string review by Christophe Mutricy aka xtophe
[vlc.git] / modules / video_chroma / i422_yuy2.c
1 /*****************************************************************************
2  * i422_yuy2.c : YUV to YUV conversion module for vlc
3  *****************************************************************************
4  * Copyright (C) 2000, 2001 VideoLAN
5  * $Id: i422_yuy2.c,v 1.5 2004/01/25 17:20:18 kuehne Exp $
6  *
7  * Authors: Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
22  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27 #include <string.h>                                            /* strerror() */
28 #include <stdlib.h>                                      /* malloc(), free() */
29
30 #include <vlc/vlc.h>
31 #include <vlc/vout.h>
32
33 #include "i422_yuy2.h"
34
35 #define SRC_FOURCC  "I422"
36 #if defined (MODULE_NAME_IS_i422_yuy2)
37 #    define DEST_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422,IUYV,cyuv,Y211"
38 #else
39 #    define DEST_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422,IUYV,cyuv"
40 #endif
41
42 /*****************************************************************************
43  * Local and extern prototypes.
44  *****************************************************************************/
45 static int  Activate ( vlc_object_t * );
46
47 static void I422_YUY2           ( vout_thread_t *, picture_t *, picture_t * );
48 static void I422_YVYU           ( vout_thread_t *, picture_t *, picture_t * );
49 static void I422_UYVY           ( vout_thread_t *, picture_t *, picture_t * );
50 static void I422_IUYV           ( vout_thread_t *, picture_t *, picture_t * );
51 static void I422_cyuv           ( vout_thread_t *, picture_t *, picture_t * );
52 #if defined (MODULE_NAME_IS_i422_yuy2)
53 static void I422_Y211           ( vout_thread_t *, picture_t *, picture_t * );
54 static void I422_Y211           ( vout_thread_t *, picture_t *, picture_t * );
55 static void I422_YV12           ( vout_thread_t *, picture_t *, picture_t * );
56 #endif
57
58 /*****************************************************************************
59  * Module descriptor
60  *****************************************************************************/
61 vlc_module_begin();
62 #if defined (MODULE_NAME_IS_i422_yuy2)
63     set_description( _("Conversions from " SRC_FOURCC " to " DEST_FOURCC) );
64     set_capability( "chroma", 80 );
65 #elif defined (MODULE_NAME_IS_i422_yuy2_mmx)
66     set_description( _("MMX conversions from " SRC_FOURCC " to " DEST_FOURCC) );
67     set_capability( "chroma", 100 );
68     add_requirement( MMX );
69 #endif
70     set_callbacks( Activate, NULL );
71 vlc_module_end();
72
73 /*****************************************************************************
74  * Activate: allocate a chroma function
75  *****************************************************************************
76  * This function allocates and initializes a chroma function
77  *****************************************************************************/
78 static int Activate( vlc_object_t *p_this )
79 {
80     vout_thread_t *p_vout = (vout_thread_t *)p_this;
81
82     if( p_vout->render.i_width & 1 || p_vout->render.i_height & 1 )
83     {
84         return -1;
85     }
86
87     switch( p_vout->render.i_chroma )
88     {
89         case VLC_FOURCC('I','4','2','2'):
90             switch( p_vout->output.i_chroma )
91             {
92                 case VLC_FOURCC('Y','U','Y','2'):
93                 case VLC_FOURCC('Y','U','N','V'):
94                     p_vout->chroma.pf_convert = I422_YUY2;
95                     break;
96
97                 case VLC_FOURCC('Y','V','Y','U'):
98                     p_vout->chroma.pf_convert = I422_YVYU;
99                     break;
100
101                 case VLC_FOURCC('U','Y','V','Y'):
102                 case VLC_FOURCC('U','Y','N','V'):
103                 case VLC_FOURCC('Y','4','2','2'):
104                     p_vout->chroma.pf_convert = I422_UYVY;
105                     break;
106
107                 case VLC_FOURCC('I','U','Y','V'):
108                     p_vout->chroma.pf_convert = I422_IUYV;
109                     break;
110
111                 case VLC_FOURCC('c','y','u','v'):
112                     p_vout->chroma.pf_convert = I422_cyuv;
113                     break;
114
115 #if defined (MODULE_NAME_IS_i422_yuy2)
116                 case VLC_FOURCC('Y','2','1','1'):
117                     p_vout->chroma.pf_convert = I422_Y211;
118                     break;
119
120                 case VLC_FOURCC('Y','V','1','2'):
121                     p_vout->chroma.pf_convert = I422_YV12;
