GetSoundDeviceCapabilities

MMRESULT GetSoundDeviceCapabilities ( IN PSOUND_DEVICE  SoundDevice, IN DWORD  DeviceId, OUT PVOID  Capabilities, IN DWORD  CapabilitiesSize  ) Definition at line 24 of file capabilities.c. Referenced by MmeGetSoundDeviceCapabilities(). { MMDEVICE_TYPE DeviceType; PMMFUNCTION_TABLE FunctionTable; BOOLEAN GoodSize = FALSE; MMRESULT Result; VALIDATE_MMSYS_PARAMETER( IsValidSoundDevice(SoundDevice) ); VALIDATE_MMSYS_PARAMETER( Capabilities ); VALIDATE_MMSYS_PARAMETER( CapabilitiesSize > 0 ); /* Obtain the device type */ Result = GetSoundDeviceType(SoundDevice, &DeviceType); SND_ASSERT( Result == MMSYSERR_NOERROR ); if ( ! MMSUCCESS(Result) ) return TranslateInternalMmResult(Result); /* Obtain the function table */ Result = GetSoundDeviceFunctionTable(SoundDevice, &FunctionTable); SND_ASSERT( Result == MMSYSERR_NOERROR ); if ( ! MMSUCCESS(Result) ) return TranslateInternalMmResult(Result); SND_ASSERT( IS_VALID_SOUND_DEVICE_TYPE(DeviceType) ); /* Check that the capabilities structure is of a valid size */ switch ( DeviceType ) { case WAVE_OUT_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(WAVEOUTCAPSW); break; } case WAVE_IN_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(WAVEINCAPSW); break; } case MIDI_OUT_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(MIDIOUTCAPSW); break; } case MIDI_IN_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(MIDIINCAPSW); break; } case AUX_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(AUXCAPSW); break; } case MIXER_DEVICE_TYPE : { GoodSize = CapabilitiesSize >= sizeof(MIXERCAPSW); break; } }; if ( ! GoodSize ) { SND_ERR(L"Device capabilities structure too small\n"); return MMSYSERR_INVALPARAM; } /* Call the "get capabilities" function within the function table */ SND_ASSERT( FunctionTable->GetCapabilities ); if ( ! FunctionTable->GetCapabilities ) return MMSYSERR_NOTSUPPORTED; return FunctionTable->GetCapabilities(SoundDevice, DeviceId, Capabilities, CapabilitiesSize); }