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);
79 change_string_list( type_list, type_list_text, 0);
81 add_shortcut( "transform" );
82 set_callbacks( Create, Destroy );
85 static const char *ppsz_filter_options[] = {
89 /*****************************************************************************
90 * vout_sys_t: Transform video output method descriptor
91 *****************************************************************************
92 * This structure is part of the video output thread descriptor.
93 * It describes the Transform specific properties of an output thread.
94 *****************************************************************************/
98 vlc_bool_t b_rotation;
99 vout_thread_t *p_vout;
101 void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
104 /*****************************************************************************
105 * Control: control facility for the vout (forwards to child vout)
106 *****************************************************************************/
107 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
109 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
112 /*****************************************************************************
113 * Create: allocates Transform video thread output method
114 *****************************************************************************
115 * This function allocates and initializes a Transform vout method.
116 *****************************************************************************/
117 static int Create( vlc_object_t *p_this )
119 vout_thread_t *p_vout = (vout_thread_t *)p_this;
122 /* Allocate structure */
123 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
124 if( p_vout->p_sys == NULL )
126 msg_Err( p_vout, "out of memory" );
130 p_vout->pf_init = Init;
131 p_vout->pf_end = End;
132 p_vout->pf_manage = NULL;
133 p_vout->pf_render = Render;
134 p_vout->pf_display = NULL;
135 p_vout->pf_control = Control;
137 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
140 /* Look what method was requested */
141 psz_method = var_CreateGetNonEmptyString( p_vout, "transform-type" );
143 switch( p_vout->fmt_in.i_chroma )
146 case VLC_FOURCC('G','R','E','Y'):
147 p_vout->p_sys->pf_filter = FilterPlanar;
151 p_vout->p_sys->pf_filter = FilterYUYV;
155 msg_Err( p_vout, "Unsupported chroma" );
156 free( p_vout->p_sys );
160 if( psz_method == NULL )
162 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
163 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
164 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
165 p_vout->p_sys->b_rotation = 1;
169 if( !strcmp( psz_method, "hflip" ) )
171 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
172 p_vout->p_sys->b_rotation = 0;
174 else if( !strcmp( psz_method, "vflip" ) )
176 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
177 p_vout->p_sys->b_rotation = 0;
179 else if( !strcmp( psz_method, "90" ) )
181 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
182 p_vout->p_sys->b_rotation = 1;
184 else if( !strcmp( psz_method, "180" ) )
186 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
187 p_vout->p_sys->b_rotation = 0;
189 else if( !strcmp( psz_method, "270" ) )
191 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
192 p_vout->p_sys->b_rotation = 1;
196 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
197 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
198 p_vout->p_sys->b_rotation = 1;
207 /*****************************************************************************
208 * Init: initialize Transform video thread output method
209 *****************************************************************************/
210 static int Init( vout_thread_t *p_vout )
216 I_OUTPUTPICTURES = 0;
217 memset( &fmt, 0, sizeof(video_format_t) );
219 /* Initialize the output structure */
220 p_vout->output.i_chroma = p_vout->render.i_chroma;
221 p_vout->output.i_width = p_vout->render.i_width;
222 p_vout->output.i_height = p_vout->render.i_height;
223 p_vout->output.i_aspect = p_vout->render.i_aspect;
224 p_vout->fmt_out = p_vout->fmt_in;
225 fmt = p_vout->fmt_out;
227 /* Try to open the real video output */
228 msg_Dbg( p_vout, "spawning the real video output" );
230 if( p_vout->p_sys->b_rotation )
232 fmt.i_width = p_vout->fmt_out.i_height;
233 fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
234 fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
236 fmt.i_height = p_vout->fmt_out.i_width;
237 fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
238 fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
240 fmt.i_aspect = VOUT_ASPECT_FACTOR *
241 (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;
243 fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
244 fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
247 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
249 /* Everything failed */
250 if( p_vout->p_sys->p_vout == NULL )
252 msg_Err( p_vout, "cannot open vout, aborting" );
256 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
258 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
260 ADD_PARENT_CALLBACKS( SendEventsToChild );
265 /*****************************************************************************
266 * End: terminate Transform video thread output method
267 *****************************************************************************/
