2010-11-15 20:20:14 +01:00
|
|
|
/*****************************************************************************
|
|
|
|
* sepia.c : Sepia video plugin for vlc
|
|
|
|
*****************************************************************************
|
|
|
|
* Copyright (C) 2010 the VideoLAN team
|
|
|
|
* $Id$
|
|
|
|
*
|
|
|
|
* Authors: Branko Kokanovic <branko.kokanovic@gmail.com>
|
|
|
|
*
|
|
|
|
* 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
|
|
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
# include "config.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <vlc_common.h>
|
|
|
|
#include <vlc_plugin.h>
|
2011-03-27 13:02:52 +02:00
|
|
|
#include <vlc_filter.h>
|
2011-04-09 19:58:24 +02:00
|
|
|
#include <vlc_cpu.h>
|
2010-11-15 20:20:14 +01:00
|
|
|
|
|
|
|
#include <assert.h>
|
|
|
|
#include "filter_picture.h"
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* Local prototypes
|
|
|
|
*****************************************************************************/
|
|
|
|
static int Create ( vlc_object_t * );
|
|
|
|
static void Destroy ( vlc_object_t * );
|
|
|
|
|
|
|
|
static void RVSepia( picture_t *, picture_t *, int );
|
|
|
|
static void PlanarI420Sepia( picture_t *, picture_t *, int);
|
|
|
|
static void PackedYUVSepia( picture_t *, picture_t *, int);
|
|
|
|
static picture_t *Filter( filter_t *, picture_t * );
|
|
|
|
static const char *const ppsz_filter_options[] = {
|
|
|
|
"intensity", NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* Module descriptor
|
|
|
|
*****************************************************************************/
|
|
|
|
#define SEPIA_INTENSITY_TEXT N_("Sepia intensity")
|
|
|
|
#define SEPIA_INTENSITY_LONGTEXT N_("Intensity of sepia effect" )
|
|
|
|
|
|
|
|
#define CFG_PREFIX "sepia-"
|
|
|
|
|
|
|
|
vlc_module_begin ()
|
|
|
|
set_description( N_("Sepia video filter") )
|
|
|
|
set_shortname( N_("Sepia" ) )
|
|
|
|
set_help( N_("Gives video a warmer tone by applying sepia effect") )
|
|
|
|
set_category( CAT_VIDEO )
|
|
|
|
set_subcategory( SUBCAT_VIDEO_VFILTER )
|
|
|
|
set_capability( "video filter2", 0 )
|
2011-06-27 17:50:09 +02:00
|
|
|
add_integer_with_range( CFG_PREFIX "intensity", 120, 0, 255,
|
2010-11-15 20:20:14 +01:00
|
|
|
SEPIA_INTENSITY_TEXT, SEPIA_INTENSITY_LONGTEXT,
|
|
|
|
false )
|
|
|
|
set_callbacks( Create, Destroy )
|
|
|
|
vlc_module_end ()
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* callback prototypes
|
|
|
|
*****************************************************************************/
|
|
|
|
static int FilterCallback( vlc_object_t *, char const *,
|
|
|
|
vlc_value_t, vlc_value_t, void * );
|
|
|
|
|
|
|
|
typedef void (*SepiaFunction)( picture_t *, picture_t *, int );
|
|
|
|
|
|
|
|
static const struct
|
|
|
|
{
|
|
|
|
vlc_fourcc_t i_chroma;
|
|
|
|
SepiaFunction pf_sepia;
|
|
|
|
} p_sepia_cfg[] = {
|
|
|
|
{ VLC_CODEC_I420, PlanarI420Sepia },
|
|
|
|
{ VLC_CODEC_RGB24, RVSepia },
|
|
|
|
{ VLC_CODEC_RGB32, RVSepia },
|
|
|
|
{ VLC_CODEC_UYVY, PackedYUVSepia },
|
|
|
|
{ VLC_CODEC_VYUY, PackedYUVSepia },
|
|
|
|
{ VLC_CODEC_YUYV, PackedYUVSepia },
|
|
|
|
{ VLC_CODEC_YVYU, PackedYUVSepia },
|
|
|
|
{ 0, NULL }
|
|
|
|
};
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* filter_sys_t: adjust filter method descriptor
|
|
|
|
*****************************************************************************/
|
|
|
|
struct filter_sys_t
|
|
|
|
{
|
|
|
|
SepiaFunction pf_sepia;
|
|
|
|
int i_intensity;
|
|
|
|
vlc_spinlock_t lock;
|
|
|
|
};
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* Create: allocates Sepia video thread output method
|
|
|
|
*****************************************************************************
|
|
|
|
* This function allocates and initializes a Sepia vout method.
