1 /*****************************************************************************
2 * transform.c : transform image plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: transform.c,v 1.14 2003/10/15 22:49:48 gbazin Exp $
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", NULL };
63 add_category_hint( N_("Miscellaneous"), NULL, VLC_FALSE );
64 add_string_from_list( "transform-type", "90", type_list, NULL,
65 TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
66 set_description( _("video transformation filter") );
67 set_capability( "video filter", 0 );
68 add_shortcut( "transform" );
69 set_callbacks( Create, Destroy );
72 /*****************************************************************************
73 * vout_sys_t: Transform video output method descriptor
74 *****************************************************************************
75 * This structure is part of the video output thread descriptor.
76 * It describes the Transform specific properties of an output thread.
77 *****************************************************************************/
81 vlc_bool_t b_rotation;
82 vout_thread_t *p_vout;
85 /*****************************************************************************
86 * Create: allocates Transform video thread output method
87 *****************************************************************************
88 * This function allocates and initializes a Transform vout method.
89 *****************************************************************************/
90 static int Create( vlc_object_t *p_this )
92 vout_thread_t *p_vout = (vout_thread_t *)p_this;
95 /* Allocate structure */
96 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
97 if( p_vout->p_sys == NULL )
99 msg_Err( p_vout, "out of memory" );
103 p_vout->pf_init = Init;
104 p_vout->pf_end = End;
105 p_vout->pf_manage = NULL;
106 p_vout->pf_render = Render;
107 p_vout->pf_display = NULL;
109 /* Look what method was requested */
110 psz_method = config_GetPsz( p_vout, "transform-type" );
112 if( psz_method == NULL )
114 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
115 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
116 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
117 p_vout->p_sys->b_rotation = 1;
121 if( !strcmp( psz_method, "hflip" ) )
123 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
124 p_vout->p_sys->b_rotation = 0;
126 else if( !strcmp( psz_method, "vflip" ) )
128 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
129 p_vout->p_sys->b_rotation = 0;
131 else if( !strcmp( psz_method, "90" ) )
133 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
134 p_vout->p_sys->b_rotation = 1;
136 else if( !strcmp( psz_method, "180" ) )
138 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
139 p_vout->p_sys->b_rotation = 0;
141 else if( !strcmp( psz_method, "270" ) )
143 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
144 p_vout->p_sys->b_rotation = 1;
148 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
149 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
150 p_vout->p_sys->b_rotation = 1;
159 /*****************************************************************************
160 * Init: initialize Transform video thread output method
161 *****************************************************************************/
162 static int Init( vout_thread_t *p_vout )
167 I_OUTPUTPICTURES = 0;
169 /* Initialize the output structure */
170 p_vout->output.i_chroma = p_vout->render.i_chroma;
171 p_vout->output.i_width = p_vout->render.i_width;
172 p_vout->output.i_height = p_vout->render.i_height;
173 p_vout->output.i_aspect = p_vout->render.i_aspect;
175 /* Try to open the real video output */
176 msg_Dbg( p_vout, "spawning the real video output" );
178 if( p_vout->p_sys->b_rotation )
180 p_vout->p_sys->p_vout = vout_Create( p_vout,
181 p_vout->render.i_height, p_vout->render.i_width,
182 p_vout->render.i_chroma,
183 (uint64_t)VOUT_ASPECT_FACTOR
184 * (uint64_t)VOUT_ASPECT_FACTOR
185 / (uint64_t)p_vout->render.i_aspect );
189 p_vout->p_sys->p_vout = vout_Create( p_vout,
190 p_vout->render.i_width, p_vout->render.i_height,
191 p_vout->render.i_chroma, p_vout->render.i_aspect );
194 /* Everything failed */
195 if( p_vout->p_sys->p_vout == NULL )
197 msg_Err( p_vout, "cannot open vout, aborting" );
201 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
203 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
205 ADD_PARENT_CALLBACKS( SendEventsToChild );
210 /*****************************************************************************
211 * End: terminate Transform video thread output method
212 *****************************************************************************/
213 static void End( vout_thread_t *p_vout )
217 /* Free the fake output buffers we allocated */
218 for( i_index = I_OUTPUTPICTURES ; i_index ; )
221 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
225 /*****************************************************************************
226 * Destroy: destroy Transform video thread output method
227 *****************************************************************************
228 * Terminate an output method created by TransformCreateOutputMethod
229 *****************************************************************************/
230 static void Destroy( vlc_object_t *p_this )
232 vout_thread_t *p_vout = (vout_thread_t *)p_this;
234 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
235 vlc_object_detach( p_vout->p_sys->p_vout );
236 vout_Destroy( p_vout->p_sys->p_vout );
238 DEL_PARENT_CALLBACKS( SendEventsToChild );
