Vitec Multimedia HDM850+ Instrukcja Użytkownika Pobierz pdf (Strona 47)

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VMC-7440_v8_0_6_Quick Start_V1_0_0.doc

Date: 3/18/2013

page 47 / 51

HRESULT get_ComponentParameterText([in] BSTR

bstrComponentName, [in] BSTR

bstrParameterName, [out, retval] BSTR* pbstrVal);

HRESULT put_ComponentParameterText([in] BSTR

bstrComponentName, [in] BSTR

bstrParameterName, [in] BSTR bstrVal);

7.8.28. How can I monitor encoded duration or number of encoded frames

with VMC-7440?

SDK from version 8.0.5 implements IAuxTime interface that returns the encoding

duration in ms or number of frames through 2 methods:

• get_FrameNumber($llValueFrame).

• get_Milliseconds($llValueMs).

IAuxTime interface can be used on “AVC HW Encoder A” for the first video channel and

on “AVC HW Encoder B” for the second video channel.

We delivered in version 8.0.6 a specific version of livewire sample application that calls

these 2 methods to "AVC HW Encoder A" component instead of “Video Encoder”

component in the Notify function.

(see line 1733 of livewire test applicationdlg.cpp).

if (m_pAssemblyContainer) {

IComponentContainerV4* pComponentContainer = NULL;

HRESULT hr = m_pAssemblyContainer-

>QueryInterface(IID_IComponentContainerV4, (void**)&pComponentContainer);

if (SUCCEEDED(hr)) {

IAuxTime* piAT = NULL;

if (SUCCEEDED(hr = pComponentContainer-

>QueryComponentInterfaceByName(L"AVC HW Encoder A", IID_IAuxTime,

(IUnknown**)&piAT))) {

LONGLONG llValueFrame = 0;

LONGLONG llValueMs = 0;

LONGLONG llValueTc = 0;

piAT->get_FrameNumber(&llValueFrame);

piAT->get_Milliseconds(&llValueMs);

piAT->get_TimeCode(&llValueTc);

piAT->Release();

TCHAR str[256];

wsprintf(str, "Segment length = %d frames, %d ms, %08X\n",

(LONG)llValueFrame, (LONG)llValueMs, (LONG)llValueTc);

OutputDebugString(str);

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Vitec Multimedia HDM850+ Instrukcja Użytkownika Strona 47