|
|
|
|
*****************************************************************************/
|
|
|
|
static int Create( vlc_object_t *p_this )
|
|
|
|
{
|
|
|
|
filter_t *p_filter = (filter_t *)p_this;
|
|
|
|
filter_sys_t *p_sys;
|
|
|
|
|
|
|
|
/* Allocate structure */
|
|
|
|
p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
|
|
|
|
if( p_filter->p_sys == NULL )
|
|
|
|
return VLC_ENOMEM;
|
|
|
|
|
|
|
|
p_sys->pf_sepia = NULL;
|
|
|
|
|
|
|
|
for( int i = 0; p_sepia_cfg[i].i_chroma != 0; i++ )
|
|
|
|
{
|
|
|
|
if( p_sepia_cfg[i].i_chroma != p_filter->fmt_in.video.i_chroma )
|
|
|
|
continue;
|
|
|
|
p_sys->pf_sepia = p_sepia_cfg[i].pf_sepia;
|
|
|
|
}
|
|
|
|
|
|
|
|
if( p_sys->pf_sepia == NULL )
|
|
|
|
{
|
|
|
|
msg_Err( p_filter, "Unsupported input chroma (%4.4s)",
|
|
|
|
(char*)&(p_filter->fmt_in.video.i_chroma) );
|
|
|
|
free( p_sys );
|
|
|
|
return VLC_EGENERIC;
|
|
|
|
}
|
|
|
|
|
|
|
|
config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
|
|
|
|
p_filter->p_cfg );
|
|
|
|
p_sys->i_intensity= var_CreateGetIntegerCommand( p_filter,
|
|
|
|
CFG_PREFIX "intensity" );
|
|
|
|
|
|
|
|
vlc_spin_init( &p_sys->lock );
|
|
|
|
|
|
|
|
var_AddCallback( p_filter, CFG_PREFIX "intensity", FilterCallback, NULL );
|
|
|
|
|
|
|
|
p_filter->pf_video_filter = Filter;
|
|
|
|
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* Destroy: destroy sepia video thread output method
|
|
|
|
*****************************************************************************
|
|
|
|
* Terminate an output method
|
|
|
|
*****************************************************************************/
|
|
|
|
static void Destroy( vlc_object_t *p_this )
|
|
|
|
{
|
|
|
|
filter_t *p_filter = (filter_t *)p_this;
|
|
|
|
|
|
|
|
var_DelCallback( p_filter, CFG_PREFIX "intensity", FilterCallback, NULL );
|
|
|
|
|
|
|
|
vlc_spin_destroy( &p_filter->p_sys->lock );
|
|
|
|
free( p_filter->p_sys );
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* Render: displays previously rendered output
|
|
|
|
*****************************************************************************
|
|
|
|
* This function send the currently rendered image to sepia image, waits
|
|
|
|
* until it is displayed and switch the two rendering buffers, preparing next
|
|
|
|
* frame.
