aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* RTP packetizer for VP9 payload format (draft version 02) - experimental
* Copyright (c) 2016 Thomas Volkert <thomas@netzeal.de>
*
* 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 "rtpenc.h"
#define RTP_VP9_DESC_REQUIRED_SIZE 1
void ff_rtp_send_vp9(AVFormatContext *ctx, const uint8_t *buf, int size)
{
RTPMuxContext *rtp_ctx = ctx->priv_data;
int len;
rtp_ctx->timestamp = rtp_ctx->cur_timestamp;
rtp_ctx->buf_ptr = rtp_ctx->buf;
/* mark the first fragment */
*rtp_ctx->buf_ptr++ = 0x08;
while (size > 0) {
len = FFMIN(size, rtp_ctx->max_payload_size - RTP_VP9_DESC_REQUIRED_SIZE);
if (len == size) {
/* mark the last fragment */
rtp_ctx->buf[0] |= 0x04;
}
memcpy(rtp_ctx->buf_ptr, buf, len);
ff_rtp_send_data(ctx, rtp_ctx->buf, len + RTP_VP9_DESC_REQUIRED_SIZE, size == len);
size -= len;
buf += len;
/* clear the end bit */
rtp_ctx->buf[0] &= ~0x08;
}
}
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