1/**************************************************************************/
2/* midi_driver_coremidi.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "midi_driver_coremidi.h"
32
33#ifdef COREMIDI_ENABLED
34
35#include "core/string/print_string.h"
36
37#import <CoreAudio/HostTime.h>
38#import <CoreServices/CoreServices.h>
39
40void MIDIDriverCoreMidi::read(const MIDIPacketList *packet_list, void *read_proc_ref_con, void *src_conn_ref_con) {
41 MIDIPacket *packet = const_cast<MIDIPacket *>(packet_list->packet);
42 for (UInt32 i = 0; i < packet_list->numPackets; i++) {
43 receive_input_packet(packet->timeStamp, packet->data, packet->length);
44 packet = MIDIPacketNext(packet);
45 }
46}
47
48Error MIDIDriverCoreMidi::open() {
49 CFStringRef name = CFStringCreateWithCString(nullptr, "Godot", kCFStringEncodingASCII);
50 OSStatus result = MIDIClientCreate(name, nullptr, nullptr, &client);
51 CFRelease(name);
52 if (result != noErr) {
53 ERR_PRINT("MIDIClientCreate failed, code: " + itos(result));
54 return ERR_CANT_OPEN;
55 }
56
57 result = MIDIInputPortCreate(client, CFSTR("Godot Input"), MIDIDriverCoreMidi::read, (void *)this, &port_in);
58 if (result != noErr) {
59 ERR_PRINT("MIDIInputPortCreate failed, code: " + itos(result));
60 return ERR_CANT_OPEN;
61 }
62
63 int sources = MIDIGetNumberOfSources();
64 for (int i = 0; i < sources; i++) {
65 MIDIEndpointRef source = MIDIGetSource(i);
66 if (source) {
67 MIDIPortConnectSource(port_in, source, (void *)this);
68 connected_sources.insert(i, source);
69 }
70 }
71
72 return OK;
73}
74
75void MIDIDriverCoreMidi::close() {
76 for (int i = 0; i < connected_sources.size(); i++) {
77 MIDIEndpointRef source = connected_sources[i];
78 MIDIPortDisconnectSource(port_in, source);
79 }
80 connected_sources.clear();
81
82 if (port_in != 0) {
83 MIDIPortDispose(port_in);
84 port_in = 0;
85 }
86
87 if (client != 0) {
88 MIDIClientDispose(client);
89 client = 0;
90 }
91}
92
93PackedStringArray MIDIDriverCoreMidi::get_connected_inputs() {
94 PackedStringArray list;
95
96 for (int i = 0; i < connected_sources.size(); i++) {
97 MIDIEndpointRef source = connected_sources[i];
98 CFStringRef ref = nullptr;
99 char name[256];
100
101 MIDIObjectGetStringProperty(source, kMIDIPropertyDisplayName, &ref);
102 CFStringGetCString(ref, name, sizeof(name), kCFStringEncodingUTF8);
103 CFRelease(ref);
104
105 list.push_back(name);
106 }
107
108 return list;
109}
110
111MIDIDriverCoreMidi::MIDIDriverCoreMidi() {}
112
113MIDIDriverCoreMidi::~MIDIDriverCoreMidi() {
114 close();
115}
116
117#endif // COREMIDI_ENABLED
118