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Wwise SDK 2022.1.12
SinkDevices.h
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26 
27 /**
28  * \brief Wwise Authoring Plug-ins - Plug-in that lists supported output devices.
29  * \file AK/Wwise/Plugin/SinkDevices.h
30  *
31  * Provides a list of up-to-date device IDs that can be used to instantiate a new Sound Engine sink.
32  *
33  * \sa C interfaces
34  * - \ref ak_wwise_plugin_sink_devices_v1
35  *
36  * \sa C++ interfaces
37  * - \ref AK::Wwise::Plugin::SinkDevices
38  */
39 
40 #pragma once
41 
42 #include "PluginInfoGenerator.h"
43 
44 /**
45  * \brief Device enumerator for sink plug-ins.
46  *
47  * Allows your plug-in to provide a list of up-to-date device IDs that can be used to instantiate a new
48  * Sound Engine sink.
49  *
50  * This plug-in interface cannot be linked to a backend or a frontend plug-in, it must be standalone.
51  *
52  * \sa
53  * - \ref ak_wwise_plugin_sink_devices_instance_v1 instance type
54  * - \ref AK::Wwise::Plugin::SinkDevices C++ Interface
55  * - \ref AK_WWISE_PLUGIN_SINK_DEVICES_V1_ID Current ID for interface
56  * - \ref AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES
57  */
58 struct ak_wwise_plugin_sink_devices_v1
59 #ifdef __cplusplus
60  : public ak_wwise_plugin_base_interface
61 #endif
62 {
63 #ifndef __cplusplus
64  ak_wwise_plugin_base_interface m_baseInterface;
65 #endif
66 
67 #ifdef __cplusplus
68  using Instance = ak_wwise_plugin_sink_devices_instance_v1; ///< \copydoc ak_wwise_plugin_sink_devices_instance_v1
69 
70  ak_wwise_plugin_sink_devices_v1() :
71  ak_wwise_plugin_base_interface(AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES, 1)
72  {}
73 #endif
74 
75  /**
76  * \brief Get a count of the number of interfaces currently available.
77  *
78  * Provided by your plug-in, this should return a count.
79  *
80  * \aknote
81  * Due to the unpredictable nature of hardware configuration changes, an unpadded, basic system would return
82  * a configuration that can change between a GetCount and subsequent objects retrieval.
83  *
84  * As a plug-in designer, you are responsible to address this by returning adequate values that make sense as a whole.
85  *
86  * To guide you, Sink Devices interface is used for retrieval and data copy in a tight loop over a single thread
87  * at once. Host will retrieve the count, followed by the Name (GetName) and DeviceID (GetDeviceID), in the
88  * order the compiler sees fit. Data is expected to survive for the amount of time this tight loop exists.
89  *
90  * \code
91  * int count = m_interface->GetCount(m_instance);
92  * for (int i = 0; i < count; ++i)
93  * {
94  * result.emplace_back(
95  * m_interface->GetName(m_instance, i),
96  * m_interface->GetDeviceID(m_instance, i)
97  * );
98  * }
99  * \endcode
100  *
101  * A proposal is to use GetCount to internally retrieve the device names and IDs, make a static internal
102  * cache, and then return name and device ID based on this cache.
103  *
104  * You can also spawn an event listener or an update thread, and ensure the data is up to date when the calls
105  * come in, and block updates until all calls are accounted for.
106  * \endaknote
107  *
108  * \param[in] in_this Current instance of this interface.
109  * \return int Count of the number of interfaces available.
110  */
111  int(*GetCount)(const struct ak_wwise_plugin_sink_devices_instance_v1* in_this);
112 
113  /**
114  * \brief Get a user-presentable name for the device number in_num.
115  *
116  * Provided by your plug-in, this should return a const char* in UTF-8, valid at least until the next
117  * function call, and must not return duplicates or nullptr.
118  *
119  * It should return names that can be understood by an end user in the context of your plug-in.
120  *
121  * \param[in] in_this Current instance of this interface.
122  * \param[in] in_num Device number, from zero to the value, as retrieved by GetCount.
123  * \return const char* UTF-8 Name of the interface in_num.
124  *
125  * \sa \ref GetCount for a discussion on providing data in a multithread-aware environment.
