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veejay/veejay-ng/pluginpack/lvd_pencilsketch.c
Niels Elburg ae5b2ece05 added default pluginpack to veejay's base 
git-svn-id: svn://code.dyne.org/veejay/trunk@606 eb8d1916-c9e9-0310-b8de-cf0c9472ead5
2006-09-27 20:35:02 +00:00

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/*
* LIBVJE - veejay fx library
*
* Copyright(C)2006 Niels Elburg <nelburg@looze.net>
* See COPYING for software license and distribution details
*/
#define IS_LIVIDO_PLUGIN
#include <livido.h>
LIVIDO_PLUGIN
#include "utils.h"
#include "livido-utils.c"
livido_init_f init_instance( livido_port_t *my_instance )
{
return LIVIDO_NO_ERROR;
}
livido_deinit_f deinit_instance( livido_port_t *my_instance )
{
return LIVIDO_NO_ERROR;
}
/* PenCil sketch pixel Functions
applies some artithematic on pixel a and b,
*/
typedef uint8_t (*_pcf) (uint8_t a, uint8_t b, int t_max);
typedef uint8_t (*_pcbcr) (uint8_t a, uint8_t b);
static uint8_t _pcf_dneg(uint8_t a, uint8_t b, int t_max)
{
uint8_t p =
255 - ( abs ( (255 - abs((255-a)-a)) - (255-abs((255-b)-b))) );
p = (abs(abs(p-b) - b));
return p;
}
static uint8_t _pcf_lghtn(uint8_t a, uint8_t b, int t_max)
{
uint8_t p = (a > b ? a : b );
return p;
}
static uint8_t _pcf_dneg2(uint8_t a,uint8_t b, int t_max)
{
uint8_t p = ( 255 - abs ( (255-a)- b ) );
return p;
}
static uint8_t _pcf_min(uint8_t a, uint8_t b, int t_max)
{
uint8_t p = ( (b < a) ? b : a);
p = ( 255 - abs( (255-p) - b ) );
return p;
}
static uint8_t _pcf_max(uint8_t a,uint8_t b, int t_max)
{
int p = ( (b > a) ? b : a);
p = ( 255 - ((255 - b) * (255 - b)) / p);
return (uint8_t)p;
}
static uint8_t _pcf_pq(uint8_t a,uint8_t b, int t_max)
{
int p = 255 - ((255-a) * (255-a)) / a;
int q = 255 - ((255-b) * (255-b)) / b;
p = ( 255 - ((255-p) * (255 - a)) / q);
return (uint8_t)p;
}
static uint8_t _pcf_color(uint8_t a, uint8_t b, int t_max)
{
uint8_t p =
255 - ( abs ( (255 - abs((255-a)-a)) - (255-abs((255-b)-b))) );
p = (abs(abs(p-b) - b));
p = p + b - (( p * b ) >> 8);
return p;
}
static uint8_t _pcbcr_color(uint8_t a,uint8_t b)
{
int p = a - 128;
int q = b - 128;
return ( p + q - (( p * q ) >> 8) ) + 128 ;
}
static uint8_t _pcf_none(uint8_t a, uint8_t b, int t_max)
{
if( a >= 16 || a <= t_max) a = 16 ; else a = 240;
return a;
}
/* get a pointer to a pixel function */
static _pcf _get_pcf(int type)
{
switch(type)
{
case 0: return &_pcf_dneg;
case 3: return &_pcf_lghtn;
case 1: return &_pcf_min;
case 2: return &_pcf_max;
case 5: return &_pcf_pq;
case 6: return &_pcf_dneg2;
case 7: return &_pcf_color;
}
return &_pcf_none;
}
/* PenCil sketch pixel Functions
applies some artithematic on pixel a and b,
*/
livido_process_f process_instance( livido_port_t *my_instance, double timecode )
{
int len =0;
int i = 0;
uint8_t *A[4] = {NULL,NULL,NULL,NULL};
uint8_t *O[4]= {NULL,NULL,NULL,NULL};
int palette[3];
int w[3];
int h[3];
int error = lvd_extract_channel_values( my_instance, "in_channels", 0, &w[0], &h[0], A, &palette[0] );
if( error != LIVIDO_NO_ERROR )
return LIVIDO_ERROR_HARDWARE; //@ error codes in livido flanky
error = lvd_extract_channel_values( my_instance, "out_channels", 0, &w[1],&h[1], O,&palette[1] );
if( error != LIVIDO_NO_ERROR )
return LIVIDO_ERROR_HARDWARE; //@ error codes in livido flanky
#ifdef STRICT_CHECKING
assert( w[0] == w[1] );
assert( h[0] == h[1] );
assert( palette[0] == palette[1] );
assert( A[0] != NULL );
assert( A[1] != NULL );
assert( A[2] != NULL );
assert( O[0] != NULL );
assert( O[1] != NULL );
assert( O[2] != NULL );
#endif
int uv_len = lvd_uv_plane_len( palette[0],w[0],h[0] );
len = w[0] * h[0];
int type = lvd_extract_param_index( my_instance, "in_parameters", 0 );
double lt = lvd_extract_param_number( my_instance, "in_parameters", 1 );
double ht = lvd_extract_param_number( my_instance, "in_parameters",2 );
uint8_t min_threshold = 255 * lt;
uint8_t max_threshold = 255 * ht;
int m,d;
/* get a pointer to a pixel blend function */
_pcf _pff = _get_pcf(type);
_pcbcr _pcbcrff = &_pcbcr_color;
int rlen = len - w[0] - 1;
