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169 lines
4.5 KiB
C
169 lines
4.5 KiB
C
/* libmpdclient
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(c) 2003-2015 The Music Player Daemon Project
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This project's homepage is: http://www.musicpd.org
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Music Player Daemon nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*! \file
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* \brief MPD client library
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*
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* Do not include this header directly. Use mpd/client.h instead.
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*/
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#ifndef MPD_ENTITY_H
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#define MPD_ENTITY_H
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#include <mpd/song.h>
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#include <mpd/directory.h>
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#include <mpd/client.h>
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#include <mpd/compiler.h>
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struct mpd_pair;
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/**
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* The type of a #mpd_entity object.
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*/
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enum mpd_entity_type {
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/**
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* The type of the entity received from MPD is not implemented
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* in this version of libmpdclient.
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*/
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MPD_ENTITY_TYPE_UNKNOWN,
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/**
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* A directory (#mpd_directory) containing more entities.
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*/
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MPD_ENTITY_TYPE_DIRECTORY,
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/**
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* A song file (#mpd_song) which can be added to the playlist.
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*/
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MPD_ENTITY_TYPE_SONG,
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/**
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* A stored playlist (#mpd_playlist).
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*/
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MPD_ENTITY_TYPE_PLAYLIST,
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};
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/**
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* \struct mpd_entity
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*
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* An "entity" is an object returned by commands like "lsinfo". It is
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* an object wrapping all possible entity types.
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*/
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struct mpd_entity;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Releases an entity. This also frees the wrapped object.
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*/
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void
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mpd_entity_free(struct mpd_entity *entity);
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/**
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* @return the type of this entity.
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*/
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mpd_pure
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enum mpd_entity_type
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mpd_entity_get_type(const struct mpd_entity *entity);
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/**
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* Obtains a pointer to the #mpd_directory object enclosed by this
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* #mpd_entity. Calling this function is only allowed of
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* mpd_entity_get_type() has returned #MPD_ENTITY_TYPE_DIRECTORY.
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*
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* @return the directory object
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*/
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mpd_pure
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const struct mpd_directory *
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mpd_entity_get_directory(const struct mpd_entity *entity);
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/**
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* Obtains a pointer to the #mpd_song object enclosed by this
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* #mpd_entity. Calling this function is only allowed of
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* mpd_entity_get_type() has returned #MPD_ENTITY_TYPE_SONG.
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*
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* @return the song object
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*/
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mpd_pure
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const struct mpd_song *
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mpd_entity_get_song(const struct mpd_entity *entity);
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/**
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* Obtains a pointer to the #mpd_playlist object enclosed by
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* this #mpd_entity. Calling this function is only allowed of
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* mpd_entity_get_type() has returned #MPD_ENTITY_TYPE_PLAYLIST.
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*
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* @return the directory object
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*/
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mpd_pure
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const struct mpd_playlist *
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mpd_entity_get_playlist(const struct mpd_entity *entity);
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/**
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* Begins parsing a new entity.
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*
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* @param pair the first pair in this entity
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* @return the new #mpd_entity object, or NULL on error (out of memory)
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*/
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mpd_malloc
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struct mpd_entity *
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mpd_entity_begin(const struct mpd_pair *pair);
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/**
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* Parses the pair, adding its information to the specified
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* #mpd_entity object.
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*
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* @return true if the pair was parsed and added to the entity (or if
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* the pair was not understood and ignored), false if this pair is the
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* beginning of the next entity
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*/
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bool
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mpd_entity_feed(struct mpd_entity *entity, const struct mpd_pair *pair);
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/**
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* Receives the next entity from the MPD server.
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*
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* @return an entity object, or NULL on error or if the entity list is
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* finished
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*/
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mpd_malloc
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struct mpd_entity *
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mpd_recv_entity(struct mpd_connection *connection);
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#ifdef __cplusplus
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}
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#endif
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#endif
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