modules/video_chroma/yuy2_i422.c

   1 /*****************************************************************************
   2  * yuy2_i422.c : Packed YUV 4:2:2 to Planar YUV conversion module for vlc
   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 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_plugin.h>
  34 #include <vlc_filter.h>
  35
  36 #define SRC_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422,cyuv"
  37 #define DEST_FOURCC  "I422"
  38
  39 /*****************************************************************************
  40  * Local and extern prototypes.
  41  *****************************************************************************/
  42 static int  Activate ( vlc_object_t * );
  43
  44 static void YUY2_I422           ( filter_t *, picture_t *, picture_t * );
  45 static void YVYU_I422           ( filter_t *, picture_t *, picture_t * );
  46 static void UYVY_I422           ( filter_t *, picture_t *, picture_t * );
  47 static void cyuv_I422           ( filter_t *, picture_t *, picture_t * );
  48 static picture_t *YUY2_I422_Filter    ( filter_t *, picture_t * );
  49 static picture_t *YVYU_I422_Filter    ( filter_t *, picture_t * );
  50 static picture_t *UYVY_I422_Filter    ( filter_t *, picture_t * );
  51 static picture_t *cyuv_I422_Filter    ( filter_t *, picture_t * );
  52
  53 /*****************************************************************************
  54  * Module descriptor
  55  *****************************************************************************/
  56 vlc_module_begin ()
  57     set_description( N_("Conversions from " SRC_FOURCC " to " DEST_FOURCC) )
  58     set_capability( "video filter2", 80 )
  59     set_callbacks( Activate, NULL )
  60 vlc_module_end ()
  61
  62 /*****************************************************************************
  63  * Activate: allocate a chroma function
  64  *****************************************************************************
  65  * This function allocates and initializes a chroma function
  66  *****************************************************************************/
  67 static int Activate( vlc_object_t *p_this )
  68 {
  69     filter_t *p_filter = (filter_t *)p_this;
  70
  71     if( p_filter->fmt_in.video.i_width & 1
  72      || p_filter->fmt_in.video.i_height & 1 )
  73     {
  74         return -1;
  75     }
  76
  77     if( p_filter->fmt_in.video.i_width != p_filter->fmt_out.video.i_width
  78      || p_filter->fmt_in.video.i_height != p_filter->fmt_out.video.i_height )
  79         return -1;
  80
  81     switch( p_filter->fmt_out.video.i_chroma )
  82     {
  83         case VLC_CODEC_I422:
  84             switch( p_filter->fmt_in.video.i_chroma )
  85             {
  86                 case VLC_CODEC_YUYV:
  87                     p_filter->pf_video_filter = YUY2_I422_Filter;
  88                     break;
  89
  90                 case VLC_CODEC_YVYU:
  91                     p_filter->pf_video_filter = YVYU_I422_Filter;
  92                     break;
  93
  94                 case VLC_CODEC_UYVY:
  95                     p_filter->pf_video_filter = UYVY_I422_Filter;
  96                     break;
  97
  98                 case VLC_CODEC_CYUV:
  99                     p_filter->pf_video_filter = cyuv_I422_Filter;
 100                     break;
 101
 102                 default:
 103                     return -1;
 104             }
 105             break;
 106
 107         default:
 108             return -1;
 109     }
 110     return 0;
 111 }
 112
 113 /* Following functions are local */
 114
 115 VIDEO_FILTER_WRAPPER( YUY2_I422 )
 116 VIDEO_FILTER_WRAPPER( YVYU_I422 )
 117 VIDEO_FILTER_WRAPPER( UYVY_I422 )
 118 VIDEO_FILTER_WRAPPER( cyuv_I422 )
 119
 120 /*****************************************************************************
 121  * YUY2_I422: packed YUY2 4:2:2 to planar YUV 4:2:2
 122  *****************************************************************************/
 123 static void YUY2_I422( filter_t *p_filter, picture_t *p_source,
 124                                            picture_t *p_dest )
 125 {
 126     uint8_t *p_line = p_source->p->p_pixels;
 127
 128     uint8_t *p_y = p_dest->Y_PIXELS;
 129     uint8_t *p_u = p_dest->U_PIXELS;
 130     uint8_t *p_v = p_dest->V_PIXELS;
 131
 132     int i_x, i_y;
 133
 134     const int i_dest_margin = p_dest->p[0].i_pitch
 135                                  - p_dest->p[0].i_visible_pitch;
 136     const int i_dest_margin_c = p_dest->p[1].i_pitch
 137                                  - p_dest->p[1].i_visible_pitch;
 138     const int i_source_margin = p_source->p->i_pitch
 139                                - p_source->p->i_visible_pitch;
 140
 141     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 142     {
 143         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 144         {
 145 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v )      \
 146             *p_y++ = *p_line++; *p_u++ = *p_line++; \
 147             *p_y++ = *p_line++; *p_v++ = *p_line++
 148             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 149             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 150             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 151             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 152         }
 153         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 154         {
 155             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 156         }
 157         p_line += i_source_margin;
 158         p_y += i_dest_margin;
 159         p_u += i_dest_margin_c;
 160         p_v += i_dest_margin_c;
 161     }
 162 }
 163
 164 /*****************************************************************************
