#include <avcodec.h>
Data Fields | |
| void * | priv_data |
| struct AVCodecParser * | parser |
| 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. | |
| 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 | |
| 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. | |
| int64_t | convergence_duration |
| Time difference in stream time base units from the pts of this packet to the point at which the output from the decoder has converged independent from the availability of previous frames. | |
| int | dts_sync_point |
| Synchronization point for start of timestamp generation. | |
| int | dts_ref_dts_delta |
| Offset of the current timestamp against last timestamp sync point in units of AVCodecContext.time_base. | |
| int | pts_dts_delta |
| Presentation delay of current frame in units of AVCodecContext.time_base. | |
| int64_t | cur_frame_pos [AV_PARSER_PTS_NB] |
| Position of the packet in file. | |
| int64_t | pos |
| Byte position of currently parsed frame in stream. | |
| int64_t | last_pos |
| Previous frame byte position. | |
| int | duration |
| Duration of the current frame. | |
Definition at line 3963 of file avcodec.h.
Time difference in stream time base units from the pts of this packet to the point at which the output from the decoder has converged independent from the availability of previous frames.
That is, the frames are virtually identical no matter if decoding started from the very first frame or from this keyframe. Is AV_NOPTS_VALUE if unknown. This field is not the display duration of the current frame. This field has no meaning if the packet does not have AV_PKT_FLAG_KEY set.
The purpose of this field is to allow seeking in streams that have no keyframes in the conventional sense. It corresponds to the recovery point SEI in H.264 and match_time_delta in NUT. It is also essential for some types of subtitle streams to ensure that all subtitles are correctly displayed after seeking.
Definition at line 4031 of file avcodec.h.
Referenced by av_parser_init(), and compute_pkt_fields().
| int64_t AVCodecParserContext::cur_frame_dts[AV_PARSER_PTS_NB] |
Definition at line 3994 of file avcodec.h.
Referenced by av_parser_parse2(), and ff_fetch_timestamp().
| int64_t AVCodecParserContext::cur_frame_end[AV_PARSER_PTS_NB] |
Definition at line 4004 of file avcodec.h.
Referenced by av_parser_parse2(), and ff_fetch_timestamp().
| int64_t AVCodecParserContext::cur_frame_offset[AV_PARSER_PTS_NB] |
Definition at line 3992 of file avcodec.h.
Referenced by av_parser_parse2(), and ff_fetch_timestamp().
| 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 4079 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 3993 of file avcodec.h.
Referenced by av_parser_parse2(), dvbsub_parse(), and ff_fetch_timestamp().
| int64_t AVCodecParserContext::cur_offset |
Definition at line 3967 of file avcodec.h.
Referenced by av_parser_parse2(), and ff_fetch_timestamp().
| int64_t AVCodecParserContext::dts |
Definition at line 3983 of file avcodec.h.
Referenced by av_mpeg4_decode_header(), av_parser_parse2(), dirac_combine_frame(), ff_fetch_timestamp(), and parse_packet().
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 4058 of file avcodec.h.
Referenced by av_parser_init(), compute_pkt_fields(), and h264_parse().
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 4043 of file avcodec.h.
Referenced by av_parser_init(), compute_pkt_fields(), and h264_parse().
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 4096 of file avcodec.h.
Referenced by adx_parse(), cook_parse(), dca_parse(), ff_aac_ac3_parse(), flac_parse(), get_best_header(), gsm_parse(), mlp_parse(), mpegaudio_parse(), and parse_packet().
Definition at line 3988 of file avcodec.h.
Referenced by av_parser_init(), av_parser_parse2(), and dvbsub_parse().
Definition at line 3996 of file avcodec.h.
Referenced by av_mpeg4_decode_header(), av_parser_parse2(), avformat_find_stream_info(), cavsvideo_parse(), check_format(), dca_parse(), dirac_parse(), dnxhd_parse(), flac_parse(), h261_parse(), h263_parse(), h264_parse(), init(), jpeg_parse(), latm_parse(), mpeg4video_parse(), mpegvideo_parse(), parse_packet(), read_frame_internal(), and vc1_parse().
