packet_internal.h (2594B)
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 #define AVPACKET_IS_EMPTY(pkt) (!(pkt)->data && !(pkt)->side_data_elems) 27 28 typedef struct PacketListEntry { 29 struct PacketListEntry *next; 30 AVPacket pkt; 31 } PacketListEntry; 32 33 typedef struct PacketList { 34 PacketListEntry *head, *tail; 35 } PacketList; 36 37 /** 38 * Append an AVPacket to the list. 39 * 40 * @param list A PacketList 41 * @param pkt The packet being appended. The data described in it will 42 * be made reference counted if it isn't already. 43 * @param copy A callback to copy the contents of the packet to the list. 44 May be null, in which case the packet's reference will be 45 moved to the list. 46 * @return 0 on success, negative AVERROR value on failure. On failure, 47 the packet and the list are unchanged. 48 */ 49 int avpriv_packet_list_put(PacketList *list, AVPacket *pkt, 50 int (*copy)(AVPacket *dst, const AVPacket *src), 51 int flags); 52 53 /** 54 * Remove the oldest AVPacket in the list and return it. 55 * 56 * @note The pkt will be overwritten completely on success. The caller 57 * owns the packet and must unref it by itself. 58 * 59 * @param head A pointer to a PacketList struct 60 * @param pkt Pointer to an AVPacket struct 61 * @return 0 on success, and a packet is returned. AVERROR(EAGAIN) if 62 * the list was empty. 63 */ 64 int avpriv_packet_list_get(PacketList *list, AVPacket *pkt); 65 66 /** 67 * Wipe the list and unref all the packets in it. 68 */ 69 void avpriv_packet_list_free(PacketList *list); 70 71 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type); 72 73 int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp); 74 75 #endif // AVCODEC_PACKET_INTERNAL_H