WMV阅读(IWMReaderCallbackAdvanced) [英] Wmv reading (IWMReaderCallbackAdvanced)

问题描述

我该怎么做才能在过滤器中创建IWMReaderCallbackAdvanced的IWMReader调用方法?

What should i do to make IWMReader call methods of IWMReaderCallbackAdvanced in my filter?

推荐答案

我尝试使用
中的程序 http://social.msdn.microsoft.com /Forums/zh-CN/windowsdirectshowdevelopment/thread/b20bcfec-2204-474c-bdb7-e2abf1498ce4/ [

I try to use program from
http://social.msdn.microsoft.com/Forums/en-US/windowsdirectshowdevelopment/thread/b20bcfec-2204-474c-bdb7-e2abf1498ce4/[^]

And for my file situation is like there has been described: GUID_NULL for first video pin, and does not draw data from last video pin.

Did somebody used this filter?
For first pin isaw, that not GUID_NULL was set. When getting back it is GUID_NULL.
Can you help me?

class LIST_DATA
{
public:
    WORD first;
    WMFOutputPinPtr second;
};

typedef list<LIST_DATA> PinMap;

;
        // create the pin with a unique name
        WORD wStrLen = 0;
        pStream->GetStreamName(NULL, &wStrLen);
        smart_array<WCHAR>awch = new WCHAR[wStrLen];
        pStream->GetStreamName(awch, &wStrLen);
        WMFOutputPin *pin = new WMFOutputPin(this, &m_csFilter, &hr, awch);
		LIST_DATA local_stream_data;
		local_stream_data.first = wStream;
		local_stream_data.second = pin;
        // insert in map, using wStream as index
        m_Outputs.push_back(local_stream_data);
        // get the compressed media type from the profile for this stream
        IWMMediaPropsPtr pProps = pStream;

;

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