1731650 - Netflix macOS fullscreen video doesn't trigger the low-power mode

Status: RESOLVED DUPLICATE of bug 1736692

(Core :: Graphics, defect, P3)

Description

[Brad Werth [:bradwerth]]

Netflix video takes a different path through WebRender compared to video from YouTube and Twitch. The GMPVideoDecoder seems to send each video frame in a way that the NativeLayerCA code can't detect as a video source, which prevents the macOS low power mode enabled in Bug 1653417 from activating.

A solution will include:

1. Ensure that NativeLayerCA::IsVideo can detect when a layer is being used to display Netflix video.
2. Get those video frames encoded in a CMSampleBuffer that will trigger the low power mode.

Comment 1

[Matt Woodrow (:mattwoodrow)]

Where does the construction of the RGB image happen?

I can't find the path where GMPVideoDecoder::Decoded leads to yuv->rgb conversion.

Comment 2

[Brad Werth [:bradwerth]]

(In reply to Matt Woodrow (:mattwoodrow) from comment #1)

Where does the construction of the RGB image happen?

I can't find the path where GMPVideoDecoder::Decoded leads to yuv->rgb conversion.

I'm probably wrong about the path taken through the code. I'll continue to investigate and see if I can figure out how the frames are delivered, and in what form.

Comment 3

[Brad Werth [:bradwerth]]

Attachment: Bug 1731650 Part 1: Make the GMP decoder provide a compositor for `CreateAndCopyData`.