FreeCalypso > hg > gsm-codec-lib
view libtwamr/prm2bits.c @ 469:7c50864deaff
amrts-pcm8-compact program written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 13 May 2024 21:06:58 +0000 |
parents | ffd48f0a2ab5 |
children |
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/* * A cleaner reimplementation of AMR Prm2bits() function. */ #include "typedef.h" #include "namespace.h" #include "bitno.h" #include "prm2bits.h" void Prm2bits(enum Mode mode, const Word16 prm[], Word16 bits[]) { const Word16 *t = bitno[mode]; unsigned nparam = prmno[mode]; unsigned n, p, mask; Word16 *b = bits; for (n = 0; n < nparam; n++) { p = prm[n]; mask = 1 << (*t++ - 1); for (; mask; mask >>= 1) { if (p & mask) *b++ = 1; else *b++ = 0; } } }