Commit ef8b4b02 authored by dionoea's avatar dionoea

New erase video filter (to remove logos). Example command line: ./vlc...

New erase video filter (to remove logos). Example command line: ./vlc --video-filter "erase{mask=/home/dionoea/images/cone-small.png,x=50,y=50}" --no-audio --color -v -I rc ~/media/redefined-nintendo.mpg
parent eff628e2
......@@ -1174,7 +1174,7 @@ VLC_ADD_PLUGINS([packetizer_vc1])
if test "${SYS}" != "mingwce"; then
VLC_ADD_PLUGINS([access_fake access_filter_timeshift access_filter_record access_filter_dump])
VLC_ADD_PLUGINS([gestures rc telnet hotkeys netsync showintf marq podcast shout sap fake folder])
VLC_ADD_PLUGINS([rss mosaic wall motiondetect clone crop])
VLC_ADD_PLUGINS([rss mosaic wall motiondetect clone crop erase])
VLC_ADD_PLUGINS([i420_yuy2 i422_yuy2 i420_ymga])
VLC_ADD_PLUGINS([aout_file linear_resampler bandlimited_resampler])
VLC_ADD_PLUGINS([float32_mixer spdif_mixer simple_channel_mixer])
......
......@@ -29,4 +29,5 @@ SOURCES_puzzle = puzzle.c
SOURCES_colorthres = colorthres.c
SOURCES_extract = extract.c
SOURCES_sharpen = sharpen.c
SOURCES_erase = erase.c
noinst_HEADERS = filter_common.h
/*****************************************************************************
* erase.c : logo erase video filter
*****************************************************************************
* Copyright (C) 2007 the VideoLAN team
* $Id$
*
* Authors: Antoine Cellerier <dionoea -at- videolan -dot- 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 <math.h> /* sin(), cos() */
#include <vlc/vlc.h>
#include <vlc_sout.h>
#include <vlc_vout.h>
#include "vlc_image.h"
#include "vlc_filter.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static picture_t *Filter( filter_t *, picture_t * );
static void FilterErase( filter_t *, picture_t *, picture_t * );
static int EraseCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define MASK_TEXT N_("Image mask")
#define MASK_LONGTEXT N_("Image mask. Pixels with an alpha value greater than 50% will be erased.")
#define POSX_TEXT N_("X coordinate")
#define POSX_LONGTEXT N_("X coordinate of the mask.")
#define POSY_TEXT N_("Y coordinate")
#define POSY_LONGTEXT N_("Y coordinate of the mask.")
#define CFG_PREFIX "erase-"
vlc_module_begin();
set_description( _("Erase video filter") );
set_shortname( _( "Erase" ));
set_capability( "video filter2", 0 );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
add_file( CFG_PREFIX "mask", NULL, NULL,
MASK_TEXT, MASK_LONGTEXT, VLC_FALSE );
add_integer( CFG_PREFIX "x", 0, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
add_integer( CFG_PREFIX "y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
add_shortcut( "erase" );
set_callbacks( Create, Destroy );
vlc_module_end();
static const char *ppsz_filter_options[] = {
"mask", "x", "y", NULL
};
/*****************************************************************************
* filter_sys_t
*****************************************************************************/
struct filter_sys_t
{
int i_x;
int i_y;
picture_t *p_mask;
vlc_mutex_t lock;
};
static void LoadMask( filter_t *p_filter, const char *psz_filename )
{
image_handler_t *p_image;
video_format_t fmt_in = {0}, fmt_out = {0};
fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
if( p_filter->p_sys->p_mask )
p_filter->p_sys->p_mask->pf_release( p_filter->p_sys->p_mask );
p_image = image_HandlerCreate( p_filter );
p_filter->p_sys->p_mask =
image_ReadUrl( p_image, psz_filename, &fmt_in, &fmt_out );
image_HandlerDelete( p_image );
}
/*****************************************************************************
* Create
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
char *psz_filename;
/* Allocate structure */
p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_filter->p_sys == NULL )
{
msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
p_sys = p_filter->p_sys;
p_filter->pf_video_filter = Filter;
config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
p_filter->p_cfg );
psz_filename =
var_CreateGetNonEmptyStringCommand( p_filter, CFG_PREFIX "mask" );
if( !psz_filename )
{
msg_Err( p_filter, "Missing 'mask' option value." );
return VLC_EGENERIC;
}
p_sys->p_mask = NULL;
LoadMask( p_filter, psz_filename );
free( psz_filename );
p_sys->i_x = var_CreateGetIntegerCommand( p_filter, CFG_PREFIX "x" );
p_sys->i_y = var_CreateGetIntegerCommand( p_filter, CFG_PREFIX "y" );
