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vlc/modules/video_filter/panoramix.c
Can Wu b009862bea introduce VLC_CLIP() macro to replace use pair of __MAX() and __MIN() 
Signed-off-by: Rafaël Carré <funman@videolan.org>
2011-11-16 15:14:00 -05:00

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/*****************************************************************************
* panoramix.c : Wall panoramic video with edge blending plugin for vlc
*****************************************************************************
* Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
* $Id$
*
* Authors: Cedric Cocquebert <cedric.cocquebert@supelec.fr>
* based on Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <math.h>
#include <assert.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_video_splitter.h>
/* FIXME it is needed for VOUT_ALIGN_* only */
#include <vlc_vout.h>
#define OVERLAP
#ifdef OVERLAP
/* OS CODE DEPENDENT to get display dimensions */
# ifdef WIN32
# include <windows.h>
# else
# include <xcb/xcb.h>
# include <xcb/randr.h>
# endif
#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define COLS_TEXT N_("Number of columns")
#define COLS_LONGTEXT N_("Select the number of horizontal video windows in " \
"which to split the video")
#define ROWS_TEXT N_("Number of rows")
#define ROWS_LONGTEXT N_("Select the number of vertical video windows in " \
"which to split the video")
#define ACTIVE_TEXT N_("Active windows")
#define ACTIVE_LONGTEXT N_("Comma separated list of active windows, " \
"defaults to all")
#define CFG_PREFIX "panoramix-"
#define PANORAMIX_HELP N_("Split the video in multiple windows to " \
"display on a wall of screens")
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin()
set_description( N_("Panoramix: wall with overlap video filter") )
set_shortname( N_("Panoramix" ))
set_help(PANORAMIX_HELP)
set_capability( "video splitter", 0 )
set_category( CAT_VIDEO )
set_subcategory( SUBCAT_VIDEO_VFILTER )
add_integer( CFG_PREFIX "cols", -1, COLS_TEXT, COLS_LONGTEXT, true )
add_integer( CFG_PREFIX "rows", -1, ROWS_TEXT, ROWS_LONGTEXT, true )
#ifdef OVERLAP
#define LENGTH_TEXT N_("length of the overlapping area (in %)")
#define LENGTH_LONGTEXT N_("Select in percent the length of the blended zone")
add_integer_with_range( CFG_PREFIX "bz-length", 100, 0, 100, LENGTH_TEXT, LENGTH_LONGTEXT, true )
#define HEIGHT_TEXT N_("height of the overlapping area (in %)")
#define HEIGHT_LONGTEXT N_("Select in percent the height of the blended zone (case of 2x2 wall)")
add_integer_with_range( CFG_PREFIX "bz-height", 100, 0, 100, HEIGHT_TEXT, HEIGHT_LONGTEXT, true )
#define ATTENUATION_TEXT N_("Attenuation")
#define ATTENUATION_LONGTEXT N_("Check this option if you want attenuate blended zone by this plug-in (if option is unchecked, attenuate is made by opengl)")
add_bool( CFG_PREFIX "attenuate", true, ATTENUATION_TEXT, ATTENUATION_LONGTEXT, false )
#define BEGIN_TEXT N_("Attenuation, begin (in %)")
#define BEGIN_LONGTEXT N_("Select in percent the Lagrange coefficient of the beginning blended zone")
add_integer_with_range( CFG_PREFIX "bz-begin", 0, 0, 100, BEGIN_TEXT, BEGIN_LONGTEXT, true )
#define MIDDLE_TEXT N_("Attenuation, middle (in %)")
#define MIDDLE_LONGTEXT N_("Select in percent the Lagrange coefficient of the middle of blended zone")
add_integer_with_range( CFG_PREFIX "bz-middle", 50, 0, 100, MIDDLE_TEXT, MIDDLE_LONGTEXT, false )
#define END_TEXT N_("Attenuation, end (in %)")
#define END_LONGTEXT N_("Select in percent the Lagrange coefficient of the end of blended zone")
add_integer_with_range( CFG_PREFIX "bz-end", 100, 0, 100, END_TEXT, END_LONGTEXT, true )
#define MIDDLE_POS_TEXT N_("middle position (in %)")
#define MIDDLE_POS_LONGTEXT N_("Select in percent (50 is center) the position of the middle point (Lagrange) of blended zone")
add_integer_with_range( CFG_PREFIX "bz-middle-pos", 50, 1, 99, MIDDLE_POS_TEXT, MIDDLE_POS_LONGTEXT, false )
#define RGAMMA_TEXT N_("Gamma (Red) correction")
#define RGAMMA_LONGTEXT N_("Select the gamma for the correction of blended zone (Red or Y component)")