126  */
127  const char*(*GetName)(const struct ak_wwise_plugin_sink_devices_instance_v1* in_this, int in_num);
128 
129  /**
130  * \brief Get a device ID for the device number in_num.
131  *
132  * Provided by your plug-in, this should return a uint32_t that can be understood by the Sound Engine part of
133  * your sink plug-in. It must not return duplicates or pointers, and the value should be applicable to the
134  * GetName call based on the same in_num.
135  *
136  * \param[in] in_this Current instance of this interface.
137  * \param[in] in_num Device number, from zero to the value, as retrieved by GetCount.
138  * \return uint32_t Device ID for the interface in_num.
139  *
140  * \sa \ref GetCount for a discussion on providing data in a multithread-aware environment.
141  */
142  uint32_t(*GetDeviceID)(const struct ak_wwise_plugin_sink_devices_instance_v1* in_this, int in_num);
143 };
144 #define AK_WWISE_PLUGIN_SINK_DEVICES_V1_ID() \
145  AK_WWISE_PLUGIN_BASE_INTERFACE_FROM_ID(AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES, 1)
146 #define AK_WWISE_PLUGIN_SINK_DEVICES_V1_CTOR(/* ak_wwise_plugin_info* */ in_pluginInfo, /* void* */ in_data) \
147 { \
148  .m_baseInterface = AK_WWISE_PLUGIN_BASE_INTERFACE_CTOR(AK_WWISE_PLUGIN_SINK_DEVICES_V1_ID(), in_pluginInfo, in_data) \
149 }
150 
151 
152 #ifdef __cplusplus
153 namespace AK::Wwise::Plugin
154 {
155  namespace V1
156  {
157  using CSinkDevices = ak_wwise_plugin_sink_devices_v1; ///< \copydoc ak_wwise_plugin_sink_devices_v1
158 
159  /**
160  * \brief C++ API to provide device enumeration for sink plug-ins.
161  *
162  * Allows your plug-in to provide a list of up-to-date device IDs that can be used to instantiate a new Sound
163  * Engine sink.
164  *
165  * This plug-in interface cannot be linked to a backend or a frontend plug-in, it must be standalone.
166  *
167  * \sa
168  * - \ref ak_wwise_plugin_sink_devices_v1 C interface
169  * - \ref AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES
170  */
171  class SinkDevices : public CSinkDevices::Instance
172  {
173  public:
174  /**
175  * \copydoc CSinkDevices::Instance
176  */
177  using Instance = CSinkDevices::Instance;
178 
179  /**
180  * \brief The interface type, as provided by this plug-in.
181  */
182  enum : InterfaceTypeValue
183  {
184  /**
185  * \brief The interface type, as provided by this plug-in.
186  */
187  k_interfaceType = AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES
188  };
189  /**
190  * \brief The interface version, as provided by this plug-in.
191  */
192  enum : InterfaceVersion
193  {
194  /**
195  * \brief The interface version, as provided by this plug-in.
196  */
197  k_interfaceVersion = 1
198  };
199 
200  /**
201  * \brief The C interface, fulfilled by your plug-in.
202  */
203  struct Interface : public CSinkDevices
204  {
205  using Instance = SinkDevices; ///< \copydoc SinkDevices
206  Interface()
207  {
208  CSinkDevices::GetCount = [](const struct ak_wwise_plugin_sink_devices_instance_v1* in_this) { return static_cast<const Instance*>(in_this)->GetCount(); };
209  CSinkDevices::GetName = [](const struct ak_wwise_plugin_sink_devices_instance_v1* in_this, int in_num) { return static_cast<const Instance*>(in_this)->GetName(in_num); };
210  CSinkDevices::GetDeviceID = [](const struct ak_wwise_plugin_sink_devices_instance_v1* in_this, int in_num) { return static_cast<const Instance*>(in_this)->GetDeviceID(in_num); };
211  }
212  };
213 
214  /**
215  * \internal
216  * \brief Get the static Interface object, as used internally in AK::Wwise::Plugin::PluginInfoGenerator.
217  */
218  InterfacePtr GetInterfacePointer() {
219  static Interface g_interface;
220  return &g_interface;
221  }
222 
223  /**
224  * \internal
225  * \brief Get the static Instance object, as used internally in AK::Wwise::Plugin::PluginInfoGenerator.
