111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* $Id: iofile.c 1.5 1996/08/05 18:51:19 chasan released $
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*
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* Input/Output file stream routines.
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*
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* Copyright (c) 1995-1999 Carlos Hasan
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdio.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include "audio.h"
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#include "iofile.h"
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/*
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* Audio I/O file stream routines
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*/
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static FILE *lpStream;
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UINT AIAPI AIOOpenFile(LPSTR lpszFileName)
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{
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if ((lpStream = fopen(lpszFileName, "rb")) != NULL)
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return AUDIO_ERROR_NONE;
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return AUDIO_ERROR_FILENOTFOUND;
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}
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UINT AIAPI AIOCloseFile(VOID)
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{
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fclose(lpStream);
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOSeekFile(LONG dwOffset, UINT nWhere)
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{
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fseek(lpStream, dwOffset, nWhere);
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOReadFile(LPVOID lpData, UINT nSize)
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{
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if (fread(lpData, 1, nSize, lpStream) != nSize)
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memset(lpData, 0, nSize);
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return AUDIO_ERROR_NONE;
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}
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/* little-endian input routines */
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UINT AIAPI AIOReadChar(LPBYTE lpData)
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{
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if (fread(lpData, 1, sizeof(BYTE), lpStream) != sizeof(BYTE))
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memset(lpData, 0, sizeof(BYTE));
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOReadShort(LPWORD lpData)
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{
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if (fread(lpData, 1, sizeof(WORD), lpStream) != sizeof(WORD))
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memset(lpData, 0, sizeof(WORD));
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#ifdef __BIGENDIAN__
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*lpData = MAKEWORD(HIBYTE(*lpData), LOBYTE(*lpData));
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#endif
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOReadLong(LPDWORD lpData)
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{
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if (fread(lpData, 1, sizeof(DWORD), lpStream) != sizeof(DWORD))
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memset(lpData, 0, sizeof(DWORD));
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#ifdef __BIGENDIAN__
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*lpData = MAKELONG(
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MAKEWORD(HIBYTE(HIWORD(*lpData)), LOBYTE(HIWORD(*lpData))),
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MAKEWORD(HIBYTE(LOWORD(*lpData)), LOBYTE(LOWORD(*lpData))));
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#endif
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return AUDIO_ERROR_NONE;
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}
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/* big-endian input routines */
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UINT AIAPI AIOReadCharM(LPBYTE lpData)
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{
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if (fread(lpData, 1, sizeof(BYTE), lpStream) != sizeof(BYTE))
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memset(lpData, 0, sizeof(BYTE));
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOReadShortM(LPWORD lpData)
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{
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if (fread(lpData, 1, sizeof(WORD), lpStream) != sizeof(WORD))
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memset(lpData, 0, sizeof(WORD));
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#ifndef __BIGENDIAN__
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*lpData = MAKEWORD(HIBYTE(*lpData), LOBYTE(*lpData));
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#endif
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return AUDIO_ERROR_NONE;
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}
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UINT AIAPI AIOReadLongM(LPDWORD lpData)
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{
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if (fread(lpData, 1, sizeof(DWORD), lpStream) != sizeof(DWORD))
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memset(lpData, 0, sizeof(DWORD));
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#ifndef __BIGENDIAN__
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*lpData = MAKELONG(
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MAKEWORD(HIBYTE(HIWORD(*lpData)), LOBYTE(HIWORD(*lpData))),
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MAKEWORD(HIBYTE(LOWORD(*lpData)), LOBYTE(LOWORD(*lpData))));
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#endif
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return AUDIO_ERROR_NONE;
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}
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