1 /*****************************************************************************
2 * transform.c : transform image module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.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 *****************************************************************************/
31 #include "filter_common.h"
32 #include "filter_picture.h"
34 #define TRANSFORM_MODE_HFLIP 1
35 #define TRANSFORM_MODE_VFLIP 2
36 #define TRANSFORM_MODE_90 3
37 #define TRANSFORM_MODE_180 4
38 #define TRANSFORM_MODE_270 5
40 /*****************************************************************************
42 *****************************************************************************/
43 static int Create ( vlc_object_t * );
44 static void Destroy ( vlc_object_t * );
46 static int Init ( vout_thread_t * );
47 static void End ( vout_thread_t * );
48 static void Render ( vout_thread_t *, picture_t * );
50 static void FilterPlanar( vout_thread_t *, const picture_t *, picture_t * );
51 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
53 static int SendEvents( vlc_object_t *, char const *,
54 vlc_value_t, vlc_value_t, void * );
56 /*****************************************************************************
58 *****************************************************************************/
59 #define TYPE_TEXT N_("Transform type")
60 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
62 static const char *type_list[] = { "90", "180", "270", "hflip", "vflip" };
63 static const char *type_list_text[] = { N_("Rotate by 90 degrees"),
64 N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
65 N_("Flip horizontally"), N_("Flip vertically") };
67 #define CFG_PREFIX "transform-"
70 set_description( _("Video transformation filter") );
71 set_shortname( _("Transformation"));
72 set_capability( "video filter", 0 );
73 set_category( CAT_VIDEO );
74 set_subcategory( SUBCAT_VIDEO_VFILTER );
76 add_string( CFG_PREFIX "type", "90", NULL,
77 TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
78 change_string_list( type_list, type_list_text, 0);
80 add_shortcut( "transform" );
81 set_callbacks( Create, Destroy );
84 static const char *ppsz_filter_options[] = {
88 /*****************************************************************************
89 * vout_sys_t: Transform video output method descriptor
90 *****************************************************************************
91 * This structure is part of the video output thread descriptor.
92 * It describes the Transform specific properties of an output thread.
93 *****************************************************************************/
97 vlc_bool_t b_rotation;
98 vout_thread_t *p_vout;
100 void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
103 /*****************************************************************************
104 * Control: control facility for the vout (forwards to child vout)
105 *****************************************************************************/
106 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
108 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
111 /*****************************************************************************
112 * Create: allocates Transform video thread output method
113 *****************************************************************************
114 * This function allocates and initializes a Transform vout method.
115 *****************************************************************************/
116 static int Create( vlc_object_t *p_this )
118 vout_thread_t *p_vout = (vout_thread_t *)p_this;
121 /* Allocate structure */
122 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
123 if( p_vout->p_sys == NULL )
125 msg_Err( p_vout, "out of memory" );
129 p_vout->pf_init = Init;
130 p_vout->pf_end = End;
131 p_vout->pf_manage = NULL;
132 p_vout->pf_render = Render;
133 p_vout->pf_display = NULL;
134 p_vout->pf_control = Control;
136 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
139 /* Look what method was requested */
140 psz_method = var_CreateGetNonEmptyString( p_vout, "transform-type" );
142 switch( p_vout->fmt_in.i_chroma )
145 case VLC_FOURCC('G','R','E','Y'):
146 p_vout->p_sys->pf_filter = FilterPlanar;
150 p_vout->p_sys->pf_filter = FilterYUYV;
154 msg_Err( p_vout, "Unsupported chroma" );
155 free( p_vout->p_sys );
159 if( psz_method == NULL )
161 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
162 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
