e309128f | /* * RTP input/output format |
406792e7 | * Copyright (c) 2002 Fabrice Bellard |
e309128f | * |
b78e7197 | * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or |
e309128f | * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either |
b78e7197 | * version 2.1 of the License, or (at your option) any later version. |
e309128f | * |
b78e7197 | * FFmpeg is distributed in the hope that it will be useful, |
e309128f | * 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 |
b78e7197 | * License along with FFmpeg; if not, write to the Free Software |
5509bffa | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
e309128f | */ |
245976da | |
6c1a7d07 | #include "libavutil/opt.h" |
e309128f | #include "avformat.h" |
20631a9c | #include "rtp.h" |
4934884a | |
d1ccf0e0 | /* from http://www.iana.org/assignments/rtp-parameters last updated 05 January 2005 */ |
2ccf0a42 | /* payload types >= 96 are dynamic; * payload types between 72 and 76 are reserved for RTCP conflict avoidance; * all the other payload types not present in the table are unassigned or * reserved */ |
58b59718 | static const struct { |
7d51eddd | int pt; |
87cb0643 | const char enc_name[6]; |
72415b2a | enum AVMediaType codec_type; |
36ef5369 | enum AVCodecID codec_id; |
7d51eddd | int clock_rate; int audio_channels; |
c44784c9 | } rtp_payload_types[] = { |
36ef5369 | {0, "PCMU", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_MULAW, 8000, 1}, {3, "GSM", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {4, "G723", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_G723_1, 8000, 1}, {5, "DVI4", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {6, "DVI4", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 16000, 1}, {7, "LPC", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {8, "PCMA", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_ALAW, 8000, 1}, {9, "G722", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_ADPCM_G722, 8000, 1}, {10, "L16", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_S16BE, 44100, 2}, {11, "L16", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_S16BE, 44100, 1}, {12, "QCELP", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_QCELP, 8000, 1}, {13, "CN", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {14, "MPA", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP2, -1, -1}, {14, "MPA", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3, -1, -1}, {15, "G728", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {16, "DVI4", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 11025, 1}, {17, "DVI4", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 22050, 1}, {18, "G729", AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_NONE, 8000, 1}, {25, "CelB", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_NONE, 90000, -1}, {26, "JPEG", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MJPEG, 90000, -1}, {28, "nv", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_NONE, 90000, -1}, {31, "H261", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H261, 90000, -1}, {32, "MPV", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG1VIDEO, 90000, -1}, {32, "MPV", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO, 90000, -1}, {33, "MP2T", AVMEDIA_TYPE_DATA, AV_CODEC_ID_MPEG2TS, 90000, -1}, {34, "H263", AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H263, 90000, -1}, {-1, "", AVMEDIA_TYPE_UNKNOWN, AV_CODEC_ID_NONE, -1, -1} |
d1ccf0e0 | }; |
bf6d9818 | int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type) |
e309128f | { |
7ed19d7f | int i = 0; |
c44784c9 | for (i = 0; rtp_payload_types[i].pt >= 0; i++) if (rtp_payload_types[i].pt == payload_type) { if (rtp_payload_types[i].codec_id != AV_CODEC_ID_NONE) { codec->codec_type = rtp_payload_types[i].codec_type; codec->codec_id = rtp_payload_types[i].codec_id; if (rtp_payload_types[i].audio_channels > 0) codec->channels = rtp_payload_types[i].audio_channels; if (rtp_payload_types[i].clock_rate > 0) codec->sample_rate = rtp_payload_types[i].clock_rate; |
7ed19d7f | return 0; } } |
d1ccf0e0 | return -1; |
e309128f | } |
8034130e | int ff_rtp_get_payload_type(AVFormatContext *fmt, AVCodecContext *codec, int idx) |
e309128f | { |
1430ae44 | int i; |
9152880e | AVOutputFormat *ofmt = fmt ? fmt->oformat : NULL; /* Was the payload type already specified for the RTP muxer? */ |
a925f723 | if (ofmt && ofmt->priv_class && fmt->priv_data) { |
3b3ea346 | int64_t payload_type; |
2e69dd66 | if (av_opt_get_int(fmt->priv_data, "payload_type", 0, &payload_type) >= 0 && payload_type >= 0) |
3b3ea346 | return (int)payload_type; |
1430ae44 | } |
e309128f | |
1430ae44 | /* static payload type */ |
c44784c9 | for (i = 0; rtp_payload_types[i].pt >= 0; ++i) if (rtp_payload_types[i].codec_id == codec->codec_id) { |
93211717 | if (codec->codec_id == AV_CODEC_ID_H263 && (!fmt || !fmt->oformat || |
e90820d4 | !fmt->oformat->priv_class || !fmt->priv_data || |
c4584f3c | !av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190"))) |
21503788 | continue; |
999c63e4 | /* G722 has 8000 as nominal rate even if the sample rate is 16000, * see section 4.5.2 in RFC 3551. */ |
36ef5369 | if (codec->codec_id == AV_CODEC_ID_ADPCM_G722 && |
999c63e4 | codec->sample_rate == 16000 && codec->channels == 1) |
c44784c9 | return rtp_payload_types[i].pt; |
999c63e4 | if (codec->codec_type == AVMEDIA_TYPE_AUDIO && |
c44784c9 | ((rtp_payload_types[i].clock_rate > 0 && codec->sample_rate != rtp_payload_types[i].clock_rate) || (rtp_payload_types[i].audio_channels > 0 && codec->channels != rtp_payload_types[i].audio_channels))) |
999c63e4 | continue; |
c44784c9 | return rtp_payload_types[i].pt; |
e309128f | } |
0c378ea1 | |
8034130e | if (idx < 0) idx = codec->codec_type == AVMEDIA_TYPE_AUDIO; |
0c378ea1 | /* dynamic payload type */ |
8034130e | return RTP_PT_PRIVATE + idx; |
e309128f | } |
7ed19d7f | const char *ff_rtp_enc_name(int payload_type) { int i; |
c44784c9 | for (i = 0; rtp_payload_types[i].pt >= 0; i++) if (rtp_payload_types[i].pt == payload_type) return rtp_payload_types[i].enc_name; |
7ed19d7f | return ""; } |
36ef5369 | enum AVCodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type) |
7ed19d7f | { int i; |
c44784c9 | for (i = 0; rtp_payload_types[i].pt >= 0; i++) if (!strcmp(buf, rtp_payload_types[i].enc_name) && (codec_type == rtp_payload_types[i].codec_type)) return rtp_payload_types[i].codec_id; |
7ed19d7f | |
36ef5369 | return AV_CODEC_ID_NONE; |
7ed19d7f | } |