Index: speex/libspeex/filters.h |
=================================================================== |
--- speex/libspeex/filters.h (revision 0) |
+++ speex/libspeex/filters.h (revision 0) |
@@ -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 |
Property changes on: speex/libspeex/filters.h |
___________________________________________________________________ |
Name: svn:executable |
+ * |