Harald Welte | 065dab8 | 2022-11-29 23:13:06 +0100 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <stdint.h> |
| 4 | #include <unistd.h> |
| 5 | |
| 6 | #include <osmocom/core/bits.h> |
| 7 | #include <osmocom/isdn/v110.h> |
| 8 | |
| 9 | |
| 10 | static void test_ra1(enum osmo_v100_sync_ra1_rate rate) |
| 11 | { |
| 12 | int user_rate = osmo_v110_sync_ra1_get_user_data_rate(rate); |
Vadim Yanitskiy | 8f6d2f3 | 2023-03-17 16:35:51 +0700 | [diff] [blame] | 13 | int user_data_chunk_bits; |
Harald Welte | 065dab8 | 2022-11-29 23:13:06 +0100 | [diff] [blame] | 14 | struct osmo_v110_decoded_frame fr; |
| 15 | ubit_t user_bits[48]; |
| 16 | ubit_t bits[80]; |
| 17 | unsigned int i; |
| 18 | int rc; |
| 19 | |
| 20 | printf("\n======= User data rate %u\n", user_rate); |
| 21 | |
Vadim Yanitskiy | 8f6d2f3 | 2023-03-17 16:35:51 +0700 | [diff] [blame] | 22 | user_data_chunk_bits = osmo_v110_sync_ra1_get_user_data_chunk_bitlen(rate); |
| 23 | OSMO_ASSERT(user_data_chunk_bits >= 0); |
| 24 | |
Harald Welte | 065dab8 | 2022-11-29 23:13:06 +0100 | [diff] [blame] | 25 | /* we abuse the fact that ubit_t is 8bit so we can actually |
| 26 | * store integer values to clearly identify which bit ends up where */ |
| 27 | memset(user_bits, 0xFE, sizeof(user_bits)); |
| 28 | for (i = 0; i < user_data_chunk_bits; i++) |
| 29 | user_bits[i] = 101 + i; |
| 30 | |
| 31 | printf("user_bits: "); |
| 32 | for (i = 0; i < user_data_chunk_bits; i++) |
| 33 | printf("%03d ", user_bits[i]); |
| 34 | printf("\n"); |
| 35 | |
| 36 | /* generate the decoded v.110 frame */ |
| 37 | memset(&fr, 0, sizeof(fr)); |
| 38 | rc = osmo_v110_sync_ra1_user_to_ir(rate, &fr, user_bits, user_data_chunk_bits); |
| 39 | OSMO_ASSERT(rc == 0); |
| 40 | |
| 41 | /* run encoder and dump to stdout */ |
| 42 | memset(bits, 0xff, sizeof(bits)); |
| 43 | osmo_v110_encode_frame(bits, sizeof(bits), &fr); |
| 44 | printf("dumping %u encoded bits in V.110 frame:\n", user_data_chunk_bits); |
| 45 | osmo_v110_ubit_dump(stdout, bits, sizeof(bits)); |
| 46 | |
| 47 | /* run decoder on what we just encoded */ |
| 48 | memset(&fr, 0, sizeof(fr)); |
| 49 | osmo_v110_decode_frame(&fr, bits, sizeof(bits)); |
| 50 | printf("dumping re-decoded V.110 frame:\n"); |
| 51 | printf("E-bits: %s\n", osmo_hexdump(fr.e_bits, sizeof(fr.e_bits))); |
| 52 | printf("S-bits: %s\n", osmo_hexdump(fr.s_bits, sizeof(fr.s_bits))); |
| 53 | |
| 54 | /* re-encode and dump again 'expout' will match it. */ |
| 55 | memset(user_bits, 0xff, sizeof(user_bits)); |
| 56 | rc = osmo_v110_sync_ra1_ir_to_user(rate, user_bits, sizeof(user_bits), &fr); |
| 57 | if (rc != user_data_chunk_bits) { |
| 58 | fprintf(stderr, "ERROR: adapt_ir_to_user() returned %d, expected %u\n", rc, |
| 59 | user_data_chunk_bits); |
| 60 | exit(23); |
| 61 | } |
| 62 | fprintf(stdout, "re-decoded user bits: "); |
| 63 | for (i = 0; i < user_data_chunk_bits; i++) |
| 64 | printf("%03d ", user_bits[i]); |
| 65 | printf("\n"); |
| 66 | } |
| 67 | |
| 68 | |
| 69 | int main(int argc, char **argv) |
| 70 | { |
| 71 | for (int i = 0; i < _NUM_OSMO_V110_SYNC_RA1; i++) |
| 72 | test_ra1(i); |
| 73 | } |
| 74 | |