FFmpeg
Functions
video_enc_params.c File Reference
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include "buffer.h"
#include "common.h"
#include "frame.h"
#include "mem.h"
#include "video_enc_params.h"

Go to the source code of this file.

Functions

AVVideoEncParamsav_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. More...
 
AVVideoEncParamsav_video_enc_params_create_side_data (AVFrame *frame, enum AVVideoEncParamsType type, unsigned int nb_blocks)
 Allocates memory for AVEncodeInfoFrame plus an array of. More...
 

Function Documentation

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

Definition at line 29 of file video_enc_params.c.

Referenced by av_video_enc_params_create_side_data().

◆ 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

as AVFrameSideData of type AV_FRAME_DATA_VIDEO_ENC_PARAMS and initializes the variables.

Definition at line 56 of file video_enc_params.c.

Referenced by ff_mpv_export_qp_table(), filter_frame(), h264_export_enc_params(), and vp9_export_enc_params().

frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264