2
* RTP input/output format
3
* Copyright (c) 2002 Fabrice Bellard
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
28
/* from http://www.iana.org/assignments/rtp-parameters last updated 05 January 2005 */
29
/* payload types >= 96 are dynamic;
30
* payload types between 72 and 76 are reserved for RTCP conflict avoidance;
31
* all the other payload types not present in the table are unassigned or
37
const char enc_name[6];
38
enum AVMediaType codec_type;
39
enum CodecID codec_id;
42
} AVRtpPayloadTypes[]=
44
{0, "PCMU", AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_MULAW, 8000, 1},
45
{3, "GSM", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
46
{4, "G723", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
47
{5, "DVI4", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
48
{6, "DVI4", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 16000, 1},
49
{7, "LPC", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
50
{8, "PCMA", AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_ALAW, 8000, 1},
51
{9, "G722", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
52
{10, "L16", AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_S16BE, 44100, 2},
53
{11, "L16", AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_S16BE, 44100, 1},
54
{12, "QCELP", AVMEDIA_TYPE_AUDIO, CODEC_ID_QCELP, 8000, 1},
55
{13, "CN", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
56
{14, "MPA", AVMEDIA_TYPE_AUDIO, CODEC_ID_MP2, -1, -1},
57
{14, "MPA", AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3, -1, -1},
58
{15, "G728", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
59
{16, "DVI4", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 11025, 1},
60
{17, "DVI4", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 22050, 1},
61
{18, "G729", AVMEDIA_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
62
{25, "CelB", AVMEDIA_TYPE_VIDEO, CODEC_ID_NONE, 90000, -1},
63
{26, "JPEG", AVMEDIA_TYPE_VIDEO, CODEC_ID_MJPEG, 90000, -1},
64
{28, "nv", AVMEDIA_TYPE_VIDEO, CODEC_ID_NONE, 90000, -1},
65
{31, "H261", AVMEDIA_TYPE_VIDEO, CODEC_ID_H261, 90000, -1},
66
{32, "MPV", AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG1VIDEO, 90000, -1},
67
{32, "MPV", AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO, 90000, -1},
68
{33, "MP2T", AVMEDIA_TYPE_DATA, CODEC_ID_MPEG2TS, 90000, -1},
69
{34, "H263", AVMEDIA_TYPE_VIDEO, CODEC_ID_H263, 90000, -1},
70
{-1, "", AVMEDIA_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1}
73
int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type)
77
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
78
if (AVRtpPayloadTypes[i].pt == payload_type) {
79
if (AVRtpPayloadTypes[i].codec_id != CODEC_ID_NONE) {
80
codec->codec_type = AVRtpPayloadTypes[i].codec_type;
81
codec->codec_id = AVRtpPayloadTypes[i].codec_id;
82
if (AVRtpPayloadTypes[i].audio_channels > 0)
83
codec->channels = AVRtpPayloadTypes[i].audio_channels;
84
if (AVRtpPayloadTypes[i].clock_rate > 0)
85
codec->sample_rate = AVRtpPayloadTypes[i].clock_rate;
92
int ff_rtp_get_payload_type(AVCodecContext *codec)
96
/* compute the payload type */
97
for (payload_type = -1, i = 0; AVRtpPayloadTypes[i].pt >= 0; ++i)
98
if (AVRtpPayloadTypes[i].codec_id == codec->codec_id) {
99
if (codec->codec_id == CODEC_ID_H263)
101
if (codec->codec_id == CODEC_ID_PCM_S16BE)
102
if (codec->channels != AVRtpPayloadTypes[i].audio_channels)
104
payload_type = AVRtpPayloadTypes[i].pt;
109
const char *ff_rtp_enc_name(int payload_type)
113
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
114
if (AVRtpPayloadTypes[i].pt == payload_type) {
115
return AVRtpPayloadTypes[i].enc_name;
121
enum CodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type)
125
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
126
if (!strcmp(buf, AVRtpPayloadTypes[i].enc_name) && (codec_type == AVRtpPayloadTypes[i].codec_type)){
127
return AVRtpPayloadTypes[i].codec_id;
130
return CODEC_ID_NONE;