1 /*****************************************************************************
2 * motion_blur.c : motion blur filter for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: motionblur.c,v 1.10 2003/03/30 18:14:38 gbazin Exp $
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
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")
55 #define MODE_LONGTEXT N_("The degree of blurring from 1 to 127")
58 add_category_hint( N_("Miscellaneous"), NULL, VLC_FALSE );
59 add_integer( "blur-factor", 80, NULL, MODE_TEXT, MODE_LONGTEXT, VLC_FALSE );
60 set_description( _("motion blur filter") );
61 set_capability( "video filter", 0 );
62 set_callbacks( Create, Destroy );
65 /*****************************************************************************
66 * vout_sys_t: Deinterlace video output method descriptor
67 *****************************************************************************
68 * This structure is part of the video output thread descriptor.
69 * It describes the Deinterlace specific properties of an output thread.
70 *****************************************************************************/
73 int i_factor; /* Deinterlace mode */
74 vlc_bool_t b_double_rate; /* Shall we double the framerate? */
79 vout_thread_t *p_vout;
83 /*****************************************************************************
84 * Create: allocates Deinterlace video thread output method
85 *****************************************************************************
86 * This function allocates and initializes a Deinterlace vout method.
87 *****************************************************************************/
88 static int Create( vlc_object_t *p_this )
90 vout_thread_t *p_vout = (vout_thread_t *)p_this;
92 /* Allocate structure */
93 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
94 if( p_vout->p_sys == NULL )
96 msg_Err( p_vout, "out of memory" );
100 p_vout->pf_init = Init;
101 p_vout->pf_end = End;
102 p_vout->pf_manage = NULL;
103 p_vout->pf_render = Render;
104 p_vout->pf_display = NULL;
106 p_vout->p_sys->i_factor = config_GetInt( p_vout, "blur-factor" );
107 p_vout->p_sys->b_double_rate = 0;
108 p_vout->p_sys->last_date = 0;
109 p_vout->p_sys->p_lastpic = NULL;
114 /*****************************************************************************
115 * Init: initialize Deinterlace video thread output method
116 *****************************************************************************/
117 static int Init( vout_thread_t *p_vout )
122 I_OUTPUTPICTURES = 0;
124 /* Initialize the output structure, full of directbuffers since we want
125 * the decoder to output directly to our structures. */
126 switch( p_vout->render.i_chroma )
128 case VLC_FOURCC('I','4','2','0'):
129 case VLC_FOURCC('I','Y','U','V'):
130 case VLC_FOURCC('Y','V','1','2'):
131 case VLC_FOURCC('I','4','2','2'):
132 p_vout->output.i_chroma = p_vout->render.i_chroma;
133 p_vout->output.i_width = p_vout->render.i_width;
134 p_vout->output.i_height = p_vout->render.i_height;
135 p_vout->output.i_aspect = p_vout->render.i_aspect;
139 return VLC_EGENERIC; /* unknown chroma */
143 msg_Dbg( p_vout, "spawning the real video output" );
145 switch( p_vout->render.i_chroma )
147 case VLC_FOURCC('I','4','2','0'):
148 case VLC_FOURCC('I','Y','U','V'):
149 case VLC_FOURCC('Y','V','1','2'):
150 p_vout->p_sys->p_vout = vout_Create( p_vout,
151 p_vout->output.i_width, p_vout->output.i_height,
152 p_vout->output.i_chroma, p_vout->output.i_aspect );
158 /* Everything failed */
159 if( p_vout->p_sys->p_vout == NULL )
161 msg_Err( p_vout, "cannot open vout, aborting" );
166 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
168 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
173 /*****************************************************************************
174 * End: terminate Deinterlace video thread output method
175 *****************************************************************************/
176 static void End( vout_thread_t *p_vout )
180 /* Free the fake output buffers we allocated */
181 for( i_index = I_OUTPUTPICTURES ; i_index ; )
184 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
188 /*****************************************************************************
189 * Destroy: destroy Deinterlace video thread output method
190 *****************************************************************************
