1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVCODEC_PACKET_INTERNAL_H
20 #define AVCODEC_PACKET_INTERNAL_H
21 
22 #include <stdint.h>
23 
24 #include "packet.h"
25 
26 typedef struct PacketListEntry {
27     struct PacketListEntry *next;
28     AVPacket pkt;
29 } PacketListEntry;
30 
31 typedef struct PacketList {
32     PacketListEntry *head, *tail;
33 } PacketList;
34 
35 /**
36  * Append an AVPacket to the list.
37  *
38  * @param list  A PacketList
39  * @param pkt   The packet being appended. The data described in it will
40  *              be made reference counted if it isn't already.
41  * @param copy  A callback to copy the contents of the packet to the list.
42                 May be null, in which case the packet's reference will be
43                 moved to the list.
44  * @return 0 on success, negative AVERROR value on failure. On failure,
45            the packet and the list are unchanged.
46  */
47 int avpriv_packet_list_put(PacketList *list, AVPacket *pkt,
48                            int (*copy)(AVPacket *dst, const AVPacket *src),
49                            int flags);
50 
51 /**
52  * Remove the oldest AVPacket in the list and return it.
53  *
54  * @note The pkt will be overwritten completely on success. The caller
55  *       owns the packet and must unref it by itself.
56  *
57  * @param head A pointer to a PacketList struct
58  * @param pkt  Pointer to an AVPacket struct
59  * @return 0 on success, and a packet is returned. AVERROR(EAGAIN) if
60  *         the list was empty.
61  */
62 int avpriv_packet_list_get(PacketList *list, AVPacket *pkt);
63 
64 /**
65  * Wipe the list and unref all the packets in it.
66  */
67 void avpriv_packet_list_free(PacketList *list);
68 
69 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type);
70 
71 int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp);
72 
73 #endif // AVCODEC_PACKET_INTERNAL_H
74