twa2835.h File Reference

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Data Structures
struct	twa2835_status
	This structure holds the status for a video input channel. More...
struct	twa2835_motion_substatus
	Event status for each for each channel from one A/B mux. More...
struct	twa2835_motion_status
	Event status for all the TWA2835 inputs. More...
struct	twa2835_pixel
	Pixel to be displayed on the monitor/record path oof the TWA2835. More...
Defines
#define	_TWA2835_H_   1
Functions
int	twa2835_read_reg (void *twa, int addr)
	reads the value of a TWA2835 register
void	twa2835_write_reg (void *twa, int addr, int data)
	writes to a TWA2835 register
int	twa2835_batch (void *twa, int *batch)
	executes a batch of operations to the TWA2835
void	twa2835_reset (void *twa)
	resets the TWA2835
unsigned long	twa2835_get_sec (void)
	returns the number of second elapsed from an arbitrary moment in time
int	twa2835_wait_motion (void *twa, int sec, int *nv, int *md, int *bd, int *nd)
	waits for an event generated by the TWA2835
int	twa2835_init (void *twa, int isNtsc)
	initialize the hardware associated with the given instance
int	twa2835_release (void *twa)
	releases a TWA2835 instance
int	twa2835_output_mode (void *twa, int tv_x_rec, int tv_x_ovl, int tv_y_rec, int tv_y_ovl, int enc_rec, int enc_ovl)
	setup video output mode
int	twa2835_set_palette (void *twa, int ind, int R, int G, int B)
	set the RGB valuess for an entry in the palette
int	twa2835_mon_full (void *twa, int ch)
	display a channel full-screen on the monitor path
int	twa2835_mon_quad (void *twa)
	display all the 4 channels in the monitor path
int	twa2835_mon_freeze_ch (void *twa, int ch)
	freezes a channel on the monitor path
int	twa2835_mon_continue_ch (void *twa, int ch)
	puts a channel in continuos mode on the monitor path
int	twa2835_mon_strobe_ch (void *twa, int ch)
	updates a channel when freezed on the monitor path
int	twa2835_mon_switch_mode_ch (void *twa, int ch)
	puts channel in switched mode on the monitor path
int	twa2835_mon_switch_trigger (void *twa, int ch)
	changes a channel in switched mode to the given channel on the monitor path
int	twa2835_mon_freeze (void *twa)
	freezes the monitor path
int	twa2835_mon_continue (void *twa)
	puts the monitor path in continuos mode
int	twa2835_mon_pb_enable (void *twa, int ch, int ena)
	enables/disables playback on a channel
int	twa2835_mon_show_motion_box (void *twa, int box, int enable, int ab, int ch)
	shows where a motion has been detected by coloring user boxes
int	twa2835_mon_write_bitmap (void *twa, int x, int y, int w, int h, int pn, struct twa2835_pixel *p)
	displays a bitmap on the monitor path
int	twa2835_mon_bitmap_enable (void *twa, int ena, int pn)
	enable display of bitmap on monitor path
int	twa2835_mon_pb_id (void *twa, int auto_vb_detect_ena, int vbi_ena, int vbi_code_ena, int vbi_ric_ena)
	enables gathering playback information from ebedded channel id
int	twa2835_mon_pb_crop (void *twa, int ch, int ena)
	crops playback area so embedded channel id information are not visible
int	twa2835_mon_ch_attr (void *twa, int ch, int blank, int hmirror, int vmirror, int blink)
	sets the attribute for a channel on the monitor path
int	twa2835_mon_blink_on_loss (void *twa, int ena)
	enables blinking of channel boundary if video-loss
int	twa2835_mon_zoom (void *twa, int ena, int x, int y)
	enables 2x zoom on the monitor path
int	twa2835_mon_filter (void *twa, int mode, int slope, int thr)
	sets the parameter of the anti-nois filter on the monitor path
int	twa2835_mon_cursor (void *twa, int large, int filled, int blink, int x, int y)
	shows the cursor on the monitor path
int	twa2835_rec_full (void *twa, int ch)
	a channel full-screen on the record path
int	twa2835_rec_quad (void *twa)
	display all the 4 channels in the record path
int	twa2835_rec_write_bitmap (void *twa, int x, int y, int w, int h, struct twa2835_pixel *p)
	displays a bitmap on the record path
int	twa2835_rec_bitmap_enable (void *twa, int ena)
	enable display of bitmap on the record path
int	twa2835_rec_id_enable (void *twa, int vis_ena, int vis_auto_ena, int vis_auto_rpt_ena, int vis_det_ena, int vis_user_ena, int vis_code_ena, int vis_ric_ena)
	enable the outputing of channel id information on the record path
int	twa2835_rec_ch_attr (void *twa, int ch, int blank, int hmirror, int vmirror, int blink)
	sets the attribute for a channel on the record path
int	twa2835_rec_mode (void *twa, int frame, int dvr)
	sets the recording mode
int	twa2835_rec_freeze_ch (void *twa, int ch)
	freezes a channel on the record path
int	twa2835_rec_continue_ch (void *twa, int ch)
	puts a channel in continuos mode on the record path
int	twa2835_rec_strobe_ch (void *twa, int ch)
	updates a channel when freezed on the record path
int	twa2835_rec_switch_mode (void *twa, int ch, int period, int ch_len, int *ch_list)
	puts channel in switched mode on the record path
int	twa2835_rec_switch_trigger (void *twa, int ch)
	changes a channel in switched mode to the given channel on the record path
int	twa2835_rec_freeze (void *twa)
	freezes the record path
int	twa2835_rec_continue (void *twa)
	puts the record path in continuos mode
int	twa2835_brightness (void *twa, int ch, int v)
	adjust brightness on given input channel
int	twa2835_contrast (void *twa, int ch, int v)
	adjust contrast on given input channel
int	twa2835_hue (void *twa, int ch, int v)
	adjust hue on given input channel
int	twa2835_saturation (void *twa, int ch, int v)
	adjust saturation on given input channel
int	twa2835_get_status (void *twa, int ch, struct twa2835_status *s)
	returns status for an input channel
int	twa2835_ch_ab (void *twa, int ch, int ab)
	switches between A and B input for each channel
int	twa2835_get_motion_status (void *twa, struct twa2835_motion_status *s)
	returns the motion detection engine status
int	twa2835_enairq (void *twa, int nv, int md, int bd, int nd)
	sets which events will trigger an interrupt from the TWA2835
int	twa2835_get_irq_status (void *twa, int *nv, int *md, int *bd, int *nd)
	returns the status of various detection events that may have triggered an interrupt
int	twa2835_set_motion_par (void *twa, int ch, int disable, int md_reffld, int bd_celsens, int bd_lvsens, int nd_lvsens, int nd_tmpsens, int md_fld, int md_align, int md_celsens, int md_dual_ena, int md_lvsens, int md_speed, int md_tmpsens, int md_spsens, int *md_mask)
	sets the motion detection parameters
int	twa2835_audio_passtru (void *twa, int *in_gain, int *mute, int out_gain)
	sets the audio part in simple pass through mode

