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Commit 62c57101 authored by Laurent Aimar's avatar Laurent Aimar
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Fixed motiondetect segfaults.

parent a4270c7d
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Showing with 187 additions and 294 deletions
modules/video_filter/motiondetect.c
View file @ 62c57101
......@@ -38,23 +38,11 @@
#include "filter_picture.h"
/*****************************************************************************
* Local prototypes
* Module descriptor
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static picture_t *Filter( filter_t *, picture_t * );
static picture_t *FilterPacked( filter_t *, picture_t * );
static void GaussianConvolution( uint32_t *, uint32_t *, int, int, int );
static int FindShapes( uint32_t *, uint32_t *, int, int, int,
int *, int *, int *, int *, int *);
#define NUM_COLORS 5000
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FILTER_PREFIX "motiondetect-"
vlc_module_begin();
......@@ -68,14 +56,32 @@ vlc_module_begin();
set_callbacks( Create, Destroy );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static picture_t *Filter( filter_t *, picture_t * );
static picture_t *FilterPacked( filter_t *, picture_t * );
static void GaussianConvolution( uint32_t *, uint32_t *, int, int, int );
static int FindShapes( uint32_t *, uint32_t *, int, int, int,
int *, int *, int *, int *, int *);
static void Draw( filter_t *p_filter, uint8_t *p_pix, int i_pix_pitch, int i_pix_size );
#define NUM_COLORS (5000)
struct filter_sys_t
{
uint8_t *p_oldpix;
uint8_t *p_oldpix_u;
uint8_t *p_oldpix_v;
bool b_old;
picture_t *p_old;
uint32_t *p_buf;
uint32_t *p_buf2;
vlc_mutex_t lock;
/* */
int i_colors;
int colors[NUM_COLORS];
int color_x_min[NUM_COLORS];
int color_x_max[NUM_COLORS];
int color_y_min[NUM_COLORS];
int color_y_max[NUM_COLORS];
};
/*****************************************************************************
......@@ -84,8 +90,10 @@ struct filter_sys_t
static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
const video_format_t *p_fmt = &p_filter->fmt_in.video;
filter_sys_t *p_sys;
switch( p_filter->fmt_in.video.i_chroma )
switch( p_fmt->i_chroma )
{
CASE_PLANAR_YUV
p_filter->pf_video_filter = Filter;
......@@ -97,19 +105,29 @@ static int Create( vlc_object_t *p_this )
default:
msg_Err( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_filter->fmt_in.video.i_chroma) );
(char*)&(p_fmt->i_chroma) );
return VLC_EGENERIC;
}
/* Allocate structure */
p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
p_filter->p_sys = p_sys = malloc( sizeof( filter_sys_t ) );
if( p_filter->p_sys == NULL )
return VLC_ENOMEM;
p_filter->p_sys->p_oldpix = NULL;
p_filter->p_sys->p_buf = NULL;
p_sys->b_old = false;
p_sys->p_old = picture_New( p_fmt->i_chroma,
p_fmt->i_width, p_fmt->i_height, 0 );
p_sys->p_buf = calloc( p_fmt->i_width * p_fmt->i_height, sizeof(*p_sys->p_buf) );
p_sys->p_buf2 = calloc( p_fmt->i_width * p_fmt->i_height, sizeof(*p_sys->p_buf) );
vlc_mutex_init( &p_filter->p_sys->lock );
if( !p_sys->p_old || !p_sys->p_buf || !p_sys->p_buf2 )
