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