| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <unistd.h> |
| |
| #include <osmocom/core/bits.h> |
| #include <osmocom/isdn/v110.h> |
| #include <osmocom/gsm/gsm44021.h> |
| |
| |
| static void fill_v110_frame(struct osmo_v110_decoded_frame *fr) |
| { |
| unsigned int i; |
| |
| memset(fr, 0, sizeof(*fr)); |
| |
| /* we abuse the fact that ubit_t is 8bit so we can actually |
| * store integer values to clearly identify which bit ends up where */ |
| |
| /* D1..D48: 101..148 */ |
| for (i = 0; i < ARRAY_SIZE(fr->d_bits); i++) |
| fr->d_bits[i] = 101 + i; |
| /* E1..E7: 201..207 */ |
| for (i = 0; i < ARRAY_SIZE(fr->e_bits); i++) |
| fr->e_bits[i] = 201 + i; |
| /* S1..S9: 211..219 */ |
| for (i = 0; i < ARRAY_SIZE(fr->s_bits); i++) |
| fr->s_bits[i] = 211 + i; |
| /* X1..X2: 221..222 */ |
| for (i = 0; i < ARRAY_SIZE(fr->x_bits); i++) |
| fr->x_bits[i] = 221 + i; |
| } |
| |
| |
| static void test_frame_enc_12k_6k(void) |
| { |
| struct osmo_v110_decoded_frame fr; |
| ubit_t bits[60]; |
| |
| printf("Testing Frame Encoding for 12k/6k radio interface rate\n"); |
| |
| fill_v110_frame(&fr); |
| |
| /* run encoder and dump to stdout */ |
| memset(bits, 0xff, sizeof(bits)); |
| osmo_csd_12k_6k_encode_frame(bits, sizeof(bits), &fr); |
| osmo_csd_ubit_dump(stdout, bits, sizeof(bits)); |
| |
| /* run decoder on what we just encoded */ |
| memset(&fr, 0, sizeof(fr)); |
| osmo_csd_12k_6k_decode_frame(&fr, bits, sizeof(bits)); |
| |
| /* re-encode and dump again 'expout' will match it. */ |
| memset(bits, 0xff, sizeof(bits)); |
| osmo_csd_12k_6k_encode_frame(bits, sizeof(bits), &fr); |
| osmo_csd_ubit_dump(stdout, bits, sizeof(bits)); |
| } |
| |
| static void test_frame_enc_3k6(void) |
| { |
| struct osmo_v110_decoded_frame fr; |
| ubit_t bits[36]; |
| |
| printf("Testing Frame Encoding for 3.6k radio interface rate\n"); |
| |
| fill_v110_frame(&fr); |
| /* different D-bit numbering for 3k6, see TS 44.021 Section 8.1.4 */ |
| for (unsigned int i = 0; i < ARRAY_SIZE(fr.d_bits); i++) |
| fr.d_bits[i] = 101 + i/2; |
| |
| /* run encoder and dump to stdout */ |
| memset(bits, 0xff, sizeof(bits)); |
| osmo_csd_3k6_encode_frame(bits, sizeof(bits), &fr); |
| osmo_csd_ubit_dump(stdout, bits, sizeof(bits)); |
| |
| /* run decoder on what we just encoded */ |
| memset(&fr, 0, sizeof(fr)); |
| osmo_csd_3k6_decode_frame(&fr, bits, sizeof(bits)); |
| |
| /* re-encode and dump again 'expout' will match it. */ |
| memset(bits, 0xff, sizeof(bits)); |
| osmo_csd_3k6_encode_frame(bits, sizeof(bits), &fr); |
| osmo_csd_ubit_dump(stdout, bits, sizeof(bits)); |
| } |
| |
| |
| int main(int argc, char **argv) |
| { |
| test_frame_enc_12k_6k(); |
| printf("\n"); |
| test_frame_enc_3k6(); |
| } |
| |