FreeCalypso > hg > gsm-codec-lib
annotate dev/efr-bit-packing.c @ 99:7152cc7d1ca3
libgsmefr: implement EFR_decode_bfi_nodata()
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 26 Nov 2022 21:51:52 +0000 |
parents | 9639a44ae2e7 |
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rev | line source |
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dev: efr-bit-packing helper program
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
9639a44ae2e7
dev: efr-bit-packing helper program
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2 * We would like to generate our EFR RTP frame packing and unpacking code |
9639a44ae2e7
dev: efr-bit-packing helper program
Mychaela Falconia <falcon@freecalypso.org>
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3 * using bitter and sweet utilities from libgsm, so we'll end up packing |
9639a44ae2e7
dev: efr-bit-packing helper program
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4 * and unpacking EFR just like good old FR. However, because of our |
9639a44ae2e7
dev: efr-bit-packing helper program
Mychaela Falconia <falcon@freecalypso.org>
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5 * slightly different approach, entering the spec file for bitter and sweet |
9639a44ae2e7
dev: efr-bit-packing helper program
Mychaela Falconia <falcon@freecalypso.org>
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6 * manually would be tedious and error-prone, hence we are going to |
9639a44ae2e7
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7 * generate it with this program. |
9639a44ae2e7
dev: efr-bit-packing helper program
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8 */ |
9639a44ae2e7
dev: efr-bit-packing helper program
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9 |
9639a44ae2e7
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10 #include <stdio.h> |
9639a44ae2e7
dev: efr-bit-packing helper program
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11 #include <stdlib.h> |
9639a44ae2e7
dev: efr-bit-packing helper program
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12 |
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13 #define PRM_NO 57 |
9639a44ae2e7
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14 |
9639a44ae2e7
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15 /* table from ETSI EFR code */ |
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16 static const unsigned bitno[PRM_NO] = |
9639a44ae2e7
dev: efr-bit-packing helper program
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17 { |
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18 7, 8, 9, 8, 6, /* LSP VQ */ |
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19 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* first subframe */ |
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20 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* second subframe */ |
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21 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* third subframe */ |
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22 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5 /* fourth subframe */ |
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23 }; |
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24 |
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25 main(argc, argv) |
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26 char **argv; |
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27 { |
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28 unsigned n; |
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29 |
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30 printf("EFR_MAGIC\t4\n"); |
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31 for (n = 0; n < PRM_NO; n++) |
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32 printf("params[%u]\t%u\n", n, bitno[n]); |
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33 exit(0); |
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34 } |