57ac46cf9b
This should allow for easy support for other operating systems and other Linux sound systems like Jack in the future
375 lines
10 KiB
C++
375 lines
10 KiB
C++
#include <string.h>
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#include <stdlib.h>
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#include "rtmidi_c.h"
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#include "RtMidi.h"
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/* Compile-time assertions that will break if the enums are changed in
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* the future without synchronizing them properly. If you get (g++)
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* "error: ‘StaticEnumAssert<b>::StaticEnumAssert() [with bool b = false]’
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* is private within this context", it means enums are not aligned. */
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template<bool b> class StaticEnumAssert { private: StaticEnumAssert() {} };
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template<> class StaticEnumAssert<true>{ public: StaticEnumAssert() {} };
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#define ENUM_EQUAL(x,y) StaticEnumAssert<(int)x==(int)y>()
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class StaticEnumAssertions { StaticEnumAssertions() {
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ENUM_EQUAL( RTMIDI_API_UNSPECIFIED, RtMidi::UNSPECIFIED );
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ENUM_EQUAL( RTMIDI_API_MACOSX_CORE, RtMidi::MACOSX_CORE );
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ENUM_EQUAL( RTMIDI_API_LINUX_ALSA, RtMidi::LINUX_ALSA );
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ENUM_EQUAL( RTMIDI_API_UNIX_JACK, RtMidi::UNIX_JACK );
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ENUM_EQUAL( RTMIDI_API_WINDOWS_MM, RtMidi::WINDOWS_MM );
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ENUM_EQUAL( RTMIDI_API_RTMIDI_DUMMY, RtMidi::RTMIDI_DUMMY );
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ENUM_EQUAL( RTMIDI_ERROR_WARNING, RtMidiError::WARNING );
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ENUM_EQUAL( RTMIDI_ERROR_DEBUG_WARNING, RtMidiError::DEBUG_WARNING );
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ENUM_EQUAL( RTMIDI_ERROR_UNSPECIFIED, RtMidiError::UNSPECIFIED );
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ENUM_EQUAL( RTMIDI_ERROR_NO_DEVICES_FOUND, RtMidiError::NO_DEVICES_FOUND );
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ENUM_EQUAL( RTMIDI_ERROR_INVALID_DEVICE, RtMidiError::INVALID_DEVICE );
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ENUM_EQUAL( RTMIDI_ERROR_MEMORY_ERROR, RtMidiError::MEMORY_ERROR );
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ENUM_EQUAL( RTMIDI_ERROR_INVALID_PARAMETER, RtMidiError::INVALID_PARAMETER );
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ENUM_EQUAL( RTMIDI_ERROR_INVALID_USE, RtMidiError::INVALID_USE );
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ENUM_EQUAL( RTMIDI_ERROR_DRIVER_ERROR, RtMidiError::DRIVER_ERROR );
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ENUM_EQUAL( RTMIDI_ERROR_SYSTEM_ERROR, RtMidiError::SYSTEM_ERROR );
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ENUM_EQUAL( RTMIDI_ERROR_THREAD_ERROR, RtMidiError::THREAD_ERROR );
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}};
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class CallbackProxyUserData
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{
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public:
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CallbackProxyUserData (RtMidiCCallback cCallback, void *userData)
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: c_callback (cCallback), user_data (userData)
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{
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}
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RtMidiCCallback c_callback;
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void *user_data;
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};
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#ifndef RTMIDI_SOURCE_INCLUDED
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extern "C" const enum RtMidiApi rtmidi_compiled_apis[]; // casting from RtMidi::Api[]
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#endif
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extern "C" const unsigned int rtmidi_num_compiled_apis;
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/* RtMidi API */
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int rtmidi_get_compiled_api (enum RtMidiApi *apis, unsigned int apis_size)
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{
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unsigned num = rtmidi_num_compiled_apis;
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if (apis) {
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num = (num < apis_size) ? num : apis_size;
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memcpy(apis, rtmidi_compiled_apis, num * sizeof(enum RtMidiApi));
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}
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return (int)num;
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}
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extern "C" const char* rtmidi_api_names[][2];
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const char *rtmidi_api_name(enum RtMidiApi api) {
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if (api < 0 || api >= RTMIDI_API_NUM)
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return NULL;
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return rtmidi_api_names[api][0];
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}
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const char *rtmidi_api_display_name(enum RtMidiApi api)
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{
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if (api < 0 || api >= RTMIDI_API_NUM)
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return "Unknown";
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return rtmidi_api_names[api][1];
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}
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enum RtMidiApi rtmidi_compiled_api_by_name(const char *name) {
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RtMidi::Api api = RtMidi::UNSPECIFIED;
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if (name) {
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api = RtMidi::getCompiledApiByName(name);
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}
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return (enum RtMidiApi)api;
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}
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void rtmidi_error (MidiApi *api, enum RtMidiErrorType type, const char* errorString)
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{
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std::string msg = errorString;
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api->error ((RtMidiError::Type) type, msg);
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}
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void rtmidi_open_port (RtMidiPtr device, unsigned int portNumber, const char *portName)
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{
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std::string name = portName;
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try {
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((RtMidi*) device->ptr)->openPort (portNumber, name);
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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}
