umc_avi_splitter.cpp

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.
//
*/

#include "vm_debug.h"
#include "vm_time.h"
#include "umc_avi_spl_base.h"

#include "umc_avi_splitter.h"
#include "umc_h264_spl.h"
#include "umc_mpeg4_spl.h"

#include "umc_media_data.h"

UMC::AVISplitter::AVISplitter():
Splitter()
{
    m_pSpl = NULL;
}

UMC::AVISplitter::~AVISplitter()
{
    if (m_pSpl)
        m_pSpl->Close();
    delete m_pSpl;
    m_pSpl = NULL;
}

UMC::Status UMC::AVISplitter::Init(SplitterParams& init)
{
    UMC::Status            res;
    UMC::BaseAVISplitter*  p_spl1 = NULL;
    UMC::SplitterInfo      splInfo;

    m_pDataReader = init.m_pDataReader;
    if(!m_pDataReader)
    {
        //only external data reader supported
        return UMC_NULL_PTR;
    }

    //choose a splitter
    UMC::BaseAVISplitter::GetStreamsInfo(m_pDataReader, splInfo);

    switch(splInfo.m_video_info.stream_type)
    {
    case H264_VIDEO:
        p_spl1 = new UMC::H264Splitter;
        break;
    default:
        p_spl1 = new UMC::BaseAVISplitter;
        break;
    }

    if(!p_spl1)
        return UMC_ALLOC;

    res = p_spl1->Init(init);

    if(UMC_OK == res)
        m_pSpl = p_spl1;
    else
        m_pSpl = NULL;

    return res;
}

UMC::Status UMC::AVISplitter::Close()
{
    UMC::Status ret;
    if(m_pSpl)
    {
        ret = m_pSpl->Close();
        delete m_pSpl;
        m_pSpl = NULL;
    }

    return ret;

}


UMC::Status UMC::AVISplitter::Stop()
{
    UMC::Status ret;
    if(m_pSpl)
    {
        ret = m_pSpl->Close();
        delete m_pSpl;
        m_pSpl = NULL;
    }

    return ret;

}


UMC::Status UMC::AVISplitter::GetNextVideoData(MediaData* data, unsigned int idx)
{
    Status ret;

    if(m_pSpl)
        ret =  m_pSpl->GetNextVideoData(data, idx);
    else
        ret = UMC_NOT_INITIALIZED;


    return ret;
}


UMC::Status UMC::AVISplitter::CheckNextVideoData(MediaData* data)
{
    Status ret;

    if(m_pSpl)
        ret =  m_pSpl->CheckNextVideoData(data);
    else
        ret = UMC_NOT_INITIALIZED;


    return ret;
}


UMC::Status UMC::AVISplitter::GetNextAudioData(MediaData* data, unsigned int idx)
{
    Status ret;

    if(m_pSpl)
        ret =  m_pSpl->GetNextAudioData(data, idx);
    else
        ret =  UMC_NOT_INITIALIZED;


    return ret;
}

UMC::Status UMC::AVISplitter::CheckNextAudioData(MediaData* data)
{
    Status ret;

    if(m_pSpl)
        ret =  m_pSpl->CheckNextAudioData(data);
    else
        ret =  UMC_NOT_INITIALIZED;


    return ret;
}

UMC::Status UMC::AVISplitter::SetPosition(double pos)
{
    if(m_pSpl)
        return m_pSpl->SetPosition(pos);
    else
        return UMC_NOT_INITIALIZED;
}


UMC::Status UMC::AVISplitter::GetPosition(double& pos)
{
    if(m_pSpl)
        return m_pSpl->GetPosition(pos);
    else
        return UMC_NOT_INITIALIZED;
}


UMC::Status UMC::AVISplitter::GetInfo(UMC::SplitterInfo* info)
{
    if(m_pSpl)
        return m_pSpl->GetInfo(info);
    else
        return UMC_NOT_INITIALIZED;
}