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 );
69 add_string( "transform-type", "90", NULL,
70 TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
71 change_string_list( type_list, type_list_text, 0);
73 add_shortcut( "transform" );
74 set_callbacks( Create, Destroy );
77 /*****************************************************************************
78 * vout_sys_t: Transform video output method descriptor
79 *****************************************************************************
80 * This structure is part of the video output thread descriptor.
81 * It describes the Transform specific properties of an output thread.
82 *****************************************************************************/
86 vlc_bool_t b_rotation;
87 vout_thread_t *p_vout;
90 /*****************************************************************************
91 * Control: control facility for the vout (forwards to child vout)
92 *****************************************************************************/
93 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
95 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
98 /*****************************************************************************
99 * Create: allocates Transform video thread output method
100 *****************************************************************************
101 * This function allocates and initializes a Transform vout method.
102 *****************************************************************************/
103 static int Create( vlc_object_t *p_this )
105 vout_thread_t *p_vout = (vout_thread_t *)p_this;
108 /* Allocate structure */
109 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
110 if( p_vout->p_sys == NULL )
112 msg_Err( p_vout, "out of memory" );
116 p_vout->pf_init = Init;
117 p_vout->pf_end = End;
118 p_vout->pf_manage = NULL;
119 p_vout->pf_render = Render;
120 p_vout->pf_display = NULL;
121 p_vout->pf_control = Control;
123 /* Look what method was requested */
124 psz_method = config_GetPsz( p_vout, "transform-type" );
126 if( psz_method == NULL )
128 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
129 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
130 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
131 p_vout->p_sys->b_rotation = 1;
135 if( !strcmp( psz_method, "hflip" ) )
137 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
138 p_vout->p_sys->b_rotation = 0;
140 else if( !strcmp( psz_method, "vflip" ) )
142 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
143 p_vout->p_sys->b_rotation = 0;
145 else if( !strcmp( psz_method, "90" ) )
147 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
148 p_vout->p_sys->b_rotation = 1;
150 else if( !strcmp( psz_method, "180" ) )
152 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
153 p_vout->p_sys->b_rotation = 0;
155 else if( !strcmp( psz_method, "270" ) )
157 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
158 p_vout->p_sys->b_rotation = 1;
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;
173 /*****************************************************************************
174 * Init: initialize Transform video thread output method
175 *****************************************************************************/
176 static int Init( vout_thread_t *p_vout )
181 I_OUTPUTPICTURES = 0;
183 /* Initialize the output structure */
184 p_vout->output.i_chroma = p_vout->render.i_chroma;
185 p_vout->output.i_width = p_vout->render.i_width;
186 p_vout->output.i_height = p_vout->render.i_height;
187 p_vout->output.i_aspect = p_vout->render.i_aspect;
189 /* Try to open the real video output */
190 msg_Dbg( p_vout, "spawning the real video output" );
192 if( p_vout->p_sys->b_rotation )
194 p_vout->p_sys->p_vout = vout_Create( p_vout,
195 p_vout->render.i_height, p_vout->render.i_width,
196 p_vout->render.i_chroma,
197 (uint64_t)VOUT_ASPECT_FACTOR
198 * (uint64_t)VOUT_ASPECT_FACTOR
199 / (uint64_t)p_vout->render.i_aspect );
203 p_vout->p_sys->p_vout = vout_Create( p_vout,
204 p_vout->render.i_width, p_vout->render.i_height,
205 p_vout->render.i_chroma, p_vout->render.i_aspect );
208 /* Everything failed */
209 if( p_vout->p_sys->p_vout == NULL )
211 msg_Err( p_vout, "cannot open vout, aborting" );
215 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
217 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
219 ADD_PARENT_CALLBACKS( SendEventsToChild );
224 /*****************************************************************************
225 * End: terminate Transform video thread output method
226 *****************************************************************************/
227 static void End( vout_thread_t *p_vout )
231 /* Free the fake output buffers we allocated */
232 for( i_index = I_OUTPUTPICTURES ; i_index ; )
235 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
239 /*****************************************************************************
240 * Destroy: destroy Transform video thread output method
241 *****************************************************************************
242 * Terminate an output method created by TransformCreateOutputMethod
243 *****************************************************************************/
244 static void Destroy( vlc_object_t *p_this )
246 vout_thread_t *p_vout = (vout_thread_t *)p_this;
248 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
249 vlc_object_detach( p_vout->p_sys->p_vout );
250 vout_Destroy( p_vout->p_sys->p_vout );
252 DEL_PARENT_CALLBACKS( SendEventsToChild );
254 free( p_vout->p_sys );