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}
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void rtmidi_open_virtual_port (RtMidiPtr device, const char *portName)
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{
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std::string name = portName;
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try {
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((RtMidi*) device->ptr)->openVirtualPort (name);
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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}
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}
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void rtmidi_close_port (RtMidiPtr device)
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{
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try {
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((RtMidi*) device->ptr)->closePort ();
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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}
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}
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unsigned int rtmidi_get_port_count (RtMidiPtr device)
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{
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try {
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return ((RtMidi*) device->ptr)->getPortCount ();
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return -1;
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}
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}
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int rtmidi_get_port_name (RtMidiPtr device, unsigned int portNumber, char * bufOut, int * bufLen)
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{
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if (bufOut == nullptr && bufLen == nullptr) {
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return -1;
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}
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std::string name;
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try {
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name = ((RtMidi*) device->ptr)->getPortName (portNumber);
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return -1;
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}
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if (bufOut == nullptr) {
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*bufLen = static_cast<int>(name.size()) + 1;
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return 0;
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}
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return snprintf(bufOut, static_cast<size_t>(*bufLen), "%s", name.c_str());
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}
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/* RtMidiIn API */
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RtMidiInPtr rtmidi_in_create_default ()
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{
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RtMidiWrapper* wrp = new RtMidiWrapper;
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try {
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RtMidiIn* rIn = new RtMidiIn ();
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wrp->ptr = (void*) rIn;
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wrp->data = 0;
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wrp->ok = true;
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wrp->msg = "";
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} catch (const RtMidiError & err) {
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wrp->ptr = 0;
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wrp->data = 0;
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wrp->ok = false;
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wrp->msg = err.what ();
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}
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return wrp;
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}
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RtMidiInPtr rtmidi_in_create (enum RtMidiApi api, const char *clientName, unsigned int queueSizeLimit)
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{
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std::string name = clientName;
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RtMidiWrapper* wrp = new RtMidiWrapper;
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try {
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RtMidiIn* rIn = new RtMidiIn ((RtMidi::Api) api, name, queueSizeLimit);
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wrp->ptr = (void*) rIn;
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wrp->data = 0;
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wrp->ok = true;
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wrp->msg = "";
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} catch (const RtMidiError & err) {
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wrp->ptr = 0;
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wrp->data = 0;
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wrp->ok = false;
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wrp->msg = err.what ();
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}
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return wrp;
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}
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void rtmidi_in_free (RtMidiInPtr device)
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{
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if (device->data)
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delete (CallbackProxyUserData*) device->data;
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delete (RtMidiIn*) device->ptr;
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delete device;
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}
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enum RtMidiApi rtmidi_in_get_current_api (RtMidiPtr device)
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{
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try {
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return (RtMidiApi) ((RtMidiIn*) device->ptr)->getCurrentApi ();
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return RTMIDI_API_UNSPECIFIED;
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}
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}
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static
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void callback_proxy (double timeStamp, std::vector<unsigned char> *message, void *userData)
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{
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CallbackProxyUserData* data = reinterpret_cast<CallbackProxyUserData*> (userData);
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data->c_callback (timeStamp, message->data (), message->size (), data->user_data);
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}
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void rtmidi_in_set_callback (RtMidiInPtr device, RtMidiCCallback callback, void *userData)
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{
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device->data = (void*) new CallbackProxyUserData (callback, userData);
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try {
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((RtMidiIn*) device->ptr)->setCallback (callback_proxy, device->data);
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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delete (CallbackProxyUserData*) device->data;
