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/* Copyright (C) 2002-2006 Jean-Marc Valin */
/**
@file sb_celp.h
@brief Sub-band CELP mode used for wideband encoding
*/
/*
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.
- Neither the name of the Xiph.org Foundation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
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 FOUNDATION 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 SB_CELP_H
#define SB_CELP_H
#include "modes.h"
#include <speex/speex_bits.h>
#include "nb_celp.h"
/**Structure representing the full state of the sub-band encoder*/
typedef struct SBEncState {
const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */
void *st_low; /**< State of the low-band (narrowband) encoder */
int full_frame_size; /**< Length of full-band frames*/
int frame_size; /**< Length of high-band frames*/
int subframeSize; /**< Length of high-band sub-frames*/
int nbSubframes; /**< Number of high-band sub-frames*/
int windowSize; /**< Length of high-band LPC window*/
int lpcSize; /**< Order of high-band LPC analysis */
int first; /**< First frame? */
spx_word16_t lpc_floor; /**< Controls LPC analysis noise floor */
spx_word16_t gamma1; /**< Perceptual weighting coef 1 */
spx_word16_t gamma2; /**< Perceptual weighting coef 2 */
char *stack; /**< Temporary allocation stack */
spx_word16_t *high; /**< High-band signal (buffer) */
spx_word16_t *h0_mem, *h1_mem;
const spx_word16_t *window; /**< LPC analysis window */
const spx_word16_t *lagWindow; /**< Auto-correlation window */
spx_lsp_t *old_lsp; /**< LSPs of previous frame */
spx_lsp_t *old_qlsp; /**< Quantized LSPs of previous frame */
spx_coef_t *interp_qlpc; /**< Interpolated quantized LPCs for current sub-frame */
spx_mem_t *mem_sp; /**< Synthesis signal memory */
spx_mem_t *mem_sp2;
spx_mem_t *mem_sw; /**< Perceptual signal memory */
spx_word32_t *pi_gain;
spx_word16_t *exc_rms;
spx_word16_t *innov_rms_save; /**< If non-NULL, innovation is copied here */
#ifndef DISABLE_VBR
float vbr_quality; /**< Quality setting for VBR encoding */
int vbr_enabled; /**< 1 for enabling VBR, 0 otherwise */
spx_int32_t vbr_max; /**< Max bit-rate allowed in VBR mode (total) */
spx_int32_t vbr_max_high; /**< Max bit-rate allowed in VBR mode for the high-band */
spx_int32_t abr_enabled; /**< ABR setting (in bps), 0 if off */
float abr_drift;
float abr_drift2;
float abr_count;
int vad_enabled; /**< 1 for enabling VAD, 0 otherwise */
float relative_quality;
#endif /* #ifndef DISABLE_VBR */
int encode_submode;
const SpeexSubmode * const *submodes;
int submodeID;
int submodeSelect;
int complexity;
spx_int32_t sampling_rate;
} SBEncState;
/**Structure representing the full state of the sub-band decoder*/
typedef struct SBDecState {
const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */
void *st_low; /**< State of the low-band (narrowband) encoder */
int full_frame_size;
int frame_size;
int subframeSize;
int nbSubframes;
int lpcSize;
int first;
spx_int32_t sampling_rate;
int lpc_enh_enabled;
char *stack;
spx_word16_t *g0_mem, *g1_mem;
spx_word16_t *excBuf;
spx_lsp_t *old_qlsp;
spx_coef_t *interp_qlpc;
spx_mem_t *mem_sp;
spx_word32_t *pi_gain;
spx_word16_t *exc_rms;
spx_word16_t *innov_save; /** If non-NULL, innovation is copied here */
spx_word16_t last_ener;
spx_int32_t seed;
int encode_submode;
const SpeexSubmode * const *submodes;
int submodeID;
} SBDecState;
/**Initializes encoder state*/
void *sb_encoder_init(const SpeexMode *m);
/**De-allocates encoder state resources*/
void sb_encoder_destroy(void *state);
/**Encodes one frame*/
int sb_encode(void *state, void *in, SpeexBits *bits);
/**Initializes decoder state*/
void *sb_decoder_init(const SpeexMode *m);
/**De-allocates decoder state resources*/
void sb_decoder_destroy(void *state);
/**Decodes one frame*/
int sb_decode(void *state, SpeexBits *bits, void *out);
int sb_encoder_ctl(void *state, int request, void *ptr);
int sb_decoder_ctl(void *state, int request, void *ptr);
#endif
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