FFmpeg
mpegaudioenc_float.c
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1 /*
2  * The simplest mpeg audio layer 2 encoder
3  * Copyright (c) 2000, 2001 Fabrice Bellard
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 
23 #define USE_FLOATS 1
24 #include "codec_internal.h"
25 #include "mpegaudioenc_template.c"
26 
28  .p.name = "mp2",
29  CODEC_LONG_NAME("MP2 (MPEG audio layer 2)"),
30  .p.type = AVMEDIA_TYPE_AUDIO,
31  .p.id = AV_CODEC_ID_MP2,
33  .priv_data_size = sizeof(MpegAudioContext),
36  .p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
38  .p.supported_samplerates = (const int[]){
39  44100, 48000, 32000, 22050, 24000, 16000, 0
40  },
42  .p.ch_layouts = (const AVChannelLayout[]){ AV_CHANNEL_LAYOUT_MONO,
44  { 0 } },
45  .defaults = mp2_defaults,
46 };
AV_CHANNEL_LAYOUT_STEREO
#define AV_CHANNEL_LAYOUT_STEREO
Definition: channel_layout.h:369
mp2_defaults
static const FFCodecDefault mp2_defaults[]
Definition: mpegaudioenc_template.c:777
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:210
FFCodec
Definition: codec_internal.h:127
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
FF_CODEC_ENCODE_CB
#define FF_CODEC_ENCODE_CB(func)
Definition: codec_internal.h:315
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:211
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AV_CODEC_ID_MP2
@ AV_CODEC_ID_MP2
Definition: codec_id.h:438
mpegaudioenc_template.c
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE
#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE
This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...
Definition: codec.h:156
CODEC_OLD_CHANNEL_LAYOUTS
#define CODEC_OLD_CHANNEL_LAYOUTS(...)
Definition: codec_internal.h:302
MPA_encode_frame
static int MPA_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: mpegaudioenc_template.c:737
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVChannelLayout
An AVChannelLayout holds information about the channel layout of audio data.
Definition: channel_layout.h:301
codec_internal.h
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:56
ff_mp2_encoder
const FFCodec ff_mp2_encoder
Definition: mpegaudioenc_float.c:27
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:55
AV_SAMPLE_FMT_S16
@ AV_SAMPLE_FMT_S16
signed 16 bits
Definition: samplefmt.h:58
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:191
MPA_encode_init
static av_cold int MPA_encode_init(AVCodecContext *avctx)
Definition: mpegaudioenc_template.c:76
MpegAudioContext
Definition: mpegaudioenc_template.c:47
channel_layout.h
AV_CHANNEL_LAYOUT_MONO
#define AV_CHANNEL_LAYOUT_MONO
Definition: channel_layout.h:368