| Philipp Maier | 40def49 | 2017-12-16 03:42:15 +0700 | [diff] [blame^] | 1 | #include <stdio.h> |
| 2 | #include <stdint.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include <osmocom/core/bitvec.h> |
| 6 | #include <osmocom/core/utils.h> |
| 7 | |
| 8 | #include <osmocom/codec/codec.h> |
| 9 | #include <osmocom/codec/ecu.h> |
| 10 | |
| 11 | /* Set with sample full-rate voice frames and some intentional dropouts */ |
| 12 | static const char *fr_frames_hex[] = { |
| 13 | "d9aa93ae63de00471a91b95b8660471392b4a2daa037628f391c624039258dc723", |
| 14 | "d8eb83699a66c036ec89b7246e6034dc8d48948620589b7256e3a6603b2371b8da", |
| 15 | "d967abaa1cbe4035238da6ace4c036d46ec69ba600391c4eb8a2b040591c6a3924", |
| 16 | "d8e8a42662c240472469b91bd2e0452291b6dba600495b8e38dcb020491a71c91b", |
| 17 | "da2aac1ddbb00036e46e26dcec6039138db923822047137248e3560048e38dc8e3", |
| 18 | "d929ab2a9b5240395b6dc72ba020469c8d551c5440349c9148e36a4036a372471b", |
| 19 | "d9eb93215bb8a0271c69c724682036db71c71a94a0372491b72bee4044eb71b923", |
| 20 | "d9ab9aa19abc40391b6e5ae2ee40471b91c6dbe820492291b8e4b84036e47238db", |
| 21 | "d96b9be9db782044e371b55cb200389491c69b8ea034e271c8d3808038ec6db8e3", |
| 22 | "d9aa9365e3f060375c6db6ebc4c02764b1c51b78a0571c91a723de6049248dc8dd", |
| 23 | "BAD", |
| 24 | "d9ea9c219ce60046e38d3724e0c034e56e36eb7e0038d471b8dcb260491b8dbb23", |
| 25 | "d9e89be9d9e0a0391b6dd6a4624029247138e3a2a04713922524de0036db69d91c", |
| 26 | "d9699422a2b6a048dd90c91c6a802b6259395c8880575b4a58e4ac20269d7248d4", |
| 27 | "d967ac5b1baae0371c71b8ab9c804a9e8e58a55a8038626ec8dcb640395c7244dc", |
| 28 | "d9e8a3e262e68027638db52b88a038634e471a7ec049136e3b1bc8402923adcad2", |
| 29 | "d8eab36e1bbe0046e34d491b608035137658d3524044e48e375cdac0472b9238d4", |
| 30 | "d9689ba5e3d260491b516adb5e4027256e27227ee0351c8e549a5c60492471971b", |
| 31 | "BAD", |
| 32 | "BAD", |
| 33 | "d8e6a2e1d3d2605b1376c8d35280392451391cbc80392a71b6db8aa049238dc8ab", |
| 34 | "d9a87ba1a3982048eb8a471cac00472b4e391bbc40292489b71cc200495b8d3ae3", |
| 35 | "d9278b2a1ba4c0475b8dc722d6e0491b5228da70204ae36dc71d94a056a29236e3", |
| 36 | "d9ec9be2129520392335598c50c04b5bad3d4ba680789b69df5a5aa0469cd1b4da", |
| 37 | "d8ea932623e660669b8e4a9dd8a03aa32a76e466e028d396cc9bbe4047256dc8e5", |
| 38 | "d96a94215aa0403aab713f22e8e024e68db91ab6a027abd1a55b6e804aec9146e4", |
| 39 | "d867ac21e270a0350d6ac91a724037247246d2a6c0396c89d6dc562049244e48d5", |
| 40 | "d8a9b460d3b48026a4ad471b7c20452491b69bbc803ae48db722ee00292491a8db", |
| 41 | "d928a3e1d3b24036e37244abf02047634d371b74c047637148a29ac03b234e38e3", |
| 42 | "d9ab9b21d2e0c0471c693aec54e044dbae46dc7c20391badb724ee8038e469bb15", |
| 43 | "d9a99361a276403b1a6ad6dcd40026e489c8e3bc40371c4dc564e2c036e28eb963", |
| 44 | "BAD", |
| 45 | "BAD", |
| 46 | "BAD", |
| 47 | "BAD", |
| 48 | "BAD", |
| 49 | "BAD", |
| 50 | "d92c8b6d5aee4034ebb22724862047145634a5c0a038e371b8e4a880485c89dd25", |
| 51 | "d8e78b29e3c6c038dba9d91beca04723ad491cda80471471b6ec7ae03b1396b91b", |
| 52 | "d8a78b25e37a0022dd8a46dc68a0351bad391bde2046e56dd8dc96c038e396d89b", |
| 53 | "d8a88c255ab6e038e38e48dbde8038ad8dc8db8ec0376372b564b44038e49234dc", |
| 54 | "d9708ce6a39ce049646646a2c1a0272496b29a66c037db562863ace0795b55b2e3", |
| 55 | "d8ee9bea5ae4003ae371b713eae05adc91995a5ea064dcc9571e786026ed51c52c", |
| 56 | "d9299421d2944036ed69b8e572a048e36d551cd480571d4ec95be680356c69c763", |
| 57 | "d92aab696190c046e26e392cae0026a376a8dc662048d291b75b54c04ad3ae3b1b", |
