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PCM 流数据范围

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此示例使用 KSDATARANGE_AUDIO 结构来描述 PCM 流的数据范围。

  DataRange.FormatSize  = sizeof(KSDATARANGE_AUDIO);
  DataRange.Flags       = 0;
  DataRange.SampleSize  = 0;
  DataRange.Reserved    = 0;
  DataRange.MajorFormat = STATICGUIDOF(KSDATAFORMAT_TYPE_AUDIO);
  DataRange.SubFormat   = STATICGUIDOF(KSDATAFORMAT_SUBTYPE_PCM);
  DataRange.Specifier   = STATICGUIDOF(KSDATAFORMAT_SPECIFIER_WAVEFORMATEX);
  MaximumChannels        = 2;
  MinimumBitsPerSample   = 2;
  MaximumBitsPerSample   = 16;
  MinimumSampleFrequency = 5000;
  MaximumSampleFrequency = 48000;