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#ifdef HAVE_CONFIG_H |
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| 30 |
# include "config.h" |
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| 31 |
#endif |
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| 32 |
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| 33 |
#include <math.h> |
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| 34 |
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| 35 |
#include <vlc_common.h> |
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| 36 |
#include <vlc_plugin.h> |
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| 37 |
#include <vlc_sout.h> |
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| 38 |
#include <vlc_vout.h> |
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| 39 |
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| 40 |
#include "vlc_filter.h" |
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| 41 |
#include "filter_picture.h" |
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| 42 |
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| 43 |
enum { GRADIENT, EDGE, HOUGH }; |
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| 44 |
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| 45 |
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| 46 |
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| 47 |
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| 48 |
static int Create ( vlc_object_t * ); |
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| 49 |
static void Destroy ( vlc_object_t * ); |
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| 50 |
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| 51 |
static picture_t *Filter( filter_t *, picture_t * ); |
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| 52 |
static int GradientCallback( vlc_object_t *, char const *, |
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| 53 |
vlc_value_t, vlc_value_t, |
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| 54 |
void * ); |
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| 55 |
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| 56 |
static void FilterGradient( filter_t *, picture_t *, picture_t * ); |
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| 57 |
static void FilterEdge ( filter_t *, picture_t *, picture_t * ); |
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| 58 |
static void FilterHough ( filter_t *, picture_t *, picture_t * ); |
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| 59 |
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| 60 |
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| 61 |
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| 62 |
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| 63 |
#define MODE_TEXT N_("Distort mode") |
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| 64 |
#define MODE_LONGTEXT N_("Distort mode, one of \"gradient\", \"edge\" and \"hough\".") |
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| 65 |
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| 66 |
#define GRADIENT_TEXT N_("Gradient image type") |
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| 67 |
#define GRADIENT_LONGTEXT N_("Gradient image type (0 or 1). 0 will " \ |
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| 68 |
"turn the image to white while 1 will keep colors." ) |
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| 69 |
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| 70 |
#define CARTOON_TEXT N_("Apply cartoon effect") |
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| 71 |
#define CARTOON_LONGTEXT N_("Apply cartoon effect. It is only used by " \ |
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| 72 |
"\"gradient\" and \"edge\".") |
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| 73 |
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| 74 |
static const char *const mode_list[] = { "gradient", "edge", "hough" }; |
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| 75 |
static const char *const mode_list_text[] = { N_("Gradient"), N_("Edge"), N_("Hough") }; |
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| 76 |
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| 77 |
#define FILTER_PREFIX "gradient-" |
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| 78 |
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| 79 |
vlc_module_begin(); |
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| 80 |
set_description( N_("Gradient video filter") ); |
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| 81 |
set_shortname( N_( "Gradient" )); |
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| 82 |
set_capability( "video filter2", 0 ); |
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| 83 |
set_category( CAT_VIDEO ); |
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| 84 |
set_subcategory( SUBCAT_VIDEO_VFILTER ); |
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| 85 |
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| 86 |
add_string( FILTER_PREFIX "mode", "gradient", NULL, |
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| 87 |
MODE_TEXT, MODE_LONGTEXT, false ); |
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| 88 |
change_string_list( mode_list, mode_list_text, 0 ); |
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| 89 |
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| 90 |
add_integer_with_range( FILTER_PREFIX "type", 0, 0, 1, NULL, |
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| 91 |
GRADIENT_TEXT, GRADIENT_LONGTEXT, false ); |
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| 92 |
add_bool( FILTER_PREFIX "cartoon", 1, NULL, |
