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- /*****************************************************************************
- * vlc_subpicture.h: subpicture definitions
- *****************************************************************************
- * Copyright (C) 1999 - 2009 the VideoLAN team
- * $Id: 23fdaaca18a8fd09d84122e4c2b9c048401f4188 $
- *
- * Authors: Vincent Seguin <seguin@via.ecp.fr>
- * Samuel Hocevar <sam@via.ecp.fr>
- * Olivier Aubert <oaubert 47 videolan d07 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 VLC_SUBPICTURE_H
- #define VLC_SUBPICTURE_H 1
-
- /**
- * \file
- * This file defines subpicture structures and functions in vlc
- */
-
- #include <vlc_picture.h>
-
- /**
- * \defgroup subpicture Video Subpictures
- * Subpictures are pictures that should be displayed on top of the video, like
- * subtitles and OSD
- * \ingroup video_output
- * @{
- */
-
- /**
- * Video subtitle region spu core private
- */
- typedef struct subpicture_region_private_t subpicture_region_private_t;
-
- /**
- * Video subtitle region
- *
- * A subtitle region is defined by a picture (graphic) and its rendering
- * coordinates.
- * Subtitles contain a list of regions.
- */
- struct subpicture_region_t
- {
- video_format_t fmt; /**< format of the picture */
- picture_t *p_picture; /**< picture comprising this region */
-
- int i_x; /**< position of region */
- int i_y; /**< position of region */
- int i_align; /**< alignment within a region */
- int i_alpha; /**< transparency */
-
- char *psz_text; /**< text string comprising this region */
- char *psz_html; /**< HTML version of subtitle (NULL = use psz_text) */
- text_style_t *p_style; /**< a description of the text style formatting */
-
- subpicture_region_t *p_next; /**< next region in the list */
- subpicture_region_private_t *p_private; /**< Private data for spu_t *only* */
- };
-
- /* Subpicture region position flags */
- #define SUBPICTURE_ALIGN_LEFT 0x1
- #define SUBPICTURE_ALIGN_RIGHT 0x2
- #define SUBPICTURE_ALIGN_TOP 0x4
- #define SUBPICTURE_ALIGN_BOTTOM 0x8
- #define SUBPICTURE_ALIGN_MASK ( SUBPICTURE_ALIGN_LEFT|SUBPICTURE_ALIGN_RIGHT| \
- SUBPICTURE_ALIGN_TOP |SUBPICTURE_ALIGN_BOTTOM )
-
- /**
- * This function will create a new subpicture region.
- *
- * You must use subpicture_region_Delete to destroy it.
- */
- VLC_EXPORT( subpicture_region_t *, subpicture_region_New, ( const video_format_t *p_fmt ) );
-
- /**
- * This function will destroy a subpicture region allocated by
- * subpicture_region_New.
- *
- * You may give it NULL.
- */
- VLC_EXPORT( void, subpicture_region_Delete, ( subpicture_region_t *p_region ) );
-
- /**
- * This function will destroy a list of subpicture regions allocated by
- * subpicture_region_New.
- *
- * Provided for convenience.
- */
- VLC_EXPORT( void, subpicture_region_ChainDelete, ( subpicture_region_t *p_head ) );
-
- /**
- * Video subtitle
- *
- * Any subtitle destined to be displayed by a video output thread should
- * be stored in this structure from it's creation to it's effective display.
- * Subtitle type and flags should only be modified by the output thread. Note
- * that an empty subtitle MUST have its flags set to 0.
- */
- struct subpicture_t
- {
- /** \name Channel ID */
- /**@{*/
- int i_channel; /**< subpicture channel ID */
- /**@}*/
-
- /** \name Type and flags
- Should NOT be modified except by the vout thread */
- /**@{*/
- int64_t i_order; /** an increasing unique number */
- subpicture_t * p_next; /**< next subtitle to be displayed */
- /**@}*/
-
- subpicture_region_t *p_region; /**< region list composing this subtitle */
-
- /** \name Date properties */
- /**@{*/
- mtime_t i_start; /**< beginning of display date */
- mtime_t i_stop; /**< end of display date */
- bool b_ephemer; /**< If this flag is set to true the subtitle
- will be displayed untill the next one appear */
- bool b_fade; /**< enable fading */
- /**@}*/
-
- /** \name Display properties
- * These properties are only indicative and may be
- * changed by the video output thread, or simply ignored depending of the
- * subtitle type. */
- /**@{*/
- bool b_subtitle; /**< the picture is a movie subtitle */
- bool b_absolute; /**< position is absolute */
- int i_original_picture_width; /**< original width of the movie */
- int i_original_picture_height;/**< original height of the movie */
- int i_alpha; /**< transparency */
- /**@}*/
-
- /** Pointer to function that cleans up the private data of this subtitle */
- void ( *pf_destroy ) ( subpicture_t * );
-
- /** Pointer to function that update the regions before rendering (optionnal) */
- void (*pf_update_regions)( spu_t *,
- subpicture_t *, const video_format_t *, mtime_t );
-
- /** Private data - the subtitle plugin might want to put stuff here to
- * keep track of the subpicture */
- subpicture_sys_t *p_sys; /* subpicture data */
- };
-
-
- /**
- * This function create a new empty subpicture.
- *
- * You must use subpicture_Delete to destroy it.
- */
- VLC_EXPORT( subpicture_t *, subpicture_New, ( void ) );
-
- /**
- * This function delete a subpicture created by subpicture_New.
- * You may give it NULL.
- */
- VLC_EXPORT( void, subpicture_Delete, ( subpicture_t *p_subpic ) );
-
- /**
- * This function will create a subpicture having one region in the requested
- * chroma showing the given picture.
- *
- * The picture_t given is not released nor used inside the
- * returned subpicture_t.
- */
- VLC_EXPORT( subpicture_t *, subpicture_NewFromPicture, ( vlc_object_t *, picture_t *, vlc_fourcc_t i_chroma ) );
-
- /**@}*/
-
- #endif /* _VLC_VIDEO_H */
-