163 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
164 p_vout->p_sys->b_rotation = 1;
168 if( !strcmp( psz_method, "hflip" ) )
170 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
171 p_vout->p_sys->b_rotation = 0;
173 else if( !strcmp( psz_method, "vflip" ) )
175 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
176 p_vout->p_sys->b_rotation = 0;
178 else if( !strcmp( psz_method, "90" ) )
180 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
181 p_vout->p_sys->b_rotation = 1;
183 else if( !strcmp( psz_method, "180" ) )
185 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
186 p_vout->p_sys->b_rotation = 0;
188 else if( !strcmp( psz_method, "270" ) )
190 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
191 p_vout->p_sys->b_rotation = 1;
195 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
196 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
197 p_vout->p_sys->b_rotation = 1;
206 /*****************************************************************************
207 * Init: initialize Transform video thread output method
208 *****************************************************************************/
209 static int Init( vout_thread_t *p_vout )
215 I_OUTPUTPICTURES = 0;
216 memset( &fmt, 0, sizeof(video_format_t) );
218 /* Initialize the output structure */
219 p_vout->output.i_chroma = p_vout->render.i_chroma;
220 p_vout->output.i_width = p_vout->render.i_width;
221 p_vout->output.i_height = p_vout->render.i_height;
222 p_vout->output.i_aspect = p_vout->render.i_aspect;
223 p_vout->fmt_out = p_vout->fmt_in;
224 fmt = p_vout->fmt_out;
226 /* Try to open the real video output */
227 msg_Dbg( p_vout, "spawning the real video output" );
229 if( p_vout->p_sys->b_rotation )
231 fmt.i_width = p_vout->fmt_out.i_height;
232 fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
233 fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
235 fmt.i_height = p_vout->fmt_out.i_width;
236 fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
237 fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
239 fmt.i_aspect = VOUT_ASPECT_FACTOR *
240 (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;
242 fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
243 fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
246 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
248 /* Everything failed */
249 if( p_vout->p_sys->p_vout == NULL )
251 msg_Err( p_vout, "cannot open vout, aborting" );
255 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
257 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
259 ADD_PARENT_CALLBACKS( SendEventsToChild );
264 /*****************************************************************************
265 * End: terminate Transform video thread output method
266 *****************************************************************************/
267 static void End( vout_thread_t *p_vout )
271 /* Free the fake output buffers we allocated */
272 for( i_index = I_OUTPUTPICTURES ; i_index ; )
275 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
279 /*****************************************************************************
280 * Destroy: destroy Transform video thread output method
281 *****************************************************************************
282 * Terminate an output method created by TransformCreateOutputMethod
283 *****************************************************************************/
284 static void Destroy( vlc_object_t *p_this )
286 vout_thread_t *p_vout = (vout_thread_t *)p_this;
288 if( p_vout->p_sys->p_vout )
290 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
291 vlc_object_detach( p_vout->p_sys->p_vout );
292 vout_Destroy( p_vout->p_sys->p_vout );
295 DEL_PARENT_CALLBACKS( SendEventsToChild );
297 free( p_vout->p_sys );
300 /*****************************************************************************
301 * Render: displays previously rendered output
302 *****************************************************************************
303 * This function send the currently rendered image to Transform image, waits
304 * until it is displayed and switch the two rendering buffers, preparing next
306 *****************************************************************************/
307 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
311 /* This is a new frame. Get a structure from the video_output. */
312 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
315 if( p_vout->b_die || p_vout->b_error )
319 msleep( VOUT_OUTMEM_SLEEP );
