kopia lustrzana https://github.com/kgoba/ft8_lib
Fixed free message unpacking, some minor code cleanup
Karlis Goba
rodzic
ff7247943c
commit
c727f2b572
87
ft8/text.cpp
87
ft8/text.cpp
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@ -3,8 +3,31 @@
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#include <string.h>
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namespace ft8 {
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const char * trim_front(const char *str) {
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// Skip leading whitespace
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while (*str == ' ') {
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str++;
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}
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return str;
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}
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// Utility functions for characters and strings
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void trim_back(char *str) {
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// Skip trailing whitespace by replacing it with '\0' characters
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int idx = strlen(str) - 1;
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while (idx >= 0 && str[idx] == ' ') {
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str[idx--] = '\0';
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}
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}
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// 1) trims a string from the back by changing whitespaces to '\0'
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// 2) trims a string from the front by skipping whitespaces
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char * trim(char *str) {
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str = (char *)trim_front(str);
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trim_back(str);
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// return a pointer to the first non-whitespace character
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return str;
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}
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char to_upper(char c) {
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return (c >= 'a' && c <= 'z') ? (c - 'a' + 'A') : c;
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@ -118,4 +141,66 @@ void int_to_dd(char *str, int value, int width, bool full_sign) {
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*str = 0; // Add zero terminator
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}
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// convert integer index to ASCII character according to one of 6 tables:
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// table 0: " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ+-./?"
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// table 1: " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// table 2: "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// table 3: "0123456789"
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// table 4: " ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// table 5: " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ/"
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char charn(int c, int table_idx) {
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if (table_idx != 2 && table_idx != 3) {
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if (c == 0) return ' ';
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c -= 1;
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}
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if (table_idx != 4) {
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if (c < 10) return '0' + c;
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c -= 10;
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}
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if (table_idx != 3) {
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if (c < 26) return 'A' + c;
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c -= 26;
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}
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if (table_idx == 0) {
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if (c < 5) return "+-./?" [c];
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}
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else if (table_idx == 5) {
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if (c == 0) return '/';
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}
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return '_'; // unknown character, should never get here
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}
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// Convert character to its index (charn in reverse) according to a table
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int nchar(char c, int table_idx) {
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int n = 0;
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if (table_idx != 2 && table_idx != 3) {
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if (c == ' ') return n + 0;
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n += 1;
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}
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if (table_idx != 4) {
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if (c >= '0' && c <= '9') return n + (c - '0');
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n += 10;
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}
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if (table_idx != 3) {
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if (c >= 'A' && c <= 'Z') return n + (c - 'A');
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n += 26;
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}
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if (table_idx == 0) {
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if (c == '+') return n + 0;
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if (c == '-') return n + 1;
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if (c == '.') return n + 2;
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if (c == '/') return n + 3;
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if (c == '?') return n + 4;
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}
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else if (table_idx == 5) {
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if (c == '/') return n + 0;
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}
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// Character not found
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return -1;
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}
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} // namespace
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@ -1,6 +1,11 @@
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#pragma once
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namespace ft8 {
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// Utility functions for characters and strings
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const char * trim_front(const char *str);
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void trim_back(char *str);
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char * trim(char *str);
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char to_upper(char c);
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bool is_digit(char c);
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@ -23,4 +28,6 @@ namespace ft8 {
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// Convert a 2 digit integer to string
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void int_to_dd(char *str, int value, int width, bool full_sign = false);
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char charn(int c, int table_idx);
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int nchar(char c, int table_idx);
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}
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149
ft8/unpack.cpp
149
ft8/unpack.cpp
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@ -11,33 +11,6 @@ const uint32_t NTOKENS = 2063592L;
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const uint16_t MAXGRID4 = 32400L;
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// convert integer index to ASCII character according to one of 5 tables:
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// table 0: " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ+-./?"
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// table 1: " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// table 2: "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// table 3: "0123456789"
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// table 4: " ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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char charn(int c, int table_idx) {
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if (table_idx == 0 || table_idx == 1 || table_idx == 4) {
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if (c == 0) return ' ';
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c -= 1;
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}
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if (table_idx != 4) {
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if (c < 10) return '0' + c;
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c -= 10;
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}
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if (table_idx != 3) {
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if (c < 26) return 'A' + c;
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c -= 26;
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}
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if (table_idx == 0) {
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if (c < 5) return "+-./?" [c];
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}
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return '_'; // unknown character, should never get here
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}
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// n28 is a 28-bit integer, e.g. n28a or n28b, containing all the
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// call sign bits from a packed message.
