AudioSwitcher.h
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上传日期:2015-12-05
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- // Copyright 2003 Gabest.
- // http://www.gabest.org
- //
- // This program is free software; you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation; either version 2 of the License, or
- // (at your option) any later version.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with this program; if not, write to the Free Software
- // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
- // http://www.gnu.org/copyleft/gpl.html
- #pragma once
- #include "StreamSwitcher.h"
- [uuid("CEDB2890-53AE-4231-91A3-B0AAFCD1DBDE")]
- interface IAudioSwitcherFilter : public IUnknown
- {
- STDMETHOD(GetInputSpeakerConfig) (DWORD* pdwChannelMask) = 0;
- STDMETHOD(GetSpeakerConfig) (bool* pfCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]) = 0;
- STDMETHOD(SetSpeakerConfig) (bool fCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]) = 0;
- STDMETHOD_(int, GetNumberOfInputChannels) () = 0;
- STDMETHOD_(bool, IsDownSamplingTo441Enabled) () = 0;
- STDMETHOD(EnableDownSamplingTo441) (bool fEnable) = 0;
- STDMETHOD_(REFERENCE_TIME, GetAudioTimeShift) () = 0;
- STDMETHOD(SetAudioTimeShift) (REFERENCE_TIME rtAudioTimeShift) = 0;
- };
- class AudioStreamResampler;
- [uuid("18C16B08-6497-420e-AD14-22D21C2CEAB7")]
- class CAudioSwitcherFilter : public CStreamSwitcherFilter, public IAudioSwitcherFilter
- {
- typedef struct {DWORD Speaker, Channel;} ChMap;
- CArray<ChMap> m_chs[18];
- bool m_fCustomChannelMapping;
- DWORD m_pSpeakerToChannelMap[18][18];
- bool m_fDownSampleTo441;
- REFERENCE_TIME m_rtAudioTimeShift;
- CAutoPtrArray<AudioStreamResampler> m_pResamplers;
- REFERENCE_TIME m_rtNextStart, m_rtNextStop;
- public:
- CAudioSwitcherFilter(LPUNKNOWN lpunk, HRESULT* phr);
- DECLARE_IUNKNOWN
- STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);
- HRESULT CheckMediaType(const CMediaType* pmt);
- HRESULT Transform(IMediaSample* pIn, IMediaSample* pOut);
- CMediaType CreateNewOutputMediaType(CMediaType mt, long& cbBuffer);
- void OnNewOutputMediaType(const CMediaType& mtIn, const CMediaType& mtOut);
- // IAudioSwitcherFilter
- STDMETHODIMP GetInputSpeakerConfig(DWORD* pdwChannelMask);
- STDMETHODIMP GetSpeakerConfig(bool* pfCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]);
- STDMETHODIMP SetSpeakerConfig(bool fCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]);
- STDMETHODIMP_(int) GetNumberOfInputChannels();
- STDMETHODIMP_(bool) IsDownSamplingTo441Enabled();
- STDMETHODIMP EnableDownSamplingTo441(bool fEnable);
- STDMETHODIMP_(REFERENCE_TIME) GetAudioTimeShift();
- STDMETHODIMP SetAudioTimeShift(REFERENCE_TIME rtAudioTimeShift);
- };