SDL  2.0
SDL_xaudio2_winrthelpers.cpp
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22 
23 #include <xaudio2.h>
25 
26 #if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP
27 using Windows::Devices::Enumeration::DeviceClass;
28 using Windows::Devices::Enumeration::DeviceInformation;
29 using Windows::Devices::Enumeration::DeviceInformationCollection;
30 #endif
31 
32 extern "C" HRESULT __cdecl IXAudio2_GetDeviceCount(IXAudio2 * ixa2, UINT32 * devcount)
33 {
34 #if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
35  // There doesn't seem to be any audio device enumeration on Windows Phone.
36  // In lieu of this, just treat things as if there is one and only one
37  // audio device.
38  *devcount = 1;
39  return S_OK;
40 #else
41  // TODO, WinRT: make xaudio2 device enumeration only happen once, and in the background
42  auto operation = DeviceInformation::FindAllAsync(DeviceClass::AudioRender);
43  while (operation->Status != Windows::Foundation::AsyncStatus::Completed)
44  {
45  }
46 
47  DeviceInformationCollection^ devices = operation->GetResults();
48  *devcount = devices->Size;
49  return S_OK;
50 #endif
51 }
52 
53 extern "C" HRESULT IXAudio2_GetDeviceDetails(IXAudio2 * unused, UINT32 index, XAUDIO2_DEVICE_DETAILS * details)
54 {
55 #if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
56  // Windows Phone doesn't seem to have the same device enumeration APIs that
57  // Windows 8/RT has, or it doesn't have them at all. In lieu of this,
58  // just treat things as if there is one, and only one, default device.
59  if (index != 0)
60  {
61  return XAUDIO2_E_INVALID_CALL;
62  }
63 
64  if (details)
65  {
66  wcsncpy_s(details->DeviceID, ARRAYSIZE(details->DeviceID), L"default", _TRUNCATE);
67  wcsncpy_s(details->DisplayName, ARRAYSIZE(details->DisplayName), L"default", _TRUNCATE);
68  }
69  return S_OK;
70 #else
71  auto operation = DeviceInformation::FindAllAsync(DeviceClass::AudioRender);
72  while (operation->Status != Windows::Foundation::AsyncStatus::Completed)
73  {
74  }
75 
76  DeviceInformationCollection^ devices = operation->GetResults();
77  if (index >= devices->Size)
78  {
79  return XAUDIO2_E_INVALID_CALL;
80  }
81 
82  DeviceInformation^ d = devices->GetAt(index);
83  if (details)
84  {
85  wcsncpy_s(details->DeviceID, ARRAYSIZE(details->DeviceID), d->Id->Data(), _TRUNCATE);
86  wcsncpy_s(details->DisplayName, ARRAYSIZE(details->DisplayName), d->Name->Data(), _TRUNCATE);
87  }
88  return S_OK;
89 #endif
90 }
HRESULT __cdecl IXAudio2_GetDeviceCount(IXAudio2 *ixa2, UINT32 *devcount)
interface IXAudio2 IXAudio2
Definition: SDL_xaudio2.h:35
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 SDL_AssertionHandler void SDL_SpinLock SDL_atomic_t int int return SDL_atomic_t return void void void return void return int return SDL_AudioSpec SDL_AudioSpec return int int return return int SDL_RWops int SDL_AudioSpec Uint8 ** d
#define S_OK
Definition: SDL_directx.h:47
GLuint index
HRESULT IXAudio2_GetDeviceDetails(IXAudio2 *unused, UINT32 index, XAUDIO2_DEVICE_DETAILS *details)