add_float_with_range( CFG_PREFIX "bz-gamma-red", 1, 0, 5, RGAMMA_TEXT, RGAMMA_LONGTEXT, true )
#define GGAMMA_TEXT N_("Gamma (Green) correction")
#define GGAMMA_LONGTEXT N_("Select the gamma for the correction of blended zone (Green or U component)")
add_float_with_range( CFG_PREFIX "bz-gamma-green", 1, 0, 5, GGAMMA_TEXT, GGAMMA_LONGTEXT, true )
#define BGAMMA_TEXT N_("Gamma (Blue) correction")
#define BGAMMA_LONGTEXT N_("Select the gamma for the correction of blended zone (Blue or V component)")
add_float_with_range( CFG_PREFIX "bz-gamma-blue", 1, 0, 5, BGAMMA_TEXT, BGAMMA_LONGTEXT, true )
#define RGAMMA_BC_TEXT N_("Black Crush for Red")
#define RGAMMA_BC_LONGTEXT N_("Select the Black Crush of blended zone (Red or Y component)")
#define GGAMMA_BC_TEXT N_("Black Crush for Green")
#define GGAMMA_BC_LONGTEXT N_("Select the Black Crush of blended zone (Green or U component)")
#define BGAMMA_BC_TEXT N_("Black Crush for Blue")
#define BGAMMA_BC_LONGTEXT N_("Select the Black Crush of blended zone (Blue or V component)")
#define RGAMMA_WC_TEXT N_("White Crush for Red")
#define RGAMMA_WC_LONGTEXT N_("Select the White Crush of blended zone (Red or Y component)")
#define GGAMMA_WC_TEXT N_("White Crush for Green")
#define GGAMMA_WC_LONGTEXT N_("Select the White Crush of blended zone (Green or U component)")
#define BGAMMA_WC_TEXT N_("White Crush for Blue")
#define BGAMMA_WC_LONGTEXT N_("Select the White Crush of blended zone (Blue or V component)")
#define RGAMMA_BL_TEXT N_("Black Level for Red")
#define RGAMMA_BL_LONGTEXT N_("Select the Black Level of blended zone (Red or Y component)")
#define GGAMMA_BL_TEXT N_("Black Level for Green")
#define GGAMMA_BL_LONGTEXT N_("Select the Black Level of blended zone (Green or U component)")
#define BGAMMA_BL_TEXT N_("Black Level for Blue")
#define BGAMMA_BL_LONGTEXT N_("Select the Black Level of blended zone (Blue or V component)")
#define RGAMMA_WL_TEXT N_("White Level for Red")
#define RGAMMA_WL_LONGTEXT N_("Select the White Level of blended zone (Red or Y component)")
#define GGAMMA_WL_TEXT N_("White Level for Green")
#define GGAMMA_WL_LONGTEXT N_("Select the White Level of blended zone (Green or U component)")
#define BGAMMA_WL_TEXT N_("White Level for Blue")
#define BGAMMA_WL_LONGTEXT N_("Select the White Level of blended zone (Blue or V component)")
add_integer_with_range( CFG_PREFIX "bz-blackcrush-red", 140, 0, 255, RGAMMA_BC_TEXT, RGAMMA_BC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-blackcrush-green", 140, 0, 255, GGAMMA_BC_TEXT, GGAMMA_BC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-blackcrush-blue", 140, 0, 255, BGAMMA_BC_TEXT, BGAMMA_BC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitecrush-red", 200, 0, 255, RGAMMA_WC_TEXT, RGAMMA_WC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitecrush-green", 200, 0, 255, GGAMMA_WC_TEXT, GGAMMA_WC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitecrush-blue", 200, 0, 255, BGAMMA_WC_TEXT, BGAMMA_WC_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-blacklevel-red", 150, 0, 255, RGAMMA_BL_TEXT, RGAMMA_BL_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-blacklevel-green", 150, 0, 255, GGAMMA_BL_TEXT, GGAMMA_BL_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-blacklevel-blue", 150, 0, 255, BGAMMA_BL_TEXT, BGAMMA_BL_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitelevel-red", 0, 0, 255, RGAMMA_WL_TEXT, RGAMMA_WL_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitelevel-green", 0, 0, 255, GGAMMA_WL_TEXT, GGAMMA_WL_LONGTEXT, true )
add_integer_with_range( CFG_PREFIX "bz-whitelevel-blue", 0, 0, 255, BGAMMA_WL_TEXT, BGAMMA_WL_LONGTEXT, true )
#ifndef WIN32
add_obsolete_bool( CFG_PREFIX "xinerama" );
#endif
add_obsolete_bool( CFG_PREFIX "offset-x" )
#endif
add_string( CFG_PREFIX "active", NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT, true )
add_shortcut( "panoramix" )
set_callbacks( Open, Close )
vlc_module_end()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static const char *const ppsz_filter_options[] = {
"cols", "rows", "bz-length", "bz-height", "attenuate",
