group_info.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: group_info.cpp,v 1.3.4.1 2004/11/24 18:02:52 acolwell Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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 * The contents of this file, and the files included with this file,
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 * Source License (the "RPSL") available at
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
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 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
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 * "GPL") in which case the provisions of the GPL are applicable
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 * This file is part of the Helix DNA Technology. RealNetworks is the
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 * ***** END LICENSE BLOCK ***** */
#include "group_info.h"
#include "codec_info.h"

COggGroupInfo::COggGroupInfo(ULONG32 ulStartPageOffset,
                             UINT32 uStartPageSize,
                             ULONG32 ulEndPageOffset,
                             const COggTimestamp& duration) :
    m_ulStartPageOffset(ulStartPageOffset),
    m_uStartPageSize(uStartPageSize),
    m_ulEndPageOffset(ulEndPageOffset),
    m_duration(duration),
    m_pSerialNums(NULL)
{}

COggGroupInfo::~COggGroupInfo()
{
    delete [] m_pSerialNums;
    m_pSerialNums = NULL;

    CHXMapLongToObj::Iterator itr = m_codecInfoMap.Begin();

    for (;itr != m_codecInfoMap.End(); ++itr)
    {
        COggCodecInfo* pInfo = (COggCodecInfo*)*itr;

        delete pInfo;
    }
    m_codecInfoMap.RemoveAll();
}

HX_RESULT 
COggGroupInfo::GetStartPageOffset(ULONG32& ulStartPageOffset) const
{
    ulStartPageOffset = m_ulStartPageOffset;

    return HXR_OK;
}

HX_RESULT 
COggGroupInfo::GetPageOffsetInfo(ULONG32& ulStartPageOffset, 
                                 UINT32& ulStartPageSize,
                                 ULONG32& ulEndPageOffset) const
{
    ulStartPageOffset = m_ulStartPageOffset;
    ulStartPageSize = m_uStartPageSize;
    ulEndPageOffset = m_ulEndPageOffset;

    return HXR_OK;
}

HX_RESULT 
COggGroupInfo::GetStartTime(COggTimestamp& startTime) const
{
    startTime = m_startTime;
    return HXR_OK;
}
    
HX_RESULT 
COggGroupInfo::GetDuration(COggTimestamp& duration) const
{
    duration = m_duration;
    return HXR_OK;
}

HX_RESULT 
COggGroupInfo::GetTimestamp(int serialNum, ogg_int64_t granulepos,
                            COggTimestamp& timestamp) const
{
    const COggCodecInfo* pCodecInfo = NULL;
    COggTimestamp startTime;

    HX_RESULT res = GetCodecInfo(serialNum, pCodecInfo);

    if (HXR_OK == res)
    {
        res = pCodecInfo->GetTimestamp(granulepos, timestamp);
    }

    return res;
}

UINT32 COggGroupInfo::StreamCount() const
{
    return (UINT32)m_codecInfoMap.GetCount();
}

HX_RESULT
COggGroupInfo::GetStreamSerialNum(UINT32 uStreamIndex, int& serialNum) const
{
    HX_RESULT res = HXR_INVALID_PARAMETER;

    if (uStreamIndex < StreamCount())
    {
        serialNum = m_pSerialNums[uStreamIndex];
        res = HXR_OK;
    }

    return res;
}

HX_RESULT 
COggGroupInfo::GetCodecInfo(int serialNum, 
                            const COggCodecInfo*& pCodecInfo) const
{
    HX_RESULT res = HXR_INVALID_PARAMETER;
    
    COggCodecInfo* pInfo = NULL;

    if (m_codecInfoMap.Lookup(serialNum, (void*&)pInfo) &&
        pInfo)
    {
        pCodecInfo = pInfo;
        res = HXR_OK;
    }

    return res;
}

void COggGroupInfo::SetStartTime(const COggTimestamp& startTime)
{
    m_startTime = startTime;

    CHXMapLongToObj::Iterator itr = m_codecInfoMap.Begin();

    for (;itr != m_codecInfoMap.End(); ++itr)
    {
        COggCodecInfo* pInfo = (COggCodecInfo*)*itr;

        if (pInfo)
        {
            pInfo->SetStartTimestamp(startTime);
        }
    }
}

HX_RESULT 
COggGroupInfo::AddCodecInfo(int serialNum, const COggCodecInfo* pCodecInfo)
{
    HX_RESULT res = HXR_INVALID_PARAMETER;
    const COggCodecInfo* pInfo = NULL;

    if (pCodecInfo && (HXR_OK != GetCodecInfo(serialNum, pInfo)))
    {
        int oldSize = StreamCount();
        int* pNewSerialNums = new int [oldSize + 1];

        pInfo = pCodecInfo->Clone();

        if (pInfo && pNewSerialNums && m_codecInfoMap.SetAt(serialNum, 
                                                            (void*)pInfo))
        {
            if (m_pSerialNums)
            {
                memcpy(pNewSerialNums, m_pSerialNums, sizeof(int) * oldSize);
                delete [] m_pSerialNums;
            }

            m_pSerialNums = pNewSerialNums;
            m_pSerialNums[oldSize] = serialNum;
            res = HXR_OK;
        }
        else
        {
            res = HXR_OUTOFMEMORY;

            delete pInfo;
            delete [] pNewSerialNums;
        }

    }

    return res;
}