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| 93 |
CARTOON_TEXT, CARTOON_LONGTEXT, false ); |
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| 94 |
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| 95 |
add_shortcut( "gradient" ); |
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| 96 |
set_callbacks( Create, Destroy ); |
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| 97 |
vlc_module_end(); |
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| 98 |
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| 99 |
static const char *const ppsz_filter_options[] = { |
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| 100 |
"mode", "type", "cartoon", NULL |
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| 101 |
}; |
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| 102 |
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| 103 |
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| 104 |
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| 105 |
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| 106 |
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| 107 |
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| 108 |
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| 109 |
struct filter_sys_t |
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| 110 |
{ |
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| 111 |
int i_mode; |
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| 112 |
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| 113 |
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| 114 |
int i_gradient_type; |
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| 115 |
bool b_cartoon; |
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| 116 |
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| 117 |
uint32_t *p_buf32; |
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| 118 |
uint32_t *p_buf32_bis; |
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| 119 |
uint8_t *p_buf8; |
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| 120 |
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| 121 |
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| 122 |
int *p_pre_hough; |
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| 123 |
}; |
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| 124 |
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| 125 |
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| 126 |
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| 127 |
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| 128 |
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| 129 |
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| 130 |
static int Create( vlc_object_t *p_this ) |
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| 131 |
{ |
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| 132 |
filter_t *p_filter = (filter_t *)p_this; |
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| 133 |
char *psz_method; |
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| 134 |
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| 135 |
switch( p_filter->fmt_in.video.i_chroma ) |
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| 136 |
{ |
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| 137 |
CASE_PLANAR_YUV |
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| 138 |
break; |
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| 139 |
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| 140 |
default: |
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| 141 |
msg_Err( p_filter, "Unsupported input chroma (%4s)", |
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| 142 |
(char*)&(p_filter->fmt_in.video.i_chroma) ); |
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| 143 |
return VLC_EGENERIC; |
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| 144 |
} |
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| 145 |
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| 146 |
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| 147 |
p_filter->p_sys = malloc( sizeof( filter_sys_t ) ); |
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| 148 |
if( p_filter->p_sys == NULL ) |
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| 149 |
return VLC_ENOMEM; |
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| 150 |
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| 151 |
p_filter->pf_video_filter = Filter; |
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| 152 |
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| 153 |
p_filter->p_sys->p_pre_hough = NULL; |
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| 154 |
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| 155 |
config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options, |
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| 156 |
p_filter->p_cfg ); |
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| 157 |
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| 158 |
if( !(psz_method = |
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| 159 |
var_CreateGetNonEmptyStringCommand( p_filter, FILTER_PREFIX "mode" )) ) |
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| 160 |
{ |
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| 161 |
msg_Err( p_filter, "configuration variable " |
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| 162 |
FILTER_PREFIX "mode empty" ); |
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| 163 |
p_filter->p_sys->i_mode = GRADIENT; |
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| 164 |
} |
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| 165 |
else |
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| 166 |