 165  * YVYU_I422: packed YVYU 4:2:2 to planar YUV 4:2:2
 166  *****************************************************************************/
 167 static void YVYU_I422( filter_t *p_filter, picture_t *p_source,
 168                                            picture_t *p_dest )
 169 {
 170     uint8_t *p_line = p_source->p->p_pixels;
 171
 172     uint8_t *p_y = p_dest->Y_PIXELS;
 173     uint8_t *p_u = p_dest->U_PIXELS;
 174     uint8_t *p_v = p_dest->V_PIXELS;
 175
 176     int i_x, i_y;
 177
 178     const int i_dest_margin = p_dest->p[0].i_pitch
 179                                  - p_dest->p[0].i_visible_pitch;
 180     const int i_dest_margin_c = p_dest->p[1].i_pitch
 181                                  - p_dest->p[1].i_visible_pitch;
 182     const int i_source_margin = p_source->p->i_pitch
 183                                - p_source->p->i_visible_pitch;
 184
 185     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 186     {
 187         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 188         {
 189 #define C_YVYU_YUV422( p_line, p_y, p_u, p_v )      \
 190             *p_y++ = *p_line++; *p_v++ = *p_line++; \
 191             *p_y++ = *p_line++; *p_u++ = *p_line++
 192             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 193             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 194             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 195             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 196         }
 197         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 198         {
 199             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 200         }
 201         p_line += i_source_margin;
 202         p_y += i_dest_margin;
 203         p_u += i_dest_margin_c;
 204         p_v += i_dest_margin_c;
 205     }
 206 }
 207
 208 /*****************************************************************************
 209  * UYVY_I422: packed UYVY 4:2:2 to planar YUV 4:2:2
 210  *****************************************************************************/
 211 static void UYVY_I422( filter_t *p_filter, picture_t *p_source,
 212                                            picture_t *p_dest )
 213 {
 214     uint8_t *p_line = p_source->p->p_pixels;
 215
 216     uint8_t *p_y = p_dest->Y_PIXELS;
 217     uint8_t *p_u = p_dest->U_PIXELS;
 218     uint8_t *p_v = p_dest->V_PIXELS;
 219
 220     int i_x, i_y;
 221
 222     const int i_dest_margin = p_dest->p[0].i_pitch
 223                                  - p_dest->p[0].i_visible_pitch;
 224     const int i_dest_margin_c = p_dest->p[1].i_pitch
 225                                  - p_dest->p[1].i_visible_pitch;
 226     const int i_source_margin = p_source->p->i_pitch
 227                                - p_source->p->i_visible_pitch;
 228
 229     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 230     {
 231         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 232         {
 233 #define C_UYVY_YUV422( p_line, p_y, p_u, p_v )      \
 234             *p_u++ = *p_line++; *p_y++ = *p_line++; \
 235             *p_v++ = *p_line++; *p_y++ = *p_line++
 236             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 237             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 238             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 239             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 240         }
 241         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 242         {
 243             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 244         }
 245         p_line += i_source_margin;
 246         p_y += i_dest_margin;
 247         p_u += i_dest_margin_c;
 248         p_v += i_dest_margin_c;
 249     }
 250 }
 251
 252 /*****************************************************************************
 253  * cyuv_I422: upside-down packed UYVY 4:2:2 to planar YUV 4:2:2
 254  * FIXME
 255  *****************************************************************************/
 256 static void cyuv_I422( filter_t *p_filter, picture_t *p_source,
 257                                            picture_t *p_dest )
 258 {
 259     uint8_t *p_line = p_source->p->p_pixels;
 260
 261     uint8_t *p_y = p_dest->Y_PIXELS;
 262     uint8_t *p_u = p_dest->U_PIXELS;
 263     uint8_t *p_v = p_dest->V_PIXELS;
 264
 265     int i_x, i_y;
 266
 267     const int i_dest_margin = p_dest->p[0].i_pitch
 268                                  - p_dest->p[0].i_visible_pitch;
 269     const int i_dest_margin_c = p_dest->p[1].i_pitch
 270                                  - p_dest->p[1].i_visible_pitch;
 271     const int i_source_margin = p_source->p->i_pitch
 272                                - p_source->p->i_visible_pitch;
 273
 274     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 275     {
 276         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 277         {
 278 #define C_cyuv_YUV422( p_line, p_y, p_u, p_v )      \
 279             *p_y++ = *p_line++; *p_v++ = *p_line++; \
 280             *p_y++ = *p_line++; *p_u++ = *p_line++
 281             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 282             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 283             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 284             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 285         }
 286         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 287         {
 288             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 289         }
 290         p_line += i_source_margin;
 291         p_y += i_dest_margin;
 292         p_u += i_dest_margin_c;
 293         p_v += i_dest_margin_c;
 294     }
 295 }