hxrsmp2.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (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 RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _HXRSMP2_H_
- #define _HXRSMP2_H_
- #include "growingq.h"
- #include "hxcomm.h"
- #include "RAResampler.h"
- typedef enum _AudioChannelConversion
- {
- AUDIO_CHANNEL_NONE,
- AUDIO_CHANNEL_UP,
- AUDIO_CHANNEL_DOWN
- } AudioChannelConversion;
- typedef enum _AudioSampleConversion
- {
- AUDIO_SAMPLE_NONE,
- AUDIO_SAMPLE_NEEDED
- } AudioSampleConversion;
- class HXCDQualityResampler : public IHXAudioResampler
- {
- protected:
- LONG32 m_lRefCount;
- RAExactResampler* m_pResampler;
- AudioChannelConversion m_audioChannelConversion;
- AudioSampleConversion m_audioSampleConversion;
- HXAudioFormat m_inAudioFormat;
- HXAudioFormat m_outAudioFormat;
- UINT32 m_ulSamplesSaved;
- UINT32 m_ulSamplesFixed;
- UINT32 m_ulBytesFixed;
- short* m_pBPS8To16Out;
- void Downmix16(INT16* pIn, UINT32 nSamplesIn);
- void BPS8To16(INT16* pIn, UINT32 ulBytesIn, INT16* pOut, UINT32& ulBytesOut);
- void Close(void);
- void CopyAudioFormat(HXAudioFormat from, REF(HXAudioFormat) to);
- public:
- HXCDQualityResampler();
- ~HXCDQualityResampler();
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_
- REFIID riid,
- void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- /*
- * IHXResampler methods
- */
- /*
- * IHXResampler methods
- */
- /**********************************************************************
- * Method:
- * IHXAudioResampler::Resample
- * Purpose:
- * Will produce 1 output frame for every (upFactor/downFactor) inputs
- * frames, straddling if not an integer. Works down to 1 sample/call.
- *
- * Returns actual number of output frames.
- ***********************************************************************/
- STDMETHOD_(UINT32, Resample) ( THIS_
- UINT16* pInput,
- UINT32 ulInputBytes,
- UINT16* pOutput);
- /**********************************************************************
- * Method:
- * IHXAudioResampler::Requires
- * Purpose:
- * Returns number of input frames required to produce this number
- * of output frames, given the current state of the filter.
- */
- STDMETHOD_(UINT32, Requires) ( THIS_
- UINT32 ulOutputFrames);
- HX_RESULT Init(HXAudioFormat inAudioFormat,
- REF(HXAudioFormat) outAudioFormat);
- };
- #endif //_HXRSMP2_H_