| 58 | "d8e7a469627a6038e289cb1baca0569b8db6dddec026dc8e38e5dc803722722d23", |
| 59 | "d8a88c299b64c03a548a58e37420272c6dd76b92c0471c9236dbc0e0551c71c713", |
| 60 | "BAD", |
| 61 | "d7299c19a3be8024e58ea7a49f20a522963ad976e0a76ecd92b38500cb62aa4c94", |
| 62 | "d7eb6c6262eee02b2c42e79a60a0aa55aed68a7f00ad358e10fad960e55a39396d", |
| 63 | "d970858dd2ab61d91355ebc15ca1a6a7ca48a05cc0dae66f2523c2a1bad3825daa", |
| 64 | "d8f0844a23ad20da50d6de025e81c37392b9039cc0c764c1bd1e94c1b699736a98", |
| 65 | "d9708ce6a39ce049646646a2c1a0272496b29a66c037db562863ace0795b55b2e3", |
| 66 | "d9299421d2944036ed69b8e572a048e36d551cd480571d4ec95be680356c69c763", |
| 67 | "d9299421d2944036ed69b8e572a048e36d551cd480571d4ec95be680356c69c763", |
| 68 | "d9299421d2944036ed69b8e572a048e36d551cd480571d4ec95be680356c69c763", |
| 69 | "d2577a1cda50004924924924500049249249245000492492492450004923924924", |
| 70 | NULL |
| 71 | }; |
| 72 | |
| 73 | /* Example of a good frame */ |
| 74 | static const char *sample_frame_hex = \ |
| 75 | "d9ec9be212901f802335598c501f805bad3d4ba01f809b69df5a501f809cd1b4da"; |
| 76 | |
| 77 | /** |
| 78 | * Start with a good voice frame and then simulate 20 consecutive bad frames, |
| 79 | * watching how the error concealment decreases the XMAXC parameters. |
| 80 | */ |
| 81 | void test_fr_concealment(void) |
| 82 | { |
| 83 | struct osmo_ecu_fr_state state; |
| 84 | uint8_t frame[GSM_FR_BYTES]; |
| 85 | int i, rc; |
| 86 | |
| 87 | /* Parse frame from string to hex */ |
| 88 | osmo_hexparse(sample_frame_hex, frame, GSM_FR_BYTES); |
| 89 | |
| 90 | printf("Start with: %s\n", sample_frame_hex); |
| 91 | |
| 92 | /* Reset the ECU with the proposed known good frame */ |
| 93 | osmo_ecu_fr_reset(&state, frame); |
| 94 | |
| 95 | /* Now pretend that we do not receive any good frames anymore */ |
| 96 | for (i = 0; i < 20; i++) { |
| 97 | rc = osmo_ecu_fr_conceal(&state, frame); |
| 98 | OSMO_ASSERT(rc == 0); |
| 99 | |
| 100 | printf("conceal: %02i, result: %s\n", |
| 101 | i, osmo_hexdump_nospc(frame, GSM_FR_BYTES)); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /* Simulate a real life situation: voice frames with a few dropouts */ |
| 106 | void test_fr_concealment_realistic() |
| 107 | { |
| 108 | struct osmo_ecu_fr_state state; |
| 109 | uint8_t frame[GSM_FR_BYTES]; |
| 110 | unsigned int frame_len; |
| 111 | int rc, i = 0; |
| 112 | |
| 113 | while (fr_frames_hex[i] != NULL) { |
| 114 | /* Debug print */ |
| 115 | printf("Frame No. %03i:\n", i); |
| 116 | |
| 117 | /* Good or bad frame? */ |
| 118 | frame_len = strlen(fr_frames_hex[i]) / 2; |
| 119 | if (frame_len == GSM_FR_BYTES) { |
| 120 | printf(" * input: %s\n", fr_frames_hex[i]); |
| 121 | osmo_hexparse(fr_frames_hex[i], frame, GSM_FR_BYTES); |
| 122 | osmo_ecu_fr_reset(&state, frame); |
| 123 | } else { |
| 124 | printf(" * input: (bad)\n"); |
| 125 | memset(frame, 0x00, GSM_FR_BYTES); |
| 126 | rc = osmo_ecu_fr_conceal(&state, frame); |
| 127 | OSMO_ASSERT(rc == 0); |
| 128 | } |
| 129 | |
| 130 | /* Print result */ |
| 131 | printf(" * output: %s\n", |
| 132 | osmo_hexdump_nospc(frame, GSM_FR_BYTES)); |
| 133 | |
| 134 | /* Go to the next frame */ |
| 135 | i++; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | int main(int argc, char **argv) |
| 140 | { |
| 141 | /* Perform actual tests */ |
| 142 | test_fr_concealment(); |
| 143 | test_fr_concealment_realistic(); |
| 144 | |
| 145 | return 0; |
| 146 | } |