/* * 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; } }