|
|
|
|
*****************************************************************************/
|
|
|
|
static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
|
|
|
|
{
|
|
|
|
picture_t *p_outpic;
|
|
|
|
int intensity;
|
|
|
|
|
|
|
|
if( !p_pic ) return NULL;
|
|
|
|
|
|
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
|
|
vlc_spin_lock( &p_sys->lock );
|
|
|
|
intensity = p_sys->i_intensity;
|
|
|
|
vlc_spin_unlock( &p_sys->lock );
|
|
|
|
|
|
|
|
p_outpic = filter_NewPicture( p_filter );
|
|
|
|
if( !p_outpic )
|
|
|
|
{
|
|
|
|
msg_Warn( p_filter, "can't get output picture" );
|
|
|
|
picture_Release( p_pic );
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
p_sys->pf_sepia( p_pic, p_outpic, intensity );
|
|
|
|
|
|
|
|
return CopyInfoAndRelease( p_outpic, p_pic );
|
|
|
|
}
|
|
|
|
|
2011-09-14 00:32:39 +02:00
|
|
|
#if defined(CAN_COMPILE_SSE2)
|
|
|
|
/*****************************************************************************
|
|
|
|
* Sepia8ySSE2
|
|
|
|
*****************************************************************************
|
|
|
|
* This function applies sepia effect to eight bytes of yellow using SSE4.1
|
|
|
|
* instructions. It copies those 8 bytes to 128b register and fills the gaps
|
|
|
|
* with zeroes and following operations are made with word-operating instructs.
|
|
|
|
*****************************************************************************/
|
|
|
|
static inline void Sepia8ySSE2(uint8_t * dst, const uint8_t * src,
|
|
|
|
int i_intensity_spread)
|
|
|
|
{
|
|
|
|
__asm__ volatile (
|
|
|
|
// y = y - y / 4 + i_intensity / 4
|
|
|
|
"movq (%1), %%xmm1\n"
|
|
|
|
"punpcklbw %%xmm7, %%xmm1\n"
|
|
|
|
"movq (%1), %%xmm2\n" // store bytes as words with 0s in between
|
|
|
|
"punpcklbw %%xmm7, %%xmm2\n"
|
|
|
|
"movd %2, %%xmm3\n"
|
|
|
|
"pshufd $0, %%xmm3, %%xmm3\n"
|
|
|
|
"psrlw $2, %%xmm2\n" // rotate right 2
|
|
|
|
"psubusb %%xmm1, %%xmm2\n" // subtract
|
|
|
|
"psrlw $2, %%xmm3\n"
|
|
|
|
"paddsb %%xmm1, %%xmm3\n" // add
|
|
|
|
"packuswb %%xmm2, %%xmm1\n" // pack back to bytes
|
|
|
|
"movq %%xmm1, (%0) \n" // load to dest
|
|
|
|
:
|
|
|
|
:"r" (dst), "r"(src), "r"(i_intensity_spread)
|
|
|
|
:"memory");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2010-11-15 20:20:14 +01:00
|
|
|
/*****************************************************************************
|
|
|
|
* PlanarI420Sepia: Applies sepia to one frame of the planar I420 video
|
|
|
|
*****************************************************************************
|
|
|
|
* This function applies sepia effect to one frame of the video by iterating
|
|
|
|
* through video lines. We iterate for every two lines and for every two pixels
|
|
|
|
* in line to calculate new sepia values for four y components as well for u
|
|
|
|
* and v components.
