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 /*****************************************************************************
52 *****************************************************************************/
54 set_description( N_("Conversions from " SRC_FOURCC " to " DEST_FOURCC) );
55 set_capability( "chroma", 80 );
56 set_callbacks( Activate, NULL );
59 /*****************************************************************************
60 * Activate: allocate a chroma function
61 *****************************************************************************
62 * This function allocates and initializes a chroma function
63 *****************************************************************************/
64 static int Activate( vlc_object_t *p_this )
66 filter_t *p_filter = (filter_t *)p_this;
68 if( p_filter->fmt_in.video.i_width & 1
69 || p_filter->fmt_in.video.i_height & 1 )
74 switch( p_filter->fmt_out.video.i_chroma )
76 case VLC_FOURCC('I','4','2','0'):
77 switch( p_filter->fmt_in.video.i_chroma )
79 case VLC_FOURCC('Y','U','Y','2'):
80 case VLC_FOURCC('Y','U','N','V'):
81 p_filter->pf_video_filter_io = YUY2_I420;
84 case VLC_FOURCC('Y','V','Y','U'):
85 p_filter->pf_video_filter_io = YVYU_I420;
88 case VLC_FOURCC('U','Y','V','Y'):
89 case VLC_FOURCC('U','Y','N','V'):
90 case VLC_FOURCC('Y','4','2','2'):
91 p_filter->pf_video_filter_io = UYVY_I420;
94 case VLC_FOURCC('c','y','u','v'):
95 p_filter->pf_video_filter_io = cyuv_I420;
109 /* Following functions are local */
111 /*****************************************************************************
112 * YUY2_I420: packed YUY2 4:2:2 to planar YUV 4:2:0
113 *****************************************************************************/
114 static void YUY2_I420( filter_t *p_filter, picture_t *p_source,
117 uint8_t *p_line = p_source->p->p_pixels;
119 uint8_t *p_y = p_dest->Y_PIXELS;
120 uint8_t *p_u = p_dest->U_PIXELS;
121 uint8_t *p_v = p_dest->V_PIXELS;
125 const int i_dest_margin = p_dest->p[0].i_pitch
126 - p_dest->p[0].i_visible_pitch;
127 const int i_dest_margin_c = p_dest->p[1].i_pitch
128 - p_dest->p[1].i_visible_pitch;
129 const int i_source_margin = p_source->p->i_pitch
130 - p_source->p->i_visible_pitch;
134 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
138 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
140 #define C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v ) \
141 *p_y++ = *p_line++; p_line++; \
142 *p_y++ = *p_line++; p_line++
143 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
144 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
145 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
146 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
148 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
150 C_YUYV_YUV422_skip( p_line, p_y, p_u, p_v );
155 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
157 #define C_YUYV_YUV422( p_line, p_y, p_u, p_v ) \
158 *p_y++ = *p_line++; *p_u++ = *p_line++; \
159 *p_y++ = *p_line++; *p_v++ = *p_line++
160 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
161 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
162 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
163 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
165 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
167 C_YUYV_YUV422( p_line, p_y, p_u, p_v );
170 p_line += i_source_margin;
171 p_y += i_dest_margin;
172 p_u += i_dest_margin_c;
173 p_v += i_dest_margin_c;
179 /*****************************************************************************
180 * YVYU_I420: packed YVYU 4:2:2 to planar YUV 4:2:0
181 *****************************************************************************/
182 static void YVYU_I420( filter_t *p_filter, picture_t *p_source,
185 uint8_t *p_line = p_source->p->p_pixels;
187 uint8_t *p_y = p_dest->Y_PIXELS;
188 uint8_t *p_u = p_dest->U_PIXELS;
189 uint8_t *p_v = p_dest->V_PIXELS;
193 const int i_dest_margin = p_dest->p[0].i_pitch
194 - p_dest->p[0].i_visible_pitch;
195 const int i_dest_margin_c = p_dest->p[1].i_pitch
196 - p_dest->p[1].i_visible_pitch;
197 const int i_source_margin = p_source->p->i_pitch
198 - p_source->p->i_visible_pitch;
202 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
206 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
208 #define C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v ) \
209 *p_y++ = *p_line++; p_line++; \
210 *p_y++ = *p_line++; p_line++
211 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
212 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
213 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
214 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
