/* the Music Player Daemon (MPD) * Copyright (C) 2008 Max Kellermann <max@duempel.org> * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "decoder_control.h" #include <assert.h> struct decoder_control dc; void dc_init(void) { notify_init(&dc.notify); dc.state = DECODE_STATE_STOP; dc.command = DECODE_COMMAND_NONE; dc.error = DECODE_ERROR_NOERROR; } void dc_deinit(void) { notify_deinit(&dc.notify); } void dc_command_wait(struct notify *notify) { while (dc.command != DECODE_COMMAND_NONE) { notify_signal(&dc.notify); notify_wait(notify); } } static void dc_command(struct notify *notify, enum decoder_command cmd) { dc.command = cmd; dc_command_wait(notify); } static void dc_command_async(enum decoder_command cmd) { dc.command = cmd; notify_signal(&dc.notify); } void dc_start(struct notify *notify, struct song *song) { assert(song != NULL); dc.next_song = song; dc.error = DECODE_ERROR_NOERROR; dc_command(notify, DECODE_COMMAND_START); } void dc_start_async(struct song *song) { assert(song != NULL); dc.next_song = song; dc.error = DECODE_ERROR_NOERROR; dc_command_async(DECODE_COMMAND_START); } void dc_stop(struct notify *notify) { if (dc.command == DECODE_COMMAND_START || dc.state != DECODE_STATE_STOP) dc_command(notify, DECODE_COMMAND_STOP); } int dc_seek(struct notify *notify, double where) { assert(where >= 0.0); if (dc.state == DECODE_STATE_STOP || !dc.seekable) return -1; dc.seekWhere = where; dc.seekError = 0; dc_command(notify, DECODE_COMMAND_SEEK); if (dc.seekError) return -1; return 0; }