ref: 3e7b18472cba687a04f6cd9be66ad531ed24283c
dir: /src/rtmidi/rtmidi_c.cpp/
#include <string.h>
#include <stdlib.h>
#include "rtmidi_c.h"
#include "RtMidi.h"
/* Compile-time assertions that will break if the enums are changed in
* the future without synchronizing them properly. If you get (g++)
* "error: ‘StaticAssert<b>::StaticAssert() [with bool b = false]’ is
* private within this context", it means enums are not aligned. */
template<bool b> class StaticAssert { private: StaticAssert() {} };
template<> class StaticAssert<true>{ public: StaticAssert() {} };
#define ENUM_EQUAL(x,y) StaticAssert<(int)x==(int)y>()
class StaticAssertions { StaticAssertions() {
ENUM_EQUAL( RTMIDI_API_UNSPECIFIED, RtMidi::UNSPECIFIED );
ENUM_EQUAL( RTMIDI_API_MACOSX_CORE, RtMidi::MACOSX_CORE );
ENUM_EQUAL( RTMIDI_API_LINUX_ALSA, RtMidi::LINUX_ALSA );
ENUM_EQUAL( RTMIDI_API_UNIX_JACK, RtMidi::UNIX_JACK );
ENUM_EQUAL( RTMIDI_API_WINDOWS_MM, RtMidi::WINDOWS_MM );
ENUM_EQUAL( RTMIDI_API_RTMIDI_DUMMY, RtMidi::RTMIDI_DUMMY );
ENUM_EQUAL( RTMIDI_ERROR_WARNING, RtMidiError::WARNING );
ENUM_EQUAL( RTMIDI_ERROR_DEBUG_WARNING, RtMidiError::DEBUG_WARNING );
ENUM_EQUAL( RTMIDI_ERROR_UNSPECIFIED, RtMidiError::UNSPECIFIED );
ENUM_EQUAL( RTMIDI_ERROR_NO_DEVICES_FOUND, RtMidiError::NO_DEVICES_FOUND );
ENUM_EQUAL( RTMIDI_ERROR_INVALID_DEVICE, RtMidiError::INVALID_DEVICE );
ENUM_EQUAL( RTMIDI_ERROR_MEMORY_ERROR, RtMidiError::MEMORY_ERROR );
ENUM_EQUAL( RTMIDI_ERROR_INVALID_PARAMETER, RtMidiError::INVALID_PARAMETER );
ENUM_EQUAL( RTMIDI_ERROR_INVALID_USE, RtMidiError::INVALID_USE );
ENUM_EQUAL( RTMIDI_ERROR_DRIVER_ERROR, RtMidiError::DRIVER_ERROR );
ENUM_EQUAL( RTMIDI_ERROR_SYSTEM_ERROR, RtMidiError::SYSTEM_ERROR );
ENUM_EQUAL( RTMIDI_ERROR_THREAD_ERROR, RtMidiError::THREAD_ERROR );
}};
class CallbackProxyUserData
{
public:
CallbackProxyUserData (RtMidiCCallback cCallback, void *userData)
: c_callback (cCallback), user_data (userData)
{
}
RtMidiCCallback c_callback;
void *user_data;
};
extern "C" const enum RtMidiApi rtmidi_compiled_apis[]; // casting from RtMidi::Api[]
extern "C" const unsigned int rtmidi_num_compiled_apis;
/* RtMidi API */
int rtmidi_get_compiled_api (enum RtMidiApi *apis, unsigned int apis_size)
{
unsigned num = rtmidi_num_compiled_apis;
if (apis) {
num = (num < apis_size) ? num : apis_size;
memcpy(apis, rtmidi_compiled_apis, num * sizeof(enum RtMidiApi));
}
return (int)num;
}
extern "C" const char* rtmidi_api_names[][2];
const char *rtmidi_api_name(enum RtMidiApi api) {
if (api < 0 || api >= RTMIDI_API_NUM)
return NULL;
return rtmidi_api_names[api][0];
}
const char *rtmidi_api_display_name(enum RtMidiApi api)
{
if (api < 0 || api >= RTMIDI_API_NUM)
return "Unknown";
return rtmidi_api_names[api][1];
}
enum RtMidiApi rtmidi_compiled_api_by_name(const char *name) {
RtMidi::Api api = RtMidi::UNSPECIFIED;
if (name) {
api = RtMidi::getCompiledApiByName(name);
}
return (enum RtMidiApi)api;
}
void rtmidi_error (MidiApi *api, enum RtMidiErrorType type, const char* errorString)
{
std::string msg = errorString;
api->error ((RtMidiError::Type) type, msg);
}
void rtmidi_open_port (RtMidiPtr device, unsigned int portNumber, const char *portName)
{
std::string name = portName;
try {
((RtMidi*) device->ptr)->openPort (portNumber, name);
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
}
}
void rtmidi_open_virtual_port (RtMidiPtr device, const char *portName)
{
std::string name = portName;
try {
((RtMidi*) device->ptr)->openVirtualPort (name);
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
}
}
void rtmidi_close_port (RtMidiPtr device)
{
try {
((RtMidi*) device->ptr)->closePort ();
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
}
}
unsigned int rtmidi_get_port_count (RtMidiPtr device)
{
try {
return ((RtMidi*) device->ptr)->getPortCount ();
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return -1;
}
}
const char* rtmidi_get_port_name (RtMidiPtr device, unsigned int portNumber)
{
try {
std::string name = ((RtMidi*) device->ptr)->getPortName (portNumber);
return strdup (name.c_str ());
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return "";
