155 lines
5.7 KiB
C
155 lines
5.7 KiB
C
/* 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 "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;
|
|
|
|
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
|