2 * RTP iLBC Depacketizer, RFC 3952
3 * Copyright (c) 2012 Martin Storsjo
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "rtpdec_formats.h"
24 #include "libavutil/avstring.h"
26 static int ilbc_parse_fmtp(AVStream *stream, PayloadContext *data,
27 char *attr, char *value)
29 if (!strcmp(attr, "mode")) {
30 int mode = atoi(value);
33 stream->codec->block_align = 38;
36 stream->codec->block_align = 50;
39 av_log(NULL, AV_LOG_ERROR, "Unsupported iLBC mode %d\n", mode);
40 return AVERROR(EINVAL);
46 static int ilbc_parse_sdp_line(AVFormatContext *s, int st_index,
47 PayloadContext *data, const char *line)
54 st = s->streams[st_index];
56 if (av_strstart(line, "fmtp:", &p)) {
57 int ret = ff_parse_fmtp(st, data, p, ilbc_parse_fmtp);
60 if (!st->codec->block_align) {
61 av_log(s, AV_LOG_ERROR, "No iLBC mode set\n");
62 return AVERROR(EINVAL);
68 RTPDynamicProtocolHandler ff_ilbc_dynamic_handler = {
70 .codec_type = AVMEDIA_TYPE_AUDIO,
71 .codec_id = CODEC_ID_ILBC,
72 .parse_sdp_a_line = ilbc_parse_sdp_line,