| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RTP iLBC Depacketizer, RFC 3952 | ||
| 3 | * Copyright (c) 2012 Martin Storsjo | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 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. | ||
| 11 | * | ||
| 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. | ||
| 16 | * | ||
| 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 | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "avformat.h" | ||
| 23 | #include "rtpdec_formats.h" | ||
| 24 | #include "libavutil/avstring.h" | ||
| 25 | |||
| 26 | ✗ | static int ilbc_parse_fmtp(AVFormatContext *s, | |
| 27 | AVStream *stream, PayloadContext *data, | ||
| 28 | const char *attr, const char *value) | ||
| 29 | { | ||
| 30 | ✗ | if (!strcmp(attr, "mode")) { | |
| 31 | ✗ | int mode = atoi(value); | |
| 32 | ✗ | switch (mode) { | |
| 33 | ✗ | case 20: | |
| 34 | ✗ | stream->codecpar->block_align = 38; | |
| 35 | ✗ | break; | |
| 36 | ✗ | case 30: | |
| 37 | ✗ | stream->codecpar->block_align = 50; | |
| 38 | ✗ | break; | |
| 39 | ✗ | default: | |
| 40 | ✗ | av_log(s, AV_LOG_ERROR, "Unsupported iLBC mode %d\n", mode); | |
| 41 | ✗ | return AVERROR(EINVAL); | |
| 42 | } | ||
| 43 | } | ||
| 44 | ✗ | return 0; | |
| 45 | } | ||
| 46 | |||
| 47 | ✗ | static int ilbc_parse_sdp_line(AVFormatContext *s, int st_index, | |
| 48 | PayloadContext *data, const char *line) | ||
| 49 | { | ||
| 50 | const char *p; | ||
| 51 | AVStream *st; | ||
| 52 | |||
| 53 | ✗ | if (st_index < 0) | |
| 54 | ✗ | return 0; | |
| 55 | ✗ | st = s->streams[st_index]; | |
| 56 | |||
| 57 | ✗ | if (av_strstart(line, "fmtp:", &p)) { | |
| 58 | ✗ | int ret = ff_parse_fmtp(s, st, data, p, ilbc_parse_fmtp); | |
| 59 | ✗ | if (ret < 0) | |
| 60 | ✗ | return ret; | |
| 61 | ✗ | if (!st->codecpar->block_align) { | |
| 62 | ✗ | av_log(s, AV_LOG_ERROR, "No iLBC mode set\n"); | |
| 63 | ✗ | return AVERROR(EINVAL); | |
| 64 | } | ||
| 65 | } | ||
| 66 | ✗ | return 0; | |
| 67 | } | ||
| 68 | |||
| 69 | const RTPDynamicProtocolHandler ff_ilbc_dynamic_handler = { | ||
| 70 | .enc_name = "iLBC", | ||
| 71 | .codec_type = AVMEDIA_TYPE_AUDIO, | ||
| 72 | .codec_id = AV_CODEC_ID_ILBC, | ||
| 73 | .parse_sdp_a_line = ilbc_parse_sdp_line, | ||
| 74 | }; | ||
| 75 |