1363605 - [EME] Widevine should support SW_SECURE_CRYPTO video robustness

Status: RESOLVED FIXED

(Core :: Audio/Video: Playback, enhancement, P3)

Description

[Chris Pearce [:cpearce (Not reading bugmail)]]

Turns out Widevine on desktop is supposed to support "SW_SECURE_CRYPTO" robustness as well as "SW_SECURE_DECODE".

https://github.com/google/shaka-player/issues/786

Widevine's max robustness:
https://cs.chromium.org/chromium/src/chrome/renderer/media/chrome_key_systems.cc?l=223&rcl=c52544194f2bf97e72cf9215f2c3d40928929036

Where chromium checks the robustness levels:
https://cs.chromium.org/chromium/src/components/cdm/renderer/widevine_key_system_properties.cc?l=116&rcl=0dc3090c6e647245895ee6762dd6a07521382308

Comment 1

[Chris Pearce [:cpearce (Not reading bugmail)]]

Attachment: Bug 1363605 - Widevine should support SW_SECURE_CRYPTO video robustness.

Turns out that Chrome treats the robustness values as SW_SECURE_DECODE to mean
that SW_SECURE_CRYPTO is also supported. So we'd better follow suit...

Review commit: https://reviewboard.mozilla.org/r/137792/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/137792/

Comment 2

[Gerald Squelart (he/him) (not at Mozilla since 2022-09-15)]

Comment on attachment 8866177 [details]
Bug 1363605 - Widevine should support SW_SECURE_CRYPTO video robustness.

https://reviewboard.mozilla.org/r/137792/#review140940

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b68a3cc7207d
Widevine should support SW_SECURE_CRYPTO video robustness. r=gerald

Comment 4

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/b68a3cc7207d