video::avcodec_encode_session_t Class Reference

FFmpeg AVCodec encode session and parameter-set rewriting state. More...

Inheritance diagram for video::avcodec_encode_session_t:

Collaboration diagram for video::avcodec_encode_session_t:

Public Member Functions
	avcodec_encode_session_t (avcodec_ctx_t &&avcodec_ctx, std::unique_ptr< platf::avcodec_encode_device_t > encode_device, int inject)
	Initialize an FFmpeg encode session and its hardware encode device.
	avcodec_encode_session_t (avcodec_encode_session_t &&other) noexcept=default
	Move an FFmpeg encode session without duplicating codec/device ownership.
int	convert (platf::img_t &img) override
	Encode one frame with FFmpeg AVCodec and prepare packet replacements.
void	invalidate_ref_frames (int64_t first_frame, int64_t last_frame) override
	Mark the frame range whose references must be invalidated.
avcodec_encode_session_t &	operator= (avcodec_encode_session_t &&other)
	Assign state from another instance while preserving ownership semantics.
void	request_idr_frame () override
	Mark the frame as a request for an IDR frame.
void	request_normal_frame () override
	Mark the frame as a request for a normal inter frame.
Public Member Functions inherited from video::encode_session_t

Public Attributes
avcodec_ctx_t	avcodec_ctx
	FFmpeg codec context owned by the encode session.
std::unique_ptr< platf::avcodec_encode_device_t >	device
	Platform device used by the FFmpeg hardware encoder.
int	inject
	Number of upcoming IDR frames that should receive rewritten parameter sets.
std::vector< packet_raw_t::replace_t >	replacements
	NAL-unit byte ranges that must be replaced before packet send.
cbs::nal_t	sps
	Original and rewritten sequence parameter set for IDR injection.
cbs::nal_t	vps
	Original and rewritten HEVC video parameter set for IDR injection.

Detailed Description

FFmpeg AVCodec encode session and parameter-set rewriting state.

Constructor & Destructor Documentation

avcodec_encode_session_t() [1/2]

video::avcodec_encode_session_t::avcodec_encode_session_t ( avcodec_ctx_t && avcodec_ctx, std::unique_ptr< platf::avcodec_encode_device_t > encode_device, int inject )

inline

Initialize an FFmpeg encode session and its hardware encode device.

Parameters

avcodec_ctx	Open FFmpeg codec context for the selected encoder.
encode_device	Platform encode device that supplies frames to FFmpeg.
inject	Whether SPS/VPS replacement data should be injected.

avcodec_encode_session_t() [2/2]

video::avcodec_encode_session_t::avcodec_encode_session_t ( avcodec_encode_session_t && other )

defaultnoexcept

Move an FFmpeg encode session without duplicating codec/device ownership.

Parameters

other

Source object whose state is copied or moved into this object.

Member Function Documentation

convert()

int video::avcodec_encode_session_t::convert ( platf::img_t & img )

inlineoverridevirtual

Encode one frame with FFmpeg AVCodec and prepare packet replacements.

Parameters

img	Image or frame object to read from or populate.

Returns

Conversion status.

Implements video::encode_session_t.

invalidate_ref_frames()

void video::avcodec_encode_session_t::invalidate_ref_frames ( int64_t first_frame, int64_t last_frame )

inlineoverridevirtual

Mark the frame range whose references must be invalidated.

Parameters

first_frame	First frame.
last_frame	Last frame.

Implements video::encode_session_t.

operator=()

avcodec_encode_session_t & video::avcodec_encode_session_t::operator= ( avcodec_encode_session_t && other )

inline

Assign state from another instance while preserving ownership semantics.

Parameters

other

Source object whose state is copied or moved into this object.

Returns

Reference or value produced by the operator.

request_idr_frame()

void video::avcodec_encode_session_t::request_idr_frame ( )

inlineoverridevirtual

Mark the frame as a request for an IDR frame.

Implements video::encode_session_t.

request_normal_frame()

void video::avcodec_encode_session_t::request_normal_frame ( )

inlineoverridevirtual

Mark the frame as a request for a normal inter frame.

Implements video::encode_session_t.

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

• src/video.cpp