videoCalculateDisplayRatio

Given the Pixel Aspect Ratio and size of an input video frame, and the pixel aspect ratio of the intended display device, calculates the actual display ratio the video will be rendered with.

bool

(

out uint darN

out uint darD

uint videoWidth

uint videoHeight

uint videoParN

uint videoParD

uint displayParN

uint displayParD

)

Parameters

darN uint: Numerator of the calculated display_ratio
darD uint: Denominator of the calculated display_ratio
videoWidth uint: Width of the video frame in pixels
videoHeight uint: Height of the video frame in pixels
videoParN uint: Numerator of the pixel aspect ratio of the input video.
videoParD uint: Denominator of the pixel aspect ratio of the input video.
displayParN uint: Numerator of the pixel aspect ratio of the display device
displayParD uint: Denominator of the pixel aspect ratio of the display device

Return Value

Type: bool

A boolean indicating success and a calculated Display Ratio in the dar_n and dar_d parameters. The return value is FALSE in the case of integer overflow or other error.

gstvideo global functions