libvlc_media.h
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上传日期:2020-07-06
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文件大小:10k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * libvlc.h: libvlc external API
- *****************************************************************************
- * Copyright (C) 1998-2009 the VideoLAN team
- * $Id: e9156223f97c813be0a28879517e0fad856f5e97 $
- *
- * Authors: Clément Stenac <zorglub@videolan.org>
- * Jean-Paul Saman <jpsaman@videolan.org>
- * Pierre d'Herbemont <pdherbemont@videolan.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.
- *****************************************************************************/
- /**
- * file
- * This file defines libvlc_media external API
- */
- #ifndef VLC_LIBVLC_MEDIA_H
- #define VLC_LIBVLC_MEDIA_H 1
- /*****************************************************************************
- * media
- *****************************************************************************/
- /** defgroup libvlc_media libvlc_media
- * ingroup libvlc
- * LibVLC Media
- * @{
- */
- typedef struct libvlc_media_t libvlc_media_t;
- /* Meta Handling */
- /** defgroup libvlc_meta libvlc_meta
- * ingroup libvlc_media
- * LibVLC Media Meta
- * @{
- */
- typedef enum libvlc_meta_t {
- libvlc_meta_Title,
- libvlc_meta_Artist,
- libvlc_meta_Genre,
- libvlc_meta_Copyright,
- libvlc_meta_Album,
- libvlc_meta_TrackNumber,
- libvlc_meta_Description,
- libvlc_meta_Rating,
- libvlc_meta_Date,
- libvlc_meta_Setting,
- libvlc_meta_URL,
- libvlc_meta_Language,
- libvlc_meta_NowPlaying,
- libvlc_meta_Publisher,
- libvlc_meta_EncodedBy,
- libvlc_meta_ArtworkURL,
- libvlc_meta_TrackID,
- /* Add new meta types HERE */
- } libvlc_meta_t;
- /** @}*/
- /**
- * Note the order of libvlc_state_t enum must match exactly the order of
- * @see mediacontrol_PlayerStatus, @see input_state_e enums,
- * and VideoLAN.LibVLC.State (at bindings/cil/src/media.cs).
- *
- * Expected states by web plugins are:
- * IDLE/CLOSE=0, OPENING=1, BUFFERING=2, PLAYING=3, PAUSED=4,
- * STOPPING=5, ENDED=6, ERROR=7
- */
- typedef enum libvlc_state_t
- {
- libvlc_NothingSpecial=0,
- libvlc_Opening,
- libvlc_Buffering,
- libvlc_Playing,
- libvlc_Paused,
- libvlc_Stopped,
- libvlc_Ended,
- libvlc_Error
- } libvlc_state_t;
- /**
- * Create a media with the given MRL.
- *
- * param p_instance the instance
- * param psz_mrl the MRL to read
- * param p_e an initialized exception pointer
- * return the newly created media
- */
- VLC_PUBLIC_API libvlc_media_t * libvlc_media_new(
- libvlc_instance_t *p_instance,
- const char * psz_mrl,
- libvlc_exception_t *p_e );
- /**
- * Create a media as an empty node with the passed name.
- *
- * param p_instance the instance
- * param psz_name the name of the node
- * param p_e an initialized exception pointer
- * return the new empty media
- */
- VLC_PUBLIC_API libvlc_media_t * libvlc_media_new_as_node(
- libvlc_instance_t *p_instance,
- const char * psz_name,
- libvlc_exception_t *p_e );
- /**
- * Add an option to the media.
- *
- * This option will be used to determine how the media_player will
- * read the media. This allows to use VLC's advanced
- * reading/streaming options on a per-media basis.
- *
- * The options are detailed in vlc --long-help, for instance "--sout-all"
- *
- * param p_instance the instance
- * param ppsz_options the options (as a string)
- * param p_e an initialized exception pointer
- */
- VLC_PUBLIC_API void libvlc_media_add_option(
- libvlc_media_t * p_md,
- const char * ppsz_options,
- libvlc_exception_t * p_e );
- /**
- * Add an option to the media from an untrusted source.
- *
- * This option will be used to determine how the media_player will
- * read the media. This allows to use VLC's advanced
- * reading/streaming options on a per-media basis.
- *
- * The options are detailed in vlc --long-help, for instance "--sout-all"
- *
- * param p_instance the instance
- * param ppsz_options the options (as a string)
- * param p_e an initialized exception pointer
- */
- VLC_PUBLIC_API void libvlc_media_add_option_untrusted(
- libvlc_media_t * p_md,
- const char * ppsz_options,
- libvlc_exception_t * p_e );
- /**
- * Retain a reference to a media descriptor object (libvlc_media_t). Use
- * libvlc_media_release() to decrement the reference count of a
- * media descriptor object.
- *
- * param p_meta_desc a media descriptor object.
