McDewey

pmmt Address of the MMTIME structure. cbmmt Size, in bytes, of the MMTIME structure. waveInOpen The waveInOpen function opens the given waveform-audio input device for recording. Function Details MMRESULT waveInOpen( LPHWAVEIN phwi, UINT uDeviceID, LPWAVEFORMATEX pwfx, DWORD dwCallback, DWORD dwCallbackInstance, DWORD fdwOpen ); Parameters phwi Address that is filled with a handle that identifies the open waveform-audio input device. Use this handle to identify the device when calling other waveform-audio input functions. This parameter can be NULL if WAVE_FORMAT_QUERY is specified for fdwOpen.HDR structure. uDeviceID Identifier of the waveform-audio input device to open. It can be either a device identifier or a handle of an open waveform-audio input device. You can use the following flag instead of a device identifier: WAVE_MAPPER -The function selects a waveform-audio input device that is capable of recording in the specified format. pwfx Address of a WAVEFORMATEX structure that identifies the desired format for recording waveform-audio data. You can free this structure immediately after waveInOpen returns. The formats that the TAPI Wave Driver supports include a 16-bit PCM at 8000 Hz, 8-bit mulaw at 8000 Hz, and 8-bit alaw at 8000 Hz. Note dwCallback Address of a fixed callback function, an event handle, a handle to a window, or the identifier of a thread to be called during waveform-audio recording to process messages that are related to the progress of recording. If no callback function is required, this value can specify zero. For more information on the callback function, see waveInProc in the TAPI API. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 308 Basic TAPI Implementation waveInOpen