"bz-begin", "bz-middle", "bz-end", "bz-middle-pos", "bz-gamma-red",
"bz-gamma-green", "bz-gamma-blue", "bz-blackcrush-red",
"bz-blackcrush-green", "bz-blackcrush-blue", "bz-whitecrush-red",
"bz-whitecrush-green", "bz-whitecrush-blue", "bz-blacklevel-red",
"bz-blacklevel-green", "bz-blacklevel-blue", "bz-whitelevel-red",
"bz-whitelevel-green", "bz-whitelevel-blue", "active",
NULL
};
#define ROW_MAX (15)
#define COL_MAX (15)
#define ACCURACY 1000
/* */
static inline int clip_accuracy( int a )
{
return (a > ACCURACY) ? ACCURACY : (a < 0) ? 0 : a;
}
static inline float clip_unit( float f )
{
return f < 0.0 ? 0.0 : ( f > 1.0 ? 1.0 : f );
}
/* */
typedef struct
{
float f_black_crush;
float f_black_level;
float f_white_crush;
float f_white_level;
float f_gamma;
} panoramix_gamma_t;
typedef struct
{
struct
{
int i_left;
int i_right;
int i_top;
int i_bottom;
} black;
struct
{
int i_left;
int i_right;
int i_top;
int i_bottom;
} attenuate;
} panoramix_filter_t;
typedef struct
{
bool b_active;
int i_output;
/* Output position and size */
int i_x;
int i_y;
int i_width;
int i_height;
int i_align;
/* Source position and size */
int i_src_x;
int i_src_y;
int i_src_width;
int i_src_height;
/* Filter configuration to use to create the output */
panoramix_filter_t filter;
} panoramix_output_t;
typedef struct
{
vlc_fourcc_t i_chroma;
const int pi_div_w[VOUT_MAX_PLANES];
const int pi_div_h[VOUT_MAX_PLANES];
const int pi_black[VOUT_MAX_PLANES];
bool b_planar;
} panoramix_chroma_t;
struct video_splitter_sys_t
{
const panoramix_chroma_t *p_chroma;
/* */
bool b_attenuate;
unsigned int bz_length, bz_height;
unsigned int bz_begin, bz_middle, bz_end;
unsigned int bz_middle_pos;
unsigned int a_0, a_1, a_2;
int lambdav[VOUT_MAX_PLANES][2][ACCURACY/2]; /* [plane][position][?] */
int lambdah[VOUT_MAX_PLANES][2][ACCURACY/2];
unsigned int i_overlap_w2; /* Half overlap width */
unsigned int i_overlap_h2; /* Half overlap height */
uint8_t p_lut[VOUT_MAX_PLANES][ACCURACY + 1][256];
/* */
int i_col;
int i_row;
panoramix_output_t pp_output[COL_MAX][ROW_MAX]; /* [x][y] */
};
/* */
static int Filter( video_splitter_t *, picture_t *pp_dst[], picture_t * );
static int Mouse( video_splitter_t *, vlc_mouse_t *,
int i_index,
const vlc_mouse_t *p_old, const vlc_mouse_t *p_new );
/* */
static int Configuration( panoramix_output_t pp_output[ROW_MAX][COL_MAX],
int i_col, int i_row,
int i_src_width, int i_src_height,
int i_half_w, int i_half_h,
bool b_attenuate,
const bool *pb_active );
static double GammaFactor( const panoramix_gamma_t *, float f_value );
static void FilterPlanar( uint8_t *p_out, int i_out_pitch,
const uint8_t *p_in, int i_in_pitch,
int i_copy_pitch,
int i_copy_lines,
int i_pixel_black,
const panoramix_filter_t *,
uint8_t p_lut[ACCURACY + 1][256],
int lambdav[2][ACCURACY/2],
int lambdah[2][ACCURACY/2] );
/* */
static const panoramix_chroma_t p_chroma_array[] = {
/* Planar chroma */
{ VLC_CODEC_I410, { 1, 4, 4, }, { 1, 1, 1, }, { 0, 128, 128 }, true },
{ VLC_CODEC_I411, { 1, 4, 4, }, { 1, 4, 4, }, { 0, 128, 128 }, true },
{ VLC_CODEC_YV12, { 1, 2, 2, }, { 1, 2, 2, }, { 0, 128, 128 }, true },
{ VLC_CODEC_I420, { 1, 2, 2, }, { 1, 2, 2, }, { 0, 128, 128 }, true },
{ VLC_CODEC_J420, { 1, 2, 2, }, { 1, 2, 2, }, { 0, 128, 128 }, true },
{ VLC_CODEC_I422, { 1, 2, 2, }, { 1, 1, 1, }, { 0, 128, 128 }, true },
{ VLC_CODEC_J422, { 1, 2, 2, }, { 1, 1, 1, }, { 0, 128, 128 }, true },
{ VLC_CODEC_I440, { 1, 1, 1, }, { 1, 2, 2, }, { 0, 128, 128 }, true },
{ VLC_CODEC_J440, { 1, 1, 1, }, { 1, 2, 2, }, { 0, 128, 128 }, true },
{ VLC_CODEC_I444, { 1, 1, 1, }, { 1, 1, 1, }, { 0, 128, 128 }, true },
/* TODO packed chroma (yuv/rgb) ? */
{ 0, {0, }, { 0, }, { 0, 0, 0 }, false }
};
#ifndef WIN32
/* Get the number of outputs */
static unsigned CountMonitors( vlc_object_t *obj )
{
char *psz_display = var_InheritString( obj, "x11-display" );
int snum;
xcb_connection_t *conn = xcb_connect( psz_display, &snum );
free( psz_display );
if( xcb_connection_has_error( conn ) )
return 0;
const xcb_setup_t *setup = xcb_get_setup( conn );
xcb_screen_t *scr = NULL;
