Audaspace  1.6.0
A high level audio library.
WASAPIDevice.h
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1 /*******************************************************************************
2  * Copyright 2009-2016 Jörg Müller
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
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9  *
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13  * See the License for the specific language governing permissions and
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16 
17 #pragma once
18 
19 #ifdef WASAPI_PLUGIN
20 #define AUD_BUILD_PLUGIN
21 #endif
22 
29 #include "devices/ThreadedDevice.h"
30 
31 #include <thread>
32 
33 #include <windows.h>
34 #include <audioclient.h>
35 #include <mmdeviceapi.h>
36 #include <mmreg.h>
37 #include <wrl/client.h>
38 
40 
41 using Microsoft::WRL::ComPtr;
42 
46 class AUD_PLUGIN_API WASAPIDevice : IMMNotificationClient, public ThreadedDevice
47 {
48 private:
49  int m_buffersize;
50  ComPtr<IMMDeviceEnumerator> m_imm_device_enumerator;
51  ComPtr<IMMDevice> m_imm_device;
52  ComPtr<IAudioClient> m_audio_client;
53  WAVEFORMATEXTENSIBLE m_wave_format_extensible;
54  bool m_default_device_changed;
55  LONG m_reference_count;
56 
57  AUD_LOCAL HRESULT setupRenderClient(IAudioRenderClient*& render_client, UINT32& buffer_size);
58 
62  AUD_LOCAL void runMixingThread();
63 
64  AUD_LOCAL bool setupDevice(DeviceSpecs& specs);
65 
66  // IUnknown implementation
67  ULONG STDMETHODCALLTYPE AddRef();
68  ULONG STDMETHODCALLTYPE Release();
69  HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject);
70  // IMMNotificationClient implementation
71  HRESULT STDMETHODCALLTYPE OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState);
72  HRESULT STDMETHODCALLTYPE OnDeviceAdded(LPCWSTR pwstrDeviceId);
73  HRESULT STDMETHODCALLTYPE OnDeviceRemoved(LPCWSTR pwstrDeviceId);
74  HRESULT STDMETHODCALLTYPE OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDeviceId);
75  HRESULT STDMETHODCALLTYPE OnPropertyValueChanged(LPCWSTR pwstrDeviceId, const PROPERTYKEY key);
76 
77  // delete copy constructor and operator=
78  WASAPIDevice(const WASAPIDevice&) = delete;
79  WASAPIDevice& operator=(const WASAPIDevice&) = delete;
80 
81 public:
89  WASAPIDevice(DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);
90 
94  virtual ~WASAPIDevice();
95 
99  static void registerPlugin();
100 };
101 
This device extends the SoftwareDevice with code for running mixing in a separate thread...
Definition: ThreadedDevice.h:34
#define AUD_NAMESPACE_BEGIN
Opens the audaspace namespace aud.
Definition: Audaspace.h:116
The ThreadedDevice class.
#define AUD_DEFAULT_BUFFER_SIZE
The default playback buffer size of a device.
Definition: Audaspace.h:103
Specification of a sound device.
Definition: Specification.h:128
#define AUD_NAMESPACE_END
Closes the audaspace namespace aud.
Definition: Audaspace.h:119
This device plays back through WASAPI, the Windows audio API.
Definition: WASAPIDevice.h:46
#define AUD_PLUGIN_API
Used for exporting symbols in the shared library.
Definition: Audaspace.h:94
#define AUD_LOCAL
Used for hiding symbols from export in the shared library.
Definition: Audaspace.h:80