34 lines
1.4 KiB
C
34 lines
1.4 KiB
C
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/*
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*===================================================================
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* 3GPP AMR Wideband Floating-point Speech Codec
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*===================================================================
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*/
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#ifndef DEC_UTIL_H
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#define DEC_UTIL_H
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#include "typedef.h"
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#include "dec_main.h"
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Word16 D_UTIL_random(Word16 *seed);
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Word32 D_UTIL_pow2(Word16 exponant, Word16 fraction);
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Word16 D_UTIL_norm_l (Word32 L_var1);
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Word16 D_UTIL_norm_s (Word16 var1);
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Word32 D_UTIL_dot_product12(Word16 x[], Word16 y[], Word16 lg, Word16 *exp);
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void D_UTIL_normalised_inverse_sqrt(Word32 *frac, Word16 *exp);
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Word32 D_UTIL_inverse_sqrt(Word32 L_x);
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void D_UTIL_log2(Word32 L_x, Word16 *exponent, Word16 *fraction);
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void D_UTIL_l_extract(Word32 L_32, Word16 *hi, Word16 *lo);
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Word32 D_UTIL_mpy_32_16 (Word16 hi, Word16 lo, Word16 n);
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Word32 D_UTIL_mpy_32 (Word16 hi1, Word16 lo1, Word16 hi2, Word16 lo2);
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Word16 D_UTIL_saturate(Word32 inp);
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void D_UTIL_signal_up_scale(Word16 x[], Word16 lg, Word16 exp);
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void D_UTIL_signal_down_scale(Word16 x[], Word16 lg, Word16 exp);
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void D_UTIL_dec_synthesis(Word16 Aq[], Word16 exc[], Word16 Q_new,
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Word16 synth16k[], Word16 prms, Word16 HfIsf[],
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Word16 mode, Word16 newDTXState, Word16 bfi,
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Decoder_State *st);
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void D_UTIL_preemph(Word16 x[], Word16 mu, Word16 lg, Word16 *mem);
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#endif
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