2 * The simplest mpeg audio layer 2 encoder
3 * Copyright (c) 2000, 2001 Fabrice Bellard
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
22 #include "libavutil/channel_layout.h"
24 #include "codec_internal.h"
25 #include "mpegaudioenc_template.c"
27 const FFCodec ff_mp2_encoder = {
29 .p.long_name = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
30 .p.type = AVMEDIA_TYPE_AUDIO,
31 .p.id = AV_CODEC_ID_MP2,
32 .priv_data_size = sizeof(MpegAudioContext),
33 .init = MPA_encode_init,
34 FF_CODEC_ENCODE_CB(MPA_encode_frame),
35 .p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
37 .p.supported_samplerates = (const int[]){
38 44100, 48000, 32000, 22050, 24000, 16000, 0
40 #if FF_API_OLD_CHANNEL_LAYOUT
41 .p.channel_layouts = (const uint64_t[]){ AV_CH_LAYOUT_MONO,
45 .p.ch_layouts = (const AVChannelLayout[]){ AV_CHANNEL_LAYOUT_MONO,
46 AV_CHANNEL_LAYOUT_STEREO,
48 .defaults = mp2_defaults,
49 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,