Macros | Functions
avpacket.c File Reference
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.


#define ALLOC_MALLOC(data, size)   data = av_malloc(size)
#define ALLOC_BUF(data, size)
#define DUP_DATA(dst, src, size, padding, ALLOC)
#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL


void av_init_packet (AVPacket *pkt)
 Initialize optional fields of a packet with default values. More...
AVPacketav_packet_alloc (void)
 Allocate an AVPacket and set its fields to default values. More...
void av_packet_free (AVPacket **pkt)
 Free the packet, if the packet is reference counted, it will be unreferenced first. More...
static int packet_alloc (AVBufferRef **buf, int size)
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...
static int copy_packet_data (AVPacket *pkt, const AVPacket *src, int dup)
int av_copy_packet_side_data (AVPacket *pkt, const AVPacket *src)
 Copy packet side data. More...
int av_dup_packet (AVPacket *pkt)
int av_copy_packet (AVPacket *dst, const AVPacket *src)
 Copy packet, including contents. More...
FF_ENABLE_DEPRECATION_WARNINGS void av_packet_free_side_data (AVPacket *pkt)
 Convenience function to free all the side data stored. More...
FF_DISABLE_DEPRECATION_WARNINGS void av_free_packet (AVPacket *pkt)
 Free a packet. More...
FF_ENABLE_DEPRECATION_WARNINGS 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...
uint8_tav_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
 Allocate new information of a packet. More...
uint8_tav_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)
int av_packet_merge_side_data (AVPacket *pkt)
int av_packet_split_side_data (AVPacket *pkt)
uint8_tav_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...
int av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
 Shrink the already allocated side data buffer. More...
int av_packet_copy_props (AVPacket *dst, const AVPacket *src)
 Copy only "properties" fields from src to dst. More...
void av_packet_unref (AVPacket *pkt)
 Wipe the packet. More...
int av_packet_ref (AVPacket *dst, const AVPacket *src)
 Setup a new reference to the data described by a given packet. More...
AVPacketav_packet_clone (const AVPacket *src)
 Create a new packet that references the same data as src. More...
void av_packet_move_ref (AVPacket *dst, AVPacket *src)
 Move every field in src to dst and reset src. 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 src_tb, AVRational dst_tb)
 Convert valid timing fields (timestamps / durations) in a packet from one timebase to another. More...
int ff_side_data_set_encoder_stats (AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)

Macro Definition Documentation


#define ALLOC_MALLOC (   data,
)    data = av_malloc(size)

Definition at line 170 of file avpacket.c.


#define ALLOC_BUF (   data,
do { \
av_buffer_realloc(&pkt->buf, size); \
data = pkt->buf ? pkt->buf->data : NULL; \
} while (0)

Definition at line 171 of file avpacket.c.


#define DUP_DATA (   dst,
do { \
void *data; \
if (padding) { \
if ((unsigned)(size) > \
goto failed_alloc; \
} else { \
ALLOC(data, size); \
} \
if (!data) \
goto failed_alloc; \
memcpy(data, src, size); \
if (padding) \
memset((uint8_t *)data + size, 0, \
dst = data; \
} while (0)

Definition at line 177 of file avpacket.c.


#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL

Definition at line 403 of file avpacket.c.

Function Documentation

◆ packet_alloc()

static int packet_alloc ( AVBufferRef **  buf,
int  size 

◆ copy_packet_data()

static int copy_packet_data ( AVPacket pkt,
const AVPacket src,
int  dup 

Definition at line 198 of file avpacket.c.

Referenced by av_copy_packet(), and av_dup_packet().

◆ ff_side_data_set_encoder_stats()

int ff_side_data_set_encoder_stats ( AVPacket pkt,
int  quality,
int64_t *  error,
int  error_count,
int  pict_type 
uint8_t * data
The data buffer.
Definition: buffer.h:89
const char data[16]
Definition: mxf.c:91
#define src
Definition: vp8dsp.c:254
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1460
#define NULL
Definition: coverity.c:32
int size
Definition: twinvq_data.h:11134
Definition: audio_convert.c:194
Definition: avcodec.h:790
static AVPacket pkt
Definition: demuxing_decoding.c:54