226  */
227  CSinkDevices::Instance* GetInstancePointer() {
228  return this;
229  }
230 
231  /**
232  * \internal
233  * \brief Get the static Instance object, as used internally in AK::Wwise::Plugin::PluginInfoGenerator.
234  */
235  const CSinkDevices::Instance* GetInstancePointer() const {
236  return this;
237  }
238 
239  SinkDevices() :
240  CSinkDevices::Instance()
241  {
242  }
243 
244  virtual ~SinkDevices() {}
245 
246  /**
247  * \brief Get a count of the number of interfaces currently available.
248  *
249  * Provided by your plug-in, this should return a count.
250  *
251  * \aknote
252  * Due to the unpredictable nature of hardware configuration changes, an unpadded, basic system would return
253  * a configuration that can change between a GetCount and subsequent objects retrieval.
254  *
255  * As a plug-in designer, you are responsible to address this by returning adequate values that make sense as a whole.
256  *
257  * To guide you, Sink Devices interface is used for retrieval and data copy in a tight loop over a single thread
258  * at once. Host will retrieve the count, followed by the Name (GetName) and DeviceID (GetDeviceID), in the
259  * order the compiler sees fit. Data is expected to survive for the amount of time this tight loop exists.
260  *
261  * \code
262  * int count = m_interface->GetCount(m_instance);
263  * for (int i = 0; i < count; ++i)
264  * {
265  * result.emplace_back(
266  * m_interface->GetName(m_instance, i),
267  * m_interface->GetDeviceID(m_instance, i)
268  * );
269  * }
270  * \endcode
271  *
272  * A proposal is to use GetCount to internally retrieve the device names and IDs, make a static internal
273  * cache, and then return name and device ID based on this cache.
274  *
275  * You can also spawn an event listener or an update thread, and ensure the data is up to date when the calls
276  * come in, and block updates until all calls are accounted for.
277  * \endaknote
278  *
279  * \return int Count of the number of interfaces available.
280  */
281  virtual int GetCount() const = 0;
282 
283  /**
284  * \brief Get a user-presentable name for the device number in_num.
285  *
286  * Provided by your plug-in, this should return a const char* in UTF-8, valid at least until the next
287  * function call, and must not return duplicates or nullptr.
288  *
289  * It should return names that can be understood by an end user in the context of your plug-in.
290  *
291  * \param[in] in_num Device number, from zero to the value, as retrieved by GetCount.
292  * \return const char* UTF-8 Name of the interface in_num.
293  *
294  * \sa \ref GetCount for a discussion on providing data in a multithread-aware environment.
295  */
296  virtual const char* GetName(int in_num) const = 0;
297 
298  /**
299  * \brief Get a device ID for the device number in_num.
300  *
301  * Provided by your plug-in, this should return a uint32_t that can be understood by the Sound Engine part of
302  * your sink plug-in. It must not return duplicates or pointers, and the value should be applicable to the
303  * GetName call based on the same in_num.
304  *
305  * \param[in] in_num Device number, from zero to the value, as retrieved by GetCount.
306  * \return uint32_t Device ID for the interface in_num.
307  *
308  * \sa \ref GetCount for a discussion on providing data in a multithread-aware environment.
309  */
310  virtual uint32_t GetDeviceID(int in_num) const = 0;
311  };
312  } // of namespace V1
313 
314  /// Latest version of the C SinkDevices interface.
315  using CSinkDevices = V1::CSinkDevices;
316  /// Latest version of the C++ SinkDevices interface.
317  using SinkDevices = V1::SinkDevices;
318 
319  AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_CLASS(SinkDevices);
320  AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_VERSION(SinkDevices);
321 } // of namespace AK::Wwise::Plugin
322 
323 #endif // of __cplusplus
AK.Wwise::Plugin::V1::SinkDevices
C++ API to provide device enumeration for sink plug-ins.
Definition: SinkDevices.h:172
ak_wwise_plugin_sink_devices_v1::ak_wwise_plugin_sink_devices_v1
ak_wwise_plugin_sink_devices_v1()
Definition: SinkDevices.h:70
ak_wwise_plugin_sink_devices_v1::GetCount
int(* GetCount)(const struct ak_wwise_plugin_sink_devices_instance_v1 *in_this)
Get a count of the number of interfaces currently available.
