]> git.saurik.com Git - wxWidgets.git/blob - contrib/src/mmedia/sndbase.cpp
corrected version number extraction
[wxWidgets.git] / contrib / src / mmedia / sndbase.cpp
1 // --------------------------------------------------------------------------
2 // Name: sndbase.cpp
3 // Purpose:
4 // Date: 08/11/1999
5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999, 2000
6 // CVSID: $Id$
7 // wxWindows licence
8 // --------------------------------------------------------------------------
9 #ifdef __GNUG__
10 #pragma implementation "sndbase.cpp"
11 #endif
12
13 #include "wx/wxprec.h"
14
15 #ifndef WX_PRECOMP
16 #include "wx/defs.h"
17 #include "wx/string.h"
18 #include "wx/log.h"
19 #endif
20
21 #include "wx/mmedia/sndbase.h"
22
23
24 // ---------------------------------------------------------------------------
25 // wxSoundFormatBase
26 // ---------------------------------------------------------------------------
27
28 wxSoundFormatBase::wxSoundFormatBase()
29 {
30 }
31
32 wxSoundFormatBase::~wxSoundFormatBase()
33 {
34 }
35
36 wxSoundFormatBase *wxSoundFormatBase::Clone() const
37 {
38 wxLogFatalError(wxT("In wxSoundFormatBase::Clone() but I should")
39 wxT(" not be there"));
40 return NULL;
41 }
42
43 bool wxSoundFormatBase::operator!=(const wxSoundFormatBase& frmt2) const
44 {
45 return (GetType() != frmt2.GetType());
46 }
47
48 // ---------------------------------------------------------------------------
49 // wxSoundStream
50 // ---------------------------------------------------------------------------
51
52 wxSoundStream::wxSoundStream()
53 {
54 int i;
55
56 // Reset all variables to their neutral value.
57 m_sndformat = NULL;
58 m_handler = NULL;
59 m_snderror = wxSOUND_NOERROR;
60 m_lastcount = 0;
61 for (i=0;i<2;i++)
62 m_callback[i] = NULL;
63 }
64
65 wxSoundStream::~wxSoundStream()
66 {
67 if (m_sndformat)
68 delete m_sndformat;
69 }
70
71 // --------------------------------------------------------------------------
72 // SetSoundFormat(const wxSoundFormatBase& format) is one of the most
73 // important function of the wxSoundStream class. It prepares the stream to
74 // receive or send the data in a strict format. Normally, the sound stream
75 // should be ready to accept any format it is asked to manage but in certain
76 // cases, it really cannot: in that case it returns false. To have more
77 // details in the functionnalities of SetSoundFormat see
78 // wxSoundRouterStream::SetSoundFormat()
79 // --------------------------------------------------------------------------
80 bool wxSoundStream::SetSoundFormat(const wxSoundFormatBase& format)
81 {
82 // delete the previous prepared format
83 if (m_sndformat)
84 delete m_sndformat;
85
86 // create a new one by cloning the format passed in parameter
87 m_sndformat = format.Clone();
88 return true;
89 }
90
91
92 // --------------------------------------------------------------------------
93 // Register(int evt, ...) registers the callback for a specified async event.
94 // Warning ! Only one callback by event is supported. It means that if you
95 // call twice this function the previous registered callback is absolutely
96 // ignored.
97 // --------------------------------------------------------------------------
98 void wxSoundStream::SetCallback(int evt, wxSoundCallback cbk, void *cdata)
99 {
100 int c;
101
102 switch (evt) {
103 case wxSOUND_INPUT:
104 c = 0;
105 break;
106 case wxSOUND_OUTPUT:
107 c = 1;
108 break;
109 default:
110 return;
111 }
112 m_callback[c] = cbk;
113 m_cdata[c] = cdata;
114 }
115
116 // --------------------------------------------------------------------------
117 // OnSoundEvent(int evt) is called either when the driver is ready to receive
118 // a new block to play or when the driver has a new recorded buffer. You
119 // must be careful here and try not to spend a lot of time: this is a
120 // real-time call. In the case, an "event handler" was specified previously,
121 // it called him before everything.
122 // --------------------------------------------------------------------------
123 void wxSoundStream::OnSoundEvent(int evt)
124 {
125 int c;
126
127 if (m_handler) {
128 m_handler->OnSoundEvent(evt);
129 return;
130 }
131
132 switch (evt) {
133 case wxSOUND_INPUT:
134 c = 0;
135 break;
136 case wxSOUND_OUTPUT:
137 c = 1;
138 break;
139 default:
140 return;
141 }
142 if (m_callback[c])
143 m_callback[c](this, evt, m_cdata[c]);
144 }