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vlc/modules/video_filter/motionblur.c
Antoine Cellerier 2cb472dba0 FSF address change.
2006-01-12 23:10:04 +00:00

380 lines
13 KiB
C
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/*****************************************************************************
* motion_blur.c : motion blur filter for vlc
*****************************************************************************
* Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
* $Id$
*
* Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h>
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include "filter_common.h"
/*****************************************************************************
* Local protypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static int Init ( vout_thread_t * );
static void End ( vout_thread_t * );
static void Render ( vout_thread_t *, picture_t * );
static void RenderBlur ( vout_thread_t *, picture_t *, picture_t *, picture_t * );
static void CopyPicture ( vout_thread_t*, picture_t *, picture_t * );
static int SendEvents( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define MODE_TEXT N_("Blur factor (1-127)")
#define MODE_LONGTEXT N_("The degree of blurring from 1 to 127.")
vlc_module_begin();
set_shortname( _("Motion blur") );
set_description( _("Motion blur filter") );
set_capability( "video filter", 0 );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
add_integer_with_range( "blur-factor", 80, 1, 127, NULL,
MODE_TEXT, MODE_LONGTEXT, VLC_FALSE );
set_callbacks( Create, Destroy );
vlc_module_end();
/*****************************************************************************
* vout_sys_t: Deinterlace video output method descriptor
*****************************************************************************
* This structure is part of the video output thread descriptor.
* It describes the Deinterlace specific properties of an output thread.
*****************************************************************************/
struct vout_sys_t
{
int i_factor; /* Deinterlace mode */
vlc_bool_t b_double_rate; /* Shall we double the framerate? */
mtime_t last_date;
mtime_t next_date;
vout_thread_t *p_vout;
picture_t *p_lastpic;
};
/*****************************************************************************
* Control: control facility for the vout (forwards to child vout)
*****************************************************************************/
static int Control( vout_thread_t *p_vout, int i_query, va_list args )
{
return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
}
/*****************************************************************************
* Create: allocates Deinterlace video thread output method
*****************************************************************************
* This function allocates and initializes a Deinterlace vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
/* Allocate structure */
p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
if( p_vout->p_sys == NULL )
{
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_vout->pf_init = Init;
p_vout->pf_end = End;
p_vout->pf_manage = NULL;
p_vout->pf_render = Render;
p_vout->pf_display = NULL;
p_vout->pf_control = Control;
p_vout->p_sys->i_factor = config_GetInt( p_vout, "blur-factor" );
p_vout->p_sys->b_double_rate = 0;
p_vout->p_sys->last_date = 0;
p_vout->p_sys->p_lastpic = NULL;
return VLC_SUCCESS;
}
/*****************************************************************************
* Init: initialize Deinterlace video thread output method
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
int i_index;
picture_t *p_pic;
video_format_t fmt = {0};
I_OUTPUTPICTURES = 0;
/* Initialize the output structure, full of directbuffers since we want
* the decoder to output directly to our structures. */
switch( p_vout->render.i_chroma )
{
case VLC_FOURCC('I','4','2','0'):
case VLC_FOURCC('I','Y','U','V'):
case VLC_FOURCC('Y','V','1','2'):
case VLC_FOURCC('I','4','2','2'):
p_vout->output.i_chroma = p_vout->render.i_chroma;
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->render.i_aspect;
p_vout->fmt_out = p_vout->fmt_in;
fmt = p_vout->fmt_out;
break;
default:
return VLC_EGENERIC; /* unknown chroma */
break;
}
msg_Dbg( p_vout, "spawning the real video output" );
switch( p_vout->render.i_chroma )
{
case VLC_FOURCC('I','4','2','0'):
case VLC_FOURCC('I','Y','U','V'):
case VLC_FOURCC('Y','V','1','2'):
p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
break;
default:
break;
}
/* Everything failed */
if( p_vout->p_sys->p_vout == NULL )
{
msg_Err( p_vout, "cannot open vout, aborting" );
return VLC_EGENERIC;
}
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
ADD_PARENT_CALLBACKS( SendEventsToChild );
return VLC_SUCCESS;
}
/*****************************************************************************
* End: terminate Deinterlace video thread output method
*****************************************************************************/
static void End( vout_thread_t *p_vout )
{
int i_index;
/* Free the fake output buffers we allocated */
for( i_index = I_OUTPUTPICTURES ; i_index ; )
{
i_index--;
free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
}
}
/*****************************************************************************
* Destroy: destroy Deinterlace video thread output method
*****************************************************************************
* Terminate an output method created by DeinterlaceCreateOutputMethod
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
if( p_vout->p_sys->p_vout )
{
DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
vlc_object_detach( p_vout->p_sys->p_vout );
vout_Destroy( p_vout->p_sys->p_vout );
}
DEL_PARENT_CALLBACKS( SendEventsToChild );
free( p_vout->p_sys );
}
/*****************************************************************************
* Render: displays previously rendered output
*****************************************************************************
* This function send the currently rendered image to Deinterlace image,
* waits until it is displayed and switch the two rendering buffers, preparing
* next frame.
