204 lines
6.7 KiB
C
204 lines
6.7 KiB
C
//==========================================================================
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//
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// lhacm.h
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//
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// Copyright (c) 1992 - 1996 Microsoft Corporation. All Rights Reserved.
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//
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//==========================================================================
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#ifndef _LHACM_H_
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#define _LHACM_H_
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#define _T(s) __TEXT (s)
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#define TRACE_FUN
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#ifdef DEBUG
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#ifndef _DEBUG
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#define _DEBUG
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#endif
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#endif
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#ifdef _DEBUG
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#include <assert.h>
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#ifdef TRACE_FUN
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#define FUNCTION_ENTRY(s) \
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static TCHAR _szFunName_[] = _T ("LH::") _T (s); \
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MyDbgPrintf (_T ("%s\r\n"), (LPTSTR) _szFunName_);
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#else
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#define FUNCTION_ENTRY(s) \
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static TCHAR _szFunName_[] = _T (s);
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#endif
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#define SZFN ((LPTSTR) _szFunName_)
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#define DBGMSG(z,s) ((z) ? (MyDbgPrintf s) : 0);
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#else
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#define FUNCTION_ENTRY(s)
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#define SZFN
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#define DBGMSG(z,s)
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#endif
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#define SIZEOFACMSTR(x) (sizeof(x)/sizeof(WCHAR))
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void FAR CDECL MyDbgPrintf ( LPTSTR lpszFormat, ... );
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//==========================================================================;
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//
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// Version info
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//
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//==========================================================================;
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// !!! Need to assign a WAVE_FORMAT tag to the codec
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#include "temp.h" // from common\h\temp.h
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//Use CELP on _x86_ but not Alpha
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#ifndef _ALPHA_
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#define CELP4800
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#endif
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#define VERSION_ACM_DRIVER MAKE_ACM_VERSION(1, 0, 1)
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#define VERSION_MSACM MAKE_ACM_VERSION(2, 1, 0)
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// !!! Need to assign valid MID and PID
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#define MM_ACM_MID_LH MM_MICROSOFT
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#define MM_ACM_PID_LH 90
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// !!! need to assign IDs
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#define MM_LERNOUTHAUSPIE_ACM_CELP 0x70
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#define MM_LERNOUTHAUSPIE_ACM_SB8 0x71
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#define MM_LERNOUTHAUSPIE_ACM_SB12 0x72
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#define MM_LERNOUTHAUSPIE_ACM_SB16 0x73
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//==========================================================================;
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//
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// Helper routines
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//
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//==========================================================================;
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#define SIZEOF_ARRAY(ar) (sizeof(ar)/sizeof((ar)[0]))
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#define PCM_BLOCKALIGNMENT(pwfx) (UINT)(((pwfx)->wBitsPerSample >> 3) << ((pwfx)->nChannels >> 1))
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#define PCM_AVGBYTESPERSEC(pwfx) (DWORD)((pwfx)->nSamplesPerSec * (pwfx)->nBlockAlign)
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#define PCM_BYTESTOSAMPLES(pwfx, cb) (DWORD)(cb / PCM_BLOCKALIGNMENT(pwfx))
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#define PCM_SAMPLESTOBYTES(pwfx, dw) (DWORD)(dw * PCM_BLOCKALIGNMENT(pwfx))
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// !!! need defines for all four l&h codecs
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#define LH_BITSPERSAMPLE 16
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#define LH_SAMPLESPERSEC 8000
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#define LH_PCM_SAMPLESPERSEC LH_SAMPLESPERSEC
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#define LH_PCM_BITSPERSAMPLE LH_BITSPERSAMPLE
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#ifdef CELP4800
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#define LH_CELP_SAMPLESPERSEC LH_SAMPLESPERSEC
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#define LH_CELP_BITSPERSAMPLE LH_BITSPERSAMPLE
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#define LH_CELP_BLOCKALIGNMENT 2
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#endif
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#define LH_SB8_SAMPLESPERSEC LH_SAMPLESPERSEC
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#define LH_SB8_BITSPERSAMPLE LH_BITSPERSAMPLE
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#define LH_SB8_BLOCKALIGNMENT 2
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#define LH_SB12_SAMPLESPERSEC LH_SAMPLESPERSEC
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#define LH_SB12_BITSPERSAMPLE LH_BITSPERSAMPLE
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#define LH_SB12_BLOCKALIGNMENT 2
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#define LH_SB16_SAMPLESPERSEC LH_SAMPLESPERSEC
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#define LH_SB16_BITSPERSAMPLE LH_BITSPERSAMPLE
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#define LH_SB16_BLOCKALIGNMENT 2
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// !!! l&h probably does not need an extended header...tbd
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// lonchanc: we don't need an extended header
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// because we will use separate wave format tags for
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// different coding techniques.
