git.sesse.net Git - vlc/blob - modules/video_filter/filter_common.h

   1 /*****************************************************************************
   2  * filter_common.h: Common filter functions
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002, 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 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 General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #define ALLOCATE_DIRECTBUFFERS( i_max ) \
  25     /* Try to initialize i_max direct buffers */                              \
  26     while( I_OUTPUTPICTURES < ( i_max ) )                                     \
  27     {                                                                         \
  28         p_pic = NULL;                                                         \
  29                                                                               \
  30         /* Find an empty picture slot */                                      \
  31         for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )          \
  32         {                                                                     \
  33             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )       \
  34             {                                                                 \
  35                 p_pic = p_vout->p_picture + i_index;                          \
  36                 break;                                                        \
  37             }                                                                 \
  38         }                                                                     \
  39                                                                               \
  40         if( p_pic == NULL )                                                   \
  41         {                                                                     \
  42             break;                                                            \
  43         }                                                                     \
  44                                                                               \
  45         /* Allocate the picture */                                            \
  46         vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma, \
  47                               p_vout->output.i_width,                         \
  48                               p_vout->output.i_height,                        \
  49                               p_vout->output.i_aspect );                      \
  50                                                                               \
  51         if( !p_pic->i_planes )                                                \
  52         {                                                                     \
  53             break;                                                            \
  54         }                                                                     \
  55                                                                               \
  56         p_pic->i_status = DESTROYED_PICTURE;                                  \
  57         p_pic->i_type   = DIRECT_PICTURE;                                     \
  58                                                                               \
  59         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;                         \
  60                                                                               \
  61         I_OUTPUTPICTURES++;                                                   \
  62     }                                                                         \
  63
  64 /*****************************************************************************
  65  * SetParentVal: forward variable value to parent whithout triggering the
  66  *               callback
  67  *****************************************************************************/
  68 static int SetParentVal( vlc_object_t *p_this, char const *psz_var,
  69                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
  70 {
  71     var_Change( (vlc_object_t *)p_data, psz_var, VLC_VAR_SETVALUE,
  72                  &newval, NULL );
  73     return VLC_SUCCESS;
  74 }
  75
  76 #define ADD_CALLBACKS( newvout, handler ) \
  77     var_AddCallback( newvout, "fullscreen", SetParentVal, p_vout );           \
  78     var_AddCallback( newvout, "mouse-x", SendEvents, p_vout );                \
  79     var_AddCallback( newvout, "mouse-y", SendEvents, p_vout );                \
  80     var_AddCallback( newvout, "mouse-moved", SendEvents, p_vout );            \
  81     var_AddCallback( newvout, "mouse-clicked", SendEvents, p_vout );
  82
  83 #define DEL_CALLBACKS( newvout, handler ) \
  84     var_DelCallback( newvout, "fullscreen", SetParentVal, p_vout );           \
  85     var_DelCallback( newvout, "mouse-x", SendEvents, p_vout );                \
  86     var_DelCallback( newvout, "mouse-y", SendEvents, p_vout );                \
  87     var_DelCallback( newvout, "mouse-moved", SendEvents, p_vout );            \
  88     var_DelCallback( newvout, "mouse-clicked", SendEvents, p_vout );
  89
  90 #define ADD_PARENT_CALLBACKS( handler ) \
  91     var_AddCallback( p_vout, "fullscreen", handler, NULL );                   \
  92     var_AddCallback( p_vout, "aspect-ratio", handler, NULL );                 \
  93     var_AddCallback( p_vout, "crop", handler, NULL );
  94
  95 #define DEL_PARENT_CALLBACKS( handler ) \
  96     var_DelCallback( p_vout, "fullscreen", handler, NULL );                   \
  97     var_DelCallback( p_vout, "aspect-ratio", handler, NULL );                 \
  98     var_DelCallback( p_vout, "crop", handler, NULL );
  99
 100 static int  SendEventsToChild( vlc_object_t *, char const *,
 101                                vlc_value_t, vlc_value_t, void * );