for( xcb_screen_iterator_t i = xcb_setup_roots_iterator( setup );
i.rem > 0; xcb_screen_next( &i ) )
{
if( snum == 0 )
{
scr = i.data;
break;
}
snum--;
}
unsigned n = 0;
if( scr == NULL )
goto error;
xcb_randr_query_version_reply_t *v =
xcb_randr_query_version_reply( conn,
xcb_randr_query_version( conn, 1, 2 ), NULL );
if( v == NULL )
goto error;
msg_Dbg( obj, "using X RandR extension v%"PRIu32".%"PRIu32,
v->major_version, v->minor_version );
free( v );
xcb_randr_get_screen_resources_reply_t *r =
xcb_randr_get_screen_resources_reply( conn,
xcb_randr_get_screen_resources( conn, scr->root ), NULL );
if( r == NULL )
goto error;
const xcb_randr_output_t *outputs =
xcb_randr_get_screen_resources_outputs( r );
for( unsigned i = 0; i < r->num_outputs; i++ )
{
xcb_randr_get_output_info_reply_t *output =
xcb_randr_get_output_info_reply( conn,
xcb_randr_get_output_info( conn, outputs[i], 0 ), NULL );
if( output == NULL )
continue;
/* FIXME: do not count cloned outputs multiple times */
/* XXX: what to do with UNKNOWN state connections? */
n += output->connection == XCB_RANDR_CONNECTION_CONNECTED;
free( output );
}
free( r );
msg_Dbg( obj, "X randr has %u outputs", n );
error:
xcb_disconnect( conn );
return n;
}
#endif
/*****************************************************************************
* Open: allocates Wall video thread output method
*****************************************************************************
* This function allocates and initializes a Wall vout method.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
video_splitter_t *p_splitter = (video_splitter_t*)p_this;
video_splitter_sys_t *p_sys;
const panoramix_chroma_t *p_chroma;
for( int i = 0; ; i++ )
{
vlc_fourcc_t i_chroma = p_chroma_array[i].i_chroma;
if( !i_chroma )
{
msg_Err( p_splitter, "colorspace not supported by plug-in !" );
return VLC_EGENERIC;
}
if( i_chroma == p_splitter->fmt.i_chroma )
{
p_chroma = &p_chroma_array[i];
break;
}
}
/* Allocate structure */
p_splitter->p_sys = p_sys = malloc( sizeof( *p_sys ) );
if( !p_sys )
return VLC_ENOMEM;
/* */
p_sys->p_chroma = p_chroma;
/* */
config_ChainParse( p_splitter, CFG_PREFIX, ppsz_filter_options,
p_splitter->p_cfg );
/* */
p_sys->i_col = var_InheritInteger( p_splitter, CFG_PREFIX "cols" );
p_sys->i_row = var_InheritInteger( p_splitter, CFG_PREFIX "rows" );
/* Autodetect number of displays */
if( p_sys->i_col < 0 || p_sys->i_row < 0 )
{
#ifdef WIN32
const int i_monitor_count = GetSystemMetrics(SM_CMONITORS);
if( i_monitor_count > 1 )
{
p_sys->i_col = GetSystemMetrics( SM_CXVIRTUALSCREEN ) / GetSystemMetrics( SM_CXSCREEN );
p_sys->i_row = GetSystemMetrics( SM_CYVIRTUALSCREEN ) / GetSystemMetrics( SM_CYSCREEN );
if( p_sys->i_col * p_sys->i_row != i_monitor_count )
{
p_sys->i_col = i_monitor_count;
p_sys->i_row = 1;
}
}
#else
const unsigned i_monitors = CountMonitors( p_this );
if( i_monitors > 1 ) /* Find closest to square */
for( unsigned w = 1; (i_monitors / w) >= w ; w++ )
{
if( i_monitors % w )
continue;
p_sys->i_row = w;
p_sys->i_col = i_monitors / w;
}
#endif
/* By default do 2x1 */
if( p_sys->i_row < 0 )
p_sys->i_row = 1;
if( p_sys->i_col < 0 )
p_sys->i_col = 2;
var_SetInteger( p_splitter, CFG_PREFIX "cols", p_sys->i_col);
var_SetInteger( p_splitter, CFG_PREFIX "rows", p_sys->i_row);
}
/* */
p_sys->b_attenuate = var_InheritBool( p_splitter, CFG_PREFIX "attenuate");
p_sys->bz_length = var_InheritInteger( p_splitter, CFG_PREFIX "bz-length" );
p_sys->bz_height = var_InheritInteger( p_splitter, CFG_PREFIX "bz-height" );
p_sys->bz_begin = var_InheritInteger( p_splitter, CFG_PREFIX "bz-begin" );
p_sys->bz_middle = var_InheritInteger( p_splitter, CFG_PREFIX "bz-middle" );
p_sys->bz_end = var_InheritInteger( p_splitter, CFG_PREFIX "bz-end" );
p_sys->bz_middle_pos = var_InheritInteger( p_splitter, CFG_PREFIX "bz-middle-pos" );
double d_p = 100.0 / p_sys->bz_middle_pos;
p_sys->a_2 = d_p * p_sys->bz_begin - (double)(d_p * d_p / (d_p - 1)) * p_sys->bz_middle + (double)(d_p / (d_p - 1)) * p_sys->bz_end;
p_sys->a_1 = -(d_p + 1) * p_sys->bz_begin + (double)(d_p * d_p / (d_p - 1)) * p_sys->bz_middle - (double)(1 / (d_p - 1)) * p_sys->bz_end;
