1 |
/*************************************************************************** |
2 |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
5 |
* Copyright (C) 2009 Grigor Iliev * |
6 |
* * |
7 |
* This program is free software; you can redistribute it and/or modify * |
8 |
* it under the terms of the GNU General Public License as published by * |
9 |
* the Free Software Foundation; either version 2 of the License, or * |
10 |
* (at your option) any later version. * |
11 |
* * |
12 |
* This program is distributed in the hope that it will be useful, * |
13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
15 |
* GNU General Public License for more details. * |
16 |
* * |
17 |
* You should have received a copy of the GNU General Public License * |
18 |
* along with this program; if not, write to the Free Software * |
19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
20 |
* MA 02111-1307 USA * |
21 |
***************************************************************************/ |
22 |
|
23 |
#ifndef _AUDIOOUTPUTDEVICECOREAUDIO_H |
24 |
#define _AUDIOOUTPUTDEVICECOREAUDIO_H |
25 |
|
26 |
#include "../../common/atomic.h" |
27 |
#include "../../common/Mutex.h" |
28 |
#include "../../common/Thread.h" |
29 |
|
30 |
#include "AudioOutputDevice.h" |
31 |
|
32 |
#include <AudioToolbox/AudioToolbox.h> |
33 |
#include <CoreAudio/CoreAudio.h> |
34 |
|
35 |
namespace LinuxSampler { |
36 |
|
37 |
/** Core Audio audio output driver |
38 |
* |
39 |
* Implements audio output to the Core Audio architecture. |
40 |
*/ |
41 |
class AudioOutputDeviceCoreAudio : public AudioOutputDevice, protected Thread { |
42 |
private: |
43 |
struct AQPlayerState { |
44 |
AudioStreamBasicDescription mDataFormat; |
45 |
AudioQueueRef mQueue; |
46 |
AudioQueueBufferRef* mBuffers; |
47 |
UInt32 bufferByteSize; |
48 |
UInt32 mNumPacketsToRead; |
49 |
atomic_t mIsRunning; |
50 |
AudioOutputDeviceCoreAudio* pDevice; // needed for the callback |
51 |
}; |
52 |
|
53 |
struct DeviceInfo { |
54 |
uint uiSamplerate; |
55 |
uint uiChannelNumber; |
56 |
}; |
57 |
|
58 |
public: |
59 |
AudioOutputDeviceCoreAudio(std::map<String,DeviceCreationParameter*> Parameters); |
60 |
virtual ~AudioOutputDeviceCoreAudio(); |
61 |
|
62 |
// derived abstract methods from class 'AudioOutputDevice' |
63 |
virtual void Play(); |
64 |
virtual bool IsPlaying(); |
65 |
virtual void Stop(); |
66 |
virtual uint MaxSamplesPerCycle(); |
67 |
virtual uint SampleRate(); |
68 |
virtual String Driver(); |
69 |
virtual AudioChannel* CreateChannel(uint ChannelNr); |
70 |
|
71 |
static String Name(); |
72 |
static String Description(); |
73 |
static String Version(); |
74 |
|
75 |
|
76 |
// *************** PARAMETERS *************** |
77 |
|
78 |
/** Device Parameter 'SAMPLERATE' |
79 |
* |
80 |
* Used to set the sample rate of the audio output device. |
81 |
*/ |
82 |
class ParameterSampleRate : public AudioOutputDevice::ParameterSampleRate { |
83 |
public: |
84 |
ParameterSampleRate(); |
85 |
ParameterSampleRate(String s); |
86 |
virtual optional<int> DefaultAsInt(std::map<String,String> Parameters); |
87 |
}; |
88 |
|
89 |
/** Device Parameters 'CHANNELS' |
90 |
* |
91 |
* Used to increase / decrease the number of audio channels of |
92 |
* audio output device. |
93 |
*/ |
94 |
class ParameterChannels : public AudioOutputDevice::ParameterChannels { |
95 |
public: |
96 |
ParameterChannels(); |
97 |
ParameterChannels(String s); |
98 |
virtual optional<int> DefaultAsInt(std::map<String,String> Parameters); |
99 |
}; |
100 |
|
101 |
/** Device Parameter 'BUFFERS' |
102 |
* |
103 |
* Used to select the number of audio buffers. |
104 |
*/ |
105 |
class ParameterBuffers : public DeviceCreationParameterInt { |
106 |
public: |
107 |
ParameterBuffers(); |
108 |
ParameterBuffers(String s) throw (Exception); |
109 |
virtual String Description(); |
110 |
virtual bool Fix(); |
111 |
virtual bool Mandatory(); |
112 |
virtual std::map<String,DeviceCreationParameter*> DependsAsParameters(); |
113 |
virtual optional<int> DefaultAsInt(std::map<String,String> Parameters); |
114 |
virtual optional<int> RangeMinAsInt(std::map<String,String> Parameters); |
115 |
virtual optional<int> RangeMaxAsInt(std::map<String,String> Parameters); |
116 |
virtual std::vector<int> PossibilitiesAsInt(std::map<String,String> Parameters); |
117 |
virtual void OnSetValue(int i) throw (Exception); |
118 |
static String Name(); |
119 |
}; |
120 |
|
121 |
/** Device Parameter 'BUFFERSIZE' |
122 |
* |
123 |
* Used to set the audio buffer size in sample frames. |
124 |
*/ |
125 |
class ParameterBufferSize : public DeviceCreationParameterInt { |
126 |
public: |
127 |
ParameterBufferSize(); |
128 |
ParameterBufferSize(String s) throw (Exception); |
129 |
virtual String Description(); |
130 |
virtual bool Fix(); |
131 |
virtual bool Mandatory(); |
132 |
virtual std::map<String,DeviceCreationParameter*> DependsAsParameters(); |
133 |
virtual optional<int> DefaultAsInt(std::map<String,String> Parameters); |
134 |
virtual optional<int> RangeMinAsInt(std::map<String,String> Parameters); |
135 |
virtual optional<int> RangeMaxAsInt(std::map<String,String> Parameters); |
136 |
virtual std::vector<int> PossibilitiesAsInt(std::map<String,String> Parameters); |
137 |
virtual void OnSetValue(int i) throw (Exception); |
138 |
static String Name(); |
139 |
}; |
140 |
|
141 |
protected: |
142 |
int Main(); ///< Implementation of virtual method from class Thread |
143 |
|
144 |
private: |
145 |
uint uiCoreAudioChannels; |
146 |
uint uiBufferNumber; // once initialized this value shouldn't be changed |
147 |
uint uiBufferSize; // once initialized this value shouldn't be changed |
148 |
AQPlayerState aqPlayerState; |
149 |
atomic_t pausedNew; |
150 |
uint pausedOld; |
151 |
Mutex destroyMutex; |
152 |
|
153 |
static DeviceInfo* pDeviceInfo; |
154 |
|
155 |
static void HandleOutputBuffer(void *aqData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer); |
156 |
static void SetAudioDataFormat(AudioStreamBasicDescription* pDataFormat); |
157 |
static DeviceInfo* GetDeviceInfo(); |
158 |
}; |
159 |
} // namespace LinuxSampler |
160 |
|
161 |
#endif /* _AUDIOOUTPUTDEVICECOREAUDIO_H */ |