#include <stddef.h>
#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/frame.h"

Data Structures
struct	AVVideoEncParams
	Video encoding parameters for a given frame. More...

struct	AVVideoBlockParams
	Data structure for storing block-level encoding information. More...

Enumerations
enum	AVVideoEncParamsType { AV_VIDEO_ENC_PARAMS_NONE = -1 , AV_VIDEO_ENC_PARAMS_VP9 , AV_VIDEO_ENC_PARAMS_H264 , AV_VIDEO_ENC_PARAMS_MPEG2 }

Functions
static av_always_inline AVVideoBlockParams *	av_video_enc_params_block (AVVideoEncParams *par, unsigned int idx)
	Get the block at the specified `idx`.

AVVideoEncParams *	av_video_enc_params_alloc (enum AVVideoEncParamsType type, unsigned int nb_blocks, size_t *out_size)
	Allocates memory for AVVideoEncParams of the given type, plus an array of `nb_blocks` AVVideoBlockParams and initializes the variables.

AVVideoEncParams *	av_video_enc_params_create_side_data (AVFrame *frame, enum AVVideoEncParamsType type, unsigned int nb_blocks)
	Allocates memory for AVEncodeInfoFrame plus an array of `nb_blocks` AVEncodeInfoBlock in the given AVFrame `frame` as AVFrameSideData of type AV_FRAME_DATA_VIDEO_ENC_PARAMS and initializes the variables.

Enumeration Type Documentation

◆ AVVideoEncParamsType

enum AVVideoEncParamsType

Enumerator
AV_VIDEO_ENC_PARAMS_NONE
AV_VIDEO_ENC_PARAMS_VP9	VP9 stores: per-frame base (luma AC) quantizer index, exported as AVVideoEncParams.qp deltas for luma DC, chroma AC and chroma DC, exported in the corresponding entries in AVVideoEncParams.delta_qp per-segment delta, exported as for each block as AVVideoBlockParams.delta_qp To compute the resulting quantizer index for a block: for luma AC, add the base qp and the per-block delta_qp, saturating to unsigned 8-bit. for luma DC and chroma AC/DC, add the corresponding AVVideoBlockParams.delta_qp to the luma AC index, again saturating to unsigned 8-bit.
AV_VIDEO_ENC_PARAMS_H264	H.264 stores: in PPS (per-picture): initial QP_Y (luma) value, exported as AVVideoEncParams.qp delta(s) for chroma QP values (same for both, or each separately), exported as in the corresponding entries in AVVideoEncParams.delta_qp per-slice QP delta, not exported directly, added to the per-MB value per-MB delta; not exported directly; the final per-MB quantizer parameter - QP_Y - minus the value in AVVideoEncParams.qp is exported as AVVideoBlockParams.qp_delta.
AV_VIDEO_ENC_PARAMS_MPEG2

Definition at line 28 of file video_enc_params.h.

Function Documentation

◆ av_video_enc_params_block()

static av_always_inline AVVideoBlockParams * av_video_enc_params_block	(	AVVideoEncParams *	par,
		unsigned int	idx
	)

static

Get the block at the specified idx.

Must be between 0 and nb_blocks - 1.

Definition at line 143 of file video_enc_params.h.

◆ av_video_enc_params_alloc()

AVVideoEncParams * av_video_enc_params_alloc	(	enum AVVideoEncParamsType	type,
		unsigned int	nb_blocks,
		size_t *	out_size
	)

Allocates memory for AVVideoEncParams of the given type, plus an array of nb_blocks AVVideoBlockParams and initializes the variables.

Can be freed with a normal av_free() call.

Parameters

out_size if non-NULL, the size in bytes of the resulting data array is written here.

◆ av_video_enc_params_create_side_data()

AVVideoEncParams * av_video_enc_params_create_side_data	(	AVFrame *	frame,
		enum AVVideoEncParamsType	type,
		unsigned int	nb_blocks
	)

Allocates memory for AVEncodeInfoFrame plus an array of nb_blocks AVEncodeInfoBlock in the given AVFrame frame as AVFrameSideData of type AV_FRAME_DATA_VIDEO_ENC_PARAMS and initializes the variables.

Data Structures