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