122                     break;
123 #endif
124
125                 default:
126                     return -1;
127             }
128             break;
129
130         default:
131             return -1;
132     }
133     
134     return 0; 
135 }
136
137 /* Following functions are local */
138
139 /*****************************************************************************
140  * I422_YUY2: planar YUV 4:2:2 to packed YUY2 4:2:2
141  *****************************************************************************/
142 static void I422_YUY2( vout_thread_t *p_vout, picture_t *p_source,
143                                               picture_t *p_dest )
144 {
145     uint8_t *p_line = p_dest->p->p_pixels;
146     uint8_t *p_y = p_source->Y_PIXELS;
147     uint8_t *p_u = p_source->U_PIXELS;
148     uint8_t *p_v = p_source->V_PIXELS;
149
150     int i_x, i_y;
151
152     for( i_y = p_vout->render.i_height ; i_y-- ; )
153     {
154         for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
155         {
156 #if defined (MODULE_NAME_IS_i422_yuy2)
157             C_YUV422_YUYV( p_line, p_y, p_u, p_v );
158             C_YUV422_YUYV( p_line, p_y, p_u, p_v );
159             C_YUV422_YUYV( p_line, p_y, p_u, p_v );
160             C_YUV422_YUYV( p_line, p_y, p_u, p_v );
161 #else
162             __asm__( ".align 8" MMX_YUV422_YUYV
163                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
164
165             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
166
167             __asm__( ".align 8" MMX_YUV422_YUYV
168                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
169
170             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
171 #endif
172         }
173     }
174 }
175
176 /*****************************************************************************
177  * I422_YVYU: planar YUV 4:2:2 to packed YVYU 4:2:2
178  *****************************************************************************/
179 static void I422_YVYU( vout_thread_t *p_vout, picture_t *p_source,
180                                               picture_t *p_dest )
181 {
182     uint8_t *p_line = p_dest->p->p_pixels;
183     uint8_t *p_y = p_source->Y_PIXELS;
184     uint8_t *p_u = p_source->U_PIXELS;
185     uint8_t *p_v = p_source->V_PIXELS;
186
187     int i_x, i_y;
188
189     for( i_y = p_vout->render.i_height ; i_y-- ; )
190     {
191         for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
192         {
193 #if defined (MODULE_NAME_IS_i422_yuy2)
194             C_YUV422_YVYU( p_line, p_y, p_u, p_v );
195             C_YUV422_YVYU( p_line, p_y, p_u, p_v );
196             C_YUV422_YVYU( p_line, p_y, p_u, p_v );
197             C_YUV422_YVYU( p_line, p_y, p_u, p_v );
198 #else
199             __asm__( ".align 8" MMX_YUV422_YVYU
200                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
201
202             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
203
204             __asm__( ".align 8" MMX_YUV422_YVYU
205                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
206
207             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
208 #endif
209         }
210     }
211 }
212
213 /*****************************************************************************
214  * I422_UYVY: planar YUV 4:2:2 to packed UYVY 4:2:2
215  *****************************************************************************/
216 static void I422_UYVY( vout_thread_t *p_vout, picture_t *p_source,
217                                               picture_t *p_dest )
218 {
219     uint8_t *p_line = p_dest->p->p_pixels;
220     uint8_t *p_y = p_source->Y_PIXELS;
221     uint8_t *p_u = p_source->U_PIXELS;
222     uint8_t *p_v = p_source->V_PIXELS;
223
224     int i_x, i_y;
225
226     for( i_y = p_vout->render.i_height ; i_y-- ; )
227     {
228         for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
229         {
230 #if defined (MODULE_NAME_IS_i422_yuy2)
231             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
232             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
233             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
234             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
235 #else
236             __asm__( ".align 8" MMX_YUV422_UYVY
237                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
238
239             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
240
241             __asm__( ".align 8" MMX_YUV422_UYVY
242                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
243
