This struct is allocated as AVHWDeviceContext.hwctx. More...

#include <hwcontext_d3d12va.h>

Data Fields
ID3D12Device *	device
	Device used for objects creation and access. More...

ID3D12VideoDevice *	video_device
	If unset, this will be set from the device field on init. More...

void(*	lock )(void *lock_ctx)
	Callbacks for locking. More...

void(*	unlock )(void *lock_ctx)

void *	lock_ctx

Detailed Description

This struct is allocated as AVHWDeviceContext.hwctx.

Definition at line 43 of file hwcontext_d3d12va.h.

Field Documentation

◆ device

ID3D12Device* AVD3D12VADeviceContext::device

Device used for objects creation and access.

This can also be used to set the libavcodec decoding device.

Can be set by the user. This is the only mandatory field - the other device context fields are set from this and are available for convenience.

Deallocating the AVHWDeviceContext will always release this interface, and it does not matter whether it was user-allocated.

Definition at line 54 of file hwcontext_d3d12va.h.

Referenced by d3d12va_create_helper_objects(), d3d12va_create_staging_buffer_resource(), d3d12va_frames_get_constraints(), and d3d12va_pool_alloc().

◆ video_device

ID3D12VideoDevice* AVD3D12VADeviceContext::video_device

If unset, this will be set from the device field on init.

Deallocating the AVHWDeviceContext will always release this interface, and it does not matter whether it was user-allocated.

Definition at line 62 of file hwcontext_d3d12va.h.

Referenced by d3d12va_create_decoder(), d3d12va_create_decoder_heap(), and d3d12va_device_uninit().

◆ lock

void(* AVD3D12VADeviceContext::lock) (void *lock_ctx)

Callbacks for locking.

They protect access to the internal staging texture (for av_hwframe_transfer_data() calls). They do NOT protect access to hwcontext or decoder state in general.

If unset on init, the hwcontext implementation will set them to use an internal mutex.

The underlying lock must be recursive. lock_ctx is for free use by the locking implementation.

Definition at line 75 of file hwcontext_d3d12va.h.

Referenced by d3d12va_device_uninit(), and d3d12va_transfer_data().