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FFmpeg/libavcodec/packet_internal.h
Andreas Rheinhardt d61240f8c9 avcodec/packet_internal: Add proper PacketList struct
Up until now, we had a PacketList structure which is actually
a PacketListEntry; a proper PacketList did not exist
and all the related functions just passed pointers to pointers
to the head and tail elements around. All these pointers were
actually consecutive elements of their containing structs,
i.e. the users already treated them as if they were a struct.

So add a proper PacketList struct and rename the current PacketList
to PacketListEntry; also make the functions use this structure
instead of the pair of pointers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-01-04 13:16:50 +01:00

74 lines
2.5 KiB
C

/*
* 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"
typedef struct PacketListEntry {
struct PacketListEntry *next;
AVPacket pkt;
} PacketListEntry;
typedef struct PacketList {
PacketListEntry *head, *tail;
} PacketList;
/**
* 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_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type);
int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp);
#endif // AVCODEC_PACKET_INTERNAL_H