1 /*****************************************************************************
2 * motion_blur.c : motion blur filter for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: motionblur.c,v 1.15 2004/01/25 20:05:28 hartman 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 (1-127)")
55 #define MODE_LONGTEXT N_("The degree of blurring from 1 to 127")
58 set_description( _("Motion blur filter") );
59 set_capability( "video filter", 0 );
61 add_integer_with_range( "blur-factor", 80, 1, 127, NULL,
62 MODE_TEXT, MODE_LONGTEXT, VLC_FALSE );
64 set_callbacks( Create, Destroy );
67 /*****************************************************************************
68 * vout_sys_t: Deinterlace video output method descriptor
69 *****************************************************************************
70 * This structure is part of the video output thread descriptor.
71 * It describes the Deinterlace specific properties of an output thread.
72 *****************************************************************************/
75 int i_factor; /* Deinterlace mode */
76 vlc_bool_t b_double_rate; /* Shall we double the framerate? */
81 vout_thread_t *p_vout;
85 /*****************************************************************************
86 * Create: allocates Deinterlace video thread output method
87 *****************************************************************************
88 * This function allocates and initializes a Deinterlace vout method.
89 *****************************************************************************/
90 static int Create( vlc_object_t *p_this )
92 vout_thread_t *p_vout = (vout_thread_t *)p_this;
94 /* Allocate structure */
95 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
96 if( p_vout->p_sys == NULL )
98 msg_Err( p_vout, "out of memory" );
102 p_vout->pf_init = Init;
103 p_vout->pf_end = End;
104 p_vout->pf_manage = NULL;
105 p_vout->pf_render = Render;
106 p_vout->pf_display = NULL;
108 p_vout->p_sys->i_factor = config_GetInt( p_vout, "blur-factor" );
109 p_vout->p_sys->b_double_rate = 0;
110 p_vout->p_sys->last_date = 0;
111 p_vout->p_sys->p_lastpic = NULL;
116 /*****************************************************************************
117 * Init: initialize Deinterlace video thread output method
118 *****************************************************************************/
119 static int Init( vout_thread_t *p_vout )
124 I_OUTPUTPICTURES = 0;
126 /* Initialize the output structure, full of directbuffers since we want
127 * the decoder to output directly to our structures. */
128 switch( p_vout->render.i_chroma )
130 case VLC_FOURCC('I','4','2','0'):
131 case VLC_FOURCC('I','Y','U','V'):
132 case VLC_FOURCC('Y','V','1','2'):
133 case VLC_FOURCC('I','4','2','2'):
134 p_vout->output.i_chroma = p_vout->render.i_chroma;
135 p_vout->output.i_width = p_vout->render.i_width;
136 p_vout->output.i_height = p_vout->render.i_height;
137 p_vout->output.i_aspect = p_vout->render.i_aspect;
141 return VLC_EGENERIC; /* unknown chroma */
145 msg_Dbg( p_vout, "spawning the real video output" );
147 switch( p_vout->render.i_chroma )
149 case VLC_FOURCC('I','4','2','0'):
150 case VLC_FOURCC('I','Y','U','V'):
151 case VLC_FOURCC('Y','V','1','2'):
152 p_vout->p_sys->p_vout = vout_Create( p_vout,
153 p_vout->output.i_width, p_vout->output.i_height,
154 p_vout->output.i_chroma, p_vout->output.i_aspect );
160 /* Everything failed */
161 if( p_vout->p_sys->p_vout == NULL )
163 msg_Err( p_vout, "cannot open vout, aborting" );
168 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
170 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
172 ADD_PARENT_CALLBACKS( SendEventsToChild );
177 /*****************************************************************************
178 * End: terminate Deinterlace video thread output method
179 *****************************************************************************/
180 static void End( vout_thread_t *p_vout )
184 /* Free the fake output buffers we allocated */
185 for( i_index = I_OUTPUTPICTURES ; i_index ; )
188 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
192 /*****************************************************************************
193 * Destroy: destroy Deinterlace video thread output method
194 *****************************************************************************
195 * Terminate an output method created by DeinterlaceCreateOutputMethod
196 *****************************************************************************/
197 static void Destroy( vlc_object_t *p_this )
199 vout_thread_t *p_vout = (vout_thread_t *)p_this;
201 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
202 vlc_object_detach( p_vout->p_sys->p_vout );
203 vout_Destroy( p_vout->p_sys->p_vout );