{ |
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| 167 |
if( !strcmp( psz_method, "gradient" ) ) |
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| 168 |
{ |
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| 169 |
p_filter->p_sys->i_mode = GRADIENT; |
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| 170 |
} |
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| 171 |
else if( !strcmp( psz_method, "edge" ) ) |
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| 172 |
{ |
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| 173 |
p_filter->p_sys->i_mode = EDGE; |
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| 174 |
} |
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| 175 |
else if( !strcmp( psz_method, "hough" ) ) |
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| 176 |
{ |
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| 177 |
p_filter->p_sys->i_mode = HOUGH; |
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| 178 |
} |
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| 179 |
else |
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| 180 |
{ |
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| 181 |
msg_Err( p_filter, "no valid gradient mode provided (%s)", psz_method ); |
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| 182 |
p_filter->p_sys->i_mode = GRADIENT; |
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| 183 |
} |
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| 184 |
} |
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| 185 |
free( psz_method ); |
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| 186 |
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| 187 |
p_filter->p_sys->i_gradient_type = |
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| 188 |
var_CreateGetIntegerCommand( p_filter, FILTER_PREFIX "type" ); |
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| 189 |
p_filter->p_sys->b_cartoon = |
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| 190 |
var_CreateGetBoolCommand( p_filter, FILTER_PREFIX "cartoon" ); |
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| 191 |
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| 192 |
var_AddCallback( p_filter, FILTER_PREFIX "mode", |
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| 193 |
GradientCallback, p_filter->p_sys ); |
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| 194 |
var_AddCallback( p_filter, FILTER_PREFIX "type", |
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| 195 |
GradientCallback, p_filter->p_sys ); |
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| 196 |
var_AddCallback( p_filter, FILTER_PREFIX "cartoon", |
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| 197 |
GradientCallback, p_filter->p_sys ); |
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| 198 |
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| 199 |
p_filter->p_sys->p_buf32 = NULL; |
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| 200 |
p_filter->p_sys->p_buf32_bis = NULL; |
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| 201 |
p_filter->p_sys->p_buf8 = NULL; |
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| 202 |
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| 203 |
return VLC_SUCCESS; |
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| 204 |
} |
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| 205 |
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| 206 |
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| 207 |
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| 208 |
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| 209 |
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| 210 |
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| 211 |
static void Destroy( vlc_object_t *p_this ) |
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| 212 |
{ |
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| 213 |
filter_t *p_filter = (filter_t *)p_this; |
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| 214 |
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| 215 |
free( p_filter->p_sys->p_buf32 ); |
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| 216 |
free( p_filter->p_sys->p_buf32_bis ); |
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| 217 |
free( p_filter->p_sys->p_buf8 ); |
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| 218 |
free( p_filter->p_sys->p_pre_hough ); |
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| 219 |
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| 220 |
free( p_filter->p_sys ); |
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| 221 |
} |
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| 222 |
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| 223 |
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| 224 |
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| 225 |
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| 226 |
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| 227 |
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| 228 |
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| 229 |
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| 230 |
static picture_t *Filter( filter_t *p_filter, picture_t *p_pic ) |
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| 231 |
{ |
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| 232 |
picture_t *p_outpic; |
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| 233 |
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| 234 |
if( !p_pic ) return NULL; |
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| 235 |
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| 236 |
p_outpic = filter_NewPicture( p_filter ); |
