mirror of
https://github.com/AppleWin/AppleWin.git
synced 2024-11-14 03:09:01 +00:00
140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
/*
|
|
AppleWin : An Apple //e emulator for Windows
|
|
|
|
Copyright (C) 1994-1996, Michael O'Brien
|
|
Copyright (C) 1999-2001, Oliver Schmidt
|
|
Copyright (C) 2002-2005, Tom Charlesworth
|
|
Copyright (C) 2006, Tom Charlesworth, Michael Pohoreski
|
|
|
|
AppleWin 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
AppleWin 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 AppleWin; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/* Description: RIFF funcs
|
|
*
|
|
* Author: Various
|
|
*/
|
|
|
|
#include <windows.h>
|
|
#include "riff.h"
|
|
|
|
static HANDLE g_hRiffFile = INVALID_HANDLE_VALUE;
|
|
static DWORD dwTotalOffset;
|
|
static DWORD dwDataOffset;
|
|
static DWORD g_dwTotalNumberOfBytesWritten = 0;
|
|
static unsigned int g_NumChannels = 2;
|
|
|
|
int RiffInitWriteFile(char* pszFile, unsigned int sample_rate, unsigned int NumChannels)
|
|
{
|
|
g_hRiffFile = CreateFile(pszFile, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
|
|
|
|
if(g_hRiffFile == INVALID_HANDLE_VALUE)
|
|
return 1;
|
|
|
|
g_NumChannels = NumChannels;
|
|
|
|
//
|
|
|
|
UINT32 temp32;
|
|
UINT16 temp16;
|
|
|
|
DWORD dwNumberOfBytesWritten;
|
|
|
|
WriteFile(g_hRiffFile, "RIFF", 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = 0; // total size
|
|
dwTotalOffset = SetFilePointer(g_hRiffFile, 0, NULL, FILE_CURRENT);
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
WriteFile(g_hRiffFile, "WAVE", 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
//
|
|
|
|
WriteFile(g_hRiffFile, "fmt ", 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = 16; // format length
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp16 = 1; // PCM format
|
|
WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp16 = NumChannels; // channels
|
|
WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = sample_rate; // sample rate
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = sample_rate * 2 * NumChannels; // bytes/second
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp16 = 2 * NumChannels; // block align
|
|
WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp16 = 16; // bits/sample
|
|
WriteFile(g_hRiffFile, &temp16, 2, &dwNumberOfBytesWritten, NULL);
|
|
|
|
//
|
|
|
|
WriteFile(g_hRiffFile, "data", 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = 0; // data length
|
|
dwDataOffset = SetFilePointer(g_hRiffFile, 0, NULL, FILE_CURRENT);
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int RiffFinishWriteFile()
|
|
{
|
|
if(g_hRiffFile == INVALID_HANDLE_VALUE)
|
|
return 1;
|
|
|
|
//
|
|
|
|
UINT32 temp32;
|
|
|
|
DWORD dwNumberOfBytesWritten;
|
|
|
|
temp32 = g_dwTotalNumberOfBytesWritten - (dwTotalOffset + 4);
|
|
SetFilePointer(g_hRiffFile, dwTotalOffset, NULL, FILE_BEGIN);
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
temp32 = g_dwTotalNumberOfBytesWritten - (dwDataOffset + 4);
|
|
SetFilePointer(g_hRiffFile, dwDataOffset, NULL, FILE_BEGIN);
|
|
WriteFile(g_hRiffFile, &temp32, 4, &dwNumberOfBytesWritten, NULL);
|
|
|
|
return CloseHandle(g_hRiffFile);
|
|
}
|
|
|
|
int RiffPutSamples(short* buf, unsigned int uSamples)
|
|
{
|
|
if(g_hRiffFile == INVALID_HANDLE_VALUE)
|
|
return 1;
|
|
|
|
//
|
|
|
|
DWORD dwNumberOfBytesWritten;
|
|
|
|
BOOL bRes = WriteFile(
|
|
g_hRiffFile,
|
|
buf,
|
|
uSamples * sizeof(short) * g_NumChannels,
|
|
&dwNumberOfBytesWritten,
|
|
NULL);
|
|
|
|
g_dwTotalNumberOfBytesWritten += dwNumberOfBytesWritten;
|
|
|
|
return 0;
|
|
}
|