motiondetect.c File Reference

Include dependency graph for motiondetect.c:


Data Structures
struct	filter_sys_t
	filter_sys_t: chroma method descriptor More...
Defines
#define	FILTER_PREFIX "motiondetect-"
#define	NUM_COLORS (5000)
#define	CHECK(A)
Functions
static int	Create (vlc_object_t *)
static void	Destroy (vlc_object_t *)
int	vlc_entry__main (module_t *p_module)
const char *	vlc_entry_license__main (void)
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 Documentation

#define CHECK ( A )

Value:

if( p_smooth[A] && p_smooth[A] != p_smooth[i*i_pitch+j] ) \
                { \
                    if( p_smooth[A] < p_smooth[i*i_pitch+j] ) \
                        colors[p_smooth[i*i_pitch+j]] = p_smooth[A]; \
                    else \
                        colors[p_smooth[A]] = p_smooth[i*i_pitch+j]; \
                }

Referenced by FindShapes(), and yadif_filter_line_c().

#define FILTER_PREFIX "motiondetect-"

#define NUM_COLORS (5000)

Referenced by FindShapes().

Function Documentation

static int Create ( vlc_object_t * p_this ) [static]

static void Destroy ( vlc_object_t * p_this ) [static]

References filter_sys_t::p_buf, filter_sys_t::p_buf2, filter_sys_t::p_old, filter_t::p_sys, p_sys, and picture_Release().

static void Draw	(	filter_t *	p_filter,
		uint8_t *	p_pix,
		int	i_pix_pitch,
		int	i_pix_size
	)			`[static]`

References filter_sys_t::color_x_max, filter_sys_t::color_x_min, filter_sys_t::color_y_max, filter_sys_t::color_y_min, filter_sys_t::colors, i, filter_sys_t::i_colors, msg_Dbg, filter_t::p_sys, and p_sys.

Referenced by Filter(), and FilterPacked().

static picture_t * Filter	(	filter_t *	p_filter,
		picture_t *	p_inpic
	)			`[static]`

Substract Y planes

Get the areas where movement was detected

Count final number of shapes Draw rectangles (there can be more than 1 moving shape in 1 rectangle)

We're done. Lets keep a copy of the picture TODO we may just picture_Release with a latency of 1 if the filters/vout handle it correctly

References filter_sys_t::b_old, filter_sys_t::color_x_max, filter_sys_t::color_x_min, filter_sys_t::color_y_max, filter_sys_t::color_y_min, filter_sys_t::colors, Draw(), filter_NewPicture(), FindShapes(), filter_t::fmt_in, picture_t::format, i, video_format_t::i_chroma, filter_sys_t::i_colors, video_format_t::i_height, plane_t::i_pitch, video_format_t::i_width, msg_Warn, picture_t::p, filter_sys_t::p_buf, filter_sys_t::p_buf2, filter_sys_t::p_old, plane_t::p_pixels, filter_t::p_sys, p_sys, picture_Copy(), picture_Release(), U_PLANE, V_PLANE, es_format_t::video, VLC_CODEC_I420, VLC_CODEC_I422, VLC_CODEC_J420, VLC_CODEC_J422, VLC_CODEC_YV12, and Y_PLANE.

static picture_t * FilterPacked	(	filter_t *	p_filter,
		picture_t *	p_inpic
	)			`[static]`

Get the areas where movement was detected

Count final number of shapes Draw rectangles (there can be more than 1 moving shape in 1 rectangle)

We're done. Lets keep a copy of the picture TODO we may just picture_Release with a latency of 1 if the filters/vout handle it correctly

References filter_sys_t::b_old, filter_sys_t::color_x_max, filter_sys_t::color_x_min, filter_sys_t::color_y_max, filter_sys_t::color_y_min, filter_sys_t::colors, Draw(), filter_NewPicture(), FindShapes(), filter_t::fmt_in, GetPackedYuvOffsets(), i, video_format_t::i_chroma, filter_sys_t::i_colors, video_format_t::i_height, plane_t::i_pitch, video_format_t::i_width, msg_Warn, picture_t::p, filter_sys_t::p_buf, filter_sys_t::p_buf2, filter_sys_t::p_old, plane_t::p_pixels, filter_t::p_sys, p_sys, picture_Copy(), picture_Release(), es_format_t::video, and Y_PLANE.

static int FindShapes	(	uint32_t *	p_diff,
		uint32_t *	p_smooth,
		int	i_pitch,
		int	i_visible,
		int	i_lines,
		int *	colors,
		int *	color_x_min,
		int *	color_x_max,
		int *	color_y_min,
		int *	color_y_max
	)			`[static]`

Apply some smoothing to remove noise

Label the shapes and build the labels dependencies list

Initialise empty rectangle list

Compute rectangle coordinates

Merge overlaping rectangles

References __MAX, __MIN, CHECK, GaussianConvolution(), i, and NUM_COLORS.

Referenced by Filter(), and FilterPacked().

static void GaussianConvolution	(	uint32_t *	p_inpix,
		uint32_t *	p_smooth,
		int	i_src_pitch,
		int	i_num_lines,
		int	i_src_visible
	)			`[static]`

int vlc_entry__main ( module_t * p_module )

const char* vlc_entry_license__main ( void )

motiondetect.c File Reference

Data Structures

Defines

Functions

Define Documentation

Function Documentation