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 *****************************************************************************/
35 #include "filter_common.h"
36 #include "filter_picture.h"
38 #define TRANSFORM_MODE_HFLIP 1
39 #define TRANSFORM_MODE_VFLIP 2
40 #define TRANSFORM_MODE_90 3
41 #define TRANSFORM_MODE_180 4
42 #define TRANSFORM_MODE_270 5
44 /*****************************************************************************
46 *****************************************************************************/
47 static int Create ( vlc_object_t * );
48 static void Destroy ( vlc_object_t * );
50 static int Init ( vout_thread_t * );
51 static void End ( vout_thread_t * );
52 static void Render ( vout_thread_t *, picture_t * );
54 static void FilterPlanar( vout_thread_t *, const picture_t *, picture_t * );
55 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
57 static int SendEvents( vlc_object_t *, char const *,
58 vlc_value_t, vlc_value_t, void * );
60 /*****************************************************************************
62 *****************************************************************************/
63 #define TYPE_TEXT N_("Transform type")
64 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
66 static const char *type_list[] = { "90", "180", "270", "hflip", "vflip" };
67 static const char *type_list_text[] = { N_("Rotate by 90 degrees"),
68 N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
69 N_("Flip horizontally"), N_("Flip vertically") };
71 #define CFG_PREFIX "transform-"
74 set_description( _("Video transformation filter") );
75 set_shortname( _("Transformation"));
76 set_capability( "video filter", 0 );
77 set_category( CAT_VIDEO );
78 set_subcategory( SUBCAT_VIDEO_VFILTER );
80 add_string( CFG_PREFIX "type", "90", NULL,
81 TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
82 change_string_list( type_list, type_list_text, 0);
84 add_shortcut( "transform" );
85 set_callbacks( Create, Destroy );
88 static const char *ppsz_filter_options[] = {
92 /*****************************************************************************
93 * vout_sys_t: Transform video output method descriptor
94 *****************************************************************************
95 * This structure is part of the video output thread descriptor.
96 * It describes the Transform specific properties of an output thread.
97 *****************************************************************************/
101 vlc_bool_t b_rotation;
102 vout_thread_t *p_vout;
104 void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
107 /*****************************************************************************
108 * Control: control facility for the vout (forwards to child vout)
109 *****************************************************************************/
110 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
112 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
115 /*****************************************************************************
116 * Create: allocates Transform video thread output method
117 *****************************************************************************
118 * This function allocates and initializes a Transform vout method.
119 *****************************************************************************/
120 static int Create( vlc_object_t *p_this )
122 vout_thread_t *p_vout = (vout_thread_t *)p_this;
125 /* Allocate structure */
126 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
127 if( p_vout->p_sys == NULL )
129 msg_Err( p_vout, "out of memory" );
133 p_vout->pf_init = Init;
134 p_vout->pf_end = End;
135 p_vout->pf_manage = NULL;
136 p_vout->pf_render = Render;
137 p_vout->pf_display = NULL;
138 p_vout->pf_control = Control;
140 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
143 /* Look what method was requested */
144 psz_method = var_CreateGetNonEmptyString( p_vout, "transform-type" );
146 switch( p_vout->fmt_in.i_chroma )
149 case VLC_FOURCC('G','R','E','Y'):
150 p_vout->p_sys->pf_filter = FilterPlanar;
154 p_vout->p_sys->pf_filter = FilterYUYV;
158 msg_Err( p_vout, "Unsupported chroma" );
159 free( p_vout->p_sys );
163 if( psz_method == NULL )
165 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
166 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
167 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
168 p_vout->p_sys->b_rotation = 1;
172 if( !strcmp( psz_method, "hflip" ) )
174 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
