* 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>
*
* 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
#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
* 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 );
*****************************************************************************/
struct vout_sys_t
{
- vout_thread_t *p_vout;
+ 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
*****************************************************************************
if( p_vout->p_sys == NULL )
{
msg_Err( p_vout, "out of memory" );
- return( 1 );
+ return VLC_ENOMEM;
}
p_vout->pf_init = Init;
p_vout->pf_render = Render;
p_vout->pf_display = NULL;
- return( 0 );
+ return VLC_SUCCESS;
}
/*****************************************************************************
{
msg_Err( p_vout, "can't open vout, aborting" );
- return( 0 );
+ return VLC_EGENERIC;
}
-
+
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
- return( 0 );
+ return VLC_SUCCESS;
}
/*****************************************************************************
* Terminate an output method created by adjustCreateOutputMethod
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
-{
+{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
vout_Destroy( p_vout->p_sys->p_vout );
/*****************************************************************************
* Render: displays previously rendered output
*****************************************************************************
- * This function send the currently rendered image to adjust modified image,
+ * This function send the currently rendered image to adjust modified 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 )
{
+ 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];
- int i;
-
- /* This is a new frame. Get a structure from the video_output. */
+ uint8_t *p_in, *p_out, *p_in_u, *p_in_v, *p_in_end, *p_out_u, *p_out_v;
- 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);
+ 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. */
while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
return;
}
msleep( VOUT_OUTMEM_SLEEP );
- }
+ }
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++ )
+ /* 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;
+
+ /* 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++ )
{
+ 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;
- if ( i_index==0 )
+ for( ; p_in < p_in_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++ ];
+ }
- u8 *p_in, *p_in_end, *p_out;
+ p_in_end += 8;
- 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;
+ for( ; p_in < p_in_end ; )
+ {
+ *p_out++ = pi_luma[ *p_in++ ];
+ }
- for( i = 0 ; i < 256 ; i++ )
- {
- p_lum_func[ i ] = maxmin( (( i * cont ) >> 8 ) + lum + dec );
- }
+ /* 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;
-
- for( ; p_in < p_in_end ; )
- {
- /* Do 8 pixels at a time */
+ p_out_u = p_outpic->p[1].p_pixels;
+ p_out_v = p_outpic->p[2].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_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)
- eight_times( *p_out = p_lum_func[ *p_in ]; p_out++; p_in++; )
+ uint8_t i_u, i_v;
+ for( ; p_in_u < p_in_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_in_end += 8;
- for( ; p_in < p_in_end ; )
+ for( ; p_in_u < p_in_end ; )
{
- /* Do 1 pixel at a time */
- *p_out = p_lum_func[ *p_in ]; p_out++; p_in++;
+ WRITE_UV_CLIP();
}
}
else
- {
- if ( i_index==1 )
{
+#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
- u8 *p_in_u, *p_in_v, *p_in_end, *p_out_u, *p_out_v, i_u, i_v;
- s32 cospsin, cosmsin;
-
- 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[i_index].p_pixels;
- p_out_v = p_outpic->p[i_index + 1].p_pixels;
+ uint8_t i_u, i_v;
- cospsin = 32768 * ( cos(hue) + sin(hue) );
- cosmsin = 32768 * ( cos(hue) - sin(hue) );
-
- if ( i_sat > 256 )
+ for( ; p_in_u < p_in_end ; )
{
- 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++; )
-
- }
-
- 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++;
+ /* Do 8 pixels at a time */
+ WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
+ WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
+ }
+ p_in_end += 8;
- }
- }
- else
+ for( ; p_in_u < p_in_end ; )
{
- 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++; )
-
- }
-
- 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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