- fixed AUDCLNT_E_INVALID_DEVICE_PERIOD under Windows 7 if latency is set to lower than minimal device period
- fixed AUDCLNT_E_INVALID_DEVICE_PERIOD under Windows 7 if latency for Exclusive mode is higher than 500ms, for Shared mode higher than 2000ms
- fixed int24 Mono to Stereo mixer (affects Mono streams starting in Exclusive mode)
pa_converters:
- avoid using 64-bit integer math for Int24_To_Float32 and Int24_To_Int32 under x64 Posix platforms (long is 64-bit there), now using explicit PaInt32 type
- fixed bug when Exclusive mode was wrongly opening Stereo stream if Mono stream was requested (note: WASAPI device usually does not support Mono in Exclusive mode), resulted in distorted sound
- implemented workaround for WASAPI limitation - in Exclusive mode Mono stream is not supported: now PA creates internal audio device in Stereo mode, and after callback call Mono data is mixed into Stereo output, this workaround is not supported for Blocking mode. all this is done transparent for user, automatically.
and Stephane Letz with the following details:
"When using paMacCoreChangeDeviceParameters option of PaMacCore_SetupStreamInfo, if the sample rate used in PortAudio do not match the one on the hardware, it automatically switches the hardware samplerate. This functionality stopped working on 10.6 and was blocking the application when trying to change the hardware samplerate (infinite wait) It now works fine on 10.6 as it used to on previous OSX version."
- fixed configure.in to compile WASAPI module under MSYS
- fixed include name cases for case-sensitive build environments
- defined LPCGUID for some MinGW compilers which are missing it
- fixed strict-aliasing rules break on line of getting device EndpointFormFactor in case '-Wstrict-aliasing' is specified or corresponding GCC optimization flag is used
- converted PA WASAPI module to pure C
- implemented compilation support for GCC [MinGW(32-bit)/MinGW64(64-bit)] compiler, special notes regarding MinGW compilation are included in 'readme.txt' file
- removed dependency from strsafe.h
- fixed crash in InitializeHostApis() if PaWasapi_Initialize() failed due to internal WASAPI error (error code was returned as paNoError in such case)
- fixed dependency of framesPerBuffer parameter in Pa_OpenStream and latency (now only latency setting affects device latency which is correct behavior);
- paFramesPerBufferUnspecified is now supported for Pa_OpenStream;
- sound distortion fixed for Shared mode if framesPerBuffer is lower than device limit and when latency was set to 0;
- fixed timeout for Exclusive mode due to buffer misalignment;
- improved precision of DAC/ADC time for running stream;
- avoided memory leaks on failure of Pa_OpenStream;
- NULL checks on stream pointer for all external methods;
- correct host buffer mode for paWinWasapiPolling mode to deliver fixed number of frames to user space;
- implemented workaround for Vista x64 WOW64 bug if Event-mode is used for Shared mode (due to incorrect Event signaling audio dropouts were happening): will fall back to safe Polling method automatically.
- 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.