var_AddCallback( p_filter, CFG_PREFIX "x", EraseCallback, p_sys );
var_AddCallback( p_filter, CFG_PREFIX "y", EraseCallback, p_sys );
var_AddCallback( p_filter, CFG_PREFIX "mask", EraseCallback, p_sys );
vlc_mutex_init( p_filter, &p_sys->lock );
return VLC_SUCCESS;
}
/*****************************************************************************
* Destroy
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
if( p_sys->p_mask )
p_sys->p_mask->pf_release( p_sys->p_mask );
vlc_mutex_destroy( &p_sys->lock );
free( p_filter->p_sys );
}
/*****************************************************************************
* Filter
*****************************************************************************/
static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
{
picture_t *p_outpic;
if( !p_pic ) return NULL;
p_outpic = p_filter->pf_vout_buffer_new( p_filter );
if( !p_outpic )
{
msg_Warn( p_filter, "can't get output picture" );
if( p_pic->pf_release )
p_pic->pf_release( p_pic );
return NULL;
}
/* Here */
FilterErase( p_filter, p_pic, p_outpic );
p_outpic->date = p_pic->date;
p_outpic->b_force = p_pic->b_force;
p_outpic->i_nb_fields = p_pic->i_nb_fields;
p_outpic->b_progressive = p_pic->b_progressive;
p_outpic->b_top_field_first = p_pic->b_top_field_first;
if( p_pic->pf_release )
p_pic->pf_release( p_pic );
return p_outpic;
}
/*****************************************************************************
* FilterErase
*****************************************************************************/
static void FilterErase( filter_t *p_filter, picture_t *p_inpic,
picture_t *p_outpic )
{
filter_sys_t *p_sys = p_filter->p_sys;
int i_plane;
const int i_mask_pitch = p_sys->p_mask->A_PITCH;
const int i_mask_visible_pitch = p_sys->p_mask->p[A_PLANE].i_visible_pitch;
const int i_mask_visible_lines = p_sys->p_mask->p[A_PLANE].i_visible_lines;
for( i_plane = 0; i_plane < p_inpic->i_planes; i_plane++ )
{
const int i_pitch = p_inpic->p[i_plane].i_pitch;
const int i_visible_pitch = p_inpic->p[i_plane].i_visible_pitch;
const int i_lines = p_inpic->p[i_plane].i_lines;
const int i_visible_lines = p_inpic->p[i_plane].i_visible_lines;
uint8_t *p_inpix = p_inpic->p[i_plane].p_pixels;
uint8_t *p_outpix = p_outpic->p[i_plane].p_pixels;
uint8_t *p_mask = p_sys->p_mask->A_PIXELS;
int x, y;
int i_height = i_mask_visible_lines;
int i_width = i_mask_visible_pitch;
if( i_plane )
{
i_height /= 2;
i_width /= 2;
}
i_height = __MIN( i_visible_lines - (i_plane?p_sys->i_y/2:p_sys->i_y), i_height );
i_width = __MIN( i_visible_pitch - (i_plane?p_sys->i_x/2:p_sys->i_x), i_width );
p_filter->p_libvlc->pf_memcpy( p_outpix, p_inpix, i_pitch * i_lines );
for( y = 0; y < i_height;
y++, p_mask += i_plane ? 2*i_mask_pitch : i_mask_pitch )
{
uint8_t prev, next;
int prev_x = 0, next_x = -1;
p_outpix = i_plane ?
p_outpic->p[i_plane].p_pixels
+ (p_sys->i_y/2+y)*i_pitch + (p_sys->i_x/2)
:
p_outpic->p[i_plane].p_pixels
+ (p_sys->i_y+y)*i_pitch + p_sys->i_x;
if( p_sys->i_x )
{
prev = *(p_outpix-1);
}
else if( y || p_sys->i_y )
{
prev = *(p_outpix-i_pitch);
}
else
{
prev = 0xff;
}
for( x = 0; x < i_width; x++ )
{
if( p_mask[i_plane?2*x:x] > 127 )
{
if( next_x <= prev_x )
{
int x0;
for( x0 = x; x0 < i_width; x0++ )
{
if( p_mask[i_plane?2*x0:x0] <= 127 )
{
next_x = x0;
next = p_outpix[x0];
break;
}
}
if( next_x <= prev_x )
{
if( x0 == x ) x0++;
if( (i_plane?p_sys->i_x/2:p_sys->i_x)+i_width >= i_visible_pitch )
{
next_x = x0;
next = prev;
}
else
{
next_x = x0;
next = p_outpix[x0];
}
}
}
/* interpolate new value */
p_outpix[x] = prev + (x-prev_x)*(next-prev)/(next_x-prev_x);
}
else
{
prev = p_outpix[x];
prev_x = x;
}
}
}
}
}
static int EraseCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
filter_sys_t *p_sys = (filter_sys_t *)p_data;
if( !strcmp( psz_var, CFG_PREFIX "x" ) )
{
vlc_mutex_lock( &p_sys->lock );
p_sys->i_x = newval.i_int;
vlc_mutex_unlock( &p_sys->lock );
}
else if( !strcmp( psz_var, CFG_PREFIX "y" ) )
{
vlc_mutex_lock( &p_sys->lock );
p_sys->i_y = newval.i_int;
vlc_mutex_unlock( &p_sys->lock );
}
else if( !strcmp( psz_var, CFG_PREFIX "mask" ) )
{
vlc_mutex_lock( &p_sys->lock );
LoadMask( (filter_t*)p_this, newval.psz_string );
vlc_mutex_unlock( &p_sys->lock );
}
else
{
msg_Warn( p_this, "Unknown callback command." );
}
return VLC_SUCCESS;
}
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