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279 lines
7.6 KiB
279 lines
7.6 KiB
//==========================================================================;
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (c) 1992-1998 Microsoft Corporation
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//
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//--------------------------------------------------------------------------;
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//
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// codec.h
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//
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// Description:
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// This file contains codec definitions, Win16/Win32 compatibility
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// definitions, and instance structure definitions.
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//
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//
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// History:
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// 11/16/92 cjp [curtisp]
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//
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//==========================================================================;
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// ACM Driver Version:
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//
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// the version is a 32 bit number that is broken into three parts as
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// follows:
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//
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// bits 24 - 31: 8 bit _major_ version number
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// bits 16 - 23: 8 bit _minor_ version number
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// bits 0 - 15: 16 bit build number
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//
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// this is then displayed as follows (in decimal form):
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//
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// bMajor = (BYTE)(dwVersion >> 24)
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// bMinor = (BYTE)(dwVersion >> 16) &
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// wBuild = LOWORD(dwVersion)
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//
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// VERSION_CODEC is the version of this driver.
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// VERSION_MSACM is the version of the ACM that this driver
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// was designed for (requires).
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//
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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#ifdef WIN32
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//
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// 32-bit versions
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//
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#if (WINVER >= 0x0400)
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#define VERSION_CODEC MAKE_ACM_VERSION(4, 0, 0)
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#else
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#define VERSION_CODEC MAKE_ACM_VERSION(3, 51, 0)
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#endif
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#define VERSION_MSACM MAKE_ACM_VERSION(3, 50, 0)
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#else
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//
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// 16-bit versions
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//
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#define VERSION_CODEC MAKE_ACM_VERSION(2, 1, 0)
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#define VERSION_MSACM MAKE_ACM_VERSION(2, 1, 0)
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#endif
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// Win 16/32 portability stuff...
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//
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//
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//
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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#ifndef WIN32
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#ifndef FNLOCAL
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#define FNLOCAL NEAR PASCAL
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#define FNCLOCAL NEAR _cdecl
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#define FNGLOBAL FAR PASCAL
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#define FNCGLOBAL FAR _cdecl
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#ifdef _WINDLL
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#define FNWCALLBACK FAR PASCAL _loadds
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#define FNEXPORT FAR PASCAL _export
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#else
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#define FNWCALLBACK FAR PASCAL
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#define FNEXPORT FAR PASCAL _export
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#endif
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#endif
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//
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//
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//
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//
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#ifndef FIELD_OFFSET
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#define FIELD_OFFSET(type, field) ((LONG)&(((type *)0)->field))
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#endif
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//
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// based code makes since only in win 16 (to try and keep stuff out of
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// our fixed data segment...
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//
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#define BCODE _based(_segname("_CODE"))
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#define HUGE _huge
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//
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// stuff for Unicode in Win 32--make it a noop in Win 16
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//
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#ifndef _TCHAR_DEFINED
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#define _TCHAR_DEFINED
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typedef char TCHAR, *PTCHAR;
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typedef unsigned char TBYTE, *PTUCHAR;
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typedef PSTR PTSTR, PTCH;
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typedef LPSTR LPTSTR, LPTCH;
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typedef LPCSTR LPCTSTR;
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#endif
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#define TEXT(a) a
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#define SIZEOF(x) sizeof(x)
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#define SIZEOFACMSTR(x) sizeof(x)
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#else
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#ifndef FNLOCAL
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#define FNLOCAL _stdcall
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#define FNCLOCAL _stdcall
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#define FNGLOBAL _stdcall
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#define FNCGLOBAL _stdcall
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#define FNWCALLBACK CALLBACK
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#define FNEXPORT CALLBACK
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#endif
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#ifndef try
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#define try __try
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#define leave __leave
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#define except __except
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#define finally __finally
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#endif
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//
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// there is no reason to have based stuff in win 32
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//
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#define BCODE
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#define HUGE
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#define HTASK HANDLE
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#define SELECTOROF(a) (a)
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//
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// for compiling Unicode
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//
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#ifdef UNICODE
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#define SIZEOF(x) (sizeof(x)/sizeof(WCHAR))
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#else
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#define SIZEOF(x) sizeof(x)
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#endif
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#define SIZEOFACMSTR(x) (sizeof(x)/sizeof(WCHAR))
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#endif
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// misc defines for misc sizes and things...
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//
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//
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// bilingual. this allows the same identifier to be used in resource files
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// and code without having to decorate the id in your code.
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//
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#ifdef RC_INVOKED
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#define RCID(id) id
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#else
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#define RCID(id) MAKEINTRESOURCE(id)
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#endif
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//
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// macros to compute block alignment and convert between samples and bytes
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// of PCM data. note that these macros assume:
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//
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// wBitsPerSample = 8 or 16
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// nChannels = 1 or 2
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//
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// the pwf argument is a pointer to a WAVEFORMATEX structure.
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//
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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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//
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//
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//
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#define MAX_ERR_STRING 250 // used in various places for errors
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//
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//
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//
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//
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typedef struct tCODECINST
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{
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//
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// although not required, it is suggested that the first two members
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// of this structure remain as fccType and DriverProc _in this order_.
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// the reason for this is that the codec will be easier to combine
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// with other types of codecs (defined by AVI) in the future.
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//
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FOURCC fccType; // type of codec: 'audc'
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DRIVERPROC DriverProc; // driver proc for the instance
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//
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// the remaining members of this structure are entirely open to what
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// your codec requires.
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//
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HDRVR hdrvr; // driver handle we were opened with
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HINSTANCE hinst; // DLL module handle.
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DWORD vdwACM; // current version of ACM opening you
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DWORD dwFlags; // flags from open description
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} CODECINST, *PCODECINST, FAR *LPCODECINST;
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// typedefs
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//
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//
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//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
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//
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// This define deals with unaligned data for Win32, and huge data for Win16.
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// Basically, any time you cast an HPBYTE to a non-byte variable (ie long or
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// short), you should cast it to ( {short,long} HUGE_T *). This will cast
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// it to _huge for Win16, and make sure that there are no alignment problems
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// for Win32 on MIPS and Alpha machines.
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//
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typedef BYTE HUGE *HPBYTE;
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#ifdef WIN32
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#define HUGE_T UNALIGNED
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#else
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#define HUGE_T _huge
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#endif
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typedef DWORD (FNGLOBAL *CONVERTPROC_ASM)(LPWAVEFORMATEX, LPBYTE, LPWAVEFORMATEX, LPBYTE, DWORD);
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typedef DWORD (FNGLOBAL *CONVERTPROC_C)
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(
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HPBYTE pbSrc,
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DWORD cbSrcLength,
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HPBYTE pbDst,
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UINT nBlockAlignment,
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UINT cSamplesPerBlock,
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UINT nNumCoef,
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LPADPCMCOEFSET lpCoefSet
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);
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//
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// resource id's
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//
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//
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#define ICON_CODEC RCID(10)
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#define IDS_CODEC_SHORTNAME (1) // ACMCONVINFO.szShortName
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#define IDS_CODEC_LONGNAME (2) // ACMCONVINFO.szLongName
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#define IDS_CODEC_COPYRIGHT (3) // ACMCONVINFO.szCopyright
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#define IDS_CODEC_LICENSING (4) // ACMCONVINFO.szLicensing
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#define IDS_CODEC_FEATURES (5) // ACMCONVINFO.szFeatures
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#define IDS_CODEC_NAME (10)
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