1 /*****************************************************************************
2 * transform.c : transform image module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2004 VideoLAN
5 * $Id: transform.c,v 1.18 2004/01/25 20:05:28 hartman 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" };
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 * Create: allocates Transform video thread output method
92 *****************************************************************************
93 * This function allocates and initializes a Transform vout method.
94 *****************************************************************************/
95 static int Create( vlc_object_t *p_this )
97 vout_thread_t *p_vout = (vout_thread_t *)p_this;
100 /* Allocate structure */
101 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
102 if( p_vout->p_sys == NULL )
104 msg_Err( p_vout, "out of memory" );
108 p_vout->pf_init = Init;
109 p_vout->pf_end = End;
110 p_vout->pf_manage = NULL;
111 p_vout->pf_render = Render;
112 p_vout->pf_display = NULL;
114 /* Look what method was requested */
115 psz_method = config_GetPsz( p_vout, "transform-type" );
117 if( psz_method == NULL )
119 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
120 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
121 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
122 p_vout->p_sys->b_rotation = 1;
126 if( !strcmp( psz_method, "hflip" ) )
128 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
129 p_vout->p_sys->b_rotation = 0;
131 else if( !strcmp( psz_method, "vflip" ) )
133 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
134 p_vout->p_sys->b_rotation = 0;
136 else if( !strcmp( psz_method, "90" ) )
138 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
139 p_vout->p_sys->b_rotation = 1;
141 else if( !strcmp( psz_method, "180" ) )
143 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
144 p_vout->p_sys->b_rotation = 0;
146 else if( !strcmp( psz_method, "270" ) )
148 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
149 p_vout->p_sys->b_rotation = 1;
153 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
154 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
155 p_vout->p_sys->b_rotation = 1;
164 /*****************************************************************************
165 * Init: initialize Transform video thread output method
166 *****************************************************************************/
167 static int Init( vout_thread_t *p_vout )
172 I_OUTPUTPICTURES = 0;
174 /* Initialize the output structure */
175 p_vout->output.i_chroma = p_vout->render.i_chroma;
176 p_vout->output.i_width = p_vout->render.i_width;
177 p_vout->output.i_height = p_vout->render.i_height;
178 p_vout->output.i_aspect = p_vout->render.i_aspect;
180 /* Try to open the real video output */
181 msg_Dbg( p_vout, "spawning the real video output" );
183 if( p_vout->p_sys->b_rotation )
185 p_vout->p_sys->p_vout = vout_Create( p_vout,
186 p_vout->render.i_height, p_vout->render.i_width,
187 p_vout->render.i_chroma,
188 (uint64_t)VOUT_ASPECT_FACTOR
189 * (uint64_t)VOUT_ASPECT_FACTOR
190 / (uint64_t)p_vout->render.i_aspect );
194 p_vout->p_sys->p_vout = vout_Create( p_vout,
195 p_vout->render.i_width, p_vout->render.i_height,
196 p_vout->render.i_chroma, p_vout->render.i_aspect );
199 /* Everything failed */
200 if( p_vout->p_sys->p_vout == NULL )
202 msg_Err( p_vout, "cannot open vout, aborting" );
206 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
208 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
210 ADD_PARENT_CALLBACKS( SendEventsToChild );
215 /*****************************************************************************
216 * End: terminate Transform video thread output method
217 *****************************************************************************/
218 static void End( vout_thread_t *p_vout )
222 /* Free the fake output buffers we allocated */
223 for( i_index = I_OUTPUTPICTURES ; i_index ; )
226 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
230 /*****************************************************************************
231 * Destroy: destroy Transform video thread output method
232 *****************************************************************************
233 * Terminate an output method created by TransformCreateOutputMethod
234 *****************************************************************************/
235 static void Destroy( vlc_object_t *p_this )
237 vout_thread_t *p_vout = (vout_thread_t *)p_this;
239 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
240 vlc_object_detach( p_vout->p_sys->p_vout );
241 vout_Destroy( p_vout->p_sys->p_vout );
243 DEL_PARENT_CALLBACKS( SendEventsToChild );
245 free( p_vout->p_sys );
248 /*****************************************************************************
249 * Render: displays previously rendered output
250 *****************************************************************************
251 * This function send the currently rendered image to Transform image, waits
252 * until it is displayed and switch the two rendering buffers, preparing next
