1 /*****************************************************************************
2 * motion_blur.c : motion blur filter for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.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 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
39 static void Destroy ( vlc_object_t * );
41 static int Init ( vout_thread_t * );
42 static void End ( vout_thread_t * );
43 static void Render ( vout_thread_t *, picture_t * );
45 static void RenderBlur ( vout_thread_t *, picture_t *, picture_t *, picture_t * );
46 static void CopyPicture ( vout_thread_t*, picture_t *, picture_t * );
48 static int SendEvents( vlc_object_t *, char const *,
49 vlc_value_t, vlc_value_t, void * );
51 /*****************************************************************************
53 *****************************************************************************/
54 #define MODE_TEXT N_("Blur factor (1-127)")
55 #define MODE_LONGTEXT N_("The degree of blurring from 1 to 127.")
58 set_shortname( _("Motion blur") );
59 set_description( _("Motion blur filter") );
60 set_capability( "video filter", 0 );
61 set_category( CAT_VIDEO );
62 set_subcategory( SUBCAT_VIDEO_VFILTER );
64 add_integer_with_range( "blur-factor", 80, 1, 127, NULL,
65 MODE_TEXT, MODE_LONGTEXT, VLC_FALSE );
67 set_callbacks( Create, Destroy );
70 /*****************************************************************************
71 * vout_sys_t: Deinterlace video output method descriptor
72 *****************************************************************************
73 * This structure is part of the video output thread descriptor.
74 * It describes the Deinterlace specific properties of an output thread.
75 *****************************************************************************/
78 int i_factor; /* Deinterlace mode */
79 vlc_bool_t b_double_rate; /* Shall we double the framerate? */
84 vout_thread_t *p_vout;
88 /*****************************************************************************
89 * Control: control facility for the vout (forwards to child vout)
90 *****************************************************************************/
91 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
93 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
96 /*****************************************************************************
97 * Create: allocates Deinterlace video thread output method
98 *****************************************************************************
99 * This function allocates and initializes a Deinterlace vout method.
100 *****************************************************************************/
101 static int Create( vlc_object_t *p_this )
103 vout_thread_t *p_vout = (vout_thread_t *)p_this;
105 /* Allocate structure */
106 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
107 if( p_vout->p_sys == NULL )
109 msg_Err( p_vout, "out of memory" );
113 p_vout->pf_init = Init;
114 p_vout->pf_end = End;
115 p_vout->pf_manage = NULL;
116 p_vout->pf_render = Render;
117 p_vout->pf_display = NULL;
118 p_vout->pf_control = Control;
120 p_vout->p_sys->i_factor = config_GetInt( p_vout, "blur-factor" );
121 p_vout->p_sys->b_double_rate = 0;
122 p_vout->p_sys->last_date = 0;
123 p_vout->p_sys->p_lastpic = NULL;
128 /*****************************************************************************
129 * Init: initialize Deinterlace video thread output method
130 *****************************************************************************/
131 static int Init( vout_thread_t *p_vout )
135 video_format_t fmt = {0};
137 I_OUTPUTPICTURES = 0;
139 /* Initialize the output structure, full of directbuffers since we want
140 * the decoder to output directly to our structures. */
141 switch( p_vout->render.i_chroma )
143 case VLC_FOURCC('I','4','2','0'):
144 case VLC_FOURCC('I','Y','U','V'):
145 case VLC_FOURCC('Y','V','1','2'):
146 case VLC_FOURCC('I','4','2','2'):
147 p_vout->output.i_chroma = p_vout->render.i_chroma;
148 p_vout->output.i_width = p_vout->render.i_width;
149 p_vout->output.i_height = p_vout->render.i_height;
150 p_vout->output.i_aspect = p_vout->render.i_aspect;
151 p_vout->fmt_out = p_vout->fmt_in;
152 fmt = p_vout->fmt_out;
156 return VLC_EGENERIC; /* unknown chroma */
160 msg_Dbg( p_vout, "spawning the real video output" );
162 switch( p_vout->render.i_chroma )
164 case VLC_FOURCC('I','4','2','0'):
165 case VLC_FOURCC('I','Y','U','V'):
166 case VLC_FOURCC('Y','V','1','2'):
167 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
173 /* Everything failed */
174 if( p_vout->p_sys->p_vout == NULL )
176 msg_Err( p_vout, "cannot open vout, aborting" );
181 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
183 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
185 ADD_PARENT_CALLBACKS( SendEventsToChild );
190 /*****************************************************************************
191 * End: terminate Deinterlace video thread output method
192 *****************************************************************************/
193 static void End( vout_thread_t *p_vout )
197 /* Free the fake output buffers we allocated */
198 for( i_index = I_OUTPUTPICTURES ; i_index ; )
201 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
205 /*****************************************************************************
