3 * Copyright (c) 2010 Mohamed Naufal Basheer
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
29 static const uint8_t frame_size[4] = {24, 20, 4, 1};
31 static int g723_1_init(AVFormatContext *s, AVFormatParameters *ap)
35 st = av_new_stream(s, 0);
37 return AVERROR(ENOMEM);
39 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
40 st->codec->codec_id = CODEC_ID_G723_1;
41 st->codec->channels = 1;
42 st->codec->sample_rate = 8000;
44 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
49 static int g723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
53 pkt->pos = url_ftell(s->pb);
54 byte = get_byte(s->pb);
55 size = frame_size[byte & 3];
57 ret = av_new_packet(pkt, size);
63 pkt->stream_index = 0;
65 ret = get_buffer(s->pb, pkt->data + 1, size - 1);
68 return ret < 0 ? ret : AVERROR_EOF;
74 AVInputFormat ff_g723_1_demuxer = {
76 NULL_IF_CONFIG_SMALL("G.723.1 format"),
81 .extensions = "tco,rco",
82 .flags = AVFMT_GENERIC_INDEX