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Data Fields
AVCodecParserContext Struct Reference

#include <avcodec.h>

Data Fields

voidpriv_data
 
struct AVCodecParserparser
 
int64_t frame_offset
 
int64_t cur_offset
 
int64_t next_frame_offset
 
int pict_type
 
int repeat_pict
 This field is used for proper frame duration computation in lavf. More...
 
int64_t pts
 
int64_t dts
 
int64_t last_pts
 
int64_t last_dts
 
int fetch_timestamp
 
int cur_frame_start_index
 
int64_t cur_frame_offset [AV_PARSER_PTS_NB]
 
int64_t cur_frame_pts [AV_PARSER_PTS_NB]
 
int64_t cur_frame_dts [AV_PARSER_PTS_NB]
 
int flags
 
int64_t offset
 byte offset from starting packet start More...
 
int64_t cur_frame_end [AV_PARSER_PTS_NB]
 
int key_frame
 Set by parser to 1 for key frames and 0 for non-key frames. More...
 
attribute_deprecated int64_t convergence_duration
 
int dts_sync_point
 Synchronization point for start of timestamp generation. More...
 
int dts_ref_dts_delta
 Offset of the current timestamp against last timestamp sync point in units of AVCodecContext.time_base. More...
 
int pts_dts_delta
 Presentation delay of current frame in units of AVCodecContext.time_base. More...
 
int64_t cur_frame_pos [AV_PARSER_PTS_NB]
 Position of the packet in file. More...
 
int64_t pos
 Byte position of currently parsed frame in stream. More...
 
int64_t last_pos
 Previous frame byte position. More...
 
int duration
 Duration of the current frame. More...
 
enum AVFieldOrder field_order
 
enum AVPictureStructure picture_structure
 Indicate whether a picture is coded as a frame, top field or bottom field. More...
 
int output_picture_number
 Picture number incremented in presentation or output order. More...
 
int width
 Dimensions of the decoded video intended for presentation. More...
 
int height
 
int coded_width
 Dimensions of the coded video. More...
 
int coded_height
 
int format
 The format of the coded data, corresponds to enum AVPixelFormat for video and for enum AVSampleFormat for audio. More...
 

Detailed Description

Definition at line 4940 of file avcodec.h.

Field Documentation

void* AVCodecParserContext::priv_data
struct AVCodecParser* AVCodecParserContext::parser
int64_t AVCodecParserContext::frame_offset

Definition at line 4943 of file avcodec.h.

Referenced by av_parser_parse2(), ff_fetch_timestamp(), and parse_packet().

int64_t AVCodecParserContext::cur_offset

Definition at line 4944 of file avcodec.h.

Referenced by av_parser_parse2(), and ff_fetch_timestamp().

int64_t AVCodecParserContext::next_frame_offset

Definition at line 4946 of file avcodec.h.

Referenced by av_parser_parse2(), ff_fetch_timestamp(), and flac_read_timestamp().

int AVCodecParserContext::pict_type
int AVCodecParserContext::repeat_pict

This field is used for proper frame duration computation in lavf.

It signals, how much longer the frame duration of the current frame is compared to normal frame duration.

frame_duration = (1 + repeat_pict) * time_base

It is used by codecs like H.264 to display telecined material.

Definition at line 4958 of file avcodec.h.

Referenced by avformat_find_stream_info(), mpegvideo_extract_headers(), mpegvideo_parse(), parse_nal_units(), process_input_packet(), and vc1_extract_header().

int64_t AVCodecParserContext::pts
int64_t AVCodecParserContext::dts
int64_t AVCodecParserContext::last_pts

Definition at line 4963 of file avcodec.h.

Referenced by av_parser_parse2(), dirac_combine_frame(), and dvbsub_parse().

int64_t AVCodecParserContext::last_dts

Definition at line 4964 of file avcodec.h.

Referenced by av_parser_parse2(), and dirac_combine_frame().

int AVCodecParserContext::fetch_timestamp

Definition at line 4965 of file avcodec.h.

Referenced by av_parser_init(), av_parser_parse2(), and dvbsub_parse().

int AVCodecParserContext::cur_frame_start_index

Definition at line 4968 of file avcodec.h.

Referenced by av_parser_parse2(), and dvbsub_parse().

int64_t AVCodecParserContext::cur_frame_offset[AV_PARSER_PTS_NB]

Definition at line 4969 of file avcodec.h.

Referenced by av_parser_parse2(), and ff_fetch_timestamp().

int64_t AVCodecParserContext::cur_frame_pts[AV_PARSER_PTS_NB]

Definition at line 4970 of file avcodec.h.

Referenced by av_parser_parse2(), dvbsub_parse(), and ff_fetch_timestamp().

int64_t AVCodecParserContext::cur_frame_dts[AV_PARSER_PTS_NB]

Definition at line 4971 of file avcodec.h.

Referenced by av_parser_parse2(), and ff_fetch_timestamp().

int AVCodecParserContext::flags
int64_t AVCodecParserContext::offset

byte offset from starting packet start

Definition at line 4980 of file avcodec.h.

Referenced by compute_pkt_fields(), and ff_fetch_timestamp().

int64_t AVCodecParserContext::cur_frame_end[AV_PARSER_PTS_NB]

Definition at line 4981 of file avcodec.h.

Referenced by av_parser_parse2(), and ff_fetch_timestamp().

int AVCodecParserContext::key_frame

Set by parser to 1 for key frames and 0 for non-key frames.