---

Define Documentation

#define _TWA2835_H_   1

Definition at line 10 of file twa2835.h.

---

Function Documentation

int twa2835_audio_passtru	(	void *	twa,
		int *	in_gain,
		int *	mute,
		int	out_gain
	)

sets the audio part in simple pass through mode

Parameters:

	twa	pointer to the TWA2835 instance
	in_gain	gain for 4 input channel (0-15)
	mute	can mute each of the input channel if 1
	out_gain	output gain (0-15)

Returns:

0 on success, otherwise non-zero

int twa2835_batch	(	void *	twa,
		int *	batch
	)

executes a batch of operations to the TWA2835

Parameters:

	twa	pointer to the TWA2835 instance
	batch	batch to execute

int twa2835_brightness	(	void *	twa,
		int	ch,
		int	v
	)

adjust brightness on given input channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	v	parameter value (0-255)

Returns:

0 on success, otherwise non-zero

int twa2835_ch_ab	(	void *	twa,
		int	ch,
		int	ab
	)

switches between A and B input for each channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	ab	if zero selects A input, if 1 B

Returns:

0 on success, otherwise non-zero

int twa2835_contrast	(	void *	twa,
		int	ch,
		int	v
	)

adjust contrast on given input channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	v	parameter value (0-255)

Returns:

0 on success, otherwise non-zero

int twa2835_enairq	(	void *	twa,
		int	nv,
		int	md,
		int	bd,
		int	nd
	)

sets which events will trigger an interrupt from the TWA2835

Parameters:

	twa	pointer to the TWA2835 instance
	nv	sets which channels will triegger a video loss event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	md	sets which channels will triegger a motion detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	bd	sets which channels will triegger a blind detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	nd	Sets which channels will triegger a night detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B

Returns:

0 on success, otherwise non-zero

int twa2835_get_irq_status	(	void *	twa,
		int *	nv,
		int *	md,
		int *	bd,
		int *	nd
	)

returns the status of various detection events that may have triggered an interrupt