Definition at line 3966 of file avcodec.h.
Referenced by av_parser_parse2(), ff_fetch_timestamp(), and parse_packet().
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 4012 of file avcodec.h.
Referenced by av_parser_init(), parse_nal_units(), and parse_packet().
| int64_t AVCodecParserContext::last_dts |
Definition at line 3987 of file avcodec.h.
Referenced by av_parser_parse2(), and dirac_combine_frame().
| int64_t AVCodecParserContext::last_pos |
Previous frame byte position.
Definition at line 4089 of file avcodec.h.
Referenced by av_parser_parse2().
| int64_t AVCodecParserContext::last_pts |
Definition at line 3986 of file avcodec.h.
Referenced by av_parser_parse2(), dirac_combine_frame(), and dvbsub_parse().
Definition at line 3969 of file avcodec.h.
Referenced by av_parser_parse2(), and ff_fetch_timestamp().
| int64_t AVCodecParserContext::offset |
byte offset from starting packet start
Definition at line 4003 of file avcodec.h.
Referenced by compute_pkt_fields(), and ff_fetch_timestamp().
struct AVCodecParser* AVCodecParserContext::parser [read] |
Definition at line 3965 of file avcodec.h.
Referenced by av_parser_change(), av_parser_close(), av_parser_init(), av_parser_parse2(), avformat_find_stream_info(), and remove_extradata().
Definition at line 3971 of file avcodec.h.
Referenced by av_parser_init(), bmp_parse(), compute_pkt_fields(), dirac_combine_frame(), mpegvideo_extract_headers(), mpegvideo_parse(), mpegvideo_parse_init(), parse(), parse_nal_units(), parse_packet(), png_parse(), rv34_parse(), and vc1_extract_headers().
| int64_t AVCodecParserContext::pos |
Byte position of currently parsed frame in stream.
Definition at line 4084 of file avcodec.h.
Referenced by av_parser_parse2(), ff_fetch_timestamp(), and parse_packet().
Definition at line 3964 of file avcodec.h.
Referenced by aac_parse_init(), ac3_parse_init(), adx_parse(), av_mpeg4_decode_header(), av_parser_close(), av_parser_init(), bmp_parse(), cavsvideo_parse(), check_format(), close(), cook_parse(), dca_parse(), dca_parse_init(), decode(), dirac_combine_frame(), dirac_parse(), dirac_parse_close(), dnxhd_parse(), dvbsub_parse(), dvbsub_parse_close(), dvbsub_parse_init(), dvdsub_parse(), dvdsub_parse_close(), ff_aac_ac3_parse(), ff_parse_close(), flac_parse(), flac_parse_close(), flac_parse_init(), gsm_parse(), h261_parse(), h263_parse(), h264_parse(), init(), jpeg_parse(), latm_find_frame_end(), latm_parse(), mlp_parse(), mpeg4video_parse(), mpeg4video_parse_init(), mpegaudio_parse(), mpegvideo_extract_headers(), mpegvideo_parse(), parse_nal_units(), png_parse(), pnm_parse(), rv34_parse(), vc1_extract_headers(), vc1_parse(), and vc1_parse_init().
| int64_t AVCodecParserContext::pts |
Definition at line 3982 of file avcodec.h.
Referenced by av_mpeg4_decode_header(), av_parser_parse2(), dirac_combine_frame(), dvbsub_parse(), ff_fetch_timestamp(), parse_packet(), and rv34_parse().
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 4072 of file avcodec.h.
Referenced by av_parser_init(), compute_pkt_fields(), and h264_parse().
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 3981 of file avcodec.h.
Referenced by compute_frame_duration(), mpegvideo_extract_headers(), mpegvideo_parse(), output_packet(), parse_nal_units(), and vc1_extract_headers().
1.5.8