{
free( p_sys->p_buf2 );
free( p_sys->p_buf );
if( p_sys->p_old )
picture_Release( p_sys->p_old );
return VLC_ENOMEM;
}
return VLC_SUCCESS;
}
......@@ -120,13 +138,12 @@ static int Create( vlc_object_t *p_this )
static void Destroy( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
free( p_filter->p_sys->p_oldpix );
free( p_filter->p_sys->p_buf );
vlc_mutex_destroy( &p_filter->p_sys->lock );
free( p_filter->p_sys );
free( p_sys->p_buf2 );
free( p_sys->p_buf );
picture_Release( p_sys->p_old );
free( p_sys );
}
......@@ -135,49 +152,30 @@ static void Destroy( vlc_object_t *p_this )
*****************************************************************************/
static picture_t *Filter( filter_t *p_filter, picture_t *p_inpic )
{
picture_t *p_outpic;
filter_sys_t *p_sys = p_filter->p_sys;
const video_format_t *p_fmt = &p_filter->fmt_in.video;
picture_t *p_outpic;
const uint8_t *p_inpix = p_inpic->p[Y_PLANE].p_pixels;
const int i_src_pitch = p_inpic->p[Y_PLANE].i_pitch;
const int i_src_visible = p_inpic->p[Y_PLANE].i_visible_pitch;
const int i_num_lines = p_inpic->p[Y_PLANE].i_visible_lines;
const uint8_t *p_inpix_u = p_inpic->p[U_PLANE].p_pixels;
const uint8_t *p_inpix_v = p_inpic->p[V_PLANE].p_pixels;
const int i_src_pitch_u = p_inpic->p[U_PLANE].i_pitch;
const int i_num_lines_u = p_inpic->p[U_PLANE].i_visible_lines;
uint8_t *p_oldpix = p_sys->p_old->p[Y_PLANE].p_pixels;
const int i_old_pitch = p_sys->p_old->p[Y_PLANE].i_pitch;
uint32_t *p_buf = p_sys->p_buf;
uint32_t *p_buf2= p_sys->p_buf2;
uint8_t *p_oldpix;
uint8_t *p_oldpix_u;
uint8_t *p_oldpix_v;
uint32_t *p_buf;
uint32_t *p_buf2;
int i,j;
int last;
unsigned x, y;
if( !p_inpic ) return NULL;
if( !p_inpic )
return NULL;
if( !p_sys->p_oldpix || !p_sys->p_buf )
if( !p_sys->b_old )
{
free( p_sys->p_oldpix );
free( p_sys->p_buf );
p_sys->p_oldpix = malloc( i_src_pitch * i_num_lines );
p_sys->p_oldpix_u = malloc( i_src_pitch_u * i_num_lines_u );
p_sys->p_oldpix_v = malloc( i_src_pitch_u * i_num_lines_u );
p_sys->p_buf = malloc( sizeof( uint32_t ) * i_src_pitch * i_num_lines );
p_sys->p_buf2 = malloc( sizeof( uint32_t ) * i_src_pitch * i_num_lines);
vlc_memcpy( p_sys->p_oldpix, p_inpix, i_src_pitch * i_num_lines );
vlc_memcpy( p_sys->p_oldpix_u, p_inpix_u, i_src_pitch_u * i_num_lines_u );
vlc_memcpy( p_sys->p_oldpix_v, p_inpix_v, i_src_pitch_u * i_num_lines_u );
picture_Copy( p_sys->p_old, p_inpic );
p_sys->b_old = true;
return p_inpic;
}
p_oldpix = p_sys->p_oldpix;
p_oldpix_u = p_sys->p_oldpix_u;
p_oldpix_v = p_sys->p_oldpix_v;
p_buf = p_sys->p_buf;
p_buf2 = p_sys->p_buf2;
p_outpic = filter_NewPicture( p_filter );
if( !p_outpic )
......@@ -185,84 +183,66 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_inpic )
picture_Release( p_inpic );
return NULL;
}
vout_CopyPicture( p_filter, p_outpic, p_inpic );
vlc_mutex_lock( &p_filter->p_sys->lock );
picture_Copy( p_outpic, p_inpic );
/**
* Substract Y planes
*/
for( i = 0; i < i_src_pitch * i_num_lines; i++ )
for( y = 0; y < p_fmt->i_height; y++ )
{
if( p_inpix[i] > p_oldpix[i] )
{
p_buf2[i] = p_inpix[i] - p_oldpix[i];
}
else
{