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| 237 |
if( !p_outpic ) |
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| 238 |
{ |
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| 239 |
picture_Release( p_pic ); |
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| 240 |
return NULL; |
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| 241 |
} |
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| 242 |
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| 243 |
switch( p_filter->p_sys->i_mode ) |
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| 244 |
{ |
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| 245 |
case EDGE: |
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| 246 |
FilterEdge( p_filter, p_pic, p_outpic ); |
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| 247 |
break; |
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| 248 |
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| 249 |
case GRADIENT: |
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| 250 |
FilterGradient( p_filter, p_pic, p_outpic ); |
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| 251 |
break; |
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| 252 |
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| 253 |
case HOUGH: |
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| 254 |
FilterHough( p_filter, p_pic, p_outpic ); |
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| 255 |
break; |
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| 256 |
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| 257 |
default: |
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| 258 |
break; |
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| 259 |
} |
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| 260 |
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| 261 |
return CopyInfoAndRelease( p_outpic, p_pic ); |
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| 262 |
} |
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| 263 |
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| 264 |
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| 265 |
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| 266 |
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| 267 |
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| 270 |
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| 271 |
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| 272 |
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| 273 |
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| 274 |
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| 275 |
static void GaussianConvolution( picture_t *p_inpic, uint32_t *p_smooth ) |
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| 276 |
{ |
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| 277 |
const uint8_t *p_inpix = p_inpic->p[Y_PLANE].p_pixels; |
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| 278 |
const int i_src_pitch = p_inpic->p[Y_PLANE].i_pitch; |
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| 279 |
const int i_src_visible = p_inpic->p[Y_PLANE].i_visible_pitch; |
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| 280 |
const int i_num_lines = p_inpic->p[Y_PLANE].i_visible_lines; |
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| 281 |
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| 282 |
int x,y; |
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| 283 |
for( y = 2; y < i_num_lines - 2; y++ ) |
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| 284 |
{ |
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| 285 |
for( x = 2; x < i_src_visible - 2; x++ ) |
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| 286 |
{ |
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| 287 |
p_smooth[y*i_src_visible+x] = (uint32_t)( |
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| 288 |
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| 289 |
( p_inpix[(y-2)*i_src_pitch+x-2] ) |
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| 290 |
+ ((p_inpix[(y-2)*i_src_pitch+x-1] |
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| 291 |
+ p_inpix[(y-2)*i_src_pitch+x] |
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| 292 |
+ p_inpix[(y-2)*i_src_pitch+x+1])<<1 ) |
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| 293 |
+ ( p_inpix[(y-2)*i_src_pitch+x+2] ) |
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| 294 |
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| 295 |
+ ((p_inpix[(y-1)*i_src_pitch+x-2] |
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| 296 |
+ ( p_inpix[(y-1)*i_src_pitch+x-1]<<1 ) |
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| 297 |
+ ( p_inpix[(y-1)*i_src_pitch+x]*3 ) |
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| 298 |
+ ( p_inpix[(y-1)*i_src_pitch+x+1]<<1 ) |
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| 299 |
+ p_inpix[(y-1)*i_src_pitch+x+2] |
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| 300 |
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| 301 |
+ p_inpix[y*i_src_pitch+x-2] |
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| 302 |
+ ( p_inpix[y*i_src_pitch+x-1]*3 ) |
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| 303 |
+ ( p_inpix[y*i_src_pitch+x]<<2 ) |
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| 304 |
+ ( p_inpix[y*i_src_pitch+x+1]*3 ) |
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| 305 |
+ p_inpix[y*i_src_pitch+x+2] |
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| 306 |
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| 307 |
+ p_inpix[(y+1)*i_src_pitch+x-2] |
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| 308 |
