/*
-Copyright (c) 2004-2009, John Hurst
+Copyright (c) 2004-2014, John Hurst
All rights reserved.
Redistribution and use in source and binary forms, with or without
}
+
+//------------------------------------------------------------------------------------------
+//
+
+// Encodes a rational number as a string having a single delimiter character between
+// numerator and denominator. Retuns the buffer pointer to allow convenient in-line use.
+const char*
+ASDCP::EncodeRational(const Rational& rational, char* str_buf, ui32_t buf_len, char delimiter)
+{
+ assert(str_buf);
+ snprintf(str_buf, buf_len, "%u%c%u", rational.Numerator, delimiter, rational.Denominator);
+ return str_buf;
+}
+
+// Decodes a rational number havng a single non-digit delimiter character between
+// the numerator and denominator. Returns false if the string does not contain
+// the expected syntax.
+bool
+ASDCP::DecodeRational(const char* str_rational, Rational& rational)
+{
+ assert(str_rational);
+ rational.Numerator = strtol(str_rational, 0, 10);
+
+ const char* p = str_rational;
+ while ( *p && isdigit(*p) )
+ {
+ ++p;
+ }
+
+ if ( p[0] == 0 || p[1] == 0 )
+ {
+ return false;
+ }
+
+ ++p;
+ rational.Denominator = strtol(p, 0, 10);
+ return true;
+}
+
+
//------------------------------------------------------------------------------------------
//
// frame buffer base class implementation