modules/video_filter/filter_picture.h

   1 /*****************************************************************************
   2  * filter_picture.h: Common picture functions for filters
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea at videolan dot 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /* FIXME: do all of these really have square pixels? */
  25 #define CASE_PLANAR_YUV_SQUARE              \
  26         case VLC_CODEC_I420:   \
  27         case VLC_CODEC_J420:   \
  28         case VLC_CODEC_YV12:   \
  29         case VLC_CODEC_I411:   \
  30         case VLC_CODEC_I410:   \
  31         case VLC_CODEC_I444:   \
  32         case VLC_CODEC_J444:   \
  33         case VLC_CODEC_YUVA:
  34
  35 #define CASE_PLANAR_YUV_NONSQUARE           \
  36         case VLC_CODEC_I422:   \
  37         case VLC_CODEC_J422:
  38
  39 #define CASE_PLANAR_YUV                     \
  40         CASE_PLANAR_YUV_SQUARE              \
  41         CASE_PLANAR_YUV_NONSQUARE           \
  42
  43 #define CASE_PACKED_YUV_422                 \
  44         case VLC_CODEC_UYVY:   \
  45         case VLC_CODEC_CYUV:   \
  46         case VLC_CODEC_YUYV:   \
  47         case VLC_CODEC_YVYU:
  48
  49 static inline int GetPackedYuvOffsets( vlc_fourcc_t i_chroma,
  50     int *i_y_offset, int *i_u_offset, int *i_v_offset )
  51 {
  52     switch( i_chroma )
  53     {
  54         case VLC_CODEC_UYVY:
  55         case VLC_CODEC_CYUV: /* <-- FIXME: reverted, whatever that means */
  56             /* UYVY */
  57             *i_y_offset = 1;
  58             *i_u_offset = 0;
  59             *i_v_offset = 2;
  60             return VLC_SUCCESS;
  61         case VLC_CODEC_YUYV:
  62             /* YUYV */
  63             *i_y_offset = 0;
  64             *i_u_offset = 1;
  65             *i_v_offset = 3;
  66             return VLC_SUCCESS;
  67         case VLC_CODEC_YVYU:
  68             /* YVYU */
  69             *i_y_offset = 0;
  70             *i_u_offset = 3;
  71             *i_v_offset = 1;
  72             return VLC_SUCCESS;
  73         default:
  74             return VLC_EGENERIC;
  75     }
  76 }
  77
  78 /*****************************************************************************
  79  *
  80  *****************************************************************************/
  81 static inline picture_t *CopyInfoAndRelease( picture_t *p_outpic, picture_t *p_inpic )
  82 {
  83     picture_CopyProperties( p_outpic, p_inpic );
  84
  85     picture_Release( p_inpic );
  86
  87     return p_outpic;
  88 }