|
|
|
|
*****************************************************************************/
|
|
|
|
static void PlanarI420Sepia( picture_t *p_pic, picture_t *p_outpic,
|
|
|
|
int i_intensity )
|
|
|
|
{
|
2011-04-09 19:58:23 +02:00
|
|
|
// prepared values to copy for U and V channels
|
|
|
|
const uint8_t filling_const_8u = 128 - i_intensity / 6;
|
|
|
|
const uint8_t filling_const_8v = 128 + i_intensity / 14;
|
2011-04-09 19:58:24 +02:00
|
|
|
|
2011-06-27 17:50:09 +02:00
|
|
|
#if defined(CAN_COMPILE_SSE2)
|
|
|
|
if (vlc_CPU() & CPU_CAPABILITY_SSE2)
|
2010-11-15 20:20:14 +01:00
|
|
|
{
|
2011-06-27 17:50:09 +02:00
|
|
|
/* prepared value for faster broadcasting in xmm register */
|
|
|
|
int i_intensity_spread = 0x10001 * (uint8_t) i_intensity;
|
|
|
|
|
|
|
|
__asm__ volatile(
|
|
|
|
"pxor %%xmm7, %%xmm7\n"
|
|
|
|
::);
|
2011-04-09 19:58:24 +02:00
|
|
|
|
2010-11-15 20:20:14 +01:00
|
|
|
/* iterate for every two visible line in the frame */
|
2011-04-09 19:58:24 +02:00
|
|
|
for (int y = 0; y < p_pic->p[Y_PLANE].i_visible_lines - 1; y += 2)
|
2010-11-15 20:20:14 +01:00
|
|
|
{
|
2011-04-09 19:58:24 +02:00
|
|
|
const int i_dy_line1_start = y * p_outpic->p[Y_PLANE].i_pitch;
|
|
|
|
const int i_dy_line2_start =
|
|
|
|
(y + 1) * p_outpic->p[Y_PLANE].i_pitch;
|
|
|
|
const int i_du_line_start =
|
|
|
|
(y / 2) * p_outpic->p[U_PLANE].i_pitch;
|
|
|
|
const int i_dv_line_start =
|
|
|
|
(y / 2) * p_outpic->p[V_PLANE].i_pitch;
|
|
|
|
int x = 0;
|
|
|
|
/* iterate for every visible line in the frame (eight values at once) */
|
2011-06-27 17:50:09 +02:00
|
|
|
for ( ; x < p_pic->p[Y_PLANE].i_visible_pitch - 15; x += 16 )
|
2011-04-09 19:58:24 +02:00
|
|
|
{
|
|
|
|
/* Compute yellow channel values with asm function */
|
2011-06-27 17:50:09 +02:00
|
|
|
Sepia8ySSE2(
|
|
|
|
&p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x],
|
|
|
|
&p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x],
|
|
|
|
i_intensity_spread );
|
|
|
|
Sepia8ySSE2(
|
|
|
|
&p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x],
|
|
|
|
&p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x],
|
|
|
|
i_intensity_spread );
|
|
|
|
Sepia8ySSE2(
|
|
|
|
&p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 8],
|
|
|
|
&p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 8],
|
|
|
|
i_intensity_spread );
|
|
|
|
Sepia8ySSE2(
|
|
|
|
&p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 8],
|
|
|
|
&p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 8],
|
|
|
|
i_intensity_spread );
|
|
|
|
/* Copy precomputed values to destination memory location */
|
|
|
|
vlc_memset(
|
|
|
|
&p_outpic->p[U_PLANE].p_pixels[i_du_line_start + (x / 2)],
|
|
|
|
filling_const_8u, 8 );
|
|
|
|
vlc_memset(
|
|
|
|
&p_outpic->p[V_PLANE].p_pixels[i_dv_line_start + (x / 2)],
|
|
|
|
filling_const_8v, 8 );
|
2011-04-09 19:58:24 +02:00
|
|
|
}
|
|
|
|
/* Completing the job, the cycle above takes really big chunks, so
