Windows-classic-samples/Samples/Win7Samples/multimedia/mediafoundation/asfparser/ASFManager.h

//////////////////////////////////////////////////////////////////////////
//
// ASFManager.h : CASFManager class declaration.
// 
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//////////////////////////////////////////////////////////////////////////

#pragma once

#include "MF_ASFParser.h"
#include "Decoder.h"

class CASFManager : public IUnknown
{

public:

    static HRESULT CASFManager::CreateInstance(CASFManager **ppASFManager);

    CASFManager(HRESULT* hr);


    ~CASFManager();

    HRESULT OpenASFFile(const WCHAR *sFileName);
    
    HRESULT EnumerateStreams (
        WORD** ppwStreamNumbers, 
        GUID** ppguidMajorType, 
        DWORD* cbTotalStreams);

    HRESULT SelectStream(WORD wStreamNumber, GUID* pguidCurrentMediaType);

    HRESULT GetSeekPosition(
        MFTIME* seektime, 
        QWORD *cbDataOffset, 
        MFTIME* hnsApproxSeekTime
        );

    HRESULT SetFilePropertiesObject(FILE_PROPERTIES_OBJECT* fileinfo);

    HRESULT GenerateSamples(
        MFTIME hnsSeekTime, 
        DWORD dwFlags,
        SAMPLE_INFO *pSampleInfo,
        void (*FuncPtrToDisplaySampleInfo)(SAMPLE_INFO*)
        );

    // IUnknown methods
    STDMETHODIMP QueryInterface(REFIID iid, void** ppv)
    {
        if (!ppv)
        {
            return E_POINTER;
        }
        if (iid == IID_IUnknown)
        {
            *ppv = static_cast<IUnknown*>(this);
        }
        else
        {
            *ppv = NULL;
            return E_NOINTERFACE;
        }
        AddRef();
        return S_OK;
    }   

    STDMETHODIMP_(ULONG) AddRef()
    {
        return InterlockedIncrement(&m_nRefCount);
    }
        
    STDMETHODIMP_(ULONG) Release()
    {
        ULONG uCount = InterlockedDecrement(&m_nRefCount);
        if (uCount == 0)
        {
            delete this;
        }
        // For thread safety, return a temporary variable.
        return uCount;
    }

    HRESULT GetMediaController (CMediaController** pMediaController)
    {
        if (!m_pDecoder)
        {
            return MF_E_NOT_INITIALIZED;
        }

        return m_pDecoder->GetMediaController(pMediaController);
    }

protected:

    HRESULT CreateASFContentInfo(IMFByteStream *pContentByteStream, IMFASFContentInfo **ppContentInfo);

    HRESULT CreateASFSplitter(IMFByteStream *pContentByteStream, IMFASFSplitter **ppSplitter);

    HRESULT CreateASFIndexer(IMFByteStream *pContentByteStream, IMFASFIndexer **ppIndexer);

    HRESULT ReadDataIntoBuffer(
        IMFByteStream *pStream,     
        DWORD cbOffset,             
        DWORD cbToRead,             
        IMFMediaBuffer **ppBuffer
        );

    HRESULT SetupStreamDecoder(WORD wStreamNumber, GUID* pguidCurrentMediaType);

    HRESULT GetSeekPositionManually(MFTIME hnsSeekTime, QWORD *cbDataOffset); 

    HRESULT GetSeekPositionWithIndexer( 
        MFTIME hnsSeekTime, 
        QWORD *cbDataOffset, 
        MFTIME* hnsApproxSeekTime
        );

    void GetTestDuration(
        const MFTIME& hnsSeekTime, 
        BOOL bReverse, 
        MFTIME* phnsTestDuration
        );

    HRESULT SendAudioSampleToDecoder (
        IMFSample* pSample,
        const MFTIME& hnsTestSampleEndTime,
        BOOL bReverse,
        BOOL *pbComplete,
        SAMPLE_INFO* pSampleInfo,
        void (*FuncPtrToDisplaySampleInfo)(SAMPLE_INFO*));

    HRESULT SendKeyFrameToDecoder (
        IMFSample* pSample,
        const MFTIME& hnsSeekTime,
        BOOL bReverse,
        BOOL* fDecodedKeyFrame,
        SAMPLE_INFO* pSampleInfo,
        void (*FuncPtrToDisplaySampleInfo)(SAMPLE_INFO*));

    HRESULT GetSampleInfo(IMFSample *pSample, SAMPLE_INFO *pSampleInfo);
    
    void Reset();

    HRESULT GenerateSamplesLoop(
        const MFTIME& hnsSeekTime, 
        const MFTIME& hnsTestSampleDuration,
        BOOL  bReverse,
        DWORD cbDataOffset, 
        DWORD cbDataLen, 
        SAMPLE_INFO* pSampleInfo,
        void (*FuncPtrToDisplaySampleInfo)(SAMPLE_INFO*)
        );

protected:
    long    m_nRefCount;    // Reference count

    //currently selected stream information
    WORD        m_CurrentStreamID;
    GUID        m_guidCurrentMediaType;

    CDecoder* m_pDecoder;

    //File info
    FILE_PROPERTIES_OBJECT* m_fileinfo;

    //Media Foundation ASF components
    IMFASFContentInfo*  m_pContentInfo;
    IMFASFSplitter*     m_pSplitter;
    IMFASFIndexer*      m_pIndexer;
    IMFMediaBuffer*     m_pDataBuffer;


    // TEST!
    IMFByteStream*      m_pByteStream;
    UINT64              m_cbDataOffset;
    UINT64              m_cbDataLength;

};