/*
  * 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 "internal.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;
 } OpusEncOptions;
 
 typedef struct OpusPacketInfo {
     enum OpusMode mode;
     enum OpusBandwidth bandwidth;
     int framesize;
     int frames;
 } OpusPacketInfo;
 
 void ff_celt_enc_bitalloc(OpusRangeCoder *rc, CeltFrame *f);
 
 #endif /* AVCODEC_OPUSENC_H */