p_buf2[i] = p_oldpix[i] - p_inpix[i];
}
for( x = 0; x < p_fmt->i_width; x++ )
p_buf2[y*p_fmt->i_width+x] = abs( p_inpix[y*i_src_pitch+x] - p_oldpix[y*i_old_pitch+x] );
}
int line;
int col;
int format;
int i_chroma_dx;
int i_chroma_dy;
switch( p_inpic->format.i_chroma )
{
case VLC_FOURCC('I','4','2','0'):
case VLC_FOURCC('I','Y','U','V'):
case VLC_FOURCC('J','4','2','0'):
case VLC_FOURCC('Y','V','1','2'):
format = 1;
i_chroma_dx = 2;
i_chroma_dy = 2;
break;
case VLC_FOURCC('I','4','2','2'):
case VLC_FOURCC('J','4','2','2'):
format = 2;
i_chroma_dx = 2;
i_chroma_dy = 1;
break;
default:
format = 0;
msg_Warn( p_filter, "Not taking chroma into account" );
i_chroma_dx = 0;
i_chroma_dy = 0;
break;
}
if( format )
if( i_chroma_dx != 0 && i_chroma_dy != 0 )
{
for( line = 0; line < i_num_lines_u; line++ )
const uint8_t *p_inpix_u = p_inpic->p[U_PLANE].p_pixels;
const uint8_t *p_inpix_v = p_inpic->p[V_PLANE].p_pixels;
const int i_src_pitch_u = p_inpic->p[U_PLANE].i_pitch;
const int i_src_pitch_v = p_inpic->p[V_PLANE].i_pitch;
const uint8_t *p_oldpix_u = p_sys->p_old->p[U_PLANE].p_pixels;
const uint8_t *p_oldpix_v = p_sys->p_old->p[V_PLANE].p_pixels;
const int i_old_pitch_u = p_sys->p_old->p[U_PLANE].i_pitch;
const int i_old_pitch_v = p_sys->p_old->p[V_PLANE].i_pitch;
for( y = 0; y < p_fmt->i_height/i_chroma_dy; y++ )
{
for( col = 0; col < i_src_pitch_u; col ++ )
for( x = 0; x < p_fmt->i_width/i_chroma_dx; x ++ )
{
int diff;
i = line * i_src_pitch_u + col;
if( p_inpix_u[i] > p_oldpix_u[i] )
{
diff = p_inpix_u[i] - p_oldpix_u[i];
}
else
{
diff = p_oldpix_u[i] - p_inpix_u[i];
}
if( p_inpix_v[i] > p_oldpix_v[i] )
{
diff += p_inpix_v[i] - p_oldpix_v[i];
}
else
{
diff += p_oldpix_v[i] - p_inpix_v[i];
}
switch( format )
const int d = abs( p_inpix_u[y*i_src_pitch_u+x] - p_oldpix_u[y*i_old_pitch_u+x] ) +
abs( p_inpix_v[y*i_src_pitch_v+x] - p_oldpix_v[y*i_old_pitch_v+x] );
int i, j;
for( j = 0; j < i_chroma_dy; j++ )
{
case 1:
p_buf2[2*line*i_src_pitch+2*col] += diff;
p_buf2[2*line*i_src_pitch+2*col+1] += diff;
p_buf2[(2*line+1)*i_src_pitch+2*col] += diff;
p_buf2[(2*line+1)*i_src_pitch+2*col+1] += diff;
break;
case 2:
p_buf2[line*i_src_pitch+2*col] += diff;
p_buf2[line*i_src_pitch+2*col+1] += diff;
break;
for( i = 0; i < i_chroma_dx; i++ )
p_buf2[i_chroma_dy*p_fmt->i_width*j + i_chroma_dx*i] = d;
}
}
}
......@@ -271,64 +251,23 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_inpic )
/**
* Get the areas where movement was detected
*/
int colors[NUM_COLORS];
int color_x_min[NUM_COLORS];
int color_x_max[NUM_COLORS];
int color_y_min[NUM_COLORS];
int color_y_max[NUM_COLORS];
last = FindShapes( p_buf2, p_buf, i_src_pitch, i_src_visible, i_num_lines,
colors, color_x_min, color_x_max, color_y_min, color_y_max );
p_sys->i_colors = FindShapes( p_buf2, p_buf, p_fmt->i_width, p_fmt->i_width, p_fmt->i_height,
p_sys->colors, p_sys->color_x_min, p_sys->color_x_max, p_sys->color_y_min, p_sys->color_y_max );
/**
* Count final number of shapes
* Draw rectangles (there can be more than 1 moving shape in 1 rectangle)
*/
uint8_t *p_outpix = p_outpic->p[Y_PLANE].p_pixels;
