Jack2: TiPhoneCoreAudioRenderer.h Source File

Jack2 1.9.12

TiPhoneCoreAudioRenderer.h
1 /*
2 Copyright (C) 2010 Grame
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18 */
19
20 #ifndef __TiPhoneCoreAudioRenderer__
21 #define __TiPhoneCoreAudioRenderer__
22
23 #include <AudioToolbox/AudioConverter.h>
24 #include <AudioToolbox/AudioServices.h>
25 #include <AudioUnit/AudioUnit.h>
26
27 #define MAX_CHANNELS 256
28 #define OPEN_ERR -1
29 #define NO_ERR 0
30
31 typedef void (*AudioCallback) (int frames, float** inputs, float** outputs, void* arg);
32
33 class TiPhoneCoreAudioRenderer
34 {
35
36 private:
37
38 AudioUnit fAUHAL;
39 AudioCallback fAudioCallback;
40 void* fCallbackArg;
41
42 int fDevNumInChans;
43 int fDevNumOutChans;
44
45 AudioBufferList* fCAInputData;
46
47 float* fInChannel[MAX_CHANNELS];
48 float* fOutChannel[MAX_CHANNELS];
49
50 static OSStatus Render(void *inRefCon,
51 AudioUnitRenderActionFlags *ioActionFlags,
52 const AudioTimeStamp *inTimeStamp,
53 UInt32 inBusNumber,
54 UInt32 inNumberFrames,
55 AudioBufferList *ioData);
56
57 static void InterruptionListener(void *inClientData, UInt32 inInterruption);
58
59 public:
60
61 TiPhoneCoreAudioRenderer(int input, int output)
62 :fAudioCallback(NULL), fCallbackArg(NULL), fDevNumInChans(input), fDevNumOutChans(output), fCAInputData(NULL)
63 {
64 memset(fInChannel, 0, sizeof(float*) * MAX_CHANNELS);
65 memset(fOutChannel, 0, sizeof(float*) * MAX_CHANNELS);
66
67 for (int i = 0; i < fDevNumInChans; i++) {
68 fInChannel[i] = new float[8192];
69 }
70
71 for (int i = 0; i < fDevNumOutChans; i++) {
72 fOutChannel[i] = new float[8192];
73 }
74 }
75
76 virtual ~TiPhoneCoreAudioRenderer()
77 {
78 for (int i = 0; i < fDevNumInChans; i++) {
79 delete[] fInChannel[i];
80 }
81
82 for (int i = 0; i < fDevNumOutChans; i++) {
83 delete[] fOutChannel[i];
84 }
85
86 if (fCAInputData) {
87 for (int i = 0; i < fDevNumInChans; i++) {
88 free(fCAInputData->mBuffers[i].mData);
89 }
90 free(fCAInputData);
91 }
92 }
93
94 int Open(int bufferSize, int sampleRate);
95 int Close();
96
97 int Start();
98 int Stop();
99
100 void SetAudioCallback(AudioCallback callback, void* arg)
101 {
102 fAudioCallback = callback;
103 fCallbackArg = arg;
104 }
105
106 void PerformAudioCallback(int frames)
107 {
108 if (fAudioCallback) {
109 fAudioCallback(frames, fInChannel, fOutChannel, fCallbackArg);
110 }
111 }
112
113 };
114
115 typedef TiPhoneCoreAudioRenderer * TiPhoneCoreAudioRendererPtr;
116
117 #endif
TiPhoneCoreAudioRenderer
Definition: TiPhoneCoreAudioRenderer.h:33