+ ( p_inpix[(y+1)*i_src_pitch+x-1]<<1 ) |
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| 309 |
+ ( p_inpix[(y+1)*i_src_pitch+x]*3 ) |
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| 310 |
+ ( p_inpix[(y+1)*i_src_pitch+x+1]<<1 ) |
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| 311 |
+ p_inpix[(y+1)*i_src_pitch+x+2] )<<1 ) |
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| 312 |
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| 313 |
+ ( p_inpix[(y+2)*i_src_pitch+x-2] ) |
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| 314 |
+ ((p_inpix[(y+2)*i_src_pitch+x-1] |
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| 315 |
+ p_inpix[(y+2)*i_src_pitch+x] |
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| 316 |
+ p_inpix[(y+2)*i_src_pitch+x+1])<<1 ) |
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| 317 |
+ ( p_inpix[(y+2)*i_src_pitch+x+2] ) |
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| 318 |
) >> 6 ; |
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| 319 |
} |
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| 320 |
} |
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| 321 |
} |
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| 322 |
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| 323 |
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| 324 |
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| 325 |
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| 326 |
static void FilterGradient( filter_t *p_filter, picture_t *p_inpic, |
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| 327 |
picture_t *p_outpic ) |
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| 328 |
{ |
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| 329 |
int x, y; |
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| 330 |
const int i_src_pitch = p_inpic->p[Y_PLANE].i_pitch; |
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| 331 |
const int i_src_visible = p_inpic->p[Y_PLANE].i_visible_pitch; |
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| 332 |
const int i_dst_pitch = p_outpic->p[Y_PLANE].i_pitch; |
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| 333 |
const int i_num_lines = p_inpic->p[Y_PLANE].i_visible_lines; |
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| 334 |
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| 335 |
const uint8_t *p_inpix = p_inpic->p[Y_PLANE].p_pixels; |
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| 336 |
uint8_t *p_outpix = p_outpic->p[Y_PLANE].p_pixels; |
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| 337 |
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| 338 |
uint32_t *p_smooth; |
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| 339 |
if( !p_filter->p_sys->p_buf32 ) |
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| 340 |
p_filter->p_sys->p_buf32 = |
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| 341 |
(uint32_t *)malloc( i_num_lines * i_src_visible * sizeof(uint32_t)); |
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| 342 |
p_smooth = p_filter->p_sys->p_buf32; |
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| 343 |
|
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| 344 |
if( !p_smooth ) return; |
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| 345 |
|
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| 346 |
if( p_filter->p_sys->b_cartoon ) |
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| 347 |
{ |
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| 348 |
vlc_memcpy( p_outpic->p[U_PLANE].p_pixels, |
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| 349 |
p_inpic->p[U_PLANE].p_pixels, |
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| 350 |
p_outpic->p[U_PLANE].i_lines * p_outpic->p[U_PLANE].i_pitch ); |
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| 351 |
vlc_memcpy( p_outpic->p[V_PLANE].p_pixels, |
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| 352 |
p_inpic->p[V_PLANE].p_pixels, |
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| 353 |
p_outpic->p[V_PLANE].i_lines * p_outpic->p[V_PLANE].i_pitch ); |
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| 354 |
} |
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| 355 |
else |
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| 356 |
{ |
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| 357 |
vlc_memset( p_outpic->p[U_PLANE].p_pixels, 0x80, |
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| 358 |
p_outpic->p[U_PLANE].i_lines * p_outpic->p[U_PLANE].i_pitch ); |
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| 359 |
vlc_memset( p_outpic->p[V_PLANE].p_pixels, 0x80, |
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| 360 |
p_outpic->p[V_PLANE].i_lines * p_outpic->p[V_PLANE].i_pitch ); |
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| 361 |
} |
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| 362 |
|
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| 363 |
GaussianConvolution( p_inpic, p_smooth ); |
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| 364 |
|
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| 365 |
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| 366 |
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| 367 |
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| 368 |
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| 369 |
|
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| 370 |
|
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| 371 |
#define FOR \ |
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| 372 |
for( y = 1; y < i_num_lines - 1; y++ ) \ |
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| 373 |
{ \ |
