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