/* * 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. */ #ifndef MPD_PLAYER_H #define MPD_PLAYER_H #include "notify.h" #include "audio_format.h" #include <stdint.h> enum player_state { PLAYER_STATE_STOP = 0, PLAYER_STATE_PAUSE, PLAYER_STATE_PLAY }; enum player_command { PLAYER_COMMAND_NONE = 0, PLAYER_COMMAND_EXIT, PLAYER_COMMAND_STOP, PLAYER_COMMAND_PAUSE, PLAYER_COMMAND_SEEK, PLAYER_COMMAND_CLOSE_AUDIO, /** * At least one audio_output.enabled flag has been modified; * commit those changes to the output threads. */ PLAYER_COMMAND_UPDATE_AUDIO, /** player_control.next_song has been updated */ PLAYER_COMMAND_QUEUE, /** * cancel pre-decoding player_control.next_song; if the player * has already started playing this song, it will completely * stop */ PLAYER_COMMAND_CANCEL, /** * Refresh status information in the #player_control struct, * e.g. elapsed_time. */ PLAYER_COMMAND_REFRESH, }; enum player_error { PLAYER_ERROR_NOERROR = 0, PLAYER_ERROR_FILE, PLAYER_ERROR_AUDIO, PLAYER_ERROR_SYSTEM, PLAYER_ERROR_UNKTYPE, PLAYER_ERROR_FILENOTFOUND, }; struct player_status { enum player_state state; uint16_t bit_rate; struct audio_format audio_format; float total_time; float elapsed_time; }; struct player_control { unsigned buffer_chunks; unsigned int buffered_before_play; /** the handle of the player thread, or NULL if the player thread isn't running */ GThread *thread; struct notify notify; volatile enum player_command command; volatile enum player_state state; volatile enum player_error error; uint16_t bit_rate; struct audio_format audio_format; float total_time; float elapsed_time; struct song *volatile next_song; struct song *errored_song; volatile double seek_where; float cross_fade_seconds; double total_play_time; }; extern struct player_control pc; void pc_init(unsigned buffer_chunks, unsigned buffered_before_play); void pc_deinit(void); /** * Call this function when the specified song pointer is about to be * invalidated. This makes sure that player_control.errored_song does * not point to an invalid pointer. */ void pc_song_deleted(const struct song *song); void pc_play(struct song *song); /** * see PLAYER_COMMAND_CANCEL */ void pc_cancel(void); void pc_set_pause(bool pause_flag); void pc_pause(void); void pc_kill(void); void pc_get_status(struct player_status *status); enum player_state pc_get_state(void); void pc_clear_error(void); /** * Returns the human-readable message describing the last error during * playback, NULL if no error occurred. The caller has to free the * returned string. */ char * pc_get_error_message(void); enum player_error pc_get_error(void); void pc_stop(void); void pc_update_audio(void); void pc_enqueue_song(struct song *song); /** * Makes the player thread seek the specified song to a position. * * @return true on success, false on failure (e.g. if MPD isn't * playing currently) */ bool pc_seek(struct song *song, float seek_time); void pc_set_cross_fade(float cross_fade_seconds); float pc_get_cross_fade(void); double pc_get_total_play_time(void); #endif