268 static void End( vout_thread_t *p_vout )
272 /* Free the fake output buffers we allocated */
273 for( i_index = I_OUTPUTPICTURES ; i_index ; )
276 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
280 /*****************************************************************************
281 * Destroy: destroy Transform video thread output method
282 *****************************************************************************
283 * Terminate an output method created by TransformCreateOutputMethod
284 *****************************************************************************/
285 static void Destroy( vlc_object_t *p_this )
287 vout_thread_t *p_vout = (vout_thread_t *)p_this;
289 if( p_vout->p_sys->p_vout )
291 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
292 vlc_object_detach( p_vout->p_sys->p_vout );
293 vout_Destroy( p_vout->p_sys->p_vout );
296 DEL_PARENT_CALLBACKS( SendEventsToChild );
298 free( p_vout->p_sys );
301 /*****************************************************************************
302 * Render: displays previously rendered output
303 *****************************************************************************
304 * This function send the currently rendered image to Transform image, waits
305 * until it is displayed and switch the two rendering buffers, preparing next
307 *****************************************************************************/
308 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
312 /* This is a new frame. Get a structure from the video_output. */
313 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
316 if( p_vout->b_die || p_vout->b_error )
320 msleep( VOUT_OUTMEM_SLEEP );
323 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
324 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
326 p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
328 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
330 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
333 /*****************************************************************************
334 * SendEvents: forward mouse and keyboard events to the parent p_vout
335 *****************************************************************************/
336 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
337 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
339 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
340 vlc_value_t sentval = newval;
342 /* Translate the mouse coordinates */
343 if( !strcmp( psz_var, "mouse-x" ) )
345 switch( p_vout->p_sys->i_mode )
347 case TRANSFORM_MODE_270:
348 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
350 case TRANSFORM_MODE_90:
351 var_Set( p_vout, "mouse-y", sentval );
354 case TRANSFORM_MODE_180:
355 case TRANSFORM_MODE_HFLIP:
356 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
360 case TRANSFORM_MODE_VFLIP:
365 else if( !strcmp( psz_var, "mouse-y" ) )
367 switch( p_vout->p_sys->i_mode )
369 case TRANSFORM_MODE_90:
370 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
372 case TRANSFORM_MODE_270:
373 var_Set( p_vout, "mouse-x", sentval );
376 case TRANSFORM_MODE_180:
377 case TRANSFORM_MODE_VFLIP:
378 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
382 case TRANSFORM_MODE_HFLIP:
388 var_Set( p_vout, psz_var, sentval );
393 /*****************************************************************************
394 * SendEventsToChild: forward events to the child/children vout
395 *****************************************************************************/
396 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
397 vlc_value_t oldval, vlc_value_t newval, void *p_data )
399 vout_thread_t *p_vout = (vout_thread_t *)p_this;
400 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
404 static void FilterPlanar( vout_thread_t *p_vout,
405 const picture_t *p_pic, picture_t *p_outpic )
408 switch( p_vout->p_sys->i_mode )
410 case TRANSFORM_MODE_90:
411 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
413 int i_pitch = p_pic->p[i_index].i_pitch;
415 uint8_t *p_in = p_pic->p[i_index].p_pixels;
417 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
418 uint8_t *p_out_end = p_out +
419 p_outpic->p[i_index].i_visible_lines *
420 p_outpic->p[i_index].i_pitch;
422 for( ; p_out < p_out_end ; )
426 p_out_end -= p_outpic->p[i_index].i_pitch
427 - p_outpic->p[i_index].i_visible_pitch;
428 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
431 for( ; p_in < p_line_end ; )
433 p_line_end -= i_pitch;
434 *(--p_out_end) = *p_line_end;
442 case TRANSFORM_MODE_180:
443 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
445 uint8_t *p_in = p_pic->p[i_index].p_pixels;
446 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
447 * p_pic->p[i_index].i_pitch;
449 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
451 for( ; p_in < p_in_end ; )
453 uint8_t *p_line_start = p_in_end
454 - p_pic->p[i_index].i_pitch;
455 p_in_end -= p_pic->p[i_index].i_pitch
456 - p_pic->p[i_index].i_visible_pitch;
458 for( ; p_line_start < p_in_end ; )
460 *p_out++ = *(--p_in_end);
463 p_out += p_outpic->p[i_index].i_pitch
464 - p_outpic->p[i_index].i_visible_pitch;
469 case TRANSFORM_MODE_270:
470 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
472 int i_pitch = p_pic->p[i_index].i_pitch;
474 uint8_t *p_in = p_pic->p[i_index].p_pixels;
476 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
