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FFmpeg/libavformat/rtp.c
Michael Niedermayer 7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00

154 lines
6.2 KiB
C

/*
* RTP input/output format
* Copyright (c) 2002 Fabrice Bellard
*
* 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 <libavutil/opt.h>
#include "avformat.h"
#include "rtp.h"
//#define DEBUG
/* from http://www.iana.org/assignments/rtp-parameters last updated 05 January 2005 */
/* 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
*/
static const struct
{
int pt;
const char enc_name[6];
enum AVMediaType codec_type;
enum AVCodecID codec_id;
int clock_rate;
int audio_channels;
} AVRtpPayloadTypes[]=
{
{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}
};
int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type)
{
int i = 0;
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
if (AVRtpPayloadTypes[i].pt == payload_type) {
if (AVRtpPayloadTypes[i].codec_id != AV_CODEC_ID_NONE) {
codec->codec_type = AVRtpPayloadTypes[i].codec_type;
codec->codec_id = AVRtpPayloadTypes[i].codec_id;
if (AVRtpPayloadTypes[i].audio_channels > 0)
codec->channels = AVRtpPayloadTypes[i].audio_channels;
if (AVRtpPayloadTypes[i].clock_rate > 0)
codec->sample_rate = AVRtpPayloadTypes[i].clock_rate;
return 0;
}
}
return -1;
}
int ff_rtp_get_payload_type(AVFormatContext *fmt, AVCodecContext *codec)
{
int i;
AVOutputFormat *ofmt = fmt ? fmt->oformat : NULL;
/* Was the payload type already specified for the RTP muxer? */
if (ofmt && ofmt->priv_class) {
int64_t payload_type;
if (av_opt_get_int(fmt->priv_data, "payload_type", 0, &payload_type) >= 0 &&
payload_type >= 0)
return (int)payload_type;
}
/* static payload type */
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; ++i)
if (AVRtpPayloadTypes[i].codec_id == codec->codec_id) {
if (codec->codec_id == AV_CODEC_ID_H263 && (!fmt ||
!fmt->oformat->priv_class ||
!av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190")))
continue;
/* G722 has 8000 as nominal rate even if the sample rate is 16000,
* see section 4.5.2 in RFC 3551. */
if (codec->codec_id == AV_CODEC_ID_ADPCM_G722 &&
codec->sample_rate == 16000 && codec->channels == 1)
return AVRtpPayloadTypes[i].pt;
if (codec->codec_type == AVMEDIA_TYPE_AUDIO &&
((AVRtpPayloadTypes[i].clock_rate > 0 &&
codec->sample_rate != AVRtpPayloadTypes[i].clock_rate) ||
(AVRtpPayloadTypes[i].audio_channels > 0 &&
codec->channels != AVRtpPayloadTypes[i].audio_channels)))
continue;
return AVRtpPayloadTypes[i].pt;
}
/* dynamic payload type */
return RTP_PT_PRIVATE + (codec->codec_type == AVMEDIA_TYPE_AUDIO);
}
const char *ff_rtp_enc_name(int payload_type)
{
int i;
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
if (AVRtpPayloadTypes[i].pt == payload_type) {
return AVRtpPayloadTypes[i].enc_name;
}
return "";
}
enum AVCodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type)
{
int i;
for (i = 0; AVRtpPayloadTypes[i].pt >= 0; i++)
if (!strcmp(buf, AVRtpPayloadTypes[i].enc_name) && (codec_type == AVRtpPayloadTypes[i].codec_type)){
return AVRtpPayloadTypes[i].codec_id;
}
return AV_CODEC_ID_NONE;
}