175 p_vout->p_sys->b_rotation = 0;
177 else if( !strcmp( psz_method, "vflip" ) )
179 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
180 p_vout->p_sys->b_rotation = 0;
182 else if( !strcmp( psz_method, "90" ) )
184 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
185 p_vout->p_sys->b_rotation = 1;
187 else if( !strcmp( psz_method, "180" ) )
189 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
190 p_vout->p_sys->b_rotation = 0;
192 else if( !strcmp( psz_method, "270" ) )
194 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
195 p_vout->p_sys->b_rotation = 1;
199 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
200 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
201 p_vout->p_sys->b_rotation = 1;
210 /*****************************************************************************
211 * Init: initialize Transform video thread output method
212 *****************************************************************************/
213 static int Init( vout_thread_t *p_vout )
219 I_OUTPUTPICTURES = 0;
220 memset( &fmt, 0, sizeof(video_format_t) );
222 /* Initialize the output structure */
223 p_vout->output.i_chroma = p_vout->render.i_chroma;
224 p_vout->output.i_width = p_vout->render.i_width;
225 p_vout->output.i_height = p_vout->render.i_height;
226 p_vout->output.i_aspect = p_vout->render.i_aspect;
227 p_vout->fmt_out = p_vout->fmt_in;
228 fmt = p_vout->fmt_out;
230 /* Try to open the real video output */
231 msg_Dbg( p_vout, "spawning the real video output" );
233 if( p_vout->p_sys->b_rotation )
235 fmt.i_width = p_vout->fmt_out.i_height;
236 fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
237 fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
239 fmt.i_height = p_vout->fmt_out.i_width;
240 fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
241 fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
243 fmt.i_aspect = VOUT_ASPECT_FACTOR *
244 (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;
246 fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
247 fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
250 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
252 /* Everything failed */
253 if( p_vout->p_sys->p_vout == NULL )
255 msg_Err( p_vout, "cannot open vout, aborting" );
259 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
261 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
263 ADD_PARENT_CALLBACKS( SendEventsToChild );
268 /*****************************************************************************
269 * End: terminate Transform video thread output method
270 *****************************************************************************/
271 static void End( vout_thread_t *p_vout )
275 /* Free the fake output buffers we allocated */
276 for( i_index = I_OUTPUTPICTURES ; i_index ; )
279 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
283 /*****************************************************************************
284 * Destroy: destroy Transform video thread output method
285 *****************************************************************************
286 * Terminate an output method created by TransformCreateOutputMethod
287 *****************************************************************************/
288 static void Destroy( vlc_object_t *p_this )
290 vout_thread_t *p_vout = (vout_thread_t *)p_this;
292 if( p_vout->p_sys->p_vout )
294 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
295 vlc_object_detach( p_vout->p_sys->p_vout );
296 vout_Destroy( p_vout->p_sys->p_vout );
299 DEL_PARENT_CALLBACKS( SendEventsToChild );
301 free( p_vout->p_sys );
304 /*****************************************************************************
305 * Render: displays previously rendered output
306 *****************************************************************************
307 * This function send the currently rendered image to Transform image, waits
308 * until it is displayed and switch the two rendering buffers, preparing next
310 *****************************************************************************/
311 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
315 /* This is a new frame. Get a structure from the video_output. */
316 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
319 if( p_vout->b_die || p_vout->b_error )
323 msleep( VOUT_OUTMEM_SLEEP );
326 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
327 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
