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Viewing changes to Externals/portaudio/src/hostapi/dsound/pa_win_ds_dynlink.c

  • Committer: Sérgio Benjamim
  • Date: 2015-02-13 05:54:40 UTC
  • Revision ID: sergio_br2@yahoo.com.br-20150213055440-ey2rt3sjpy27km78
Dolphin Triforce branch from code.google, commit b957980 (4.0-315).

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Externals/portaudio/src/hostapi/dsound/pa_win_ds_dynlink.c
 
1
/*
 
2
 * Interface for dynamically loading directsound and providing a dummy
 
3
 * implementation if it isn't present.
 
4
 *
 
5
 * Author: Ross Bencina (some portions Phil Burk & Robert Marsanyi)
 
6
 *
 
7
 * For PortAudio Portable Real-Time Audio Library
 
8
 * For more information see: http://www.portaudio.com
 
9
 * Copyright (c) 1999-2006 Phil Burk, Robert Marsanyi and Ross Bencina
 
10
 *
 
11
 * Permission is hereby granted, free of charge, to any person obtaining
 
12
 * a copy of this software and associated documentation files
 
13
 * (the "Software"), to deal in the Software without restriction,
 
14
 * including without limitation the rights to use, copy, modify, merge,
 
15
 * publish, distribute, sublicense, and/or sell copies of the Software,
 
16
 * and to permit persons to whom the Software is furnished to do so,
 
17
 * subject to the following conditions:
 
18
 *
 
19
 * The above copyright notice and this permission notice shall be
 
20
 * included in all copies or substantial portions of the Software.
 
21
 *
 
22
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
23
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
24
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 
25
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
 
26
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 
27
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
28
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
29
 */
 
30
 
 
31
/*
 
32
 * The text above constitutes the entire PortAudio license; however, 
 
33
 * the PortAudio community also makes the following non-binding requests:
 
34
 *
 
35
 * Any person wishing to distribute modifications to the Software is
 
36
 * requested to send the modifications to the original developer so that
 
37
 * they can be incorporated into the canonical version. It is also 
 
38
 * requested that these non-binding requests be included along with the 
 
39
 * license above.
 
40
 */
 
41
 
 
42
/**
 
43
 @file
 
44
 @ingroup hostapi_src
 
45
*/
 
46
 
 
47
#include "pa_win_ds_dynlink.h"
 
48
#include "pa_debugprint.h"
 
49
 
 
50
PaWinDsDSoundEntryPoints paWinDsDSoundEntryPoints = { 0, 0, 0, 0, 0, 0, 0 };
 
51
 
 
52
 
 
53
static HRESULT WINAPI DummyDllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 
54
{
 
55
    (void)rclsid; /* unused parameter */
 
56
    (void)riid; /* unused parameter */
 
57
    (void)ppv; /* unused parameter */
 
58
    return CLASS_E_CLASSNOTAVAILABLE;
 
59
}
 
60
 
 
61
static HRESULT WINAPI DummyDirectSoundCreate(LPGUID lpcGuidDevice, LPDIRECTSOUND *ppDS, LPUNKNOWN pUnkOuter)
 
62
{
 
63
    (void)lpcGuidDevice; /* unused parameter */
 
64
    (void)ppDS; /* unused parameter */
 
65
    (void)pUnkOuter; /* unused parameter */
 
66
    return E_NOTIMPL;
 
67
}
 
68
 
 
69
static HRESULT WINAPI DummyDirectSoundEnumerateW(LPDSENUMCALLBACKW lpDSEnumCallback, LPVOID lpContext)
 
70
{
 
71
    (void)lpDSEnumCallback; /* unused parameter */
 
72
    (void)lpContext; /* unused parameter */
 
73
    return E_NOTIMPL;
 
74
}
 
75
 
 
76
static HRESULT WINAPI DummyDirectSoundEnumerateA(LPDSENUMCALLBACKA lpDSEnumCallback, LPVOID lpContext)
 
77
{
 
78
    (void)lpDSEnumCallback; /* unused parameter */
 
79
    (void)lpContext; /* unused parameter */
 
80
    return E_NOTIMPL;
 
81
}
 
82
 
 
83
static HRESULT WINAPI DummyDirectSoundCaptureCreate(LPGUID lpcGUID, LPDIRECTSOUNDCAPTURE *lplpDSC, LPUNKNOWN pUnkOuter)
 
84
{
 
85
    (void)lpcGUID; /* unused parameter */
 
86
    (void)lplpDSC; /* unused parameter */
 
87
    (void)pUnkOuter; /* unused parameter */
 
88
    return E_NOTIMPL;
 
