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 )
86 switch( p_filter->fmt_in.video.i_chroma )
89 p_filter->pf_video_filter = YUY2_I420_Filter;
93 p_filter->pf_video_filter = YVYU_I420_Filter;
97 p_filter->pf_video_filter = UYVY_I420_Filter;
101 p_filter->pf_video_filter = cyuv_I420_Filter;
115 /* Following functions are local */
116 VIDEO_FILTER_WRAPPER( YUY2_I420 )
117 VIDEO_FILTER_WRAPPER( YVYU_I420 )
118 VIDEO_FILTER_WRAPPER( UYVY_I420 )
119 VIDEO_FILTER_WRAPPER( cyuv_I420 )
121 /*****************************************************************************
122 * YUY2_I420: packed YUY2 4:2:2 to planar YUV 4:2:0
123 *****************************************************************************/
124 static void YUY2_I420( filter_t *p_filter, picture_t *p_source,
127 uint8_t *p_line = p_source->p->p_pixels;
129 uint8_t *p_y = p_dest->Y_PIXELS;
130 uint8_t *p_u = p_dest->U_PIXELS;
131 uint8_t *p_v = p_dest->V_PIXELS;
135 const int i_dest_margin = p_dest->p[0].i_pitch
136 - p_dest->p[0].i_visible_pitch;
137 const int i_dest_margin_c = p_dest->p[1].i_pitch
138 - p_dest->p[1].i_visible_pitch;
139 const int i_source_margin = p_source->p->i_pitch
140 - p_source->p->i_visible_pitch;
144 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
148 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
150 #define C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v ) \
151 *p_y++ = *p_line++; p_line++; \
152 *p_y++ = *p_line++; p_line++
153 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
154 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
155 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
156 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
158 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
160 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
165 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
167 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v ) \
168 *p_y++ = *p_line++; *p_u++ = *p_line++; \
169 *p_y++ = *p_line++; *p_v++ = *p_line++
170 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
171 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
172 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
173 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
175 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
177 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
180 p_line += i_source_margin;
181 p_y += i_dest_margin;
182 p_u += i_dest_margin_c;
183 p_v += i_dest_margin_c;
189 /*****************************************************************************
190 * YVYU_I420: packed YVYU 4:2:2 to planar YUV 4:2:0
191 *****************************************************************************/
192 static void YVYU_I420( filter_t *p_filter, picture_t *p_source,
195 uint8_t *p_line = p_source->p->p_pixels;
197 uint8_t *p_y = p_dest->Y_PIXELS;
198 uint8_t *p_u = p_dest->U_PIXELS;
199 uint8_t *p_v = p_dest->V_PIXELS;
203 const int i_dest_margin = p_dest->p[0].i_pitch
204 - p_dest->p[0].i_visible_pitch;
205 const int i_dest_margin_c = p_dest->p[1].i_pitch
206 - p_dest->p[1].i_visible_pitch;
207 const int i_source_margin = p_source->p->i_pitch
208 - p_source->p->i_visible_pitch;
212 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
216 for( i_x = p_filter->fmt_out.video.i_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_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_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_width % 8 ) / 2; i_x-- ; )
245 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
248 p_line += i_source_margin;
249 p_y += i_dest_margin;
250 p_u += i_dest_margin_c;
251 p_v += i_dest_margin_c;
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 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;
280 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
284 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
286 #define C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v ) \
287 *p_u++ = *p_line++; p_line++; \
288 *p_v++ = *p_line++; p_line++
289 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
290 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
291 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
292 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
294 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
296 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
301 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
303 #define C_UYVY_YUV422( p_line, p_y, p_u, p_v ) \
304 *p_u++ = *p_line++; *p_y++ = *p_line++; \
305 *p_v++ = *p_line++; *p_y++ = *p_line++
306 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
307 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
308 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
309 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
311 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
313 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
316 p_line += i_source_margin;
317 p_y += i_dest_margin;
318 p_u += i_dest_margin_c;
319 p_v += i_dest_margin_c;
325 /*****************************************************************************
326 * cyuv_I420: upside-down packed UYVY 4:2:2 to planar YUV 4:2:0
328 *****************************************************************************/
329 static void cyuv_I420( filter_t *p_filter, picture_t *p_source,
332 uint8_t *p_line = p_source->p->p_pixels;
334 uint8_t *p_y = p_dest->Y_PIXELS;
335 uint8_t *p_u = p_dest->U_PIXELS;
336 uint8_t *p_v = p_dest->V_PIXELS;
340 const int i_dest_margin = p_dest->p[0].i_pitch
341 - p_dest->p[0].i_visible_pitch;
342 const int i_dest_margin_c = p_dest->p[1].i_pitch
343 - p_dest->p[1].i_visible_pitch;
344 const int i_source_margin = p_source->p->i_pitch
345 - p_source->p->i_visible_pitch;
349 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
353 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
355 #define C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v ) \
356 *p_y++ = *p_line++; p_line++; \
357 *p_y++ = *p_line++; p_line++
358 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
359 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
360 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
361 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
363 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
365 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
370 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
372 #define C_cyuv_YUV422( p_line, p_y, p_u, p_v ) \
373 *p_y++ = *p_line++; *p_v++ = *p_line++; \
374 *p_y++ = *p_line++; *p_u++ = *p_line++
375 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
376 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
377 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
378 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
380 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
382 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
385 p_line += i_source_margin;
386 p_y += i_dest_margin;
387 p_u += i_dest_margin_c;
388 p_v += i_dest_margin_c;