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| 374 |
for( x = 1; x < i_src_visible - 1; x++ ) \ |
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| 375 |
{ \ |
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| 376 |
const uint32_t a = \ |
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| 377 |
( \ |
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| 378 |
abs( \ |
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| 379 |
( p_smooth[(y-1)*i_src_visible+x-1] \ |
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| 380 |
- p_smooth[(y+1)*i_src_visible+x-1] ) \ |
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| 381 |
+ ( ( p_smooth[(y-1)*i_src_visible+x] \ |
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| 382 |
- p_smooth[(y+1)*i_src_visible+x] ) <<1 ) \ |
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| 383 |
+ ( p_smooth[(y-1)*i_src_visible+x+1] \ |
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| 384 |
- p_smooth[(y+1)*i_src_visible+x+1] ) \ |
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| 385 |
) \ |
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| 386 |
+ \ |
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| 387 |
abs( \ |
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| 388 |
( p_smooth[(y-1)*i_src_visible+x-1] \ |
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| 389 |
- p_smooth[(y-1)*i_src_visible+x+1] ) \ |
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| 390 |
+ ( ( p_smooth[y*i_src_visible+x-1] \ |
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| 391 |
- p_smooth[y*i_src_visible+x+1] ) <<1 ) \ |
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| 392 |
+ ( p_smooth[(y+1)*i_src_visible+x-1] \ |
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| 393 |
- p_smooth[(y+1)*i_src_visible+x+1] ) \ |
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| 394 |
) \ |
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| 395 |
); |
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| 396 |
if( p_filter->p_sys->i_gradient_type ) |
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| 397 |
{ |
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| 398 |
if( p_filter->p_sys->b_cartoon ) |
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| 399 |
{ |
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| 400 |
FOR |
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| 401 |
if( a > 60 ) |
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| 402 |
{ |
|---|
| 403 |
p_outpix[y*i_dst_pitch+x] = 0x00; |
|---|
| 404 |
} |
|---|
| 405 |
else |
|---|
| 406 |
{ |
|---|
| 407 |
if( p_smooth[y*i_src_visible+x] > 0xa0 ) |
|---|
| 408 |
p_outpix[y*i_dst_pitch+x] = |
|---|
| 409 |
0xff - ((0xff - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 410 |
else if( p_smooth[y*i_src_visible+x] > 0x70 ) |
|---|
| 411 |
p_outpix[y*i_dst_pitch+x] = |
|---|
| 412 |
0xa0 - ((0xa0 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 413 |
else if( p_smooth[y*i_src_visible+x] > 0x28 ) |
|---|
| 414 |
p_outpix[y*i_dst_pitch+x] = |
|---|
| 415 |
0x70 - ((0x70 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 416 |
else |
|---|
| 417 |
p_outpix[y*i_dst_pitch+x] = |
|---|
| 418 |
0x28 - ((0x28 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 419 |
} |
|---|
| 420 |
}} |
|---|
| 421 |
} |
|---|
| 422 |
else |
|---|
| 423 |
{ |
|---|
| 424 |
FOR |
|---|
| 425 |
p_outpix[y*i_dst_pitch+x] = clip_uint8_vlc( a ); |
|---|
| 426 |
}} |
|---|
| 427 |
} |
|---|
| 428 |
} |
|---|
| 429 |
else |
|---|
| 430 |
{ |
|---|
| 431 |
FOR |
|---|
| 432 |
if( a>>8 ) |
|---|
| 433 |
p_outpix[y*i_dst_pitch+x] = 0; |
|---|
| 434 |
else |
|---|
| 435 |
p_outpix[y*i_dst_pitch+x] = 0xff-(uint8_t)a; |
|---|
| 436 |
}} |
|---|
| 437 |
} |
|---|
| 438 |
#undef FOR |
|---|
| 439 |
} |
|---|
| 440 |
|
|---|
| 441 |
|
|---|
| 442 |
|
|---|
| 443 |
|
|---|
| 444 |
|
|---|
| 445 |
|
|---|
| 446 |
|
|---|
| 447 |
|
|---|
| 448 |
|
|---|
| 449 |
#define THETA_Y 0 |
|---|
| 450 |
|
|---|
| 451 |
#define THETA_X 1 |
|---|
| 452 |
|
|---|
| 453 |
#define THETA_P 2 |
|---|
| 454 |
|
|---|
| 455 |
#define THETA_M 3 |
|---|
| 456 |
static void FilterEdge( filter_t *p_filter, picture_t *p_inpic, |
|---|
| 457 |
picture_t *p_outpic ) |
|---|
| 458 |
{ |
|---|
| 459 |
int x, y; |
|---|
| 460 |
|
|---|
| 461 |
const int i_src_pitch = p_inpic->p[Y_PLANE].i_pitch; |
|---|
| 462 |
const int i_src_visible = p_inpic->p[Y_PLANE].i_visible_pitch; |
|---|
| 463 |
const int i_dst_pitch = p_outpic->p[Y_PLANE].i_pitch; |
|---|
| 464 |
const int i_num_lines = p_inpic->p[Y_PLANE].i_visible_lines; |
|---|
| 465 |
|
|---|
| 466 |
const uint8_t *p_inpix = p_inpic->p[Y_PLANE].p_pixels; |
|---|
| 467 |
uint8_t *p_outpix = p_outpic->p[Y_PLANE].p_pixels; |
|---|
| 468 |
|
|---|
| 469 |
uint32_t *p_smooth; |
|---|
| 470 |
uint32_t *p_grad; |
|---|
| 471 |
uint8_t *p_theta; |
|---|
| 472 |
|
|---|
| 473 |
if( !p_filter->p_sys->p_buf32 ) |
|---|
| 474 |
p_filter->p_sys->p_buf32 = |
|---|
| 475 |
(uint32_t *)malloc( i_num_lines * i_src_visible * sizeof(uint32_t)); |
|---|
| 476 |
p_smooth = p_filter->p_sys->p_buf32; |
|---|
| 477 |
|
|---|
| 478 |
if( !p_filter->p_sys->p_buf32_bis ) |
|---|
| 479 |
p_filter->p_sys->p_buf32_bis = |
|---|
| 480 |
(uint32_t *)malloc( i_num_lines * i_src_visible * sizeof(uint32_t)); |
|---|
| 481 |
p_grad = p_filter->p_sys->p_buf32_bis; |
|---|
| 482 |
|
|---|
| 483 |
if( !p_filter->p_sys->p_buf8 ) |
|---|
| 484 |
p_filter->p_sys->p_buf8 = |
|---|
| 485 |
(uint8_t *)malloc( i_num_lines * i_src_visible * sizeof(uint8_t)); |
|---|
| 486 |
p_theta = p_filter->p_sys->p_buf8; |
|---|
| 487 |
|
|---|
| 488 |
if( !p_smooth || !p_grad || !p_theta ) return; |
|---|
| 489 |
|
|---|
| 490 |