p_sys->a_0 = p_sys->bz_begin;
/* */
p_sys->i_col = VLC_CLIP( COL_MAX, 1, p_sys->i_col );
p_sys->i_row = VLC_CLIP( ROW_MAX, 1, p_sys->i_row );
msg_Dbg( p_splitter, "opening a %i x %i wall",
p_sys->i_col, p_sys->i_row );
if( p_sys->bz_length > 0 && ( p_sys->i_row > 1 || p_sys->i_col > 1 ) )
{
const int i_overlap_w2_max = p_splitter->fmt.i_width / p_sys->i_col / 2;
const int i_overlap_h2_max = p_splitter->fmt.i_height / p_sys->i_row / 2;
const int i_overlap2_max = __MIN( i_overlap_w2_max, i_overlap_h2_max );
if( p_sys->i_col > 1 )
p_sys->i_overlap_w2 = i_overlap2_max * p_sys->bz_length / 100;
else
p_sys->i_overlap_w2 = 0;
if( p_sys->i_row > 1 )
p_sys->i_overlap_h2 = i_overlap2_max * p_sys->bz_height / 100;
else
p_sys->i_overlap_h2 = 0;
/* */
int i_div_max_w = 1;
int i_div_max_h = 1;
for( int i = 0; i < VOUT_MAX_PLANES; i++ )
{
i_div_max_w = __MAX( i_div_max_w, p_chroma->pi_div_w[i] );
i_div_max_h = __MAX( i_div_max_h, p_chroma->pi_div_h[i] );
}
p_sys->i_overlap_w2 = i_div_max_w * (p_sys->i_overlap_w2 / i_div_max_w);
p_sys->i_overlap_h2 = i_div_max_h * (p_sys->i_overlap_h2 / i_div_max_h);
}
else
{
p_sys->i_overlap_w2 = 0;
p_sys->i_overlap_h2 = 0;
}
/* Compute attenuate parameters */
if( p_sys->b_attenuate )
{
panoramix_gamma_t p_gamma[VOUT_MAX_PLANES];
p_gamma[0].f_gamma = var_InheritFloat( p_splitter, CFG_PREFIX "bz-gamma-red" );
p_gamma[1].f_gamma = var_InheritFloat( p_splitter, CFG_PREFIX "bz-gamma-green" );
p_gamma[2].f_gamma = var_InheritFloat( p_splitter, CFG_PREFIX "bz-gamma-blue" );
p_gamma[0].f_black_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blackcrush-red" ) / 255.0;
p_gamma[1].f_black_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blackcrush-green" ) / 255.0;
p_gamma[2].f_black_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blackcrush-blue" ) / 255.0;
p_gamma[0].f_white_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitecrush-red" ) / 255.0;
p_gamma[1].f_white_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitecrush-green" ) / 255.0;
p_gamma[2].f_white_crush = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitecrush-blue" ) / 255.0;
p_gamma[0].f_black_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blacklevel-red" ) / 255.0;
p_gamma[1].f_black_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blacklevel-green" ) / 255.0;
p_gamma[2].f_black_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-blacklevel-blue" ) / 255.0;
p_gamma[0].f_white_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitelevel-red" ) / 255.0;
p_gamma[1].f_white_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitelevel-green" ) / 255.0;
p_gamma[2].f_white_level = var_InheritInteger( p_splitter, CFG_PREFIX "bz-whitelevel-blue" ) / 255.0;
for( int i = 3; i < VOUT_MAX_PLANES; i++ )
{
/* Initialize unsupported planes */
p_gamma[i].f_gamma = 1.0;
p_gamma[i].f_black_crush = 140.0/255.0;
p_gamma[i].f_white_crush = 200.0/255.0;
p_gamma[i].f_black_level = 150.0/255.0;
p_gamma[i].f_white_level = 0.0/255.0;
}
if( p_chroma->i_chroma == VLC_CODEC_YV12 )
{
/* Exchange U and V */
panoramix_gamma_t t = p_gamma[1];
p_gamma[1] = p_gamma[2];
p_gamma[2] = t;
}
for( int i_index = 0; i_index < 256; i_index++ )
{
for( int i_index2 = 0; i_index2 <= ACCURACY; i_index2++ )
{
for( int i_plane = 0; i_plane < VOUT_MAX_PLANES; i_plane++ )
{
double f_factor = GammaFactor( &p_gamma[i_plane], (float)i_index / 255.0 );
float f_lut = clip_unit( 1.0 - ((ACCURACY - (float)i_index2) * f_factor / (ACCURACY - 1)) );
p_sys->p_lut[i_plane][i_index2][i_index] = f_lut * i_index + (int)( (1.0 - f_lut) * (float)p_chroma->pi_black[i_plane] );
}
}
}
for( int i_plane = 0; i_plane < VOUT_MAX_PLANES; i_plane++ )
{
if( !p_chroma->pi_div_w[i_plane] || !p_chroma->pi_div_h[i_plane] )
continue;
const int i_length_w = (2 * p_sys->i_overlap_w2) / p_chroma->pi_div_w[i_plane];
const int i_length_h = (2 * p_sys->i_overlap_h2) / p_chroma->pi_div_h[i_plane];
for( int i_dir = 0; i_dir < 2; i_dir++ )
{
const int i_length = i_dir == 0 ? i_length_w : i_length_h;
const int i_den = i_length * i_length;