254 *****************************************************************************/
255 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
260 /* This is a new frame. Get a structure from the video_output. */
261 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
264 if( p_vout->b_die || p_vout->b_error )
268 msleep( VOUT_OUTMEM_SLEEP );
271 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
272 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
274 switch( p_vout->p_sys->i_mode )
276 case TRANSFORM_MODE_90:
277 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
279 int i_pitch = p_pic->p[i_index].i_pitch;
281 uint8_t *p_in = p_pic->p[i_index].p_pixels;
283 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
284 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
285 * p_outpic->p[i_index].i_pitch;
287 for( ; p_out < p_out_end ; )
291 p_out_end -= p_outpic->p[i_index].i_pitch
292 - p_outpic->p[i_index].i_visible_pitch;
293 p_line_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
295 for( ; p_in < p_line_end ; )
297 p_line_end -= i_pitch;
298 *(--p_out_end) = *p_line_end;
306 case TRANSFORM_MODE_180:
307 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
309 uint8_t *p_in = p_pic->p[i_index].p_pixels;
310 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
311 * p_pic->p[i_index].i_pitch;
313 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
315 for( ; p_in < p_in_end ; )
317 uint8_t *p_line_start = p_in_end
318 - p_pic->p[i_index].i_pitch;
319 p_in_end -= p_pic->p[i_index].i_pitch
320 - p_pic->p[i_index].i_visible_pitch;
322 for( ; p_line_start < p_in_end ; )
324 *p_out++ = *(--p_in_end);
327 p_out += p_outpic->p[i_index].i_pitch
328 - p_outpic->p[i_index].i_visible_pitch;
333 case TRANSFORM_MODE_270:
334 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
336 int i_pitch = p_pic->p[i_index].i_pitch;
338 uint8_t *p_in = p_pic->p[i_index].p_pixels;
340 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
341 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
342 * p_outpic->p[i_index].i_pitch;
344 for( ; p_out < p_out_end ; )
348 p_in_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
350 for( ; p_in < p_in_end ; )
353 *p_out++ = *p_in_end;
356 p_out += p_outpic->p[i_index].i_pitch
357 - p_outpic->p[i_index].i_visible_pitch;
363 case TRANSFORM_MODE_HFLIP:
364 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
366 uint8_t *p_in = p_pic->p[i_index].p_pixels;
367 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
368 * p_pic->p[i_index].i_pitch;
370 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
372 for( ; p_in < p_in_end ; )
374 p_in_end -= p_pic->p[i_index].i_pitch;
375 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
376 p_pic->p[i_index].i_visible_pitch );
377 p_out += p_pic->p[i_index].i_pitch;
382 case TRANSFORM_MODE_VFLIP:
383 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
385 uint8_t *p_in = p_pic->p[i_index].p_pixels;
386 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
387 * p_pic->p[i_index].i_pitch;
389 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
391 for( ; p_in < p_in_end ; )
393 uint8_t *p_line_end = p_in
394 + p_pic->p[i_index].i_visible_pitch;
396 for( ; p_in < p_line_end ; )
398 *p_out++ = *(--p_line_end);
401 p_in += p_pic->p[i_index].i_pitch;
410 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
412 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
415 /*****************************************************************************
416 * SendEvents: forward mouse and keyboard events to the parent p_vout
417 *****************************************************************************/
418 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
419 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
421 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
422 vlc_value_t sentval = newval;
424 /* Translate the mouse coordinates */
425 if( !strcmp( psz_var, "mouse-x" ) )
427 switch( p_vout->p_sys->i_mode )
429 case TRANSFORM_MODE_270:
430 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
432 case TRANSFORM_MODE_90:
433 var_Set( p_vout, "mouse-y", sentval );
436 case TRANSFORM_MODE_180:
437 case TRANSFORM_MODE_HFLIP:
438 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
442 case TRANSFORM_MODE_VFLIP:
447 else if( !strcmp( psz_var, "mouse-y" ) )
449 switch( p_vout->p_sys->i_mode )
451 case TRANSFORM_MODE_90:
452 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
454 case TRANSFORM_MODE_270:
455 var_Set( p_vout, "mouse-x", sentval );
458 case TRANSFORM_MODE_180:
459 case TRANSFORM_MODE_VFLIP:
460 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
464 case TRANSFORM_MODE_HFLIP:
470 var_Set( p_vout, psz_var, sentval );
475 /*****************************************************************************
476 * SendEventsToChild: forward events to the child/children vout
477 *****************************************************************************/
478 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
479 vlc_value_t oldval, vlc_value_t newval, void *p_data )
481 vout_thread_t *p_vout = (vout_thread_t *)p_this;
482 var_Set( p_vout->p_sys->p_vout, psz_var, newval );