diff --git a/RtAudio.cpp b/RtAudio.cpp index b091e15..db3b7cb 100644 --- a/RtAudio.cpp +++ b/RtAudio.cpp @@ -45,6 +45,7 @@ #include #include #include +#include #include #include @@ -133,6 +134,92 @@ void RtAudio :: getCompiledApi( std::vector &apis ) #endif } +const std::string &RtAudio :: getCompiledApiName( RtAudio::Api api ) +{ +#if defined(__UNIX_JACK__) + if ( api == UNIX_JACK ) { + static std::string name( "JACK" ); + return name; + } +#endif +#if defined(__LINUX_PULSE__) + if ( api == LINUX_PULSE ) { + static std::string name( "PulseAudio" ); + return name; + } +#endif +#if defined(__LINUX_ALSA__) + if ( api == LINUX_ALSA ) { + static std::string name( "ALSA" ); + return name; + } +#endif +#if defined(__LINUX_OSS__) + if ( api == LINUX_OSS ) { + static std::string name( "OSS" ); + return name; + } +#endif +#if defined(__WINDOWS_ASIO__) + if ( api == WINDOWS_ASIO ) { + static std::string name( "ASIO" ); + return name; + } +#endif +#if defined(__WINDOWS_WASAPI__) + if ( api == WINDOWS_WASAPI ) { + static std::string name( "WASAPI" ); + return name; + } +#endif +#if defined(__WINDOWS_DS__) + if ( api == WINDOWS_DS ) { + static std::string name( "DirectSound" ); + return name; + } +#endif +#if defined(__MACOSX_CORE__) + if ( api == MACOSX_CORE ) { + static std::string name( "CoreAudio" ); + return name; + } +#endif +#if defined(__RTAUDIO_DUMMY__) + if ( api == RTAUDIO_DUMMY ) { + static std::string name( "Dummy" ); + return name; + } +#endif + static std::string name; + return name; +} + +RtAudio::Api RtAudio :: getCompiledApiByName( const std::string &name ) +{ + unsigned int api_number = RtAudio::UNSPECIFIED; + size_t nameLength = name.size(); + + if ( nameLength == 0 ) + return RtAudio::UNSPECIFIED; + + while ( api_number <= RtAudio::RTAUDIO_DUMMY ) { + const std::string &otherName = + getCompiledApiName((RtAudio::Api)api_number); + + bool equal = nameLength == otherName.size(); + for ( size_t i = 0; equal && i < nameLength; ++i ) + equal = tolower((unsigned char)name[i]) == + tolower((unsigned char)otherName[i]); + + if ( equal ) + return (RtAudio::Api)api_number; + + ++api_number; + } + + return RtAudio::UNSPECIFIED; +} + void RtAudio :: openRtApi( RtAudio::Api api ) { if ( rtapi_ ) diff --git a/RtAudio.h b/RtAudio.h index 34a2534..91124cf 100644 --- a/RtAudio.h +++ b/RtAudio.h @@ -397,6 +397,21 @@ class RTAUDIO_DLL_PUBLIC RtAudio */ static void getCompiledApi( std::vector &apis ); + //! Return the name of a specified compiled audio API. + /*! + If the API is unknown or not compiled, this function will return + the empty string. + */ + static const std::string &getCompiledApiName( RtAudio::Api api ); + + //! Return the compiled audio API having the given name. + /*! + A case insensitive comparison will check the specified name + against the list of compiled APIs, and return the one which + matches. On failure, the function returns UNSPECIFIED. + */ + static RtAudio::Api getCompiledApiByName( const std::string &name ); + //! The class constructor. /*! The constructor performs minor initialization tasks. An exception diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt index 0fb028f..f611d51 100644 --- a/tests/CMakeLists.txt +++ b/tests/CMakeLists.txt @@ -18,6 +18,9 @@ target_link_libraries(record rtaudio_static ${LINKLIBS}) add_executable(duplex duplex.cpp) target_link_libraries(duplex rtaudio_static ${LINKLIBS}) +add_executable(apinames apinames.cpp) +target_link_libraries(apinames rtaudio_static ${LINKLIBS}) + add_executable(testall testall.cpp) target_link_libraries(testall rtaudio_static ${LINKLIBS}) diff --git a/tests/Makefile.am b/tests/Makefile.am index e39fdde..c8159da 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -1,5 +1,5 @@ -noinst_PROGRAMS = audioprobe playsaw playraw record duplex testall teststops +noinst_PROGRAMS = audioprobe playsaw playraw record duplex apinames testall teststops AM_CXXFLAGS = -Wall -I$(top_srcdir) @@ -18,6 +18,9 @@ record_LDADD = $(top_builddir)/librtaudio.la duplex_SOURCES = duplex.cpp duplex_LDADD = $(top_builddir)/librtaudio.la +apinames_SOURCES = apinames.cpp +apinames_LDADD = $(top_builddir)/librtaudio.la + testall_SOURCES = testall.cpp testall_LDADD = $(top_builddir)/librtaudio.la diff --git a/tests/apinames.cpp b/tests/apinames.cpp new file mode 100644 index 0000000..b915ad0 --- /dev/null +++ b/tests/apinames.cpp @@ -0,0 +1,75 @@ +/******************************************/ +/* + apinames.cpp + by Jean Pierre Cimalando, 2018. + + This program tests parts of RtAudio related + to API names, the conversion from name to API + and vice-versa. +*/ +/******************************************/ + +#include "RtAudio.h" +#include +#include +#include + +int main() { + std::vector apis; + RtAudio::getCompiledApi( apis ); + + // ensure the known APIs return valid names + std::cout << "API names by identifier:\n"; + for ( size_t i = 0; i < apis.size() ; ++i ) { + const std::string &name = RtAudio::getCompiledApiName(apis[i]); + if (name.empty()) { + std::cerr << "Invalid name for API " << (int)apis[i] << "\n"; + exit(1); + } + std::cout << "* " << (int)apis[i] << ": '" << name << "'\n"; + } + + // ensure unknown APIs return the empty string + { + const std::string &name = RtAudio::getCompiledApiName((RtAudio::Api)-1); + if (!name.empty()) { + std::cerr << "Bad string for invalid API\n"; + exit(1); + } + } + + // try getting API identifier by case-insensitive name + std::cout << "API identifiers by name:\n"; + for ( size_t i = 0; i < apis.size() ; ++i ) { + std::string name = RtAudio::getCompiledApiName(apis[i]); + if ( RtAudio::getCompiledApiByName(name) != apis[i] ) { + std::cerr << "Bad identifier for API '" << name << "'\n"; + exit( 1 ); + } + std::cout << "* '" << name << "': " << (int)apis[i] << "\n"; + for ( size_t j = 0; j < name.size(); ++j ) + name[j] = (j & 1) ? toupper(name[j]) : tolower(name[j]); + if ( RtAudio::getCompiledApiByName(name) != apis[i] ) { + std::cerr << "Bad identifier for API '" << name << "'\n"; + exit( 1 ); + } + std::cout << "* '" << name << "': " << (int)apis[i] << "\n"; + } + + // try getting an API identifier by unknown name + { + RtAudio::Api api; + api = RtAudio::getCompiledApiByName("ALSO"); + if ( api != RtAudio::UNSPECIFIED ) { + std::cerr << "Bad identifier for unknown API name\n"; + exit( 1 ); + } + api = RtAudio::getCompiledApiByName(""); + if ( api != RtAudio::UNSPECIFIED ) { + std::cerr << "Bad identifier for unknown API name\n"; + exit( 1 ); + } + } + + return 0; +}