rafixptresampler.cpp

来自「symbian 下的helix player源代码」· C++ 代码 · 共 107 行

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: RAFixPtResampler.cpp,v 1.1.20.1 2004/07/09 02:01:17 hubbe Exp $
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#include "RAResampler.h"

// Create a resampler with a given quality level.
HX_RESULT 
RAExactResampler::Create(RAExactResampler** pRes, int inrate, int outrate,
			 int chans, int intype, Quality quality)
{
    *pRes = NULL;

    HX_ASSERT(intype == _INT16);
    if (intype == _INT16)
    {
	if ((*pRes = new RAExactResampler()) != NULL)
	{
	    (*pRes)->m_pInst = InitResampler(inrate, outrate, chans, (int)quality);
	}
    }

    return ((*pRes && (*pRes)->m_pInst) ? HXR_OK : HXR_FAIL);
}


RAExactResampler::RAExactResampler()
    : m_pInst(NULL)
{}


RAExactResampler::~RAExactResampler()
{
    if (m_pInst)
	FreeResampler(m_pInst);
}


int
RAExactResampler::GetMaxOutput(int insamps)
{
    HX_ASSERT(m_pInst);
    return ::GetMaxOutput(insamps, m_pInst);
}


int
RAExactResampler::GetMinInput(int outsamps)
{
    HX_ASSERT(m_pInst);
    return ::GetMinInput(outsamps, m_pInst);
}


int
RAExactResampler::GetDelay()
{
    HX_ASSERT(m_pInst);
    return ::GetDelay(m_pInst);
}