git.sesse.net Git - vlc/blob - 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 #include <vlc_vout.h>
  36
  37 #define SRC_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422,cyuv"
  38 #define DEST_FOURCC  "I422"
  39
  40 /*****************************************************************************
  41  * Local and extern prototypes.
  42  *****************************************************************************/
  43 static int  Activate ( vlc_object_t * );
  44
  45 static void YUY2_I422           ( filter_t *, picture_t *, picture_t * );
  46 static void YVYU_I422           ( filter_t *, picture_t *, picture_t * );
  47 static void UYVY_I422           ( filter_t *, picture_t *, picture_t * );
  48 static void cyuv_I422           ( filter_t *, picture_t *, picture_t * );
  49 static picture_t *YUY2_I422_Filter    ( filter_t *, picture_t * );
  50 static picture_t *YVYU_I422_Filter    ( filter_t *, picture_t * );
  51 static picture_t *UYVY_I422_Filter    ( filter_t *, picture_t * );
  52 static picture_t *cyuv_I422_Filter    ( filter_t *, picture_t * );
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************/
  57 vlc_module_begin ()
  58     set_description( N_("Conversions from " SRC_FOURCC " to " DEST_FOURCC) )
  59     set_capability( "video filter2", 80 )
  60     set_callbacks( Activate, NULL )
  61 vlc_module_end ()
  62
  63 /*****************************************************************************
  64  * Activate: allocate a chroma function
  65  *****************************************************************************
  66  * This function allocates and initializes a chroma function
  67  *****************************************************************************/
  68 static int Activate( vlc_object_t *p_this )
  69 {
  70     filter_t *p_filter = (filter_t *)p_this;
  71
  72     if( p_filter->fmt_in.video.i_width & 1
  73      || p_filter->fmt_in.video.i_height & 1 )
  74     {
  75         return -1;
  76     }
  77
  78     if( p_filter->fmt_in.video.i_width != p_filter->fmt_out.video.i_width
  79      || p_filter->fmt_in.video.i_height != p_filter->fmt_out.video.i_height )
  80         return -1;
  81
  82     switch( p_filter->fmt_out.video.i_chroma )
  83     {
  84         case VLC_FOURCC('I','4','2','2'):
  85             switch( p_filter->fmt_in.video.i_chroma )
  86             {
  87                 case VLC_FOURCC('Y','U','Y','2'):
  88                 case VLC_FOURCC('Y','U','N','V'):
  89                     p_filter->pf_video_filter = YUY2_I422_Filter;
  90                     break;
  91
  92                 case VLC_FOURCC('Y','V','Y','U'):
  93                     p_filter->pf_video_filter = YVYU_I422_Filter;
  94                     break;
  95
  96                 case VLC_FOURCC('U','Y','V','Y'):
  97                 case VLC_FOURCC('U','Y','N','V'):
  98                 case VLC_FOURCC('Y','4','2','2'):
  99                     p_filter->pf_video_filter = UYVY_I422_Filter;
 100                     break;
 101
 102                 case VLC_FOURCC('c','y','u','v'):
 103                     p_filter->pf_video_filter = cyuv_I422_Filter;
 104                     break;
 105
 106                 default:
 107                     return -1;
 108             }
 109             break;
 110
 111         default:
 112             return -1;
 113     }
 114     return 0;
 115 }
 116
 117 /* Following functions are local */
 118
 119 VIDEO_FILTER_WRAPPER( YUY2_I422 )
 120 VIDEO_FILTER_WRAPPER( YVYU_I422 )
 121 VIDEO_FILTER_WRAPPER( UYVY_I422 )
 122 VIDEO_FILTER_WRAPPER( cyuv_I422 )
 123
 124 /*****************************************************************************
 125  * YUY2_I422: packed YUY2 4:2:2 to planar YUV 4:2:2
 126  *****************************************************************************/
 127 static void YUY2_I422( filter_t *p_filter, picture_t *p_source,
 128                                            picture_t *p_dest )
 129 {
 130     uint8_t *p_line = p_source->p->p_pixels;
 131
 132     uint8_t *p_y = p_dest->Y_PIXELS;
 133     uint8_t *p_u = p_dest->U_PIXELS;
 134     uint8_t *p_v = p_dest->V_PIXELS;
 135
 136     int i_x, i_y;
 137
 138     const int i_dest_margin = p_dest->p[0].i_pitch
 139                                  - p_dest->p[0].i_visible_pitch;
 140     const int i_dest_margin_c = p_dest->p[1].i_pitch
 141                                  - p_dest->p[1].i_visible_pitch;
 142     const int i_source_margin = p_source->p->i_pitch
 143                                - p_source->p->i_visible_pitch;
 144
 145     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 146     {
 147         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 148         {
 149 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v )      \
 150             *p_y++ = *p_line++; *p_u++ = *p_line++; \
 151             *p_y++ = *p_line++; *p_v++ = *p_line++
 152             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 153             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 154             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 155             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 156         }
 157         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 158         {
 159             C_YUYV_YUV422( p_line, p_y, p_u, p_v );
 160         }
 161         p_line += i_source_margin;
 162         p_y += i_dest_margin;
 163         p_u += i_dest_margin_c;
 164         p_v += i_dest_margin_c;
 165     }
 166 }
 167
 168 /*****************************************************************************
 169  * YVYU_I422: packed YVYU 4:2:2 to planar YUV 4:2:2
