FreeCalypso > hg > freecalypso-tools
view librftab/rftablerd.c @ 619:f82551c77e58
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted
Reports from Das Signal indicate that loadtools performance on Debian
is about the same as on Slackware, and that including or omitting the
ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the
patch in question does not appear to be necessary, it is being reverted
until and unless someone other than Serg reports an actual real-world
system on which loadtools operation times are slowed compared to the
Mother's Slackware reference and on which Slackware-like performance
can be restored by setting the ASYNC_LOW_LATENCY flag.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 27 Feb 2020 01:09:48 +0000 |
parents | a0f79bba0ad8 |
children | 059649902c7f |
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/* * Reading RF tables from formatted ASCII files: used for the rftw command * in fc-tmsh, for the upload-rf-table command in fc-fsio, and in the * standalone fc-cal2bin utility. */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "../rvinterf/include/exitcodes.h" #include "rdcommon.c" static char *format; static u_char *writeptr; static unsigned written_size, maxsize; static process_number(size) { char *field; int rc; u_long number; rc = get_field(&field); if (rc < 0) return(ERROR_USAGE); if (!rc) { printf("error: %s is too short for table format %s\n", filename, format); return(ERROR_USAGE); } if (field[0] == '-') number = strtol(field, 0, 0); else number = strtoul(field, 0, 0); switch (size) { case 1: *writeptr++ = number; break; case 2: *writeptr++ = number; *writeptr++ = number >> 8; break; case 4: *writeptr++ = number; *writeptr++ = number >> 8; *writeptr++ = number >> 16; *writeptr++ = number >> 24; break; default: abort(); } written_size += size; return(0); } static expect_keyword(kw) char *kw; { char *field; int rc; rc = get_field(&field); if (rc < 0) return(ERROR_USAGE); if (!rc) { printf("error: %s is too short for table format %s\n", filename, format); return(ERROR_USAGE); } if (strcmp(field, kw)) { printf("%s line %d: expected %s keyword\n", filename, lineno, kw); return(ERROR_USAGE); } return(0); } static ensure_eof() { char *field; int rc; rc = get_field(&field); if (rc < 0) return(ERROR_USAGE); if (rc) { printf("error: %s is too long for table format %s\n", filename, format); return(ERROR_USAGE); } return(0); } static read_agc_table() { int i, rc; for (i = 0; i < 20; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_afcparams() { int i, rc; for (i = 0; i < 4; i++) { rc = process_number(4); if (rc) return(rc); } for (i = 0; i < 4; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_agc_global_params() { int i, rc; for (i = 0; i < 4; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_il2agc() { int i, rc; for (i = 0; i < 121; i++) { rc = process_number(1); if (rc) return(rc); } return ensure_eof(); } static read_tx_ramps() { int i, j, rc; if (maxsize < 512) { printf("error: tx-ramps table not allowed in this context\n"); return(ERROR_USAGE); } for (i = 0; i < 16; i++) { rc = expect_keyword("ramp-up"); if (rc) return(rc); for (j = 0; j < 16; j++) { rc = process_number(1); if (rc) return(rc); } rc = expect_keyword("ramp-down"); if (rc) return(rc); for (j = 0; j < 16; j++) { rc = process_number(1); if (rc) return(rc); } } return ensure_eof(); } static read_tx_levels() { int i, rc; for (i = 0; i < 32; i++) { rc = process_number(2); if (rc) return(rc); rc = process_number(1); if (rc) return(rc); rc = process_number(1); if (rc) return(rc); } return ensure_eof(); } static read_tx_calchan() { int i, rc; for (i = 0; i < 64; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_tx_caltemp() { int i, rc; for (i = 0; i < 20; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_rx_calchan() { int i, rc; for (i = 0; i < 20; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_rx_caltemp() { int i, rc; for (i = 0; i < 22; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_rx_agc_params() { int i, rc; for (i = 0; i < 4; i++) { rc = process_number(2); if (rc) return(rc); } return ensure_eof(); } static read_raw_table() { int rc; char *field; u_long number; for (;;) { rc = get_field(&field); if (rc < 0) return(ERROR_USAGE); if (!rc) break; number = strtoul(field, 0, 16); if (written_size >= maxsize) { printf("error: raw table %s exceeds maximum size\n", filename); return(ERROR_USAGE); } *writeptr++ = number; written_size++; } if (!written_size) { printf("error: raw table %s is empty\n", filename); return(ERROR_USAGE); } return(0); } static struct table_format { char *kw; int (*handler)(); } table_formats[] = { {"agc-table", read_agc_table}, {"afcparams", read_afcparams}, {"agc-global-params", read_agc_global_params}, {"il2agc", read_il2agc}, {"tx-ramps", read_tx_ramps}, {"tx-levels", read_tx_levels}, {"tx-calchan", read_tx_calchan}, {"tx-caltemp", read_tx_caltemp}, {"rx-calchan", read_rx_calchan}, {"rx-caltemp", read_rx_caltemp}, {"rx-agc-params", read_rx_agc_params}, {"raw", read_raw_table}, {0, 0} }; read_rf_table_ext(filename_arg, rdbuf, allow_large, format_ret, size_ret) char *filename_arg; u_char *rdbuf; char **format_ret; unsigned *size_ret; { char *field; int rc; struct table_format *tp; filename = filename_arg; rdfile = fopen(filename, "r"); if (!rdfile) { perror(filename); return(ERROR_UNIX); } lineno = 0; line_nfields = 0; rc = get_field(&field); if (rc <= 0) { not_valid_rftable: printf("error: %s is not a valid RF table file\n", filename); fclose(rdfile); return(ERROR_USAGE); } if (strcmp(field, "rf_table")) goto not_valid_rftable; rc = get_field(&field); if (rc <= 0) goto not_valid_rftable; for (tp = table_formats; tp->kw; tp++) if (!strcmp(tp->kw, field)) break; if (!tp->kw) { printf("error: table format \"%s\" not recognized\n", field); fclose(rdfile); return(ERROR_USAGE); } format = tp->kw; if (format_ret) *format_ret = format; writeptr = rdbuf; written_size = 0; if (allow_large) maxsize = 512; else maxsize = 128; rc = tp->handler(); fclose(rdfile); if (size_ret) *size_ret = written_size; return(rc); }