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152 lines
3.1 KiB
152 lines
3.1 KiB
/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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Confvid.h
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Abstract:
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Definitions for video streams
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Author:
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Mu Han (muhan) 15-September-1998
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--*/
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#ifndef __CONFVID_H_
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#define __CONFVID_H_
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const DWORD g_dwVideoThreadPriority = THREAD_PRIORITY_NORMAL;
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const DWORD g_dwVideoChannels = 1;
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const DWORD g_dwVideoSampleRateHigh = 8;
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const DWORD g_dwVideoSampleRateLow = 5;
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const int CIFWIDTH = 0x160;
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const int CIFHEIGHT = 0x120;
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const int QCIFWIDTH = 0xb0;
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const int QCIFHEIGHT = 0x90;
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// This is the lowest bitrate we will use.
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const int BITRATELOWERLIMIT = 4000;
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// This is the threshold for sending a flow control command.
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const int BITRATEDELTA = 2000;
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// This is increment we use for adjust back to normal.
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const int BITRATEINC = 1000;
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const DWORD VIDEO_INITIAL_ADJUSTMENT_THRESHOLD = 12000;
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const float VIDEO_INITIAL_ADJUSTMENT = 0.8f;
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const int IFRAMEINTERVAL = 15000; // in miliseconds.
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typedef enum _ENCODERCOMMAND
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{
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EC_BITRATE,
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EC_IFRAME
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} ENCODERCOMMAND, *PENCODERCOMMAND;
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class CStreamVideoRecv : public CH323MSPStream
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{
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public:
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CStreamVideoRecv();
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HRESULT Configure(
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IN HANDLE htChannel,
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IN STREAMSETTINGS &StreamSettings
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);
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protected:
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HRESULT SetUpFilters();
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HRESULT SetUpInternalFilters();
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HRESULT ConnectTerminal(
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IN ITTerminal * pITTerminal
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);
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HRESULT ConfigureRTPFilter(
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IN IBaseFilter * pIBaseFilter
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);
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HRESULT HandlePacketReceiveLoss(
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IN DWORD dwLossRate
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);
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protected:
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DWORD m_dwCurrentBitRate;
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DWORD m_dwProposedBitRate;
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DWORD m_dwLastIFrameRequestedTime;
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DWORD m_dwIFramePending;
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};
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class CStreamVideoSend : public CH323MSPStream
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{
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public:
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CStreamVideoSend();
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HRESULT Configure(
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IN HANDLE htChannel,
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IN STREAMSETTINGS &StreamSettings
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);
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HRESULT ShutDown ();
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HRESULT SendIFrame();
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HRESULT ChangeMaxBitRate(
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IN DWORD dwMaxBitRate
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);
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protected:
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HRESULT CheckTerminalTypeAndDirection(
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IN ITTerminal * pTerminal
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);
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HRESULT SetUpFilters();
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HRESULT ConnectTerminal(
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IN ITTerminal * pITTerminal
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);
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HRESULT CStreamVideoSend::CreateSendFilters(
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IN IPin *pCapturePin
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);
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HRESULT CStreamVideoSend::ConnectPreview(
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IN IPin *pPreviewInputPin
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);
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HRESULT ConfigureVideoCaptureTerminal(
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IN ITTerminalControl* pTerminal,
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OUT IPin ** ppIPin
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);
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HRESULT FindPreviewInputPin(
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IN ITTerminalControl* pTerminal,
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OUT IPin ** ppIpin
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);
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HRESULT ConfigureRTPFilter(
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IN IBaseFilter * pIBaseFilter
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);
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HRESULT HandlePacketTransmitLoss(
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IN DWORD dwLossRate
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);
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protected:
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IBaseFilter * m_pIEncoderFilter;
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DWORD m_dwCurrentBitRate;
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DWORD m_dwProposedBitRate;
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DWORD m_dwLastIFrameSentTime;
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DWORD m_dwIFramePending;
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};
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#endif
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