const int i_dst_pitch = p_outpic->p[Y_PLANE].i_pitch;
j = 0;
for( i = 1; i < last; i++ )
{
if( colors[i] == i && color_x_min[i] != -1 )
{
if( ( color_y_max[i] - color_y_min[i] ) * ( color_x_max[i] - color_x_min[i] ) < 16 )
continue;
j++;
int x, y;
y = color_y_min[i];
for( x = color_x_min[i]; x <= color_x_max[i]; x++ )
{
p_outpix[y*i_dst_pitch+x] = 0xff;
}
y = color_y_max[i];
for( x = color_x_min[i]; x <= color_x_max[i]; x++ )
{
p_outpix[y*i_dst_pitch+x] = 0xff;
}
x = color_x_min[i];
for( y = color_y_min[i]; y <= color_y_max[i]; y++ )
{
p_outpix[y*i_dst_pitch+x] = 0xff;
}
x = color_x_max[i];
for( y = color_y_min[i]; y <= color_y_max[i]; y++ )
{
p_outpix[y*i_dst_pitch+x] = 0xff;
}
}
}
msg_Dbg( p_filter, "Counted %d moving shapes.", j);
Draw( p_filter, p_outpic->p[Y_PLANE].p_pixels, p_outpic->p[Y_PLANE].i_pitch, 1 );
/**
* We're done. Lets keep a copy of the picture
*/
vlc_memcpy( p_oldpix, p_inpix, i_src_pitch * i_num_lines );
vlc_memcpy( p_oldpix_u, p_inpix_u, i_src_pitch_u * i_num_lines_u );
vlc_memcpy( p_oldpix_v, p_inpix_v, i_src_pitch_u * i_num_lines_u );
* TODO we may just picture_Release with a latency of 1 if the filters/vout
* handle it correctly */
picture_Copy( p_sys->p_old, p_inpic );
vlc_mutex_unlock( &p_filter->p_sys->lock );
return CopyInfoAndRelease( p_outpic, p_inpic );
picture_Release( p_inpic );
return p_outpic;
}
/*****************************************************************************
......@@ -336,56 +275,34 @@ static picture_t *Filter( filter_t *p_filter, picture_t *p_inpic )
*****************************************************************************/
static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_inpic )
{
picture_t *p_outpic;
filter_sys_t *p_sys = p_filter->p_sys;
const video_format_t *p_fmt = &p_filter->fmt_in.video;
picture_t *p_outpic;
int i_y_offset, i_u_offset, i_v_offset;
const uint8_t *p_inpix;
const uint8_t *p_inpix_u;
const uint8_t *p_inpix_v;
int i_src_pitch;
int i_src_visible;
int i_num_lines;
const uint8_t *p_inpix = p_inpic->p[Y_PLANE].p_pixels;
const int i_src_pitch = p_inpic->p[Y_PLANE].i_pitch;
uint8_t *p_oldpix;
uint8_t *p_oldpix_u;
uint8_t *p_oldpix_v;
uint8_t *p_outpix;
uint8_t *p_oldpix = p_sys->p_old->p[Y_PLANE].p_pixels;
const int i_old_pitch = p_sys->p_old->p[Y_PLANE].i_pitch;
uint32_t *p_buf = p_sys->p_buf;
uint32_t *p_buf2= p_sys->p_buf2;
uint32_t *p_buf;
uint32_t *p_buf2;
int i_y_offset, i_u_offset, i_v_offset;
int i,j;
int last;
unsigned x, y;
if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
&i_u_offset, &i_v_offset ) != VLC_SUCCESS )
if( GetPackedYuvOffsets( p_fmt->i_chroma,
&i_y_offset, &i_u_offset, &i_v_offset ) )
{
msg_Warn( p_filter, "Unsupported input chroma (%4s)",
(char*)&(p_inpic->format.i_chroma) );
picture_Release( p_inpic );
return NULL;
(char*)&p_fmt->i_chroma );
return p_inpic;
}
p_inpix = p_inpic->p->p_pixels+i_y_offset;
p_inpix_u = p_inpic->p->p_pixels+i_u_offset;
p_inpix_v = p_inpic->p->p_pixels+i_v_offset;
i_src_pitch = p_inpic->p->i_pitch;
i_src_visible = p_inpic->p->i_visible_pitch;
i_num_lines = p_inpic->p->i_visible_lines;
if( !p_sys->p_oldpix || !p_sys->p_buf )