if( p_filter->p_sys->b_cartoon ) |
|---|
| 491 |
{ |
|---|
| 492 |
vlc_memcpy( p_outpic->p[U_PLANE].p_pixels, |
|---|
| 493 |
p_inpic->p[U_PLANE].p_pixels, |
|---|
| 494 |
p_outpic->p[U_PLANE].i_lines * p_outpic->p[U_PLANE].i_pitch ); |
|---|
| 495 |
vlc_memcpy( p_outpic->p[V_PLANE].p_pixels, |
|---|
| 496 |
p_inpic->p[V_PLANE].p_pixels, |
|---|
| 497 |
p_outpic->p[V_PLANE].i_lines * p_outpic->p[V_PLANE].i_pitch ); |
|---|
| 498 |
} |
|---|
| 499 |
else |
|---|
| 500 |
{ |
|---|
| 501 |
vlc_memset( p_outpic->p[Y_PLANE].p_pixels, 0xff, |
|---|
| 502 |
p_outpic->p[Y_PLANE].i_lines * p_outpic->p[Y_PLANE].i_pitch ); |
|---|
| 503 |
vlc_memset( p_outpic->p[U_PLANE].p_pixels, 0x80, |
|---|
| 504 |
p_outpic->p[U_PLANE].i_lines * p_outpic->p[U_PLANE].i_pitch ); |
|---|
| 505 |
vlc_memset( p_outpic->p[V_PLANE].p_pixels, 0x80, |
|---|
| 506 |
p_outpic->p[V_PLANE].i_lines * p_outpic->p[V_PLANE].i_pitch ); |
|---|
| 507 |
} |
|---|
| 508 |
|
|---|
| 509 |
GaussianConvolution( p_inpic, p_smooth ); |
|---|
| 510 |
|
|---|
| 511 |
|
|---|
| 512 |
|
|---|
| 513 |
|
|---|
| 514 |
|
|---|
| 515 |
|
|---|
| 516 |
|
|---|
| 517 |
for( y = 1; y < i_num_lines - 1; y++ ) |
|---|
| 518 |
{ |
|---|
| 519 |
for( x = 1; x < i_src_visible - 1; x++ ) |
|---|
| 520 |
{ |
|---|
| 521 |
|
|---|
| 522 |
const int gradx = |
|---|
| 523 |
( p_smooth[(y-1)*i_src_visible+x-1] |
|---|
| 524 |
- p_smooth[(y+1)*i_src_visible+x-1] ) |
|---|
| 525 |
+ ( ( p_smooth[(y-1)*i_src_visible+x] |
|---|
| 526 |
- p_smooth[(y+1)*i_src_visible+x] ) <<1 ) |
|---|
| 527 |
+ ( p_smooth[(y-1)*i_src_visible+x+1] |
|---|
| 528 |
- p_smooth[(y+1)*i_src_visible+x+1] ); |
|---|
| 529 |
const int grady = |
|---|
| 530 |
( p_smooth[(y-1)*i_src_visible+x-1] |
|---|
| 531 |
- p_smooth[(y-1)*i_src_visible+x+1] ) |
|---|
| 532 |
+ ( ( p_smooth[y*i_src_visible+x-1] |
|---|
| 533 |
- p_smooth[y*i_src_visible+x+1] ) <<1 ) |
|---|
| 534 |
+ ( p_smooth[(y+1)*i_src_visible+x-1] |
|---|
| 535 |
- p_smooth[(y+1)*i_src_visible+x+1] ); |
|---|
| 536 |
|
|---|
| 537 |
p_grad[y*i_src_visible+x] = (uint32_t)(abs( gradx ) + abs( grady )); |
|---|
| 538 |
|
|---|
| 539 |
|
|---|
| 540 |
|
|---|
| 541 |
|
|---|
| 542 |
|
|---|
| 543 |
if( (grady<<1) > gradx ) |
|---|
| 544 |
p_theta[y*i_src_visible+x] = THETA_P; |
|---|
| 545 |
else if( (grady<<1) < -gradx ) |
|---|
| 546 |
p_theta[y*i_src_visible+x] = THETA_M; |
|---|
| 547 |
else if( !gradx || abs(grady) > abs(gradx)<<1 ) |
|---|
| 548 |
p_theta[y*i_src_visible+x] = THETA_Y; |
|---|
| 549 |
else |
|---|
| 550 |
p_theta[y*i_src_visible+x] = THETA_X; |
|---|
| 551 |
} |
|---|
| 552 |
} |
|---|
| 553 |
|
|---|
| 554 |
|
|---|
| 555 |
for( y = 1; y < i_num_lines - 1; y++ ) |
|---|
| 556 |
{ |
|---|
| 557 |
for( x = 1; x < i_src_visible - 1; x++ ) |
|---|
| 558 |
{ |
|---|
| 559 |
if( p_grad[y*i_src_visible+x] > 40 ) |
|---|
| 560 |
{ |
|---|
| 561 |
switch( p_theta[y*i_src_visible+x] ) |
|---|
| 562 |
{ |
|---|
| 563 |
case THETA_Y: |
|---|
| 564 |
if( p_grad[y*i_src_visible+x] > p_grad[(y-1)*i_src_visible+x] |
|---|
| 565 |
&& p_grad[y*i_src_visible+x] > p_grad[(y+1)*i_src_visible+x] ) |
|---|
| 566 |
{ |
|---|
| 567 |
p_outpix[y*i_dst_pitch+x] = 0; |
|---|
| 568 |
break; |
|---|
| 569 |
} else goto colorize; |
|---|
| 570 |
case THETA_P: |
|---|
| 571 |
if( p_grad[y*i_src_visible+x] > p_grad[(y-1)*i_src_visible+x-1] |
|---|
| 572 |
&& p_grad[y*i_src_visible+x] > p_grad[(y+1)*i_src_visible+x+1] ) |
|---|
| 573 |
{ |
|---|
| 574 |
p_outpix[y*i_dst_pitch+x] = 0; |
|---|
| 575 |
break; |
|---|
| 576 |
} else goto colorize; |
|---|
| 577 |
case THETA_M: |
|---|
| 578 |
if( p_grad[y*i_src_visible+x] > p_grad[(y-1)*i_src_visible+x+1] |
|---|
| 579 |
&& p_grad[y*i_src_visible+x] > p_grad[(y+1)*i_src_visible+x-1] ) |
|---|
| 580 |
{ |
|---|
| 581 |
p_outpix[y*i_dst_pitch+x] = 0; |
|---|
| 582 |
break; |
|---|
| 583 |
} else goto colorize; |
|---|
| 584 |
case THETA_X: |
|---|
| 585 |
if( p_grad[y*i_src_visible+x] > p_grad[y*i_src_visible+x-1] |
|---|
| 586 |
&& p_grad[y*i_src_visible+x] > p_grad[y*i_src_visible+x+1] ) |
|---|
| 587 |
{ |
|---|
| 588 |
p_outpix[y*i_dst_pitch+x] = 0; |
|---|
| 589 |
break; |
|---|
| 590 |
} else goto colorize; |
|---|
| 591 |
} |
|---|
| 592 |
} |
|---|
| 593 |
else |
|---|
| 594 |
{ |
|---|
| 595 |
colorize: |
|---|
| 596 |
if( p_filter->p_sys->b_cartoon ) |
|---|
| 597 |
{ |
|---|
| 598 |
if( p_smooth[y*i_src_visible+x] > 0xa0 ) |
|---|
| 599 |
p_outpix[y*i_dst_pitch+x] = (uint8_t) |
|---|
| 600 |
0xff - ((0xff - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 601 |
else if( p_smooth[y*i_src_visible+x] > 0x70 ) |
|---|
| 602 |
p_outpix[y*i_dst_pitch+x] =(uint8_t) |
|---|
| 603 |
0xa0 - ((0xa0 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 604 |
else if( p_smooth[y*i_src_visible+x] > 0x28 ) |
|---|
| 605 |
p_outpix[y*i_dst_pitch+x] =(uint8_t) |
|---|
| 606 |
0x70 - ((0x70 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 607 |
else |
|---|
| 608 |
p_outpix[y*i_dst_pitch+x] =(uint8_t) |
|---|
| 609 |
0x28 - ((0x28 - p_inpix[y*i_src_pitch+x] )>>2); |
|---|
| 610 |
} |
|---|
| 611 |
} |
|---|
| 612 |
} |
|---|
| 613 |
} |
|---|
| 614 |
} |
|---|
| 615 |
|
|---|
| 616 |
|
|---|
| 617 |
|
|---|
| 618 |
|
|---|
| 619 |
#define p_pre_hough p_filter->p_sys->p_pre_hough |
|---|
| 620 |
static void FilterHough( filter_t *p_filter, picture_t *p_inpic, |
|---|
| 621 |
picture_t *p_outpic ) |
|---|
| 622 |
{ |
|---|
| 623 |
int x, y, i; |
|---|
| 624 |
int i_src_visible = p_inpic->p[Y_PLANE].i_visible_pitch; |
|---|
| 625 |
int i_dst_pitch = p_outpic->p[Y_PLANE].i_pitch; |
|---|
| 626 |
int i_num_lines = p_inpic->p[Y_PLANE].i_visible_lines; |
|---|
| 627 |
|
|---|
| 628 |
uint8_t *p_outpix = p_outpic->p[Y_PLANE].p_pixels; |
|---|