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int unpack28(uint32_t n28, uint8_t ip, uint8_t i3, char *result) {
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@ -61,22 +34,14 @@ int unpack28(uint32_t n28, uint8_t ip, uint8_t i3, char *result) {
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char aaaa[5];
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aaaa[4] = '\0';
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aaaa[3] = charn(n % 27, 4);
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n /= 27;
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aaaa[2] = charn(n % 27, 4);
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n /= 27;
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aaaa[1] = charn(n % 27, 4);
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n /= 27;
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aaaa[0] = charn(n % 27, 4);
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// Skip leading whitespace
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int ws_len = 0;
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while (aaaa[ws_len] == ' ') {
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ws_len++;
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for (int i = 3; /* */; --i) {
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aaaa[i] = charn(n % 27, 4);
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if (i == 0) break;
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n /= 27;
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}
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strcpy(result, "CQ ");
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strcat(result, aaaa + ws_len);
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strcat(result, trim_front(aaaa));
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return 0; // Success
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}
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// ? TODO: unspecified in the WSJT-X code
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@ -110,16 +75,7 @@ int unpack28(uint32_t n28, uint8_t ip, uint8_t i3, char *result) {
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callsign[0] = charn(n % 37, 1);
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// Skip trailing and leading whitespace in case of a short callsign
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int ws_len = 0;
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while (ws_len <= 5 && callsign[5 - ws_len] == ' ') {
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callsign[5 - ws_len] = '\0';
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ws_len++;
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}
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ws_len = 0;
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while (callsign[ws_len] == ' ') {
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ws_len++;
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}
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strcpy(result, callsign + ws_len);
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strcpy(result, trim(callsign));
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// Check if we should append /R or /P suffix
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if (ip) {
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@ -176,12 +132,12 @@ int unpack_type1(const uint8_t *a77, uint8_t i3, char *message) {
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strcat(message, field_2);
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// TODO: add to recent calls
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if (field_1[0] != '<' && strlen(field_1) >= 4) {
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// add_call_to_recent_calls(field_1)
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}
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if (field_2[0] != '<' && strlen(field_2) >= 4) {
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// add_call_to_recent_calls(field_2)
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}
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// if (field_1[0] != '<' && strlen(field_1) >= 4) {
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// save_hash_call(field_1)
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// }
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// if (field_2[0] != '<' && strlen(field_2) >= 4) {
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// save_hash_call(field_2)
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// }
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char field_3[5];
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if (igrid4 <= MAXGRID4) {
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@ -237,14 +193,16 @@ int unpack_text(const uint8_t *a71, char *text) {
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// TODO: test
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uint8_t b71[9];
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uint8_t carry = 0;
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for (int i = 0; i < 9; ++i) {
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b71[i] = a71[i];
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b71[i] = carry | (a71[i] >> 1);
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carry = (a71[i] & 1) ? 0x80 : 0;
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}
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for (int idx = 0; idx < 13; ++idx) {
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for (int idx = 12; idx >= 0; --idx) {
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// Divide the long integer in b71 by 42
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uint16_t rem = 0;
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for (int i = 8; i >= 0; --i) {
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for (int i = 0; i < 9; ++i) {
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rem = (rem << 8) | b71[i];
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b71[i] = rem / 42;
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rem = rem % 42;
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@ -284,7 +242,7 @@ int unpack_telemetry(const uint8_t *a71, char *telemetry) {
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//none standard for wsjt-x 2.0
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//by KD8CEC
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int unpack_nonestandard(const uint8_t *a77, uint8_t i3, char *message)
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int unpack_nonstandard(const uint8_t *a77, char *message)
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{
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/*
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wsjt-x 2.1.0 rc5
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@ -313,52 +271,26 @@ int unpack_nonestandard(const uint8_t *a77, uint8_t i3, char *message)
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char c11[12];
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c11[11] = '\0';
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c11[10] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[9] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[8] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[7] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[6] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[5] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[4] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[3] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[2] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[1] = charn(n58 % 38, 0);
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n58 /= 38;
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c11[0] = charn(n58 % 38, 0);
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//StrTrim(c11);
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for (int i = 10; /* no condition */ ; --i) {
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c11[i] = charn(n58 % 38, 5);
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if (i == 0) break;
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n58 /= 38;
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}
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char call_3[15];
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char *call_1, *call_2;
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call_3[0] = '<';
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call_3[1] = '>';
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call_3[2] = '\0';
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//hash12(n12, call_3);
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if (iflip == 0)
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{
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call_1 = call_3;
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call_2 = c11;
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//save_hash_call(call_2);
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}
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else
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{
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call_1 = c11;
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call_2 = call_3;
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//save_hash_call(call_1);
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}
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char * call_1 = (iflip) ? c11 : call_3;
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char * call_2 = (iflip) ? call_3 : c11;
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//save_hash_call(c11_trimmed);
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if (icq == 0)
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{
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strcpy(message, call_1);
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if (icq == 0) {
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strcpy(message, trim(call_1));
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strcat(message, " ");
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strcat(message, call_1);
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strcat(message, trim(call_2));
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if (nrpt == 1)
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strcat(message, " RRR");
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else if (nrpt == 2)
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@ -366,11 +298,9 @@ int unpack_nonestandard(const uint8_t *a77, uint8_t i3, char *message)
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else if (nrpt == 3)
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strcat(message, " 73");
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}
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else
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{
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} else {
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strcpy(message, "CQ ");
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strcat(message, c11);
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strcat(message, trim(call_2));
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}
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return 0;
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@ -412,13 +342,14 @@ int unpack77(const uint8_t *a77, char *message) {
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// // Type 4: Nonstandard calls, e.g. <WA9XYZ> PJ4/KA1ABC RR73
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// // One hashed call or "CQ"; one compound or nonstandard call with up
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// // to 11 characters; and (if not "CQ") an optional RRR, RR73, or 73.
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return unpack_nonestandard(a77, i3, message);
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}
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else {
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// unknown type
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message[0] = '\0';
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return unpack_nonstandard(a77, message);
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}
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// else if (i3 == 5) {
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// // Type 5: TU; W9XYZ K1ABC R-09 FN 1 28 28 1 7 9 74 WWROF contest
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// }
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// unknown type, should never get here
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message[0] = '\0';
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return 0;
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}
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