AudioCapture

Supported Hardware Devices: Pro Capture cards

Contents Demonstrated in the Sample:

1. Capturing audio data from input signals
2. Saving LPCM format audio signals as WAV files
3. Channel selection via command parameters when multiple devices are available

Call Logic:

1. Obtain version information, initialize, and enumerate devices: MWGetVersion, MWCaptureInitInstance, MWRefreshDevice, MWGetChannelCount
2. Filter supported devices based on device information: MWGetChannelInfoByIndex
3. Open the device:
   1. Open the device specified by command parameters: MWOpenChannel
   2. When no device is specified in command parameters, open the first available channel by default: MWGetDevicePath, MWOpenChannelByPath
4. Retrieve audio source count and status: MWGetAudioInputSourceArray, MWGetAudioSignalStatus
5. Start audio capture: MWStartAudioCapture
6. Create event: MWCreateEvent
7. Register for message notifications: MWRegisterNotify
8. Wait for event: MWTryWaitEvent, MWWaitEvent
9. Capture one frame of audio data: MWCaptureAudioFrame
10. Write audio data to WAV file
11. Repeat steps 8, 9, and 10 until capture is stopped
12. Stop audio capture and release resources: MWUnregisterNotify, MWCloseEvent, MWCloseChannel, MWCaptureExitInstance

Result:

Flowchart: