FreeCalypso > hg > vband-misc
comparison pcmu2efr/comb-diff.c @ 21:3eb407b08b4c
pcmu2efr: confirm that we got 280 distinct outputs so far
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 12 May 2024 03:15:23 +0000 |
| parents | pcmu2efr/stdefr-diff.c@39b3c24256ae |
| children | 2628a34fe75b |
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| 20:f5f541bc9415 | 21:3eb407b08b4c |
|---|---|
| 1 /* | |
| 2 * This program computes 160 possible EFR encoder outputs using standard EFR, | |
| 3 * then 120 possible outputs using "simple" AMR-EFR, then does a diff | |
| 4 * among them, seeking to verify that they are all distinct. | |
| 5 */ | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 #include <stdint.h> | |
| 9 #include <stdlib.h> | |
| 10 #include <string.h> | |
| 11 #include <strings.h> | |
| 12 | |
| 13 extern uint8_t standard_efr[160][31]; | |
| 14 extern uint8_t amr_efr[160][31]; | |
| 15 | |
| 16 main(argc, argv) | |
| 17 char **argv; | |
| 18 { | |
| 19 uint8_t combine[320][31]; | |
| 20 unsigned m, n; | |
| 21 | |
| 22 generate_linear_inputs(); | |
| 23 generate_std_efr(); | |
| 24 generate_amr_efr(); | |
| 25 bcopy(standard_efr, combine, 160*31); | |
| 26 bcopy(amr_efr, combine + 160, 160*31); | |
| 27 for (m = 0; m < 279; m++) { | |
| 28 for (n = m + 1; n < 280; n++) { | |
| 29 if (!memcmp(combine[m], combine[n], 31)) | |
| 30 printf("Bad: sequences #%u and #%u are equal\n", | |
| 31 m, n); | |
| 32 } | |
| 33 } | |
| 34 exit(0); | |
| 35 } |
