Here are the data structures with brief descriptions:

BiQuad
OceanWave
PaAlsaStreamInfo
PaAsioStreamInfo
PaDeviceInfo
PaHostApiInfo
PaHostErrorInfo
PaMacCoreStreamInfo
PaStreamCallbackTimeInfo
PaStreamInfo
PaStreamParameters
paTestData
PaVersionInfo
PaWasapiJackDescription
PaWasapiStreamInfo
PaWasapiStreamPassthrough
PaWDMKSDirectionSpecificStreamInfo
PaWDMKSSpecificStreamInfo
PaWinDirectSoundStreamInfo
PaWinMmeDeviceAndChannelCount
PaWinMmeStreamInfo
PaWinWaveFormat
PaWinWDMKSDeviceInfo
PaWinWDMKSInfo
PinkNoise
ScopedPaHandler
Sine