const int a_2 = p_sys->a_2 * (ACCURACY / 100);
const int a_1 = p_sys->a_1 * i_length * (ACCURACY / 100);
const int a_0 = p_sys->a_0 * i_den * (ACCURACY / 100);
for( int i_position = 0; i_position < 2; i_position++ )
{
for( int i_index = 0; i_index < i_length; i_index++ )
{
const int v = i_position == 1 ? i_index : (i_length - i_index);
const int i_lambda = clip_accuracy( ACCURACY - (a_2 * v*v + a_1 * v + a_0) / i_den );
if( i_dir == 0 )
p_sys->lambdav[i_plane][i_position][i_index] = i_lambda;
else
p_sys->lambdah[i_plane][i_position][i_index] = i_lambda;
}
}
}
}
}
/* */
char *psz_state = var_InheritString( p_splitter, CFG_PREFIX "active" );
/* */
bool pb_active[COL_MAX*ROW_MAX];
for( int i = 0; i < COL_MAX*ROW_MAX; i++ )
pb_active[i] = psz_state == NULL;
/* Parse active list if provided */
char *psz_tmp = psz_state;
while( psz_tmp && *psz_tmp )
{
char *psz_next = strchr( psz_tmp, ',' );
if( psz_next )
*psz_next++ = '\0';
const int i_index = atoi( psz_tmp );
if( i_index >= 0 && i_index < COL_MAX*ROW_MAX )
pb_active[i_index] = true;
psz_tmp = psz_next;
}
free( psz_state );
/* */
p_splitter->i_output =
Configuration( p_sys->pp_output,
p_sys->i_col, p_sys->i_row,
p_splitter->fmt.i_width, p_splitter->fmt.i_height,
p_sys->i_overlap_w2, p_sys->i_overlap_h2,
p_sys->b_attenuate,
pb_active );
p_splitter->p_output = calloc( p_splitter->i_output,
sizeof(*p_splitter->p_output) );
if( !p_splitter->p_output )
{
free( p_sys );
return VLC_ENOMEM;
}
for( int y = 0; y < p_sys->i_row; y++ )
{
for( int x = 0; x < p_sys->i_col; x++ )
{
panoramix_output_t *p_output = &p_sys->pp_output[x][y];
if( !p_output->b_active )
continue;
video_splitter_output_t *p_cfg = &p_splitter->p_output[p_output->i_output];
/* */
video_format_Copy( &p_cfg->fmt, &p_splitter->fmt );
p_cfg->fmt.i_visible_width =
p_cfg->fmt.i_width = p_output->i_width;
p_cfg->fmt.i_visible_height =
p_cfg->fmt.i_height = p_output->i_height;
p_cfg->window.i_x = p_output->i_x;
p_cfg->window.i_y = p_output->i_y;
p_cfg->window.i_align = p_output->i_align;
p_cfg->psz_module = NULL;
}
}
/* */
p_splitter->pf_filter = Filter;
p_splitter->pf_mouse = Mouse;
return VLC_SUCCESS;
}
/**
* Terminate a splitter module
*/
static void Close( vlc_object_t *p_this )
{
video_splitter_t *p_splitter = (video_splitter_t*)p_this;
video_splitter_sys_t *p_sys = p_splitter->p_sys;
free( p_splitter->p_output );
free( p_sys );
}
/**
* It creates multiples pictures from the source one
*/
static int Filter( video_splitter_t *p_splitter, picture_t *pp_dst[], picture_t *p_src )
{
video_splitter_sys_t *p_sys = p_splitter->p_sys;
if( video_splitter_NewPicture( p_splitter, pp_dst ) )
{
picture_Release( p_src );
return VLC_EGENERIC;
}
for( int y = 0; y < p_sys->i_row; y++ )
{
for( int x = 0; x < p_sys->i_col; x++ )
{
const panoramix_output_t *p_output = &p_sys->pp_output[x][y];
if( !p_output->b_active )
continue;
/* */
picture_t *p_dst = pp_dst[p_output->i_output];
/* */
picture_CopyProperties( p_dst, p_src );
/* */
for( int i_plane = 0; i_plane < p_src->i_planes; i_plane++ )
{
const int i_div_w = p_sys->p_chroma->pi_div_w[i_plane];
const int i_div_h = p_sys->p_chroma->pi_div_h[i_plane];
if( !i_div_w || !i_div_h )
continue;
const plane_t *p_srcp = &p_src->p[i_plane];
const plane_t *p_dstp = &p_dst->p[i_plane];
/* */
panoramix_filter_t filter;
filter.black.i_right = p_output->filter.black.i_right / i_div_w;
filter.black.i_left = p_output->filter.black.i_left / i_div_w;
filter.black.i_top = p_output->filter.black.i_top / i_div_h;
filter.black.i_bottom = p_output->filter.black.i_bottom / i_div_h;
filter.attenuate.i_right = p_output->filter.attenuate.i_right / i_div_w;
filter.attenuate.i_left = p_output->filter.attenuate.i_left / i_div_w;
filter.attenuate.i_top = p_output->filter.attenuate.i_top / i_div_h;
filter.attenuate.i_bottom = p_output->filter.attenuate.i_bottom / i_div_h;
/* */
const int i_x = p_output->i_src_x/i_div_w;
const int i_y = p_output->i_src_y/i_div_h;
assert( p_sys->p_chroma->b_planar );
FilterPlanar( p_dstp->p_pixels, p_dstp->i_pitch,
&p_srcp->p_pixels[i_y * p_srcp->i_pitch + i_x * p_srcp->i_pixel_pitch], p_srcp->i_pitch,
