SDL Video Display

Display video using SDL

• Library:

• Simulink Support Package for Raspberry Pi Hardware / Audio and Video

• 

Description

The SDL Video Display block displays video data using the Simple DirectMedia Layer (SDL). This block accepts planar video data in the RGB or YCbCr 4:2:2 formats.

Note

You can use up to 20 SDL Video Display blocks in a Simulink^® model and deploy the model on a Raspberry Pi™ board.

Ports

Input

R — Red component of input video

matrix

Input port at which to specify the red component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to RGB.

Data Types: uint8

G — Green component of input video

matrix

Input port at which to specify the green component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to RGB.

Data Types: uint8

B — Blue component of input video

matrix

Input port at which to specify the blue component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to RGB.

Data Types: uint8

Y — Luminance component of input video

matrix

Input port at which to specify the luma component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to YCbCr 4:2:2.

Data Types: uint8

Cb — Blue difference component of input video

matrix

Input port at which to specify the blue difference component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to YCbCr 4:2:2.

Data Types: uint8

Cr — Red difference component of input video

matrix

Input port at which to specify the red difference component of each pixel of the input video.

Dependencies

To enable this port, set Pixel format to YCbCr 4:2:2.

Data Types: uint8

Parameters

Window title — Display name of SDL Video Display window

SDL Video Display (default) | string

Displays the window title of the SDL Video Display block.

Pixel format — Input video stream format

RGB (default) | YCbCr 4:2:2

Specify the format of the input video stream as RGB or YCbCr 4:2:2.

RGB format uses three 8-bit values to represent the red, green, and blue components of each pixel.

YCbCr 4:2:2 uses three channels to represent color image data for each pixel:

• Y is the luma component (essentially a grayscale signal).

• Cb is the blue difference chroma component.

• Cr is the red difference chroma component.

Cb and Cr are sampled at half the rate of Y. Therefore if the dimensions of Y are M*N, the dimensions of Cb and Cr are each (M/2) by N.