|
|
|
|
this makes sure the job will be done completely */
|
2011-06-27 17:50:09 +02:00
|
|
|
for ( ; x < p_pic->p[Y_PLANE].i_visible_pitch - 1; x += 2 )
|
2011-04-09 19:58:24 +02:00
|
|
|
{
|
|
|
|
// y = y - y/4 {to prevent overflow} + intensity / 4
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
// u = 128 {half => B&W} - intensity / 6
|
|
|
|
p_outpic->p[U_PLANE].p_pixels[i_du_line_start + (x / 2)] =
|
|
|
|
filling_const_8u;
|
|
|
|
// v = 128 {half => B&W} + intensity / 14
|
|
|
|
p_outpic->p[V_PLANE].p_pixels[i_dv_line_start + (x / 2)] =
|
|
|
|
filling_const_8v;
|
|
|
|
}
|
|
|
|
}
|
2011-06-27 17:50:09 +02:00
|
|
|
}
|
|
|
|
else
|
2011-04-09 19:58:24 +02:00
|
|
|
#endif
|
|
|
|
{
|
|
|
|
/* iterate for every two visible line in the frame */
|
|
|
|
for( int y = 0; y < p_pic->p[Y_PLANE].i_visible_lines - 1; y += 2)
|
|
|
|
{
|
|
|
|
const int i_dy_line1_start = y * p_outpic->p[Y_PLANE].i_pitch;
|
|
|
|
const int i_dy_line2_start = ( y + 1 ) * p_outpic->p[Y_PLANE].i_pitch;
|
|
|
|
const int i_du_line_start = (y/2) * p_outpic->p[U_PLANE].i_pitch;
|
|
|
|
const int i_dv_line_start = (y/2) * p_outpic->p[V_PLANE].i_pitch;
|
|
|
|
// to prevent sigsegv if one pic is smaller (theoretically)
|
|
|
|
int i_picture_size_limit = p_pic->p[Y_PLANE].i_visible_pitch
|
|
|
|
< p_outpic->p[Y_PLANE].i_visible_pitch
|
|
|
|
? (p_pic->p[Y_PLANE].i_visible_pitch - 1) :
|
|
|
|
(p_outpic->p[Y_PLANE].i_visible_pitch - 1);
|
|
|
|
/* iterate for every two visible line in the frame */
|
|
|
|
for( int x = 0; x < i_picture_size_limit; x += 2)
|
|
|
|
{
|
|
|
|
// y = y - y/4 {to prevent overflow} + intensity / 4
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line1_start + x + 1] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
p_outpic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] =
|
|
|
|
p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] -
|
|
|
|
(p_pic->p[Y_PLANE].p_pixels[i_dy_line2_start + x + 1] >> 2) +
|
|
|
|
(i_intensity >> 2);
|
|
|
|
// u = 128 {half => B&W} - intensity / 6
|
|
|
|
p_outpic->p[U_PLANE].p_pixels[i_du_line_start + (x / 2)] =
|
|
|
|
filling_const_8u;
|
|
|
|
// v = 128 {half => B&W} + intensity / 14
|
|
|
|
p_outpic->p[V_PLANE].p_pixels[i_dv_line_start + (x / 2)] =
|
|
|
|
filling_const_8v;
|
|
|
|
}
|
2011-03-27 13:02:52 +02:00
|
|
|
}
|
2010-11-15 20:20:14 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* PackedYUVSepia: Applies sepia to one frame of the packed YUV video
|
|
|
|
*****************************************************************************
|
|
|
|
* This function applies sepia effext to one frame of the video by iterating
|
|
|
|
* through video lines. In every pass, we calculate new values for pixels
|
|
|
|
* (UYVY, VYUY, YUYV and YVYU formats are supported)
|
|
|
|
*****************************************************************************/
|
|
|
|
static void PackedYUVSepia( picture_t *p_pic, picture_t *p_outpic,
