1 /*****************************************************************************
2 * transform.c : transform image plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: transform.c,v 1.9 2003/02/20 01:52:46 sigmunau 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( _("image transformation module") );
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 );
208 /*****************************************************************************
209 * End: terminate Transform video thread output method
210 *****************************************************************************/
211 static void End( vout_thread_t *p_vout )
215 /* Free the fake output buffers we allocated */
216 for( i_index = I_OUTPUTPICTURES ; i_index ; )
219 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
223 /*****************************************************************************
224 * Destroy: destroy Transform video thread output method
225 *****************************************************************************
226 * Terminate an output method created by TransformCreateOutputMethod
227 *****************************************************************************/
228 static void Destroy( vlc_object_t *p_this )
230 vout_thread_t *p_vout = (vout_thread_t *)p_this;
232 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
233 vout_Destroy( p_vout->p_sys->p_vout );
235 free( p_vout->p_sys );
238 /*****************************************************************************
239 * Render: displays previously rendered output
240 *****************************************************************************
241 * This function send the currently rendered image to Transform image, waits
242 * until it is displayed and switch the two rendering buffers, preparing next
244 *****************************************************************************/
245 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
250 /* This is a new frame. Get a structure from the video_output. */
251 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
254 if( p_vout->b_die || p_vout->b_error )
258 msleep( VOUT_OUTMEM_SLEEP );
261 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
262 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
264 switch( p_vout->p_sys->i_mode )
266 case TRANSFORM_MODE_90:
267 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
269 int i_pitch = p_pic->p[i_index].i_pitch;
271 uint8_t *p_in = p_pic->p[i_index].p_pixels;
273 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
274 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
275 * p_outpic->p[i_index].i_pitch;
277 for( ; p_out < p_out_end ; )
281 p_out_end -= p_outpic->p[i_index].i_pitch
282 - p_outpic->p[i_index].i_visible_pitch;
283 p_line_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
285 for( ; p_in < p_line_end ; )
287 p_line_end -= i_pitch;
288 *(--p_out_end) = *p_line_end;
296 case TRANSFORM_MODE_180:
297 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
299 uint8_t *p_in = p_pic->p[i_index].p_pixels;
300 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
301 * p_pic->p[i_index].i_pitch;
303 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
305 for( ; p_in < p_in_end ; )
307 uint8_t *p_line_start = p_in_end
308 - p_pic->p[i_index].i_pitch;
309 p_in_end -= p_pic->p[i_index].i_pitch
310 - p_pic->p[i_index].i_visible_pitch;
312 for( ; p_line_start < p_in_end ; )
314 *p_out++ = *(--p_in_end);
317 p_out += p_outpic->p[i_index].i_pitch
318 - p_outpic->p[i_index].i_visible_pitch;
323 case TRANSFORM_MODE_270:
324 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
326 int i_pitch = p_pic->p[i_index].i_pitch;
328 uint8_t *p_in = p_pic->p[i_index].p_pixels;
330 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
331 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
332 * p_outpic->p[i_index].i_pitch;
334 for( ; p_out < p_out_end ; )
338 p_in_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
340 for( ; p_in < p_in_end ; )
343 *p_out++ = *p_in_end;
346 p_out += p_outpic->p[i_index].i_pitch
347 - p_outpic->p[i_index].i_visible_pitch;
353 case TRANSFORM_MODE_VFLIP:
354 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
356 uint8_t *p_in = p_pic->p[i_index].p_pixels;
357 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
358 * p_pic->p[i_index].i_pitch;
360 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
362 for( ; p_in < p_in_end ; )
364 p_in_end -= p_pic->p[i_index].i_pitch;
365 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
366 p_pic->p[i_index].i_visible_pitch );
367 p_out += p_pic->p[i_index].i_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 uint8_t *p_line_end = p_in
384 + p_pic->p[i_index].i_visible_pitch;
386 for( ; p_in < p_line_end ; )
388 *p_out++ = *(--p_line_end);
391 p_in += p_pic->p[i_index].i_pitch;
400 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
402 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
405 /*****************************************************************************
406 * SendEvents: forward mouse and keyboard events to the parent p_vout
407 *****************************************************************************/
408 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
409 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
411 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
412 vlc_value_t sentval = newval;
414 /* Translate the mouse coordinates */
415 if( !strcmp( psz_var, "mouse-x" ) )
417 switch( p_vout->p_sys->i_mode )
419 case TRANSFORM_MODE_270:
420 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
422 case TRANSFORM_MODE_90:
423 var_Set( p_vout, "mouse-y", sentval );
426 case TRANSFORM_MODE_180:
427 case TRANSFORM_MODE_HFLIP:
428 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
432 case TRANSFORM_MODE_VFLIP:
437 else if( !strcmp( psz_var, "mouse-y" ) )
439 switch( p_vout->p_sys->i_mode )
441 case TRANSFORM_MODE_90:
442 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
444 case TRANSFORM_MODE_270:
445 var_Set( p_vout, "mouse-x", sentval );
448 case TRANSFORM_MODE_180:
449 case TRANSFORM_MODE_VFLIP:
450 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
454 case TRANSFORM_MODE_HFLIP:
460 var_Set( p_vout, psz_var, sentval );