/* * Copyright (C) 2003-2009 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "../output_api.h" #include "../timer.h" #include <glib.h> #include <assert.h> struct null_data { bool sync; Timer *timer; }; static void * null_init(G_GNUC_UNUSED const struct audio_format *audio_format, G_GNUC_UNUSED const struct config_param *param, G_GNUC_UNUSED GError **error) { struct null_data *nd = g_new(struct null_data, 1); nd->sync = config_get_block_bool(param, "sync", true); nd->timer = NULL; return nd; } static void null_finish(void *data) { struct null_data *nd = data; assert(nd->timer == NULL); g_free(nd); } static bool null_open(void *data, struct audio_format *audio_format, G_GNUC_UNUSED GError **error) { struct null_data *nd = data; if (nd->sync) nd->timer = timer_new(audio_format); return true; } static void null_close(void *data) { struct null_data *nd = data; if (nd->timer != NULL) { timer_free(nd->timer); nd->timer = NULL; } } static size_t null_play(void *data, G_GNUC_UNUSED const void *chunk, size_t size, G_GNUC_UNUSED GError **error) { struct null_data *nd = data; Timer *timer = nd->timer; if (!nd->sync) return size; if (!timer->started) timer_start(timer); else timer_sync(timer); timer_add(timer, size); return size; } static void null_cancel(void *data) { struct null_data *nd = data; if (!nd->sync) return; timer_reset(nd->timer); } const struct audio_output_plugin null_output_plugin = { .name = "null", .init = null_init, .finish = null_finish, .open = null_open, .close = null_close, .play = null_play, .cancel = null_cancel, };