|
|
|
|
int i_intensity )
|
|
|
|
{
|
2011-03-27 13:02:52 +02:00
|
|
|
uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
|
2010-11-15 20:20:14 +01:00
|
|
|
int i_yindex = 1, i_uindex = 2, i_vindex = 0;
|
|
|
|
|
2010-12-11 18:51:57 +01:00
|
|
|
GetPackedYuvOffsets( p_outpic->format.i_chroma,
|
|
|
|
&i_yindex, &i_uindex, &i_vindex );
|
2010-11-15 20:20:14 +01:00
|
|
|
|
2011-04-09 19:58:23 +02:00
|
|
|
// prepared values to copy for U and V channels
|
|
|
|
const uint8_t filling_const_8u = 128 - i_intensity / 6;
|
|
|
|
const uint8_t filling_const_8v = 128 + i_intensity / 14;
|
|
|
|
|
2010-11-15 20:20:14 +01:00
|
|
|
p_in = p_pic->p[0].p_pixels;
|
|
|
|
p_in_end = p_in + p_pic->p[0].i_visible_lines
|
|
|
|
* p_pic->p[0].i_pitch;
|
|
|
|
p_out = p_outpic->p[0].p_pixels;
|
|
|
|
|
|
|
|
{
|
2011-04-09 19:58:24 +02:00
|
|
|
while( p_in < p_in_end )
|
2010-11-15 20:20:14 +01:00
|
|
|
{
|
2011-04-09 19:58:24 +02:00
|
|
|
p_line_end = p_in + p_pic->p[0].i_visible_pitch;
|
|
|
|
while( p_in < p_line_end )
|
|
|
|
{
|
|
|
|
/* calculate new, sepia values */
|
|
|
|
p_out[i_yindex] =
|
|
|
|
p_in[i_yindex] - (p_in[i_yindex] >> 2) + (i_intensity >> 2);
|
|
|
|
p_out[i_yindex + 2] =
|
|
|
|
p_in[i_yindex + 2] - (p_in[i_yindex + 2] >> 2)
|
|
|
|
+ (i_intensity >> 2);
|
|
|
|
p_out[i_uindex] = filling_const_8u;
|
|
|
|
p_out[i_vindex] = filling_const_8v;
|
|
|
|
p_in += 4;
|
|
|
|
p_out += 4;
|
|
|
|
}
|
|
|
|
p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
|
|
|
|
p_out += p_outpic->p[0].i_pitch
|
|
|
|
- p_outpic->p[0].i_visible_pitch;
|
2010-11-15 20:20:14 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
* RVSepia: Applies sepia to one frame of the RV24/RV32 video
|
|
|
|
*****************************************************************************
|
|
|
|
* This function applies sepia effect to one frame of the video by iterating
|
|
|
|
* through video lines and calculating new values for every byte in chunks of
|
|
|
|
* 3 (RV24) or 4 (RV32) bytes.
|
|
|
|
*****************************************************************************/
|
|
|
|
static void RVSepia( picture_t *p_pic, picture_t *p_outpic, int i_intensity )
|
|
|
|
{
|
2011-04-09 19:58:23 +02:00
|
|
|
#define SCALEBITS 10
|
|
|
|
#define ONE_HALF (1 << (SCALEBITS - 1))
|
|
|
|
#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
|
2011-03-27 13:02:52 +02:00
|
|
|
uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
|
2010-11-15 20:20:14 +01:00
|
|
|
bool b_isRV32 = p_pic->format.i_chroma == VLC_CODEC_RGB32;
|
|
|
|
int i_rindex = 0, i_gindex = 1, i_bindex = 2;
|
|
|
|
|
2010-12-11 18:51:57 +01:00
|
|
|
GetPackedRgbIndexes( &p_outpic->format, &i_rindex, &i_gindex, &i_bindex );
|
2010-11-15 20:20:14 +01:00
|
|
|
|
|
|
|
p_in = p_pic->p[0].p_pixels;
|
|
|
|
p_in_end = p_in + p_pic->p[0].i_visible_lines
|
|
|
|
* p_pic->p[0].i_pitch;
|
|
|
|
p_out = p_outpic->p[0].p_pixels;