477 uint8_t *p_out_end = p_out +
478 p_outpic->p[i_index].i_visible_lines *
479 p_outpic->p[i_index].i_pitch;
481 for( ; p_out < p_out_end ; )
485 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
488 for( ; p_in < p_in_end ; )
491 *p_out++ = *p_in_end;
494 p_out += p_outpic->p[i_index].i_pitch
495 - p_outpic->p[i_index].i_visible_pitch;
501 case TRANSFORM_MODE_HFLIP:
502 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
504 uint8_t *p_in = p_pic->p[i_index].p_pixels;
505 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
506 * p_pic->p[i_index].i_pitch;
508 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
510 for( ; p_in < p_in_end ; )
512 p_in_end -= p_pic->p[i_index].i_pitch;
513 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
514 p_pic->p[i_index].i_visible_pitch );
515 p_out += p_pic->p[i_index].i_pitch;
520 case TRANSFORM_MODE_VFLIP:
521 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
523 uint8_t *p_in = p_pic->p[i_index].p_pixels;
524 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
525 * p_pic->p[i_index].i_pitch;
527 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
529 for( ; p_in < p_in_end ; )
531 uint8_t *p_line_end = p_in
532 + p_pic->p[i_index].i_visible_pitch;
534 for( ; p_in < p_line_end ; )
536 *p_out++ = *(--p_line_end);
539 p_in += p_pic->p[i_index].i_pitch;
549 static void FilterYUYV( vout_thread_t *p_vout,
550 const picture_t *p_pic, picture_t *p_outpic )
553 int i_y_offset, i_u_offset, i_v_offset;
554 if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
555 &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
558 switch( p_vout->p_sys->i_mode )
560 case TRANSFORM_MODE_90:
561 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
563 int i_pitch = p_pic->p[i_index].i_pitch;
565 uint8_t *p_in = p_pic->p[i_index].p_pixels;
567 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
568 uint8_t *p_out_end = p_out +
569 p_outpic->p[i_index].i_visible_lines *
570 p_outpic->p[i_index].i_pitch;
572 int i_offset = i_u_offset;
573 int i_offset2 = i_v_offset;
574 for( ; p_out < p_out_end ; )
578 p_out_end -= p_outpic->p[i_index].i_pitch
579 - p_outpic->p[i_index].i_visible_pitch;
580 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
583 for( ; p_in < p_line_end ; )
585 p_line_end -= i_pitch;
587 p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
588 p_out_end[i_u_offset] = p_line_end[i_offset];
589 p_line_end -= i_pitch;
590 p_out_end[i_y_offset] = p_line_end[i_y_offset];
591 p_out_end[i_v_offset] = p_line_end[i_offset2];
598 i_offset = i_offset2;
605 case TRANSFORM_MODE_180:
606 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
608 uint8_t *p_in = p_pic->p[i_index].p_pixels;
609 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
610 * p_pic->p[i_index].i_pitch;
612 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
614 for( ; p_in < p_in_end ; )
616 uint8_t *p_line_start = p_in_end
617 - p_pic->p[i_index].i_pitch;
618 p_in_end -= p_pic->p[i_index].i_pitch
619 - p_pic->p[i_index].i_visible_pitch;
621 for( ; p_line_start < p_in_end ; )
624 p_out[i_y_offset] = p_in_end[i_y_offset+2];
625 p_out[i_u_offset] = p_in_end[i_u_offset];
626 p_out[i_y_offset+2] = p_in_end[i_y_offset];
627 p_out[i_v_offset] = p_in_end[i_v_offset];
631 p_out += p_outpic->p[i_index].i_pitch
632 - p_outpic->p[i_index].i_visible_pitch;
637 case TRANSFORM_MODE_270:
638 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
640 int i_pitch = p_pic->p[i_index].i_pitch;
642 uint8_t *p_in = p_pic->p[i_index].p_pixels;
644 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
645 uint8_t *p_out_end = p_out +
646 p_outpic->p[i_index].i_visible_lines *
647 p_outpic->p[i_index].i_pitch;
649 int i_offset = i_u_offset;
650 int i_offset2 = i_v_offset;
651 for( ; p_out < p_out_end ; )
656 + p_pic->p[i_index].i_visible_lines * i_pitch;
658 for( ; p_in < p_in_end ; )
661 p_out[i_y_offset] = p_in_end[i_y_offset];
662 p_out[i_u_offset] = p_in_end[i_offset];
664 p_out[i_y_offset+2] = p_in_end[i_y_offset];
665 p_out[i_v_offset] = p_in_end[i_offset2];
669 p_out += p_outpic->p[i_index].i_pitch
670 - p_outpic->p[i_index].i_visible_pitch;
675 i_offset = i_offset2;
682 case TRANSFORM_MODE_HFLIP:
683 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
685 uint8_t *p_in = p_pic->p[i_index].p_pixels;
686 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
687 * p_pic->p[i_index].i_pitch;
689 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
691 for( ; p_in < p_in_end ; )
693 p_in_end -= p_pic->p[i_index].i_pitch;
694 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
695 p_pic->p[i_index].i_visible_pitch );
696 p_out += p_pic->p[i_index].i_pitch;
701 case TRANSFORM_MODE_VFLIP:
702 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
704 uint8_t *p_in = p_pic->p[i_index].p_pixels;
705 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
706 * p_pic->p[i_index].i_pitch;
708 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
710 for( ; p_in < p_in_end ; )
712 uint8_t *p_line_end = p_in
713 + p_pic->p[i_index].i_visible_pitch;
715 for( ; p_in < p_line_end ; )
718 p_out[i_y_offset] = p_line_end[i_y_offset+2];
719 p_out[i_u_offset] = p_line_end[i_u_offset];
720 p_out[i_y_offset+2] = p_line_end[i_y_offset];
721 p_out[i_v_offset] = p_line_end[i_v_offset];
725 p_in += p_pic->p[i_index].i_pitch;