vlc.h
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上传日期:2009-03-27
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- /*****************************************************************************
- * vlc.h: global header for vlc
- *****************************************************************************
- * Copyright (C) 1998-2004 VideoLAN
- * $Id: vlc.h 8880 2004-10-01 15:56:10Z gbazin $
- *
- * Authors: Vincent Seguin <seguin@via.ecp.fr>
- * Samuel Hocevar <sam@zoy.org>
- * Gildas Bazin <gbazin@netcourrier.com>
- * Derk-Jan Hartman <hartman at videolan dot 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, USA.
- *****************************************************************************/
- /**
- * defgroup libvlc Libvlc
- * This is libvlc, the base library of the VLC program.
- *
- * @{
- */
- #ifndef _VLC_VLC_H
- #define _VLC_VLC_H 1
- # ifdef __cplusplus
- extern "C" {
- # endif
- /*****************************************************************************
- * Our custom types
- *****************************************************************************/
- typedef int vlc_bool_t;
- typedef struct vlc_list_t vlc_list_t;
- typedef struct vlc_object_t vlc_object_t;
- /**
- * VLC value structure
- */
- typedef union
- {
- int i_int;
- vlc_bool_t b_bool;
- float f_float;
- char * psz_string;
- void * p_address;
- vlc_object_t * p_object;
- vlc_list_t * p_list;
- #if (defined( WIN32 ) && !defined( __MINGW32__ )) || defined( UNDER_CE )
- signed __int64 i_time;
- # else
- signed long long i_time;
- #endif
- struct { char *psz_name; int i_object_id; } var;
- /* Make sure the structure is at least 64bits */
- struct { char a, b, c, d, e, f, g, h; } padding;
- } vlc_value_t;
- /**
- * VLC list structure
- */
- struct vlc_list_t
- {
- int i_count;
- vlc_value_t * p_values;
- int * pi_types;
- };
- /*****************************************************************************
- * Error values
- *****************************************************************************/
- #define VLC_SUCCESS -0 /* No error */
- #define VLC_ENOMEM -1 /* Not enough memory */
- #define VLC_ETHREAD -2 /* Thread error */
- #define VLC_ETIMEOUT -3 /* Timeout */
- #define VLC_ENOMOD -10 /* Module not found */
- #define VLC_ENOOBJ -20 /* Object not found */
- #define VLC_EBADOBJ -21 /* Bad object type */
- #define VLC_ENOVAR -30 /* Variable not found */
- #define VLC_EBADVAR -31 /* Bad variable value */
- #define VLC_EEXIT -255 /* Program exited */
- #define VLC_EGENERIC -666 /* Generic error */
- /*****************************************************************************
- * Booleans
- *****************************************************************************/
- #define VLC_FALSE 0
- #define VLC_TRUE 1
- /*****************************************************************************
- * Playlist
- *****************************************************************************/
- /* Used by VLC_AddTarget() */
- #define PLAYLIST_INSERT 0x0001
- #define PLAYLIST_REPLACE 0x0002
- #define PLAYLIST_APPEND 0x0004
- #define PLAYLIST_GO 0x0008
- #define PLAYLIST_CHECK_INSERT 0x0010
- #define PLAYLIST_END -666
- /*****************************************************************************
- * Required internal headers
- *****************************************************************************/
- #if defined( __VLC__ )
- # include "vlc_common.h"
- #endif
- /*****************************************************************************
- * Exported libvlc API
- *****************************************************************************/
- /**
- * Retrieve libvlc version
- *
- * return a string containing the libvlc version
- */
- char const * VLC_Version ( void );
- /**
- * Return an error string
- *
- * param i_err an error code
- * return an error string
- */
- char const * VLC_Error ( int i_err );
- /**
- * Initialize libvlc
- *
- * This function allocates a vlc_t structure and returns a negative value
- * in case of failure. Also, the thread system is initialized
- *
- * return vlc object id or an error code
- */
- int VLC_Create( void );
- /**
- * Initialize a vlc_t structure
- *
- * This function initializes a previously allocated vlc_t structure:
- * - CPU detection
- * - gettext initialization
- * - message queue, module bank and playlist initialization
- * - configuration and commandline parsing
- *
- * param i_object a vlc object id
- * param i_argc the number of arguments
- * param ppsz_argv an array of arguments
- * return VLC_SUCCESS on success
- */
- int VLC_Init( int, int, char *[] );
- /**
- * Add an interface
- *
- * This function opens an interface plugin and runs it. If b_block is set
- * to 0, VLC_AddIntf will return immediately and let the interface run in a
- * separate thread. If b_block is set to 1, VLC_AddIntf will continue until
- * user requests to quit.