Parameters:

	twa	pointer to the TWA2835 instance
	nv	returns which channels triggered a video loss event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	md	returns which channels trieggered a motion detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	bd	returns which channels trieggered a blind detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	nd	returns which channels trieggered a night detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B

Returns:

0 on success, otherwise non-zero

int twa2835_get_motion_status	(	void *	twa,
		struct twa2835_motion_status *	s
	)

returns the motion detection engine status

Parameters:

	twa	pointer to the TWA2835 instance
	s	outputs the status of various modules in the motion detection engine

Returns:

0 on success, otherwise non-zero

unsigned long twa2835_get_sec

(

void

)

returns the number of second elapsed from an arbitrary moment in time

Returns:

the number of second elapsed from an arbitrary moment in time

int twa2835_get_status	(	void *	twa,
		int	ch,
		struct twa2835_status *	s
	)

returns status for an input channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	s	struc sescribing status of given input channel

Returns:

0 on success, otherwise non-zero

int twa2835_hue	(	void *	twa,
		int	ch,
		int	v
	)

adjust hue on given input channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	v	parameter value (0-255)

Returns:

0 on success, otherwise non-zero

int twa2835_init	(	void *	twa,
		int	isNtsc
	)

initialize the hardware associated with the given instance

Parameters:

	twa	pointer to the TWA2835 instance
	isNtsc	non-zero to set NTSC mode

Returns:

0 on success, otherwise non-zero

int twa2835_mon_bitmap_enable	(	void *	twa,
		int	ena,
		int	pn
	)

enable display of bitmap on monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ena	if non-zero do enable
	pn	video page to use (0-5)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_blink_on_loss	(	void *	twa,
		int	ena
	)

enables blinking of channel boundary if video-loss

Parameters:

	twa	pointer to the TWA2835 instance
	ena	enable function if non-zero

Returns:

0 on success, otherwise non-zero

int twa2835_mon_ch_attr	(	void *	twa,
		int	ch,
		int	blank,
		int	hmirror,
		int	vmirror,
		int	blink
	)

sets the attribute for a channel on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	blank	blanks channel if non-zero
	hmirror	horizontal mirroring of channel if non-zero
	vmirror	vertical mirroring of channel if non-zero
	blink	blinks channel boundary channel if non-zero

Returns:

0 on success, otherwise non-zero

int twa2835_mon_continue

(

void *

twa

)

puts the monitor path in continuos mode

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_mon_continue_ch	(	void *	twa,
		int	ch
	)

puts a channel in continuos mode on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_cursor	(	void *	twa,
		int	large,
		int	filled,
		int	blink,
		int	x,
		int	y
	)

shows the cursor on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	large	non-zero for large cursor
	filled	non-zero for filled cursor
	blink	non-zero for blinking cursor
	x	x coordintate, if -1 turns off the cursor
	y	y coordintate, if -1 turns off the cursor

Returns:

0 on success, otherwise non-zero

int twa2835_mon_filter	(	void *	twa,
		int	mode,
		int	slope,
		int	thr
	)

sets the parameter of the anti-nois filter on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	mode	adaptive (0) or median (1) mode
	slope	gradient of filter (0-3)
	thr	threshold of filter (0-31)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_freeze

(

void *

twa

)

freezes the monitor path

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_mon_freeze_ch	(	void *	twa,
		int	ch
	)

freezes a channel on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_full	(	void *	twa,
		int	ch
	)

display a channel full-screen on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_pb_crop	(	void *	twa,
		int	ch,
		int	ena
	)

crops playback area so embedded channel id information are not visible

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	ena	if non-zero do enable

Returns:

0 on success, otherwise non-zero

int twa2835_mon_pb_enable	(	void *	twa,
		int	ch,
		int	ena
	)

enables/disables playback on a channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	ena	non-zero to enable

Returns:

0 on success, otherwise non-zero

int twa2835_mon_pb_id	(	void *	twa,
		int	auto_vb_detect_ena,
		int	vbi_ena,
		int	vbi_code_ena,
		int	vbi_ric_ena
	)

enables gathering playback information from ebedded channel id

Parameters:

	twa	pointer to the TWA2835 instance
	auto_vb_detect_ena	enable channel id auto detection
	vbi_ena	enable analog chanel id
	vbi_code_ena	enable digital channel id
	vbi_ric_ena	enable run-time clock from channel id

Returns:

