include/vlc_image.h

   1 /*****************************************************************************
   2  * vlc_image.h : wrapper for image reading/writing facilities
   3  *****************************************************************************
   4  * Copyright (C) 2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef VLC_IMAGE_H
  25 #define VLC_IMAGE_H 1
  26
  27 # include <vlc_picture.h>
  28 # include <vlc_picture_fifo.h>
  29
  30 /**
  31  * \file
  32  * This file defines functions and structures for image conversions in vlc
  33  */
  34
  35 # ifdef __cplusplus
  36 extern "C" {
  37 # endif
  38
  39 struct image_handler_t
  40 {
  41     picture_t * (*pf_read)      ( image_handler_t *, block_t *,
  42                                   const video_format_t *, video_format_t * );
  43     picture_t * (*pf_read_url)  ( image_handler_t *, const char *,
  44                                   video_format_t *, video_format_t * );
  45     block_t * (*pf_write)       ( image_handler_t *, picture_t *,
  46                                   const video_format_t *, const video_format_t * );
  47     int (*pf_write_url)         ( image_handler_t *, picture_t *,
  48                                   const video_format_t *, video_format_t *,
  49                                   const char * );
  50
  51     picture_t * (*pf_convert)   ( image_handler_t *, picture_t *,
  52                                   const video_format_t *, video_format_t * );
  53
  54     /* Private properties */
  55     vlc_object_t *p_parent;
  56     decoder_t *p_dec;
  57     encoder_t *p_enc;
  58     filter_t  *p_filter;
  59
  60     picture_fifo_t *outfifo;
  61 };
  62
  63 VLC_API image_handler_t * image_HandlerCreate( vlc_object_t * ) VLC_USED;
  64 #define image_HandlerCreate( a ) image_HandlerCreate( VLC_OBJECT(a) )
  65 VLC_API void image_HandlerDelete( image_handler_t * );
  66
  67 #define image_Read( a, b, c, d ) a->pf_read( a, b, c, d )
  68 #define image_ReadUrl( a, b, c, d ) a->pf_read_url( a, b, c, d )
  69 #define image_Write( a, b, c, d ) a->pf_write( a, b, c, d )
  70 #define image_WriteUrl( a, b, c, d, e ) a->pf_write_url( a, b, c, d, e )
  71 #define image_Convert( a, b, c, d ) a->pf_convert( a, b, c, d )
  72
  73 VLC_API vlc_fourcc_t image_Type2Fourcc( const char *psz_name );
  74 VLC_API vlc_fourcc_t image_Ext2Fourcc( const char *psz_name );
  75 VLC_API vlc_fourcc_t image_Mime2Fourcc( const char *psz_mime );
  76
  77 # ifdef __cplusplus
  78 }
  79 # endif
  80
  81 #endif /* _VLC_IMAGE_H */