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Commit 4c4c4e48 authored by Sam Hocevar's avatar Sam Hocevar
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* ./modules/video_filter/adjust.c: rehandled code and enhanced the 

    config variables descriptions.
parent c8363465
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Showing with 115 additions and 148 deletions
modules/video_filter/adjust.c
View file @ 4c4c4e48
......@@ -2,7 +2,7 @@
* adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
*****************************************************************************
* Copyright (C) 2000, 2001 VideoLAN
* $Id: adjust.c,v 1.5 2003/01/06 00:37:30 garf Exp $
* $Id: adjust.c,v 1.6 2003/01/09 15:38:09 sam Exp $
*
* Authors: Simon Latapie <garf@via.ecp.fr>, Samuel Hocevar <sam@zoy.org>
*
......@@ -34,6 +34,9 @@
#include "filter_common.h"
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#define eight_times( x ) x x x x x x x x
......@@ -51,23 +54,23 @@ static void Render ( vout_thread_t *, picture_t * );
* Module descriptor
*****************************************************************************/
#define CONT_TEXT N_("Contrast")
#define CONT_LONGTEXT N_("Default to 1")
#define HUE_TEXT N_("Hue")
#define HUE_LONGTEXT N_("Between 0 and 360. Default to 0")
#define SAT_TEXT N_("Saturation")
#define SAT_LONGTEXT N_("Default to 1")
#define LUM_TEXT N_("Brightness")
#define LUM_LONGTEXT N_("Default to 1")
#define CONT_TEXT N_("set image contrast")
#define CONT_LONGTEXT N_("Set the image contrast. Defaults to 1")
#define HUE_TEXT N_("set image hue")
#define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0")
#define SAT_TEXT N_("set image saturation")
#define SAT_LONGTEXT N_("Set the image saturation. Defaults to 1")
#define LUM_TEXT N_("set image brightness")
#define LUM_LONGTEXT N_("Set the image brightness. Defaults to 1")
vlc_module_begin();
add_category_hint( N_("Miscellaneous"), NULL );
add_float_with_range( "Contrast", 1.0, 0.0, 2.0, NULL, CONT_TEXT, CONT_LONGTEXT );
add_float_with_range( "Brightness", 1.0, 0.0, 2.0, NULL, LUM_TEXT, LUM_LONGTEXT );
add_integer_with_range( "Hue", 0, 0, 360, NULL, HUE_TEXT, HUE_LONGTEXT );
add_float_with_range( "Saturation", 1.0, 0.0, 3.0, NULL, SAT_TEXT, SAT_LONGTEXT );
set_description( _("Contrast/Hue/Saturation/Brightness filter") );
add_category_hint( N_("Adjust"), NULL );
add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL, CONT_TEXT, CONT_LONGTEXT );
add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL, LUM_TEXT, LUM_LONGTEXT );
add_integer_with_range( "hue", 0, 0, 360, NULL, HUE_TEXT, HUE_LONGTEXT );
add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL, SAT_TEXT, SAT_LONGTEXT );
set_description( _("contrast/hue/saturation/brightness filter") );
set_capability( "video filter", 0 );
add_shortcut( "adjust" );
set_callbacks( Create, Destroy );
......@@ -84,17 +87,11 @@ struct vout_sys_t
vout_thread_t *p_vout;
};
inline static int32_t maxmin( int32_t a )
inline static int32_t clip( int32_t a )
{
if ( a > 255 )
return 255;
else if ( a < 0 )
