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54849fe663
The avpriv_packet_list_put/get/free() functions and the PacketList type were implemented in libavcodec and exported via the avpriv_ mechanism solely so that libavformat (and decklink in libavdevice) could use them; libavcodec itself has no users of them. Exporting them across the library boundary has the usual drawbacks for shared builds (export/import overhead and having to keep them around for ABI stability even once unneeded). Move the implementation and the PacketList/PacketListEntry types to libavformat and rename the functions to ff_packet_list_*(). libavformat is the primary user and compiles the new packet_list.c directly; decklink, the only libavdevice user, gets a private copy for shared builds via the SHLIBOBJS scheme already used for reverse.o and ccfifo.o (static builds resolve the symbols from libavformat). AVPACKET_IS_EMPTY() and ff_side_data_set_prft() remain in libavcodec/packet_internal.h as they are libavcodec-internal.
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include "libavutil/avutil.h"
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#include "libavutil/error.h"
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#include "libavutil/mem.h"
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#include "libavutil/rational.h"
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#include "libavcodec/packet.h"
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#include "packet_internal.h"
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static void get_packet_defaults(AVPacket *pkt)
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{
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memset(pkt, 0, sizeof(*pkt));
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pkt->pts = AV_NOPTS_VALUE;
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pkt->dts = AV_NOPTS_VALUE;
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pkt->pos = -1;
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pkt->time_base = av_make_q(0, 1);
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}
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int ff_packet_list_put(PacketList *packet_buffer,
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AVPacket *pkt,
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int (*copy)(AVPacket *dst, const AVPacket *src),
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int flags)
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{
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PacketListEntry *pktl = av_malloc(sizeof(*pktl));
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unsigned int update_end_point = 1;
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int ret;
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if (!pktl)
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return AVERROR(ENOMEM);
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if (copy) {
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get_packet_defaults(&pktl->pkt);
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ret = copy(&pktl->pkt, pkt);
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if (ret < 0) {
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av_free(pktl);
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return ret;
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}
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} else {
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ret = av_packet_make_refcounted(pkt);
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if (ret < 0) {
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av_free(pktl);
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return ret;
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}
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av_packet_move_ref(&pktl->pkt, pkt);
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}
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pktl->next = NULL;
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if (packet_buffer->head) {
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if (flags & FF_PACKETLIST_FLAG_PREPEND) {
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pktl->next = packet_buffer->head;
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packet_buffer->head = pktl;
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update_end_point = 0;
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} else {
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packet_buffer->tail->next = pktl;
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}
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} else
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packet_buffer->head = pktl;
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if (update_end_point) {
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/* Add the packet in the buffered packet list. */
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packet_buffer->tail = pktl;
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}
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return 0;
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}
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int ff_packet_list_get(PacketList *pkt_buffer,
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AVPacket *pkt)
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{
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PacketListEntry *pktl = pkt_buffer->head;
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if (!pktl)
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return AVERROR(EAGAIN);
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*pkt = pktl->pkt;
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pkt_buffer->head = pktl->next;
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if (!pkt_buffer->head)
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pkt_buffer->tail = NULL;
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av_freep(&pktl);
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return 0;
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}
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void ff_packet_list_free(PacketList *pkt_buf)
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{
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PacketListEntry *tmp = pkt_buf->head;
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while (tmp) {
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PacketListEntry *pktl = tmp;
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tmp = pktl->next;
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av_packet_unref(&pktl->pkt);
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av_freep(&pktl);
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}
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pkt_buf->head = pkt_buf->tail = NULL;
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}
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