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Diffstat (limited to 'src/libspeex/cb_search.h')
| -rw-r--r-- | src/libspeex/cb_search.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/libspeex/cb_search.h b/src/libspeex/cb_search.h new file mode 100644 index 00000000..7687b453 --- /dev/null +++ b/src/libspeex/cb_search.h @@ -0,0 +1,103 @@ +/* Copyright (C) 2002 Jean-Marc Valin & David Rowe */ +/** + @file cb_search.h + @brief Overlapped codebook search +*/ +/* + 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 CB_SEARCH_H +#define CB_SEARCH_H + +#include <speex/speex_bits.h> +#include "arch.h" + +/** Split codebook parameters. */ +typedef struct split_cb_params { + int subvect_size; + int nb_subvect; + const signed char *shape_cb; + int shape_bits; + int have_sign; +} split_cb_params; + + +void split_cb_search_shape_sign( +spx_word16_t target[], /* target vector */ +spx_coef_t ak[], /* LPCs for this subframe */ +spx_coef_t awk1[], /* Weighted LPCs for this subframe */ +spx_coef_t awk2[], /* Weighted LPCs for this subframe */ +const void *par, /* Codebook/search parameters */ +int p, /* number of LPC coeffs */ +int nsf, /* number of samples in subframe */ +spx_sig_t *exc, +spx_word16_t *r, +SpeexBits *bits, +char *stack, +int complexity, +int update_target +); + +void split_cb_shape_sign_unquant( +spx_sig_t *exc, +const void *par, /* non-overlapping codebook */ +int nsf, /* number of samples in subframe */ +SpeexBits *bits, +char *stack, +spx_int32_t *seed +); + + +void noise_codebook_quant( +spx_word16_t target[], /* target vector */ +spx_coef_t ak[], /* LPCs for this subframe */ +spx_coef_t awk1[], /* Weighted LPCs for this subframe */ +spx_coef_t awk2[], /* Weighted LPCs for this subframe */ +const void *par, /* Codebook/search parameters */ +int p, /* number of LPC coeffs */ +int nsf, /* number of samples in subframe */ +spx_sig_t *exc, +spx_word16_t *r, +SpeexBits *bits, +char *stack, +int complexity, +int update_target +); + + +void noise_codebook_unquant( +spx_sig_t *exc, +const void *par, /* non-overlapping codebook */ +int nsf, /* number of samples in subframe */ +SpeexBits *bits, +char *stack, +spx_int32_t *seed +); + +#endif |