57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
/* (C) 2007 Jean-Marc Valin, CSIRO
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PSY_H
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#define PSY_H
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#include "arch.h"
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#include "celt.h"
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struct PsyDecay {
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/*celt_word16_t *decayL;*/
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const celt_word16_t * restrict decayR;
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};
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/** Pre-compute the decay of the psycho-acoustic spreading function */
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void psydecay_init(struct PsyDecay *decay, int len, celt_int32_t Fs);
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/** Free the memory allocated for the spreading function */
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void psydecay_clear(struct PsyDecay *decay);
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/** Compute the masking curve for an input (DFT) spectrum X */
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void compute_masking(const struct PsyDecay *decay, celt_word16_t *X, celt_mask_t *mask, int len);
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/** Compute the masking curve for an input (MDCT) spectrum X */
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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);
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void compute_tonality(const CELTMode *m, celt_word16_t * restrict X, celt_word16_t * mem, int len, celt_word16_t *tonality, int mdct_size);
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#endif /* PSY_H */
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