329 p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
331 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
333 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
336 /*****************************************************************************
337 * SendEvents: forward mouse and keyboard events to the parent p_vout
338 *****************************************************************************/
339 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
340 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
342 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
343 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
344 vlc_value_t sentval = newval;
346 /* Translate the mouse coordinates */
347 if( !strcmp( psz_var, "mouse-x" ) )
349 switch( p_vout->p_sys->i_mode )
351 case TRANSFORM_MODE_270:
352 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
354 case TRANSFORM_MODE_90:
355 var_Set( p_vout, "mouse-y", sentval );
358 case TRANSFORM_MODE_180:
359 case TRANSFORM_MODE_HFLIP:
360 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
364 case TRANSFORM_MODE_VFLIP:
369 else if( !strcmp( psz_var, "mouse-y" ) )
371 switch( p_vout->p_sys->i_mode )
373 case TRANSFORM_MODE_90:
374 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
376 case TRANSFORM_MODE_270:
377 var_Set( p_vout, "mouse-x", sentval );
380 case TRANSFORM_MODE_180:
381 case TRANSFORM_MODE_VFLIP:
382 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
386 case TRANSFORM_MODE_HFLIP:
392 var_Set( p_vout, psz_var, sentval );
397 /*****************************************************************************
398 * SendEventsToChild: forward events to the child/children vout
399 *****************************************************************************/
400 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
401 vlc_value_t oldval, vlc_value_t newval, void *p_data )
403 VLC_UNUSED(p_data); VLC_UNUSED(oldval);
404 vout_thread_t *p_vout = (vout_thread_t *)p_this;
405 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
409 static void FilterPlanar( vout_thread_t *p_vout,
410 const picture_t *p_pic, picture_t *p_outpic )
413 switch( p_vout->p_sys->i_mode )
415 case TRANSFORM_MODE_90:
416 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
418 int i_pitch = p_pic->p[i_index].i_pitch;
420 uint8_t *p_in = p_pic->p[i_index].p_pixels;
422 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
423 uint8_t *p_out_end = p_out +
424 p_outpic->p[i_index].i_visible_lines *
425 p_outpic->p[i_index].i_pitch;
427 for( ; p_out < p_out_end ; )
431 p_out_end -= p_outpic->p[i_index].i_pitch
432 - p_outpic->p[i_index].i_visible_pitch;
433 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
436 for( ; p_in < p_line_end ; )
438 p_line_end -= i_pitch;
439 *(--p_out_end) = *p_line_end;
447 case TRANSFORM_MODE_180:
448 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
450 uint8_t *p_in = p_pic->p[i_index].p_pixels;
451 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
452 * p_pic->p[i_index].i_pitch;
454 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
456 for( ; p_in < p_in_end ; )
458 uint8_t *p_line_start = p_in_end
459 - p_pic->p[i_index].i_pitch;
460 p_in_end -= p_pic->p[i_index].i_pitch
461 - p_pic->p[i_index].i_visible_pitch;
463 for( ; p_line_start < p_in_end ; )
465 *p_out++ = *(--p_in_end);
468 p_out += p_outpic->p[i_index].i_pitch
469 - p_outpic->p[i_index].i_visible_pitch;
474 case TRANSFORM_MODE_270:
475 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
477 int i_pitch = p_pic->p[i_index].i_pitch;
479 uint8_t *p_in = p_pic->p[i_index].p_pixels;
481 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
482 uint8_t *p_out_end = p_out +
483 p_outpic->p[i_index].i_visible_lines *
484 p_outpic->p[i_index].i_pitch;
486 for( ; p_out < p_out_end ; )
490 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
493 for( ; p_in < p_in_end ; )
496 *p_out++ = *p_in_end;
499 p_out += p_outpic->p[i_index].i_pitch
500 - p_outpic->p[i_index].i_visible_pitch;
506 case TRANSFORM_MODE_HFLIP:
507 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
509 uint8_t *p_in = p_pic->p[i_index].p_pixels;
510 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
511 * p_pic->p[i_index].i_pitch;
513 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
515 for( ; p_in < p_in_end ; )
517 p_in_end -= p_pic->p[i_index].i_pitch;
518 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
519 p_pic->p[i_index].i_visible_pitch );
520 p_out += p_pic->p[i_index].i_pitch;
