1 /*****************************************************************************
2 * yuy2_i420.c : Packed YUV 4:2:2 to Planar YUV conversion module for vlc
3 *****************************************************************************
4 * Copyright (C) 2007 VLC authors and VideoLAN
7 * Authors: Antoine Cellerier <dionoea at videolan dot org>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_filter.h>
35 #include <vlc_picture.h>
37 #define SRC_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422"
38 #define DEST_FOURCC "I420"
40 /*****************************************************************************
41 * Local and extern prototypes.
42 *****************************************************************************/
43 static int Activate ( vlc_object_t
* );
45 static void YUY2_I420 ( filter_t
*, picture_t
*, picture_t
* );
46 static void YVYU_I420 ( filter_t
*, picture_t
*, picture_t
* );
47 static void UYVY_I420 ( filter_t
*, picture_t
*, picture_t
* );
49 static picture_t
*YUY2_I420_Filter ( filter_t
*, picture_t
* );
50 static picture_t
*YVYU_I420_Filter ( filter_t
*, picture_t
* );
51 static picture_t
*UYVY_I420_Filter ( filter_t
*, picture_t
* );
53 /*****************************************************************************
55 *****************************************************************************/
57 set_description( N_("Conversions from " SRC_FOURCC
" to " DEST_FOURCC
) )
58 set_capability( "video converter", 80 )
59 set_callbacks( Activate
, NULL
)
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
)
69 filter_t
*p_filter
= (filter_t
*)p_this
;
71 if( p_filter
->fmt_in
.video
.i_width
& 1
72 || p_filter
->fmt_in
.video
.i_height
& 1 )
77 if( p_filter
->fmt_in
.video
.i_width
!= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
)
78 || p_filter
->fmt_in
.video
.i_height
!= (p_filter
->fmt_out
.video
.i_y_offset
+ p_filter
->fmt_out
.video
.i_visible_height
)
79 || p_filter
->fmt_in
.video
.orientation
!= p_filter
->fmt_out
.video
.orientation
)
82 switch( p_filter
->fmt_out
.video
.i_chroma
)
85 switch( p_filter
->fmt_in
.video
.i_chroma
)
88 p_filter
->pf_video_filter
= YUY2_I420_Filter
;
92 p_filter
->pf_video_filter
= YVYU_I420_Filter
;
96 p_filter
->pf_video_filter
= UYVY_I420_Filter
;
110 /* Following functions are local */
111 VIDEO_FILTER_WRAPPER( YUY2_I420
)
112 VIDEO_FILTER_WRAPPER( YVYU_I420
)
113 VIDEO_FILTER_WRAPPER( UYVY_I420
)
115 /*****************************************************************************
116 * YUY2_I420: packed YUY2 4:2:2 to planar YUV 4:2:0
117 *****************************************************************************/
118 static void YUY2_I420( filter_t
*p_filter
, picture_t
*p_source
,
121 uint8_t *p_line
= p_source
->p
->p_pixels
;
123 uint8_t *p_y
= p_dest
->Y_PIXELS
;
124 uint8_t *p_u
= p_dest
->U_PIXELS
;
125 uint8_t *p_v
= p_dest
->V_PIXELS
;
129 const int i_dest_margin
= p_dest
->p
[0].i_pitch
130 - p_dest
->p
[0].i_visible_pitch
131 - p_filter
->fmt_out
.video
.i_x_offset
;
132 const int i_dest_margin_c
= p_dest
->p
[1].i_pitch
133 - p_dest
->p
[1].i_visible_pitch
134 - ( p_filter
->fmt_out
.video
.i_x_offset
/ 2 );
135 const int i_source_margin
= p_source
->p
->i_pitch
136 - p_source
->p
->i_visible_pitch
137 - ( p_filter
->fmt_in
.video
.i_x_offset
* 2 );
141 for( i_y
= (p_filter
->fmt_out
.video
.i_y_offset
+ p_filter
->fmt_out
.video
.i_visible_height
) ; i_y
-- ; )
145 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
147 #define C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v ) \
148 *p_y++ = *p_line++; p_line++; \
149 *p_y++ = *p_line++; p_line++
150 C_YUYV_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
151 C_YUYV_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
152 C_YUYV_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
153 C_YUYV_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
155 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
157 C_YUYV_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
162 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
164 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v ) \
165 *p_y++ = *p_line++; *p_u++ = *p_line++; \
166 *p_y++ = *p_line++; *p_v++ = *p_line++
167 C_YUYV_YUV422( p_line
, p_y
, p_u
, p_v
);
168 C_YUYV_YUV422( p_line
, p_y
, p_u
, p_v
);
169 C_YUYV_YUV422( p_line
, p_y
, p_u
, p_v
);
170 C_YUYV_YUV422( p_line
, p_y
, p_u
, p_v
);
172 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
174 C_YUYV_YUV422( p_line
, p_y
, p_u
, p_v
);
176 p_u
