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		{"id":"d6c4368826cc2627","x":-317,"y":0,"width":577,"height":200,"type":"text","text":"`IMFAttributes`\n\n```cpp\npDeviceAttributes->SetGUID(\n    MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,\n    MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_AUDCAP_GUID)\npDeviceAttributes->SetString(\n    MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_AUDCAP_ENDPOINT_ID,\n    deviceSymbolic.c_str())\n```\n"},
		{"id":"3df0dd59ad66c803","x":-278,"y":-260,"width":500,"height":140,"type":"text","text":"`IMFActivate(pDevice)`\n\n它就是你需要的裝置\n\n```cpp\nMFCreateDeviceSourceActivate(pDeviceAttributes, &pDevice)\n```\n"},
		{"id":"5ab8d6f75e911379","x":-294,"y":-620,"width":531,"height":264,"type":"text","text":"`IMFMediaSource`\n\n> 媒體來源是一種產生媒體資料的物件。 例如，資料可能來自視訊檔案、網路串流或硬體裝置，例如相機。 每個媒體來源都包含一或多個資料流程，而每個資料流程都會提供一種類型的資料，例如音訊或視訊。\n\n```cpp\nIMFMediaSource* pMediaSource = NULL;\npDevice->ActivateObject(IID_PPV_ARGS(&pMediaSource)\n```"}
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