- *
- * param i_object a vlc object id
- * param psz_module a vlc module name of an interface
- * param b_block make this interface blocking
- * param b_play start playing when the interface is done loading
- * return VLC_SUCCESS on success
- */
- int VLC_AddIntf( int, char const *, vlc_bool_t, vlc_bool_t );
- /**
- * Ask vlc to die
- *
- * This function sets p_vlc->b_die to VLC_TRUE, but does not do any other
- * task. It is your duty to call VLC_CleanUp and VLC_Destroy afterwards.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_Die( int );
- /**
- * Clean up all the intf, playlist, vout and aout
- *
- * This function requests all intf, playlist, vout and aout objects to finish
- * and CleanUp. Only a blank VLC object should remain after this.
- *
- * note This function was previously called VLC_Stop
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_CleanUp( int );
- /**
- * Destroy all threads and the VLC object
- *
- * This function requests the running threads to finish, waits for their
- * termination, and destroys their structure.
- * Then it will de-init all VLC object initializations.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_Destroy( int );
- /**
- * Set a VLC variable
- *
- * This function sets a variable of VLC
- *
- * note Was previously called VLC_Set
- *
- * param i_object a vlc object id
- * param psz_var a vlc variable name
- * param value a vlc_value_t structure
- * return VLC_SUCCESS on success
- */
- int VLC_VariableSet( int, char const *, vlc_value_t );
- /**
- * Get a VLC variable
- *
- * This function gets the value of a variable of VLC
- * It stores it in the p_value argument
- *
- * note Was previously called VLC_Get
- *
- * param i_object a vlc object id
- * param psz_var a vlc variable name
- * param p_value a pointer to a vlc_value_t structure
- * return VLC_SUCCESS on success
- */
- int VLC_VariableGet( int, char const *, vlc_value_t * );
- /**
- * Add a target to the current playlist
- *
- * This funtion will add a target to the current playlist. If a playlist does
- * not exist, it will be created.
- *
- * param i_object a vlc object id
- * param psz_target the URI of the target to play
- * param ppsz_options an array of strings with input options (ie. :input-repeat)
- * param i_options the amount of options in the ppsz_options array
- * param i_mode the insert mode to insert the target into the playlist (PLAYLIST_* defines)
- * param i_pos the position at which to add the new target (PLAYLIST_END for end)
- * return VLC_SUCCESS on success
- */
- int VLC_AddTarget( int, char const *, const char **, int, int, int );
- /**
- * Start the playlist and play the currently selected playlist item
- *
- * If there is something in the playlist, and the playlist is not running,
- * then start the playlist and play the currently selected playlist item.
- * If an item is currently paused, then resume it.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_Play( int );
- /**
- * Pause the currently playing item. Resume it if already paused
- *
- * If an item is currently playing then pause it.
- * If the item is already paused, then resume playback.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_Pause( int );
- /**
- * Stop the playlist
- *
- * If an item is currently playing then stop it.
- * Set the playlist to a stopped state.
