diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ConfigParser.cpp | 18 | ||||
| -rw-r--r-- | src/dabInputPrbs.cpp | 34 | ||||
| -rw-r--r-- | src/utils.cpp | 26 | ||||
| -rw-r--r-- | src/utils.h | 8 |
4 files changed, 51 insertions, 35 deletions
diff --git a/src/ConfigParser.cpp b/src/ConfigParser.cpp index 8e5fed1..e68f98f 100644 --- a/src/ConfigParser.cpp +++ b/src/ConfigParser.cpp @@ -112,24 +112,6 @@ static void setup_subchannel_from_ptree(DabSubchannel* subchan, std::shared_ptr<dabEnsemble> ensemble, const string& subchanuid); -/* a helper class to parse hexadecimal ids */ -static int hexparse(std::string input) -{ - int value; - if (input.find("0x") == 0) { - value = strtoll(input.c_str() + 2, nullptr, 16); - } - else { - value = strtoll(input.c_str(), nullptr, 10); - } - - if (errno == ERANGE) { - throw runtime_error("hex conversion: value out of range"); - } - - return value; -} - static uint16_t get_announcement_flag_from_ptree( boost::property_tree::ptree& pt ) diff --git a/src/dabInputPrbs.cpp b/src/dabInputPrbs.cpp index f34c427..f9a62b5 100644 --- a/src/dabInputPrbs.cpp +++ b/src/dabInputPrbs.cpp @@ -34,30 +34,36 @@ #include <limits.h> #include <stdlib.h> #include <errno.h> +#include "utils.h" using namespace std; +// ETS 300 799 Clause G.2.1 +// Preferred polynomial is G(x) = x^20 + x^17 + 1 +const uint32_t PRBS_DEFAULT_POLY = (1 << 19) | (1 << 16) | 1; + int DabInputPrbs::open(const string name) { - if (name[0] != ':') { - throw invalid_argument( - "Invalid PRBS address format. Must be prbs://:polynomial."); + if (name.empty()) { + m_prbs.setup(PRBS_DEFAULT_POLY); } + else { + if (name[0] != ':') { + throw invalid_argument( + "Invalid PRBS address format. " + "Must be prbs://:polynomial."); + } - const string poly_str = name.substr(1); + const string poly_str = name.substr(1); - long polynomial = strtol(poly_str.c_str(), (char **)NULL, 10); - if ((polynomial == LONG_MIN) || (polynomial == LONG_MAX)) { - stringstream ss; - ss << "Can't convert polynomial number " << poly_str; - throw invalid_argument(ss.str()); - } + long polynomial = hexparse(poly_str); - if (polynomial == 0) { - throw invalid_argument("No polynomial given for PRBS input"); - } + if (polynomial == 0) { + throw invalid_argument("No polynomial given for PRBS input"); + } - m_prbs.setup(polynomial); + m_prbs.setup(polynomial); + } rewind(); return 0; diff --git a/src/utils.cpp b/src/utils.cpp index 9976e88..f0df772 100644 --- a/src/utils.cpp +++ b/src/utils.cpp @@ -426,3 +426,29 @@ void printEnsemble(const shared_ptr<dabEnsemble> ensemble) } } +long hexparse(const std::string& input) +{ + long value = 0; + errno = 0; + + // Do not use strtol's base=0 because + // we do not want to accept octal. + if (input.find("0x") == 0) { + value = strtol(input.c_str() + 2, nullptr, 16); + } + else { + value = strtol(input.c_str(), nullptr, 10); + } + + if ((value == LONG_MIN or value == LONG_MAX) and errno == ERANGE) { + throw out_of_range("hexparse: value out of range"); + } + else if (value == 0 and errno != 0) { + stringstream ss; + ss << "hexparse: " << strerror(errno); + throw invalid_argument(ss.str()); + } + + return value; +} + diff --git a/src/utils.h b/src/utils.h index f65bba8..94712cd 100644 --- a/src/utils.h +++ b/src/utils.h @@ -26,9 +26,10 @@ You should have received a copy of the GNU General Public License along with ODR-DabMux. If not, see <http://www.gnu.org/licenses/>. */ -#ifndef _UTILS_H -#define _UTILS_H +#pragma once +#include <string> +#include <vector> #include <cstdio> #include <memory> #include "MuxElements.h" @@ -78,5 +79,6 @@ void printEnsemble(const std::shared_ptr<dabEnsemble> ensemble); /* Print detailed component information */ void printComponent(DabComponent* component); -#endif + +long hexparse(const std::string& input); |