205 DEL_PARENT_CALLBACKS( SendEventsToChild );
207 free( p_vout->p_sys );
210 /*****************************************************************************
211 * Render: displays previously rendered output
212 *****************************************************************************
213 * This function send the currently rendered image to Deinterlace image,
214 * waits until it is displayed and switch the two rendering buffers, preparing
216 *****************************************************************************/
217 static void Render ( vout_thread_t *p_vout, picture_t *p_pic )
219 picture_t * p_outpic;
220 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
223 if( p_vout->b_die || p_vout->b_error )
227 msleep( VOUT_OUTMEM_SLEEP );
229 vout_DatePicture( p_vout, p_outpic, p_pic->date );
231 if ( p_vout->p_sys->p_lastpic == NULL )
233 /* Get a new picture */
234 while( ( p_vout->p_sys->p_lastpic =
235 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
238 if( p_vout->b_die || p_vout->b_error )
242 msleep( VOUT_OUTMEM_SLEEP );
244 CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_pic );
245 CopyPicture( p_vout, p_outpic, p_pic );
246 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
250 /* Get a new picture */
251 RenderBlur( p_vout, p_vout->p_sys->p_lastpic, p_pic, p_outpic );
252 vout_DestroyPicture( p_vout, p_vout->p_sys->p_lastpic );
255 /* Get a new picture */
256 while( ( p_vout->p_sys->p_lastpic =
257 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
260 if( p_vout->b_die || p_vout->b_error )
264 msleep( VOUT_OUTMEM_SLEEP );
266 CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_outpic );
267 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
270 /* FIXME: this is a verbatim copy from src/video_output/vout_pictures.c */
271 /* XXX: the order is fucked up!! */
272 static void CopyPicture( vout_thread_t * p_vout,
273 picture_t *p_dest, picture_t *p_src )
277 for( i = 0; i < p_src->i_planes ; i++ )
279 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
281 /* There are margins, but with the same width : perfect ! */
282 p_vout->p_vlc->pf_memcpy(
283 p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
284 p_src->p[i].i_pitch * p_src->p[i].i_lines );
288 /* We need to proceed line by line */
289 uint8_t *p_in = p_src->p[i].p_pixels;
290 uint8_t *p_out = p_dest->p[i].p_pixels;
293 for( i_line = p_src->p[i].i_lines; i_line--; )
295 p_vout->p_vlc->pf_memcpy( p_out, p_in,
296 p_src->p[i].i_visible_pitch );
297 p_in += p_src->p[i].i_pitch;
298 p_out += p_dest->p[i].i_pitch;
304 /*****************************************************************************
305 * RenderBlur: renders a blurred picture
306 *****************************************************************************/
307 static void RenderBlur( vout_thread_t *p_vout, picture_t *p_oldpic,
308 picture_t *p_newpic, picture_t *p_outpic )
311 int i_oldfactor = p_vout->p_sys->i_factor;
312 int i_newfactor = 128 - p_vout->p_sys->i_factor;
313 for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
315 uint8_t *p_old, *p_new, *p_out, *p_out_end, *p_out_line_end;
316 p_out = p_outpic->p[i_plane].p_pixels;
317 p_new = p_newpic->p[i_plane].p_pixels;
318 p_old = p_oldpic->p[i_plane].p_pixels;
319 p_out_end = p_out + p_outpic->p[i_plane].i_pitch *
320 p_outpic->p[i_plane].i_lines;
321 while ( p_out < p_out_end )
323 p_out_line_end = p_out + p_outpic->p[i_plane].i_visible_pitch;
325 while ( p_out < p_out_line_end )
327 *p_out++ = (((*p_old++) * i_oldfactor) +
328 ((*p_new++) * i_newfactor)) >> 7;
330 // *p_out++ = (*p_old++ >> 1) + (*p_new++ >> 1);
333 p_old += p_oldpic->p[i_plane].i_pitch
334 - p_oldpic->p[i_plane].i_visible_pitch;
335 p_new += p_newpic->p[i_plane].i_pitch
336 - p_newpic->p[i_plane].i_visible_pitch;
337 p_out += p_outpic->p[i_plane].i_pitch
338 - p_outpic->p[i_plane].i_visible_pitch;
343 /*****************************************************************************
344 * SendEvents: forward mouse and keyboard events to the parent p_vout
345 *****************************************************************************/
346 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
347 vlc_value_t oldval, vlc_value_t newval, void *p_data )
349 var_Set( (vlc_object_t *)p_data, psz_var, newval );
354 /*****************************************************************************
355 * SendEventsToChild: forward events to the child/children vout
356 *****************************************************************************/
357 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
358 vlc_value_t oldval, vlc_value_t newval, void *p_data )
360 vout_thread_t *p_vout = (vout_thread_t *)p_this;
361 var_Set( p_vout->p_sys->p_vout, psz_var, newval );