IOCTL_KS_PROPERTY wait never satisfied when reading microphone stream

NTDEV
1

I'm trying to read raw PCM data from a microphone stream. To do this, I'm using KsCreatePin to create a connection to a microphone pin and start reading from it. Before reading, I'm setting the pin state to KSSTATE_RUN using IOCTL_KS_PROPERTY.

Reading data in the loop works for a few seconds (I can read a few KB) but then suddenly, ZwWaitForSingleObject never returns after the IOCTL_KS_READ_STREAM call. I'm not sure what I'm doing wrong to trigger this behavior. The current test code looks as follows:

  // Start the reading loop
    while (Stream != NULL)
    {
        // Clear wait event
        ZwClearEvent(Event);

        // Zero the stream header
        memset(&StreamHdr, 0, sizeof(KSSTREAM_HEADER));

        // Initialize the stream header
        StreamHdr.Size                          = sizeof(KSSTREAM_HEADER);
        StreamHdr.Data                          = MediaBuffer;
        StreamHdr.FrameExtent                   = MediaBufferSize;
        StreamHdr.DataUsed                      = 0;
        StreamHdr.OptionsFlags                  = 0 /* KSSTREAM_HEADER_OPTIONSF_TIMEVALID | KSSTREAM_HEADER_OPTIONSF_DURATIONVALID */;

        // Initialize time and duration
        StreamHdr.PresentationTime.Numerator    = 8 * 10000000; // Bits per byte * nanoseconds
        StreamHdr.PresentationTime.Denominator  = BitsPerSample * NoChannels * SampleFreq;
        StreamHdr.PresentationTime.Time         = ByteOffset;
        StreamHdr.Duration                      = MediaBufferSize;

        // Request new block of media data
        Status = NtDeviceIoControlFile(
            PinHandle,
            Event,
            NULL,
            NULL,
            &IoStatus,
            IOCTL_KS_READ_STREAM,
            &StreamHdr,
            sizeof(KSSTREAM_HEADER),
            &StreamHdr,
            sizeof(KSSTREAM_HEADER)
        );

        // Check and wait if pending
        if (Status == STATUS_PENDING)
        {
            Status = ZwWaitForSingleObject(Event, FALSE, NULL); // Stalls here
            Status = IoStatus.Status;
        }

        // Check success
        if (!NT_SUCCESS(Status))
            break;

        DbgPrintEx(0, 0, "Received data: %d\n", StreamHdr.DataUsed); // Works for a few KB
    }

Note: I've tried setting KSSTREAM_HEADER_OPTIONSF_TIMEVALID | KSSTREAM_HEADER_OPTIONSF_DURATIONVALID as OptionsFlags in the stream header as well, as described by the docs, but this results in NtDeviceIoControlFile instantly returning with 0 bytes read.

I appricate any attempts to explain this behavior!