packet.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/buffer.h"
#include "libavutil/dict.h"
#include "libavutil/rational.h"
#include "libavcodec/version.h"

Go to the source code of this file.

Data Structures
struct	AVPacketSideData
struct	AVPacket
	This structure stores compressed data. More...

Macros
#define	AV_PKT_DATA_QUALITY_FACTOR   AV_PKT_DATA_QUALITY_STATS
#define	AV_PKT_FLAG_KEY   0x0001
	The packet contains a keyframe. More...
#define	AV_PKT_FLAG_CORRUPT   0x0002
	The packet content is corrupted. More...
#define	AV_PKT_FLAG_DISCARD   0x0004
	Flag is used to discard packets which are required to maintain valid decoder state but are not required for output and should be dropped after decoding. More...
#define	AV_PKT_FLAG_TRUSTED   0x0008
	The packet comes from a trusted source. More...
#define	AV_PKT_FLAG_DISPOSABLE   0x0010
	Flag is used to indicate packets that contain frames that can be discarded by the decoder. More...

Enumerations
enum	AVPacketSideDataType {   AV_PKT_DATA_PALETTE, AV_PKT_DATA_NEW_EXTRADATA, AV_PKT_DATA_PARAM_CHANGE, AV_PKT_DATA_H263_MB_INFO,   AV_PKT_DATA_REPLAYGAIN, AV_PKT_DATA_DISPLAYMATRIX, AV_PKT_DATA_STEREO3D, AV_PKT_DATA_AUDIO_SERVICE_TYPE,   AV_PKT_DATA_QUALITY_STATS, AV_PKT_DATA_FALLBACK_TRACK, AV_PKT_DATA_CPB_PROPERTIES, AV_PKT_DATA_SKIP_SAMPLES,   AV_PKT_DATA_JP_DUALMONO, AV_PKT_DATA_STRINGS_METADATA, AV_PKT_DATA_SUBTITLE_POSITION, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,   AV_PKT_DATA_WEBVTT_IDENTIFIER, AV_PKT_DATA_WEBVTT_SETTINGS, AV_PKT_DATA_METADATA_UPDATE, AV_PKT_DATA_MPEGTS_STREAM_ID,   AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_PKT_DATA_SPHERICAL, AV_PKT_DATA_CONTENT_LIGHT_LEVEL, AV_PKT_DATA_A53_CC,   AV_PKT_DATA_ENCRYPTION_INIT_INFO, AV_PKT_DATA_ENCRYPTION_INFO, AV_PKT_DATA_AFD, AV_PKT_DATA_PRFT,   AV_PKT_DATA_ICC_PROFILE, AV_PKT_DATA_DOVI_CONF, AV_PKT_DATA_NB }
enum	AVSideDataParamChangeFlags { AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = 0x0001, AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = 0x0002, AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = 0x0004, AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = 0x0008 }

Functions
AVPacket *	av_packet_alloc (void)
	Allocate an AVPacket and set its fields to default values. More...
AVPacket *	av_packet_clone (const AVPacket *src)
	Create a new packet that references the same data as src. More...
void	av_packet_free (AVPacket **pkt)
	Free the packet, if the packet is reference counted, it will be unreferenced first. More...
void	av_init_packet (AVPacket *pkt)
	Initialize optional fields of a packet with default values. More...
int	av_new_packet (AVPacket *pkt, int size)
	Allocate the payload of a packet and initialize its fields with default values. More...
void	av_shrink_packet (AVPacket *pkt, int size)
	Reduce packet size, correctly zeroing padding. More...
int	av_grow_packet (AVPacket *pkt, int grow_by)
	Increase packet size, correctly zeroing padding. More...
int	av_packet_from_data (AVPacket *pkt, uint8_t *data, int size)
	Initialize a reference-counted packet from av_malloc()ed data. More...
uint8_t *	av_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
	Allocate new information of a packet. More...
int	av_packet_add_side_data (AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
	Wrap an existing array as a packet side data. More...
int	av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
	Shrink the already allocated side data buffer. More...
uint8_t *	av_packet_get_side_data (const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
	Get side information from packet. More...
const char *	av_packet_side_data_name (enum AVPacketSideDataType type)
uint8_t *	av_packet_pack_dictionary (AVDictionary *dict, int *size)
	Pack a dictionary for use in side_data. More...
int	av_packet_unpack_dictionary (const uint8_t *data, int size, AVDictionary **dict)
	Unpack a dictionary from side_data. More...
void	av_packet_free_side_data (AVPacket *pkt)
	Convenience function to free all the side data stored. More...
int	av_packet_ref (AVPacket *dst, const AVPacket *src)
	Setup a new reference to the data described by a given packet. More...
void	av_packet_unref (AVPacket *pkt)
	Wipe the packet. More...
void	av_packet_move_ref (AVPacket *dst, AVPacket *src)
	Move every field in src to dst and reset src. More...
int	av_packet_copy_props (AVPacket *dst, const AVPacket *src)
	Copy only "properties" fields from src to dst. More...
int	av_packet_make_refcounted (AVPacket *pkt)
	Ensure the data described by a given packet is reference counted. More...
int	av_packet_make_writable (AVPacket *pkt)
	Create a writable reference for the data described by a given packet, avoiding data copy if possible. More...
void	av_packet_rescale_ts (AVPacket *pkt, AVRational tb_src, AVRational tb_dst)
	Convert valid timing fields (timestamps / durations) in a packet from one timebase to another. More...