*****************************************************************************/
static void Render ( vout_thread_t *p_vout, picture_t *p_pic )
{
picture_t * p_outpic;
while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
if( p_vout->b_die || p_vout->b_error )
{
return;
}
msleep( VOUT_OUTMEM_SLEEP );
}
vout_DatePicture( p_vout, p_outpic, p_pic->date );
if ( p_vout->p_sys->p_lastpic == NULL )
{
/* Get a new picture */
while( ( p_vout->p_sys->p_lastpic =
vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
if( p_vout->b_die || p_vout->b_error )
{
return;
}
msleep( VOUT_OUTMEM_SLEEP );
}
CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_pic );
CopyPicture( p_vout, p_outpic, p_pic );
vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
return;
}
/* Get a new picture */
RenderBlur( p_vout, p_vout->p_sys->p_lastpic, p_pic, p_outpic );
vout_DestroyPicture( p_vout, p_vout->p_sys->p_lastpic );
/* Get a new picture */
while( ( p_vout->p_sys->p_lastpic =
vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
if( p_vout->b_die || p_vout->b_error )
{
return;
}
msleep( VOUT_OUTMEM_SLEEP );
}
CopyPicture( p_vout, p_vout->p_sys->p_lastpic, p_outpic );
vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
}
/* FIXME: this is a verbatim copy from src/video_output/vout_pictures.c */
/* XXX: the order is fucked up!! */
static void CopyPicture( vout_thread_t * p_vout,
picture_t *p_dest, picture_t *p_src )
{
int i;
for( i = 0; i < p_src->i_planes ; i++ )
{
if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
{
/* There are margins, but with the same width : perfect ! */
p_vout->p_vlc->pf_memcpy(
p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
p_src->p[i].i_pitch * p_src->p[i].i_visible_lines );
}
else
{
/* We need to proceed line by line */
uint8_t *p_in = p_src->p[i].p_pixels;
uint8_t *p_out = p_dest->p[i].p_pixels;
int i_line;
for( i_line = p_src->p[i].i_visible_lines; i_line--; )
{
p_vout->p_vlc->pf_memcpy( p_out, p_in,
p_src->p[i].i_visible_pitch );
p_in += p_src->p[i].i_pitch;
p_out += p_dest->p[i].i_pitch;
}
}
}
}
/*****************************************************************************
* RenderBlur: renders a blurred picture
*****************************************************************************/
static void RenderBlur( vout_thread_t *p_vout, picture_t *p_oldpic,
picture_t *p_newpic, picture_t *p_outpic )
{
int i_plane;
int i_oldfactor = p_vout->p_sys->i_factor;
int i_newfactor = 128 - p_vout->p_sys->i_factor;
for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
{
uint8_t *p_old, *p_new, *p_out, *p_out_end, *p_out_line_end;
p_out = p_outpic->p[i_plane].p_pixels;
p_new = p_newpic->p[i_plane].p_pixels;
p_old = p_oldpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch *
p_outpic->p[i_plane].i_visible_lines;
while ( p_out < p_out_end )
{
p_out_line_end = p_out + p_outpic->p[i_plane].i_visible_pitch;
while ( p_out < p_out_line_end )
{
*p_out++ = (((*p_old++) * i_oldfactor) +
((*p_new++) * i_newfactor)) >> 7;
// *p_out++ = (*p_old++ >> 1) + (*p_new++ >> 1);
}
p_old += p_oldpic->p[i_plane].i_pitch
- p_oldpic->p[i_plane].i_visible_pitch;
p_new += p_newpic->p[i_plane].i_pitch
- p_newpic->p[i_plane].i_visible_pitch;
p_out += p_outpic->p[i_plane].i_pitch
- p_outpic->p[i_plane].i_visible_pitch;
}
}
}
/*****************************************************************************
* SendEvents: forward mouse and keyboard events to the parent p_vout
*****************************************************************************/
static int SendEvents( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
var_Set( (vlc_object_t *)p_data, psz_var, newval );
return VLC_SUCCESS;
}
/*****************************************************************************
* SendEventsToChild: forward events to the child/children vout
*****************************************************************************/
static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
var_Set( p_vout->p_sys->p_vout, psz_var, newval );
return VLC_SUCCESS;
}
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