525 case TRANSFORM_MODE_VFLIP:
526 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
528 uint8_t *p_in = p_pic->p[i_index].p_pixels;
529 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
530 * p_pic->p[i_index].i_pitch;
532 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
534 for( ; p_in < p_in_end ; )
536 uint8_t *p_line_end = p_in
537 + p_pic->p[i_index].i_visible_pitch;
539 for( ; p_in < p_line_end ; )
541 *p_out++ = *(--p_line_end);
544 p_in += p_pic->p[i_index].i_pitch;
554 static void FilterYUYV( vout_thread_t *p_vout,
555 const picture_t *p_pic, picture_t *p_outpic )
558 int i_y_offset, i_u_offset, i_v_offset;
559 if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
560 &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
563 switch( p_vout->p_sys->i_mode )
565 case TRANSFORM_MODE_90:
566 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
568 int i_pitch = p_pic->p[i_index].i_pitch;
570 uint8_t *p_in = p_pic->p[i_index].p_pixels;
572 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
573 uint8_t *p_out_end = p_out +
574 p_outpic->p[i_index].i_visible_lines *
575 p_outpic->p[i_index].i_pitch;
577 int i_offset = i_u_offset;
578 int i_offset2 = i_v_offset;
579 for( ; p_out < p_out_end ; )
583 p_out_end -= p_outpic->p[i_index].i_pitch
584 - p_outpic->p[i_index].i_visible_pitch;
585 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
588 for( ; p_in < p_line_end ; )
590 p_line_end -= i_pitch;
592 p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
593 p_out_end[i_u_offset] = p_line_end[i_offset];
594 p_line_end -= i_pitch;
595 p_out_end[i_y_offset] = p_line_end[i_y_offset];
596 p_out_end[i_v_offset] = p_line_end[i_offset2];
603 i_offset = i_offset2;
610 case TRANSFORM_MODE_180:
611 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
613 uint8_t *p_in = p_pic->p[i_index].p_pixels;
614 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
615 * p_pic->p[i_index].i_pitch;
617 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
619 for( ; p_in < p_in_end ; )
621 uint8_t *p_line_start = p_in_end
622 - p_pic->p[i_index].i_pitch;
623 p_in_end -= p_pic->p[i_index].i_pitch
624 - p_pic->p[i_index].i_visible_pitch;
626 for( ; p_line_start < p_in_end ; )
629 p_out[i_y_offset] = p_in_end[i_y_offset+2];
630 p_out[i_u_offset] = p_in_end[i_u_offset];
631 p_out[i_y_offset+2] = p_in_end[i_y_offset];
632 p_out[i_v_offset] = p_in_end[i_v_offset];
636 p_out += p_outpic->p[i_index].i_pitch
637 - p_outpic->p[i_index].i_visible_pitch;
642 case TRANSFORM_MODE_270:
643 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
645 int i_pitch = p_pic->p[i_index].i_pitch;
647 uint8_t *p_in = p_pic->p[i_index].p_pixels;
649 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
650 uint8_t *p_out_end = p_out +
651 p_outpic->p[i_index].i_visible_lines *
652 p_outpic->p[i_index].i_pitch;
654 int i_offset = i_u_offset;
655 int i_offset2 = i_v_offset;
656 for( ; p_out < p_out_end ; )
661 + p_pic->p[i_index].i_visible_lines * i_pitch;
663 for( ; p_in < p_in_end ; )
666 p_out[i_y_offset] = p_in_end[i_y_offset];
667 p_out[i_u_offset] = p_in_end[i_offset];
669 p_out[i_y_offset+2] = p_in_end[i_y_offset];
670 p_out[i_v_offset] = p_in_end[i_offset2];
674 p_out += p_outpic->p[i_index].i_pitch
675 - p_outpic->p[i_index].i_visible_pitch;
680 i_offset = i_offset2;
687 case TRANSFORM_MODE_HFLIP:
688 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
690 uint8_t *p_in = p_pic->p[i_index].p_pixels;
691 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
692 * p_pic->p[i_index].i_pitch;
694 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
696 for( ; p_in < p_in_end ; )
698 p_in_end -= p_pic->p[i_index].i_pitch;
699 p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
700 p_pic->p[i_index].i_visible_pitch );
701 p_out += p_pic->p[i_index].i_pitch;
706 case TRANSFORM_MODE_VFLIP:
707 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
709 uint8_t *p_in = p_pic->p[i_index].p_pixels;
710 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
711 * p_pic->p[i_index].i_pitch;
713 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
715 for( ; p_in < p_in_end ; )
717 uint8_t *p_line_end = p_in
718 + p_pic->p[i_index].i_visible_pitch;
720 for( ; p_in < p_line_end ; )
723 p_out[i_y_offset] = p_line_end[i_y_offset+2];
724 p_out[i_u_offset] = p_line_end[i_u_offset];
725 p_out[i_y_offset+2] = p_line_end[i_y_offset];
726 p_out[i_v_offset] = p_line_end[i_v_offset];
730 p_in += p_pic->p[i_index].i_pitch;