if( !p_sys->b_old )
{
free( p_sys->p_oldpix );
free( p_sys->p_buf );
p_sys->p_oldpix = malloc( i_src_pitch * i_num_lines );
p_sys->p_buf = malloc( sizeof( uint32_t ) * i_src_pitch * i_num_lines / 2 );
p_sys->p_buf2 = malloc( sizeof( uint32_t ) * i_src_pitch * i_num_lines / 2 );
vlc_memcpy( p_sys->p_oldpix, p_inpic->p->p_pixels,
i_src_pitch * i_num_lines );
picture_Copy( p_sys->p_old, p_inpic );
p_sys->b_old = true;
return p_inpic;
}
......@@ -395,121 +312,50 @@ static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_inpic )
picture_Release( p_inpic );
return NULL;
}
picture_Copy( p_outpic, p_inpic );
p_outpix = p_outpic->p->p_pixels+i_y_offset;
vlc_memcpy( p_outpic->p->p_pixels, p_inpic->p->p_pixels,
p_inpic->p->i_pitch * p_inpic->p->i_visible_lines );
p_oldpix = p_sys->p_oldpix+i_y_offset;
p_oldpix_u = p_sys->p_oldpix+i_u_offset;
p_oldpix_v = p_sys->p_oldpix+i_v_offset;
p_buf = p_sys->p_buf;
p_buf2 = p_sys->p_buf2;
/* Substract all planes at once */
vlc_mutex_lock( &p_filter->p_sys->lock );
/**
* Substract Y planes
*/
for( i = 0; i < i_src_pitch * i_num_lines; i+=2 )
for( y = 0; y < p_fmt->i_height; y++ )
{
if( p_inpix[i] > p_oldpix[i] )
for( x = 0; x < p_fmt->i_width; x+=2 )
{
p_buf2[i>>1] = p_inpix[i] - p_oldpix[i];
}
else
{
p_buf2[i>>1] = p_oldpix[i] - p_inpix[i];
}
}
int i;
int d;
#if 0
for( i = 0; i < i_src_pitch * i_num_lines; i+=4 )
{
int diff;
if( p_inpix_u[i] > p_oldpix_u[i] )
{
diff = p_inpix_u[i] - p_oldpix_u[i];
}
else
{
diff = p_oldpix_u[i] - p_inpix_u[i];
}
if( p_inpix_v[i] > p_oldpix_v[i] )
{
diff += p_inpix_v[i] - p_oldpix_v[i];
}
else
{
diff += p_oldpix_v[i] - p_inpix_v[i];
}
d = abs( p_inpix[y*i_src_pitch+2*x+i_u_offset] - p_oldpix[y*i_old_pitch+2*x+i_u_offset] ) +
abs( p_inpix[y*i_src_pitch+2*x+i_v_offset] - p_oldpix[y*i_old_pitch+2*x+i_v_offset] );
p_buf2[(i>>2)<<1] += diff;
p_buf2[((i>>2)<<1)+1] += diff;
for( i = 0; i < 2; i++ )
p_buf2[y*p_fmt->i_width+x+i] =
abs( p_inpix[y*i_src_pitch+2*(x+i)+i_y_offset] - p_oldpix[y*i_old_pitch+2*(x+i)+i_y_offset] ) + d;
}
}
#endif
/**
* Get the areas where movement was detected
*/
int colors[5000];
int color_x_min[5000];
int color_x_max[5000];
int color_y_min[5000];
int color_y_max[5000];
last = FindShapes( p_buf2, p_buf, i_src_pitch/2, i_src_visible/2,
i_num_lines, colors, color_x_min, color_x_max,
color_y_min, color_y_max );
p_sys->i_colors = FindShapes( p_buf2, p_buf, p_fmt->i_width, p_fmt->i_width, p_fmt->i_height,
p_sys->colors, p_sys->color_x_min, p_sys->color_x_max, p_sys->color_y_min, p_sys->color_y_max );
/**
* Count final number of shapes
* Draw rectangles (there can be more than 1 moving shape in 1 rectangle)
*/
j = 0;
for( i = 1; i < last; i++ )
{
if( colors[i] == i && color_x_min[i] != -1 )
{
if( ( color_y_max[i] - color_y_min[i] ) * ( color_x_max[i] - color_x_min[i] ) < 16 ) continue;
j++;
printf("Shape: (%d,%d) (%d,%d)\n", color_y_max[i], color_y_min[i], color_x_max[i], color_x_min[i] );
int x, y;
y = color_y_min[i];
for( x = color_x_min[i]*2; x <= color_x_max[i]*2; x+=2 )
{
p_outpix[y*i_src_pitch+x] = 0xff;
}
y = color_y_max[i];
for( x = color_x_min[i]*2; x <= color_x_max[i]*2; x+=2 )