240 free( p_vout->p_sys );
243 /*****************************************************************************
244 * Render: displays previously rendered output
245 *****************************************************************************
246 * This function send the currently rendered image to Transform image, waits
247 * until it is displayed and switch the two rendering buffers, preparing next
249 *****************************************************************************/
250 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
255 /* This is a new frame. Get a structure from the video_output. */
256 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
259 if( p_vout->b_die || p_vout->b_error )
263 msleep( VOUT_OUTMEM_SLEEP );
266 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
267 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
269 switch( p_vout->p_sys->i_mode )
271 case TRANSFORM_MODE_90:
272 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
274 int i_pitch = p_pic->p[i_index].i_pitch;
276 uint8_t *p_in = p_pic->p[i_index].p_pixels;
278 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
279 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
280 * p_outpic->p[i_index].i_pitch;
282 for( ; p_out < p_out_end ; )
286 p_out_end -= p_outpic->p[i_index].i_pitch
287 - p_outpic->p[i_index].i_visible_pitch;
288 p_line_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
290 for( ; p_in < p_line_end ; )
292 p_line_end -= i_pitch;
293 *(--p_out_end) = *p_line_end;
301 case TRANSFORM_MODE_180:
302 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
304 uint8_t *p_in = p_pic->p[i_index].p_pixels;
305 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
306 * p_pic->p[i_index].i_pitch;
308 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
310 for( ; p_in < p_in_end ; )
312 uint8_t *p_line_start = p_in_end
313 - p_pic->p[i_index].i_pitch;
314 p_in_end -= p_pic->p[i_index].i_pitch
315 - p_pic->p[i_index].i_visible_pitch;
317 for( ; p_line_start < p_in_end ; )
319 *p_out++ = *(--p_in_end);
322 p_out += p_outpic->p[i_index].i_pitch
323 - p_outpic->p[i_index].i_visible_pitch;
328 case TRANSFORM_MODE_270:
329 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
331 int i_pitch = p_pic->p[i_index].i_pitch;
333 uint8_t *p_in = p_pic->p[i_index].p_pixels;
335 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
336 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
337 * p_outpic->p[i_index].i_pitch;
339 for( ; p_out < p_out_end ; )
343 p_in_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
345 for( ; p_in < p_in_end ; )
348 *p_out++ = *p_in_end;
351 p_out += p_outpic->p[i_index].i_pitch
352 - p_outpic->p[i_index].i_visible_pitch;
358 case TRANSFORM_MODE_HFLIP:
359 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
361 uint8_t *p_in = p_pic->p[i_index].p_pixels;
362 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
363 * p_pic->p[i_index].i_pitch;
365 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
367 for( ; p_in < p_in_end ; )
369 p_in_end -= p_pic->p[i_index].i_pitch;
370 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
371 p_pic->p[i_index].i_visible_pitch );
372 p_out += p_pic->p[i_index].i_pitch;
377 case TRANSFORM_MODE_VFLIP:
378 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
380 uint8_t *p_in = p_pic->p[i_index].p_pixels;
381 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
382 * p_pic->p[i_index].i_pitch;
384 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
386 for( ; p_in < p_in_end ; )
388 uint8_t *p_line_end = p_in
389 + p_pic->p[i_index].i_visible_pitch;
391 for( ; p_in < p_line_end ; )
393 *p_out++ = *(--p_line_end);
396 p_in += p_pic->p[i_index].i_pitch;
405 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
407 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
410 /*****************************************************************************
411 * SendEvents: forward mouse and keyboard events to the parent p_vout
412 *****************************************************************************/
413 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
414 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
416 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
417 vlc_value_t sentval = newval;
419 /* Translate the mouse coordinates */
420 if( !strcmp( psz_var, "mouse-x" ) )
422 switch( p_vout->p_sys->i_mode )
424 case TRANSFORM_MODE_270:
425 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
427 case TRANSFORM_MODE_90:
428 var_Set( p_vout, "mouse-y", sentval );
431 case TRANSFORM_MODE_180:
432 case TRANSFORM_MODE_HFLIP:
433 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
437 case TRANSFORM_MODE_VFLIP:
442 else if( !strcmp( psz_var, "mouse-y" ) )
444 switch( p_vout->p_sys->i_mode )
446 case TRANSFORM_MODE_90:
447 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
449 case TRANSFORM_MODE_270:
450 var_Set( p_vout, "mouse-x", sentval );
453 case TRANSFORM_MODE_180:
454 case TRANSFORM_MODE_VFLIP:
455 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
459 case TRANSFORM_MODE_HFLIP:
465 var_Set( p_vout, psz_var, sentval );
470 /*****************************************************************************
471 * SendEventsToChild: forward events to the child/children vout
472 *****************************************************************************/
473 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
474 vlc_value_t oldval, vlc_value_t newval, void *p_data )
476 vout_thread_t *p_vout = (vout_thread_t *)p_this;
477 var_Set( p_vout->p_sys->p_vout, psz_var, newval );