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/*
* Copyright (C) 2003-2006 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, 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#pragma once
/* AC3 audio
wFormatTag WAVE_FORMAT_DOLBY_AC3
nChannels 1 -6 channels valid
nSamplesPerSec 48000, 44100, 32000
nAvgByesPerSec 4000 to 80000
nBlockAlign 128 - 3840
wBitsPerSample Up to 24 bits - (in the original)
*/
typedef struct tagDOLBYAC3WAVEFORMAT
{
WAVEFORMATEX wfx;
BYTE bBigEndian; // TRUE = Big Endian, FALSE little endian
BYTE bsid;
BYTE lfeon;
BYTE copyrightb;
BYTE nAuxBitsCode; // Aux bits per frame
} DOLBYAC3WAVEFORMAT;
//
// CAVI2AC3Filter
//
class __declspec(uuid("93230DD0-7B3C-4efb-AFBB-DC380FEC9E6B"))
CAVI2AC3Filter : public CTransformFilter
{
bool CheckAC3(const CMediaType* pmt);
bool CheckDTS(const CMediaType* pmt);
bool CheckWAVEAC3(const CMediaType* pmt);
bool CheckWAVEDTS(const CMediaType* pmt);
public:
CAVI2AC3Filter(LPUNKNOWN lpunk, HRESULT* phr);
virtual ~CAVI2AC3Filter();
HRESULT Transform(IMediaSample* pIn, IMediaSample* pOut);
HRESULT CheckInputType(const CMediaType* mtIn);
HRESULT CheckTransform(const CMediaType* mtIn, const CMediaType* mtOut);
HRESULT DecideBufferSize(IMemAllocator* pAllocator, ALLOCATOR_PROPERTIES* pProperties);
HRESULT GetMediaType(int iPosition, CMediaType* pMediaType);
};
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