{
p_outpix[y*i_src_pitch+x] = 0xff;
}
x = color_x_min[i]*2;
for( y = color_y_min[i]; y <= color_y_max[i]; y++ )
{
p_outpix[y*i_src_pitch+x] = 0xff;
}
x = color_x_max[i]*2;
for( y = color_y_min[i]; y <= color_y_max[i]; y++ )
{
p_outpix[y*i_src_pitch+x] = 0xff;
}
}
}
msg_Dbg( p_filter, "Counted %d moving shapes.", j);
Draw( p_filter, &p_outpic->p[Y_PLANE].p_pixels[i_y_offset], p_outpic->p[Y_PLANE].i_pitch, 2 );
/**
* We're done. Lets keep a copy of the picture
*/
vlc_memcpy( p_sys->p_oldpix, p_inpic->p->p_pixels, i_src_pitch * i_num_lines );
vlc_mutex_unlock( &p_filter->p_sys->lock );
* TODO we may just picture_Release with a latency of 1 if the filters/vout
* handle it correctly */
picture_Copy( p_sys->p_old, p_inpic );
return CopyInfoAndRelease( p_outpic, p_inpic );
picture_Release( p_inpic );
return p_outpic;
}
/*****************************************************************************
* Gaussian Convolution
*****************************************************************************
......@@ -526,6 +372,10 @@ static void GaussianConvolution( uint32_t *p_inpix, uint32_t *p_smooth,
int i_src_visible )
{
int x,y;
/* A bit overkill but ... simpler */
memset( p_smooth, 0, sizeof(*p_smooth) * i_src_pitch * i_num_lines );
for( y = 2; y < i_num_lines - 2; y++ )
{
for( x = 2; x < i_src_visible - 2; x++ )
......@@ -581,7 +431,7 @@ static int FindShapes( uint32_t *p_diff, uint32_t *p_smooth,
/**
* Apply some smoothing to remove noise
*/
GaussianConvolution( p_diff, p_smooth, i_pitch, i_visible, i_lines );
GaussianConvolution( p_diff, p_smooth, i_pitch, i_lines, i_visible );
/**
* Label the shapes and build the labels dependencies list
......@@ -608,7 +458,7 @@ static int FindShapes( uint32_t *p_diff, uint32_t *p_smooth,
p_smooth[i*i_pitch+j] = p_smooth[i*i_pitch+j-1];
else
{
if( last < 5000 )
if( last < NUM_COLORS )
{
p_smooth[i*i_pitch+j] = last;
colors[last] = last;
......@@ -705,3 +555,46 @@ static int FindShapes( uint32_t *p_diff, uint32_t *p_smooth,
return last;
}
static void Draw( filter_t *p_filter, uint8_t *p_pix, int i_pix_pitch, int i_pix_size )
{
filter_sys_t *p_sys = p_filter->p_sys;
int i, j;
for( i = 1, j = 0; i < p_sys->i_colors; i++ )
{
int x, y;
if( p_sys->colors[i] != i )
continue;
const int color_x_min = p_sys->color_x_min[i];
const int color_x_max = p_sys->color_x_max[i];
const int color_y_min = p_sys->color_y_min[i];
const int color_y_max = p_sys->color_y_max[i];
if( color_x_min == -1 )
continue;
if( ( color_y_max - color_y_min ) * ( color_x_max - color_x_min ) < 16 )
continue;
j++;
y = color_y_min;
for( x = color_x_min; x <= color_x_max; x++ )
p_pix[y*i_pix_pitch+x*i_pix_size] = 0xff;
y = color_y_max;
for( x = color_x_min; x <= color_x_max; x++ )
p_pix[y*i_pix_pitch+x*i_pix_size] = 0xff;
x = color_x_min;
for( y = color_y_min; y <= color_y_max; y++ )
p_pix[y*i_pix_pitch+x*i_pix_size] = 0xff;
x = color_x_max;
for( y = color_y_min; y <= color_y_max; y++ )
p_pix[y*i_pix_pitch+x*i_pix_size] = 0xff;
}
msg_Dbg( p_filter, "Counted %d moving shapes.", j );
}
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