1 /*****************************************************************************
2 * transform.c : transform image plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: transform.c,v 1.13 2003/08/22 13:38:03 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", 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 );
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 vlc_object_detach( p_vout->p_sys->p_vout );
234 vout_Destroy( p_vout->p_sys->p_vout );
236 free( p_vout->p_sys );
239 /*****************************************************************************
240 * Render: displays previously rendered output
241 *****************************************************************************
242 * This function send the currently rendered image to Transform image, waits
243 * until it is displayed and switch the two rendering buffers, preparing next
245 *****************************************************************************/
246 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
251 /* This is a new frame. Get a structure from the video_output. */
252 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
255 if( p_vout->b_die || p_vout->b_error )
259 msleep( VOUT_OUTMEM_SLEEP );
262 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
263 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
265 switch( p_vout->p_sys->i_mode )
267 case TRANSFORM_MODE_90:
268 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
270 int i_pitch = p_pic->p[i_index].i_pitch;
272 uint8_t *p_in = p_pic->p[i_index].p_pixels;
274 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
275 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
276 * p_outpic->p[i_index].i_pitch;
278 for( ; p_out < p_out_end ; )
282 p_out_end -= p_outpic->p[i_index].i_pitch
283 - p_outpic->p[i_index].i_visible_pitch;
284 p_line_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
286 for( ; p_in < p_line_end ; )
288 p_line_end -= i_pitch;
289 *(--p_out_end) = *p_line_end;
297 case TRANSFORM_MODE_180:
298 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
300 uint8_t *p_in = p_pic->p[i_index].p_pixels;
301 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
302 * p_pic->p[i_index].i_pitch;
304 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
306 for( ; p_in < p_in_end ; )
308 uint8_t *p_line_start = p_in_end
309 - p_pic->p[i_index].i_pitch;
310 p_in_end -= p_pic->p[i_index].i_pitch
311 - p_pic->p[i_index].i_visible_pitch;
313 for( ; p_line_start < p_in_end ; )
315 *p_out++ = *(--p_in_end);
318 p_out += p_outpic->p[i_index].i_pitch
319 - p_outpic->p[i_index].i_visible_pitch;
324 case TRANSFORM_MODE_270:
325 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
327 int i_pitch = p_pic->p[i_index].i_pitch;
329 uint8_t *p_in = p_pic->p[i_index].p_pixels;
331 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
332 uint8_t *p_out_end = p_out + p_outpic->p[i_index].i_lines
333 * p_outpic->p[i_index].i_pitch;
335 for( ; p_out < p_out_end ; )
339 p_in_end = p_in + p_pic->p[i_index].i_lines * i_pitch;
341 for( ; p_in < p_in_end ; )
344 *p_out++ = *p_in_end;
347 p_out += p_outpic->p[i_index].i_pitch
348 - p_outpic->p[i_index].i_visible_pitch;
354 case TRANSFORM_MODE_HFLIP:
355 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
357 uint8_t *p_in = p_pic->p[i_index].p_pixels;
358 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
359 * p_pic->p[i_index].i_pitch;
361 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
363 for( ; p_in < p_in_end ; )
365 p_in_end -= p_pic->p[i_index].i_pitch;
366 p_vout->p_vlc->pf_memcpy( p_out, p_in_end,
367 p_pic->p[i_index].i_visible_pitch );
368 p_out += p_pic->p[i_index].i_pitch;
373 case TRANSFORM_MODE_VFLIP:
374 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
376 uint8_t *p_in = p_pic->p[i_index].p_pixels;
377 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_lines
378 * p_pic->p[i_index].i_pitch;
380 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
382 for( ; p_in < p_in_end ; )
384 uint8_t *p_line_end = p_in
385 + p_pic->p[i_index].i_visible_pitch;
387 for( ; p_in < p_line_end ; )
389 *p_out++ = *(--p_line_end);
392 p_in += p_pic->p[i_index].i_pitch;
401 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
403 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
406 /*****************************************************************************
407 * SendEvents: forward mouse and keyboard events to the parent p_vout
408 *****************************************************************************/
409 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
410 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
412 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
413 vlc_value_t sentval = newval;
415 /* Translate the mouse coordinates */
416 if( !strcmp( psz_var, "mouse-x" ) )
418 switch( p_vout->p_sys->i_mode )
420 case TRANSFORM_MODE_270:
421 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
423 case TRANSFORM_MODE_90:
424 var_Set( p_vout, "mouse-y", sentval );
427 case TRANSFORM_MODE_180:
428 case TRANSFORM_MODE_HFLIP:
429 sentval.i_int = p_vout->p_sys->p_vout->output.i_width
433 case TRANSFORM_MODE_VFLIP:
438 else if( !strcmp( psz_var, "mouse-y" ) )
440 switch( p_vout->p_sys->i_mode )
442 case TRANSFORM_MODE_90:
443 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
445 case TRANSFORM_MODE_270:
446 var_Set( p_vout, "mouse-x", sentval );
449 case TRANSFORM_MODE_180:
450 case TRANSFORM_MODE_VFLIP:
451 sentval.i_int = p_vout->p_sys->p_vout->output.i_height
455 case TRANSFORM_MODE_HFLIP:
461 var_Set( p_vout, psz_var, sentval );