mirror of
https://github.com/pikvm/ustreamer.git
synced 2026-02-27 12:16:31 +00:00
64 lines
2.6 KiB
C
64 lines
2.6 KiB
C
/*****************************************************************************
|
|
# #
|
|
# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
|
|
# #
|
|
# This source file is partially based on this code: #
|
|
# - https://github.com/catid/kvm/blob/master/kvm_pipeline/src #
|
|
# #
|
|
# Copyright (C) 2018-2023 Maxim Devaev <mdevaev@gmail.com> #
|
|
# #
|
|
# This program is free software: you can redistribute it and/or modify #
|
|
# it under the terms of the GNU General Public License as published by #
|
|
# the Free Software Foundation, either version 3 of the License, or #
|
|
# (at your option) any later version. #
|
|
# #
|
|
# This program 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 General Public License for more details. #
|
|
# #
|
|
# You should have received a copy of the GNU General Public License #
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
|
|
# #
|
|
*****************************************************************************/
|
|
|
|
|
|
#include "rtp.h"
|
|
|
|
|
|
us_rtp_s *us_rtp_init(unsigned payload, bool video) {
|
|
us_rtp_s *rtp;
|
|
US_CALLOC(rtp, 1);
|
|
rtp->payload = payload;
|
|
rtp->video = video;
|
|
rtp->ssrc = us_triple_u32(us_get_now_monotonic_u64());
|
|
return rtp;
|
|
}
|
|
|
|
us_rtp_s *us_rtp_dup(const us_rtp_s *rtp) {
|
|
us_rtp_s *new;
|
|
US_CALLOC(new, 1);
|
|
memcpy(new, rtp, sizeof(us_rtp_s));
|
|
return new;
|
|
}
|
|
|
|
void us_rtp_destroy(us_rtp_s *rtp) {
|
|
free(rtp);
|
|
}
|
|
|
|
void us_rtp_write_header(us_rtp_s *rtp, uint32_t pts, bool marked) {
|
|
uint32_t word0 = 0x80000000;
|
|
if (marked) {
|
|
word0 |= 1 << 23;
|
|
}
|
|
word0 |= (rtp->payload & 0x7F) << 16;
|
|
word0 |= rtp->seq;
|
|
++rtp->seq;
|
|
|
|
# define WRITE_BE_U32(_offset, _value) *((uint32_t *)(rtp->datagram + _offset)) = __builtin_bswap32(_value)
|
|
WRITE_BE_U32(0, word0);
|
|
WRITE_BE_U32(4, pts);
|
|
WRITE_BE_U32(8, rtp->ssrc);
|
|
# undef WRITE_BE_U32
|
|
}
|