uint8_t y,yb;
for ( i = 0; i < rlen ;i ++ )
{
yb = y = A[0][i];
if(yb<16)
yb=16;
if( y >= min_threshold && y <= max_threshold )
{
// sharpen
m = ( A[0][i+1] + A[0][(i + w[0])] + A[0][ (i + w[0] + 1)] + 2 ) >> 2;
d = y - m;
d *= 500;
d /= 100;
m = m + d;
/* a magical forumula to combine the pixel with the original*/
y = ((((y << 1) - (255 - m))>>1) + A[0][i])>>1;
if(y < 16) y =16;
O[0][i] = _pff(y,yb,max_threshold);
}
else
O[0][i] = 0xff;
}
if( type != y )
{
livido_memset( O[1], 128, uv_len );
livido_memset( O[2], 128, uv_len );
}
else
{
uint8_t u,v;
for( i = 0; i < uv_len; i ++ )
{
u = A[1][i];
v = A[2][i];
if( u < 16 ) u = 16;
if( v < 16 ) v = 16;
O[1][i] = _pcbcrff(128, u);
O[2][i] = _pcbcrff(128, v);
}
}
return LIVIDO_NO_ERROR;
}
livido_port_t *livido_setup(livido_setup_t list[], int version)
{
LIVIDO_IMPORT(list);
livido_port_t *port = NULL;
livido_port_t *in_params[3];
livido_port_t *in_chans[1];
livido_port_t *out_chans[1];
livido_port_t *info = NULL;
livido_port_t *filter = NULL;
info = livido_port_new( LIVIDO_PORT_TYPE_PLUGIN_INFO );
port = info;
livido_set_string_value( port, "maintainer", "Niels");
livido_set_string_value( port, "version","1");
filter = livido_port_new( LIVIDO_PORT_TYPE_FILTER_CLASS );
livido_set_int_value( filter, "api_version", LIVIDO_API_VERSION );
livido_set_voidptr_value( filter, "deinit_func", &deinit_instance );
livido_set_voidptr_value( filter, "init_func", &init_instance );
livido_set_voidptr_value( filter, "process_func", &process_instance );
port = filter;
livido_set_string_value( port, "name", "Pencil Sketch");
livido_set_string_value( port, "description", "Artistify Image");
livido_set_string_value( port, "author", "Niels Elburg");
livido_set_int_value( port, "flags", 0);
livido_set_string_value( port, "license", "GPL2");
livido_set_int_value( port, "version", 1);
int palettes0[] = {
LIVIDO_PALETTE_YUV420P,
LIVIDO_PALETTE_YUV422P,
LIVIDO_PALETTE_YUV444P,
0
};
in_chans[0] = livido_port_new( LIVIDO_PORT_TYPE_CHANNEL_TEMPLATE );
port = in_chans[0];
livido_set_string_value( port, "name", "Channel A");
livido_set_int_array( port, "palette_list", 3, palettes0);
livido_set_int_value( port, "flags", 0);
out_chans[0] = livido_port_new( LIVIDO_PORT_TYPE_CHANNEL_TEMPLATE );
port = out_chans[0];
livido_set_string_value( port, "name", "Output Channel");
livido_set_int_array( port, "palette_list", 3, palettes0);
livido_set_int_value( port, "flags", 0);
in_params[0] = livido_port_new( LIVIDO_PORT_TYPE_PARAMETER_TEMPLATE );
port = in_params[0];
livido_set_string_value(port, "name", "Mode" );
livido_set_string_value(port, "kind", "INDEX" );
livido_set_int_value( port, "min", 0 );
livido_set_int_value( port, "max", 8 );
livido_set_int_value( port, "default", 0 );
livido_set_string_value( port, "description" ,"Pencil Type");
in_params[1] = livido_port_new( LIVIDO_PORT_TYPE_PARAMETER_TEMPLATE );
port = in_params[1];
livido_set_string_value(port, "name", "Min Threshold" );
livido_set_string_value(port, "kind", "NUMBER" );
livido_set_double_value( port, "min", 0.0 );
livido_set_double_value( port, "max", 1.0 );
livido_set_double_value( port, "default", 0.1 );
livido_set_string_value( port, "description" ,"Minimum threshold");
in_params[2] = livido_port_new( LIVIDO_PORT_TYPE_PARAMETER_TEMPLATE );
port = in_params[2];
livido_set_string_value(port, "name", "Maximum Threshold" );
livido_set_string_value(port, "kind", "NUMBER" );
livido_set_double_value( port, "min", 0.0 );
livido_set_double_value( port, "max", 1.0 );
livido_set_double_value( port, "default", 0.9 );
livido_set_string_value( port, "description" ,"Maximum threshold");
livido_set_portptr_array( filter, "in_channel_templates", 1 , in_chans );
livido_set_portptr_array( filter, "out_parameter_templates",0, NULL );
livido_set_portptr_array( filter, "in_parameter_templates",3, in_params );
livido_set_portptr_array( filter, "out_channel_templates", 1, out_chans );
livido_set_portptr_value(info, "filters", filter);
return info;
}
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