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//==========================================================================;
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//
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// Supported configurations
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//
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//==========================================================================;
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#define LH_MAX_CHANNELS 1
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//==========================================================================;
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//
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// Global storage and defs
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//
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//==========================================================================;
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typedef HANDLE (LH_SUFFIX * PFN_OPEN) ( void );
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typedef LH_ERRCODE (LH_SUFFIX * PFN_CONVERT) ( HANDLE, LPBYTE, LPWORD, LPBYTE, LPWORD );
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typedef LH_ERRCODE (LH_SUFFIX * PFN_CLOSE) ( HANDLE );
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typedef struct tagCODECDATA
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{
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DWORD wFormatTag;
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CODECINFO CodecInfo;
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}
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CODECDATA, *PCODECDATA;
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typedef struct tagSTREAMINSTANCEDATA
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{
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BOOL fInit; // TRUE if this stream has been initialized
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BOOL fCompress; // TRUE if we're compressing
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HANDLE hAccess;
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PCODECDATA pCodecData; // shortcut to instance data's celp, sb8, sb12, or sb16.
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PFN_CONVERT pfnConvert; // pointer to the encoder/decoder function
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PFN_CLOSE pfnClose; // pointer to the close function
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DWORD dwMaxBitRate; // bit rate of the codec
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WORD cbData; // valid data
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BYTE Data[2]; // max size is wCodedBufferSize
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}
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STREAMINSTANCEDATA, FAR *PSTREAMINSTANCEDATA;
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typedef struct tagINSTANCEDATA
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{
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WORD cbStruct;
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BOOL fInit;
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HINSTANCE hInst;
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CODECDATA CELP;
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CODECDATA SB8;
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CODECDATA SB12;
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CODECDATA SB16;
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WORD wPacketData;// packet by packet audio data (decoding only)
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}
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INSTANCEDATA, *PINSTANCEDATA;
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//==========================================================================;
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//
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// Function prototypes
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//
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//==========================================================================;
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BOOL pcmIsValidFormat( LPWAVEFORMATEX pwfx );
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BOOL lhacmIsValidFormat( LPWAVEFORMATEX pwfx, PINSTANCEDATA pid );
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BOOL CALLBACK DlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam);
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LRESULT FAR PASCAL acmdDriverOpen( HDRVR hdrvr, LPACMDRVOPENDESC paod );
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LRESULT FAR PASCAL acmdDriverClose( PINSTANCEDATA pid );
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LRESULT FAR PASCAL acmdDriverConfigure( PINSTANCEDATA pid, HWND hwnd, LPDRVCONFIGINFO pdci );
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LRESULT FAR PASCAL acmdDriverDetails( PINSTANCEDATA pid, LPACMDRIVERDETAILS padd );
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LRESULT FAR PASCAL acmdDriverAbout( PINSTANCEDATA pid, HWND hwnd );
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LRESULT FAR PASCAL acmdFormatSuggest( PINSTANCEDATA pid, LPACMDRVFORMATSUGGEST padfs );
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LRESULT FAR PASCAL acmdFormatTagDetails( PINSTANCEDATA pid, LPACMFORMATTAGDETAILS padft, DWORD fdwDetails );
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LRESULT FAR PASCAL acmdFormatDetails( PINSTANCEDATA pid, LPACMFORMATDETAILS padf, DWORD fdwDetails );
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LRESULT FAR PASCAL acmdStreamOpen( PINSTANCEDATA pid, LPACMDRVSTREAMINSTANCE padsi );
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LRESULT FAR PASCAL acmdStreamClose( PINSTANCEDATA pid, LPACMDRVSTREAMINSTANCE padsi );
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LRESULT FAR PASCAL acmdStreamSize( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMSIZE padss );
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LRESULT FAR PASCAL acmdStreamConvert( PINSTANCEDATA pid, LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh );
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LRESULT CALLBACK DriverProc(DWORD_PTR dwId, HDRVR hdrvr, UINT uMsg, LPARAM lParam1, LPARAM lParam2 );
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#endif // _LHACM_H_
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