- *
- * note This function is new. The old VLC_Stop is now called VLC_CleanUp
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_Stop( int );
- /**
- * Tell if VLC is playing
- *
- * If an item is currently playing, it returns
- * VLC_TRUE, else VLC_FALSE
- *
- * param i_object a vlc object id
- * return VLC_TRUE or VLC_FALSE
- */
- vlc_bool_t VLC_IsPlaying( int );
- /**
- * Get the current position in a input
- *
- * Return the current position as a float
- * This method should be used for time sliders etc
- * note For some inputs, this will be unknown.
- *
- * param i_object a vlc object id
- * return a float in the range of 0.0 - 1.0
- */
- float VLC_PositionGet( int );
- /**
- * Set the current position in a input
- *
- * Set the current position as a float
- * This method should be used for time sliders etc
- * note For some inputs, this will be unknown.
- *
- * param i_object a vlc object id
- * param i_position a float in the range of 0.0 - 1.0
- * return a float in the range of 0.0 - 1.0
- */
- float VLC_PositionSet( int, float );
- /**
- * Get the current position in a input
- *
- * Return the current position in seconds from the start.
- * note For some inputs, this will be unknown.
- *
- * param i_object a vlc object id
- * return the offset from 0:00 in seconds
- */
- int VLC_TimeGet( int );
- /**
- * Seek to a position in the current input
- *
- * Seek i_seconds in the current input. If b_relative is set,
- * then the seek will be relative to the current position, otherwise
- * it will seek to i_seconds from the beginning of the input.
- * note For some inputs, this will be unknown.
- *
- * param i_object a vlc object id
- * param i_seconds seconds from current position or from beginning of input
- * param b_relative seek relative from current position
- * return VLC_SUCCESS on success
- */
- int VLC_TimeSet( int, int, vlc_bool_t );
- /**
- * Get the total length of a input
- *
- * Return the total length in seconds from the current input.
- * note For some inputs, this will be unknown.
- *
- * param i_object a vlc object id
- * return the length in seconds
- */
- int VLC_LengthGet( int );
- /**
- * Play the input faster than realtime
- *
- * 2x, 4x, 8x faster than realtime
- * note For some inputs, this will be impossible.
- *
- * param i_object a vlc object id
- * return the current speedrate
- */
- float VLC_SpeedFaster( int );
- /**
- * Play the input slower than realtime
- *
- * 1/2x, 1/4x, 1/8x slower than realtime
- * note For some inputs, this will be impossible.
- *
- * param i_object a vlc object id
- * return the current speedrate
- */
- float VLC_SpeedSlower( int );
- /**
- * Return the current playlist item
- *
- * param i_object a vlc object id
- * return the index of the playlistitem that is currently selected for play
- */
- int VLC_PlaylistIndex( int );
- /**
- * Total amount of items in the playlist
- *
- * param i_object a vlc object id
- * return amount of playlist items
- */
- int VLC_PlaylistNumberOfItems( int );
- /**
- * Next playlist item
- *
- * Skip to the next playlistitem and play it.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_PlaylistNext( int );
- /**
- * Previous playlist item
- *
- * Skip to the previous playlistitem and play it.
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_PlaylistPrev( int );
- /**
- * Clear the contents of the playlist
- *
- * Completly empty the entire playlist.
- *
- * note Was previously called VLC_ClearPlaylist
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_PlaylistClear( int );
- /**
- * Change the volume
- *
- * param i_object a vlc object id
- * param i_volume something in a range from 0-200
- * return the new volume (range 0-200 %)
- */
- int VLC_VolumeSet( int, int );
- /**
- * Get the current volume
- *
- * Retrieve the current volume.
- *
- * param i_object a vlc object id
- * return the current volume (range 0-200 %)
- */
- int VLC_VolumeGet( int );
- /**
- * Mute/Unmute the volume
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_VolumeMute( int );
- /**
- * Toggle Fullscreen mode
- *
- * Switch between normal and fullscreen video
- *
- * param i_object a vlc object id
- * return VLC_SUCCESS on success
- */
- int VLC_FullScreen( int );
- # ifdef __cplusplus
- }
- # endif
- #endif /* <vlc/vlc.h> */