avpacket.c File Reference

#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.

Macros
#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

Functions
void	ff_packet_free_side_data (AVPacket *pkt)
	Remove and free all side data from packet.
void	av_init_packet (AVPacket *pkt)
	Initialize optional fields of a packet with default values.
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_free_packet (AVPacket *pkt)
	Free a packet.
uint8_t *	av_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
	Allocate new information of a packet.
uint8_t *	av_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)
int	av_packet_shrink_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
	Shrink the already allocated side data buffer.

Macro Definition Documentation

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

Definition at line 155 of file avpacket.c.

Referenced by av_copy_packet_side_data().

#define ALLOC_BUF	(		data,
			size
	)

Value:

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

Definition at line 156 of file avpacket.c.

Referenced by copy_packet_data().

#define DUP_DATA	(		dst,
			src,
			size,
			padding,
			ALLOC
	)

Value:

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

Definition at line 162 of file avpacket.c.

Referenced by av_copy_packet_side_data(), and copy_packet_data().

#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL

Definition at line 316 of file avpacket.c.

Referenced by av_packet_merge_side_data(), and av_packet_split_side_data().

Function Documentation

void ff_packet_free_side_data

(

AVPacket *

pkt

)

Remove and free all side data from packet.

Definition at line 31 of file avpacket.c.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), and avcodec_decode_video2().

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

static

Definition at line 183 of file avpacket.c.

Referenced by av_copy_packet(), and av_dup_packet().