p_output->i_src_width/i_div_w, p_output->i_src_height/i_div_h,
p_sys->p_chroma->pi_black[i_plane],
&filter,
p_sys->p_lut[i_plane],
p_sys->lambdav[i_plane],
p_sys->lambdah[i_plane] );
}
}
}
picture_Release( p_src );
return VLC_SUCCESS;
}
/**
* It converts mouse events
*/
static int Mouse( video_splitter_t *p_splitter, vlc_mouse_t *p_mouse,
int i_index,
const vlc_mouse_t *p_old, const vlc_mouse_t *p_new )
{
video_splitter_sys_t *p_sys = p_splitter->p_sys;
VLC_UNUSED(p_old);
for( int y = 0; y < p_sys->i_row; y++ )
{
for( int x = 0; x < p_sys->i_col; x++ )
{
const panoramix_output_t *p_output = p_output = &p_sys->pp_output[x][y];
if( p_output->b_active && p_output->i_output == i_index )
{
const int i_x = p_new->i_x - p_output->filter.black.i_left;
const int i_y = p_new->i_y - p_output->filter.black.i_top;
if( i_x >= 0 && i_x < p_output->i_width - p_output->filter.black.i_right &&
i_y >= 0 && i_y < p_output->i_height - p_output->filter.black.i_bottom )
{
*p_mouse = *p_new;
p_mouse->i_x = p_output->i_src_x + i_x;
p_mouse->i_y = p_output->i_src_y + i_y;
return VLC_SUCCESS;
}
}
}
}
return VLC_EGENERIC;
}
/* It return a coefficient between 0.0 and 1.0 to be applied to the given
* value
*/
static double GammaFactor( const panoramix_gamma_t *g, float f_value )
{
if( f_value <= g->f_black_crush )
{
float f_input = f_value * g->f_black_level / g->f_black_crush + (1.0 - g->f_black_level);
return pow( f_input, 1.0 / g->f_gamma );
}
else if( f_value >= g->f_white_crush )
{
float f_input = (f_value * (1.0 - (g->f_white_level + 1.0)) + (g->f_white_level + 1.0) * g->f_white_crush - 1.0) / (g->f_white_crush - 1.0);
return pow( f_input, 1.0 / g->f_gamma );
}
return 1.0;
}
/**
* It creates the panoramix configuration
*/
static int Configuration( panoramix_output_t pp_output[ROW_MAX][COL_MAX],
int i_col, int i_row,
int i_src_width, int i_src_height,
int i_half_w, int i_half_h,
bool b_attenuate,
const bool *pb_active )
{
#ifdef OVERLAP
const bool b_overlap = true;
#else
const bool b_overlap = false;
#endif
/* */
int i_output = 0;
for( int y = 0, i_src_y = 0, i_dst_y = 0; y < i_row; y++ )
{
const bool b_row_first = y == 0;
const bool b_row_last = y == i_row - 1;
/* Compute source height */
int i_win_height = (i_src_height / i_row ) & ~1;
if( b_row_last )
i_win_height = i_src_height - y * i_win_height;
for( int x = 0, i_src_x = 0, i_dst_x = 0; x < i_col; x++ )
{
const bool b_col_first = x == 0;
const bool b_col_last = x == i_col - 1;
/* Compute source width */
int i_win_width = (i_src_width / i_col ) & ~1;
if( b_col_last )
i_win_width = i_src_width - x * i_win_width;
/* Compute filter configuration */
panoramix_filter_t cfg;
memset( &cfg, 0, sizeof(cfg) );
if( b_overlap && b_attenuate )
{
if( i_col > 2 )
{
if( b_col_first )
cfg.black.i_left = i_half_w;
if( b_col_last )
cfg.black.i_right = i_half_w;
}
if( i_row > 2 )
{
if( b_row_first )
cfg.black.i_top = i_half_h;
if( b_row_last )
cfg.black.i_bottom = i_half_h;
}
if( !b_col_first )
cfg.attenuate.i_left = 2 * i_half_w;
if( !b_col_last )
cfg.attenuate.i_right = 2 * i_half_w;
if( !b_row_first )
cfg.attenuate.i_top = 2 * i_half_h;
if( !b_row_last )
cfg.attenuate.i_bottom = 2 * i_half_h;
}
/* Compute alignment */
int i_align = 0;
if( i_col > 1 )
{
if( b_col_first )
i_align |= VOUT_ALIGN_RIGHT;
if( b_col_last )
i_align |= VOUT_ALIGN_LEFT;
}
if( i_row > 1 )
{
if( b_row_first )
i_align |= VOUT_ALIGN_BOTTOM;
if( b_row_last )
i_align |= VOUT_ALIGN_TOP;
}
/* */
panoramix_output_t *p_output = &pp_output[x][y];
/* */
p_output->i_src_x = i_src_x - cfg.attenuate.i_left/2;
p_output->i_src_y = i_src_y - cfg.attenuate.i_top/2;
p_output->i_src_width = i_win_width + cfg.attenuate.i_left/2 + cfg.attenuate.i_right/2;
p_output->i_src_height = i_win_height + cfg.attenuate.i_top/2 + cfg.attenuate.i_bottom/2;
/* */
p_output->filter = cfg;
/* */
p_output->i_align = i_align;
p_output->i_x = i_dst_x;
p_output->i_y = i_dst_y;
p_output->i_width = cfg.black.i_left + p_output->i_src_width + cfg.black.i_right;
p_output->i_height = cfg.black.i_top + p_output->i_src_height + cfg.black.i_bottom;
