mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
|
|
* RTP packetization for H.261 video (RFC 4587)
|
|
* Copyright (c) 2014 Thomas Volkert <thomas@homer-conferencing.com>
|
|
*
|
|
* 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 "rtpenc.h"
|
|
|
|
void ff_rtp_send_h261(AVFormatContext *s1, const uint8_t *frame_buf, int frame_size)
|
|
{
|
|
RTPMuxContext *rtp_ctx = s1->priv_data;
|
|
int processed_frame_size;
|
|
int last_packet_of_frame;
|
|
uint8_t *tmp_buf_ptr;
|
|
|
|
/* use the default 90 KHz time stamp */
|
|
rtp_ctx->timestamp = rtp_ctx->cur_timestamp;
|
|
|
|
/* continue as long as not all frame data is processed */
|
|
while (frame_size > 0) {
|
|
tmp_buf_ptr = rtp_ctx->buf;
|
|
*tmp_buf_ptr++ = 1; /* V=1 */
|
|
*tmp_buf_ptr++ = 0;
|
|
*tmp_buf_ptr++ = 0;
|
|
*tmp_buf_ptr++ = 0;
|
|
|
|
processed_frame_size = FFMIN(rtp_ctx->max_payload_size - 4, frame_size);
|
|
|
|
//XXX: parse the h.261 bitstream and improve frame splitting here
|
|
|
|
last_packet_of_frame = (processed_frame_size == frame_size);
|
|
|
|
memcpy(tmp_buf_ptr, frame_buf, processed_frame_size);
|
|
tmp_buf_ptr += processed_frame_size;
|
|
|
|
ff_rtp_send_data(s1, rtp_ctx->buf, tmp_buf_ptr - rtp_ctx->buf, last_packet_of_frame);
|
|
|
|
frame_buf += processed_frame_size;
|
|
frame_size -= processed_frame_size;
|
|
}
|
|
}
|