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device->data = 0;
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}
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}
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void rtmidi_in_cancel_callback (RtMidiInPtr device)
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{
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try {
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((RtMidiIn*) device->ptr)->cancelCallback ();
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delete (CallbackProxyUserData*) device->data;
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device->data = 0;
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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}
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}
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void rtmidi_in_ignore_types (RtMidiInPtr device, bool midiSysex, bool midiTime, bool midiSense)
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{
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((RtMidiIn*) device->ptr)->ignoreTypes (midiSysex, midiTime, midiSense);
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}
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double rtmidi_in_get_message (RtMidiInPtr device,
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unsigned char *message,
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size_t *size)
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{
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try {
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// FIXME: use allocator to achieve efficient buffering
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std::vector<unsigned char> v;
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double ret = ((RtMidiIn*) device->ptr)->getMessage (&v);
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if (v.size () > 0 && v.size() <= *size) {
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memcpy (message, v.data (), (int) v.size ());
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}
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*size = v.size();
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return ret;
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}
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catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return -1;
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}
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catch (...) {
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device->ok = false;
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device->msg = "Unknown error";
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return -1;
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}
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}
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/* RtMidiOut API */
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RtMidiOutPtr rtmidi_out_create_default ()
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{
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RtMidiWrapper* wrp = new RtMidiWrapper;
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try {
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RtMidiOut* rOut = new RtMidiOut ();
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wrp->ptr = (void*) rOut;
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wrp->data = 0;
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wrp->ok = true;
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wrp->msg = "";
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} catch (const RtMidiError & err) {
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wrp->ptr = 0;
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wrp->data = 0;
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wrp->ok = false;
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wrp->msg = err.what ();
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}
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return wrp;
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}
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RtMidiOutPtr rtmidi_out_create (enum RtMidiApi api, const char *clientName)
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{
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RtMidiWrapper* wrp = new RtMidiWrapper;
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std::string name = clientName;
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try {
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RtMidiOut* rOut = new RtMidiOut ((RtMidi::Api) api, name);
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wrp->ptr = (void*) rOut;
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wrp->data = 0;
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wrp->ok = true;
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wrp->msg = "";
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} catch (const RtMidiError & err) {
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wrp->ptr = 0;
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wrp->data = 0;
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wrp->ok = false;
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wrp->msg = err.what ();
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}
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return wrp;
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}
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void rtmidi_out_free (RtMidiOutPtr device)
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{
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delete (RtMidiOut*) device->ptr;
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delete device;
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}
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enum RtMidiApi rtmidi_out_get_current_api (RtMidiPtr device)
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{
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try {
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return (RtMidiApi) ((RtMidiOut*) device->ptr)->getCurrentApi ();
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} catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return RTMIDI_API_UNSPECIFIED;
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}
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}
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int rtmidi_out_send_message (RtMidiOutPtr device, const unsigned char *message, int length)
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{
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try {
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((RtMidiOut*) device->ptr)->sendMessage (message, length);
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return 0;
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}
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catch (const RtMidiError & err) {
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device->ok = false;
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device->msg = err.what ();
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return -1;
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}
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catch (...) {
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device->ok = false;
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device->msg = "Unknown error";
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return -1;
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}
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}
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