| 629 |
|
|---|
| 630 |
int i_diag = sqrt( i_num_lines * i_num_lines + |
|---|
| 631 |
i_src_visible * i_src_visible); |
|---|
| 632 |
int i_max, i_phi_max, i_rho, i_rho_max; |
|---|
| 633 |
int i_nb_steps = 90; |
|---|
| 634 |
double d_step = M_PI / i_nb_steps; |
|---|
| 635 |
double d_sin; |
|---|
| 636 |
double d_cos; |
|---|
| 637 |
uint32_t *p_smooth; |
|---|
| 638 |
int *p_hough = malloc( i_diag * i_nb_steps * sizeof(int) ); |
|---|
| 639 |
if( ! p_hough ) return; |
|---|
| 640 |
p_smooth = (uint32_t *)malloc( i_num_lines*i_src_visible*sizeof(uint32_t)); |
|---|
| 641 |
if( !p_smooth ) return; |
|---|
| 642 |
|
|---|
| 643 |
if( ! p_pre_hough ) |
|---|
| 644 |
{ |
|---|
| 645 |
msg_Dbg(p_filter, "Starting precalculation"); |
|---|
| 646 |
p_pre_hough = malloc( i_num_lines*i_src_visible*i_nb_steps*sizeof(int)); |
|---|
| 647 |
if( ! p_pre_hough ) return; |
|---|
| 648 |
for( i = 0 ; i < i_nb_steps ; i++) |
|---|
| 649 |
{ |
|---|
| 650 |
d_sin = sin(d_step * i); |
|---|
| 651 |
d_cos = cos(d_step * i); |
|---|
| 652 |
for( y = 0 ; y < i_num_lines ; y++ ) |
|---|
| 653 |
for( x = 0 ; x < i_src_visible ; x++ ) |
|---|
| 654 |
{ |
|---|
| 655 |
p_pre_hough[(i*i_num_lines+y)*i_src_visible + x] = |
|---|
| 656 |
ceil(x*d_sin + y*d_cos); |
|---|
| 657 |
} |
|---|
| 658 |
} |
|---|
| 659 |
msg_Dbg(p_filter, "Precalculation done"); |
|---|
| 660 |
} |
|---|
| 661 |
|
|---|
| 662 |
vlc_memset( p_hough, 0, i_diag * i_nb_steps * sizeof(int) ); |
|---|
| 663 |
|
|---|
| 664 |
vlc_memcpy( |
|---|
| 665 |
p_outpic->p[Y_PLANE].p_pixels, p_inpic->p[Y_PLANE].p_pixels, |
|---|
| 666 |
p_outpic->p[Y_PLANE].i_lines * p_outpic->p[Y_PLANE].i_pitch ); |
|---|
| 667 |
vlc_memcpy( |
|---|
| 668 |
p_outpic->p[U_PLANE].p_pixels, p_inpic->p[U_PLANE].p_pixels, |
|---|
| 669 |
p_outpic->p[U_PLANE].i_lines * p_outpic->p[U_PLANE].i_pitch ); |
|---|
| 670 |
vlc_memcpy( |
|---|
| 671 |
p_outpic->p[V_PLANE].p_pixels, p_inpic->p[V_PLANE].p_pixels, |
|---|
| 672 |
p_outpic->p[V_PLANE].i_lines * p_outpic->p[V_PLANE].i_pitch ); |
|---|
| 673 |
|
|---|
| 674 |
GaussianConvolution( p_inpic, p_smooth ); |
|---|
| 675 |
|
|---|
| 676 |
|
|---|
| 677 |
|
|---|
| 678 |
|
|---|
| 679 |
|
|---|
| 680 |
|
|---|
| 681 |
|
|---|
| 682 |
i_max = 0; |
|---|
| 683 |
i_rho_max = 0; |
|---|
| 684 |
i_phi_max = 0; |
|---|
| 685 |
for( y = 4; y < i_num_lines - 4; y++ ) |
|---|
| 686 |
{ |
|---|
| 687 |
for( x = 4; x < i_src_visible - 4; x++ ) |
|---|
| 688 |
{ |
|---|
| 689 |
uint32_t a = |
|---|
| 690 |
( |
|---|
| 691 |
abs( |
|---|
| 692 |
( ( p_smooth[(y-1)*i_src_visible+x] |
|---|
| 693 |
- p_smooth[(y+1)*i_src_visible+x] ) <<1 ) |
|---|
| 694 |
+ ( p_smooth[(y-1)*i_src_visible+x-1] |
|---|
| 695 |
- p_smooth[(y+1)*i_src_visible+x-1] ) |
|---|
| 696 |
+ ( p_smooth[(y-1)*i_src_visible+x+1] |
|---|
| 697 |
- p_smooth[(y+1)*i_src_visible+x+1] ) |
|---|
| 698 |
) |
|---|
| 699 |
+ |
|---|
| 700 |
abs( |
|---|
| 701 |
( ( p_smooth[y*i_src_visible+x-1] |
|---|
| 702 |
- p_smooth[y*i_src_visible+x+1] ) <<1 ) |
|---|
| 703 |
+ ( p_smooth[(y-1)*i_src_visible+x-1] |
|---|
| 704 |
- p_smooth[(y-1)*i_src_visible+x+1] ) |
|---|
| 705 |
+ ( p_smooth[(y+1)*i_src_visible+x-1] |
|---|
| 706 |
- p_smooth[(y+1)*i_src_visible+x+1] ) |
|---|
| 707 |
) |
|---|
| 708 |
); |
|---|
| 709 |
if( a>>8 ) |
|---|
| 710 |
{ |
|---|
| 711 |
for( i = 0 ; i < i_nb_steps ; i ++ ) |
|---|
| 712 |
{ |
|---|
| 713 |
i_rho = p_pre_hough[(i*i_num_lines+y)*i_src_visible + x]; |
|---|
| 714 |
if( p_hough[i_rho + i_diag/2 + i * i_diag]++ > i_max ) |
|---|
| 715 |
{ |
|---|
| 716 |
i_max = p_hough[i_rho + i_diag/2 + i * i_diag]; |
|---|
| 717 |
i_rho_max = i_rho; |
|---|
| 718 |
i_phi_max = i; |
|---|
| 719 |
} |
|---|
| 720 |
} |
|---|
| 721 |
} |
|---|
| 722 |
} |
|---|
| 723 |
} |
|---|
| 724 |
|
|---|
| 725 |
d_sin = sin(i_phi_max*d_step); |
|---|
| 726 |
d_cos = cos(i_phi_max*d_step); |
|---|
| 727 |
if( d_cos != 0 ) |
|---|
| 728 |
{ |
|---|
| 729 |
for( x = 0 ; x < i_src_visible ; x++ ) |
|---|
| 730 |
{ |
|---|
| 731 |
y = (i_rho_max - x * d_sin) / d_cos; |
|---|
| 732 |
if( y >= 0 && y < i_num_lines ) |
|---|
| 733 |
p_outpix[y*i_dst_pitch+x] = 255; |
|---|
| 734 |
} |
|---|
| 735 |
} |
|---|
| 736 |
|
|---|
| 737 |
free( p_hough ); |
|---|
| 738 |
free( p_smooth ); |
|---|
| 739 |
} |
|---|
| 740 |
#undef p_pre_hough |
|---|
| 741 |
|
|---|
| 742 |
|
|---|
| 743 |
static int GradientCallback( vlc_object_t *p_this, char const *psz_var, |
|---|
| 744 |
vlc_value_t oldval, vlc_value_t newval, |
|---|
| 745 |
void *p_data ) |
|---|
| 746 |
{ |
|---|
| 747 |
VLC_UNUSED(oldval); |
|---|
| 748 |
filter_sys_t *p_sys = (filter_sys_t *)p_data; |
|---|
| 749 |
if( !strcmp( psz_var, FILTER_PREFIX "mode" ) ) |
|---|
| 750 |
{ |
|---|
| 751 |
if( !strcmp( newval.psz_string, "gradient" ) ) |
|---|
| 752 |
{ |
|---|
| 753 |
p_sys->i_mode = GRADIENT; |
|---|
| 754 |
} |
|---|
| 755 |
else if( !strcmp( newval.psz_string, "edge" ) ) |
|---|
| 756 |
{ |
|---|
| 757 |
p_sys->i_mode = EDGE; |
|---|
| 758 |
} |
|---|
| 759 |
else if( !strcmp( newval.psz_string, "hough" ) ) |
|---|
| 760 |
{ |
|---|
| 761 |
p_sys->i_mode = HOUGH; |
|---|
| 762 |
} |
|---|
| 763 |
else |
|---|
| 764 |
{ |
|---|
| 765 |
msg_Err( p_this, "no valid gradient mode provided (%s)", newval.psz_string ); |
|---|
| 766 |
p_sys->i_mode = GRADIENT; |
|---|
| 767 |
} |
|---|
| 768 |
} |
|---|
| 769 |
else if( !strcmp( psz_var, FILTER_PREFIX "type" ) ) |
|---|
| 770 |
{ |
|---|
| 771 |
p_sys->i_gradient_type = newval.i_int; |
|---|
| 772 |
} |
|---|
| 773 |
else if( !strcmp( psz_var, FILTER_PREFIX "cartoon" ) ) |
|---|
| 774 |
{ |
|---|
| 775 |
p_sys->b_cartoon = newval.b_bool; |
|---|
| 776 |
} |
|---|
| 777 |
return VLC_SUCCESS; |
|---|
| 778 |
} |
|---|