncs source_funcs = {
  NULL,
  NULL,
  wp_loop_source_dispatch,
  wp_loop_source_finalize
};

GSource *
wp_loop_source_new (void)
{
  GSource *s = g_source_new (&source_funcs, sizeof (WpLoopSource));
  WP_LOOP_SOURCE(s)->loop = pw_loop_new (NULL);

  g_source_add_unix_fd (s,
      pw_loop_get_fd (WP_LOOP_SOURCE(s)->loop),
      G_IO_IN | G_IO_ERR | G_IO_HUP);

  return (GSource *) s;
}

struct pw_loop *
wp_loop_source_get_loop (GSource *s)
{
  return WP_LOOP_SOURCE(s)->loop;
}