 170  *****************************************************************************/
 171 static void YVYU_I422( filter_t *p_filter, picture_t *p_source,
 172                                            picture_t *p_dest )
 173 {
 174     uint8_t *p_line = p_source->p->p_pixels;
 175
 176     uint8_t *p_y = p_dest->Y_PIXELS;
 177     uint8_t *p_u = p_dest->U_PIXELS;
 178     uint8_t *p_v = p_dest->V_PIXELS;
 179
 180     int i_x, i_y;
 181
 182     const int i_dest_margin = p_dest->p[0].i_pitch
 183                                  - p_dest->p[0].i_visible_pitch;
 184     const int i_dest_margin_c = p_dest->p[1].i_pitch
 185                                  - p_dest->p[1].i_visible_pitch;
 186     const int i_source_margin = p_source->p->i_pitch
 187                                - p_source->p->i_visible_pitch;
 188
 189     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 190     {
 191         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 192         {
 193 #define C_YVYU_YUV422( p_line, p_y, p_u, p_v )      \
 194             *p_y++ = *p_line++; *p_v++ = *p_line++; \
 195             *p_y++ = *p_line++; *p_u++ = *p_line++
 196             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 197             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 198             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 199             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 200         }
 201         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 202         {
 203             C_YVYU_YUV422( p_line, p_y, p_u, p_v );
 204         }
 205         p_line += i_source_margin;
 206         p_y += i_dest_margin;
 207         p_u += i_dest_margin_c;
 208         p_v += i_dest_margin_c;
 209     }
 210 }
 211
 212 /*****************************************************************************
 213  * UYVY_I422: packed UYVY 4:2:2 to planar YUV 4:2:2
 214  *****************************************************************************/
 215 static void UYVY_I422( filter_t *p_filter, picture_t *p_source,
 216                                            picture_t *p_dest )
 217 {
 218     uint8_t *p_line = p_source->p->p_pixels;
 219
 220     uint8_t *p_y = p_dest->Y_PIXELS;
 221     uint8_t *p_u = p_dest->U_PIXELS;
 222     uint8_t *p_v = p_dest->V_PIXELS;
 223
 224     int i_x, i_y;
 225
 226     const int i_dest_margin = p_dest->p[0].i_pitch
 227                                  - p_dest->p[0].i_visible_pitch;
 228     const int i_dest_margin_c = p_dest->p[1].i_pitch
 229                                  - p_dest->p[1].i_visible_pitch;
 230     const int i_source_margin = p_source->p->i_pitch
 231                                - p_source->p->i_visible_pitch;
 232
 233     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 234     {
 235         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 236         {
 237 #define C_UYVY_YUV422( p_line, p_y, p_u, p_v )      \
 238             *p_u++ = *p_line++; *p_y++ = *p_line++; \
 239             *p_v++ = *p_line++; *p_y++ = *p_line++
 240             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 241             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 242             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 243             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 244         }
 245         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 246         {
 247             C_UYVY_YUV422( p_line, p_y, p_u, p_v );
 248         }
 249         p_line += i_source_margin;
 250         p_y += i_dest_margin;
 251         p_u += i_dest_margin_c;
 252         p_v += i_dest_margin_c;
 253     }
 254 }
 255
 256 /*****************************************************************************
 257  * cyuv_I422: upside-down packed UYVY 4:2:2 to planar YUV 4:2:2
 258  * FIXME
 259  *****************************************************************************/
 260 static void cyuv_I422( filter_t *p_filter, picture_t *p_source,
 261                                            picture_t *p_dest )
 262 {
 263     uint8_t *p_line = p_source->p->p_pixels;
 264
 265     uint8_t *p_y = p_dest->Y_PIXELS;
 266     uint8_t *p_u = p_dest->U_PIXELS;
 267     uint8_t *p_v = p_dest->V_PIXELS;
 268
 269     int i_x, i_y;
 270
 271     const int i_dest_margin = p_dest->p[0].i_pitch
 272                                  - p_dest->p[0].i_visible_pitch;
 273     const int i_dest_margin_c = p_dest->p[1].i_pitch
 274                                  - p_dest->p[1].i_visible_pitch;
 275     const int i_source_margin = p_source->p->i_pitch
 276                                - p_source->p->i_visible_pitch;
 277
 278     for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
 279     {
 280         for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
 281         {
 282 #define C_cyuv_YUV422( p_line, p_y, p_u, p_v )      \
 283             *p_y++ = *p_line++; *p_v++ = *p_line++; \
 284             *p_y++ = *p_line++; *p_u++ = *p_line++
 285             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 286             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 287             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 288             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 289         }
 290         for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
 291         {
 292             C_cyuv_YUV422( p_line, p_y, p_u, p_v );
 293         }
 294         p_line += i_source_margin;
 295         p_y += i_dest_margin;
 296         p_u += i_dest_margin_c;
 297         p_v += i_dest_margin_c;
 298     }
 299 }