Definition: SinkDevices.h:111
AK.Wwise::Plugin::V1::SinkDevices::GetCount
virtual int GetCount() const =0
Get a count of the number of interfaces currently available.
AK.Wwise::Plugin::V1::CSinkDevices
ak_wwise_plugin_sink_devices_v1 CSinkDevices
Device enumerator for sink plug-ins.
Definition: SinkDevices.h:157
AK.Wwise::Plugin::InterfaceVersion
decltype(BaseInterface::m_version) InterfaceVersion
PluginInfoGenerator: Type for the m_version value in BaseInterface.
Definition: PluginInfoGenerator.h:50
ak_wwise_plugin_sink_devices_v1
Device enumerator for sink plug-ins.
Definition: SinkDevices.h:62
AK.Wwise::Plugin::V1::SinkDevices::k_interfaceVersion
@ k_interfaceVersion
The interface version, as provided by this plug-in.
Definition: SinkDevices.h:197
AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES
@ AK_WWISE_PLUGIN_INTERFACE_TYPE_SINK_DEVICES
2021.1 Sink Devices enumeration plug-in. ak_wwise_plugin_sink_devices_v1
Definition: PluginBaseInterface.h:69
AK.Wwise::Plugin::V1::SinkDevices::GetInstancePointer
const CSinkDevices::Instance * GetInstancePointer() const
Definition: SinkDevices.h:235
PluginInfoGenerator.h
Wwise Authoring Plug-ins - C++ class helper to automatically determine the plug-in interfaces used in...
AK.Wwise::Plugin::InterfacePtr
CInterfacePtr InterfacePtr
Definition: PluginDef.h:980
AK.Wwise::Plugin::V1::SinkDevices::Interface
The C interface, fulfilled by your plug-in.
Definition: SinkDevices.h:204
ak_wwise_plugin_sink_devices_v1::GetDeviceID
uint32_t(* GetDeviceID)(const struct ak_wwise_plugin_sink_devices_instance_v1 *in_this, int in_num)
Get a device ID for the device number in_num.
Definition: SinkDevices.h:142
ak_wwise_plugin_sink_devices_instance_v1
Base instance type for providing a device list for your custom sink through ak_wwise_plugin_sink_devi...
Definition: PluginDef.h:897
AK.Wwise::Plugin::V1::SinkDevices::k_interfaceType
@ k_interfaceType
The interface type, as provided by this plug-in.
Definition: SinkDevices.h:187
AK.Wwise::Plugin::InterfaceTypeValue
std::underlying_type< InterfaceType >::type InterfaceTypeValue
PluginInfoGenerator: Underlying storage type for the m_interface value in BaseInterface.
Definition: PluginInfoGenerator.h:49
AK.Wwise::Plugin::V1::SinkDevices::GetInstancePointer
CSinkDevices::Instance * GetInstancePointer()
Definition: SinkDevices.h:227
AK.Wwise::Plugin::AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_VERSION
AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_VERSION(AudioPlugin)
ak_wwise_plugin_sink_devices_v1::GetName
const char *(* GetName)(const struct ak_wwise_plugin_sink_devices_instance_v1 *in_this, int in_num)
Get a user-presentable name for the device number in_num.
Definition: SinkDevices.h:127
AK.Wwise::Plugin::V1::SinkDevices::GetName
virtual const char * GetName(int in_num) const =0
Get a user-presentable name for the device number in_num.
ak_wwise_plugin_base_interface
Interface description and base class for every Wwise Authoring plug-in interface.
Definition: PluginBaseInterface.h:120
ak_wwise_plugin_sink_devices_v1::Instance
ak_wwise_plugin_sink_devices_instance_v1 Instance
Base instance type for providing a device list for your custom sink through ak_wwise_plugin_sink_devi...
Definition: SinkDevices.h:68
AK.Wwise::Plugin::V1::SinkDevices::GetDeviceID
virtual uint32_t GetDeviceID(int in_num) const =0
Get a device ID for the device number in_num.
AK.Wwise::Plugin::SinkDevices
V1::SinkDevices SinkDevices
Latest version of the C++ SinkDevices interface.
Definition: SinkDevices.h:317
AK.Wwise::Plugin::AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_CLASS
AK_WWISE_PLUGIN_SPECIALIZE_INTERFACE_CLASS(AudioPlugin)

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