89
}
 
90
 
 
91
static HRESULT WINAPI DummyDirectSoundCaptureEnumerateW(LPDSENUMCALLBACKW lpDSCEnumCallback, LPVOID lpContext)
 
92
{
 
93
    (void)lpDSCEnumCallback; /* unused parameter */
 
94
    (void)lpContext; /* unused parameter */
 
95
    return E_NOTIMPL;
 
96
}
 
97
 
 
98
static HRESULT WINAPI DummyDirectSoundCaptureEnumerateA(LPDSENUMCALLBACKA lpDSCEnumCallback, LPVOID lpContext)
 
99
{
 
100
    (void)lpDSCEnumCallback; /* unused parameter */
 
101
    (void)lpContext; /* unused parameter */
 
102
    return E_NOTIMPL;
 
103
}
 
104
 
 
105
#ifdef PAWIN_USE_DIRECTSOUNDFULLDUPLEXCREATE
 
106
static HRESULT WINAPI DummyDirectSoundFullDuplexCreate8(
 
107
         LPCGUID pcGuidCaptureDevice,
 
108
         LPCGUID pcGuidRenderDevice,
 
109
         LPCDSCBUFFERDESC pcDSCBufferDesc,
 
110
         LPCDSBUFFERDESC pcDSBufferDesc,
 
111
         HWND hWnd,
 
112
         DWORD dwLevel,
 
113
         LPDIRECTSOUNDFULLDUPLEX * ppDSFD,
 
114
         LPDIRECTSOUNDCAPTUREBUFFER8 * ppDSCBuffer8,
 
115
         LPDIRECTSOUNDBUFFER8 * ppDSBuffer8,
 
116
         LPUNKNOWN pUnkOuter)
 
117
{
 
118
    (void)pcGuidCaptureDevice; /* unused parameter */
 
119
    (void)pcGuidRenderDevice; /* unused parameter */
 
120
    (void)pcDSCBufferDesc; /* unused parameter */
 
121
    (void)pcDSBufferDesc; /* unused parameter */
 
122
    (void)hWnd; /* unused parameter */
 
123
    (void)dwLevel; /* unused parameter */
 
124
    (void)ppDSFD; /* unused parameter */
 
125
    (void)ppDSCBuffer8; /* unused parameter */
 
126
    (void)ppDSBuffer8; /* unused parameter */
 
127
    (void)pUnkOuter; /* unused parameter */
 
128
 
 
129
    return E_NOTIMPL;
 
130
}
 
131
#endif /* PAWIN_USE_DIRECTSOUNDFULLDUPLEXCREATE */
 
132
 
 
133
void PaWinDs_InitializeDSoundEntryPoints(void)
 
134
{
 
135
    paWinDsDSoundEntryPoints.hInstance_ = LoadLibraryA("dsound.dll");
 
136
    if( paWinDsDSoundEntryPoints.hInstance_ != NULL )
 
137
    {
 
138
        paWinDsDSoundEntryPoints.DllGetClassObject =
 
139
                (HRESULT (WINAPI *)(REFCLSID, REFIID , LPVOID *))
 
140
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DllGetClassObject" );
 
141
        if( paWinDsDSoundEntryPoints.DllGetClassObject == NULL )
 
142
            paWinDsDSoundEntryPoints.DllGetClassObject = DummyDllGetClassObject;
 
143
 
 
144
        paWinDsDSoundEntryPoints.DirectSoundCreate =
 
145
                (HRESULT (WINAPI *)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN))
 
146
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundCreate" );
 
147
        if( paWinDsDSoundEntryPoints.DirectSoundCreate == NULL )
 
148
            paWinDsDSoundEntryPoints.DirectSoundCreate = DummyDirectSoundCreate;
 
149
 
 
150
        paWinDsDSoundEntryPoints.DirectSoundEnumerateW =
 
151
                (HRESULT (WINAPI *)(LPDSENUMCALLBACKW, LPVOID))
 
152
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundEnumerateW" );
 
153
        if( paWinDsDSoundEntryPoints.DirectSoundEnumerateW == NULL )
 
154
            paWinDsDSoundEntryPoints.DirectSoundEnumerateW = DummyDirectSoundEnumerateW;
 
155
 
 
156
        paWinDsDSoundEntryPoints.DirectSoundEnumerateA =
 
157
                (HRESULT (WINAPI *)(LPDSENUMCALLBACKA, LPVOID))
 
158
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundEnumerateA" );
 
159
        if( paWinDsDSoundEntryPoints.DirectSoundEnumerateA == NULL )
 
160
            paWinDsDSoundEntryPoints.DirectSoundEnumerateA = DummyDirectSoundEnumerateA;
 
