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Unified Diff: speex/libspeex/lpc.h

Issue 3119024: Add speex to trunk/deps/third_party/.... (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/
Patch Set: Created 10 years, 4 months ago
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Index: speex/libspeex/lpc.h
===================================================================
--- speex/libspeex/lpc.h (revision 0)
+++ speex/libspeex/lpc.h (revision 0)
@@ -0,0 +1,53 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+ @file lpc.h
+ @brief Functions for LPC (Linear Prediction Coefficients) analysis
+*/
+/*
+ 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 LPC_H
+#define LPC_H
+
+#include "arch.h"
+
+void _spx_autocorr(
+ const spx_word16_t * x, /* in: [0...n-1] samples x */
+ spx_word16_t *ac, /* out: [0...lag-1] ac values */
+ int lag, int n);
+
+spx_word32_t /* returns minimum mean square error */
+_spx_lpc(
+ spx_coef_t * lpc, /* [0...p-1] LPC coefficients */
+ const spx_word16_t * ac, /* in: [0...p] autocorrelation values */
+ int p
+ );
+
+
+#endif
Property changes on: speex/libspeex/lpc.h
___________________________________________________________________
Name: svn:executable
+ *
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