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Macros | Functions
avpacket.c File Reference
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.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_destruct_packet (AVPacket *pkt)
 Default packet destructor.
static void dummy_destruct_packet (AVPacket *pkt)
void av_init_packet (AVPacket *pkt)
 Initialize optional fields of a packet with default values.
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.
void av_shrink_packet (AVPacket *pkt, int size)
 Reduce packet size, correctly zeroing padding.
int av_grow_packet (AVPacket *pkt, int grow_by)
 Increase packet size, correctly zeroing padding.
int av_packet_from_data (AVPacket *pkt, uint8_t *data, int size)
 Initialize a reference-counted packet from av_malloc()ed data.
static int copy_packet_data (AVPacket *pkt, AVPacket *src, int dup)
int av_copy_packet_side_data (AVPacket *pkt, AVPacket *src)
 Copy packet side data.
int av_dup_packet (AVPacket *pkt)
int av_copy_packet (AVPacket *dst, AVPacket *src)
 Copy packet, including contents.
void av_packet_free_side_data (AVPacket *pkt)
 Convenience function to free all the side data stored.
void av_free_packet (AVPacket *pkt)
 Free a packet.
uint8_tav_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
 Allocate new information of a packet.
uint8_tav_packet_get_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int *size)
 Get side information from packet.
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.
int av_packet_unpack_dictionary (const uint8_t *data, int size, AVDictionary **dict)
 Unpack a dictionary from side_data.
int av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
 Shrink the already allocated side data buffer.
int av_packet_copy_props (AVPacket *dst, const AVPacket *src)
 Copy only "properties" fields from src to dst.
void av_packet_unref (AVPacket *pkt)
 Wipe the packet.
int av_packet_ref (AVPacket *dst, AVPacket *src)
 Setup a new reference to the data described by a given packet.
void av_packet_move_ref (AVPacket *dst, AVPacket *src)
 Move every field in src to dst and reset src.

Macro Definition Documentation

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

Definition at line 165 of file avpacket.c.

Referenced by av_copy_packet_side_data().

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

Definition at line 166 of file avpacket.c.

Referenced by copy_packet_data().

#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 172 of file avpacket.c.

Referenced by av_copy_packet_side_data(), and copy_packet_data().

#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL

Definition at line 339 of file avpacket.c.

Referenced by av_packet_merge_side_data(), and av_packet_split_side_data().

Function Documentation

static void dummy_destruct_packet ( AVPacket pkt)
static int packet_alloc ( AVBufferRef **  buf,
int  size 

Definition at line 68 of file avpacket.c.

Referenced by av_new_packet(), and av_packet_ref().

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

Definition at line 193 of file avpacket.c.

Referenced by av_copy_packet(), and av_dup_packet().