This new implementation overcomes current limitation of Pa_GetDeviceCount() API which gives constant device count by making WASAPI device list constant (32 devices by default) where 32 device slots can either be filled with a real device info or be empty for a future device changes.
Constant device list size can be altered by PA_WASAPI_MAX_CONST_DEVICE_COUNT define during a compile time. If PA_WASAPI_MAX_CONST_DEVICE_COUNT is set to 0 then PaWasapi_UpdateDeviceList() will be unavailable as well as dynamic device list update functionality.
This implementation also detects the audio device format change if user alters it via Windows Audio Controller GUI.
This implementation also makes WASAPI backend ready for a future implementation of device list updates via PortAudio public API. See internal PaError UpdateDeviceList().
- fixed alignment missing for host buffer if overall buffer size was set to less than 3ms that results in device timeout
- advanced Event driven mode and extended the range of host buffer size which can operate in this mode up up to 20.66 ms, e.g. your device buffer size will vary in range 3 - 20.66 ms, if goes above then Poll driven mode is switched on automatically
- added functionality to enumerate jacks and their description
- added example which demonstrates jacks enumeration technique
Thanks Reid Bishop for providing the idea for this extended functionality and patch with implementation.
- new method PaWasapi_GetFramesPerHostBuffer which allows to get number of input/output frames per host (WASAPI) buffer, this method helps to find out maximal values for PaWasapiHostProcessorCallback
- documentation fixes
- Callback/Blocking interface
- Playback/Capture
- Shared/Exclusive mode
to compile you must have installed recent Windows SDK(Vista SDK or higher) and min Visual Studio 2005 SP1. WASAPI is enabled by default, to disable you must define PA_NO_WASAPI prior compilation.