0 on success, otherwise non-zero

int twa2835_mon_quad

(

void *

twa

)

display all the 4 channels in the monitor path

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_mon_show_motion_box	(	void *	twa,
		int	box,
		int	enable,
		int	ab,
		int	ch
	)

shows where a motion has been detected by coloring user boxes

Parameters:

	twa	pointer to the TWA2835 instance
	box	user box to use
	enable	non-zero to enable
	ab	input to use from AB shitch (0=A, 1=B)
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_strobe_ch	(	void *	twa,
		int	ch
	)

updates a channel when freezed on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_switch_mode_ch	(	void *	twa,
		int	ch
	)

puts channel in switched mode on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_switch_trigger	(	void *	twa,
		int	ch
	)

changes a channel in switched mode to the given channel on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_write_bitmap	(	void *	twa,
		int	x,
		int	y,
		int	w,
		int	h,
		int	pn,
		struct twa2835_pixel *	p
	)

displays a bitmap on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	x	x coordinate (0-712) multiple of 8
	y	y coordinate (0-232/280) multiple of 8
	w	image width (8-720) multiple of 8
	h	image height (0-240/288) multiple of 8
	pn	which video page to write (0-5)
	p	bitmap bits (w*h pixels)

Returns:

0 on success, otherwise non-zero

int twa2835_mon_zoom	(	void *	twa,
		int	ena,
		int	x,
		int	y
	)

enables 2x zoom on the monitor path

Parameters:

	twa	pointer to the TWA2835 instance
	ena	enable function if non-zero
	x	x coordinate of the top-left corner of zoom region
	y	y coordinate of the top-left corner of zoom region

Returns:

0 on success, otherwise non-zero

int twa2835_output_mode	(	void *	twa,
		int	tv_x_rec,
		int	tv_x_ovl,
		int	tv_y_rec,
		int	tv_y_ovl,
		int	enc_rec,
		int	enc_ovl
	)

setup video output mode

Parameters:

	twa	pointer to the TWA2835 instance
	tv_x_rec	enables if non-zero record path (instead of monitor) on analog X output
	tv_x_ovl	enables graphic overlay on analog X output
	tv_y_rec	enables if non-zero record path (instead of monitor) on analog Y output
	tv_y_ovl	enables graphic overlay on analog Y output
	enc_rec	enables if non-zero record path (instead of monitor) on digital (ADV212 connected) output
	enc_ovl	enables graphic overlay on digital (ADV212 connected) output

Returns:

0 on success, otherwise non-zero

int twa2835_read_reg	(	void *	twa,
		int	addr
	)

reads the value of a TWA2835 register

Parameters:

	twa	pointer to the TWA2835 instance
	addr	address of register to read

Returns:

value read from register

int twa2835_rec_bitmap_enable	(	void *	twa,
		int	ena
	)

enable display of bitmap on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ena	if non-zero do enable

Returns:

0 on success, otherwise non-zero

int twa2835_rec_ch_attr	(	void *	twa,
		int	ch,
		int	blank,
		int	hmirror,
		int	vmirror,
		int	blink
	)

sets the attribute for a channel on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	blank	blanks channel if non-zero
	hmirror	horizontal mirroring of channel if non-zero
	vmirror	vertical mirroring of channel if non-zero
	blink	blinks channel boundary channel if non-zero

Returns:

0 on success, otherwise non-zero

int twa2835_rec_continue

(

void *

twa

)

puts the record path in continuos mode

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_rec_continue_ch	(	void *	twa,
		int	ch
	)

puts a channel in continuos mode on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_rec_freeze

(

void *

twa

)

freezes the record path

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_rec_freeze_ch	(	void *	twa,
		int	ch
	)

freezes a channel on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_rec_full	(	void *	twa,
		int	ch
	)

a channel full-screen on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_rec_id_enable	(	void *	twa,
		int	vis_ena,
		int	vis_auto_ena,
		int	vis_auto_rpt_ena,
		int	vis_det_ena,
		int	vis_user_ena,
		int	vis_code_ena,
		int	vis_ric_ena
	)

enable the outputing of channel id information on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	vis_ena	analog channel id
	vis_auto_ena	automatic channel id
	vis_auto_rpt_ena	channel id repetition
	vis_det_ena	detection channel id
	vis_user_ena	user channel id
	vis_code_ena	digital channel id
	vis_ric_ena	run-time clock

Returns:

0 on success, otherwise non-zero

int twa2835_rec_mode	(	void *	twa,
		int	frame,
		int	dvr
	)

sets the recording mode

Parameters:

	twa	pointer to the TWA2835 instance
	frame	if non-zero enables frame mode
	dvr	if non-zero enables DVR mode

Returns:

