1 /* 2 * Copyright (c) 2011 Miroslav Slugeň <Thunder.m@seznam.cz> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #include "libavutil/attributes.h" 22 #include "avformat.h" 23 #include "rtpdec_formats.h" 24 25 #define RTP_G726_HANDLER(bitrate) \ 26 static av_cold int g726_ ## bitrate ##_init(AVFormatContext *s, int st_index, \ 27 PayloadContext *data) \ 28 { \ 29 AVStream *stream = s->streams[st_index]; \ 30 AVCodecParameters *par = stream->codecpar; \ 31 \ 32 par->bits_per_coded_sample = bitrate/8; \ 33 par->bit_rate = par->bits_per_coded_sample * par->sample_rate; \ 34 \ 35 return 0; \ 36 } \ 37 \ 38 const RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \ 39 .enc_name = "AAL2-G726-" #bitrate, \ 40 .codec_type = AVMEDIA_TYPE_AUDIO, \ 41 .codec_id = AV_CODEC_ID_ADPCM_G726, \ 42 .init = g726_ ## bitrate ## _init, \ 43 }; \ 44 const RTPDynamicProtocolHandler ff_g726le_ ## bitrate ## _dynamic_handler = { \ 45 .enc_name = "G726-" #bitrate, \ 46 .codec_type = AVMEDIA_TYPE_AUDIO, \ 47 .codec_id = AV_CODEC_ID_ADPCM_G726LE, \ 48 .init = g726_ ## bitrate ## _init, \ 49 } 50 51 RTP_G726_HANDLER(16); 52 RTP_G726_HANDLER(24); 53 RTP_G726_HANDLER(32); 54 RTP_G726_HANDLER(40); 55