static async public System.Threading.Tasks.Task <ICaptureProcessor> createCaptureProcessor(string a_URL)
{
string lPresentationDescriptor = "<?xml version='1.0' encoding='UTF-8'?>" +
"<PresentationDescriptor StreamCount='1'>" +
"<PresentationDescriptor.Attributes Title='Attributes of Presentation'>" +
"<Attribute Name='MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK' GUID='{58F0AAD8-22BF-4F8A-BB3D-D2C4978C6E2F}' Title='The symbolic link for a video capture driver.' Description='Contains the unique symbolic link for a video capture driver.'>" +
"<SingleValue Value='RTSPCaptureProcessor' />" +
"</Attribute>" +
"<Attribute Name='MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME' GUID='{60D0E559-52F8-4FA2-BBCE-ACDB34A8EC01}' Title='The display name for a device.' Description='The display name is a human-readable string, suitable for display in a user interface.'>" +
"<SingleValue Value='RTSP Capture Processor' />" +
"</Attribute>" +
"</PresentationDescriptor.Attributes>" +
"<StreamDescriptor Index='0' MajorType='MFMediaType_Video' MajorTypeGUID='{73646976-0000-0010-8000-00AA00389B71}'>" +
"<MediaTypes TypeCount='1'>" +
"<MediaType Index='0'>" +
"<MediaTypeItem Name='MF_MT_MAJOR_TYPE' GUID='{48EBA18E-F8C9-4687-BF11-0A74C9F96A8F}' Title='Major type GUID for a media type.' Description='The major type defines the overall category of the media data.'>" +
"<SingleValue Value='MFMediaType_Video' GUID='{73646976-0000-0010-8000-00AA00389B71}' />" +
"</MediaTypeItem>" +
"<MediaTypeItem Name='CM_DIRECT_CALL' GUID='{DD0570F7-0D02-4897-A55E-F65BFACA1955}' Title='Independent of samples.' Description='Specifies for a media type whether each sample is independent of the other samples in the stream.'>" +
"<SingleValue Value='True' />" +
"</MediaTypeItem>" +
"<MediaTypeItem Name='MF_MT_SUBTYPE' GUID='{F7E34C9A-42E8-4714-B74B-CB29D72C35E5}' Title='Subtype GUID for a media type.' Description='The subtype GUID defines a specific media format type within a major type.'>" +
"<SingleValue GUID='{Temp_SubTypeGUID}' />" +
"</MediaTypeItem>" +
"</MediaType>" +
"</MediaTypes>" +
"</StreamDescriptor>" +
"</PresentationDescriptor>";
RTSPCaptureProcessor lICaptureProcessor = new RTSPCaptureProcessor();
lICaptureProcessor.mURL = a_URL;
// The SPS/PPS comes from the SDP data
// or it is the first SPS/PPS from the H264 video stream
lICaptureProcessor.m_client.Received_SPS_PPS += (byte[] sps, byte[] pps) =>
{
if (lICaptureProcessor.mISourceRequestResult != null)
{
lICaptureProcessor.m_proxyMemory.Position = 0;
lICaptureProcessor.m_proxyMemory.Write(new byte[] { 0x00, 0x00, 0x00, 0x01 }, 0, 4); // Write Start Code
lICaptureProcessor.m_proxyMemory.Write(sps, 0, sps.Length);
lICaptureProcessor.m_proxyMemory.Write(new byte[] { 0x00, 0x00, 0x00, 0x01 }, 0, 4); // Write Start Code
lICaptureProcessor.m_proxyMemory.Write(pps, 0, pps.Length);
var ldata = lICaptureProcessor.m_proxyMemory.ToArray();
IntPtr lptrData = Marshal.AllocHGlobal(ldata.Length);
Marshal.Copy(ldata, 0, lptrData, ldata.Length);
lICaptureProcessor.mISourceRequestResult.setData(lptrData, (uint)ldata.Length, 1);
Marshal.FreeHGlobal(lptrData);
}
Thread.Sleep(500);
};
// Video NALs. May also include the SPS and PPS in-band for H264
lICaptureProcessor.m_client.Received_NALs += (List <byte[]> nal_units) =>
{
foreach (byte[] nal_unit in nal_units)
{
lICaptureProcessor.write(nal_unit);
lICaptureProcessor.mLockWrite.WaitOne();
lICaptureProcessor.mLockWrite.Reset();
if (lICaptureProcessor.mISourceRequestResult == null)
{
break;
}
}
};
lPresentationDescriptor = lPresentationDescriptor.Replace("Temp_SubTypeGUID", MFVideoFormat_H264.ToString());
lICaptureProcessor.mPresentationDescriptor = lPresentationDescriptor;
return(lICaptureProcessor);
}
