1 /*****************************************************************************
2 * yuy2_i420.c : Packed YUV 4:2:2 to Planar YUV conversion module for vlc
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea at videolan dot org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_filter.h>
37 #define SRC_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422,cyuv"
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 * );
48 static void cyuv_I420 ( filter_t *, picture_t *, picture_t * );
50 static picture_t *YUY2_I420_Filter ( filter_t *, picture_t * );
51 static picture_t *YVYU_I420_Filter ( filter_t *, picture_t * );
52 static picture_t *UYVY_I420_Filter ( filter_t *, picture_t * );
53 static picture_t *cyuv_I420_Filter ( filter_t *, picture_t * );
55 /*****************************************************************************
57 *****************************************************************************/
59 set_description( N_("Conversions from " SRC_FOURCC " to " DEST_FOURCC) );
60 set_capability( "video filter2", 80 );
61 set_callbacks( Activate, NULL );
64 /*****************************************************************************
65 * Activate: allocate a chroma function
66 *****************************************************************************
67 * This function allocates and initializes a chroma function
68 *****************************************************************************/
69 static int Activate( vlc_object_t *p_this )
71 filter_t *p_filter = (filter_t *)p_this;
73 if( p_filter->fmt_in.video.i_width & 1
74 || p_filter->fmt_in.video.i_height & 1 )
79 if( p_filter->fmt_in.video.i_width != p_filter->fmt_out.video.i_width
80 || p_filter->fmt_in.video.i_height != p_filter->fmt_out.video.i_height )
83 switch( p_filter->fmt_out.video.i_chroma )
85 case VLC_FOURCC('I','4','2','0'):
86 switch( p_filter->fmt_in.video.i_chroma )
88 case VLC_FOURCC('Y','U','Y','2'):
89 case VLC_FOURCC('Y','U','N','V'):
90 p_filter->pf_video_filter = YUY2_I420_Filter;
93 case VLC_FOURCC('Y','V','Y','U'):
94 p_filter->pf_video_filter = YVYU_I420_Filter;
97 case VLC_FOURCC('U','Y','V','Y'):
98 case VLC_FOURCC('U','Y','N','V'):
99 case VLC_FOURCC('Y','4','2','2'):
100 p_filter->pf_video_filter = UYVY_I420_Filter;
103 case VLC_FOURCC('c','y','u','v'):
104 p_filter->pf_video_filter = cyuv_I420_Filter;
118 /* Following functions are local */
119 VIDEO_FILTER_WRAPPER( YUY2_I420 )
120 VIDEO_FILTER_WRAPPER( YVYU_I420 )
121 VIDEO_FILTER_WRAPPER( UYVY_I420 )
122 VIDEO_FILTER_WRAPPER( cyuv_I420 )
124 /*****************************************************************************
125 * YUY2_I420: packed YUY2 4:2:2 to planar YUV 4:2:0
126 *****************************************************************************/
127 static void YUY2_I420( filter_t *p_filter, picture_t *p_source,
130 uint8_t *p_line = p_source->p->p_pixels;
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;
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;
147 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
151 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
153 #define C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v ) \
154 *p_y++ = *p_line++; p_line++; \
155 *p_y++ = *p_line++; p_line++
156 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
157 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
158 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
159 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
161 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
163 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
168 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
170 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v ) \
171 *p_y++ = *p_line++; *p_u++ = *p_line++; \
172 *p_y++ = *p_line++; *p_v++ = *p_line++
173 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
174 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
175 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
176 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
178 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
180 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
183 p_line += i_source_margin;
184 p_y += i_dest_margin;
185 p_u += i_dest_margin_c;
186 p_v += i_dest_margin_c;
192 /*****************************************************************************
193 * YVYU_I420: packed YVYU 4:2:2 to planar YUV 4:2:0
194 *****************************************************************************/
195 static void YVYU_I420( filter_t *p_filter, picture_t *p_source,
198 uint8_t *p_line = p_source->p->p_pixels;
200 uint8_t *p_y = p_dest->Y_PIXELS;
201 uint8_t *p_u = p_dest->U_PIXELS;
202 uint8_t *p_v = p_dest->V_PIXELS;
