FreeCalypso > hg > gsm-codec-lib
view amrconv/param_asm.c @ 277:37dc5c84bbe9
dev: generate RTP-packed GSM-FR DHF
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 14 Apr 2024 04:00:02 +0000 |
parents | 78d1a6513393 |
children |
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/* * This C module is common between amr-cod-parse and amr-ietf-parse * utilities. It contains the function that takes an array of bits * in the codec's natural order and reassembles these bits into * an array of codec parameters. */ #include <stdint.h> #include "amr_defs.h" /* parameter sizes (# of bits), one table per mode */ static const uint8_t bitno_MR475[PRMNO_MR475] = { 8, 8, 7, /* LSP VQ */ 8, 7, 2, 8, /* first subframe */ 4, 7, 2, /* second subframe */ 4, 7, 2, 8, /* third subframe */ 4, 7, 2, /* fourth subframe */ }; static const uint8_t bitno_MR515[PRMNO_MR515] = { 8, 8, 7, /* LSP VQ */ 8, 7, 2, 6, /* first subframe */ 4, 7, 2, 6, /* second subframe */ 4, 7, 2, 6, /* third subframe */ 4, 7, 2, 6, /* fourth subframe */ }; static const uint8_t bitno_MR59[PRMNO_MR59] = { 8, 9, 9, /* LSP VQ */ 8, 9, 2, 6, /* first subframe */ 4, 9, 2, 6, /* second subframe */ 8, 9, 2, 6, /* third subframe */ 4, 9, 2, 6, /* fourth subframe */ }; static const uint8_t bitno_MR67[PRMNO_MR67] = { 8, 9, 9, /* LSP VQ */ 8, 11, 3, 7, /* first subframe */ 4, 11, 3, 7, /* second subframe */ 8, 11, 3, 7, /* third subframe */ 4, 11, 3, 7, /* fourth subframe */ }; static const uint8_t bitno_MR74[PRMNO_MR74] = { 8, 9, 9, /* LSP VQ */ 8, 13, 4, 7, /* first subframe */ 5, 13, 4, 7, /* second subframe */ 8, 13, 4, 7, /* third subframe */ 5, 13, 4, 7, /* fourth subframe */ }; static const uint8_t bitno_MR795[PRMNO_MR795] = { 9, 9, 9, /* LSP VQ */ 8, 13, 4, 4, 5, /* first subframe */ 6, 13, 4, 4, 5, /* second subframe */ 8, 13, 4, 4, 5, /* third subframe */ 6, 13, 4, 4, 5, /* fourth subframe */ }; static const uint8_t bitno_MR102[PRMNO_MR102] = { 8, 9, 9, /* LSP VQ */ 8, 1, 1, 1, 1, 10, 10, 7, 7, /* first subframe */ 5, 1, 1, 1, 1, 10, 10, 7, 7, /* second subframe */ 8, 1, 1, 1, 1, 10, 10, 7, 7, /* third subframe */ 5, 1, 1, 1, 1, 10, 10, 7, 7, /* fourth subframe */ }; static const uint8_t bitno_MR122[PRMNO_MR122] = { 7, 8, 9, 8, 6, /* LSP VQ */ 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* first subframe */ 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* second subframe */ 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* third subframe */ 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5 /* fourth subframe */ }; static const uint8_t bitno_MRDTX[PRMNO_MRDTX] = { 3, 8, 9, 9, 6 }; static void bits_to_params(bits, params, table, nparam) const uint8_t *bits; uint16_t *params; const uint8_t *table; unsigned nparam; { const uint8_t *p = bits; const uint8_t *t = table; unsigned n, m, acc; for (n = 0; n < nparam; n++) { acc = 0; for (m = 0; m < *t; m++) { acc <<= 1; if (*p) acc |= 1; p++; } params[n] = acc; t++; } } reassemble_amr_params(bits, params, mode) const uint8_t *bits; uint16_t *params; unsigned mode; { switch (mode) { case MR475: bits_to_params(bits, params, bitno_MR475, PRMNO_MR475); return(0); case MR515: bits_to_params(bits, params, bitno_MR515, PRMNO_MR515); return(0); case MR59: bits_to_params(bits, params, bitno_MR59, PRMNO_MR59); return(0); case MR67: bits_to_params(bits, params, bitno_MR67, PRMNO_MR67); return(0); case MR74: bits_to_params(bits, params, bitno_MR74, PRMNO_MR74); return(0); case MR795: bits_to_params(bits, params, bitno_MR795, PRMNO_MR795); return(0); case MR102: bits_to_params(bits, params, bitno_MR102, PRMNO_MR102); return(0); case MR122: bits_to_params(bits, params, bitno_MR122, PRMNO_MR122); return(0); case MRDTX: bits_to_params(bits, params, bitno_MRDTX, PRMNO_MRDTX); return(0); default: return(-1); } }