- Main Page
- Namespaces
- Classes
- Files
- Directories

- File List
- File Members

# AudioSwitcher.h

    00001 // Copyright 2003 Gabest.
    00002 // http://www.gabest.org
    00003 //
    00004 // This program is free software; you can redistribute it and/or modify
    00005 // it under the terms of the GNU General Public License as published by
    00006 // the Free Software Foundation; either version 2 of the License, or
    00007 // (at your option) any later version.
    00008 //
    00009 // This program is distributed in the hope that it will be useful,
    00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00012 // GNU General Public License for more details.
    00013 //
    00014 // You should have received a copy of the GNU General Public License
    00015 // along with this program; if not, write to the Free Software
    00016 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
    00017 // http://www.gnu.org/copyleft/gpl.html
    00018
    00019 #pragma once
    00020
    00021 #include "StreamSwitcher.h"
    00022
    00023 [uuid("CEDB2890-53AE-4231-91A3-B0AAFCD1DBDE")]
    00024 interface IAudioSwitcherFilter : public IUnknown
    00025 {
    00026         STDMETHOD(GetInputSpeakerConfig) (DWORD* pdwChannelMask) = 0;
    00027     STDMETHOD(GetSpeakerConfig) (bool* pfCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]) = 0;
    00028     STDMETHOD(SetSpeakerConfig) (bool fCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]) = 0;
    00029     STDMETHOD_(int, GetNumberOfInputChannels) () = 0;
    00030         STDMETHOD_(bool, IsDownSamplingTo441Enabled) () = 0;
    00031         STDMETHOD(EnableDownSamplingTo441) (bool fEnable) = 0;
    00032         STDMETHOD_(REFERENCE_TIME, GetAudioTimeShift) () = 0;
    00033         STDMETHOD(SetAudioTimeShift) (REFERENCE_TIME rtAudioTimeShift) = 0;
    00034 };
    00035
    00036 class AudioStreamResampler;
    00037
    00038 [uuid("18C16B08-6497-420e-AD14-22D21C2CEAB7")]
    00039 class CAudioSwitcherFilter : public CStreamSwitcherFilter, public IAudioSwitcherFilter
    00040 {
    00041         typedef struct {DWORD Speaker, Channel;} ChMap;
    00042         CArray<ChMap> m_chs[18];
    00043
    00044         bool m_fCustomChannelMapping;
    00045         DWORD m_pSpeakerToChannelMap[18][18];
    00046         bool m_fDownSampleTo441;
    00047         REFERENCE_TIME m_rtAudioTimeShift;
    00048         CAutoPtrArray<AudioStreamResampler> m_pResamplers;
    00049
    00050         REFERENCE_TIME m_rtNextStart, m_rtNextStop;
    00051
    00052 public:
    00053         CAudioSwitcherFilter(LPUNKNOWN lpunk, HRESULT* phr);
    00054
    00055         DECLARE_IUNKNOWN
    00056     STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);
    00057
    00058         HRESULT CheckMediaType(const CMediaType* pmt);
    00059         HRESULT Transform(IMediaSample* pIn, IMediaSample* pOut);
    00060         CMediaType CreateNewOutputMediaType(CMediaType mt, long& cbBuffer);
    00061         void OnNewOutputMediaType(const CMediaType& mtIn, const CMediaType& mtOut);
    00062
    00063         // IAudioSwitcherFilter
    00064         STDMETHODIMP GetInputSpeakerConfig(DWORD* pdwChannelMask);
    00065     STDMETHODIMP GetSpeakerConfig(bool* pfCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]);
    00066     STDMETHODIMP SetSpeakerConfig(bool fCustomChannelMapping, DWORD pSpeakerToChannelMap[18][18]);
    00067     STDMETHODIMP_(int) GetNumberOfInputChannels();
    00068         STDMETHODIMP_(bool) IsDownSamplingTo441Enabled();
    00069         STDMETHODIMP EnableDownSamplingTo441(bool fEnable);
    00070         STDMETHODIMP_(REFERENCE_TIME) GetAudioTimeShift();
    00071         STDMETHODIMP SetAudioTimeShift(REFERENCE_TIME rtAudioTimeShift);
    00072 };