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vlc/modules/video_filter/adjust.c

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/*****************************************************************************
* adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
*****************************************************************************
* Copyright (C) 2000-2006 the VideoLAN team
* $Id$
*
* Authors: Simon Latapie <garf@via.ecp.fr>
* Antoine Cellerier <dionoea -at- videolan d0t 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 <errno.h>
#include <math.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc/vlc.h>
#include <vlc_sout.h>
#include <vlc_vout.h>
#include "vlc_filter.h"
#include "filter_picture.h"
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#define eight_times( x ) x x x x x x x x
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static picture_t *FilterPlanar( filter_t *, picture_t * );
static picture_t *FilterPacked( filter_t *, picture_t * );
static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval,
void *p_data );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define THRES_TEXT N_("Brightness threshold")
#define THRES_LONGTEXT N_("When this mode is enabled, pixels will be " \
"shown as black or white. The threshold value will be the brighness " \
"defined below." )
#define CONT_TEXT N_("Image contrast (0-2)")
#define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1.")
#define HUE_TEXT N_("Image hue (0-360)")
#define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0.")
#define SAT_TEXT N_("Image saturation (0-3)")
#define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1.")
#define LUM_TEXT N_("Image brightness (0-2)")
#define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1.")
#define GAMMA_TEXT N_("Image gamma (0-10)")
#define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1.")
vlc_module_begin();
set_description( _("Image properties filter") );
set_shortname( _("Image adjust" ));
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
set_capability( "video filter2", 0 );
add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL,
CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
add_integer_with_range( "hue", 0, 0, 360, NULL,
HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
add_bool( "brightness-threshold", 0, NULL,
THRES_TEXT, THRES_LONGTEXT, VLC_FALSE );
add_shortcut( "adjust" );
set_callbacks( Create, Destroy );
vlc_module_end();
static const char *ppsz_filter_options[] = {
"contrast", "brightness", "hue", "saturation", "gamma",
"brightness-threshold", NULL
};
/*****************************************************************************
* filter_sys_t: adjust filter method descriptor
*****************************************************************************/
struct filter_sys_t
{
double f_contrast;
double f_brightness;
int i_hue;
double f_saturation;
double f_gamma;
vlc_bool_t b_brightness_threshold;
};
/*****************************************************************************
* Create: allocates adjust video filter
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
switch( p_filter->fmt_in.video.i_chroma )
{
CASE_PLANAR_YUV
/* Planar YUV */
p_filter->pf_video_filter = FilterPlanar;
break;
CASE_PACKED_YUV_422
/* Packed YUV 4:2:2 */
p_filter->pf_video_filter = FilterPacked;
break;
default:
msg_Err( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_filter->fmt_in.video.i_chroma) );
return VLC_EGENERIC;
}
if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
{
msg_Err( p_filter, "Input and output chromas don't match" );
return VLC_EGENERIC;
}
/* 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;
/* needed to get options passed in transcode using the
* adjust{name=value} syntax */
config_ChainParse( p_filter, "", ppsz_filter_options,
p_filter->p_cfg );
p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
p_sys->b_brightness_threshold =
var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
var_AddCallback( p_filter, "contrast", AdjustCallback, p_sys );
var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
var_AddCallback( p_filter, "hue", AdjustCallback, p_sys );
var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
var_AddCallback( p_filter, "gamma", AdjustCallback, p_sys );
var_AddCallback( p_filter, "brightness-threshold",
AdjustCallback, p_sys );
return VLC_SUCCESS;
}
/*****************************************************************************
* Destroy: destroy adjust video filter
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
free( p_filter->p_sys );
}
/*****************************************************************************
* Run the filter on a Planar YUV picture
*****************************************************************************/
static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
{
int pi_luma[256];
int pi_gamma[256];
picture_t *p_outpic;
uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
uint8_t *p_out, *p_out_v;
vlc_bool_t b_thres;
double f_hue;
double f_gamma;
int32_t i_cont, i_lum;
int i_sat, i_sin, i_cos, i_x, i_y;
int i;
filter_sys_t *p_sys = p_filter->p_sys;
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;
}
/* Getvariables */
i_cont = (int)( p_sys->f_contrast * 255 );
i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
f_hue = (float)( p_sys->i_hue * M_PI / 180 );
i_sat = (int)( p_sys->f_saturation * 256 );
f_gamma = 1.0 / p_sys->f_gamma;
b_thres = p_sys->b_brightness_threshold;
/*
* Threshold mode drops out everything about luma, contrast and gamma.
