From beaa7b7491e6deccd6c49abc375702e23aa4324a Mon Sep 17 00:00:00 2001 From: Nanang Izzuddin Date: Tue, 10 Jun 2008 14:09:37 +0000 Subject: Upgraded Speex version to the latest and reorganized it in local copy (since Speex is now using Git) git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@2002 74dad513-b988-da41-8d7b-12977e46ad98 --- third_party/speex/libspeex/filters.h | 90 ++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 third_party/speex/libspeex/filters.h (limited to 'third_party/speex/libspeex/filters.h') diff --git a/third_party/speex/libspeex/filters.h b/third_party/speex/libspeex/filters.h new file mode 100644 index 00000000..e3a5980e --- /dev/null +++ b/third_party/speex/libspeex/filters.h @@ -0,0 +1,90 @@ +/* Copyright (C) 2002 Jean-Marc Valin */ +/** + @file filters.h + @brief Various analysis/synthesis filters +*/ +/* + 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 FILTERS_H +#define FILTERS_H + +#include "arch.h" + +spx_word16_t compute_rms(const spx_sig_t *x, int len); +spx_word16_t compute_rms16(const spx_word16_t *x, int len); +void signal_mul(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len); +void signal_div(const spx_word16_t *x, spx_word16_t *y, spx_word32_t scale, int len); + +#ifdef FIXED_POINT + +int normalize16(const spx_sig_t *x, spx_word16_t *y, spx_sig_t max_scale, int len); + +#endif + + +#define HIGHPASS_NARROWBAND 0 +#define HIGHPASS_WIDEBAND 2 +#define HIGHPASS_INPUT 0 +#define HIGHPASS_OUTPUT 1 +#define HIGHPASS_IRS 4 + +void highpass(const spx_word16_t *x, spx_word16_t *y, int len, int filtID, spx_mem_t *mem); + + +void qmf_decomp(const spx_word16_t *xx, const spx_word16_t *aa, spx_word16_t *, spx_word16_t *y2, int N, int M, spx_word16_t *mem, char *stack); +void qmf_synth(const spx_word16_t *x1, const spx_word16_t *x2, const spx_word16_t *a, spx_word16_t *y, int N, int M, spx_word16_t *mem1, spx_word16_t *mem2, char *stack); + +void filter_mem16(const spx_word16_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack); +void iir_mem16(const spx_word16_t *x, const spx_coef_t *den, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack); +void fir_mem16(const spx_word16_t *x, const spx_coef_t *num, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack); + +/* Apply bandwidth expansion on LPC coef */ +void bw_lpc(spx_word16_t , const spx_coef_t *lpc_in, spx_coef_t *lpc_out, int order); +void sanitize_values32(spx_word32_t *vec, spx_word32_t min_val, spx_word32_t max_val, int len); + + +void syn_percep_zero16(const spx_word16_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack); +void residue_percep_zero16(const spx_word16_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack); + +void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack); + +void multicomb( +spx_word16_t *exc, /*decoded excitation*/ +spx_word16_t *new_exc, /*enhanced excitation*/ +spx_coef_t *ak, /*LPC filter coefs*/ +int p, /*LPC order*/ +int nsf, /*sub-frame size*/ +int pitch, /*pitch period*/ +int max_pitch, /*pitch gain (3-tap)*/ +spx_word16_t comb_gain, /*gain of comb filter*/ +char *stack +); + +#endif -- cgit v1.2.3