include/vlc_spu.h

   1 /*****************************************************************************
   2  * vlc_spu.h: spu_t definition and functions.
   3  *****************************************************************************
   4  * Copyright (C) 1999-2010 VLC authors and VideoLAN
   5  * Copyright (C) 2010 Laurent Aimar
   6  * $Id$
   7  *
   8  * Authors: Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU Lesser General Public License as published by
  13  * the Free Software Foundation; either version 2.1 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * along with this program; if not, write to the Free Software Foundation,
  23  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 #ifndef VLC_SPU_H
  27 #define VLC_SPU_H 1
  28
  29 #include <vlc_subpicture.h>
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /**
  36  * \defgroup spu Sub-picture channels
  37  * \ingroup video_output
  38  * @{
  39  * \file
  40  */
  41
  42 typedef struct spu_private_t spu_private_t;
  43
  44 /* Default subpicture channel ID */
  45 #define SPU_DEFAULT_CHANNEL (1)
  46
  47 /**
  48  * Subpicture unit descriptor
  49  */
  50 struct spu_t
  51 {
  52     VLC_COMMON_MEMBERS
  53
  54     spu_private_t *p;
  55 };
  56
  57 VLC_API spu_t * spu_Create( vlc_object_t * );
  58 #define spu_Create(a) spu_Create(VLC_OBJECT(a))
  59 VLC_API void spu_Destroy( spu_t * );
  60
  61 /**
  62  * This function sends a subpicture to the spu_t core.
  63  *
  64  * You cannot use the provided subpicture anymore. The spu_t core
  65  * will destroy it at its convenience.
  66  */
  67 VLC_API void spu_PutSubpicture( spu_t *, subpicture_t * );
  68
  69 /**
  70  * This function will return an unique subpicture containing the OSD and
  71  * subtitles visibles at the requested date.
  72  *
  73  * \param p_chroma_list is a list of supported chroma for the output (can be NULL)
  74  * \param p_fmt_dst is the format of the picture on which the return subpicture will be rendered.
  75  * \param p_fmt_src is the format of the original(source) video.
  76  *
  77  * The returned value if non NULL must be released by subpicture_Delete().
  78  */
  79 VLC_API subpicture_t * spu_Render( spu_t *, const vlc_fourcc_t *p_chroma_list, const video_format_t *p_fmt_dst, const video_format_t *p_fmt_src, mtime_t render_subtitle_date, mtime_t render_osd_date, bool ignore_osd );
  80
  81 /**
  82  * It registers a new SPU channel.
  83  */
  84 VLC_API int spu_RegisterChannel( spu_t * );
  85
  86 /**
  87  * It clears all subpictures associated to a SPU channel.
  88  */
  89 VLC_API void spu_ClearChannel( spu_t *, int );
  90
  91 /**
  92  * It changes the sub sources list
  93  */
  94 VLC_API void spu_ChangeSources( spu_t *, const char * );
  95
  96 /**
  97  * It changes the sub filters list
  98  */
  99 VLC_API void spu_ChangeFilters( spu_t *, const char * );
 100
 101 /** @}*/
 102
 103 #ifdef __cplusplus
 104 }
 105 #endif
 106
 107 #endif /* VLC_SPU_H */
 108