+= i_dest_margin_c
;
177 p_v
+= i_dest_margin_c
;
179 p_line
+= i_source_margin
;
180 p_y
+= i_dest_margin
;
186 /*****************************************************************************
187 * YVYU_I420: packed YVYU 4:2:2 to planar YUV 4:2:0
188 *****************************************************************************/
189 static void YVYU_I420( filter_t
*p_filter
, picture_t
*p_source
,
192 uint8_t *p_line
= p_source
->p
->p_pixels
;
194 uint8_t *p_y
= p_dest
->Y_PIXELS
;
195 uint8_t *p_u
= p_dest
->U_PIXELS
;
196 uint8_t *p_v
= p_dest
->V_PIXELS
;
200 const int i_dest_margin
= p_dest
->p
[0].i_pitch
201 - p_dest
->p
[0].i_visible_pitch
202 - p_filter
->fmt_out
.video
.i_x_offset
;
203 const int i_dest_margin_c
= p_dest
->p
[1].i_pitch
204 - p_dest
->p
[1].i_visible_pitch
205 - ( p_filter
->fmt_out
.video
.i_x_offset
/ 2 );
206 const int i_source_margin
= p_source
->p
->i_pitch
207 - p_source
->p
->i_visible_pitch
208 - ( p_filter
->fmt_in
.video
.i_x_offset
* 2 );
212 for( i_y
= (p_filter
->fmt_out
.video
.i_y_offset
+ p_filter
->fmt_out
.video
.i_visible_height
) ; i_y
-- ; )
216 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
218 #define C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v ) \
219 *p_y++ = *p_line++; p_line++; \
220 *p_y++ = *p_line++; p_line++
221 C_YVYU_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
222 C_YVYU_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
223 C_YVYU_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
224 C_YVYU_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
226 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
228 C_YVYU_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
233 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
235 #define C_YVYU_YUV422( p_line, p_y, p_u, p_v ) \
236 *p_y++ = *p_line++; *p_v++ = *p_line++; \
237 *p_y++ = *p_line++; *p_u++ = *p_line++
238 C_YVYU_YUV422( p_line
, p_y
, p_u
, p_v
);
239 C_YVYU_YUV422( p_line
, p_y
, p_u
, p_v
);
240 C_YVYU_YUV422( p_line
, p_y
, p_u
, p_v
);
241 C_YVYU_YUV422( p_line
, p_y
, p_u
, p_v
);
243 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
245 C_YVYU_YUV422( p_line
, p_y
, p_u
, p_v
);
247 p_u
+= i_dest_margin_c
;
248 p_v
+= i_dest_margin_c
;
250 p_line
+= i_source_margin
;
251 p_y
+= i_dest_margin
;
257 /*****************************************************************************
258 * UYVY_I420: packed UYVY 4:2:2 to planar YUV 4:2:0
259 *****************************************************************************/
260 static void UYVY_I420( filter_t
*p_filter
, picture_t
*p_source
,
263 uint8_t *p_line
= p_source
->p
->p_pixels
;
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
;
271 const int i_dest_margin
= p_dest
->p
[0].i_pitch
272 - p_dest
->p
[0].i_visible_pitch
273 - p_filter
->fmt_out
.video
.i_x_offset
;
274 const int i_dest_margin_c
= p_dest
->p
[1].i_pitch
275 - p_dest
->p
[1].i_visible_pitch
276 - ( p_filter
->fmt_out
.video
.i_x_offset
/ 2 );
277 const int i_source_margin
= p_source
->p
->i_pitch
278 - p_source
->p
->i_visible_pitch
279 - ( p_filter
->fmt_in
.video
.i_x_offset
* 2 );
283 for( i_y
= (p_filter
->fmt_out
.video
.i_y_offset
+ p_filter
->fmt_out
.video
.i_visible_height
) ; i_y
-- ; )
287 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
289 #define C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v ) \
290 *p_u++ = *p_line++; p_line++; \
291 *p_v++ = *p_line++; p_line++
292 C_UYVY_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
293 C_UYVY_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
294 C_UYVY_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
295 C_UYVY_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
297 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
299 C_UYVY_YUV422_skip( p_line
, p_y
, p_u
, p_v
);
304 for( i_x
= (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) / 8 ; i_x
-- ; )
306 #define C_UYVY_YUV422( p_line, p_y, p_u, p_v ) \
307 *p_u++ = *p_line++; *p_y++ = *p_line++; \
308 *p_v++ = *p_line++; *p_y++ = *p_line++
309 C_UYVY_YUV422( p_line
, p_y
, p_u
, p_v
);
310 C_UYVY_YUV422( p_line
, p_y
, p_u
, p_v
);
311 C_UYVY_YUV422( p_line
, p_y
, p_u
, p_v
);
312 C_UYVY_YUV422( p_line
, p_y
, p_u
, p_v
);
314 for( i_x
= ( (p_filter
->fmt_out
.video
.i_x_offset
+ p_filter
->fmt_out
.video
.i_visible_width
) % 8 ) / 2; i_x
-- ; )
316 C_UYVY_YUV422( p_line
, p_y
, p_u
, p_v
);
318 p_y
+= i_dest_margin
;
320 p_line
+= i_source_margin
;
321 p_u
+= i_dest_margin_c
;
322 p_v
+= i_dest_margin_c
;