OpenTTD: src/music/cocoa_m.cpp Source File

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cocoa_m.cpp
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1 /* $Id: cocoa_m.cpp 27675 2016-10-31 19:29:01Z michi_cc $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
16 #ifdef WITH_COCOA
17
18 #include "../stdafx.h"
19 #include "../os/macosx/macos.h"
20 #include "cocoa_m.h"
21 #include "../debug.h"
22
23 #define Rect OTTDRect
24 #define Point OTTDPoint
25 #include <CoreServices/CoreServices.h>
26 #include <AudioUnit/AudioUnit.h>
27 #include <AudioToolbox/AudioToolbox.h>
28 #undef Rect
29 #undef Point
30
31 #include "../safeguards.h"
32
33 #if !defined(HAVE_OSX_1011_SDK)
34 #define kMusicSequenceFile_AnyType 0
35 #endif
36
37 static FMusicDriver_Cocoa iFMusicDriver_Cocoa;
38
39
40 static MusicPlayer _player = NULL;
41 static MusicSequence _sequence = NULL;
42 static MusicTimeStamp _seq_length = 0;
43 static bool _playing = false;
44 static byte _volume = 127;
45
46
48 static void DoSetVolume()
49 {
50 if (_sequence == NULL) return;
51
52 AUGraph graph;
53 MusicSequenceGetAUGraph(_sequence, &graph);
54
55 AudioUnit output_unit = NULL;
56
57 /* Get output audio unit */
58 UInt32 node_count = 0;
59 AUGraphGetNodeCount(graph, &node_count);
60 for (UInt32 i = 0; i < node_count; i++) {
61 AUNode node;
62 AUGraphGetIndNode(graph, i, &node);
63
64 AudioUnit unit;
65 OSType comp_type = 0;
66
67 #if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
68 if (MacOSVersionIsAtLeast(10, 5, 0)) {
69 /* The 10.6 SDK has changed the function prototype of
70 * AUGraphNodeInfo. This is a binary compatible change,
71 * but we need to get the type declaration right or
72 * risk compilation errors. The header AudioComponent.h
73 * was introduced in 10.6 so use it to decide which
74 * type definition to use. */
75 #if defined(__AUDIOCOMPONENT_H__) || defined(HAVE_OSX_107_SDK)
76 AudioComponentDescription desc;
77 #else
78 ComponentDescription desc;
79 #endif
80 AUGraphNodeInfo(graph, node, &desc, &unit);
81 comp_type = desc.componentType;
82 } else
83 #endif
84 {
85 #if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
86 ComponentDescription desc;
87 AUGraphGetNodeInfo(graph, node, &desc, NULL, NULL, &unit);
88 comp_type = desc.componentType;
89 #endif
90 }
91
92 if (comp_type == kAudioUnitType_Output) {
93 output_unit = unit;
94 break;
95 }
96 }
97 if (output_unit == NULL) {
98 DEBUG(driver, 1, "cocoa_m: Failed to get output node to set volume");
99 return;
100 }
101
102 Float32 vol = _volume / 127.0f; // 0 - +127 -> 0.0 - 1.0
103 AudioUnitSetParameter(output_unit, kHALOutputParam_Volume, kAudioUnitScope_Global, 0, vol, 0);
104 }
105
106
110 const char *MusicDriver_Cocoa::Start(const char * const *parm)
111 {
112 if (NewMusicPlayer(&_player) != noErr) return "failed to create music player";
113
114 return NULL;
115 }
116
117
121 bool MusicDriver_Cocoa::IsSongPlaying()
122 {
123 if (!_playing) return false;
124
125 MusicTimeStamp time = 0;
126 MusicPlayerGetTime(_player, &time);
127 return time < _seq_length;
128 }
129
130
134 void MusicDriver_Cocoa::Stop()
135 {
136 if (_player != NULL) DisposeMusicPlayer(_player);
137 if (_sequence != NULL) DisposeMusicSequence(_sequence);
138 }
139
140
146 void MusicDriver_Cocoa::PlaySong(const char *filename)
147 {
148 DEBUG(driver, 2, "cocoa_m: trying to play '%s'", filename);
149
150 this->StopSong();
151 if (_sequence != NULL) {
152 DisposeMusicSequence(_sequence);
153 _sequence = NULL;
154 }
155
156 if (NewMusicSequence(&_sequence) != noErr) {
157 DEBUG(driver, 0, "cocoa_m: Failed to create music sequence");
158 return;
159 }
160
161 const char *os_file = OTTD2FS(filename);
162 CFURLRef url = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (const UInt8*)os_file, strlen(os_file), false);
163
164 #if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
165 if (MacOSVersionIsAtLeast(10, 5, 0)) {
166 if (MusicSequenceFileLoad(_sequence, url, kMusicSequenceFile_AnyType, 0) != noErr) {
167 DEBUG(driver, 0, "cocoa_m: Failed to load MIDI file");
168 CFRelease(url);
169 return;
170 }
171 } else
172 #endif
173 {
174 #if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
175 FSRef ref_file;
176 if (!CFURLGetFSRef(url, &ref_file)) {
177 DEBUG(driver, 0, "cocoa_m: Failed to make FSRef");
178 CFRelease(url);
179 return;
180 }
181 if (MusicSequenceLoadSMFWithFlags(_sequence, &ref_file, 0) != noErr) {
182 DEBUG(driver, 0, "cocoa_m: Failed to load MIDI file old style");
183 CFRelease(url);
184 return;
185 }
186 #endif
187 }
188 CFRelease(url);
189
190 /* Construct audio graph */
191 AUGraph graph = NULL;
192
193 MusicSequenceGetAUGraph(_sequence, &graph);
194 AUGraphOpen(graph);
195 if (AUGraphInitialize(graph) != noErr) {
196 DEBUG(driver, 0, "cocoa_m: Failed to initialize AU graph");
197 return;
198 }
199
200 /* Figure out sequence length */
201 UInt32 num_tracks;
202 MusicSequenceGetTrackCount(_sequence, &num_tracks);
203 _seq_length = 0;
204 for (UInt32 i = 0; i < num_tracks; i++) {
205 MusicTrack track = NULL;
206 MusicTimeStamp track_length = 0;
207 UInt32 prop_size = sizeof(MusicTimeStamp);
208 MusicSequenceGetIndTrack(_sequence, i, &track);
209 MusicTrackGetProperty(track, kSequenceTrackProperty_TrackLength, &track_length, &prop_size);
210 if (track_length > _seq_length) _seq_length = track_length;
211 }
212 /* Add 8 beats for reverb/long note release */
213 _seq_length += 8;
214
215 DoSetVolume();
216 MusicPlayerSetSequence(_player, _sequence);
217 MusicPlayerPreroll(_player);
218 if (MusicPlayerStart(_player) != noErr) return;
219 _playing = true;
220
221 DEBUG(driver, 3, "cocoa_m: playing '%s'", filename);
222 }
223
224
228 void MusicDriver_Cocoa::StopSong()
229 {
230 MusicPlayerStop(_player);
231 MusicPlayerSetSequence(_player, NULL);
232 _playing = false;
233 }
234
235
241 void MusicDriver_Cocoa::SetVolume(byte vol)
242 {
243 _volume = vol;
244 DoSetVolume();
245 }
246
247 #endif /* WITH_COCOA */