webmmux/webmmuxfilter.h

// Copyright (c) 2010 The WebM project authors. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS.  All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.

#pragma once
#include <strmif.h>
#include <string>
#include "webmmuxinpinvideo.h"
#include "webmmuxinpinaudio.h"
#include "webmmuxoutpin.h"
#include "webmmuxcontext.h"
#include "clockable.h"
#include "webmmuxidl.h"

namespace WebmMuxLib
{

class Filter : public IBaseFilter,
               public IMediaSeeking,
               public IAMFilterMiscFlags,
               public IWebmMux,
               public CLockable
{
    friend HRESULT CreateInstance(
            IClassFactory*,
            IUnknown*,
            const IID&,
            void**);

    Filter(IClassFactory*, IUnknown*);
    virtual ~Filter();

    Filter(const Filter&);
    Filter& operator=(const Filter&);

public:

    //IUnknown

    HRESULT STDMETHODCALLTYPE QueryInterface(const IID&, void**);
    ULONG STDMETHODCALLTYPE AddRef();
    ULONG STDMETHODCALLTYPE Release();

    //IBaseFilter

    HRESULT STDMETHODCALLTYPE GetClassID(CLSID*);
    HRESULT STDMETHODCALLTYPE Stop();
    HRESULT STDMETHODCALLTYPE Pause();
    HRESULT STDMETHODCALLTYPE Run(REFERENCE_TIME);
    HRESULT STDMETHODCALLTYPE GetState(DWORD, FILTER_STATE*);
    HRESULT STDMETHODCALLTYPE SetSyncSource(IReferenceClock*);
    HRESULT STDMETHODCALLTYPE GetSyncSource(IReferenceClock**);
    HRESULT STDMETHODCALLTYPE EnumPins(IEnumPins**);
    HRESULT STDMETHODCALLTYPE FindPin(LPCWSTR, IPin**);
    HRESULT STDMETHODCALLTYPE QueryFilterInfo(FILTER_INFO*);
    HRESULT STDMETHODCALLTYPE JoinFilterGraph(IFilterGraph*, LPCWSTR);
    HRESULT STDMETHODCALLTYPE QueryVendorInfo(LPWSTR*);

    //IMediaSeeking interface:

    HRESULT STDMETHODCALLTYPE GetCapabilities(DWORD*);
    HRESULT STDMETHODCALLTYPE CheckCapabilities(DWORD*);
    HRESULT STDMETHODCALLTYPE IsFormatSupported(const GUID*);
    HRESULT STDMETHODCALLTYPE QueryPreferredFormat(GUID*);
    HRESULT STDMETHODCALLTYPE GetTimeFormat(GUID*);
    HRESULT STDMETHODCALLTYPE IsUsingTimeFormat(const GUID*);
    HRESULT STDMETHODCALLTYPE SetTimeFormat(const GUID*);
    HRESULT STDMETHODCALLTYPE GetDuration(LONGLONG*);
    HRESULT STDMETHODCALLTYPE GetStopPosition(LONGLONG*);
    HRESULT STDMETHODCALLTYPE GetCurrentPosition(LONGLONG*);

    HRESULT STDMETHODCALLTYPE ConvertTimeFormat(
        LONGLONG*,
        const GUID*,
        LONGLONG,
        const GUID*);

    HRESULT STDMETHODCALLTYPE SetPositions(
        LONGLONG*,
        DWORD,
        LONGLONG*,
        DWORD);

    HRESULT STDMETHODCALLTYPE GetPositions(
        LONGLONG*,
        LONGLONG*);

    HRESULT STDMETHODCALLTYPE GetAvailable(
        LONGLONG*,
        LONGLONG*);

    HRESULT STDMETHODCALLTYPE SetRate(double);
    HRESULT STDMETHODCALLTYPE GetRate(double*);
    HRESULT STDMETHODCALLTYPE GetPreroll(LONGLONG*);

    ULONG STDMETHODCALLTYPE GetMiscFlags();

    //IWebmMux

    HRESULT STDMETHODCALLTYPE SetWritingApp(const wchar_t*);
    HRESULT STDMETHODCALLTYPE GetWritingApp(wchar_t**);

    HRESULT STDMETHODCALLTYPE SetMuxMode(WebmMuxMode);
    HRESULT STDMETHODCALLTYPE GetMuxMode(WebmMuxMode*);

private:

    class nondelegating_t : public IUnknown
    {
    public:

        Filter* const m_pFilter;
        LONG m_cRef;

        nondelegating_t(Filter*);
        virtual ~nondelegating_t();

        HRESULT STDMETHODCALLTYPE QueryInterface(const IID&, void**);
        ULONG STDMETHODCALLTYPE AddRef();
        ULONG STDMETHODCALLTYPE Release();

    private:

        nondelegating_t(const nondelegating_t&);
        nondelegating_t& operator=(const nondelegating_t&);

    };

    IClassFactory* const m_pClassFactory;
    nondelegating_t m_nondelegating;
    IUnknown* const m_pOuter;  //decl must follow m_nondelegating
    REFERENCE_TIME m_start;
    IReferenceClock* m_clock;
    FILTER_INFO m_info;

public:

    FILTER_STATE m_state;
    InpinVideo m_inpin_video;
    InpinAudio m_inpin_audio;
    Outpin m_outpin;
    Context m_ctx;

    HRESULT OnEndOfStream();

};

}  //end WebmMux