mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
|
|
* Opus encoder
|
|
* Copyright (c) 2017 Rostislav Pehlivanov <atomnuker@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_OPUSENC_H
|
|
#define AVCODEC_OPUSENC_H
|
|
|
|
#include "opus_celt.h"
|
|
|
|
/* Determines the maximum delay the psychoacoustic system will use for lookahead */
|
|
#define FF_BUFQUEUE_SIZE 145
|
|
#include "libavfilter/bufferqueue.h"
|
|
|
|
#define OPUS_MAX_LOOKAHEAD ((FF_BUFQUEUE_SIZE - 1)*2.5f)
|
|
|
|
#define OPUS_MAX_CHANNELS 2
|
|
|
|
/* 120 ms / 2.5 ms = 48 frames (extremely improbable, but the encoder'll work) */
|
|
#define OPUS_MAX_FRAMES_PER_PACKET 48
|
|
|
|
#define OPUS_BLOCK_SIZE(x) (2 * 15 * (1 << ((x) + 2)))
|
|
|
|
#define OPUS_SAMPLES_TO_BLOCK_SIZE(x) (ff_log2((x) / (2 * 15)) - 2)
|
|
|
|
typedef struct OpusEncOptions {
|
|
float max_delay_ms;
|
|
int apply_phase_inv;
|
|
} OpusEncOptions;
|
|
|
|
typedef struct OpusPacketInfo {
|
|
enum OpusMode mode;
|
|
enum OpusBandwidth bandwidth;
|
|
int framesize;
|
|
int frames;
|
|
} OpusPacketInfo;
|
|
|
|
#endif /* AVCODEC_OPUSENC_H */
|