return 0;
else
return a;
return (a > 255) ? 255 : (a < 0) ? 0 : a;
}
/*****************************************************************************
* Create: allocates adjust video thread output method
*****************************************************************************
......@@ -109,7 +106,7 @@ static int Create( vlc_object_t *p_this )
if( p_vout->p_sys == NULL )
{
msg_Err( p_vout, "out of memory" );
return( 1 );
return VLC_ENOMEM;
}
p_vout->pf_init = Init;
......@@ -118,7 +115,7 @@ static int Create( vlc_object_t *p_this )
p_vout->pf_render = Render;
p_vout->pf_display = NULL;
return( 0 );
return VLC_SUCCESS;
}
/*****************************************************************************
......@@ -149,12 +146,12 @@ static int Init( vout_thread_t *p_vout )
{
msg_Err( p_vout, "can't open vout, aborting" );
return( 0 );
return VLC_EGENERIC;
}
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
return( 0 );
return VLC_SUCCESS;
}
/*****************************************************************************
......@@ -195,34 +192,17 @@ static void Destroy( vlc_object_t *p_this )
*****************************************************************************/
static void Render( vout_thread_t *p_vout, picture_t *p_pic )
{
int pi_luma[256];
picture_t *p_outpic;
int i_index;
s32 cont;
s32 lum;
/* Contrast is a fast but cludged function, so I put this gap to be
cleaner :) */
s32 dec;
double hue;
int i_sat;
int i_Sin;
int i_Cos;
int p_lum_func[256];
uint8_t *p_in, *p_out, *p_in_u, *p_in_v, *p_in_end, *p_out_u, *p_out_v;
double f_hue;
int32_t i_cont, i_lum;
int i_sat, i_sin, i_cos, i_x, i_y;
int i;
/* This is a new frame. Get a structure from the video_output. */
cont = (s32) ( config_GetFloat( p_vout, "Contrast" ) * 255 );
lum = (s32) ( ( config_GetFloat( p_vout, "Brightness" ) * 255 ) - 255 );
hue = config_GetInt( p_vout, "Hue" ) * 3.14159 / 180 ; /* convert in radian */
i_sat = (int) ( config_GetFloat( p_vout, "Saturation" ) * 256 );
dec = 128 - ( cont / 2 );
i_Sin = (int) ( sin(hue) * 256);
i_Cos = (int) ( cos(hue) * 256);
while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
......@@ -236,124 +216,111 @@ cleaner :) */
vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
{
if ( i_index==0 )
{
u8 *p_in, *p_in_end, *p_out;
/* Get configuration variables */
i_cont = config_GetFloat( p_vout, "contrast" ) * 255;
i_lum = (config_GetFloat( p_vout, "brightness" ) - 1.0) * 255;
f_hue = config_GetInt( p_vout, "hue" ) * M_PI / 180;
i_sat = config_GetFloat( p_vout, "saturation" ) * 256;
p_in = p_pic->p[i_index].p_pixels;
p_in_end = p_in + p_pic->p[i_index].i_lines
* p_pic->p[i_index].i_pitch -8;
p_out = p_outpic->p[i_index].p_pixels;
/* Contrast is a fast but kludged function, so I put this gap to be
* cleaner :) */
i_lum += 128 - i_cont / 2;
/* Fill the luma lookup table */
for( i = 0 ; i < 256 ; i++ )
{
p_lum_func[ i ] = maxmin( (( i * cont ) >> 8 ) + lum + dec );
pi_luma[ i ] = clip( i_lum + i_cont * i / 256 );
}
/* Do the Y plane */
p_in = p_pic->p[0].p_pixels;
p_in_end = p_in + p_pic->p[0].i_lines * p_pic->p[0].i_pitch - 8;
