| 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 | AVCodecContext *codec = stream->codec; \ |
| 31 | \ |
| 32 | codec->bits_per_coded_sample = bitrate/8; \ |
| 33 | codec->bit_rate = codec->bits_per_coded_sample * codec->sample_rate; \ |
| 34 | \ |
| 35 | return 0; \ |
| 36 | } \ |
| 37 | \ |
| 38 | RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \ |
| 39 | .enc_name = "G726-" #bitrate, \ |
| 40 | .codec_type = AVMEDIA_TYPE_AUDIO, \ |
| 41 | .codec_id = AV_CODEC_ID_ADPCM_G726, \ |
| 42 | .init = g726_ ## bitrate ## _init, \ |
| 43 | } |
| 44 | |
| 45 | RTP_G726_HANDLER(16); |
| 46 | RTP_G726_HANDLER(24); |
| 47 | RTP_G726_HANDLER(32); |
| 48 | RTP_G726_HANDLER(40); |