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/* Copyright (c) 2022 Amazon
Written by Jan Buethe */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DRED_ENCODER_H
#define DRED_ENCODER_H
#include "lpcnet.h"
#include "dred_config.h"
#include "dred_rdovae.h"
#include "entcode.h"
#include "lpcnet_private.h"
#include "dred_rdovae_enc.h"
#include "dred_rdovae_enc_data.h"
#define RESAMPLING_ORDER 8
typedef struct {
RDOVAEEnc model;
LPCNetEncState lpcnet_enc_state;
RDOVAEEncState rdovae_enc;
int loaded;
opus_int32 Fs;
int channels;
#define DREDENC_RESET_START input_buffer
float input_buffer[2*DRED_DFRAME_SIZE];
int input_buffer_fill;
int dred_offset;
int latent_offset;
float latents_buffer[DRED_MAX_FRAMES * DRED_LATENT_DIM];
int latents_buffer_fill;
float state_buffer[DRED_STATE_DIM];
float initial_state[DRED_STATE_DIM];
float resample_mem[RESAMPLING_ORDER + 1];
} DREDEnc;
int dred_encoder_load_model(DREDEnc* enc, const unsigned char *data, int len);
void dred_encoder_init(DREDEnc* enc, opus_int32 Fs, int channels);
void dred_encoder_reset(DREDEnc* enc);
void dred_deinit_encoder(DREDEnc *enc);
void dred_compute_latents(DREDEnc *enc, const float *pcm, int frame_size, int extra_delay, int arch);
int dred_encode_silk_frame(const DREDEnc *enc, unsigned char *buf, int max_chunks, int max_bytes, int arch);
#endif
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