It is initialized to -1, so if the parser doesn't set this flag, old-style fallback using AV_PICTURE_TYPE_I picture type as key frames will be used.

Definition at line 4989 of file avcodec.h.

Referenced by av_parser_init(), parse_frame(), parse_nal_units(), parse_packet(), and tak_parse().

attribute_deprecated int64_t AVCodecParserContext::convergence_duration
Deprecated:
unused

Definition at line 4996 of file avcodec.h.

Referenced by av_parser_init(), and compute_pkt_fields().

int AVCodecParserContext::dts_sync_point

Synchronization point for start of timestamp generation.

Set to >0 for sync point, 0 for no sync point and <0 for undefined (default).

For example, this corresponds to presence of H.264 buffering period SEI message.

Definition at line 5009 of file avcodec.h.

Referenced by av_parser_init().

int AVCodecParserContext::dts_ref_dts_delta

Offset of the current timestamp against last timestamp sync point in units of AVCodecContext.time_base.

Set to INT_MIN when dts_sync_point unused. Otherwise, it must contain a valid timestamp offset.

Note that the timestamp of sync point has usually a nonzero dts_ref_dts_delta, which refers to the previous sync point. Offset of the next frame after timestamp sync point will be usually 1.

For example, this corresponds to H.264 cpb_removal_delay.

Definition at line 5024 of file avcodec.h.

Referenced by av_parser_init().

int AVCodecParserContext::pts_dts_delta

Presentation delay of current frame in units of AVCodecContext.time_base.

Set to INT_MIN when dts_sync_point unused. Otherwise, it must contain valid non-negative timestamp delta (presentation time of a frame must not lie in the past).

This delay represents the difference between decoding and presentation time of the frame.

For example, this corresponds to H.264 dpb_output_delay.

Definition at line 5038 of file avcodec.h.

Referenced by av_parser_init().

int64_t AVCodecParserContext::cur_frame_pos[AV_PARSER_PTS_NB]

Position of the packet in file.

Analogous to cur_frame_pts/dts

Definition at line 5045 of file avcodec.h.

Referenced by av_parser_parse2(), and ff_fetch_timestamp().

int64_t AVCodecParserContext::pos

Byte position of currently parsed frame in stream.

Definition at line 5050 of file avcodec.h.

Referenced by av_parser_parse2(), ff_fetch_timestamp(), and parse_packet().

int64_t AVCodecParserContext::last_pos

Previous frame byte position.

Definition at line 5055 of file avcodec.h.

Referenced by av_parser_parse2().

int AVCodecParserContext::duration

Duration of the current frame.

For audio, this is in units of 1 / AVCodecContext.sample_rate. For all other types, this is in units of AVCodecContext.time_base.

Definition at line 5062 of file avcodec.h.

Referenced by adx_parse(), cook_parse(), dca_parse(), dvaudio_parse(), dvd_nav_parse(), ff_aac_ac3_parse(), flac_parse(), g729_parse(), get_best_header(), gsm_parse(), mlp_parse(), mpegaudio_parse(), opus_find_frame_end(), parse_packet(), and tak_parse().

enum AVFieldOrder AVCodecParserContext::field_order

Definition at line 5064 of file avcodec.h.

Referenced by mpegvideo_extract_headers(), parse_nal_units(), and vc1_extract_header().

enum AVPictureStructure AVCodecParserContext::picture_structure

Indicate whether a picture is coded as a frame, top field or bottom field.

For example, H.264 field_pic_flag equal to 0 corresponds to AV_PICTURE_STRUCTURE_FRAME. An H.264 picture with field_pic_flag equal to 1 and bottom_field_flag equal to 0 corresponds to AV_PICTURE_STRUCTURE_TOP_FIELD.

Definition at line 5074 of file avcodec.h.

Referenced by parse_nal_units().

int AVCodecParserContext::output_picture_number

Picture number incremented in presentation or output order.

This field may be reinitialized at the first picture of a new sequence.

For example, this corresponds to H.264 PicOrderCnt.

Definition at line 5082 of file avcodec.h.

Referenced by parse_nal_units().

int AVCodecParserContext::width

Dimensions of the decoded video intended for presentation.

Definition at line 5087 of file avcodec.h.

Referenced by hevc_parse_slice_header(), mpegvideo_extract_headers(), and parse_nal_units().

int AVCodecParserContext::height

Definition at line 5088 of file avcodec.h.

Referenced by hevc_parse_slice_header(), mpegvideo_extract_headers(), and parse_nal_units().

int AVCodecParserContext::coded_width

Dimensions of the coded video.

Definition at line 5093 of file avcodec.h.

Referenced by hevc_parse_slice_header(), mpegvideo_extract_headers(), and parse_nal_units().

int AVCodecParserContext::coded_height

Definition at line 5094 of file avcodec.h.

Referenced by hevc_parse_slice_header(), mpegvideo_extract_headers(), and parse_nal_units().

int AVCodecParserContext::format

The format of the coded data, corresponds to enum AVPixelFormat for video and for enum AVSampleFormat for audio.

Note that a decoder can have considerable freedom in how exactly it decodes the data, so the format reported here might be different from the one returned by a decoder.

Definition at line 5104 of file avcodec.h.

Referenced by av_parser_init(), hevc_parse_slice_header(), mpegvideo_extract_headers(), and parse_nal_units().


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