FFmpeg
libavcodec
opusenc.h
Go to the documentation of this file.
1
/*
2
* Opus encoder
3
* Copyright (c) 2017 Rostislav Pehlivanov <atomnuker@gmail.com>
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
#ifndef AVCODEC_OPUSENC_H
23
#define AVCODEC_OPUSENC_H
24
25
#include "
libavutil/intmath.h
"
26
#include "
opus.h
"
27
28
/* Determines the maximum delay the psychoacoustic system will use for lookahead */
29
#define FF_BUFQUEUE_SIZE 145
30
#include "
libavfilter/bufferqueue.h
"
31
32
#define OPUS_MAX_LOOKAHEAD ((FF_BUFQUEUE_SIZE - 1)*2.5f)
33
34
#define OPUS_MAX_CHANNELS 2
35
36
/* 120 ms / 2.5 ms = 48 frames (extremely improbable, but the encoder'll work) */
37
#define OPUS_MAX_FRAMES_PER_PACKET 48
38
39
#define OPUS_BLOCK_SIZE(x) (2 * 15 * (1 << ((x) + 2)))
40
41
#define OPUS_SAMPLES_TO_BLOCK_SIZE(x) (ff_log2((x) / (2 * 15)) - 2)
42
43
typedef
struct
OpusEncOptions
{
44
float
max_delay_ms
;
45
int
apply_phase_inv
;
46
}
OpusEncOptions
;
47
48
typedef
struct
OpusPacketInfo
{
49
enum
OpusMode
mode
;
50
enum
OpusBandwidth
bandwidth
;
51
int
framesize
;
52
int
frames
;
53
}
OpusPacketInfo
;
54
55
#endif
/* AVCODEC_OPUSENC_H */
OpusEncOptions::max_delay_ms
float max_delay_ms
Definition:
opusenc.h:44
OpusPacketInfo::frames
int frames
Definition:
opusenc.h:52
OpusPacketInfo::bandwidth
enum OpusBandwidth bandwidth
Definition:
opusenc.h:50
OpusMode
OpusMode
Definition:
opus.h:41
opus.h
OpusPacketInfo::mode
enum OpusMode mode
Definition:
opusenc.h:49
OpusPacketInfo
Definition:
opusenc.h:48
bufferqueue.h
OpusEncOptions::apply_phase_inv
int apply_phase_inv
Definition:
opusenc.h:45
OpusPacketInfo::framesize
int framesize
Definition:
opusenc.h:51
OpusEncOptions
Definition:
opusenc.h:43
OpusBandwidth
OpusBandwidth
Definition:
opus.h:49
intmath.h
Generated on Thu Apr 18 2024 22:42:05 for FFmpeg by
1.8.17