VorbisDecodeInputPin.h

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//===========================================================================
//Copyright (C) 2003, 2004 Zentaro Kavanagh
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
//- Redistributions of source code must retain the above copyright
//  notice, this list of conditions and the following disclaimer.
//
//- Redistributions in binary form must reproduce the above copyright
//  notice, this list of conditions and the following disclaimer in the
//  documentation and/or other materials provided with the distribution.
//
//- Neither the name of Zentaro Kavanagh nor the names of contributors 
//  may be used to endorse or promote products derived from this software 
//  without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
//PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
//CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
//EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
//LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//===========================================================================

#pragma once
#include <vector>
#include <fstream>
using namespace std;
#include "vorbisdecoderdllstuff.h"



#include "IOggDecoder.h"
#include "IOggOutputPin.h"
#include "AbstractTransformInputPin.h"
#include "VorbisDecodeInputPin.h"

#include "VorbisDecodeFilter.h"

extern "C" {
//#include <fishsound/fishsound.h>
#include "fish_cdecl.h"
}

class VorbisDecodeOutputPin;

class VorbisDecodeInputPin 
        :       public AbstractTransformInputPin
        ,       public IOggDecoder
{
public:

        DECLARE_IUNKNOWN
        STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void **ppv);
        VorbisDecodeInputPin(AbstractTransformFilter* inFilter, CCritSec* inFilterLock, AbstractTransformOutputPin* inOutputPin, vector<CMediaType*> inAcceptableMediaTypes);
        virtual ~VorbisDecodeInputPin(void);
        static int __cdecl VorbisDecoded (FishSound* inFishSound, float** inPCM, long inFrames, void* inThisPointer);

        virtual HRESULT SetMediaType(const CMediaType* inMediaType);
        virtual HRESULT CheckMediaType(const CMediaType *inMediaType);
        virtual STDMETHODIMP NewSegment(REFERENCE_TIME inStartTime, REFERENCE_TIME inStopTime, double inRate);
        virtual STDMETHODIMP EndFlush();

        virtual STDMETHODIMP GetAllocatorRequirements(ALLOCATOR_PROPERTIES *outRequestedProps);
        virtual HRESULT CompleteConnect(IPin *inReceivePin);

        //Overriden from AbstractTransform input pin
        virtual STDMETHODIMP Receive(IMediaSample* inSample);

        //IOggDecoder Interface
        virtual LOOG_INT64 convertGranuleToTime(LOOG_INT64 inGranule);
        virtual LOOG_INT64 mustSeekBefore(LOOG_INT64 inGranule);
        virtual IOggDecoder::eAcceptHeaderResult showHeaderPacket(OggPacket* inCodecHeaderPacket);
        virtual string getCodecShortName();
        virtual string getCodecIdentString();



protected:
        //fstream debugLog;

        static const unsigned long DECODED_BUFFER_SIZE = 1<<20;         //1 Meg buffer

        enum eVorbisSetupState {
                VSS_SEEN_NOTHING,
                VSS_SEEN_BOS,
                VSS_SEEN_COMMENT,
                VSS_ALL_HEADERS_SEEN,
                VSS_ERROR
        };

        eVorbisSetupState mSetupState;

        static const unsigned long VORBIS_IDENT_HEADER_SIZE = 30;
        static const unsigned long VORBIS_NUM_BUFFERS = 75;
        static const unsigned long VORBIS_BUFFER_SIZE = 65536;

        //Implementation of virtuals from AbstractTransform Filter
        virtual bool ConstructCodec();
        virtual void DestroyCodec();
        virtual HRESULT TransformData(unsigned char* inBuf, long inNumBytes);

        HRESULT mHR;
        bool mBegun;

        FishSound* mFishSound;
        FishSoundInfo mFishInfo; 

        int mNumChannels;
        int mFrameSize;
        int mSampleRate;
        unsigned int mUptoFrame;

        unsigned char* mDecodedBuffer;
        unsigned long mDecodedByteCount;

        __int64 mRateNumerator;
        static const __int64 RATE_DENOMINATOR = 65536;

        IOggOutputPin* mOggOutputPinInterface;
        bool mSentStreamOffset;

};

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