216 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
218 C_YVYU_YUV422_skip( p_line, p_y, p_u, p_v );
223 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
225 #define C_YVYU_YUV422( p_line, p_y, p_u, p_v ) \
226 *p_y++ = *p_line++; *p_v++ = *p_line++; \
227 *p_y++ = *p_line++; *p_u++ = *p_line++
228 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
229 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
230 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
231 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
233 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
235 C_YVYU_YUV422( p_line, p_y, p_u, p_v );
238 p_line += i_source_margin;
239 p_y += i_dest_margin;
240 p_u += i_dest_margin_c;
241 p_v += i_dest_margin_c;
247 /*****************************************************************************
248 * UYVY_I420: packed UYVY 4:2:2 to planar YUV 4:2:0
249 *****************************************************************************/
250 static void UYVY_I420( filter_t *p_filter, picture_t *p_source,
253 uint8_t *p_line = p_source->p->p_pixels;
255 uint8_t *p_y = p_dest->Y_PIXELS;
256 uint8_t *p_u = p_dest->U_PIXELS;
257 uint8_t *p_v = p_dest->V_PIXELS;
261 const int i_dest_margin = p_dest->p[0].i_pitch
262 - p_dest->p[0].i_visible_pitch;
263 const int i_dest_margin_c = p_dest->p[1].i_pitch
264 - p_dest->p[1].i_visible_pitch;
265 const int i_source_margin = p_source->p->i_pitch
266 - p_source->p->i_visible_pitch;
270 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
274 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
276 #define C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v ) \
277 *p_u++ = *p_line++; p_line++; \
278 *p_v++ = *p_line++; p_line++
279 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
280 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
281 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
282 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
284 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
286 C_UYVY_YUV422_skip( p_line, p_y, p_u, p_v );
291 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
293 #define C_UYVY_YUV422( p_line, p_y, p_u, p_v ) \
294 *p_u++ = *p_line++; *p_y++ = *p_line++; \
295 *p_v++ = *p_line++; *p_y++ = *p_line++
296 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
297 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
298 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
299 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
301 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
303 C_UYVY_YUV422( p_line, p_y, p_u, p_v );
306 p_line += i_source_margin;
307 p_y += i_dest_margin;
308 p_u += i_dest_margin_c;
309 p_v += i_dest_margin_c;
315 /*****************************************************************************
316 * cyuv_I420: upside-down packed UYVY 4:2:2 to planar YUV 4:2:0
318 *****************************************************************************/
319 static void cyuv_I420( filter_t *p_filter, picture_t *p_source,
322 uint8_t *p_line = p_source->p->p_pixels;
324 uint8_t *p_y = p_dest->Y_PIXELS;
325 uint8_t *p_u = p_dest->U_PIXELS;
326 uint8_t *p_v = p_dest->V_PIXELS;
330 const int i_dest_margin = p_dest->p[0].i_pitch
331 - p_dest->p[0].i_visible_pitch;
332 const int i_dest_margin_c = p_dest->p[1].i_pitch
333 - p_dest->p[1].i_visible_pitch;
334 const int i_source_margin = p_source->p->i_pitch
335 - p_source->p->i_visible_pitch;
339 for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; )
343 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
345 #define C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v ) \
346 *p_y++ = *p_line++; p_line++; \
347 *p_y++ = *p_line++; p_line++
348 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
349 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
350 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
351 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
353 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
355 C_cyuv_YUV422_skip( p_line, p_y, p_u, p_v );
360 for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; )
362 #define C_cyuv_YUV422( p_line, p_y, p_u, p_v ) \
363 *p_y++ = *p_line++; *p_v++ = *p_line++; \
364 *p_y++ = *p_line++; *p_u++ = *p_line++
365 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
366 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
367 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
368 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
370 for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; )
372 C_cyuv_YUV422( p_line, p_y, p_u, p_v );
375 p_line += i_source_margin;
376 p_y += i_dest_margin;
377 p_u += i_dest_margin_c;
378 p_v += i_dest_margin_c;