322 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
323 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
325 p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
327 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
329 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
332 /*****************************************************************************
333 * SendEvents: forward mouse and keyboard events to the parent p_vout
334 *****************************************************************************/
335 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
336 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
338 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
339 vlc_value_t sentval = newval;
341 /* Translate the mouse coordinates */
342 if( !strcmp( psz_var, "mouse-x" ) )
344 switch( p_vout->p_sys->i_mode )
346 case TRANSFORM_MODE_270:
347 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
349 case TRANSFORM_MODE_90:
350 var_Set( p_vout, "mouse-y", sentval );
353 case TRANSFORM_MODE_180:
354 case TRANSFORM_MODE_HFLIP:
355 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
359 case TRANSFORM_MODE_VFLIP:
364 else if( !strcmp( psz_var, "mouse-y" ) )
366 switch( p_vout->p_sys->i_mode )
368 case TRANSFORM_MODE_90:
369 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
371 case TRANSFORM_MODE_270:
372 var_Set( p_vout, "mouse-x", sentval );
375 case TRANSFORM_MODE_180:
376 case TRANSFORM_MODE_VFLIP:
377 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
381 case TRANSFORM_MODE_HFLIP:
387 var_Set( p_vout, psz_var, sentval );
392 /*****************************************************************************
393 * SendEventsToChild: forward events to the child/children vout
394 *****************************************************************************/
395 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
396 vlc_value_t oldval, vlc_value_t newval, void *p_data )
398 vout_thread_t *p_vout = (vout_thread_t *)p_this;
399 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
403 static void FilterPlanar( vout_thread_t *p_vout,
404 const picture_t *p_pic, picture_t *p_outpic )
407 switch( p_vout->p_sys->i_mode )
409 case TRANSFORM_MODE_90:
410 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
412 int i_pitch = p_pic->p[i_index].i_pitch;
414 uint8_t *p_in = p_pic->p[i_index].p_pixels;
416 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
417 uint8_t *p_out_end = p_out +
418 p_outpic->p[i_index].i_visible_lines *
419 p_outpic->p[i_index].i_pitch;
421 for( ; p_out < p_out_end ; )
425 p_out_end -= p_outpic->p[i_index].i_pitch
426 - p_outpic->p[i_index].i_visible_pitch;
427 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
430 for( ; p_in < p_line_end ; )
432 p_line_end -= i_pitch;
433 *(--p_out_end) = *p_line_end;
441 case TRANSFORM_MODE_180:
442 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
444 uint8_t *p_in = p_pic->p[i_index].p_pixels;
445 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
446 * p_pic->p[i_index].i_pitch;
448 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
450 for( ; p_in < p_in_end ; )
452 uint8_t *p_line_start = p_in_end
453 - p_pic->p[i_index].i_pitch;
454 p_in_end -= p_pic->p[i_index].i_pitch
455 - p_pic->p[i_index].i_visible_pitch;
457 for( ; p_line_start < p_in_end ; )
459 *p_out++ = *(--p_in_end);
462 p_out += p_outpic->p[i_index].i_pitch
463 - p_outpic->p[i_index].i_visible_pitch;
468 case TRANSFORM_MODE_270:
469 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
471 int i_pitch = p_pic->p[i_index].i_pitch;
473 uint8_t *p_in = p_pic->p[i_index].p_pixels;
475 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
476 uint8_t *p_out_end = p_out +
477 p_outpic->p[i_index].i_visible_lines *
478 p_outpic->p[i_index].i_pitch;
480 for( ; p_out < p_out_end ; )
484 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
487 for( ; p_in < p_in_end ; )
490 *p_out++ = *p_in_end;
493 p_out += p_outpic->p[i_index].i_pitch
494 - p_outpic->p[i_index].i_visible_pitch;
500 case TRANSFORM_MODE_HFLIP:
501 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
503 uint8_t *p_in = p_pic->p[i_index].p_pixels;
504 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
505 * p_pic->p[i_index].i_pitch;
507 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
509 for( ; p_in < p_in_end ; )
511 p_in_end -= p_pic->p[i_index].i_pitch;
512 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
513 p_pic->p[i_index].i_visible_pitch );
