1 /*****************************************************************************
2 * transform.c : transform image module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2004 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
33 #include "filter_common.h"
35 #define TRANSFORM_MODE_HFLIP 1
36 #define TRANSFORM_MODE_VFLIP 2
37 #define TRANSFORM_MODE_90 3
38 #define TRANSFORM_MODE_180 4
39 #define TRANSFORM_MODE_270 5
41 /*****************************************************************************
43 *****************************************************************************/
44 static int Create ( vlc_object_t * );
45 static void Destroy ( vlc_object_t * );
47 static int Init ( vout_thread_t * );
48 static void End ( vout_thread_t * );
49 static void Render ( vout_thread_t *, picture_t * );
51 static int SendEvents( vlc_object_t *, char const *,
52 vlc_value_t, vlc_value_t, void * );
54 /*****************************************************************************
56 *****************************************************************************/
57 #define TYPE_TEXT N_("Transform type")
58 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
60 static char *type_list[] = { "90", "180", "270", "hflip", "vflip" };
61 static char *type_list_text[] = { N_("Rotate by 90 degrees"),
62 N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
63 N_("Flip horizontally"), N_("Flip vertically") };
66 set_description( _("Video transformation filter") );
67 set_capability( "video filter", 0 );
68 set_category( CAT_VIDEO );
69 set_subcategory( SUBCAT_VIDEO_VFILTER );
71 add_string( "transform-type", "90", NULL,
72 TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
73 change_string_list( type_list, type_list_text, 0);
75 add_shortcut( "transform" );
76 set_callbacks( Create, Destroy );
79 /*****************************************************************************
80 * vout_sys_t: Transform video output method descriptor
81 *****************************************************************************
82 * This structure is part of the video output thread descriptor.
83 * It describes the Transform specific properties of an output thread.
84 *****************************************************************************/
88 vlc_bool_t b_rotation;
89 vout_thread_t *p_vout;
92 /*****************************************************************************
93 * Control: control facility for the vout (forwards to child vout)
94 *****************************************************************************/
95 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
97 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
100 /*****************************************************************************
101 * Create: allocates Transform video thread output method
102 *****************************************************************************
103 * This function allocates and initializes a Transform vout method.
104 *****************************************************************************/
105 static int Create( vlc_object_t *p_this )
107 vout_thread_t *p_vout = (vout_thread_t *)p_this;
110 /* Allocate structure */
111 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
112 if( p_vout->p_sys == NULL )
114 msg_Err( p_vout, "out of memory" );
118 p_vout->pf_init = Init;
119 p_vout->pf_end = End;
120 p_vout->pf_manage = NULL;
121 p_vout->pf_render = Render;
122 p_vout->pf_display = NULL;
123 p_vout->pf_control = Control;
125 /* Look what method was requested */
126 psz_method = config_GetPsz( p_vout, "transform-type" );
128 if( psz_method == NULL )
130 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
131 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
132 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
133 p_vout->p_sys->b_rotation = 1;
137 if( !strcmp( psz_method, "hflip" ) )
139 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
140 p_vout->p_sys->b_rotation = 0;
142 else if( !strcmp( psz_method, "vflip" ) )
144 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
145 p_vout->p_sys->b_rotation = 0;
147 else if( !strcmp( psz_method, "90" ) )
149 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
150 p_vout->p_sys->b_rotation = 1;
152 else if( !strcmp( psz_method, "180" ) )
154 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
155 p_vout->p_sys->b_rotation = 0;
157 else if( !strcmp( psz_method, "270" ) )
159 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
160 p_vout->p_sys->b_rotation = 1;
164 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
165 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
166 p_vout->p_sys->b_rotation = 1;
175 /*****************************************************************************
176 * Init: initialize Transform video thread output method
177 *****************************************************************************/
178 static int Init( vout_thread_t *p_vout )
183 I_OUTPUTPICTURES = 0;
185 /* Initialize the output structure */
186 p_vout->output.i_chroma = p_vout->render.i_chroma;
187 p_vout->output.i_width = p_vout->render.i_width;
188 p_vout->output.i_height = p_vout->render.i_height;
189 p_vout->output.i_aspect = p_vout->render.i_aspect;
191 /* Try to open the real video output */
192 msg_Dbg( p_vout, "spawning the real video output" );
194 if( p_vout->p_sys->b_rotation )
196 p_vout->p_sys->p_vout = vout_Create( p_vout,
197 p_vout->render.i_height, p_vout->render.i_width,
198 p_vout->render.i_chroma,
199 (uint64_t)VOUT_ASPECT_FACTOR
200 * (uint64_t)VOUT_ASPECT_FACTOR
201 / (uint64_t)p_vout->render.i_aspect );
205 p_vout->p_sys->p_vout = vout_Create( p_vout,
206 p_vout->render.i_width, p_vout->render.i_height,
207 p_vout->render.i_chroma, p_vout->render.i_aspect );
210 /* Everything failed */
211 if( p_vout->p_sys->p_vout == NULL )
213 msg_Err( p_vout, "cannot open vout, aborting" );
217 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
219 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
221 ADD_PARENT_CALLBACKS( SendEventsToChild );
226 /*****************************************************************************
227 * End: terminate Transform video thread output method
228 *****************************************************************************/
229 static void End( vout_thread_t *p_vout )
233 /* Free the fake output buffers we allocated */
234 for( i_index = I_OUTPUTPICTURES ; i_index ; )
