FFmpeg
libavformat
rtpenc_vp9.c
Go to the documentation of this file.
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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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}
ff_rtp_send_vp9
void ff_rtp_send_vp9(AVFormatContext *ctx, const uint8_t *buf, int size)
Definition:
rtpenc_vp9.c:26
RTP_VP9_DESC_REQUIRED_SIZE
#define RTP_VP9_DESC_REQUIRED_SIZE
Definition:
rtpenc_vp9.c:24
ff_rtp_send_data
void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m)
Definition:
rtpenc.c:335
ctx
AVFormatContext * ctx
Definition:
movenc.c:48
RTPMuxContext::cur_timestamp
uint32_t cur_timestamp
Definition:
rtpenc.h:37
AVFormatContext
Format I/O context.
Definition:
avformat.h:1104
RTPMuxContext
Definition:
rtpenc.h:27
RTPMuxContext::buf
uint8_t * buf
Definition:
rtpenc.h:49
RTPMuxContext::timestamp
uint32_t timestamp
Definition:
rtpenc.h:35
size
int size
Definition:
twinvq_data.h:10344
FFMIN
#define FFMIN(a, b)
Definition:
macros.h:49
len
int len
Definition:
vorbis_enc_data.h:426
rtpenc.h
RTPMuxContext::max_payload_size
int max_payload_size
Definition:
rtpenc.h:38
RTPMuxContext::buf_ptr
uint8_t * buf_ptr
Definition:
rtpenc.h:50
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition:
avformat.h:1132
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