p_out = p_outpic->p[0].p_pixels;
for( ; p_in < p_in_end ; )
{
/* Do 8 pixels at a time */
eight_times( *p_out = p_lum_func[ *p_in ]; p_out++; 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_out++ = pi_luma[ *p_in++ ];
}
p_in_end += 8;
for( ; p_in < p_in_end ; )
{
/* Do 1 pixel at a time */
*p_out = p_lum_func[ *p_in ]; p_out++; p_in++;
}
*p_out++ = pi_luma[ *p_in++ ];
}
else
{
if ( i_index==1 )
{
u8 *p_in_u, *p_in_v, *p_in_end, *p_out_u, *p_out_v, i_u, i_v;
s32 cospsin, cosmsin;
/* Do the U and V planes */
p_in_u = p_pic->p[1].p_pixels;
p_in_v = p_pic->p[2].p_pixels;
p_in_end = p_in_u + p_pic->p[1].i_lines * p_pic->p[1].i_pitch - 8;
p_in_u = p_pic->p[i_index].p_pixels;
p_in_v = p_pic->p[i_index + 1].p_pixels;
p_in_end = p_in_u + p_pic->p[i_index].i_lines
* p_pic->p[i_index].i_pitch -8;
p_out_u = p_outpic->p[1].p_pixels;
p_out_v = p_outpic->p[2].p_pixels;
p_out_u = p_outpic->p[i_index].p_pixels;
p_out_v = p_outpic->p[i_index + 1].p_pixels;
i_sin = sin(f_hue) * 256;
i_cos = cos(f_hue) * 256;
cospsin = 32768 * ( cos(hue) + sin(hue) );
cosmsin = 32768 * ( cos(hue) - sin(hue) );
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_u++ ; i_v = *p_in_v++ ; \
*p_out_u++ = clip( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
* i_sat) >> 8) + 128); \
*p_out_v++ = clip( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
* i_sat) >> 8) + 128)
uint8_t i_u, i_v;
for( ; p_in_u < p_in_end ; )
{
/* Do 8 pixels at a time */
eight_times( i_u = *p_in_u ;
i_v = *p_in_v ;
*p_out_u = maxmin( (( ((i_u * i_Cos + i_v * i_Sin - cospsin) >> 8) * i_sat) >> 8) + 128);
*p_out_v = maxmin( (( ((i_v * i_Cos - i_u * i_Sin - cosmsin) >> 8) * i_sat) >> 8) + 128);
p_out_u++; p_in_u++; p_out_v++; p_in_v++; )
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_in_end += 8;
for( ; p_in_u < p_in_end ; )
{
/* Do 1 pixel at a time */
i_u = *p_in_u ;
i_v = *p_in_v ;
*p_out_u = maxmin( (( ((i_u * i_Cos + i_v * i_Sin - cospsin) >> 8) * i_sat) >> 8) + 128);
*p_out_v = maxmin( (( ((i_v * i_Cos - i_u * i_Sin - cosmsin) >> 8) * i_sat) >> 8) + 128);
p_out_u++; p_in_u++; p_out_v++; p_in_v++;
WRITE_UV_CLIP();
}
}
else
{
#define WRITE_UV() \
i_u = *p_in_u++ ; i_v = *p_in_v++ ; \
*p_out_u++ = (( ((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_u < p_in_end ; )
{
/* Do 8 pixels at a time */
eight_times( i_u = *p_in_u ;
i_v = *p_in_v ;
*p_out_u = (( ((i_u * i_Cos + i_v * i_Sin - cospsin) >> 8) * i_sat) >> 8) + 128;
*p_out_v = (( ((i_v * i_Cos - i_u * i_Sin - cosmsin) >> 8) * i_sat) >> 8) + 128;
p_out_u++; p_in_u++; p_out_v++; p_in_v++; )
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
}
p_in_end += 8;
for( ; p_in_u < p_in_end ; )
{
/* Do 1 pixel at a time */
i_u = *p_in_u ;
i_v = *p_in_v ;
*p_out_u = (( ((i_u * i_Cos + i_v * i_Sin - cospsin) >> 8) * i_sat) >> 8) + 128;
*p_out_v = (( ((i_v * i_Cos - i_u * i_Sin - cosmsin) >> 8) * i_sat) >> 8) + 128;
p_out_u++; p_in_u++; p_out_v++; p_in_v++;
}
WRITE_UV();
}
}
}
}
vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
}
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