Source repositoryva::va_t Class Reference

VAAPI encode device that imports captured frames into VA surfaces. More...

Inheritance diagram for va::va_t:

Collaboration diagram for va::va_t:

Public Member Functions
void	apply_colorspace () override
	Apply the configured colorspace metadata to the active frame.
VAProfile	get_va_profile (AVCodecContext *codec_ctx)
	Determines the matching VA profile for the codec configuration.
int	init (int in_width, int in_height, file_t &&render_device)
	Initialize VAAPI display, EGL, and conversion resources.
void	init_codec_options (AVCodecContext *codec_ctx, AVDictionary **options) override
	Initialize codec options.
bool	is_va_profile_supported (VAProfile profile)
	Determines if a given VA profile is supported.
VAEntrypoint	select_va_entrypoint (VAProfile profile)
	Finds a supported VA entrypoint for the given VA profile.
int	set_frame (AVFrame *new_frame, AVBufferRef *hw_frames_ctx_buf) override
	Attach frame resources used by the next conversion or encode operation.
Public Member Functions inherited from platf::avcodec_encode_device_t
int	convert (platf::img_t &img) override
	Convert a captured image into the encoder input representation.
virtual void	init_hwframes (AVHWFramesContext *frames)
	Initialize the hwframes context.
virtual int	prepare_to_derive_context (int hw_device_type)
	Prepare to derive a context.

Public Attributes
egl::ctx_t	ctx
	EGL context used for VA-API frame conversion.
egl::display_t	display
	EGL display created from the DRM render node.
file_t	file
	DRM render-node file descriptor used by VAAPI and EGL.
gbm::gbm_t	gbm
	GBM device used for buffer allocation.
int	height
	Frame or display height in pixels.
frame_t	hwframe
	FFmpeg hardware frame backed by a VAAPI surface.
egl::nv12_t	nv12
	EGL/OpenGL resources used for NV12 output frames.
egl::sws_t	sws
	EGL/OpenGL conversion pipeline for VA-API frames.
va::display_t::pointer	va_display
	VA display used to allocate and destroy surfaces.
int	width
	Frame or display width in pixels.
Public Attributes inherited from platf::avcodec_encode_device_t
ID3D11Device *	d3d11_device = nullptr
	Native D3D11 device borrowed while the encode device is alive.
AVFrame *	frame {}
	FFmpeg frame currently owned by the encode device.
bool	hardware = false
	Whether this device supplies hardware frames instead of software conversion.
init_hw_device_fn_t	init_hw_device = nullptr
	Optional backend-specific hardware device initializer.
Public Attributes inherited from platf::encode_device_t
video::sunshine_colorspace_t	colorspace
	Colorspace metadata expected by the encoder.

Additional Inherited Members
Public Types inherited from platf::avcodec_encode_device_t
using	init_hw_device_fn_t = int (*)(avcodec_encode_device_t *encode_device, AVBufferRef **hw_device_buf)
	Callback signature for backend-specific FFmpeg hardware device initialization.

Detailed Description

VAAPI encode device that imports captured frames into VA surfaces.

Member Function Documentation

apply_colorspace()

void va::va_t::apply_colorspace ( )

inlineoverridevirtual

Apply the configured colorspace metadata to the active frame.

Reimplemented from platf::avcodec_encode_device_t.

get_va_profile()

VAProfile va::va_t::get_va_profile ( AVCodecContext * codec_ctx )

inline

Determines the matching VA profile for the codec configuration.

Parameters

codec_ctx

The FFmpeg codec context.

Returns

The matching VA profile or VAProfileNone on failure.

init()

int va::va_t::init ( int in_width, int in_height, file_t && render_device )

inline

Initialize VAAPI display, EGL, and conversion resources.

Parameters

in_width	In width.
in_height	In height.
render_device	Render device.

Returns

0 on success; nonzero or negative platform status on failure.

init_codec_options()

void va::va_t::init_codec_options ( AVCodecContext * codec_ctx, AVDictionary ** options )

inlineoverridevirtual

Initialize codec options.

Parameters

codec_ctx	Native context object used by the operation or callback.
options	Request options or socket options to apply.

Reimplemented from platf::avcodec_encode_device_t.

is_va_profile_supported()

bool va::va_t::is_va_profile_supported ( VAProfile profile )

inline

Determines if a given VA profile is supported.

Parameters

profile

The profile to match.

Returns

Boolean value indicating if the profile is supported.

select_va_entrypoint()

VAEntrypoint va::va_t::select_va_entrypoint ( VAProfile profile )

inline

Finds a supported VA entrypoint for the given VA profile.

Parameters

profile

The profile to match.

Returns

A valid encoding entrypoint or 0 on failure.

set_frame()

int va::va_t::set_frame ( AVFrame * new_frame, AVBufferRef * hw_frames_ctx_buf )

inlineoverridevirtual

Attach frame resources used by the next conversion or encode operation.

Parameters

new_frame	Video or graphics frame being processed.
hw_frames_ctx_buf	Hardware frames context buffer.

Returns

Status from updating frame.

Reimplemented from platf::avcodec_encode_device_t.

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

• src/platform/linux/vaapi.cpp