chore(fmod): add files from Chensne/DragonNest

lib/libcelt/psy.h

@@ -0,0 +1,56 @@
+/* (C) 2007 Jean-Marc Valin, CSIRO
+*/
+/*
+   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 PSY_H
+#define PSY_H
+
+#include "arch.h"
+#include "celt.h"
+
+struct PsyDecay {
+   /*celt_word16_t *decayL;*/
+   const celt_word16_t * celt_restrict decayR;
+};
+
+/** Pre-compute the decay of the psycho-acoustic spreading function */
+void psydecay_init(struct PsyDecay *decay, int len, celt_int32_t Fs);
+
+/** Free the memory allocated for the spreading function */
+void psydecay_clear(struct PsyDecay *decay);
+
+/** Compute the masking curve for an input (DFT) spectrum X */
+void compute_masking(const struct PsyDecay *decay, celt_word16_t *X, celt_mask_t * celt_restrict mask, int len);
+
+/** Compute the masking curve for an input (MDCT) spectrum X */
+void compute_mdct_masking(const struct PsyDecay *decay, celt_word32_t *X, celt_word16_t *tonality, celt_word16_t *long_window, celt_mask_t *mask, int len);
+
+void compute_tonality(const CELTMode *m, celt_word16_t * celt_restrict X, celt_word16_t * mem, int len, celt_word16_t *tonality, int mdct_size);
+
+#endif /* PSY_H */