244             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
245 #endif
246         }
247     }
248 }
249
250 /*****************************************************************************
251  * I422_IUYV: planar YUV 4:2:2 to interleaved packed IUYV 4:2:2
252  *****************************************************************************/
253 static void I422_IUYV( vout_thread_t *p_vout, picture_t *p_source,
254                                               picture_t *p_dest )
255 {
256     /* FIXME: TODO ! */
257     msg_Err( p_vout, "I422_IUYV unimplemented, please harass <sam@zoy.org>" );
258 }
259
260 /*****************************************************************************
261  * I422_cyuv: planar YUV 4:2:2 to upside-down packed UYVY 4:2:2
262  *****************************************************************************/
263 static void I422_cyuv( vout_thread_t *p_vout, picture_t *p_source,
264                                               picture_t *p_dest )
265 {
266     uint8_t *p_line = p_dest->p->p_pixels + p_dest->p->i_lines * p_dest->p->i_pitch;
267     uint8_t *p_y = p_source->Y_PIXELS;
268     uint8_t *p_u = p_source->U_PIXELS;
269     uint8_t *p_v = p_source->V_PIXELS;
270
271     int i_x, i_y;
272
273     for( i_y = p_vout->render.i_height ; i_y-- ; )
274     {
275         for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
276         {
277             p_line -= 2 * p_dest->p->i_pitch;
278
279 #if defined (MODULE_NAME_IS_i422_yuy2)
280             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
281             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
282             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
283             C_YUV422_UYVY( p_line, p_y, p_u, p_v );
284 #else
285             __asm__( ".align 8" MMX_YUV422_UYVY
286                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
287
288             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
289
290             __asm__( ".align 8" MMX_YUV422_UYVY
291                      : : "r" (p_line), "r" (p_y), "r" (p_u), "r" (p_v) ); 
292
293             p_line += 8; p_y += 4; p_u += 2; p_v += 2;
294 #endif
295         }
296     }
297 }
298
299 /*****************************************************************************
300  * I422_Y211: planar YUV 4:2:2 to packed YUYV 2:1:1
301  *****************************************************************************/
302 #if defined (MODULE_NAME_IS_i422_yuy2)
303 static void I422_Y211( vout_thread_t *p_vout, picture_t *p_source,
304                                               picture_t *p_dest )
305 {
306     uint8_t *p_line = p_dest->p->p_pixels + p_dest->p->i_lines * p_dest->p->i_pitch;
307     uint8_t *p_y = p_source->Y_PIXELS;
308     uint8_t *p_u = p_source->U_PIXELS;
309     uint8_t *p_v = p_source->V_PIXELS;
310
311     int i_x, i_y;
312
313     for( i_y = p_vout->render.i_height ; i_y-- ; )
314     {
315         for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
316         {
317             C_YUV422_Y211( p_line, p_y, p_u, p_v );
318             C_YUV422_Y211( p_line, p_y, p_u, p_v );
319         }
320     }
321 }
322 #endif
323
324
325 /*****************************************************************************
326  * I422_YV12: planar YUV 4:2:2 to planar YV12
327  *****************************************************************************/
328 #if defined (MODULE_NAME_IS_i422_yuy2)
329 static void I422_YV12( vout_thread_t *p_vout, picture_t *p_source,
330                                               picture_t *p_dest )
331 {
332     uint16_t i_dpy = p_dest->p[Y_PLANE].i_pitch;
333     uint16_t i_spy = p_source->p[Y_PLANE].i_pitch;
334     uint16_t i_dpuv = p_dest->p[U_PLANE].i_pitch;
335     uint16_t i_spuv = p_source->p[U_PLANE].i_pitch;
336     uint16_t i_width = p_vout->render.i_width;
337     uint16_t i_y = p_vout->render.i_height;
338     uint8_t *p_dy = p_dest->Y_PIXELS + (i_y-1)*i_dpy;
339     uint8_t *p_y = p_source->Y_PIXELS + (i_y-1)*i_spy;
340     uint8_t *p_du = p_dest->U_PIXELS + (i_y/2-1)*i_dpuv;
341     uint8_t *p_u = p_source->U_PIXELS + (i_y-1)*i_spuv;
342     uint8_t *p_dv = p_dest->V_PIXELS + (i_y/2-1)*i_dpuv;
343     uint8_t *p_v = p_source->V_PIXELS + (i_y-1)*i_spuv;
344     i_y /= 2;
345
346     for ( ; i_y--; )
347     {
348         memcpy(p_dy, p_y, i_width); p_dy -= i_dpy; p_y -= i_spy;
349         memcpy(p_dy, p_y, i_width); p_dy -= i_dpy; p_y -= i_spy;
350         memcpy(p_du, p_u, i_width/2); p_du -= i_dpuv; p_u -= 2*i_spuv;
351         memcpy(p_dv, p_v, i_width/2); p_dv -= i_dpuv; p_v -= 2*i_spuv;
352     }
353
354 }
355 #endif