mirror of
https://github.com/librempeg/librempeg
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73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
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/*
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* RTP packetization for MPEG video
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* Copyright (c) 2002 Fabrice Bellard.
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*
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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 "avformat.h"
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#include "rtp_internal.h"
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/* NOTE: a single frame must be passed with sequence header if
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needed. XXX: use slices. */
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void ff_rtp_send_mpegvideo(AVFormatContext *s1, const uint8_t *buf1, int size)
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{
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RTPDemuxContext *s = s1->priv_data;
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AVStream *st = s1->streams[0];
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int len, h, max_packet_size;
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uint8_t *q;
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max_packet_size = s->max_payload_size;
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while (size > 0) {
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/* XXX: more correct headers */
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h = 0;
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if (st->codec->sub_id == 2)
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h |= 1 << 26; /* mpeg 2 indicator */
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q = s->buf;
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*q++ = h >> 24;
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*q++ = h >> 16;
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*q++ = h >> 8;
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*q++ = h;
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if (st->codec->sub_id == 2) {
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h = 0;
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*q++ = h >> 24;
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*q++ = h >> 16;
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*q++ = h >> 8;
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*q++ = h;
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}
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len = max_packet_size - (q - s->buf);
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if (len > size)
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len = size;
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memcpy(q, buf1, len);
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q += len;
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/* 90 KHz time stamp */
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s->timestamp = s->base_timestamp +
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av_rescale((int64_t)s->cur_timestamp * st->codec->time_base.num, 90000, st->codec->time_base.den); //FIXME pass timestamps
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ff_rtp_send_data(s1, s->buf, q - s->buf, (len == size));
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buf1 += len;
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size -= len;
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}
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s->cur_timestamp++;
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}
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