*/
if( b_thres != VLC_TRUE )
{
/* Contrast is a fast but kludged function, so I put this gap to be
* cleaner :) */
i_lum += 128 - i_cont / 2;
/* Fill the gamma lookup table */
for( i = 0 ; i < 256 ; i++ )
{
pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
}
/* Fill the luma lookup table */
for( i = 0 ; i < 256 ; i++ )
{
pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
}
}
else
{
/*
* We get luma as threshold value: the higher it is, the darker is
* the image. Should I reverse this?
*/
for( i = 0 ; i < 256 ; i++ )
{
pi_luma[ i ] = (i < i_lum) ? 0 : 255;
}
/*
* Desaturates image to avoid that strange yellow halo...
*/
i_sat = 0;
}
/*
* Do the Y plane
*/
p_in = p_pic->p[Y_PLANE].p_pixels;
p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
* p_pic->p[Y_PLANE].i_pitch - 8;
p_out = p_outpic->p[Y_PLANE].p_pixels;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
*p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
*p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
*p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
*p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
}
p_line_end += 8;
for( ; p_in < p_line_end ; )
{
*p_out++ = pi_luma[ *p_in++ ];
}
p_in += p_pic->p[Y_PLANE].i_pitch
- p_pic->p[Y_PLANE].i_visible_pitch;
p_out += p_outpic->p[Y_PLANE].i_pitch
- p_outpic->p[Y_PLANE].i_visible_pitch;
}
/*
* Do the U and V planes
*/
p_in = p_pic->p[U_PLANE].p_pixels;
p_in_v = p_pic->p[V_PLANE].p_pixels;
p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
* p_pic->p[U_PLANE].i_pitch - 8;
p_out = p_outpic->p[U_PLANE].p_pixels;
p_out_v = p_outpic->p[V_PLANE].p_pixels;
i_sin = sin(f_hue) * 256;
i_cos = cos(f_hue) * 256;
i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
if ( i_sat > 256 )
{
#define WRITE_UV_CLIP() \
i_u = *p_in++ ; i_v = *p_in_v++ ; \
*p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
* i_sat) >> 8) + 128); \
*p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
* i_sat) >> 8) + 128)
uint8_t i_u, i_v;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
}
p_line_end += 8;
for( ; p_in < p_line_end ; )
{
WRITE_UV_CLIP();
}
p_in += p_pic->p[U_PLANE].i_pitch
- p_pic->p[U_PLANE].i_visible_pitch;
p_in_v += p_pic->p[V_PLANE].i_pitch
- p_pic->p[V_PLANE].i_visible_pitch;
p_out += p_outpic->p[U_PLANE].i_pitch
- p_outpic->p[U_PLANE].i_visible_pitch;
p_out_v += p_outpic->p[V_PLANE].i_pitch
- p_outpic->p[V_PLANE].i_visible_pitch;
}
#undef WRITE_UV_CLIP
}
else
{
#define WRITE_UV() \
i_u = *p_in++ ; i_v = *p_in_v++ ; \
*p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
* i_sat) >> 8) + 128; \
*p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
* i_sat) >> 8) + 128
uint8_t i_u, i_v;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
}
p_line_end += 8;
for( ; p_in < p_line_end ; )
{
WRITE_UV();
}
p_in += p_pic->p[U_PLANE].i_pitch
- p_pic->p[U_PLANE].i_visible_pitch;
p_in_v += p_pic->p[V_PLANE].i_pitch
- p_pic->p[V_PLANE].i_visible_pitch;
p_out += p_outpic->p[U_PLANE].i_pitch
- p_outpic->p[U_PLANE].i_visible_pitch;
p_out_v += p_outpic->p[V_PLANE].i_pitch
- p_outpic->p[V_PLANE].i_visible_pitch;
}
#undef WRITE_UV
}
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;
}
/*****************************************************************************
* Run the filter on a Packed YUV picture
*****************************************************************************/
static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
{
int pi_luma[256];
int pi_gamma[256];
picture_t *p_outpic;
uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
uint8_t *p_out, *p_out_v;
int i_y_offset, i_u_offset, i_v_offset;
int i_lines, i_visible_lines, i_pitch, i_visible_pitch;
vlc_bool_t b_thres;
double f_hue;
double f_gamma;
int32_t i_cont, i_lum;
int i_sat, i_sin, i_cos, i_x, i_y;
int i;
filter_sys_t *p_sys = p_filter->p_sys;
if( !p_pic ) return NULL;
i_lines = p_pic->p->i_lines;
i_visible_lines = p_pic->p->i_visible_lines;
i_pitch = p_pic->p->i_pitch;
i_visible_pitch = p_pic->p->i_visible_pitch;
if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
&i_u_offset, &i_v_offset ) != VLC_SUCCESS )
{
msg_Warn( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_pic->format.i_chroma) );
if( p_pic->pf_release )
p_pic->pf_release( 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;
}
/* Getvariables */
i_cont = (int)( p_sys->f_contrast * 255 );
i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
f_hue = (float)( p_sys->i_hue * M_PI / 180 );
i_sat = (int)( p_sys->f_saturation * 256 );
f_gamma = 1.0 / p_sys->f_gamma;
b_thres = p_sys->b_brightness_threshold;
/*
* Threshold mode drops out everything about luma, contrast and gamma.
