AVD3D11VAFramesContext Struct Reference

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

#include <libavutil/hwcontext_d3d11va.h>

Data Fields
ID3D11Texture2D *	texture
	The canonical texture used for pool allocation. More...
UINT	BindFlags
	D3D11_TEXTURE2D_DESC.BindFlags used for texture creation. More...
UINT	MiscFlags
	D3D11_TEXTURE2D_DESC.MiscFlags used for texture creation. More...

Detailed Description

This struct is allocated as AVHWFramesContext.hwctx.

Definition at line 131 of file hwcontext_d3d11va.h.

Field Documentation

texture

ID3D11Texture2D* AVD3D11VAFramesContext::texture

The canonical texture used for pool allocation.

If this is set to NULL on init, the hwframes implementation will allocate and set an array texture if initial_pool_size > 0.

The only situation when the API user should set this is:

• the user wants to do manual pool allocation (setting AVHWFramesContext.pool), instead of letting AVHWFramesContext allocate the pool
• of an array texture
• and wants it to use it for decoding
• this has to be done before calling av_hwframe_ctx_init()

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

This is in particular used by the libavcodec D3D11VA hwaccel, which requires a single array texture. It will create ID3D11VideoDecoderOutputView objects for each array texture element on decoder initialization.

Definition at line 152 of file hwcontext_d3d11va.h.

Referenced by d3d11va_frames_init(), d3d11va_frames_uninit(), d3d11va_pool_alloc(), and opencl_mem_flags_for_mapping().

BindFlags

UINT AVD3D11VAFramesContext::BindFlags

D3D11_TEXTURE2D_DESC.BindFlags used for texture creation.

The user must at least set D3D11_BIND_DECODER if the frames context is to be used for video decoding. This field is ignored/invalid if a user-allocated texture is provided.

Definition at line 160 of file hwcontext_d3d11va.h.

Referenced by d3d11va_alloc_single(), d3d11va_frames_init(), and ff_dxva2_common_frame_params().

MiscFlags

UINT AVD3D11VAFramesContext::MiscFlags

D3D11_TEXTURE2D_DESC.MiscFlags used for texture creation.

This field is ignored/invalid if a user-allocated texture is provided.

Definition at line 166 of file hwcontext_d3d11va.h.

Referenced by d3d11va_alloc_single(), and d3d11va_frames_init().

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The documentation for this struct was generated from the following file:

• libavutil/hwcontext_d3d11va.h