206 * Destroy: destroy Deinterlace video thread output method
207 *****************************************************************************
208 * Terminate an output method created by DeinterlaceCreateOutputMethod
209 *****************************************************************************/
210 static void Destroy( vlc_object_t *p_this )
212 vout_thread_t *p_vout = (vout_thread_t *)p_this;
214 if( p_vout->p_sys->p_vout )
216 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
217 vlc_object_detach( p_vout->p_sys->p_vout );
218 vout_Destroy( p_vout->p_sys->p_vout );
221 DEL_PARENT_CALLBACKS( SendEventsToChild );
223 free( p_vout->p_sys );
226 /*****************************************************************************
227 * Render: displays previously rendered output
228 *****************************************************************************
229 * This function send the currently rendered image to Deinterlace image,
230 * waits until it is displayed and switch the two rendering buffers, preparing
232 *****************************************************************************/
233 static void Render ( vout_thread_t *p_vout, picture_t *p_pic )
235 picture_t * p_outpic;
236 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
239 if( p_vout->b_die || p_vout->b_error )
243 msleep( VOUT_OUTMEM_SLEEP );
245 vout_DatePicture( p_vout, p_outpic, p_pic->date );
247 if ( p_vout->p_sys->p_lastpic == NULL )
249 /* Get a new picture */
250 while( ( p_vout->p_sys->p_lastpic =
251 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 );
260 CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_pic );
261 CopyPicture( p_vout, p_outpic, p_pic );
262 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
266 /* Get a new picture */
267 RenderBlur( p_vout, p_vout->p_sys->p_lastpic, p_pic, p_outpic );
268 vout_DestroyPicture( p_vout, p_vout->p_sys->p_lastpic );
271 /* Get a new picture */
272 while( ( p_vout->p_sys->p_lastpic =
273 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
276 if( p_vout->b_die || p_vout->b_error )
280 msleep( VOUT_OUTMEM_SLEEP );
282 CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_outpic );
283 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
286 /* FIXME: this is a verbatim copy from src/video_output/vout_pictures.c */
287 /* XXX: the order is fucked up!! */
288 static void CopyPicture( vout_thread_t * p_vout,
289 picture_t *p_dest, picture_t *p_src )
293 for( i = 0; i < p_src->i_planes ; i++ )
295 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
297 /* There are margins, but with the same width : perfect ! */
298 p_vout->p_vlc->pf_memcpy(
299 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
300 p_src->p[i].i_pitch * p_src->p[i].i_visible_lines );
304 /* We need to proceed line by line */
305 uint8_t *p_in = p_src->p[i].p_pixels;
306 uint8_t *p_out = p_dest->p[i].p_pixels;
309 for( i_line = p_src->p[i].i_visible_lines; i_line--; )
311 p_vout->p_vlc->pf_memcpy( p_out, p_in,
312 p_src->p[i].i_visible_pitch );
313 p_in += p_src->p[i].i_pitch;
314 p_out += p_dest->p[i].i_pitch;
320 /*****************************************************************************
321 * RenderBlur: renders a blurred picture
322 *****************************************************************************/
323 static void RenderBlur( vout_thread_t *p_vout, picture_t *p_oldpic,
324 picture_t *p_newpic, picture_t *p_outpic )
327 int i_oldfactor = p_vout->p_sys->i_factor;
328 int i_newfactor = 128 - p_vout->p_sys->i_factor;
329 for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
331 uint8_t *p_old, *p_new, *p_out, *p_out_end, *p_out_line_end;
332 p_out = p_outpic->p[i_plane].p_pixels;
333 p_new = p_newpic->p[i_plane].p_pixels;
334 p_old = p_oldpic->p[i_plane].p_pixels;
335 p_out_end = p_out + p_outpic->p[i_plane].i_pitch *
336 p_outpic->p[i_plane].i_visible_lines;
337 while ( p_out < p_out_end )
339 p_out_line_end = p_out + p_outpic->p[i_plane].i_visible_pitch;
341 while ( p_out < p_out_line_end )
343 *p_out++ = (((*p_old++) * i_oldfactor) +
344 ((*p_new++) * i_newfactor)) >> 7;
346 // *p_out++ = (*p_old++ >> 1) + (*p_new++ >> 1);
349 p_old += p_oldpic->p[i_plane].i_pitch
350 - p_oldpic->p[i_plane].i_visible_pitch;
351 p_new += p_newpic->p[i_plane].i_pitch
352 - p_newpic->p[i_plane].i_visible_pitch;
353 p_out += p_outpic->p[i_plane].i_pitch
354 - p_outpic->p[i_plane].i_visible_pitch;
359 /*****************************************************************************
360 * SendEvents: forward mouse and keyboard events to the parent p_vout
361 *****************************************************************************/
362 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
363 vlc_value_t oldval, vlc_value_t newval, void *p_data )
365 var_Set( (vlc_object_t *)p_data, psz_var, newval );
370 /*****************************************************************************
371 * SendEventsToChild: forward events to the child/children vout
372 *****************************************************************************/
373 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
374 vlc_value_t oldval, vlc_value_t newval, void *p_data )
376 vout_thread_t *p_vout = (vout_thread_t *)p_this;
377 var_Set( p_vout->p_sys->p_vout, psz_var, newval );