|
|
|
|
|
2011-04-09 19:58:23 +02:00
|
|
|
/* Precompute values constant for this certain i_intensity, using the same
|
|
|
|
* formula as YUV functions above */
|
|
|
|
uint8_t r_intensity = (( FIX( 1.40200 * 255.0 / 224.0 ) * (i_intensity * 14)
|
|
|
|
+ ONE_HALF )) >> SCALEBITS;
|
|
|
|
uint8_t g_intensity = (( - FIX(0.34414*255.0/224.0) * ( - i_intensity / 6 )
|
|
|
|
- FIX( 0.71414 * 255.0 / 224.0) * ( i_intensity * 14 )
|
|
|
|
+ ONE_HALF )) >> SCALEBITS;
|
|
|
|
uint8_t b_intensity = (( FIX( 1.77200 * 255.0 / 224.0) * ( - i_intensity / 6 )
|
|
|
|
+ ONE_HALF )) >> SCALEBITS;
|
|
|
|
|
|
|
|
while (p_in < p_in_end)
|
2010-11-15 20:20:14 +01:00
|
|
|
{
|
|
|
|
p_line_end = p_in + p_pic->p[0].i_visible_pitch;
|
2011-04-09 19:58:23 +02:00
|
|
|
while (p_in < p_line_end)
|
2010-11-15 20:20:14 +01:00
|
|
|
{
|
2011-04-09 19:58:23 +02:00
|
|
|
/* do sepia: this calculation is based on the formula to calculate
|
|
|
|
* YUV->RGB and RGB->YUV (in filter_picture.h) mode and that
|
|
|
|
* y = y - y/4 + intensity/4 . As Y is the only channel that changes
|
|
|
|
* through the whole image. After that, precomputed values are added
|
|
|
|
* for each RGB channel and saved in the output image.
|
|
|
|
* FIXME: needs cleanup */
|
|
|
|
uint8_t i_y = ((( 66 * p_in[i_rindex] + 129 * p_in[i_gindex] + 25
|
|
|
|
* p_in[i_bindex] + 128 ) >> 8 ) * FIX(255.0/219.0))
|
|
|
|
- (((( 66 * p_in[i_rindex] + 129 * p_in[i_gindex] + 25
|
|
|
|
* p_in[i_bindex] + 128 ) >> 8 )
|
|
|
|
* FIX( 255.0 / 219.0 )) >> 2 ) + ( i_intensity >> 2 );
|
|
|
|
p_out[i_rindex] = vlc_uint8(i_y + r_intensity);
|
|
|
|
p_out[i_gindex] = vlc_uint8(i_y + g_intensity);
|
|
|
|
p_out[i_bindex] = vlc_uint8(i_y + b_intensity);
|
2010-11-15 20:20:14 +01:00
|
|
|
p_in += 3;
|
|
|
|
p_out += 3;
|
|
|
|
/* for rv32 we take 4 chunks at the time */
|
2011-04-09 19:58:23 +02:00
|
|
|
if (b_isRV32) {
|
|
|
|
/* alpha channel stays the same */
|
|
|
|
*p_out++ = *p_in++;
|
2010-11-15 20:20:14 +01:00
|
|
|
}
|
|
|
|
}
|
2011-04-09 19:58:23 +02:00
|
|
|
|
2010-11-15 20:20:14 +01:00
|
|
|
p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
|
|
|
|
p_out += p_outpic->p[0].i_pitch
|
|
|
|
- p_outpic->p[0].i_visible_pitch;
|
|
|
|
}
|
2011-04-09 19:58:23 +02:00
|
|
|
#undef SCALEBITS
|
|
|
|
#undef ONE_HALF
|
|
|
|
#undef FIX
|
2010-11-15 20:20:14 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
static int FilterCallback ( vlc_object_t *p_this, char const *psz_var,
|
|
|
|
vlc_value_t oldval, vlc_value_t newval,
|
|
|
|
void *p_data )
|
|
|
|
{
|
|
|
|
VLC_UNUSED(psz_var); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
|
|
|
|
filter_t *p_filter = (filter_t*)p_this;
|
|
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
|
|
|
|
|
|
vlc_spin_lock( &p_sys->lock );
|
|
|
|
p_sys->i_intensity = newval.i_int;
|
|
|
|
vlc_spin_unlock( &p_sys->lock );
|
|
|
|
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
}
|