*/
if( b_thres != VLC_TRUE )
{
/* Contrast is a fast but kludged function, so I put this gap to be
* cleaner :) */
i_lum += 128 - i_cont / 2;
/* Fill the gamma lookup table */
for( i = 0 ; i < 256 ; i++ )
{
pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
}
/* Fill the luma lookup table */
for( i = 0 ; i < 256 ; i++ )
{
pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
}
}
else
{
/*
* We get luma as threshold value: the higher it is, the darker is
* the image. Should I reverse this?
*/
for( i = 0 ; i < 256 ; i++ )
{
pi_luma[ i ] = (i < i_lum) ? 0 : 255;
}
/*
* Desaturates image to avoid that strange yellow halo...
*/
i_sat = 0;
}
/*
* Do the Y plane
*/
p_in = p_pic->p->p_pixels + i_y_offset;
p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
p_out = p_outpic->p->p_pixels + i_y_offset;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + i_visible_pitch - 8 * 4;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
}
p_line_end += 8 * 4;
for( ; p_in < p_line_end ; )
{
*p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
}
p_in += i_pitch - p_pic->p->i_visible_pitch;
p_out += i_pitch - p_outpic->p->i_visible_pitch;
}
/*
* Do the U and V planes
*/
p_in = p_pic->p->p_pixels + i_u_offset;
p_in_v = p_pic->p->p_pixels + i_v_offset;
p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
p_out = p_outpic->p->p_pixels + i_u_offset;
p_out_v = p_outpic->p->p_pixels + i_v_offset;
i_sin = sin(f_hue) * 256;
i_cos = cos(f_hue) * 256;
i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
if ( i_sat > 256 )
{
#define WRITE_UV_CLIP() \
i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
*p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
* i_sat) >> 8) + 128); \
p_out += 4; \
*p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
* i_sat) >> 8) + 128); \
p_out_v += 4
uint8_t i_u, i_v;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + i_visible_pitch - 8 * 4;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
WRITE_UV_CLIP(); WRITE_UV_CLIP();
}
p_line_end += 8 * 4;
for( ; p_in < p_line_end ; )
{
WRITE_UV_CLIP();
}
p_in += i_pitch - i_visible_pitch;
p_in_v += i_pitch - i_visible_pitch;
p_out += i_pitch - i_visible_pitch;
p_out_v += i_pitch - i_visible_pitch;
}
#undef WRITE_UV_CLIP
}
else
{
#define WRITE_UV() \
i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
*p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
* i_sat) >> 8) + 128; \
p_out += 4; \
*p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
* i_sat) >> 8) + 128; \
p_out_v += 4
uint8_t i_u, i_v;
for( ; p_in < p_in_end ; )
{
p_line_end = p_in + i_visible_pitch - 8 * 4;
for( ; p_in < p_line_end ; )
{
/* Do 8 pixels at a time */
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
}
p_line_end += 8 * 4;
for( ; p_in < p_line_end ; )
{
WRITE_UV();
}
p_in += i_pitch - i_visible_pitch;
p_in_v += i_pitch - i_visible_pitch;
p_out += i_pitch - i_visible_pitch;
p_out_v += i_pitch - i_visible_pitch;
}
#undef WRITE_UV
}
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;
}
static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval,
void *p_data )
{
VLC_UNUSED(p_this); VLC_UNUSED(oldval);
filter_sys_t *p_sys = (filter_sys_t *)p_data;
if( !strcmp( psz_var, "contrast" ) )
p_sys->f_contrast = newval.f_float;
else if( !strcmp( psz_var, "brightness" ) )
p_sys->f_brightness = newval.f_float;
else if( !strcmp( psz_var, "hue" ) )
p_sys->i_hue = newval.i_int;
else if( !strcmp( psz_var, "saturation" ) )
p_sys->f_saturation = newval.f_float;
else if( !strcmp( psz_var, "gamma" ) )
p_sys->f_gamma = newval.f_float;
else if( !strcmp( psz_var, "brightness-threshold" ) )
p_sys->b_brightness_threshold = newval.b_bool;
else
return VLC_EGENERIC;
return VLC_SUCCESS;
}
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