FLICSource.h

/* 
 *      Copyright (C) 2003-2005 Gabest
 *      http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

#pragma once

#include <atlbase.h>
#include <afxtempl.h>

#pragma pack(push, 1)
enum
{
        FLIC_256_COLOR = 4,
        FLIC_DELTA = 7,
        FLIC_64_COLOR = 11,
        FLIC_LC = 12,
        FLIC_BLACK = 13,
        FLIC_BRUN = 15,
        FLIC_COPY = 16,
        FLIC_MINI = 18
};
        
struct FLIC
{
        DWORD size;
        WORD id; // 0xaf11 or 0xaf12
        WORD frames, x, y, bpp;
        WORD flags, ticks;
        DWORD next, frit;
        BYTE reserved[102];
};

struct FLIC_PREFIX
{
        DWORD size;
        WORD id; // 0xf100
        WORD chunks;
        BYTE reserved[8];
};

struct FLIC_FRAME
{
        DWORD size;
        WORD id; // 0xf1fa
        WORD chunks;
        BYTE reserved[8];
};

struct FLIC_CHUNK
{
        DWORD size;
        WORD type;
};
#pragma pack(pop)

struct FLIC_FRAME_ENTRY
{
        __int64 pos;
        bool fKeyframe;
        FLIC_FRAME hdr;
};

[uuid("17DB5CF6-39BB-4d5b-B0AA-BEBA44673AD4")]
class CFLICSource
        : public CSource
        , public IFileSourceFilter
        , public IAMFilterMiscFlags
{
        CStringW m_fn;

public:
        CFLICSource(LPUNKNOWN lpunk, HRESULT* phr);
        virtual ~CFLICSource();

        DECLARE_IUNKNOWN;
    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);

        // IFileSourceFilter
        STDMETHODIMP Load(LPCOLESTR pszFileName, const AM_MEDIA_TYPE* pmt);
        STDMETHODIMP GetCurFile(LPOLESTR* ppszFileName, AM_MEDIA_TYPE* pmt);

        // IAMFilterMiscFlags
        STDMETHODIMP_(ULONG) GetMiscFlags();
};

class CFLICStream 
        : public CSourceStream
        , public CSourceSeeking
{
        CFile m_flic;
        FLIC m_hdr;
        CArray<FLIC_FRAME_ENTRY> m_frames;

        CCritSec m_cSharedState;

        REFERENCE_TIME m_AvgTimePerFrame;
        REFERENCE_TIME m_rtSampleTime, m_rtPosition;

        BOOL m_bDiscontinuity, m_bFlushing;

        HRESULT OnThreadStartPlay();
        HRESULT OnThreadCreate();

        void UpdateFromSeek();
        STDMETHODIMP SetRate(double dRate);

        HRESULT ChangeStart();
    HRESULT ChangeStop();
    HRESULT ChangeRate() {return S_OK;}

private:
        int m_nLastFrameNum;
        DWORD m_pPalette[256];
        CAutoVectorPtr<BYTE> m_pFrameBuffer;

        void SeekToNearestKeyFrame(int nFrame);
        void ExtractFrame(int nFrame);
        void _blackchunk();
        void _copychunk();
        bool _colorchunk(bool f64);
        void _brunchunk();
        void _lcchunk();
        void _deltachunk();

public:
    CFLICStream(const WCHAR* wfn, CFLICSource* pParent, HRESULT* phr);
        virtual ~CFLICStream();

    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);

    HRESULT DecideBufferSize(IMemAllocator* pIMemAlloc, ALLOCATOR_PROPERTIES* pProperties);
    HRESULT FillBuffer(IMediaSample* pSample);
        HRESULT CheckConnect(IPin* pPin);
    HRESULT CheckMediaType(const CMediaType* pMediaType);
    HRESULT GetMediaType(int iPosition, CMediaType* pmt);
        
        STDMETHODIMP Notify(IBaseFilter* pSender, Quality q);
};

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