/*
* This file is part of FFmpeg .
*
* FFmpeg is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 . 1 of the License , or ( at your option ) any later version .
*
* FFmpeg is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA
*/
#ifndef AVCODEC_PACKET_INTERNAL_H
#define AVCODEC_PACKET_INTERNAL_H
#include <stdint.h>
#include "packet.h"
#define AVPACKET_IS_EMPTY(pkt) (!(pkt)->data && !(pkt)->side_data_elems)
typedef struct PacketListEntry {
struct PacketListEntry *next;
AVPacket pkt;
} PacketListEntry;
typedef struct PacketList {
PacketListEntry *head, *tail;
} PacketList;
#define FF_PACKETLIST_FLAG_PREPEND (1 << 0 ) /**< Prepend created AVPacketList instead of appending */
/**
* Append an AVPacket to the list .
*
* @ param list A PacketList
* @ param pkt The packet being appended . The data described in it will
* be made reference counted if it isn ' t already .
* @ param copy A callback to copy the contents of the packet to the list .
May be null , in which case the packet ' s reference will be
moved to the list .
* @ return 0 on success , negative AVERROR value on failure . On failure ,
the packet and the list are unchanged .
*/
int avpriv_packet_list_put(PacketList *list, AVPacket *pkt,
int (*copy)(AVPacket *dst, const AVPacket *src),
int flags);
/**
* Remove the oldest AVPacket in the list and return it .
*
* @ note The pkt will be overwritten completely on success . The caller
* owns the packet and must unref it by itself .
*
* @ param head A pointer to a PacketList struct
* @ param pkt Pointer to an AVPacket struct
* @ return 0 on success , and a packet is returned . AVERROR ( EAGAIN ) if
* the list was empty .
*/
int avpriv_packet_list_get(PacketList *list, AVPacket *pkt);
/**
* Wipe the list and unref all the packets in it .
*/
void avpriv_packet_list_free(PacketList *list);
int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp);
#endif // AVCODEC_PACKET_INTERNAL_H
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