514 p_out += p_pic->p[i_index].i_pitch;
519 case TRANSFORM_MODE_VFLIP:
520 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
522 uint8_t *p_in = p_pic->p[i_index].p_pixels;
523 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
524 * p_pic->p[i_index].i_pitch;
526 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
528 for( ; p_in < p_in_end ; )
530 uint8_t *p_line_end = p_in
531 + p_pic->p[i_index].i_visible_pitch;
533 for( ; p_in < p_line_end ; )
535 *p_out++ = *(--p_line_end);
538 p_in += p_pic->p[i_index].i_pitch;
548 static void FilterYUYV( vout_thread_t *p_vout,
549 const picture_t *p_pic, picture_t *p_outpic )
552 int i_y_offset, i_u_offset, i_v_offset;
553 if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
554 &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
557 switch( p_vout->p_sys->i_mode )
559 case TRANSFORM_MODE_90:
560 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
562 int i_pitch = p_pic->p[i_index].i_pitch;
564 uint8_t *p_in = p_pic->p[i_index].p_pixels;
566 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
567 uint8_t *p_out_end = p_out +
568 p_outpic->p[i_index].i_visible_lines *
569 p_outpic->p[i_index].i_pitch;
571 int i_offset = i_u_offset;
572 int i_offset2 = i_v_offset;
573 for( ; p_out < p_out_end ; )
577 p_out_end -= p_outpic->p[i_index].i_pitch
578 - p_outpic->p[i_index].i_visible_pitch;
579 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
582 for( ; p_in < p_line_end ; )
584 p_line_end -= i_pitch;
586 p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
587 p_out_end[i_u_offset] = p_line_end[i_offset];
588 p_line_end -= i_pitch;
589 p_out_end[i_y_offset] = p_line_end[i_y_offset];
590 p_out_end[i_v_offset] = p_line_end[i_offset2];
597 i_offset = i_offset2;
604 case TRANSFORM_MODE_180:
605 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
607 uint8_t *p_in = p_pic->p[i_index].p_pixels;
608 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
609 * p_pic->p[i_index].i_pitch;
611 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
613 for( ; p_in < p_in_end ; )
615 uint8_t *p_line_start = p_in_end
616 - p_pic->p[i_index].i_pitch;
617 p_in_end -= p_pic->p[i_index].i_pitch
618 - p_pic->p[i_index].i_visible_pitch;
620 for( ; p_line_start < p_in_end ; )
623 p_out[i_y_offset] = p_in_end[i_y_offset+2];
624 p_out[i_u_offset] = p_in_end[i_u_offset];
625 p_out[i_y_offset+2] = p_in_end[i_y_offset];
626 p_out[i_v_offset] = p_in_end[i_v_offset];
630 p_out += p_outpic->p[i_index].i_pitch
631 - p_outpic->p[i_index].i_visible_pitch;
636 case TRANSFORM_MODE_270:
637 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
639 int i_pitch = p_pic->p[i_index].i_pitch;
641 uint8_t *p_in = p_pic->p[i_index].p_pixels;
643 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
644 uint8_t *p_out_end = p_out +
645 p_outpic->p[i_index].i_visible_lines *
646 p_outpic->p[i_index].i_pitch;
648 int i_offset = i_u_offset;
649 int i_offset2 = i_v_offset;
650 for( ; p_out < p_out_end ; )
655 + p_pic->p[i_index].i_visible_lines * i_pitch;
657 for( ; p_in < p_in_end ; )
660 p_out[i_y_offset] = p_in_end[i_y_offset];
661 p_out[i_u_offset] = p_in_end[i_offset];
663 p_out[i_y_offset+2] = p_in_end[i_y_offset];
664 p_out[i_v_offset] = p_in_end[i_offset2];
668 p_out += p_outpic->p[i_index].i_pitch
669 - p_outpic->p[i_index].i_visible_pitch;
674 i_offset = i_offset2;
681 case TRANSFORM_MODE_HFLIP:
682 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
684 uint8_t *p_in = p_pic->p[i_index].p_pixels;
685 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
686 * p_pic->p[i_index].i_pitch;
688 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
690 for( ; p_in < p_in_end ; )
692 p_in_end -= p_pic->p[i_index].i_pitch;
693 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
694 p_pic->p[i_index].i_visible_pitch );
695 p_out += p_pic->p[i_index].i_pitch;
700 case TRANSFORM_MODE_VFLIP:
701 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
703 uint8_t *p_in = p_pic->p[i_index].p_pixels;
704 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
705 * p_pic->p[i_index].i_pitch;
707 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
709 for( ; p_in < p_in_end ; )
711 uint8_t *p_line_end = p_in
712 + p_pic->p[i_index].i_visible_pitch;
714 for( ; p_in < p_line_end ; )
717 p_out[i_y_offset] = p_line_end[i_y_offset+2];
718 p_out[i_u_offset] = p_line_end[i_u_offset];
719 p_out[i_y_offset+2] = p_line_end[i_y_offset];
720 p_out[i_v_offset] = p_line_end[i_v_offset];
724 p_in += p_pic->p[i_index].i_pitch;