forked from AppleWin/AppleWin
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathRiff.cpp
More file actions
139 lines (97 loc) · 3.74 KB
/
Copy pathRiff.cpp
File metadata and controls
139 lines (97 loc) · 3.74 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
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) 2006-2007, 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 "Stdafx.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;
}