AetherPrismCore / API reference / Probing and input
Enumeration
HardwareDecodeSupport
enum HardwareDecodeSupportDeclared in Sources/PrismCore/Probe/HardwareDecodeSupport.swift · PrismCore 3.5.4
What this device can decode in hardware.
One codec needs this today, and needs it as a correctness question rather than a performance one: AV1. Apple's hardware AV1 decoder arrived with the A17 Pro and the M3, and there is no software AV1 decoder in VideoToolbox behind it — Safari plays AV1 on an M1 or M2 through its own dav1d, not through the system. So on those chips (Vision Pro's M2 included) an AV1 track handed to AVPlayer doesn't play slowly, it doesn't play at all.
Which makes the gate the difference between offering AV1 on the native path and serving an unplayable stream. Asked of the device rather than inferred from a chip name: the same binary runs on an A16 and an M4, and a table of model identifiers is a table that goes stale.
Type properties
static var isAV1Supported: Bool { get }Whether this device decodes AV1 in hardware, and therefore whether AV1 can ride the remux path at all.
false is not a failure — it routes AV1 to PrismCore's own software path, which decodes it with libdav1d. That is the only way AV1 plays on an M2, and it is why the software path matters most on the platform (visionOS) that has the least of it wired up.
Generated from the public symbols of PrismCore 3.5.4. All types