191 * Terminate an output method created by DeinterlaceCreateOutputMethod
192 *****************************************************************************/
193 static void Destroy( vlc_object_t *p_this )
195 vout_thread_t *p_vout = (vout_thread_t *)p_this;
197 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
198 vlc_object_detach( p_vout->p_sys->p_vout );
199 vout_Destroy( p_vout->p_sys->p_vout );
201 free( p_vout->p_sys );
204 /*****************************************************************************
205 * Render: displays previously rendered output
206 *****************************************************************************
207 * This function send the currently rendered image to Deinterlace image,
208 * waits until it is displayed and switch the two rendering buffers, preparing
210 *****************************************************************************/
211 static void Render ( vout_thread_t *p_vout, picture_t *p_pic )
213 picture_t * p_outpic;
214 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
217 if( p_vout->b_die || p_vout->b_error )
221 msleep( VOUT_OUTMEM_SLEEP );
223 vout_DatePicture( p_vout, p_outpic, p_pic->date );
225 if ( p_vout->p_sys->p_lastpic == NULL )
227 /* Get a new picture */
228 while( ( p_vout->p_sys->p_lastpic =
229 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
232 if( p_vout->b_die || p_vout->b_error )
236 msleep( VOUT_OUTMEM_SLEEP );
238 CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_pic );
239 CopyPicture( p_vout, p_outpic, p_pic );
240 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
244 /* Get a new picture */
245 RenderBlur( p_vout, p_vout->p_sys->p_lastpic, p_pic, p_outpic );
246 vout_DestroyPicture( p_vout, p_vout->p_sys->p_lastpic );
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_outpic );
261 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
264 /* FIXME: this is a verbatim copy from src/video_output/vout_pictures.c */
265 /* XXX: the order is fucked up!! */
266 static void CopyPicture( vout_thread_t * p_vout,
267 picture_t *p_dest, picture_t *p_src )
271 for( i = 0; i < p_src->i_planes ; i++ )
273 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
275 /* There are margins, but with the same width : perfect ! */
276 p_vout->p_vlc->pf_memcpy(
277 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
278 p_src->p[i].i_pitch * p_src->p[i].i_lines );
282 /* We need to proceed line by line */
283 uint8_t *p_in = p_src->p[i].p_pixels;
284 uint8_t *p_out = p_dest->p[i].p_pixels;
287 for( i_line = p_src->p[i].i_lines; i_line--; )
289 p_vout->p_vlc->pf_memcpy( p_out, p_in,
290 p_src->p[i].i_visible_pitch );
291 p_in += p_src->p[i].i_pitch;
292 p_out += p_dest->p[i].i_pitch;
298 /*****************************************************************************
299 * RenderBlur: renders a blurred picture
300 *****************************************************************************/
301 static void RenderBlur( vout_thread_t *p_vout, picture_t *p_oldpic,
302 picture_t *p_newpic, picture_t *p_outpic )
305 int i_oldfactor = p_vout->p_sys->i_factor;
306 int i_newfactor = 128 - p_vout->p_sys->i_factor;
307 for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
309 uint8_t *p_old, *p_new, *p_out, *p_out_end, *p_out_line_end;
310 p_out = p_outpic->p[i_plane].p_pixels;
311 p_new = p_newpic->p[i_plane].p_pixels;
312 p_old = p_oldpic->p[i_plane].p_pixels;
313 p_out_end = p_out + p_outpic->p[i_plane].i_pitch *
314 p_outpic->p[i_plane].i_lines;
315 while ( p_out < p_out_end )
317 p_out_line_end = p_out + p_outpic->p[i_plane].i_visible_pitch;
319 while ( p_out < p_out_line_end )
321 *p_out++ = (((*p_old++) * i_oldfactor) +
322 ((*p_new++) * i_newfactor)) >> 7;
324 // *p_out++ = (*p_old++ >> 1) + (*p_new++ >> 1);
327 p_old += p_oldpic->p[i_plane].i_pitch
328 - p_oldpic->p[i_plane].i_visible_pitch;
329 p_new += p_newpic->p[i_plane].i_pitch
330 - p_newpic->p[i_plane].i_visible_pitch;
331 p_out += p_outpic->p[i_plane].i_pitch
332 - p_outpic->p[i_plane].i_visible_pitch;
337 /*****************************************************************************
338 * SendEvents: forward mouse and keyboard events to the parent p_vout
339 *****************************************************************************/
340 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
341 vlc_value_t oldval, vlc_value_t newval, void *p_data )
343 var_Set( (vlc_object_t *)p_data, psz_var, newval );