}
}
/* RtMidiIn API */
RtMidiInPtr rtmidi_in_create_default ()
{
RtMidiWrapper* wrp = new RtMidiWrapper;
try {
RtMidiIn* rIn = new RtMidiIn ();
wrp->ptr = (void*) rIn;
wrp->data = 0;
wrp->ok = true;
wrp->msg = "";
} catch (const RtMidiError & err) {
wrp->ptr = 0;
wrp->data = 0;
wrp->ok = false;
wrp->msg = err.what ();
}
return wrp;
}
RtMidiInPtr rtmidi_in_create (enum RtMidiApi api, const char *clientName, unsigned int queueSizeLimit)
{
std::string name = clientName;
RtMidiWrapper* wrp = new RtMidiWrapper;
try {
RtMidiIn* rIn = new RtMidiIn ((RtMidi::Api) api, name, queueSizeLimit);
wrp->ptr = (void*) rIn;
wrp->data = 0;
wrp->ok = true;
wrp->msg = "";
} catch (const RtMidiError & err) {
wrp->ptr = 0;
wrp->data = 0;
wrp->ok = false;
wrp->msg = err.what ();
}
return wrp;
}
void rtmidi_in_free (RtMidiInPtr device)
{
if (device->data)
delete (CallbackProxyUserData*) device->data;
delete (RtMidiIn*) device->ptr;
delete device;
}
enum RtMidiApi rtmidi_in_get_current_api (RtMidiPtr device)
{
try {
return (RtMidiApi) ((RtMidiIn*) device->ptr)->getCurrentApi ();
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return RTMIDI_API_UNSPECIFIED;
}
}
static
void callback_proxy (double timeStamp, std::vector<unsigned char> *message, void *userData)
{
CallbackProxyUserData* data = reinterpret_cast<CallbackProxyUserData*> (userData);
data->c_callback (timeStamp, message->data (), message->size (), data->user_data);
}
void rtmidi_in_set_callback (RtMidiInPtr device, RtMidiCCallback callback, void *userData)
{
device->data = (void*) new CallbackProxyUserData (callback, userData);
try {
((RtMidiIn*) device->ptr)->setCallback (callback_proxy, device->data);
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
delete (CallbackProxyUserData*) device->data;
device->data = 0;
}
}
void rtmidi_in_cancel_callback (RtMidiInPtr device)
{
try {
((RtMidiIn*) device->ptr)->cancelCallback ();
delete (CallbackProxyUserData*) device->data;
device->data = 0;
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
}
}
void rtmidi_in_ignore_types (RtMidiInPtr device, bool midiSysex, bool midiTime, bool midiSense)
{
((RtMidiIn*) device->ptr)->ignoreTypes (midiSysex, midiTime, midiSense);
}
double rtmidi_in_get_message (RtMidiInPtr device,
unsigned char *message,
size_t *size)
{
try {
// FIXME: use allocator to achieve efficient buffering
std::vector<unsigned char> v;
double ret = ((RtMidiIn*) device->ptr)->getMessage (&v);
if (v.size () > 0 && v.size() <= *size) {
memcpy (message, v.data (), (int) v.size ());
}
*size = v.size();
return ret;
}
catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return -1;
}
catch (...) {
device->ok = false;
device->msg = "Unknown error";
return -1;
}
}
/* RtMidiOut API */
RtMidiOutPtr rtmidi_out_create_default ()
{
RtMidiWrapper* wrp = new RtMidiWrapper;
try {
RtMidiOut* rOut = new RtMidiOut ();
wrp->ptr = (void*) rOut;
wrp->data = 0;
wrp->ok = true;
wrp->msg = "";
} catch (const RtMidiError & err) {
wrp->ptr = 0;
wrp->data = 0;
wrp->ok = false;
wrp->msg = err.what ();
}
return wrp;
}
RtMidiOutPtr rtmidi_out_create (enum RtMidiApi api, const char *clientName)
{
RtMidiWrapper* wrp = new RtMidiWrapper;
std::string name = clientName;
try {
RtMidiOut* rOut = new RtMidiOut ((RtMidi::Api) api, name);
wrp->ptr = (void*) rOut;
wrp->data = 0;
wrp->ok = true;
wrp->msg = "";
} catch (const RtMidiError & err) {
wrp->ptr = 0;
wrp->data = 0;
wrp->ok = false;
wrp->msg = err.what ();
}
return wrp;
}
void rtmidi_out_free (RtMidiOutPtr device)
{
delete (RtMidiOut*) device->ptr;
delete device;
}
enum RtMidiApi rtmidi_out_get_current_api (RtMidiPtr device)
{
try {
return (RtMidiApi) ((RtMidiOut*) device->ptr)->getCurrentApi ();
} catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return RTMIDI_API_UNSPECIFIED;
}
}
int rtmidi_out_send_message (RtMidiOutPtr device, const unsigned char *message, int length)
{
try {
((RtMidiOut*) device->ptr)->sendMessage (message, length);
return 0;
}
catch (const RtMidiError & err) {
device->ok = false;
device->msg = err.what ();
return -1;
}
catch (...) {
device->ok = false;
device->msg = "Unknown error";
return -1;
}
}