257 /*****************************************************************************
258 * Render: displays previously rendered output
259 *****************************************************************************
260 * This function send the currently rendered image to Transform image, waits
261 * until it is displayed and switch the two rendering buffers, preparing next
263 *****************************************************************************/
264 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
269 /* This is a new frame. Get a structure from the video_output. */
270 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
273 if( p_vout->b_die || p_vout->b_error )
277 msleep( VOUT_OUTMEM_SLEEP );
280 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
281 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
283 switch( p_vout->p_sys->i_mode )
285 case TRANSFORM_MODE_90:
286 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
288 int i_pitch = p_pic->p[i_index].i_pitch;
290 uint8_t *p_in = p_pic->p[i_index].p_pixels;
292 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
293 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
294 * p_outpic->p[i_index].i_pitch;
296 for( ; p_out < p_out_end ; )
300 p_out_end -= p_outpic->p[i_index].i_pitch
301 - p_outpic->p[i_index].i_visible_pitch;
302 p_line_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
304 for( ; p_in < p_line_end ; )
306 p_line_end -= i_pitch;
307 *(--p_out_end) = *p_line_end;
315 case TRANSFORM_MODE_180:
316 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
318 uint8_t *p_in = p_pic->p[i_index].p_pixels;
319 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
320 * p_pic->p[i_index].i_pitch;
322 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
324 for( ; p_in < p_in_end ; )
326 uint8_t *p_line_start = p_in_end
327 - p_pic->p[i_index].i_pitch;
328 p_in_end -= p_pic->p[i_index].i_pitch
329 - p_pic->p[i_index].i_visible_pitch;
331 for( ; p_line_start < p_in_end ; )
333 *p_out++ = *(--p_in_end);
336 p_out += p_outpic->p[i_index].i_pitch
337 - p_outpic->p[i_index].i_visible_pitch;
342 case TRANSFORM_MODE_270:
343 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
345 int i_pitch = p_pic->p[i_index].i_pitch;
347 uint8_t *p_in = p_pic->p[i_index].p_pixels;
349 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
350 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
351 * p_outpic->p[i_index].i_pitch;
353 for( ; p_out < p_out_end ; )
357 p_in_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
359 for( ; p_in < p_in_end ; )
362 *p_out++ = *p_in_end;
365 p_out += p_outpic->p[i_index].i_pitch
366 - p_outpic->p[i_index].i_visible_pitch;
372 case TRANSFORM_MODE_HFLIP:
373 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
375 uint8_t *p_in = p_pic->p[i_index].p_pixels;
376 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
377 * p_pic->p[i_index].i_pitch;
379 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
381 for( ; p_in < p_in_end ; )
383 p_in_end -= p_pic->p[i_index].i_pitch;
384 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
385 p_pic->p[i_index].i_visible_pitch );
386 p_out += p_pic->p[i_index].i_pitch;
391 case TRANSFORM_MODE_VFLIP:
392 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
394 uint8_t *p_in = p_pic->p[i_index].p_pixels;
395 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
396 * p_pic->p[i_index].i_pitch;
398 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
400 for( ; p_in < p_in_end ; )
402 uint8_t *p_line_end = p_in
403 + p_pic->p[i_index].i_visible_pitch;
405 for( ; p_in < p_line_end ; )
407 *p_out++ = *(--p_line_end);
410 p_in += p_pic->p[i_index].i_pitch;
419 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
421 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
424 /*****************************************************************************
425 * SendEvents: forward mouse and keyboard events to the parent p_vout
426 *****************************************************************************/
427 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
428 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
430 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
431 vlc_value_t sentval = newval;
433 /* Translate the mouse coordinates */
434 if( !strcmp( psz_var, "mouse-x" ) )
436 switch( p_vout->p_sys->i_mode )
438 case TRANSFORM_MODE_270:
439 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
441 case TRANSFORM_MODE_90:
442 var_Set( p_vout, "mouse-y", sentval );
445 case TRANSFORM_MODE_180:
446 case TRANSFORM_MODE_HFLIP:
447 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
451 case TRANSFORM_MODE_VFLIP:
456 else if( !strcmp( psz_var, "mouse-y" ) )
458 switch( p_vout->p_sys->i_mode )
460 case TRANSFORM_MODE_90:
461 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
463 case TRANSFORM_MODE_270:
464 var_Set( p_vout, "mouse-x", sentval );
467 case TRANSFORM_MODE_180:
468 case TRANSFORM_MODE_VFLIP:
469 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
473 case TRANSFORM_MODE_HFLIP:
479 var_Set( p_vout, psz_var, sentval );
484 /*****************************************************************************
485 * SendEventsToChild: forward events to the child/children vout
486 *****************************************************************************/
487 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
488 vlc_value_t oldval, vlc_value_t newval, void *p_data )
490 vout_thread_t *p_vout = (vout_thread_t *)p_this;
491 var_Set( p_vout->p_sys->p_vout, psz_var, newval );