umc_mpeg2ps_spl.h

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/*//////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2003-2005 Intel Corporation. All Rights Reserved.
//
*/

#ifndef __UMC_MPEG2PS_SPL_H__
#define __UMC_MPEG2PS_SPL_H__

#include "umc_mpeg2pes_spl.h"

//MPEG2 Program stream splitter
//"BA..PES..video data..""BA..PES..audio data.."

namespace UMC
{

    class MPEG2PSSplitter : public MPEG2PESSplitter
    {
    public:
        MPEG2PSSplitter():MPEG2PESSplitter()
        {
            m_bFistAudioFrame[0] = true;
            m_bFistAudioFrame[1] = true;
            m_bSequenceFound  = false;

        }
        ~MPEG2PSSplitter()
        {
        }

    protected:

        Status virtual GetPrevGop          (unsigned int pid,
                                            vm_sizet p_start,
                                            vm_sizet &posIFrame,
                                            vm_sizet &posPackege);


        Status virtual ProcessPackets_back (unsigned int pid,
                                            vm_sizet p_packege_start,
                                            vm_sizet p_start,
                                            vm_sizet p_end);


        //here must be implemented real packet processing,
        //it is specific for each format

        //this function witll return control if reading error
        //or end of stream happen
        Status virtual  ProcessPackets(int count = -1);
        //read one packet (or size bytes of pure stream) and
        //return control, for PS, TS streams size parameter must be 0
        //returned UMC_OK means next frame was formed and ready
        //to output
        //UMC_NOT_ENOUGH_DATA means packed was processed but frame
        //is not ready
        //all other is errors
        Status virtual  ProcessOnePacket(int size = 0);

        //initialization of subprocessing, call before ProcessOnePacket
        Status virtual  InitProcessing();

        //de-initialization of subprocessing, call after ProcessOnePacket
        Status virtual  CloseProcessing();

        //here must be implemented pointer positioning to first
        //valid start code after repositioning
        Status virtual  MoveToNextSyncWord();
        //forward search for main header in reverse playback
        Status virtual  ForwardInit();

        //forward search for main header in reverse playback
        Status virtual  ForwardSearch();

        bool virtual    IsAcceptableVideoBuffer();

    private:

        Status MPEG2PSPackHeader();

    protected:


    };
} // namespace UMC

#endif /* __UMC_MPEG2PS_SPL_H__ */