237 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
241 /*****************************************************************************
242 * Destroy: destroy Transform video thread output method
243 *****************************************************************************
244 * Terminate an output method created by TransformCreateOutputMethod
245 *****************************************************************************/
246 static void Destroy( vlc_object_t *p_this )
248 vout_thread_t *p_vout = (vout_thread_t *)p_this;
250 if( p_vout->p_sys->p_vout )
252 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
253 vlc_object_detach( p_vout->p_sys->p_vout );
254 vout_Destroy( p_vout->p_sys->p_vout );
257 DEL_PARENT_CALLBACKS( SendEventsToChild );
259 free( p_vout->p_sys );
262 /*****************************************************************************
263 * Render: displays previously rendered output
264 *****************************************************************************
265 * This function send the currently rendered image to Transform image, waits
266 * until it is displayed and switch the two rendering buffers, preparing next
268 *****************************************************************************/
269 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
274 /* This is a new frame. Get a structure from the video_output. */
275 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
278 if( p_vout->b_die || p_vout->b_error )
282 msleep( VOUT_OUTMEM_SLEEP );
285 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
286 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
288 switch( p_vout->p_sys->i_mode )
290 case TRANSFORM_MODE_90:
291 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
293 int i_pitch = p_pic->p[i_index].i_pitch;
295 uint8_t *p_in = p_pic->p[i_index].p_pixels;
297 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
298 uint8_t *p_out_end = p_out +
299 p_outpic->p[i_index].i_visible_lines *
300 p_outpic->p[i_index].i_pitch;
302 for( ; p_out < p_out_end ; )
306 p_out_end -= p_outpic->p[i_index].i_pitch
307 - p_outpic->p[i_index].i_visible_pitch;
308 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
311 for( ; p_in < p_line_end ; )
313 p_line_end -= i_pitch;
314 *(--p_out_end) = *p_line_end;
322 case TRANSFORM_MODE_180:
323 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
325 uint8_t *p_in = p_pic->p[i_index].p_pixels;
326 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
327 * p_pic->p[i_index].i_pitch;
329 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
331 for( ; p_in < p_in_end ; )
333 uint8_t *p_line_start = p_in_end
334 - p_pic->p[i_index].i_pitch;
335 p_in_end -= p_pic->p[i_index].i_pitch
336 - p_pic->p[i_index].i_visible_pitch;
338 for( ; p_line_start < p_in_end ; )
340 *p_out++ = *(--p_in_end);
343 p_out += p_outpic->p[i_index].i_pitch
344 - p_outpic->p[i_index].i_visible_pitch;
349 case TRANSFORM_MODE_270:
350 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
352 int i_pitch = p_pic->p[i_index].i_pitch;
354 uint8_t *p_in = p_pic->p[i_index].p_pixels;
356 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
357 uint8_t *p_out_end = p_out +
358 p_outpic->p[i_index].i_visible_lines *
359 p_outpic->p[i_index].i_pitch;
361 for( ; p_out < p_out_end ; )
365 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
368 for( ; p_in < p_in_end ; )
371 *p_out++ = *p_in_end;
374 p_out += p_outpic->p[i_index].i_pitch
375 - p_outpic->p[i_index].i_visible_pitch;
381 case TRANSFORM_MODE_HFLIP:
382 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
384 uint8_t *p_in = p_pic->p[i_index].p_pixels;
385 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
386 * p_pic->p[i_index].i_pitch;
388 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
390 for( ; p_in < p_in_end ; )
392 p_in_end -= p_pic->p[i_index].i_pitch;
393 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
394 p_pic->p[i_index].i_visible_pitch );
395 p_out += p_pic->p[i_index].i_pitch;
400 case TRANSFORM_MODE_VFLIP:
401 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
403 uint8_t *p_in = p_pic->p[i_index].p_pixels;
404 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
405 * p_pic->p[i_index].i_pitch;
407 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
409 for( ; p_in < p_in_end ; )
411 uint8_t *p_line_end = p_in
412 + p_pic->p[i_index].i_visible_pitch;
414 for( ; p_in < p_line_end ; )
416 *p_out++ = *(--p_line_end);
419 p_in += p_pic->p[i_index].i_pitch;
428 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
430 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
433 /*****************************************************************************
434 * SendEvents: forward mouse and keyboard events to the parent p_vout
435 *****************************************************************************/
436 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
437 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
439 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
440 vlc_value_t sentval = newval;
442 /* Translate the mouse coordinates */
443 if( !strcmp( psz_var, "mouse-x" ) )
445 switch( p_vout->p_sys->i_mode )
447 case TRANSFORM_MODE_270:
448 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
450 case TRANSFORM_MODE_90:
451 var_Set( p_vout, "mouse-y", sentval );
454 case TRANSFORM_MODE_180:
455 case TRANSFORM_MODE_HFLIP:
456 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
460 case TRANSFORM_MODE_VFLIP:
465 else if( !strcmp( psz_var, "mouse-y" ) )
467 switch( p_vout->p_sys->i_mode )
469 case TRANSFORM_MODE_90:
470 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
472 case TRANSFORM_MODE_270:
473 var_Set( p_vout, "mouse-x", sentval );
476 case TRANSFORM_MODE_180:
477 case TRANSFORM_MODE_VFLIP:
478 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
482 case TRANSFORM_MODE_HFLIP:
488 var_Set( p_vout, psz_var, sentval );
493 /*****************************************************************************
494 * SendEventsToChild: forward events to the child/children vout
495 *****************************************************************************/
496 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
497 vlc_value_t oldval, vlc_value_t newval, void *p_data )
499 vout_thread_t *p_vout = (vout_thread_t *)p_this;
500 var_Set( p_vout->p_sys->p_vout, psz_var, newval );