161
 
 
162
        paWinDsDSoundEntryPoints.DirectSoundCaptureCreate =
 
163
                (HRESULT (WINAPI *)(LPGUID, LPDIRECTSOUNDCAPTURE *, LPUNKNOWN))
 
164
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundCaptureCreate" );
 
165
        if( paWinDsDSoundEntryPoints.DirectSoundCaptureCreate == NULL )
 
166
            paWinDsDSoundEntryPoints.DirectSoundCaptureCreate = DummyDirectSoundCaptureCreate;
 
167
 
 
168
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateW =
 
169
                (HRESULT (WINAPI *)(LPDSENUMCALLBACKW, LPVOID))
 
170
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundCaptureEnumerateW" );
 
171
        if( paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateW == NULL )
 
172
            paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateW = DummyDirectSoundCaptureEnumerateW;
 
173
 
 
174
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateA =
 
175
                (HRESULT (WINAPI *)(LPDSENUMCALLBACKA, LPVOID))
 
176
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundCaptureEnumerateA" );
 
177
        if( paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateA == NULL )
 
178
            paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateA = DummyDirectSoundCaptureEnumerateA;
 
179
 
 
180
#ifdef PAWIN_USE_DIRECTSOUNDFULLDUPLEXCREATE
 
181
        paWinDsDSoundEntryPoints.DirectSoundFullDuplexCreate8 =
 
182
                (HRESULT (WINAPI *)(LPCGUID, LPCGUID, LPCDSCBUFFERDESC, LPCDSBUFFERDESC,
 
183
                                    HWND, DWORD, LPDIRECTSOUNDFULLDUPLEX *, LPDIRECTSOUNDCAPTUREBUFFER8 *, 
 
184
                                    LPDIRECTSOUNDBUFFER8 *, LPUNKNOWN))
 
185
                GetProcAddress( paWinDsDSoundEntryPoints.hInstance_, "DirectSoundFullDuplexCreate" );
 
186
        if( paWinDsDSoundEntryPoints.DirectSoundFullDuplexCreate8 == NULL )
 
187
            paWinDsDSoundEntryPoints.DirectSoundFullDuplexCreate8 = DummyDirectSoundFullDuplexCreate8;
 
188
#endif
 
189
    }
 
190
    else
 
191
    {
 
192
        DWORD errorCode = GetLastError(); // 126 (0x7E) == ERROR_MOD_NOT_FOUND
 
193
        PA_DEBUG(("Couldn't load dsound.dll error code: %d \n",errorCode));
 
194
 
 
195
        /* initialize with dummy entry points to make live easy when ds isn't present */
 
196
        paWinDsDSoundEntryPoints.DirectSoundCreate = DummyDirectSoundCreate;
 
197
        paWinDsDSoundEntryPoints.DirectSoundEnumerateW = DummyDirectSoundEnumerateW;
 
198
        paWinDsDSoundEntryPoints.DirectSoundEnumerateA = DummyDirectSoundEnumerateA;
 
199
        paWinDsDSoundEntryPoints.DirectSoundCaptureCreate = DummyDirectSoundCaptureCreate;
 
200
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateW = DummyDirectSoundCaptureEnumerateW;
 
201
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateA = DummyDirectSoundCaptureEnumerateA;
 
202
#ifdef PAWIN_USE_DIRECTSOUNDFULLDUPLEXCREATE
 
203
        paWinDsDSoundEntryPoints.DirectSoundFullDuplexCreate8 = DummyDirectSoundFullDuplexCreate8;
 
204
#endif
 
205
    }
 
206
}
 
207
 
 
208
 
 
209
void PaWinDs_TerminateDSoundEntryPoints(void)
 
210
{
 
211
    if( paWinDsDSoundEntryPoints.hInstance_ != NULL )
 
212
    {
 
213
        /* ensure that we crash reliably if the entry points arent initialised */
 
214
        paWinDsDSoundEntryPoints.DirectSoundCreate = 0;
 
215
        paWinDsDSoundEntryPoints.DirectSoundEnumerateW = 0;
 
216
        paWinDsDSoundEntryPoints.DirectSoundEnumerateA = 0;
 
217
        paWinDsDSoundEntryPoints.DirectSoundCaptureCreate = 0;
 
218
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateW = 0;
 
219
        paWinDsDSoundEntryPoints.DirectSoundCaptureEnumerateA = 0;
 
220
 
 
221
        FreeLibrary( paWinDsDSoundEntryPoints.hInstance_ );
 
222
        paWinDsDSoundEntryPoints.hInstance_ = NULL;
 
223
    }
 
224
}
 
 
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