69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
|
|
* RTP packetization for MPEG video
|
|
* Copyright (c) 2002 Fabrice Bellard.
|
|
*
|
|
* 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
|
|
*/
|
|
#include "avformat.h"
|
|
#include "rtp_internal.h"
|
|
|
|
/* NOTE: a single frame must be passed with sequence header if
|
|
needed. XXX: use slices. */
|
|
void ff_rtp_send_mpegvideo(AVFormatContext *s1, const uint8_t *buf1, int size)
|
|
{
|
|
RTPDemuxContext *s = s1->priv_data;
|
|
AVStream *st = s1->streams[0];
|
|
int len, h, max_packet_size;
|
|
int b=1, e=0;
|
|
uint8_t *q;
|
|
|
|
max_packet_size = s->max_payload_size;
|
|
|
|
while (size > 0) {
|
|
len = max_packet_size - 4;
|
|
|
|
if (len >= size) {
|
|
len = size;
|
|
e = 1;
|
|
}
|
|
|
|
h = 0;
|
|
h |= b << 12;
|
|
h |= e << 11;
|
|
|
|
q = s->buf;
|
|
*q++ = h >> 24;
|
|
*q++ = h >> 16;
|
|
*q++ = h >> 8;
|
|
*q++ = h;
|
|
|
|
memcpy(q, buf1, len);
|
|
q += len;
|
|
|
|
/* 90 KHz time stamp */
|
|
s->timestamp = s->base_timestamp +
|
|
av_rescale((int64_t)s->cur_timestamp * st->codec->time_base.num, 90000, st->codec->time_base.den); //FIXME pass timestamps
|
|
ff_rtp_send_data(s1, s->buf, q - s->buf, (len == size));
|
|
|
|
buf1 += len;
|
|
size -= len;
|
|
}
|
|
s->cur_timestamp++;
|
|
}
|
|
|
|
|