206 const int i_dest_margin = p_dest->p[0].i_pitch
207 - p_dest->p[0].i_visible_pitch;
208 const int i_dest_margin_c = p_dest->p[1].i_pitch
209 - p_dest->p[1].i_visible_pitch;
210 const int i_source_margin = p_source->p->i_pitch
211 - p_source->p->i_visible_pitch;
215 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
219 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
221 #define C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v ) \
222 *p_y++ = *p_line++; p_line++; \
223 *p_y++ = *p_line++; p_line++
224 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
225 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
226 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
227 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
229 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
231 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
236 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
238 #define C_YVYU_YUV422( p_line, p_y, p_u, p_v ) \
239 *p_y++ = *p_line++; *p_v++ = *p_line++; \
240 *p_y++ = *p_line++; *p_u++ = *p_line++
241 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
242 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
243 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
244 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
246 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
248 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
251 p_line += i_source_margin;
252 p_y += i_dest_margin;
253 p_u += i_dest_margin_c;
254 p_v += i_dest_margin_c;
260 /*****************************************************************************
261 * UYVY_I420: packed UYVY 4:2:2 to planar YUV 4:2:0
262 *****************************************************************************/
263 static void UYVY_I420( filter_t *p_filter, picture_t *p_source,
266 uint8_t *p_line = p_source->p->p_pixels;
268 uint8_t *p_y = p_dest->Y_PIXELS;
269 uint8_t *p_u = p_dest->U_PIXELS;
270 uint8_t *p_v = p_dest->V_PIXELS;
274 const int i_dest_margin = p_dest->p[0].i_pitch
275 - p_dest->p[0].i_visible_pitch;
276 const int i_dest_margin_c = p_dest->p[1].i_pitch
277 - p_dest->p[1].i_visible_pitch;
278 const int i_source_margin = p_source->p->i_pitch
279 - p_source->p->i_visible_pitch;
283 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
287 for( i_x = p_filter->fmt_out.video.i_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_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_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_width % 8 ) / 2; i_x-- ; )
316 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
319 p_line += i_source_margin;
320 p_y += i_dest_margin;
321 p_u += i_dest_margin_c;
322 p_v += i_dest_margin_c;
328 /*****************************************************************************
329 * cyuv_I420: upside-down packed UYVY 4:2:2 to planar YUV 4:2:0
331 *****************************************************************************/
332 static void cyuv_I420( filter_t *p_filter, picture_t *p_source,
335 uint8_t *p_line = p_source->p->p_pixels;
337 uint8_t *p_y = p_dest->Y_PIXELS;
338 uint8_t *p_u = p_dest->U_PIXELS;
339 uint8_t *p_v = p_dest->V_PIXELS;
343 const int i_dest_margin = p_dest->p[0].i_pitch
344 - p_dest->p[0].i_visible_pitch;
345 const int i_dest_margin_c = p_dest->p[1].i_pitch
346 - p_dest->p[1].i_visible_pitch;
347 const int i_source_margin = p_source->p->i_pitch
348 - p_source->p->i_visible_pitch;
352 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
356 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
358 #define C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v ) \
359 *p_y++ = *p_line++; p_line++; \
360 *p_y++ = *p_line++; p_line++
361 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
362 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
363 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
364 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
366 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
368 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
373 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
375 #define C_cyuv_YUV422( p_line, p_y, p_u, p_v ) \
376 *p_y++ = *p_line++; *p_v++ = *p_line++; \
377 *p_y++ = *p_line++; *p_u++ = *p_line++
378 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
379 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
380 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
381 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
383 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
385 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
388 p_line += i_source_margin;
389 p_y += i_dest_margin;
390 p_u += i_dest_margin_c;
391 p_v += i_dest_margin_c;