source: trunk/src/dsound/DAudioNotify.cpp@ 10431

Last change on this file since 10431 was 5608, checked in by sandervl, 25 years ago

preliminary code for directaudio interface
File size: 6.1 KB
Line 
1/* $Id: DAudioNotify.cpp,v 1.1 2001-04-27 17:39:48 sandervl Exp $ */
2/*
3 * DirectSound DirectSoundNotify class (DirectAudio)
4 *
5 * Copyright 2000 Michal Necasek
6 *
7 * Project Odin Software License can be found in LICENSE.TXT
8 *
9 */
10
11
12/*@Header***********************************************************************
13* Header Files *
14*******************************************************************************/
15#define INCL_DOSMISC
16#include <os2win.h>
17
18#include <stdlib.h>
19#include <string.h>
20
21#define INITGUID
22#include <dsound.h>
23
24#include "os2dsound.h"
25#include "daudiobuffer.h"
26#include "daudionotify.h"
27#include <misc.h>
28
29//******************************************************************************
30//******************************************************************************
31IDirectAudioNotify::IDirectAudioNotify(IDirectAudioBuffer *parentBuffer)
32{
33 lpVtbl = &Vtbl;
34 Vtbl.AddRef = DAudioNotifyAddRef;
35 Vtbl.Release = DAudioNotifyRelease;
36 Vtbl.QueryInterface = DAudioNotifyQueryInterface;
37 Vtbl.SetNotificationPositions = DAudioNotifySetNotificationPositions;
38
39 dprintf(("DSOUND-IDirectAudioNotify::IDirectAudioNotify (this=%X)", this));
40
41 lpSoundBuffer = parentBuffer;
42 lpPositions = NULL;
43 cPositions = 0;
44 Referenced = 0;
45
46 // add a reference to the parent SoundBuffer to make sure it won't suddenly disappear
47 lpSoundBuffer->Vtbl.AddRef(lpSoundBuffer);
48 // set pointer to ourselves in parent SoundBuffer
49 lpSoundBuffer->SetNotify(this);
50}
51
52//******************************************************************************
53//******************************************************************************
54IDirectAudioNotify::~IDirectAudioNotify()
55{
56 dprintf(("DSOUND-IDirectAudioNotify::~IDirectAudioNotify (this=%X)", this));
57 lpSoundBuffer->SetNotify(NULL);
58 lpSoundBuffer->Vtbl.Release(lpSoundBuffer);
59 if (lpPositions != NULL)
60 free(lpPositions);
61}
62
63//******************************************************************************
64//******************************************************************************
65HRESULT __stdcall DAudioNotifyQueryInterface(THIS, REFIID riid, LPVOID * ppvObj)
66{
67 dprintf(("DSOUND-IDirectAudioNotify::QueryInterface"));
68 if (This == NULL) {
69 return DSERR_INVALIDPARAM;
70 }
71 *ppvObj = NULL;
72
73 if (!IsEqualGUID(riid, IID_IDirectSoundNotify))
74 return E_NOINTERFACE;
75
76 *ppvObj = This;
77
78 DAudioNotifyAddRef(This);
79 return DS_OK;
80}
81
82//******************************************************************************
83//******************************************************************************
84ULONG __stdcall DAudioNotifyAddRef(THIS)
85{
86 IDirectAudioNotify *me = (IDirectAudioNotify *)This;
87
88 dprintf(("DSOUND-IDirectAudioNotify::AddRef (this=%X) %d", me, me->Referenced+1));
89 if (me == NULL) {
90 return 0;
91 }
92 return ++me->Referenced;
93}
94
95//******************************************************************************
96//******************************************************************************
97ULONG __stdcall DAudioNotifyRelease(THIS)
98{
99 IDirectAudioNotify *me = (IDirectAudioNotify *)This;
100
101 dprintf(("DSOUND-IDirectAudioNotify::Release (this=%X) %d", me, me->Referenced-1));
102 if (me == NULL) {
103 return 0;
104 }
105 if (me->Referenced) {
106 me->Referenced--;
107 if (me->Referenced == 0) {
108 delete me;
109 return DS_OK;
110 }
111 else
112 return me->Referenced;
113 }
114 else
115 return DS_OK;
116}
117
118//******************************************************************************
119//******************************************************************************
120HRESULT __stdcall DAudioNotifySetNotificationPositions(THIS, DWORD cPositionNotifies,
121 LPCDSBPOSITIONNOTIFY lpcPositionNotifies)
122{
123 IDirectAudioNotify *me = (IDirectAudioNotify *)This;
124
125 dprintf(("DSOUND-IDirectAudioNotify::DAudioNotifySetPositions (%d, this=%X)", cPositionNotifies, me));
126 if (me == NULL || lpcPositionNotifies == NULL) {
127 return DSERR_INVALIDPARAM;
128 }
129
130 // we have to copy the notifications array to our own memory here; if any notifications
131 // were registered previously, discard them
132 me->cPositions = cPositionNotifies;
133 if (me->lpPositions != NULL)
134 free(me->lpPositions);
135 me->lpPositions = (LPDSBPOSITIONNOTIFY)malloc(cPositionNotifies * sizeof(DSBPOSITIONNOTIFY));
136 for (int i = 0; i < cPositionNotifies; i++) {
137 me->lpPositions[i].dwOffset = lpcPositionNotifies[i].dwOffset;
138 me->lpPositions[i].hEventNotify = lpcPositionNotifies[i].hEventNotify;
139 }
140
141 return DS_OK;
142}
143
144//******************************************************************************
145//******************************************************************************
146void IDirectAudioNotify::CheckPos(DWORD dwOldpos, DWORD dwNewpos)
147{
148 //dprintf(("DSOUND-IDirectAudioNotify::CheckPos (%d, %d) (this=%X)", dwOldpos, dwNewpos, this));
149 // loop thru all registered notifications and check if any offset was reached
150 DWORD i;
151
152 for (i = 0; i < cPositions; i++) {
153 // we do NOT handle the stop notification here
154 if (lpPositions[i].dwOffset == DSBPN_OFFSETSTOP)
155 continue;
156
157 if (dwOldpos < dwNewpos) { // did we just wrap?
158 if ((lpPositions[i].dwOffset >= dwOldpos) && (lpPositions[i].dwOffset < dwNewpos))
159 SetEvent(lpPositions[i].hEventNotify);
160 } else { // yes we wrapped
161 if ((lpPositions[i].dwOffset >= dwOldpos) || (lpPositions[i].dwOffset < dwNewpos))
162 SetEvent(lpPositions[i].hEventNotify);
163 }
164 }
165}
166
167//******************************************************************************
168//******************************************************************************
169void IDirectAudioNotify::CheckStop()
170{
171 //dprintf(("DSOUND-IDirectAudioNotify::CheckStop (this=%X)", this));
172 // just loop thru all notifications and check if DSBPN_OFFSETSTOP is there
173 DWORD i;
174
175 for (i = 0; i < cPositions; i++) {
176 if (lpPositions[i].dwOffset == DSBPN_OFFSETSTOP)
177 SetEvent(lpPositions[i].hEventNotify);
178 }
179}
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