/* */
p_output->b_active = pb_active[y * i_col + x] &&
p_output->i_width > 0 &&
p_output->i_height > 0;
if( p_output->b_active )
p_output->i_output = i_output++;
/* */
i_src_x += i_win_width;
i_dst_x += p_output->i_width;
}
i_src_y += i_win_height;
i_dst_y += pp_output[0][y].i_height;
}
return i_output;
}
/**
* It filters a video plane
*/
static void FilterPlanar( uint8_t *p_out, int i_out_pitch,
const uint8_t *p_in, int i_in_pitch,
int i_copy_pitch,
int i_copy_lines,
int i_pixel_black,
const panoramix_filter_t *p_cfg,
uint8_t p_lut[ACCURACY + 1][256],
int lambdav[2][ACCURACY/2],
int lambdah[2][ACCURACY/2] )
{
/* */
assert( !p_cfg->black.i_left || !p_cfg->attenuate.i_left );
assert( !p_cfg->black.i_right || !p_cfg->attenuate.i_right );
assert( !p_cfg->black.i_top || !p_cfg->attenuate.i_top );
assert( !p_cfg->black.i_bottom || !p_cfg->attenuate.i_bottom );
const int i_out_width = p_cfg->black.i_left + i_copy_pitch + p_cfg->black.i_right;
/* Top black border */
for( int b = 0; b < p_cfg->black.i_top; b++ )
{
vlc_memset( p_out, i_pixel_black, i_out_width );
p_out += i_out_pitch;
}
for( int y = 0; y < i_copy_lines; y++ )
{
const uint8_t *p_src = p_in;
uint8_t *p_dst = p_out;
/* Black border on the left */
if( p_cfg->black.i_left > 0 )
{
memset( p_dst, i_pixel_black, p_cfg->black.i_left );
p_dst += p_cfg->black.i_left;
}
/* Attenuated video on the left */
for( int i = 0; i < p_cfg->attenuate.i_left; i++ )
*p_dst++ = p_lut[lambdav[0][i]][*p_src++];
/* Unmodified video */
const int i_unmodified_width = i_copy_pitch - p_cfg->attenuate.i_left - p_cfg->attenuate.i_right;
vlc_memcpy( p_dst, p_src, i_unmodified_width );
p_dst += i_unmodified_width;
p_src += i_unmodified_width;
/* Attenuated video on the right */
for( int i = 0; i < p_cfg->attenuate.i_right; i++ )
*p_dst++ = p_lut[lambdav[1][i]][*p_src++];
/* Black border on the right */
if( p_cfg->black.i_right > 0 )
{
memset( p_dst, i_pixel_black, p_cfg->black.i_right );
p_dst += p_cfg->black.i_right;
}
/* Attenuate complete line at top/bottom */
const bool b_attenuate_top = y < p_cfg->attenuate.i_top;
const bool b_attenuate_bottom = y >= i_copy_lines - p_cfg->attenuate.i_bottom;
if( b_attenuate_top || b_attenuate_bottom )
{
const int i_index = b_attenuate_top ? lambdah[0][y] : lambdah[1][y - (i_copy_lines - p_cfg->attenuate.i_bottom)];
uint8_t *p_dst = &p_out[0];
for( int i = 0; i < i_out_width; i++)
p_dst[i] = p_lut[i_index][p_dst[i]];
}
/* */
p_in += i_in_pitch;
p_out += i_out_pitch;
}
/* Bottom black border */
for( int b = 0; b < p_cfg->black.i_bottom; b++ )
{
vlc_memset( p_out, i_pixel_black, i_out_width );
p_out += i_out_pitch;
}
}
#if 0
static void RenderPackedRGB( vout_thread_t *p_vout, picture_t *p_pic )
{
int length;
length = 2 * p_sys->i_overlap_w2 * p_pic->p->i_pixel_pitch;
if (p_sys->b_has_changed)
{
int i_plane_;
int i_col_mod;
Denom = F2(length / p_pic->p->i_pixel_pitch);
a_2 = p_sys->a_2 * (ACCURACY / 100);
a_1 = p_sys->a_1 * 2 * p_sys->i_overlap_w2 * (ACCURACY / 100);
a_0 = p_sys->a_0 * Denom * (ACCURACY / 100);
for(i_col_mod = 0; i_col_mod < 2; i_col_mod++)
for (i_index = 0; i_index < length / p_pic->p->i_pixel_pitch; i_index++)
for (i_plane_ = 0; i_plane_ < p_pic->p->i_pixel_pitch; i_plane_++)
p_sys->lambda[i_col_mod][i_plane_][i_index] = clip_accuracy(!i_col_mod ? ACCURACY - (F4(a_2, a_1, i_index) + a_0) / Denom : ACCURACY - (F4(a_2, a_1,(length / p_pic->p->i_pixel_pitch) - i_index) + a_0) / Denom);
}
length = 2 * p_sys->i_overlap_h2;
if (p_sys->b_has_changed)
{
int i_plane_;
int i_row_mod;
Denom = F2(length);
a_2 = p_sys->a_2 * (ACCURACY / 100);
a_1 = p_sys->a_1 * length * (ACCURACY / 100);
a_0 = p_sys->a_0 * Denom * (ACCURACY / 100);
for(i_row_mod = 0; i_row_mod < 2; i_row_mod++)
for (i_index = 0; i_index < length; i_index++)
for (i_plane_ = 0; i_plane_ < p_pic->p->i_pixel_pitch; i_plane_++)
p_sys->lambda2[i_row_mod][i_plane_][i_index] = clip_accuracy(!i_row_mod ? ACCURACY - (F4(a_2, a_1, i_index) + a_0) / Denom : ACCURACY - (F4(a_2, a_1,(length) - i_index) + a_0) / Denom);
}
}
#endif
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