0 on success, otherwise non-zero

int twa2835_rec_quad

(

void *

twa

)

display all the 4 channels in the record path

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

int twa2835_rec_strobe_ch	(	void *	twa,
		int	ch
	)

updates a channel when freezed on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_rec_switch_mode	(	void *	twa,
		int	ch,
		int	period,
		int	ch_len,
		int *	ch_list
	)

puts channel in switched mode on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	period	(in number of fields) to wait befor hopping to the next channel
	ch_len	lenght of the list of channel to be switched
	ch_list	array with channel number to be displayed in sequence

Returns:

0 on success, otherwise non-zero

int twa2835_rec_switch_trigger	(	void *	twa,
		int	ch
	)

changes a channel in switched mode to the given channel on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)

Returns:

0 on success, otherwise non-zero

int twa2835_rec_write_bitmap	(	void *	twa,
		int	x,
		int	y,
		int	w,
		int	h,
		struct twa2835_pixel *	p
	)

displays a bitmap on the record path

Parameters:

	twa	pointer to the TWA2835 instance
	x	x coordinate (0-712) multiple of 8
	y	y coordinate (0-232/280) multiple of 8
	w	image width (8-720) multiple of 8
	h	image height (0-240/288) multiple of 8
	p	bitmap bits (w*h pixels)

Returns:

0 on success, otherwise non-zero

int twa2835_release

(

void *

twa

)

releases a TWA2835 instance

Parameters:

twa

pointer to the TWA2835 instance

Returns:

0 on success, otherwise non-zero

void twa2835_reset

(

void *

twa

)

resets the TWA2835

Parameters:

twa

pointer to the TWA2835 instance

int twa2835_saturation	(	void *	twa,
		int	ch,
		int	v
	)

adjust saturation on given input channel

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	v	parameter value (0-255)

Returns:

0 on success, otherwise non-zero

int twa2835_set_motion_par	(	void *	twa,
		int	ch,
		int	disable,
		int	md_reffld,
		int	bd_celsens,
		int	bd_lvsens,
		int	nd_lvsens,
		int	nd_tmpsens,
		int	md_fld,
		int	md_align,
		int	md_celsens,
		int	md_dual_ena,
		int	md_lvsens,
		int	md_speed,
		int	md_tmpsens,
		int	md_spsens,
		int *	md_mask
	)

sets the motion detection parameters

Parameters:

	twa	pointer to the TWA2835 instance
	ch	channel number (0-3)
	disable	if 1 disables channel
	md_reffld	controls the updating time of reference field for motion detection (0 every frame, 1 according to md_speed)
	bd_celsens	the threshold of cell for blind detection (0-3)
	bd_lvsens	the threshold of level for blind detection (0-15)
	nd_lvsens	the threshold of level for night detection (0-15)
	nd_tmpsens	the threshold of temporal sensitivity for night detection (0-15)
	md_fld	0 = odd field, 1 = even field 2 = any 3 = both
	md_align	horizontal starting position for motion detection (0-15)
	md_celsens	the threshold of sub-cell number for motion detection (0-3)
	md_dual_ena	if 1 enable the non-realtime motion detection mode (8 channel mode)
	md_lvsens	the level sensitivity of motion detector (0-31)
	md_speed	velocity of motion detector (0-63)
	md_tmpsens	temporal sensitivity of motion detecto (0-15)
	md_spsens	spatial sensitivity of motion detecto (0-15)
	md_mask	an array of 12 ints. Every int rapresents a row. Every bit in an int corresponds to a cell. If bit is one that cell is ignored for motion detection.

Returns:

0 on success, otherwise non-zero

int twa2835_set_palette	(	void *	twa,
		int	ind,
		int	R,
		int	G,
		int	B
	)

set the RGB valuess for an entry in the palette

Parameters:

	twa	pointer to the TWA2835 instance
	ind	palette index
	R	red value (0-255)
	G	green value (0-255)
	B	blue value (0-255)

Returns:

0 on success, otherwise non-zero

int twa2835_wait_motion	(	void *	twa,
		int	sec,
		int *	nv,
		int *	md,
		int *	bd,
		int *	nd
	)

waits for an event generated by the TWA2835

Parameters:

	twa	pointer to the TWA2835 instance
	sec	number of seconds to wait before returning even if no events
	nv	returns the status of no-video event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	md	returns the status of motion detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	bd	returns the status of blind detection event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B
	nd	returns the status of night detect event. Bits 0-3 are channels 0-3 on mux A, bits 4-7 are channels 4-7 on mux B

Returns:

0 on success, otherwise non-zero

void twa2835_write_reg	(	void *	twa,
		int	addr,
		int	data
	)

writes to a TWA2835 register

Parameters:

	twa	pointer to the TWA2835 instance
	addr	address of register to write
	data	value to write

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