- */
- VLC_PUBLIC_API void libvlc_media_retain(
- libvlc_media_t *p_meta_desc );
- /**
- * Decrement the reference count of a media descriptor object. If the
- * reference count is 0, then libvlc_media_release() will release the
- * media descriptor object. It will send out an libvlc_MediaFreed event
- * to all listeners. If the media descriptor object has been released it
- * should not be used again.
- *
- * param p_meta_desc a media descriptor object.
- */
- VLC_PUBLIC_API void libvlc_media_release(
- libvlc_media_t *p_meta_desc );
- /**
- * Get the media resource locator (mrl) from a media descriptor object
- *
- * param p_md a media descriptor object
- * param p_e an initialized exception object
- * return string with mrl of media descriptor object
- */
- VLC_PUBLIC_API char * libvlc_media_get_mrl( libvlc_media_t * p_md,
- libvlc_exception_t * p_e );
- /**
- * Duplicate a media descriptor object.
- *
- * param p_meta_desc a media descriptor object.
- */
- VLC_PUBLIC_API libvlc_media_t * libvlc_media_duplicate( libvlc_media_t * );
- /**
- * Read the meta of the media.
- *
- * param p_meta_desc the media to read
- * param e_meta the meta to read
- * param p_e an initialized exception pointer
- * return the media's meta
- */
- VLC_PUBLIC_API char * libvlc_media_get_meta(
- libvlc_media_t *p_meta_desc,
- libvlc_meta_t e_meta,
- libvlc_exception_t *p_e );
- /**
- * Get current state of media descriptor object. Possible media states
- * are defined in libvlc_structures.c ( libvlc_NothingSpecial=0,
- * libvlc_Opening, libvlc_Buffering, libvlc_Playing, libvlc_Paused,
- * libvlc_Stopped, libvlc_Ended,
- * libvlc_Error).
- *
- * @see libvlc_state_t
- * param p_meta_desc a media descriptor object
- * param p_e an initialized exception object
- * return state of media descriptor object
- */
- VLC_PUBLIC_API libvlc_state_t libvlc_media_get_state(
- libvlc_media_t *p_meta_desc,
- libvlc_exception_t *p_e );
- /**
- * Get subitems of media descriptor object. This will increment
- * the reference count of supplied media descriptor object. Use
- * libvlc_media_list_release() to decrement the reference counting.
- *
- * param p_md media descriptor object
- * param p_e initalized exception object
- * return list of media descriptor subitems or NULL
- */
- /* This method uses libvlc_media_list_t, however, media_list usage is optionnal
- * and this is here for convenience */
- #define VLC_FORWARD_DECLARE_OBJECT(a) struct a
- VLC_PUBLIC_API VLC_FORWARD_DECLARE_OBJECT(libvlc_media_list_t *)
- libvlc_media_subitems( libvlc_media_t *p_md,
- libvlc_exception_t *p_e );
- /**
- * Get event manager from media descriptor object.
- * NOTE: this function doesn't increment reference counting.
- *
- * param p_md a media descriptor object
- * param p_e an initialized exception object
- * return event manager object
- */
- VLC_PUBLIC_API libvlc_event_manager_t *
- libvlc_media_event_manager( libvlc_media_t * p_md,
- libvlc_exception_t * p_e );
- /**
- * Get duration of media descriptor object item.
- *
- * param p_md media descriptor object
- * param p_e an initialized exception object
- * return duration of media item
- */
- VLC_PUBLIC_API libvlc_time_t
- libvlc_media_get_duration( libvlc_media_t * p_md,
- libvlc_exception_t * p_e );
- /**
- * Get preparsed status for media descriptor object.
- *
- * param p_md media descriptor object
- * param p_e an initialized exception object
- * return true if media object has been preparsed otherwise it returns false
- */
- VLC_PUBLIC_API int
- libvlc_media_is_preparsed( libvlc_media_t * p_md,
- libvlc_exception_t * p_e );
- /**
- * Sets media descriptor's user_data. user_data is specialized data
- * accessed by the host application, VLC.framework uses it as a pointer to
- * an native object that references a libvlc_media_t pointer
- *
- * param p_md media descriptor object
- * param p_new_user_data pointer to user data
- * param p_e an initialized exception object
- */
- VLC_PUBLIC_API void
- libvlc_media_set_user_data( libvlc_media_t * p_md,
- void * p_new_user_data,
- libvlc_exception_t * p_e);
- /**
- * Get media descriptor's user_data. user_data is specialized data
- * accessed by the host application, VLC.framework uses it as a pointer to
- * an native object that references a libvlc_media_t pointer
- *
- * param p_md media descriptor object
- * param p_e an initialized exception object
- */
- VLC_PUBLIC_API void *
- libvlc_media_get_user_data( libvlc_media_t * p_md,
- libvlc_exception_t * p_e);
- /** @}*/
- #endif /* VLC_LIBVLC_MEDIA_H */