v4l.h File Reference

Interface with v4l. More...

Go to the source code of this file.

Functions
void	BGRtoRGB (unsigned char *img)
	Transforms a BGR image in a RGB image.
unsigned char *	BGR640toRGB720 (unsigned char *img)
	Transforms a 640x480 BGR image in a 720x480 RGB image, putting black bands on laterals.
unsigned char *	NextFrame (void)
	Gets an image from v4l device.
int	setChannel_Mode (int channel, int mode)
	Sets channel and norm of the v4l device.
int	initialize (char *deviceName, int channelNumber, int videoMode)
	Initializes the v4l device.
void	finalize (void)
	Terminates communication with v4l device.

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Detailed Description

Interface with v4l.

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Function Documentation

unsigned char* BGR640toRGB720

(

unsigned char *

img

)

Transforms a 640x480 BGR image in a 720x480 RGB image, putting black bands on laterals.

Parameters:

img

The image to transform.

void BGRtoRGB

(

unsigned char *

img

)

Transforms a BGR image in a RGB image.

Parameters:

img

The image to transform.

void finalize

(

void

)

Terminates communication with v4l device.

int initialize	(	char *	deviceName,
		int	channelNumber,
		int	channelMode
	)

Initializes the v4l device.

Parameters:

	deviceName	The device name: "/dev/video0"
	channel	The channel number: 0=TV 1=Composite1 2=S-Video 3=Composite3
	mode	The video mode: 0=VIDEO_MODE_PAL 1=VIDEO_MODE_NTSC.

unsigned char* NextFrame

(

void

)

Gets an image from v4l device.

Returns:

unsigned char* The image

int setChannel_Mode	(	int	channel,
		int	mode
	)

Sets channel and norm of the v4l device.

Parameters:

	channel	The channel number: 0=TV 1=Composite1 2=S-Video 3=Composite3
	mode	The video mode: 0=VIDEO_MODE_PAL 1=VIDEO_MODE_NTSC.

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